1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.am; 18 19 import static android.app.ActivityManager.StackId.ASSISTANT_STACK_ID; 20 import static android.app.ActivityManager.StackId.DOCKED_STACK_ID; 21 import static android.app.ActivityManager.StackId.FREEFORM_WORKSPACE_STACK_ID; 22 import static android.app.ActivityManager.StackId.FULLSCREEN_WORKSPACE_STACK_ID; 23 import static android.app.ActivityManager.StackId.HOME_STACK_ID; 24 import static android.app.ActivityManager.StackId.INVALID_STACK_ID; 25 import static android.app.ActivityManager.StackId.PINNED_STACK_ID; 26 import static android.app.ActivityManager.StackId.RECENTS_STACK_ID; 27 import static android.content.pm.ActivityInfo.CONFIG_SCREEN_LAYOUT; 28 import static android.content.pm.ActivityInfo.FLAG_RESUME_WHILE_PAUSING; 29 import static android.content.pm.ActivityInfo.FLAG_SHOW_FOR_ALL_USERS; 30 import static android.view.Display.DEFAULT_DISPLAY; 31 import static android.view.Display.FLAG_CAN_SHOW_WITH_INSECURE_KEYGUARD; 32 33 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_ADD_REMOVE; 34 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_ALL; 35 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_APP; 36 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_CLEANUP; 37 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_CONTAINERS; 38 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_PAUSE; 39 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_RELEASE; 40 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_RESULTS; 41 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_SAVED_STATE; 42 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_STACK; 43 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_STATES; 44 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_SWITCH; 45 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_TASKS; 46 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_TRANSITION; 47 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_USER_LEAVING; 48 import static com.android.server.am.ActivityManagerDebugConfig.DEBUG_VISIBILITY; 49 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_ADD_REMOVE; 50 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_APP; 51 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_CLEANUP; 52 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_CONTAINERS; 53 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_PAUSE; 54 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_RELEASE; 55 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_RESULTS; 56 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_SAVED_STATE; 57 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_STACK; 58 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_STATES; 59 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_SWITCH; 60 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_TASKS; 61 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_TRANSITION; 62 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_USER_LEAVING; 63 import static com.android.server.am.ActivityManagerDebugConfig.POSTFIX_VISIBILITY; 64 import static com.android.server.am.ActivityManagerDebugConfig.TAG_AM; 65 import static com.android.server.am.ActivityManagerDebugConfig.TAG_WITH_CLASS_NAME; 66 import static com.android.server.am.ActivityRecord.APPLICATION_ACTIVITY_TYPE; 67 import static com.android.server.am.ActivityRecord.ASSISTANT_ACTIVITY_TYPE; 68 import static com.android.server.am.ActivityRecord.HOME_ACTIVITY_TYPE; 69 import static com.android.server.am.ActivityStack.ActivityState.STOPPED; 70 import static com.android.server.am.ActivityStack.ActivityState.STOPPING; 71 import static com.android.server.am.ActivityStackSupervisor.FindTaskResult; 72 import static com.android.server.am.ActivityStackSupervisor.ON_TOP; 73 import static com.android.server.am.ActivityStackSupervisor.PAUSE_IMMEDIATELY; 74 import static com.android.server.am.ActivityStackSupervisor.PRESERVE_WINDOWS; 75 import static com.android.server.am.ActivityStackSupervisor.REMOVE_FROM_RECENTS; 76 import static com.android.server.wm.AppTransition.TRANSIT_ACTIVITY_CLOSE; 77 import static com.android.server.wm.AppTransition.TRANSIT_ACTIVITY_OPEN; 78 import static com.android.server.wm.AppTransition.TRANSIT_NONE; 79 import static com.android.server.wm.AppTransition.TRANSIT_TASK_CLOSE; 80 import static com.android.server.wm.AppTransition.TRANSIT_TASK_OPEN; 81 import static com.android.server.wm.AppTransition.TRANSIT_TASK_OPEN_BEHIND; 82 import static com.android.server.wm.AppTransition.TRANSIT_TASK_TO_BACK; 83 import static com.android.server.wm.AppTransition.TRANSIT_TASK_TO_FRONT; 84 import static java.lang.Integer.MAX_VALUE; 85 86 import android.app.Activity; 87 import android.app.ActivityManager; 88 import android.app.ActivityManager.RunningTaskInfo; 89 import android.app.ActivityManager.StackId; 90 import android.app.ActivityOptions; 91 import android.app.AppGlobals; 92 import android.app.IActivityController; 93 import android.app.ResultInfo; 94 import android.content.ComponentName; 95 import android.content.Intent; 96 import android.content.pm.ActivityInfo; 97 import android.content.pm.ApplicationInfo; 98 import android.content.res.Configuration; 99 import android.graphics.Point; 100 import android.graphics.Rect; 101 import android.net.Uri; 102 import android.os.Binder; 103 import android.os.Bundle; 104 import android.os.Debug; 105 import android.os.Handler; 106 import android.os.IBinder; 107 import android.os.Looper; 108 import android.os.Message; 109 import android.os.RemoteException; 110 import android.os.SystemClock; 111 import android.os.Trace; 112 import android.os.UserHandle; 113 import android.service.voice.IVoiceInteractionSession; 114 import android.util.ArraySet; 115 import android.util.EventLog; 116 import android.util.IntArray; 117 import android.util.Log; 118 import android.util.Slog; 119 import android.util.SparseArray; 120 import android.view.Display; 121 122 import com.android.internal.annotations.VisibleForTesting; 123 import com.android.internal.app.IVoiceInteractor; 124 import com.android.internal.os.BatteryStatsImpl; 125 import com.android.server.Watchdog; 126 import com.android.server.am.ActivityManagerService.ItemMatcher; 127 import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 128 import com.android.server.wm.StackWindowController; 129 import com.android.server.wm.StackWindowListener; 130 import com.android.server.wm.WindowManagerService; 131 132 import java.io.FileDescriptor; 133 import java.io.PrintWriter; 134 import java.lang.ref.WeakReference; 135 import java.util.ArrayList; 136 import java.util.Iterator; 137 import java.util.List; 138 import java.util.Objects; 139 import java.util.Set; 140 141 /** 142 * State and management of a single stack of activities. 143 */ 144 class ActivityStack<T extends StackWindowController> extends ConfigurationContainer 145 implements StackWindowListener { 146 147 private static final String TAG = TAG_WITH_CLASS_NAME ? "ActivityStack" : TAG_AM; 148 private static final String TAG_ADD_REMOVE = TAG + POSTFIX_ADD_REMOVE; 149 private static final String TAG_APP = TAG + POSTFIX_APP; 150 private static final String TAG_CLEANUP = TAG + POSTFIX_CLEANUP; 151 private static final String TAG_CONTAINERS = TAG + POSTFIX_CONTAINERS; 152 private static final String TAG_PAUSE = TAG + POSTFIX_PAUSE; 153 private static final String TAG_RELEASE = TAG + POSTFIX_RELEASE; 154 private static final String TAG_RESULTS = TAG + POSTFIX_RESULTS; 155 private static final String TAG_SAVED_STATE = TAG + POSTFIX_SAVED_STATE; 156 private static final String TAG_STACK = TAG + POSTFIX_STACK; 157 private static final String TAG_STATES = TAG + POSTFIX_STATES; 158 private static final String TAG_SWITCH = TAG + POSTFIX_SWITCH; 159 private static final String TAG_TASKS = TAG + POSTFIX_TASKS; 160 private static final String TAG_TRANSITION = TAG + POSTFIX_TRANSITION; 161 private static final String TAG_USER_LEAVING = TAG + POSTFIX_USER_LEAVING; 162 private static final String TAG_VISIBILITY = TAG + POSTFIX_VISIBILITY; 163 164 // Ticks during which we check progress while waiting for an app to launch. 165 static final int LAUNCH_TICK = 500; 166 167 // How long we wait until giving up on the last activity to pause. This 168 // is short because it directly impacts the responsiveness of starting the 169 // next activity. 170 private static final int PAUSE_TIMEOUT = 500; 171 172 // How long we wait for the activity to tell us it has stopped before 173 // giving up. This is a good amount of time because we really need this 174 // from the application in order to get its saved state. 175 private static final int STOP_TIMEOUT = 10 * 1000; 176 177 // How long we wait until giving up on an activity telling us it has 178 // finished destroying itself. 179 private static final int DESTROY_TIMEOUT = 10 * 1000; 180 181 // How long until we reset a task when the user returns to it. Currently 182 // disabled. 183 private static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 184 185 // Set to false to disable the preview that is shown while a new activity 186 // is being started. 187 private static final boolean SHOW_APP_STARTING_PREVIEW = true; 188 189 // How long to wait for all background Activities to redraw following a call to 190 // convertToTranslucent(). 191 private static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 192 193 // How many activities have to be scheduled to stop to force a stop pass. 194 private static final int MAX_STOPPING_TO_FORCE = 3; 195 196 @Override 197 protected int getChildCount() { 198 return mTaskHistory.size(); 199 } 200 201 @Override 202 protected ConfigurationContainer getChildAt(int index) { 203 return mTaskHistory.get(index); 204 } 205 206 @Override 207 protected ConfigurationContainer getParent() { 208 return mActivityContainer.mActivityDisplay; 209 } 210 211 @Override 212 void onParentChanged() { 213 super.onParentChanged(); 214 mStackSupervisor.updateUIDsPresentOnDisplay(); 215 } 216 217 enum ActivityState { 218 INITIALIZING, 219 RESUMED, 220 PAUSING, 221 PAUSED, 222 STOPPING, 223 STOPPED, 224 FINISHING, 225 DESTROYING, 226 DESTROYED 227 } 228 229 // Stack is not considered visible. 230 static final int STACK_INVISIBLE = 0; 231 // Stack is considered visible 232 static final int STACK_VISIBLE = 1; 233 // Stack is considered visible, but only becuase it has activity that is visible behind other 234 // activities and there is a specific combination of stacks. 235 static final int STACK_VISIBLE_ACTIVITY_BEHIND = 2; 236 237 @VisibleForTesting 238 /* The various modes for the method {@link #removeTask}. */ 239 // Task is being completely removed from all stacks in the system. 240 protected static final int REMOVE_TASK_MODE_DESTROYING = 0; 241 // Task is being removed from this stack so we can add it to another stack. In the case we are 242 // moving we don't want to perform some operations on the task like removing it from window 243 // manager or recents. 244 static final int REMOVE_TASK_MODE_MOVING = 1; 245 // Similar to {@link #REMOVE_TASK_MODE_MOVING} and the task will be added to the top of its new 246 // stack and the new stack will be on top of all stacks. 247 static final int REMOVE_TASK_MODE_MOVING_TO_TOP = 2; 248 249 // The height/width divide used when fitting a task within a bounds with method 250 // {@link #fitWithinBounds}. 251 // We always want the task to to be visible in the bounds without affecting its size when 252 // fitting. To make sure this is the case, we don't adjust the task left or top side pass 253 // the input bounds right or bottom side minus the width or height divided by this value. 254 private static final int FIT_WITHIN_BOUNDS_DIVIDER = 3; 255 256 final ActivityManagerService mService; 257 private final WindowManagerService mWindowManager; 258 T mWindowContainerController; 259 private final RecentTasks mRecentTasks; 260 261 /** 262 * The back history of all previous (and possibly still 263 * running) activities. It contains #TaskRecord objects. 264 */ 265 private final ArrayList<TaskRecord> mTaskHistory = new ArrayList<>(); 266 267 /** 268 * List of running activities, sorted by recent usage. 269 * The first entry in the list is the least recently used. 270 * It contains HistoryRecord objects. 271 */ 272 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<>(); 273 274 /** 275 * Animations that for the current transition have requested not to 276 * be considered for the transition animation. 277 */ 278 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<>(); 279 280 /** 281 * When we are in the process of pausing an activity, before starting the 282 * next one, this variable holds the activity that is currently being paused. 283 */ 284 ActivityRecord mPausingActivity = null; 285 286 /** 287 * This is the last activity that we put into the paused state. This is 288 * used to determine if we need to do an activity transition while sleeping, 289 * when we normally hold the top activity paused. 290 */ 291 ActivityRecord mLastPausedActivity = null; 292 293 /** 294 * Activities that specify No History must be removed once the user navigates away from them. 295 * If the device goes to sleep with such an activity in the paused state then we save it here 296 * and finish it later if another activity replaces it on wakeup. 297 */ 298 ActivityRecord mLastNoHistoryActivity = null; 299 300 /** 301 * Current activity that is resumed, or null if there is none. 302 */ 303 ActivityRecord mResumedActivity = null; 304 305 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 306 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 307 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 308 // Activity in mTranslucentActivityWaiting is notified via 309 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 310 // background activity being drawn then the same call will be made with a true value. 311 ActivityRecord mTranslucentActivityWaiting = null; 312 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = new ArrayList<>(); 313 314 /** 315 * Set when we know we are going to be calling updateConfiguration() 316 * soon, so want to skip intermediate config checks. 317 */ 318 boolean mConfigWillChange; 319 320 /** 321 * When set, will force the stack to report as invisible. 322 */ 323 boolean mForceHidden = false; 324 325 // Whether or not this stack covers the entire screen; by default stacks are fullscreen 326 boolean mFullscreen = true; 327 // Current bounds of the stack or null if fullscreen. 328 Rect mBounds = null; 329 330 private boolean mUpdateBoundsDeferred; 331 private boolean mUpdateBoundsDeferredCalled; 332 private final Rect mDeferredBounds = new Rect(); 333 private final Rect mDeferredTaskBounds = new Rect(); 334 private final Rect mDeferredTaskInsetBounds = new Rect(); 335 336 long mLaunchStartTime = 0; 337 long mFullyDrawnStartTime = 0; 338 339 int mCurrentUser; 340 341 final int mStackId; 342 final ActivityContainer mActivityContainer; 343 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 344 ArrayList<ActivityStack> mStacks; 345 /** The attached Display's unique identifier, or -1 if detached */ 346 int mDisplayId; 347 348 /** Temp variables used during override configuration update. */ 349 private final SparseArray<Configuration> mTmpConfigs = new SparseArray<>(); 350 private final SparseArray<Rect> mTmpBounds = new SparseArray<>(); 351 private final SparseArray<Rect> mTmpInsetBounds = new SparseArray<>(); 352 private final Rect mTmpRect2 = new Rect(); 353 354 /** Run all ActivityStacks through this */ 355 protected final ActivityStackSupervisor mStackSupervisor; 356 357 private final LaunchingTaskPositioner mTaskPositioner; 358 359 private boolean mTopActivityOccludesKeyguard; 360 private ActivityRecord mTopDismissingKeyguardActivity; 361 362 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 363 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 364 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 365 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 366 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 367 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 368 static final int RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG = 369 ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 7; 370 371 private static class ScheduleDestroyArgs { 372 final ProcessRecord mOwner; 373 final String mReason; 374 ScheduleDestroyArgs(ProcessRecord owner, String reason) { 375 mOwner = owner; 376 mReason = reason; 377 } 378 } 379 380 final Handler mHandler; 381 382 private class ActivityStackHandler extends Handler { 383 384 ActivityStackHandler(Looper looper) { 385 super(looper); 386 } 387 388 @Override 389 public void handleMessage(Message msg) { 390 switch (msg.what) { 391 case PAUSE_TIMEOUT_MSG: { 392 ActivityRecord r = (ActivityRecord)msg.obj; 393 // We don't at this point know if the activity is fullscreen, 394 // so we need to be conservative and assume it isn't. 395 Slog.w(TAG, "Activity pause timeout for " + r); 396 synchronized (mService) { 397 if (r.app != null) { 398 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 399 } 400 activityPausedLocked(r.appToken, true); 401 } 402 } break; 403 case LAUNCH_TICK_MSG: { 404 ActivityRecord r = (ActivityRecord)msg.obj; 405 synchronized (mService) { 406 if (r.continueLaunchTickingLocked()) { 407 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 408 } 409 } 410 } break; 411 case DESTROY_TIMEOUT_MSG: { 412 ActivityRecord r = (ActivityRecord)msg.obj; 413 // We don't at this point know if the activity is fullscreen, 414 // so we need to be conservative and assume it isn't. 415 Slog.w(TAG, "Activity destroy timeout for " + r); 416 synchronized (mService) { 417 activityDestroyedLocked(r != null ? r.appToken : null, "destroyTimeout"); 418 } 419 } break; 420 case STOP_TIMEOUT_MSG: { 421 ActivityRecord r = (ActivityRecord)msg.obj; 422 // We don't at this point know if the activity is fullscreen, 423 // so we need to be conservative and assume it isn't. 424 Slog.w(TAG, "Activity stop timeout for " + r); 425 synchronized (mService) { 426 if (r.isInHistory()) { 427 r.activityStoppedLocked(null /* icicle */, 428 null /* persistentState */, null /* description */); 429 } 430 } 431 } break; 432 case DESTROY_ACTIVITIES_MSG: { 433 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 434 synchronized (mService) { 435 destroyActivitiesLocked(args.mOwner, args.mReason); 436 } 437 } break; 438 case TRANSLUCENT_TIMEOUT_MSG: { 439 synchronized (mService) { 440 notifyActivityDrawnLocked(null); 441 } 442 } break; 443 case RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG: { 444 synchronized (mService) { 445 final ActivityRecord r = getVisibleBehindActivity(); 446 Slog.e(TAG, "Timeout waiting for cancelVisibleBehind player=" + r); 447 if (r != null) { 448 mService.killAppAtUsersRequest(r.app, null); 449 } 450 } 451 } break; 452 } 453 } 454 } 455 456 int numActivities() { 457 int count = 0; 458 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 459 count += mTaskHistory.get(taskNdx).mActivities.size(); 460 } 461 return count; 462 } 463 464 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer, 465 RecentTasks recentTasks, boolean onTop) { 466 mActivityContainer = activityContainer; 467 mStackSupervisor = activityContainer.getOuter(); 468 mService = mStackSupervisor.mService; 469 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 470 mWindowManager = mService.mWindowManager; 471 mStackId = activityContainer.mStackId; 472 mCurrentUser = mService.mUserController.getCurrentUserIdLocked(); 473 mRecentTasks = recentTasks; 474 mTaskPositioner = mStackId == FREEFORM_WORKSPACE_STACK_ID 475 ? new LaunchingTaskPositioner() : null; 476 final ActivityStackSupervisor.ActivityDisplay display = mActivityContainer.mActivityDisplay; 477 mTmpRect2.setEmpty(); 478 mWindowContainerController = createStackWindowController(display.mDisplayId, onTop, 479 mTmpRect2); 480 activityContainer.mStack = this; 481 mStackSupervisor.mActivityContainers.put(mStackId, activityContainer); 482 postAddToDisplay(display, mTmpRect2.isEmpty() ? null : mTmpRect2, onTop); 483 } 484 485 T createStackWindowController(int displayId, boolean onTop, Rect outBounds) { 486 return (T) new StackWindowController(mStackId, this, displayId, onTop, outBounds); 487 } 488 489 T getWindowContainerController() { 490 return mWindowContainerController; 491 } 492 493 /** Adds the stack to specified display and calls WindowManager to do the same. */ 494 void reparent(ActivityStackSupervisor.ActivityDisplay activityDisplay, boolean onTop) { 495 removeFromDisplay(); 496 mTmpRect2.setEmpty(); 497 postAddToDisplay(activityDisplay, mTmpRect2.isEmpty() ? null : mTmpRect2, onTop); 498 adjustFocusToNextFocusableStackLocked("reparent", true /* allowFocusSelf */); 499 mStackSupervisor.resumeFocusedStackTopActivityLocked(); 500 // Update visibility of activities before notifying WM. This way it won't try to resize 501 // windows that are no longer visible. 502 mStackSupervisor.ensureActivitiesVisibleLocked(null /* starting */, 0 /* configChanges */, 503 !PRESERVE_WINDOWS); 504 mWindowContainerController.reparent(activityDisplay.mDisplayId, mTmpRect2, onTop); 505 } 506 507 /** 508 * Updates internal state after adding to new display. 509 * @param activityDisplay New display to which this stack was attached. 510 * @param bounds Updated bounds. 511 */ 512 private void postAddToDisplay(ActivityStackSupervisor.ActivityDisplay activityDisplay, 513 Rect bounds, boolean onTop) { 514 mDisplayId = activityDisplay.mDisplayId; 515 mStacks = activityDisplay.mStacks; 516 mBounds = bounds != null ? new Rect(bounds) : null; 517 mFullscreen = mBounds == null; 518 if (mTaskPositioner != null) { 519 mTaskPositioner.setDisplay(activityDisplay.mDisplay); 520 mTaskPositioner.configure(mBounds); 521 } 522 onParentChanged(); 523 524 activityDisplay.attachStack(this, findStackInsertIndex(onTop)); 525 if (mStackId == DOCKED_STACK_ID) { 526 // If we created a docked stack we want to resize it so it resizes all other stacks 527 // in the system. 528 mStackSupervisor.resizeDockedStackLocked( 529 mBounds, null, null, null, null, PRESERVE_WINDOWS); 530 } 531 } 532 533 /** 534 * Updates the inner state of the stack to remove it from its current parent, so it can be 535 * either destroyed completely or re-parented. 536 */ 537 private void removeFromDisplay() { 538 mDisplayId = Display.INVALID_DISPLAY; 539 mStacks = null; 540 if (mTaskPositioner != null) { 541 mTaskPositioner.reset(); 542 } 543 if (mStackId == DOCKED_STACK_ID) { 544 // If we removed a docked stack we want to resize it so it resizes all other stacks 545 // in the system to fullscreen. 546 mStackSupervisor.resizeDockedStackLocked( 547 null, null, null, null, null, PRESERVE_WINDOWS); 548 } 549 } 550 551 /** Removes the stack completely. Also calls WindowManager to do the same on its side. */ 552 void remove() { 553 removeFromDisplay(); 554 mStackSupervisor.deleteActivityContainerRecord(mStackId); 555 mWindowContainerController.removeContainer(); 556 mWindowContainerController = null; 557 onParentChanged(); 558 } 559 560 void getDisplaySize(Point out) { 561 mActivityContainer.mActivityDisplay.mDisplay.getSize(out); 562 } 563 564 /** 565 * @see ActivityStack.getStackDockedModeBounds(Rect, Rect, Rect, boolean) 566 */ 567 void getStackDockedModeBounds(Rect currentTempTaskBounds, Rect outStackBounds, 568 Rect outTempTaskBounds, boolean ignoreVisibility) { 569 mWindowContainerController.getStackDockedModeBounds(currentTempTaskBounds, 570 outStackBounds, outTempTaskBounds, ignoreVisibility); 571 } 572 573 void prepareFreezingTaskBounds() { 574 mWindowContainerController.prepareFreezingTaskBounds(); 575 } 576 577 void getWindowContainerBounds(Rect outBounds) { 578 if (mWindowContainerController != null) { 579 mWindowContainerController.getBounds(outBounds); 580 return; 581 } 582 outBounds.setEmpty(); 583 } 584 585 void getBoundsForNewConfiguration(Rect outBounds) { 586 mWindowContainerController.getBoundsForNewConfiguration(outBounds); 587 } 588 589 void positionChildWindowContainerAtTop(TaskRecord child) { 590 mWindowContainerController.positionChildAtTop(child.getWindowContainerController(), 591 true /* includingParents */); 592 } 593 594 /** 595 * Returns whether to defer the scheduling of the multi-window mode. 596 */ 597 boolean deferScheduleMultiWindowModeChanged() { 598 return false; 599 } 600 601 /** 602 * Defers updating the bounds of the stack. If the stack was resized/repositioned while 603 * deferring, the bounds will update in {@link #continueUpdateBounds()}. 604 */ 605 void deferUpdateBounds() { 606 if (!mUpdateBoundsDeferred) { 607 mUpdateBoundsDeferred = true; 608 mUpdateBoundsDeferredCalled = false; 609 } 610 } 611 612 /** 613 * Continues updating bounds after updates have been deferred. If there was a resize attempt 614 * between {@link #deferUpdateBounds()} and {@link #continueUpdateBounds()}, the stack will 615 * be resized to that bounds. 616 */ 617 void continueUpdateBounds() { 618 final boolean wasDeferred = mUpdateBoundsDeferred; 619 mUpdateBoundsDeferred = false; 620 if (wasDeferred && mUpdateBoundsDeferredCalled) { 621 resize(mDeferredBounds.isEmpty() ? null : mDeferredBounds, 622 mDeferredTaskBounds.isEmpty() ? null : mDeferredTaskBounds, 623 mDeferredTaskInsetBounds.isEmpty() ? null : mDeferredTaskInsetBounds); 624 } 625 } 626 627 boolean updateBoundsAllowed(Rect bounds, Rect tempTaskBounds, 628 Rect tempTaskInsetBounds) { 629 if (!mUpdateBoundsDeferred) { 630 return true; 631 } 632 if (bounds != null) { 633 mDeferredBounds.set(bounds); 634 } else { 635 mDeferredBounds.setEmpty(); 636 } 637 if (tempTaskBounds != null) { 638 mDeferredTaskBounds.set(tempTaskBounds); 639 } else { 640 mDeferredTaskBounds.setEmpty(); 641 } 642 if (tempTaskInsetBounds != null) { 643 mDeferredTaskInsetBounds.set(tempTaskInsetBounds); 644 } else { 645 mDeferredTaskInsetBounds.setEmpty(); 646 } 647 mUpdateBoundsDeferredCalled = true; 648 return false; 649 } 650 651 void setBounds(Rect bounds) { 652 mBounds = mFullscreen ? null : new Rect(bounds); 653 if (mTaskPositioner != null) { 654 mTaskPositioner.configure(bounds); 655 } 656 } 657 658 ActivityRecord topRunningActivityLocked() { 659 return topRunningActivityLocked(false /* focusableOnly */); 660 } 661 662 private ActivityRecord topRunningActivityLocked(boolean focusableOnly) { 663 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 664 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(); 665 if (r != null && (!focusableOnly || r.isFocusable())) { 666 return r; 667 } 668 } 669 return null; 670 } 671 672 ActivityRecord topRunningNonOverlayTaskActivity() { 673 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 674 final TaskRecord task = mTaskHistory.get(taskNdx); 675 final ArrayList<ActivityRecord> activities = task.mActivities; 676 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 677 final ActivityRecord r = activities.get(activityNdx); 678 if (!r.finishing && !r.mTaskOverlay) { 679 return r; 680 } 681 } 682 } 683 return null; 684 } 685 686 ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 687 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 688 final TaskRecord task = mTaskHistory.get(taskNdx); 689 final ArrayList<ActivityRecord> activities = task.mActivities; 690 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 691 ActivityRecord r = activities.get(activityNdx); 692 if (!r.finishing && !r.delayedResume && r != notTop && r.okToShowLocked()) { 693 return r; 694 } 695 } 696 } 697 return null; 698 } 699 700 /** 701 * This is a simplified version of topRunningActivityLocked that provides a number of 702 * optional skip-over modes. It is intended for use with the ActivityController hook only. 703 * 704 * @param token If non-null, any history records matching this token will be skipped. 705 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 706 * 707 * @return Returns the HistoryRecord of the next activity on the stack. 708 */ 709 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 710 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 711 TaskRecord task = mTaskHistory.get(taskNdx); 712 if (task.taskId == taskId) { 713 continue; 714 } 715 ArrayList<ActivityRecord> activities = task.mActivities; 716 for (int i = activities.size() - 1; i >= 0; --i) { 717 final ActivityRecord r = activities.get(i); 718 // Note: the taskId check depends on real taskId fields being non-zero 719 if (!r.finishing && (token != r.appToken) && r.okToShowLocked()) { 720 return r; 721 } 722 } 723 } 724 return null; 725 } 726 727 final ActivityRecord topActivity() { 728 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 729 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 730 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 731 final ActivityRecord r = activities.get(activityNdx); 732 if (!r.finishing) { 733 return r; 734 } 735 } 736 } 737 return null; 738 } 739 740 final TaskRecord topTask() { 741 final int size = mTaskHistory.size(); 742 if (size > 0) { 743 return mTaskHistory.get(size - 1); 744 } 745 return null; 746 } 747 748 TaskRecord taskForIdLocked(int id) { 749 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 750 final TaskRecord task = mTaskHistory.get(taskNdx); 751 if (task.taskId == id) { 752 return task; 753 } 754 } 755 return null; 756 } 757 758 ActivityRecord isInStackLocked(IBinder token) { 759 final ActivityRecord r = ActivityRecord.forTokenLocked(token); 760 return isInStackLocked(r); 761 } 762 763 ActivityRecord isInStackLocked(ActivityRecord r) { 764 if (r == null) { 765 return null; 766 } 767 final TaskRecord task = r.getTask(); 768 final ActivityStack stack = r.getStack(); 769 if (stack != null && task.mActivities.contains(r) && mTaskHistory.contains(task)) { 770 if (stack != this) Slog.w(TAG, 771 "Illegal state! task does not point to stack it is in."); 772 return r; 773 } 774 return null; 775 } 776 777 boolean isInStackLocked(TaskRecord task) { 778 return mTaskHistory.contains(task); 779 } 780 781 /** Checks if there are tasks with specific UID in the stack. */ 782 boolean isUidPresent(int uid) { 783 for (TaskRecord task : mTaskHistory) { 784 for (ActivityRecord r : task.mActivities) { 785 if (r.getUid() == uid) { 786 return true; 787 } 788 } 789 } 790 return false; 791 } 792 793 /** Get all UIDs that are present in the stack. */ 794 void getPresentUIDs(IntArray presentUIDs) { 795 for (TaskRecord task : mTaskHistory) { 796 for (ActivityRecord r : task.mActivities) { 797 presentUIDs.add(r.getUid()); 798 } 799 } 800 } 801 802 final void removeActivitiesFromLRUListLocked(TaskRecord task) { 803 for (ActivityRecord r : task.mActivities) { 804 mLRUActivities.remove(r); 805 } 806 } 807 808 final boolean updateLRUListLocked(ActivityRecord r) { 809 final boolean hadit = mLRUActivities.remove(r); 810 mLRUActivities.add(r); 811 return hadit; 812 } 813 814 final boolean isHomeStack() { 815 return mStackId == HOME_STACK_ID; 816 } 817 818 final boolean isRecentsStack() { 819 return mStackId == RECENTS_STACK_ID; 820 } 821 822 final boolean isHomeOrRecentsStack() { 823 return StackId.isHomeOrRecentsStack(mStackId); 824 } 825 826 final boolean isDockedStack() { 827 return mStackId == DOCKED_STACK_ID; 828 } 829 830 final boolean isPinnedStack() { 831 return mStackId == PINNED_STACK_ID; 832 } 833 834 final boolean isAssistantStack() { 835 return mStackId == ASSISTANT_STACK_ID; 836 } 837 838 final boolean isOnHomeDisplay() { 839 return isAttached() && 840 mActivityContainer.mActivityDisplay.mDisplayId == DEFAULT_DISPLAY; 841 } 842 843 void moveToFront(String reason) { 844 moveToFront(reason, null); 845 } 846 847 /** 848 * @param reason The reason for moving the stack to the front. 849 * @param task If non-null, the task will be moved to the top of the stack. 850 * */ 851 void moveToFront(String reason, TaskRecord task) { 852 if (!isAttached()) { 853 return; 854 } 855 856 mStacks.remove(this); 857 mStacks.add(findStackInsertIndex(ON_TOP), this); 858 mStackSupervisor.setFocusStackUnchecked(reason, this); 859 if (task != null) { 860 insertTaskAtTop(task, null); 861 return; 862 } 863 864 task = topTask(); 865 if (task != null) { 866 mWindowContainerController.positionChildAtTop(task.getWindowContainerController(), 867 true /* includingParents */); 868 } 869 } 870 871 /** 872 * @param task If non-null, the task will be moved to the back of the stack. 873 * */ 874 private void moveToBack(TaskRecord task) { 875 if (!isAttached()) { 876 return; 877 } 878 879 mStacks.remove(this); 880 mStacks.add(0, this); 881 882 if (task != null) { 883 mTaskHistory.remove(task); 884 mTaskHistory.add(0, task); 885 updateTaskMovement(task, false); 886 mWindowContainerController.positionChildAtBottom(task.getWindowContainerController()); 887 } 888 } 889 890 /** 891 * @return the index to insert a new stack into, taking the always-on-top stacks into account. 892 */ 893 private int findStackInsertIndex(boolean onTop) { 894 if (onTop) { 895 int addIndex = mStacks.size(); 896 if (addIndex > 0) { 897 final ActivityStack topStack = mStacks.get(addIndex - 1); 898 if (StackId.isAlwaysOnTop(topStack.mStackId) && topStack != this) { 899 // If the top stack is always on top, we move this stack just below it. 900 addIndex--; 901 } 902 } 903 return addIndex; 904 } else { 905 return 0; 906 } 907 } 908 909 boolean isFocusable() { 910 if (StackId.canReceiveKeys(mStackId)) { 911 return true; 912 } 913 // The stack isn't focusable. See if its top activity is focusable to force focus on the 914 // stack. 915 final ActivityRecord r = topRunningActivityLocked(); 916 return r != null && r.isFocusable(); 917 } 918 919 final boolean isAttached() { 920 return mStacks != null; 921 } 922 923 /** 924 * Returns the top activity in any existing task matching the given Intent in the input result. 925 * Returns null if no such task is found. 926 */ 927 void findTaskLocked(ActivityRecord target, FindTaskResult result) { 928 Intent intent = target.intent; 929 ActivityInfo info = target.info; 930 ComponentName cls = intent.getComponent(); 931 if (info.targetActivity != null) { 932 cls = new ComponentName(info.packageName, info.targetActivity); 933 } 934 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 935 boolean isDocument = intent != null & intent.isDocument(); 936 // If documentData is non-null then it must match the existing task data. 937 Uri documentData = isDocument ? intent.getData() : null; 938 939 if (DEBUG_TASKS) Slog.d(TAG_TASKS, "Looking for task of " + target + " in " + this); 940 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 941 final TaskRecord task = mTaskHistory.get(taskNdx); 942 if (task.voiceSession != null) { 943 // We never match voice sessions; those always run independently. 944 if (DEBUG_TASKS) Slog.d(TAG_TASKS, "Skipping " + task + ": voice session"); 945 continue; 946 } 947 if (task.userId != userId) { 948 // Looking for a different task. 949 if (DEBUG_TASKS) Slog.d(TAG_TASKS, "Skipping " + task + ": different user"); 950 continue; 951 } 952 final ActivityRecord r = task.getTopActivity(); 953 if (r == null || r.finishing || r.userId != userId || 954 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 955 if (DEBUG_TASKS) Slog.d(TAG_TASKS, "Skipping " + task + ": mismatch root " + r); 956 continue; 957 } 958 if (r.mActivityType != target.mActivityType) { 959 if (DEBUG_TASKS) Slog.d(TAG_TASKS, "Skipping " + task + ": mismatch activity type"); 960 continue; 961 } 962 963 final Intent taskIntent = task.intent; 964 final Intent affinityIntent = task.affinityIntent; 965 final boolean taskIsDocument; 966 final Uri taskDocumentData; 967 if (taskIntent != null && taskIntent.isDocument()) { 968 taskIsDocument = true; 969 taskDocumentData = taskIntent.getData(); 970 } else if (affinityIntent != null && affinityIntent.isDocument()) { 971 taskIsDocument = true; 972 taskDocumentData = affinityIntent.getData(); 973 } else { 974 taskIsDocument = false; 975 taskDocumentData = null; 976 } 977 978 if (DEBUG_TASKS) Slog.d(TAG_TASKS, "Comparing existing cls=" 979 + taskIntent.getComponent().flattenToShortString() 980 + "/aff=" + r.getTask().rootAffinity + " to new cls=" 981 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 982 // TODO Refactor to remove duplications. Check if logic can be simplified. 983 if (taskIntent != null && taskIntent.getComponent() != null && 984 taskIntent.getComponent().compareTo(cls) == 0 && 985 Objects.equals(documentData, taskDocumentData)) { 986 if (DEBUG_TASKS) Slog.d(TAG_TASKS, "Found matching class!"); 987 //dump(); 988 if (DEBUG_TASKS) Slog.d(TAG_TASKS, 989 "For Intent " + intent + " bringing to top: " + r.intent); 990 result.r = r; 991 result.matchedByRootAffinity = false; 992 break; 993 } else if (affinityIntent != null && affinityIntent.getComponent() != null && 994 affinityIntent.getComponent().compareTo(cls) == 0 && 995 Objects.equals(documentData, taskDocumentData)) { 996 if (DEBUG_TASKS) Slog.d(TAG_TASKS, "Found matching class!"); 997 //dump(); 998 if (DEBUG_TASKS) Slog.d(TAG_TASKS, 999 "For Intent " + intent + " bringing to top: " + r.intent); 1000 result.r = r; 1001 result.matchedByRootAffinity = false; 1002 break; 1003 } else if (!isDocument && !taskIsDocument 1004 && result.r == null && task.rootAffinity != null) { 1005 if (task.rootAffinity.equals(target.taskAffinity)) { 1006 if (DEBUG_TASKS) Slog.d(TAG_TASKS, "Found matching affinity candidate!"); 1007 // It is possible for multiple tasks to have the same root affinity especially 1008 // if they are in separate stacks. We save off this candidate, but keep looking 1009 // to see if there is a better candidate. 1010 result.r = r; 1011 result.matchedByRootAffinity = true; 1012 } 1013 } else if (DEBUG_TASKS) Slog.d(TAG_TASKS, "Not a match: " + task); 1014 } 1015 } 1016 1017 /** 1018 * Returns the first activity (starting from the top of the stack) that 1019 * is the same as the given activity. Returns null if no such activity 1020 * is found. 1021 */ 1022 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info, 1023 boolean compareIntentFilters) { 1024 ComponentName cls = intent.getComponent(); 1025 if (info.targetActivity != null) { 1026 cls = new ComponentName(info.packageName, info.targetActivity); 1027 } 1028 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 1029 1030 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1031 final TaskRecord task = mTaskHistory.get(taskNdx); 1032 final ArrayList<ActivityRecord> activities = task.mActivities; 1033 1034 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1035 ActivityRecord r = activities.get(activityNdx); 1036 if (!r.okToShowLocked()) { 1037 continue; 1038 } 1039 if (!r.finishing && r.userId == userId) { 1040 if (compareIntentFilters) { 1041 if (r.intent.filterEquals(intent)) { 1042 return r; 1043 } 1044 } else { 1045 if (r.intent.getComponent().equals(cls)) { 1046 return r; 1047 } 1048 } 1049 } 1050 } 1051 } 1052 1053 return null; 1054 } 1055 1056 /* 1057 * Move the activities around in the stack to bring a user to the foreground. 1058 */ 1059 final void switchUserLocked(int userId) { 1060 if (mCurrentUser == userId) { 1061 return; 1062 } 1063 mCurrentUser = userId; 1064 1065 // Move userId's tasks to the top. 1066 int index = mTaskHistory.size(); 1067 for (int i = 0; i < index; ) { 1068 final TaskRecord task = mTaskHistory.get(i); 1069 1070 if (task.okToShowLocked()) { 1071 if (DEBUG_TASKS) Slog.d(TAG_TASKS, "switchUserLocked: stack=" + getStackId() + 1072 " moving " + task + " to top"); 1073 mTaskHistory.remove(i); 1074 mTaskHistory.add(task); 1075 --index; 1076 // Use same value for i. 1077 } else { 1078 ++i; 1079 } 1080 } 1081 } 1082 1083 void minimalResumeActivityLocked(ActivityRecord r) { 1084 if (DEBUG_STATES) Slog.v(TAG_STATES, "Moving to RESUMED: " + r + " (starting new instance)" 1085 + " callers=" + Debug.getCallers(5)); 1086 setResumedActivityLocked(r, "minimalResumeActivityLocked"); 1087 r.completeResumeLocked(); 1088 setLaunchTime(r); 1089 if (DEBUG_SAVED_STATE) Slog.i(TAG_SAVED_STATE, 1090 "Launch completed; removing icicle of " + r.icicle); 1091 } 1092 1093 void addRecentActivityLocked(ActivityRecord r) { 1094 if (r != null) { 1095 final TaskRecord task = r.getTask(); 1096 mRecentTasks.addLocked(task); 1097 task.touchActiveTime(); 1098 } 1099 } 1100 1101 private void startLaunchTraces(String packageName) { 1102 if (mFullyDrawnStartTime != 0) { 1103 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 1104 } 1105 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching: " + packageName, 0); 1106 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 1107 } 1108 1109 private void stopFullyDrawnTraceIfNeeded() { 1110 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 1111 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 1112 mFullyDrawnStartTime = 0; 1113 } 1114 } 1115 1116 void setLaunchTime(ActivityRecord r) { 1117 if (r.displayStartTime == 0) { 1118 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 1119 if (mLaunchStartTime == 0) { 1120 startLaunchTraces(r.packageName); 1121 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 1122 } 1123 } else if (mLaunchStartTime == 0) { 1124 startLaunchTraces(r.packageName); 1125 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 1126 } 1127 } 1128 1129 private void clearLaunchTime(ActivityRecord r) { 1130 // Make sure that there is no activity waiting for this to launch. 1131 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 1132 r.displayStartTime = r.fullyDrawnStartTime = 0; 1133 } else { 1134 mStackSupervisor.removeTimeoutsForActivityLocked(r); 1135 mStackSupervisor.scheduleIdleTimeoutLocked(r); 1136 } 1137 } 1138 1139 void awakeFromSleepingLocked() { 1140 // Ensure activities are no longer sleeping. 1141 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1142 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1143 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1144 activities.get(activityNdx).setSleeping(false); 1145 } 1146 } 1147 if (mPausingActivity != null) { 1148 Slog.d(TAG, "awakeFromSleepingLocked: previously pausing activity didn't pause"); 1149 activityPausedLocked(mPausingActivity.appToken, true); 1150 } 1151 } 1152 1153 void updateActivityApplicationInfoLocked(ApplicationInfo aInfo) { 1154 final String packageName = aInfo.packageName; 1155 final int userId = UserHandle.getUserId(aInfo.uid); 1156 1157 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1158 final List<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1159 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1160 final ActivityRecord ar = activities.get(activityNdx); 1161 1162 if ((userId == ar.userId) && packageName.equals(ar.packageName)) { 1163 ar.info.applicationInfo = aInfo; 1164 } 1165 } 1166 } 1167 } 1168 1169 /** 1170 * @return true if something must be done before going to sleep. 1171 */ 1172 boolean checkReadyForSleepLocked() { 1173 if (mResumedActivity != null) { 1174 // Still have something resumed; can't sleep until it is paused. 1175 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Sleep needs to pause " + mResumedActivity); 1176 if (DEBUG_USER_LEAVING) Slog.v(TAG_USER_LEAVING, 1177 "Sleep => pause with userLeaving=false"); 1178 1179 // If we are in the middle of resuming the top activity in 1180 // {@link #resumeTopActivityUncheckedLocked}, mResumedActivity will be set but not 1181 // resumed yet. We must not proceed pausing the activity here. This method will be 1182 // called again if necessary as part of 1183 // {@link ActivityStackSupervisor#checkReadyForSleepLocked}. 1184 if (mStackSupervisor.inResumeTopActivity) { 1185 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "In the middle of resuming top activity " 1186 + mResumedActivity); 1187 return true; 1188 } 1189 1190 startPausingLocked(false, true, null, false); 1191 return true; 1192 } 1193 if (mPausingActivity != null) { 1194 // Still waiting for something to pause; can't sleep yet. 1195 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Sleep still waiting to pause " + mPausingActivity); 1196 return true; 1197 } 1198 1199 if (hasVisibleBehindActivity()) { 1200 // Stop visible behind activity before going to sleep. 1201 final ActivityRecord r = getVisibleBehindActivity(); 1202 mStackSupervisor.mStoppingActivities.add(r); 1203 if (DEBUG_STATES) Slog.v(TAG_STATES, "Sleep still waiting to stop visible behind " + r); 1204 return true; 1205 } 1206 1207 return false; 1208 } 1209 1210 void goToSleep() { 1211 ensureActivitiesVisibleLocked(null, 0, !PRESERVE_WINDOWS); 1212 1213 // Make sure any paused or stopped but visible activities are now sleeping. 1214 // This ensures that the activity's onStop() is called. 1215 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1216 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1217 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1218 final ActivityRecord r = activities.get(activityNdx); 1219 if (r.state == STOPPING || r.state == STOPPED 1220 || r.state == ActivityState.PAUSED || r.state == ActivityState.PAUSING) { 1221 r.setSleeping(true); 1222 } 1223 } 1224 } 1225 } 1226 1227 /** 1228 * Schedule a pause timeout in case the app doesn't respond. We don't give it much time because 1229 * this directly impacts the responsiveness seen by the user. 1230 */ 1231 private void schedulePauseTimeout(ActivityRecord r) { 1232 final Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 1233 msg.obj = r; 1234 r.pauseTime = SystemClock.uptimeMillis(); 1235 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 1236 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Waiting for pause to complete..."); 1237 } 1238 1239 /** 1240 * Start pausing the currently resumed activity. It is an error to call this if there 1241 * is already an activity being paused or there is no resumed activity. 1242 * 1243 * @param userLeaving True if this should result in an onUserLeaving to the current activity. 1244 * @param uiSleeping True if this is happening with the user interface going to sleep (the 1245 * screen turning off). 1246 * @param resuming The activity we are currently trying to resume or null if this is not being 1247 * called as part of resuming the top activity, so we shouldn't try to instigate 1248 * a resume here if not null. 1249 * @param pauseImmediately True if the caller does not want to wait for the activity callback to 1250 * complete pausing. 1251 * @return Returns true if an activity now is in the PAUSING state, and we are waiting for 1252 * it to tell us when it is done. 1253 */ 1254 final boolean startPausingLocked(boolean userLeaving, boolean uiSleeping, 1255 ActivityRecord resuming, boolean pauseImmediately) { 1256 if (mPausingActivity != null) { 1257 Slog.wtf(TAG, "Going to pause when pause is already pending for " + mPausingActivity 1258 + " state=" + mPausingActivity.state); 1259 if (!mService.isSleepingLocked()) { 1260 // Avoid recursion among check for sleep and complete pause during sleeping. 1261 // Because activity will be paused immediately after resume, just let pause 1262 // be completed by the order of activity paused from clients. 1263 completePauseLocked(false, resuming); 1264 } 1265 } 1266 ActivityRecord prev = mResumedActivity; 1267 1268 if (prev == null) { 1269 if (resuming == null) { 1270 Slog.wtf(TAG, "Trying to pause when nothing is resumed"); 1271 mStackSupervisor.resumeFocusedStackTopActivityLocked(); 1272 } 1273 return false; 1274 } 1275 1276 if (mActivityContainer.mParentActivity == null) { 1277 // Top level stack, not a child. Look for child stacks. 1278 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping, resuming, 1279 pauseImmediately); 1280 } 1281 1282 if (DEBUG_STATES) Slog.v(TAG_STATES, "Moving to PAUSING: " + prev); 1283 else if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Start pausing: " + prev); 1284 mResumedActivity = null; 1285 mPausingActivity = prev; 1286 mLastPausedActivity = prev; 1287 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 1288 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 1289 prev.state = ActivityState.PAUSING; 1290 prev.getTask().touchActiveTime(); 1291 clearLaunchTime(prev); 1292 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 1293 if (mService.mHasRecents 1294 && (next == null || next.noDisplay || next.getTask() != prev.getTask() 1295 || uiSleeping)) { 1296 prev.mUpdateTaskThumbnailWhenHidden = true; 1297 } 1298 stopFullyDrawnTraceIfNeeded(); 1299 1300 mService.updateCpuStats(); 1301 1302 if (prev.app != null && prev.app.thread != null) { 1303 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Enqueueing pending pause: " + prev); 1304 try { 1305 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 1306 prev.userId, System.identityHashCode(prev), 1307 prev.shortComponentName); 1308 mService.updateUsageStats(prev, false); 1309 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 1310 userLeaving, prev.configChangeFlags, pauseImmediately); 1311 } catch (Exception e) { 1312 // Ignore exception, if process died other code will cleanup. 1313 Slog.w(TAG, "Exception thrown during pause", e); 1314 mPausingActivity = null; 1315 mLastPausedActivity = null; 1316 mLastNoHistoryActivity = null; 1317 } 1318 } else { 1319 mPausingActivity = null; 1320 mLastPausedActivity = null; 1321 mLastNoHistoryActivity = null; 1322 } 1323 1324 // If we are not going to sleep, we want to ensure the device is 1325 // awake until the next activity is started. 1326 if (!uiSleeping && !mService.isSleepingOrShuttingDownLocked()) { 1327 mStackSupervisor.acquireLaunchWakelock(); 1328 } 1329 1330 if (mPausingActivity != null) { 1331 // Have the window manager pause its key dispatching until the new 1332 // activity has started. If we're pausing the activity just because 1333 // the screen is being turned off and the UI is sleeping, don't interrupt 1334 // key dispatch; the same activity will pick it up again on wakeup. 1335 if (!uiSleeping) { 1336 prev.pauseKeyDispatchingLocked(); 1337 } else if (DEBUG_PAUSE) { 1338 Slog.v(TAG_PAUSE, "Key dispatch not paused for screen off"); 1339 } 1340 1341 if (pauseImmediately) { 1342 // If the caller said they don't want to wait for the pause, then complete 1343 // the pause now. 1344 completePauseLocked(false, resuming); 1345 return false; 1346 1347 } else { 1348 schedulePauseTimeout(prev); 1349 return true; 1350 } 1351 1352 } else { 1353 // This activity failed to schedule the 1354 // pause, so just treat it as being paused now. 1355 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Activity not running, resuming next."); 1356 if (resuming == null) { 1357 mStackSupervisor.resumeFocusedStackTopActivityLocked(); 1358 } 1359 return false; 1360 } 1361 } 1362 1363 final void activityPausedLocked(IBinder token, boolean timeout) { 1364 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, 1365 "Activity paused: token=" + token + ", timeout=" + timeout); 1366 1367 final ActivityRecord r = isInStackLocked(token); 1368 if (r != null) { 1369 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 1370 if (mPausingActivity == r) { 1371 if (DEBUG_STATES) Slog.v(TAG_STATES, "Moving to PAUSED: " + r 1372 + (timeout ? " (due to timeout)" : " (pause complete)")); 1373 mService.mWindowManager.deferSurfaceLayout(); 1374 try { 1375 completePauseLocked(true /* resumeNext */, null /* resumingActivity */); 1376 } finally { 1377 mService.mWindowManager.continueSurfaceLayout(); 1378 } 1379 return; 1380 } else { 1381 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 1382 r.userId, System.identityHashCode(r), r.shortComponentName, 1383 mPausingActivity != null 1384 ? mPausingActivity.shortComponentName : "(none)"); 1385 if (r.state == ActivityState.PAUSING) { 1386 r.state = ActivityState.PAUSED; 1387 if (r.finishing) { 1388 if (DEBUG_PAUSE) Slog.v(TAG, 1389 "Executing finish of failed to pause activity: " + r); 1390 finishCurrentActivityLocked(r, FINISH_AFTER_VISIBLE, false); 1391 } 1392 } 1393 } 1394 } 1395 mStackSupervisor.ensureActivitiesVisibleLocked(null, 0, !PRESERVE_WINDOWS); 1396 } 1397 1398 private void completePauseLocked(boolean resumeNext, ActivityRecord resuming) { 1399 ActivityRecord prev = mPausingActivity; 1400 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Complete pause: " + prev); 1401 1402 if (prev != null) { 1403 final boolean wasStopping = prev.state == STOPPING; 1404 prev.state = ActivityState.PAUSED; 1405 if (prev.finishing) { 1406 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Executing finish of activity: " + prev); 1407 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 1408 } else if (prev.app != null) { 1409 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Enqueue pending stop if needed: " + prev 1410 + " wasStopping=" + wasStopping + " visible=" + prev.visible); 1411 if (mStackSupervisor.mActivitiesWaitingForVisibleActivity.remove(prev)) { 1412 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v(TAG_PAUSE, 1413 "Complete pause, no longer waiting: " + prev); 1414 } 1415 if (prev.deferRelaunchUntilPaused) { 1416 // Complete the deferred relaunch that was waiting for pause to complete. 1417 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Re-launching after pause: " + prev); 1418 prev.relaunchActivityLocked(false /* andResume */, 1419 prev.preserveWindowOnDeferredRelaunch); 1420 } else if (wasStopping) { 1421 // We are also stopping, the stop request must have gone soon after the pause. 1422 // We can't clobber it, because the stop confirmation will not be handled. 1423 // We don't need to schedule another stop, we only need to let it happen. 1424 prev.state = STOPPING; 1425 } else if ((!prev.visible && !hasVisibleBehindActivity()) 1426 || mService.isSleepingOrShuttingDownLocked()) { 1427 // Clear out any deferred client hide we might currently have. 1428 prev.setDeferHidingClient(false); 1429 // If we were visible then resumeTopActivities will release resources before 1430 // stopping. 1431 addToStopping(prev, true /* scheduleIdle */, false /* idleDelayed */); 1432 } 1433 } else { 1434 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "App died during pause, not stopping: " + prev); 1435 prev = null; 1436 } 1437 // It is possible the activity was freezing the screen before it was paused. 1438 // In that case go ahead and remove the freeze this activity has on the screen 1439 // since it is no longer visible. 1440 if (prev != null) { 1441 prev.stopFreezingScreenLocked(true /*force*/); 1442 } 1443 mPausingActivity = null; 1444 } 1445 1446 if (resumeNext) { 1447 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 1448 if (!mService.isSleepingOrShuttingDownLocked()) { 1449 mStackSupervisor.resumeFocusedStackTopActivityLocked(topStack, prev, null); 1450 } else { 1451 mStackSupervisor.checkReadyForSleepLocked(); 1452 ActivityRecord top = topStack.topRunningActivityLocked(); 1453 if (top == null || (prev != null && top != prev)) { 1454 // If there are no more activities available to run, do resume anyway to start 1455 // something. Also if the top activity on the stack is not the just paused 1456 // activity, we need to go ahead and resume it to ensure we complete an 1457 // in-flight app switch. 1458 mStackSupervisor.resumeFocusedStackTopActivityLocked(); 1459 } 1460 } 1461 } 1462 1463 if (prev != null) { 1464 prev.resumeKeyDispatchingLocked(); 1465 1466 if (prev.app != null && prev.cpuTimeAtResume > 0 1467 && mService.mBatteryStatsService.isOnBattery()) { 1468 long diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 1469 - prev.cpuTimeAtResume; 1470 if (diff > 0) { 1471 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 1472 synchronized (bsi) { 1473 BatteryStatsImpl.Uid.Proc ps = 1474 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 1475 prev.info.packageName); 1476 if (ps != null) { 1477 ps.addForegroundTimeLocked(diff); 1478 } 1479 } 1480 } 1481 } 1482 prev.cpuTimeAtResume = 0; // reset it 1483 } 1484 1485 // Notify when the task stack has changed, but only if visibilities changed (not just 1486 // focus). Also if there is an active pinned stack - we always want to notify it about 1487 // task stack changes, because its positioning may depend on it. 1488 if (mStackSupervisor.mAppVisibilitiesChangedSinceLastPause 1489 || mService.mStackSupervisor.getStack(PINNED_STACK_ID) != null) { 1490 mService.mTaskChangeNotificationController.notifyTaskStackChanged(); 1491 mStackSupervisor.mAppVisibilitiesChangedSinceLastPause = false; 1492 } 1493 1494 mStackSupervisor.ensureActivitiesVisibleLocked(resuming, 0, !PRESERVE_WINDOWS); 1495 } 1496 1497 void addToStopping(ActivityRecord r, boolean scheduleIdle, boolean idleDelayed) { 1498 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1499 mStackSupervisor.mStoppingActivities.add(r); 1500 } 1501 1502 // If we already have a few activities waiting to stop, then give up 1503 // on things going idle and start clearing them out. Or if r is the 1504 // last of activity of the last task the stack will be empty and must 1505 // be cleared immediately. 1506 boolean forceIdle = mStackSupervisor.mStoppingActivities.size() > MAX_STOPPING_TO_FORCE 1507 || (r.frontOfTask && mTaskHistory.size() <= 1); 1508 if (scheduleIdle || forceIdle) { 1509 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Scheduling idle now: forceIdle=" 1510 + forceIdle + "immediate=" + !idleDelayed); 1511 if (!idleDelayed) { 1512 mStackSupervisor.scheduleIdleLocked(); 1513 } else { 1514 mStackSupervisor.scheduleIdleTimeoutLocked(r); 1515 } 1516 } else { 1517 mStackSupervisor.checkReadyForSleepLocked(); 1518 } 1519 } 1520 1521 // Find the first visible activity above the passed activity and if it is translucent return it 1522 // otherwise return null; 1523 ActivityRecord findNextTranslucentActivity(ActivityRecord r) { 1524 TaskRecord task = r.getTask(); 1525 if (task == null) { 1526 return null; 1527 } 1528 1529 final ActivityStack stack = task.getStack(); 1530 if (stack == null) { 1531 return null; 1532 } 1533 1534 int stackNdx = mStacks.indexOf(stack); 1535 1536 ArrayList<TaskRecord> tasks = stack.mTaskHistory; 1537 int taskNdx = tasks.indexOf(task); 1538 1539 ArrayList<ActivityRecord> activities = task.mActivities; 1540 int activityNdx = activities.indexOf(r) + 1; 1541 1542 final int numStacks = mStacks.size(); 1543 while (stackNdx < numStacks) { 1544 final ActivityStack historyStack = mStacks.get(stackNdx); 1545 tasks = historyStack.mTaskHistory; 1546 final int numTasks = tasks.size(); 1547 while (taskNdx < numTasks) { 1548 final TaskRecord currentTask = tasks.get(taskNdx); 1549 activities = currentTask.mActivities; 1550 final int numActivities = activities.size(); 1551 while (activityNdx < numActivities) { 1552 final ActivityRecord activity = activities.get(activityNdx); 1553 if (!activity.finishing) { 1554 return historyStack.mFullscreen 1555 && currentTask.mFullscreen && activity.fullscreen ? null : activity; 1556 } 1557 ++activityNdx; 1558 } 1559 activityNdx = 0; 1560 ++taskNdx; 1561 } 1562 taskNdx = 0; 1563 ++stackNdx; 1564 } 1565 1566 return null; 1567 } 1568 1569 /** Returns true if the stack contains a fullscreen task. */ 1570 private boolean hasFullscreenTask() { 1571 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 1572 final TaskRecord task = mTaskHistory.get(i); 1573 if (task.mFullscreen) { 1574 return true; 1575 } 1576 } 1577 return false; 1578 } 1579 1580 /** 1581 * Returns true if the stack is translucent and can have other contents visible behind it if 1582 * needed. A stack is considered translucent if it don't contain a visible or 1583 * starting (about to be visible) activity that is fullscreen (opaque). 1584 * @param starting The currently starting activity or null if there is none. 1585 * @param stackBehindId The id of the stack directly behind this one. 1586 */ 1587 private boolean isStackTranslucent(ActivityRecord starting, int stackBehindId) { 1588 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1589 final TaskRecord task = mTaskHistory.get(taskNdx); 1590 final ArrayList<ActivityRecord> activities = task.mActivities; 1591 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1592 final ActivityRecord r = activities.get(activityNdx); 1593 1594 if (r.finishing) { 1595 // We don't factor in finishing activities when determining translucency since 1596 // they will be gone soon. 1597 continue; 1598 } 1599 1600 if (!r.visible && r != starting) { 1601 // Also ignore invisible activities that are not the currently starting 1602 // activity (about to be visible). 1603 continue; 1604 } 1605 1606 if (r.fullscreen) { 1607 // Stack isn't translucent if it has at least one fullscreen activity 1608 // that is visible. 1609 return false; 1610 } 1611 1612 if (!isHomeOrRecentsStack() && r.frontOfTask && task.isOverHomeStack() 1613 && !StackId.isHomeOrRecentsStack(stackBehindId) && !isAssistantStack()) { 1614 // Stack isn't translucent if it's top activity should have the home stack 1615 // behind it and the stack currently behind it isn't the home or recents stack 1616 // or the assistant stack. 1617 return false; 1618 } 1619 } 1620 } 1621 return true; 1622 } 1623 1624 /** Returns true if the stack is currently considered visible. */ 1625 boolean isVisible() { 1626 return mWindowContainerController != null && mWindowContainerController.isVisible() 1627 && !mForceHidden; 1628 } 1629 1630 /** 1631 * Returns what the stack visibility should be: {@link #STACK_INVISIBLE}, {@link #STACK_VISIBLE} 1632 * or {@link #STACK_VISIBLE_ACTIVITY_BEHIND}. 1633 * 1634 * @param starting The currently starting activity or null if there is none. 1635 */ 1636 int shouldBeVisible(ActivityRecord starting) { 1637 if (!isAttached() || mForceHidden) { 1638 return STACK_INVISIBLE; 1639 } 1640 1641 if (mStackSupervisor.isFrontStackOnDisplay(this) || mStackSupervisor.isFocusedStack(this)) { 1642 return STACK_VISIBLE; 1643 } 1644 1645 final int stackIndex = mStacks.indexOf(this); 1646 1647 if (stackIndex == mStacks.size() - 1) { 1648 Slog.wtf(TAG, 1649 "Stack=" + this + " isn't front stack but is at the top of the stack list"); 1650 return STACK_INVISIBLE; 1651 } 1652 1653 // Check position and visibility of this stack relative to the front stack on its display. 1654 final ActivityStack topStack = getTopStackOnDisplay(); 1655 final int topStackId = topStack.mStackId; 1656 1657 if (StackId.isBackdropToTranslucentActivity(mStackId) 1658 && hasVisibleBehindActivity() && StackId.isHomeOrRecentsStack(topStackId) 1659 && (topStack.topActivity() == null || !topStack.topActivity().fullscreen)) { 1660 // The fullscreen or assistant stack should be visible if it has a visible behind 1661 // activity behind the home or recents stack that is translucent. 1662 return STACK_VISIBLE_ACTIVITY_BEHIND; 1663 } 1664 1665 if (mStackId == DOCKED_STACK_ID) { 1666 // If the assistant stack is focused and translucent, then the docked stack is always 1667 // visible 1668 if (topStack.isAssistantStack()) { 1669 return (topStack.isStackTranslucent(starting, DOCKED_STACK_ID)) ? STACK_VISIBLE 1670 : STACK_INVISIBLE; 1671 } 1672 return STACK_VISIBLE; 1673 } 1674 1675 // Set home stack to invisible when it is below but not immediately below the docked stack 1676 // A case would be if recents stack exists but has no tasks and is below the docked stack 1677 // and home stack is below recents 1678 if (mStackId == HOME_STACK_ID) { 1679 int dockedStackIndex = mStacks.indexOf(mStackSupervisor.getStack(DOCKED_STACK_ID)); 1680 if (dockedStackIndex > stackIndex && stackIndex != dockedStackIndex - 1) { 1681 return STACK_INVISIBLE; 1682 } 1683 } 1684 1685 // Find the first stack behind front stack that actually got something visible. 1686 int stackBehindTopIndex = mStacks.indexOf(topStack) - 1; 1687 while (stackBehindTopIndex >= 0 && 1688 mStacks.get(stackBehindTopIndex).topRunningActivityLocked() == null) { 1689 stackBehindTopIndex--; 1690 } 1691 final int stackBehindTopId = (stackBehindTopIndex >= 0) 1692 ? mStacks.get(stackBehindTopIndex).mStackId : INVALID_STACK_ID; 1693 if ((topStackId == DOCKED_STACK_ID || topStackId == PINNED_STACK_ID) 1694 && (stackIndex == stackBehindTopIndex 1695 || (stackBehindTopId == DOCKED_STACK_ID 1696 && stackIndex == stackBehindTopIndex - 1))) { 1697 // Stacks directly behind the docked or pinned stack are always visible. 1698 // Also this stack is visible if behind docked stack and the docked stack is behind the 1699 // top-most pinned stack 1700 return STACK_VISIBLE; 1701 } 1702 1703 if (StackId.isBackdropToTranslucentActivity(topStackId) 1704 && topStack.isStackTranslucent(starting, stackBehindTopId)) { 1705 // Stacks behind the fullscreen or assistant stack with a translucent activity are 1706 // always visible so they can act as a backdrop to the translucent activity. 1707 // For example, dialog activities 1708 if (stackIndex == stackBehindTopIndex) { 1709 return STACK_VISIBLE; 1710 } 1711 if (stackBehindTopIndex >= 0) { 1712 if ((stackBehindTopId == DOCKED_STACK_ID 1713 || stackBehindTopId == PINNED_STACK_ID) 1714 && stackIndex == (stackBehindTopIndex - 1)) { 1715 // The stack behind the docked or pinned stack is also visible so we can have a 1716 // complete backdrop to the translucent activity when the docked stack is up. 1717 return STACK_VISIBLE; 1718 } 1719 } 1720 } 1721 1722 if (StackId.isStaticStack(mStackId)) { 1723 // Visibility of any static stack should have been determined by the conditions above. 1724 return STACK_INVISIBLE; 1725 } 1726 1727 for (int i = stackIndex + 1; i < mStacks.size(); i++) { 1728 final ActivityStack stack = mStacks.get(i); 1729 1730 if (!stack.mFullscreen && !stack.hasFullscreenTask()) { 1731 continue; 1732 } 1733 1734 if (!StackId.isDynamicStacksVisibleBehindAllowed(stack.mStackId)) { 1735 // These stacks can't have any dynamic stacks visible behind them. 1736 return STACK_INVISIBLE; 1737 } 1738 1739 if (!stack.isStackTranslucent(starting, INVALID_STACK_ID)) { 1740 return STACK_INVISIBLE; 1741 } 1742 } 1743 1744 return STACK_VISIBLE; 1745 } 1746 1747 final int rankTaskLayers(int baseLayer) { 1748 int layer = 0; 1749 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1750 final TaskRecord task = mTaskHistory.get(taskNdx); 1751 ActivityRecord r = task.topRunningActivityLocked(); 1752 if (r == null || r.finishing || !r.visible) { 1753 task.mLayerRank = -1; 1754 } else { 1755 task.mLayerRank = baseLayer + layer++; 1756 } 1757 } 1758 return layer; 1759 } 1760 1761 /** 1762 * Make sure that all activities that need to be visible (that is, they 1763 * currently can be seen by the user) actually are. 1764 */ 1765 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges, 1766 boolean preserveWindows) { 1767 mTopActivityOccludesKeyguard = false; 1768 mTopDismissingKeyguardActivity = null; 1769 mStackSupervisor.mKeyguardController.beginActivityVisibilityUpdate(); 1770 try { 1771 ActivityRecord top = topRunningActivityLocked(); 1772 if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, "ensureActivitiesVisible behind " + top 1773 + " configChanges=0x" + Integer.toHexString(configChanges)); 1774 if (top != null) { 1775 checkTranslucentActivityWaiting(top); 1776 } 1777 1778 // If the top activity is not fullscreen, then we need to 1779 // make sure any activities under it are now visible. 1780 boolean aboveTop = top != null; 1781 final int stackVisibility = shouldBeVisible(starting); 1782 final boolean stackInvisible = stackVisibility != STACK_VISIBLE; 1783 final boolean stackVisibleBehind = stackVisibility == STACK_VISIBLE_ACTIVITY_BEHIND; 1784 boolean behindFullscreenActivity = stackInvisible; 1785 boolean resumeNextActivity = mStackSupervisor.isFocusedStack(this) 1786 && (isInStackLocked(starting) == null); 1787 boolean behindTranslucentActivity = false; 1788 final ActivityRecord visibleBehind = getVisibleBehindActivity(); 1789 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1790 final TaskRecord task = mTaskHistory.get(taskNdx); 1791 final ArrayList<ActivityRecord> activities = task.mActivities; 1792 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1793 final ActivityRecord r = activities.get(activityNdx); 1794 if (r.finishing) { 1795 // Normally the screenshot will be taken in makeInvisible(). When an activity 1796 // is finishing, we no longer change its visibility, but we still need to take 1797 // the screenshots if startPausingLocked decided it should be taken. 1798 if (r.mUpdateTaskThumbnailWhenHidden) { 1799 r.updateThumbnailLocked(r.screenshotActivityLocked(), 1800 null /* description */); 1801 r.mUpdateTaskThumbnailWhenHidden = false; 1802 } 1803 continue; 1804 } 1805 final boolean isTop = r == top; 1806 if (aboveTop && !isTop) { 1807 continue; 1808 } 1809 aboveTop = false; 1810 1811 // Check whether activity should be visible without Keyguard influence 1812 final boolean visibleIgnoringKeyguard = r.shouldBeVisibleIgnoringKeyguard( 1813 behindTranslucentActivity, stackVisibleBehind, visibleBehind, 1814 behindFullscreenActivity); 1815 r.visibleIgnoringKeyguard = visibleIgnoringKeyguard; 1816 1817 // Now check whether it's really visible depending on Keyguard state. 1818 final boolean reallyVisible = checkKeyguardVisibility(r, 1819 visibleIgnoringKeyguard, isTop); 1820 if (visibleIgnoringKeyguard) { 1821 behindFullscreenActivity = updateBehindFullscreen(stackInvisible, 1822 behindFullscreenActivity, task, r); 1823 if (behindFullscreenActivity && !r.fullscreen) { 1824 behindTranslucentActivity = true; 1825 } 1826 } 1827 if (reallyVisible) { 1828 if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, "Make visible? " + r 1829 + " finishing=" + r.finishing + " state=" + r.state); 1830 // First: if this is not the current activity being started, make 1831 // sure it matches the current configuration. 1832 if (r != starting) { 1833 r.ensureActivityConfigurationLocked(0 /* globalChanges */, preserveWindows); 1834 } 1835 1836 if (r.app == null || r.app.thread == null) { 1837 if (makeVisibleAndRestartIfNeeded(starting, configChanges, isTop, 1838 resumeNextActivity, r)) { 1839 if (activityNdx >= activities.size()) { 1840 // Record may be removed if its process needs to restart. 1841 activityNdx = activities.size() - 1; 1842 } else { 1843 resumeNextActivity = false; 1844 } 1845 } 1846 } else if (r.visible) { 1847 // If this activity is already visible, then there is nothing to do here. 1848 if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, 1849 "Skipping: already visible at " + r); 1850 1851 if (r.handleAlreadyVisible()) { 1852 resumeNextActivity = false; 1853 } 1854 } else { 1855 r.makeVisibleIfNeeded(starting); 1856 } 1857 // Aggregate current change flags. 1858 configChanges |= r.configChangeFlags; 1859 } else { 1860 if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, "Make invisible? " + r 1861 + " finishing=" + r.finishing + " state=" + r.state + " stackInvisible=" 1862 + stackInvisible + " behindFullscreenActivity=" 1863 + behindFullscreenActivity + " mLaunchTaskBehind=" 1864 + r.mLaunchTaskBehind); 1865 makeInvisible(r, visibleBehind); 1866 } 1867 } 1868 if (mStackId == FREEFORM_WORKSPACE_STACK_ID) { 1869 // The visibility of tasks and the activities they contain in freeform stack are 1870 // determined individually unlike other stacks where the visibility or fullscreen 1871 // status of an activity in a previous task affects other. 1872 behindFullscreenActivity = stackVisibility == STACK_INVISIBLE; 1873 } else if (mStackId == HOME_STACK_ID) { 1874 if (task.isHomeTask()) { 1875 if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, "Home task: at " + task 1876 + " stackInvisible=" + stackInvisible 1877 + " behindFullscreenActivity=" + behindFullscreenActivity); 1878 // No other task in the home stack should be visible behind the home activity. 1879 // Home activities is usually a translucent activity with the wallpaper behind 1880 // them. However, when they don't have the wallpaper behind them, we want to 1881 // show activities in the next application stack behind them vs. another 1882 // task in the home stack like recents. 1883 behindFullscreenActivity = true; 1884 } else if (task.isRecentsTask() 1885 && task.getTaskToReturnTo() == APPLICATION_ACTIVITY_TYPE) { 1886 if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, 1887 "Recents task returning to app: at " + task 1888 + " stackInvisible=" + stackInvisible 1889 + " behindFullscreenActivity=" + behindFullscreenActivity); 1890 // We don't want any other tasks in the home stack visible if the recents 1891 // activity is going to be returning to an application activity type. 1892 // We do this to preserve the visible order the user used to get into the 1893 // recents activity. The recents activity is normally translucent and if it 1894 // doesn't have the wallpaper behind it the next activity in the home stack 1895 // shouldn't be visible when the home stack is brought to the front to display 1896 // the recents activity from an app. 1897 behindFullscreenActivity = true; 1898 } 1899 1900 } 1901 } 1902 1903 if (mTranslucentActivityWaiting != null && 1904 mUndrawnActivitiesBelowTopTranslucent.isEmpty()) { 1905 // Nothing is getting drawn or everything was already visible, don't wait for timeout. 1906 notifyActivityDrawnLocked(null); 1907 } 1908 } finally { 1909 mStackSupervisor.mKeyguardController.endActivityVisibilityUpdate(); 1910 } 1911 } 1912 1913 void addStartingWindowsForVisibleActivities(boolean taskSwitch) { 1914 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1915 mTaskHistory.get(taskNdx).addStartingWindowsForVisibleActivities(taskSwitch); 1916 } 1917 } 1918 1919 /** 1920 * @return true if the top visible activity wants to occlude the Keyguard, false otherwise 1921 */ 1922 boolean topActivityOccludesKeyguard() { 1923 return mTopActivityOccludesKeyguard; 1924 } 1925 1926 /** 1927 * @return the top most visible activity that wants to dismiss Keyguard 1928 */ 1929 ActivityRecord getTopDismissingKeyguardActivity() { 1930 return mTopDismissingKeyguardActivity; 1931 } 1932 1933 /** 1934 * Checks whether {@param r} should be visible depending on Keyguard state and updates 1935 * {@link #mTopActivityOccludesKeyguard} and {@link #mTopDismissingKeyguardActivity} if 1936 * necessary. 1937 * 1938 * @return true if {@param r} is visible taken Keyguard state into account, false otherwise 1939 */ 1940 boolean checkKeyguardVisibility(ActivityRecord r, boolean shouldBeVisible, 1941 boolean isTop) { 1942 final boolean isInPinnedStack = r.getStack().getStackId() == PINNED_STACK_ID; 1943 final boolean keyguardShowing = mStackSupervisor.mKeyguardController.isKeyguardShowing(); 1944 final boolean keyguardLocked = mStackSupervisor.mKeyguardController.isKeyguardLocked(); 1945 final boolean showWhenLocked = r.hasShowWhenLockedWindows() && !isInPinnedStack; 1946 final boolean dismissKeyguard = r.hasDismissKeyguardWindows(); 1947 if (shouldBeVisible) { 1948 if (dismissKeyguard && mTopDismissingKeyguardActivity == null) { 1949 mTopDismissingKeyguardActivity = r; 1950 } 1951 1952 // Only the top activity may control occluded, as we can't occlude the Keyguard if the 1953 // top app doesn't want to occlude it. 1954 if (isTop) { 1955 mTopActivityOccludesKeyguard |= showWhenLocked; 1956 } 1957 1958 final boolean canShowWithKeyguard = canShowWithInsecureKeyguard() 1959 && mStackSupervisor.mKeyguardController.canDismissKeyguard(); 1960 if (canShowWithKeyguard) { 1961 return true; 1962 } 1963 } 1964 if (keyguardShowing) { 1965 1966 // If keyguard is showing, nothing is visible, except if we are able to dismiss Keyguard 1967 // right away. 1968 return shouldBeVisible && mStackSupervisor.mKeyguardController 1969 .canShowActivityWhileKeyguardShowing(r, dismissKeyguard); 1970 } else if (keyguardLocked) { 1971 return shouldBeVisible && mStackSupervisor.mKeyguardController.canShowWhileOccluded( 1972 dismissKeyguard, showWhenLocked); 1973 } else { 1974 return shouldBeVisible; 1975 } 1976 } 1977 1978 /** 1979 * Check if the display to which this stack is attached has 1980 * {@link Display#FLAG_CAN_SHOW_WITH_INSECURE_KEYGUARD} applied. 1981 */ 1982 private boolean canShowWithInsecureKeyguard() { 1983 final ActivityStackSupervisor.ActivityDisplay activityDisplay 1984 = mActivityContainer.mActivityDisplay; 1985 if (activityDisplay == null) { 1986 throw new IllegalStateException("Stack is not attached to any display, stackId=" 1987 + mStackId); 1988 } 1989 1990 final int flags = activityDisplay.mDisplay.getFlags(); 1991 return (flags & FLAG_CAN_SHOW_WITH_INSECURE_KEYGUARD) != 0; 1992 } 1993 1994 private void checkTranslucentActivityWaiting(ActivityRecord top) { 1995 if (mTranslucentActivityWaiting != top) { 1996 mUndrawnActivitiesBelowTopTranslucent.clear(); 1997 if (mTranslucentActivityWaiting != null) { 1998 // Call the callback with a timeout indication. 1999 notifyActivityDrawnLocked(null); 2000 mTranslucentActivityWaiting = null; 2001 } 2002 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 2003 } 2004 } 2005 2006 private boolean makeVisibleAndRestartIfNeeded(ActivityRecord starting, int configChanges, 2007 boolean isTop, boolean andResume, ActivityRecord r) { 2008 // We need to make sure the app is running if it's the top, or it is just made visible from 2009 // invisible. If the app is already visible, it must have died while it was visible. In this 2010 // case, we'll show the dead window but will not restart the app. Otherwise we could end up 2011 // thrashing. 2012 if (isTop || !r.visible) { 2013 // This activity needs to be visible, but isn't even running... 2014 // get it started and resume if no other stack in this stack is resumed. 2015 if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, "Start and freeze screen for " + r); 2016 if (r != starting) { 2017 r.startFreezingScreenLocked(r.app, configChanges); 2018 } 2019 if (!r.visible || r.mLaunchTaskBehind) { 2020 if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, "Starting and making visible: " + r); 2021 r.setVisible(true); 2022 } 2023 if (r != starting) { 2024 mStackSupervisor.startSpecificActivityLocked(r, andResume, false); 2025 return true; 2026 } 2027 } 2028 return false; 2029 } 2030 2031 private void makeInvisible(ActivityRecord r, ActivityRecord visibleBehind) { 2032 if (!r.visible) { 2033 if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, "Already invisible: " + r); 2034 return; 2035 } 2036 // Now for any activities that aren't visible to the user, make sure they no longer are 2037 // keeping the screen frozen. 2038 if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, "Making invisible: " + r + " " + r.state); 2039 try { 2040 final boolean canEnterPictureInPicture = r.checkEnterPictureInPictureState( 2041 "makeInvisible", true /* noThrow */, true /* beforeStopping */); 2042 // Defer telling the client it is hidden if it can enter Pip and isn't current stopped 2043 // or stopping. This gives it a chance to enter Pip in onPause(). 2044 final boolean deferHidingClient = canEnterPictureInPicture 2045 && r.state != STOPPING && r.state != STOPPED; 2046 r.setDeferHidingClient(deferHidingClient); 2047 r.setVisible(false); 2048 2049 switch (r.state) { 2050 case STOPPING: 2051 case STOPPED: 2052 if (r.app != null && r.app.thread != null) { 2053 if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, 2054 "Scheduling invisibility: " + r); 2055 r.app.thread.scheduleWindowVisibility(r.appToken, false); 2056 } 2057 2058 // Reset the flag indicating that an app can enter picture-in-picture once the 2059 // activity is hidden 2060 r.supportsPictureInPictureWhilePausing = false; 2061 break; 2062 2063 case INITIALIZING: 2064 case RESUMED: 2065 case PAUSING: 2066 case PAUSED: 2067 // This case created for transitioning activities from 2068 // translucent to opaque {@link Activity#convertToOpaque}. 2069 if (visibleBehind == r) { 2070 releaseBackgroundResources(r); 2071 } else { 2072 addToStopping(r, true /* scheduleIdle */, 2073 canEnterPictureInPicture /* idleDelayed */); 2074 } 2075 break; 2076 2077 default: 2078 break; 2079 } 2080 } catch (Exception e) { 2081 // Just skip on any failure; we'll make it visible when it next restarts. 2082 Slog.w(TAG, "Exception thrown making hidden: " + r.intent.getComponent(), e); 2083 } 2084 } 2085 2086 private boolean updateBehindFullscreen(boolean stackInvisible, boolean behindFullscreenActivity, 2087 TaskRecord task, ActivityRecord r) { 2088 if (r.fullscreen) { 2089 if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, "Fullscreen: at " + r 2090 + " stackInvisible=" + stackInvisible 2091 + " behindFullscreenActivity=" + behindFullscreenActivity); 2092 // At this point, nothing else needs to be shown in this task. 2093 behindFullscreenActivity = true; 2094 } else if (!isHomeOrRecentsStack() && r.frontOfTask && task.isOverHomeStack()) { 2095 if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, "Showing home: at " + r 2096 + " stackInvisible=" + stackInvisible 2097 + " behindFullscreenActivity=" + behindFullscreenActivity); 2098 behindFullscreenActivity = true; 2099 } 2100 return behindFullscreenActivity; 2101 } 2102 2103 void convertActivityToTranslucent(ActivityRecord r) { 2104 mTranslucentActivityWaiting = r; 2105 mUndrawnActivitiesBelowTopTranslucent.clear(); 2106 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 2107 } 2108 2109 void clearOtherAppTimeTrackers(AppTimeTracker except) { 2110 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2111 final TaskRecord task = mTaskHistory.get(taskNdx); 2112 final ArrayList<ActivityRecord> activities = task.mActivities; 2113 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2114 final ActivityRecord r = activities.get(activityNdx); 2115 if ( r.appTimeTracker != except) { 2116 r.appTimeTracker = null; 2117 } 2118 } 2119 } 2120 } 2121 2122 /** 2123 * Called as activities below the top translucent activity are redrawn. When the last one is 2124 * redrawn notify the top activity by calling 2125 * {@link Activity#onTranslucentConversionComplete}. 2126 * 2127 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 2128 * occurred and the activity will be notified immediately. 2129 */ 2130 void notifyActivityDrawnLocked(ActivityRecord r) { 2131 mActivityContainer.setDrawn(); 2132 if ((r == null) 2133 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 2134 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 2135 // The last undrawn activity below the top has just been drawn. If there is an 2136 // opaque activity at the top, notify it that it can become translucent safely now. 2137 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 2138 mTranslucentActivityWaiting = null; 2139 mUndrawnActivitiesBelowTopTranslucent.clear(); 2140 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 2141 2142 if (waitingActivity != null) { 2143 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 2144 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 2145 try { 2146 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 2147 waitingActivity.appToken, r != null); 2148 } catch (RemoteException e) { 2149 } 2150 } 2151 } 2152 } 2153 } 2154 2155 /** If any activities below the top running one are in the INITIALIZING state and they have a 2156 * starting window displayed then remove that starting window. It is possible that the activity 2157 * in this state will never resumed in which case that starting window will be orphaned. */ 2158 void cancelInitializingActivities() { 2159 final ActivityRecord topActivity = topRunningActivityLocked(); 2160 boolean aboveTop = true; 2161 // We don't want to clear starting window for activities that aren't behind fullscreen 2162 // activities as we need to display their starting window until they are done initializing. 2163 boolean behindFullscreenActivity = false; 2164 2165 if (shouldBeVisible(null) == STACK_INVISIBLE) { 2166 // The stack is not visible, so no activity in it should be displaying a starting 2167 // window. Mark all activities below top and behind fullscreen. 2168 aboveTop = false; 2169 behindFullscreenActivity = true; 2170 } 2171 2172 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2173 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2174 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2175 final ActivityRecord r = activities.get(activityNdx); 2176 if (aboveTop) { 2177 if (r == topActivity) { 2178 aboveTop = false; 2179 } 2180 behindFullscreenActivity |= r.fullscreen; 2181 continue; 2182 } 2183 2184 r.removeOrphanedStartingWindow(behindFullscreenActivity); 2185 behindFullscreenActivity |= r.fullscreen; 2186 } 2187 } 2188 } 2189 2190 /** 2191 * Ensure that the top activity in the stack is resumed. 2192 * 2193 * @param prev The previously resumed activity, for when in the process 2194 * of pausing; can be null to call from elsewhere. 2195 * @param options Activity options. 2196 * 2197 * @return Returns true if something is being resumed, or false if 2198 * nothing happened. 2199 * 2200 * NOTE: It is not safe to call this method directly as it can cause an activity in a 2201 * non-focused stack to be resumed. 2202 * Use {@link ActivityStackSupervisor#resumeFocusedStackTopActivityLocked} to resume the 2203 * right activity for the current system state. 2204 */ 2205 boolean resumeTopActivityUncheckedLocked(ActivityRecord prev, ActivityOptions options) { 2206 if (mStackSupervisor.inResumeTopActivity) { 2207 // Don't even start recursing. 2208 return false; 2209 } 2210 2211 boolean result = false; 2212 try { 2213 // Protect against recursion. 2214 mStackSupervisor.inResumeTopActivity = true; 2215 result = resumeTopActivityInnerLocked(prev, options); 2216 } finally { 2217 mStackSupervisor.inResumeTopActivity = false; 2218 } 2219 // When resuming the top activity, it may be necessary to pause the top activity (for 2220 // example, returning to the lock screen. We suppress the normal pause logic in 2221 // {@link #resumeTopActivityUncheckedLocked}, since the top activity is resumed at the end. 2222 // We call the {@link ActivityStackSupervisor#checkReadyForSleepLocked} again here to ensure 2223 // any necessary pause logic occurs. 2224 mStackSupervisor.checkReadyForSleepLocked(); 2225 2226 return result; 2227 } 2228 2229 void setResumedActivityLocked(ActivityRecord r, String reason) { 2230 // TODO: move mResumedActivity to stack supervisor, 2231 // there should only be 1 global copy of resumed activity. 2232 mResumedActivity = r; 2233 r.state = ActivityState.RESUMED; 2234 mService.setResumedActivityUncheckLocked(r, reason); 2235 final TaskRecord task = r.getTask(); 2236 task.touchActiveTime(); 2237 mRecentTasks.addLocked(task); 2238 } 2239 2240 private boolean resumeTopActivityInnerLocked(ActivityRecord prev, ActivityOptions options) { 2241 if (!mService.mBooting && !mService.mBooted) { 2242 // Not ready yet! 2243 return false; 2244 } 2245 2246 // Find the next top-most activity to resume in this stack that is not finishing and is 2247 // focusable. If it is not focusable, we will fall into the case below to resume the 2248 // top activity in the next focusable task. 2249 final ActivityRecord next = topRunningActivityLocked(true /* focusableOnly */); 2250 2251 final boolean hasRunningActivity = next != null; 2252 2253 final ActivityRecord parent = mActivityContainer.mParentActivity; 2254 final boolean isParentNotResumed = parent != null && parent.state != ActivityState.RESUMED; 2255 if (hasRunningActivity 2256 && (isParentNotResumed || !mActivityContainer.isAttachedLocked())) { 2257 // Do not resume this stack if its parent is not resumed. 2258 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 2259 return false; 2260 } 2261 2262 mStackSupervisor.cancelInitializingActivities(); 2263 2264 // Remember how we'll process this pause/resume situation, and ensure 2265 // that the state is reset however we wind up proceeding. 2266 final boolean userLeaving = mStackSupervisor.mUserLeaving; 2267 mStackSupervisor.mUserLeaving = false; 2268 2269 if (!hasRunningActivity) { 2270 // There are no activities left in the stack, let's look somewhere else. 2271 return resumeTopActivityInNextFocusableStack(prev, options, "noMoreActivities"); 2272 } 2273 2274 next.delayedResume = false; 2275 2276 // If the top activity is the resumed one, nothing to do. 2277 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 2278 mStackSupervisor.allResumedActivitiesComplete()) { 2279 // Make sure we have executed any pending transitions, since there 2280 // should be nothing left to do at this point. 2281 executeAppTransition(options); 2282 if (DEBUG_STATES) Slog.d(TAG_STATES, 2283 "resumeTopActivityLocked: Top activity resumed " + next); 2284 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 2285 return false; 2286 } 2287 2288 final TaskRecord nextTask = next.getTask(); 2289 final TaskRecord prevTask = prev != null ? prev.getTask() : null; 2290 if (prevTask != null && prevTask.getStack() == this && 2291 prevTask.isOverHomeStack() && prev.finishing && prev.frontOfTask) { 2292 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 2293 if (prevTask == nextTask) { 2294 prevTask.setFrontOfTask(); 2295 } else if (prevTask != topTask()) { 2296 // This task is going away but it was supposed to return to the home stack. 2297 // Now the task above it has to return to the home task instead. 2298 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 2299 mTaskHistory.get(taskNdx).setTaskToReturnTo(HOME_ACTIVITY_TYPE); 2300 } else if (!isOnHomeDisplay()) { 2301 return false; 2302 } else if (!isHomeStack()){ 2303 if (DEBUG_STATES) Slog.d(TAG_STATES, 2304 "resumeTopActivityLocked: Launching home next"); 2305 return isOnHomeDisplay() && 2306 mStackSupervisor.resumeHomeStackTask(prev, "prevFinished"); 2307 } 2308 } 2309 2310 // If we are sleeping, and there is no resumed activity, and the top 2311 // activity is paused, well that is the state we want. 2312 if (mService.isSleepingOrShuttingDownLocked() 2313 && mLastPausedActivity == next 2314 && mStackSupervisor.allPausedActivitiesComplete()) { 2315 // Make sure we have executed any pending transitions, since there 2316 // should be nothing left to do at this point. 2317 executeAppTransition(options); 2318 if (DEBUG_STATES) Slog.d(TAG_STATES, 2319 "resumeTopActivityLocked: Going to sleep and all paused"); 2320 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 2321 return false; 2322 } 2323 2324 // Make sure that the user who owns this activity is started. If not, 2325 // we will just leave it as is because someone should be bringing 2326 // another user's activities to the top of the stack. 2327 if (!mService.mUserController.hasStartedUserState(next.userId)) { 2328 Slog.w(TAG, "Skipping resume of top activity " + next 2329 + ": user " + next.userId + " is stopped"); 2330 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 2331 return false; 2332 } 2333 2334 // The activity may be waiting for stop, but that is no longer 2335 // appropriate for it. 2336 mStackSupervisor.mStoppingActivities.remove(next); 2337 mStackSupervisor.mGoingToSleepActivities.remove(next); 2338 next.sleeping = false; 2339 mStackSupervisor.mActivitiesWaitingForVisibleActivity.remove(next); 2340 2341 if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, "Resuming " + next); 2342 2343 // If we are currently pausing an activity, then don't do anything until that is done. 2344 if (!mStackSupervisor.allPausedActivitiesComplete()) { 2345 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG_PAUSE, 2346 "resumeTopActivityLocked: Skip resume: some activity pausing."); 2347 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 2348 return false; 2349 } 2350 2351 mStackSupervisor.setLaunchSource(next.info.applicationInfo.uid); 2352 2353 boolean lastResumedCanPip = false; 2354 final ActivityStack lastFocusedStack = mStackSupervisor.getLastStack(); 2355 if (lastFocusedStack != null && lastFocusedStack != this) { 2356 // So, why aren't we using prev here??? See the param comment on the method. prev doesn't 2357 // represent the last resumed activity. However, the last focus stack does if it isn't null. 2358 final ActivityRecord lastResumed = lastFocusedStack.mResumedActivity; 2359 lastResumedCanPip = lastResumed != null && lastResumed.checkEnterPictureInPictureState( 2360 "resumeTopActivity", true /* noThrow */, userLeaving /* beforeStopping */); 2361 } 2362 // If the flag RESUME_WHILE_PAUSING is set, then continue to schedule the previous activity 2363 // to be paused, while at the same time resuming the new resume activity only if the 2364 // previous activity can't go into Pip since we want to give Pip activities a chance to 2365 // enter Pip before resuming the next activity. 2366 final boolean resumeWhilePausing = (next.info.flags & FLAG_RESUME_WHILE_PAUSING) != 0 2367 && !lastResumedCanPip; 2368 2369 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving, next, false); 2370 if (mResumedActivity != null) { 2371 if (DEBUG_STATES) Slog.d(TAG_STATES, 2372 "resumeTopActivityLocked: Pausing " + mResumedActivity); 2373 pausing |= startPausingLocked(userLeaving, false, next, false); 2374 } 2375 if (pausing && !resumeWhilePausing) { 2376 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG_STATES, 2377 "resumeTopActivityLocked: Skip resume: need to start pausing"); 2378 // At this point we want to put the upcoming activity's process 2379 // at the top of the LRU list, since we know we will be needing it 2380 // very soon and it would be a waste to let it get killed if it 2381 // happens to be sitting towards the end. 2382 if (next.app != null && next.app.thread != null) { 2383 mService.updateLruProcessLocked(next.app, true, null); 2384 } 2385 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 2386 return true; 2387 } else if (mResumedActivity == next && next.state == ActivityState.RESUMED && 2388 mStackSupervisor.allResumedActivitiesComplete()) { 2389 // It is possible for the activity to be resumed when we paused back stacks above if the 2390 // next activity doesn't have to wait for pause to complete. 2391 // So, nothing else to-do except: 2392 // Make sure we have executed any pending transitions, since there 2393 // should be nothing left to do at this point. 2394 executeAppTransition(options); 2395 if (DEBUG_STATES) Slog.d(TAG_STATES, 2396 "resumeTopActivityLocked: Top activity resumed (dontWaitForPause) " + next); 2397 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 2398 return true; 2399 } 2400 2401 // If the most recent activity was noHistory but was only stopped rather 2402 // than stopped+finished because the device went to sleep, we need to make 2403 // sure to finish it as we're making a new activity topmost. 2404 if (mService.isSleepingLocked() && mLastNoHistoryActivity != null && 2405 !mLastNoHistoryActivity.finishing) { 2406 if (DEBUG_STATES) Slog.d(TAG_STATES, 2407 "no-history finish of " + mLastNoHistoryActivity + " on new resume"); 2408 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 2409 null, "resume-no-history", false); 2410 mLastNoHistoryActivity = null; 2411 } 2412 2413 if (prev != null && prev != next) { 2414 if (!mStackSupervisor.mActivitiesWaitingForVisibleActivity.contains(prev) 2415 && next != null && !next.nowVisible) { 2416 mStackSupervisor.mActivitiesWaitingForVisibleActivity.add(prev); 2417 if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, 2418 "Resuming top, waiting visible to hide: " + prev); 2419 } else { 2420 // The next activity is already visible, so hide the previous 2421 // activity's windows right now so we can show the new one ASAP. 2422 // We only do this if the previous is finishing, which should mean 2423 // it is on top of the one being resumed so hiding it quickly 2424 // is good. Otherwise, we want to do the normal route of allowing 2425 // the resumed activity to be shown so we can decide if the 2426 // previous should actually be hidden depending on whether the 2427 // new one is found to be full-screen or not. 2428 if (prev.finishing) { 2429 prev.setVisibility(false); 2430 if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, 2431 "Not waiting for visible to hide: " + prev + ", waitingVisible=" 2432 + mStackSupervisor.mActivitiesWaitingForVisibleActivity.contains(prev) 2433 + ", nowVisible=" + next.nowVisible); 2434 } else { 2435 if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, 2436 "Previous already visible but still waiting to hide: " + prev 2437 + ", waitingVisible=" 2438 + mStackSupervisor.mActivitiesWaitingForVisibleActivity.contains(prev) 2439 + ", nowVisible=" + next.nowVisible); 2440 } 2441 } 2442 } 2443 2444 // Launching this app's activity, make sure the app is no longer 2445 // considered stopped. 2446 try { 2447 AppGlobals.getPackageManager().setPackageStoppedState( 2448 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 2449 } catch (RemoteException e1) { 2450 } catch (IllegalArgumentException e) { 2451 Slog.w(TAG, "Failed trying to unstop package " 2452 + next.packageName + ": " + e); 2453 } 2454 2455 // We are starting up the next activity, so tell the window manager 2456 // that the previous one will be hidden soon. This way it can know 2457 // to ignore it when computing the desired screen orientation. 2458 boolean anim = true; 2459 if (prev != null) { 2460 if (prev.finishing) { 2461 if (DEBUG_TRANSITION) Slog.v(TAG_TRANSITION, 2462 "Prepare close transition: prev=" + prev); 2463 if (mNoAnimActivities.contains(prev)) { 2464 anim = false; 2465 mWindowManager.prepareAppTransition(TRANSIT_NONE, false); 2466 } else { 2467 mWindowManager.prepareAppTransition(prev.getTask() == next.getTask() 2468 ? TRANSIT_ACTIVITY_CLOSE 2469 : TRANSIT_TASK_CLOSE, false); 2470 } 2471 prev.setVisibility(false); 2472 } else { 2473 if (DEBUG_TRANSITION) Slog.v(TAG_TRANSITION, 2474 "Prepare open transition: prev=" + prev); 2475 if (mNoAnimActivities.contains(next)) { 2476 anim = false; 2477 mWindowManager.prepareAppTransition(TRANSIT_NONE, false); 2478 } else { 2479 mWindowManager.prepareAppTransition(prev.getTask() == next.getTask() 2480 ? TRANSIT_ACTIVITY_OPEN 2481 : next.mLaunchTaskBehind 2482 ? TRANSIT_TASK_OPEN_BEHIND 2483 : TRANSIT_TASK_OPEN, false); 2484 } 2485 } 2486 } else { 2487 if (DEBUG_TRANSITION) Slog.v(TAG_TRANSITION, "Prepare open transition: no previous"); 2488 if (mNoAnimActivities.contains(next)) { 2489 anim = false; 2490 mWindowManager.prepareAppTransition(TRANSIT_NONE, false); 2491 } else { 2492 mWindowManager.prepareAppTransition(TRANSIT_ACTIVITY_OPEN, false); 2493 } 2494 } 2495 2496 Bundle resumeAnimOptions = null; 2497 if (anim) { 2498 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 2499 if (opts != null) { 2500 resumeAnimOptions = opts.toBundle(); 2501 } 2502 next.applyOptionsLocked(); 2503 } else { 2504 next.clearOptionsLocked(); 2505 } 2506 2507 ActivityStack lastStack = mStackSupervisor.getLastStack(); 2508 if (next.app != null && next.app.thread != null) { 2509 if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, "Resume running: " + next 2510 + " stopped=" + next.stopped + " visible=" + next.visible); 2511 2512 // If the previous activity is translucent, force a visibility update of 2513 // the next activity, so that it's added to WM's opening app list, and 2514 // transition animation can be set up properly. 2515 // For example, pressing Home button with a translucent activity in focus. 2516 // Launcher is already visible in this case. If we don't add it to opening 2517 // apps, maybeUpdateTransitToWallpaper() will fail to identify this as a 2518 // TRANSIT_WALLPAPER_OPEN animation, and run some funny animation. 2519 final boolean lastActivityTranslucent = lastStack != null 2520 && (!lastStack.mFullscreen 2521 || (lastStack.mLastPausedActivity != null 2522 && !lastStack.mLastPausedActivity.fullscreen)); 2523 2524 // This activity is now becoming visible. 2525 if (!next.visible || next.stopped || lastActivityTranslucent) { 2526 next.setVisibility(true); 2527 } 2528 2529 // schedule launch ticks to collect information about slow apps. 2530 next.startLaunchTickingLocked(); 2531 2532 ActivityRecord lastResumedActivity = 2533 lastStack == null ? null :lastStack.mResumedActivity; 2534 ActivityState lastState = next.state; 2535 2536 mService.updateCpuStats(); 2537 2538 if (DEBUG_STATES) Slog.v(TAG_STATES, "Moving to RESUMED: " + next + " (in existing)"); 2539 2540 setResumedActivityLocked(next, "resumeTopActivityInnerLocked"); 2541 2542 mService.updateLruProcessLocked(next.app, true, null); 2543 updateLRUListLocked(next); 2544 mService.updateOomAdjLocked(); 2545 2546 // Have the window manager re-evaluate the orientation of 2547 // the screen based on the new activity order. 2548 boolean notUpdated = true; 2549 if (mStackSupervisor.isFocusedStack(this)) { 2550 final Configuration config = mWindowManager.updateOrientationFromAppTokens( 2551 mStackSupervisor.getDisplayOverrideConfiguration(mDisplayId), 2552 next.mayFreezeScreenLocked(next.app) ? next.appToken : null, mDisplayId); 2553 if (config != null) { 2554 next.frozenBeforeDestroy = true; 2555 } 2556 notUpdated = !mService.updateDisplayOverrideConfigurationLocked(config, next, 2557 false /* deferResume */, mDisplayId); 2558 } 2559 2560 if (notUpdated) { 2561 // The configuration update wasn't able to keep the existing 2562 // instance of the activity, and instead started a new one. 2563 // We should be all done, but let's just make sure our activity 2564 // is still at the top and schedule another run if something 2565 // weird happened. 2566 ActivityRecord nextNext = topRunningActivityLocked(); 2567 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG_STATES, 2568 "Activity config changed during resume: " + next 2569 + ", new next: " + nextNext); 2570 if (nextNext != next) { 2571 // Do over! 2572 mStackSupervisor.scheduleResumeTopActivities(); 2573 } 2574 if (!next.visible || next.stopped) { 2575 next.setVisibility(true); 2576 } 2577 next.completeResumeLocked(); 2578 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 2579 return true; 2580 } 2581 2582 try { 2583 // Deliver all pending results. 2584 ArrayList<ResultInfo> a = next.results; 2585 if (a != null) { 2586 final int N = a.size(); 2587 if (!next.finishing && N > 0) { 2588 if (DEBUG_RESULTS) Slog.v(TAG_RESULTS, 2589 "Delivering results to " + next + ": " + a); 2590 next.app.thread.scheduleSendResult(next.appToken, a); 2591 } 2592 } 2593 2594 if (next.newIntents != null) { 2595 next.app.thread.scheduleNewIntent( 2596 next.newIntents, next.appToken, false /* andPause */); 2597 } 2598 2599 // Well the app will no longer be stopped. 2600 // Clear app token stopped state in window manager if needed. 2601 next.notifyAppResumed(next.stopped); 2602 2603 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, next.userId, 2604 System.identityHashCode(next), next.getTask().taskId, 2605 next.shortComponentName); 2606 2607 next.sleeping = false; 2608 mService.showUnsupportedZoomDialogIfNeededLocked(next); 2609 mService.showAskCompatModeDialogLocked(next); 2610 next.app.pendingUiClean = true; 2611 next.app.forceProcessStateUpTo(mService.mTopProcessState); 2612 next.clearOptionsLocked(); 2613 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 2614 mService.isNextTransitionForward(), resumeAnimOptions); 2615 2616 if (DEBUG_STATES) Slog.d(TAG_STATES, "resumeTopActivityLocked: Resumed " + next); 2617 } catch (Exception e) { 2618 // Whoops, need to restart this activity! 2619 if (DEBUG_STATES) Slog.v(TAG_STATES, "Resume failed; resetting state to " 2620 + lastState + ": " + next); 2621 next.state = lastState; 2622 if (lastStack != null) { 2623 lastStack.mResumedActivity = lastResumedActivity; 2624 } 2625 Slog.i(TAG, "Restarting because process died: " + next); 2626 if (!next.hasBeenLaunched) { 2627 next.hasBeenLaunched = true; 2628 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 2629 mStackSupervisor.isFrontStackOnDisplay(lastStack)) { 2630 next.showStartingWindow(null /* prev */, false /* newTask */, 2631 false /* taskSwitch */); 2632 } 2633 mStackSupervisor.startSpecificActivityLocked(next, true, false); 2634 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 2635 return true; 2636 } 2637 2638 // From this point on, if something goes wrong there is no way 2639 // to recover the activity. 2640 try { 2641 next.completeResumeLocked(); 2642 } catch (Exception e) { 2643 // If any exception gets thrown, toss away this 2644 // activity and try the next one. 2645 Slog.w(TAG, "Exception thrown during resume of " + next, e); 2646 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 2647 "resume-exception", true); 2648 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 2649 return true; 2650 } 2651 } else { 2652 // Whoops, need to restart this activity! 2653 if (!next.hasBeenLaunched) { 2654 next.hasBeenLaunched = true; 2655 } else { 2656 if (SHOW_APP_STARTING_PREVIEW) { 2657 next.showStartingWindow(null /* prev */, false /* newTask */, 2658 false /* taskSwich */); 2659 } 2660 if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, "Restarting: " + next); 2661 } 2662 if (DEBUG_STATES) Slog.d(TAG_STATES, "resumeTopActivityLocked: Restarting " + next); 2663 mStackSupervisor.startSpecificActivityLocked(next, true, true); 2664 } 2665 2666 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 2667 return true; 2668 } 2669 2670 private boolean resumeTopActivityInNextFocusableStack(ActivityRecord prev, 2671 ActivityOptions options, String reason) { 2672 if ((!mFullscreen || !isOnHomeDisplay()) && adjustFocusToNextFocusableStackLocked(reason)) { 2673 // Try to move focus to the next visible stack with a running activity if this 2674 // stack is not covering the entire screen or is on a secondary display (with no home 2675 // stack). 2676 return mStackSupervisor.resumeFocusedStackTopActivityLocked( 2677 mStackSupervisor.getFocusedStack(), prev, null); 2678 } 2679 2680 // Let's just start up the Launcher... 2681 ActivityOptions.abort(options); 2682 if (DEBUG_STATES) Slog.d(TAG_STATES, 2683 "resumeTopActivityInNextFocusableStack: " + reason + ", go home"); 2684 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 2685 // Only resume home if on home display 2686 return isOnHomeDisplay() && 2687 mStackSupervisor.resumeHomeStackTask(prev, reason); 2688 } 2689 2690 private TaskRecord getNextTask(TaskRecord targetTask) { 2691 final int index = mTaskHistory.indexOf(targetTask); 2692 if (index >= 0) { 2693 final int numTasks = mTaskHistory.size(); 2694 for (int i = index + 1; i < numTasks; ++i) { 2695 TaskRecord task = mTaskHistory.get(i); 2696 if (task.userId == targetTask.userId) { 2697 return task; 2698 } 2699 } 2700 } 2701 return null; 2702 } 2703 2704 /** Returns the position the input task should be placed in this stack. */ 2705 int getAdjustedPositionForTask(TaskRecord task, int suggestedPosition, 2706 ActivityRecord starting) { 2707 2708 int maxPosition = mTaskHistory.size(); 2709 if ((starting != null && starting.okToShowLocked()) 2710 || (starting == null && task.okToShowLocked())) { 2711 // If the task or starting activity can be shown, then whatever position is okay. 2712 return Math.min(suggestedPosition, maxPosition); 2713 } 2714 2715 // The task can't be shown, put non-current user tasks below current user tasks. 2716 while (maxPosition > 0) { 2717 final TaskRecord tmpTask = mTaskHistory.get(maxPosition - 1); 2718 if (!mStackSupervisor.isCurrentProfileLocked(tmpTask.userId) 2719 || tmpTask.topRunningActivityLocked() == null) { 2720 break; 2721 } 2722 maxPosition--; 2723 } 2724 2725 return Math.min(suggestedPosition, maxPosition); 2726 } 2727 2728 /** 2729 * Used from {@link ActivityStack#positionTask(TaskRecord, int)}. 2730 * @see ActivityManagerService#positionTaskInStack(int, int, int). 2731 */ 2732 private void insertTaskAtPosition(TaskRecord task, int position) { 2733 if (position >= mTaskHistory.size()) { 2734 insertTaskAtTop(task, null); 2735 return; 2736 } 2737 position = getAdjustedPositionForTask(task, position, null /* starting */); 2738 mTaskHistory.remove(task); 2739 mTaskHistory.add(position, task); 2740 mWindowContainerController.positionChildAt(task.getWindowContainerController(), position, 2741 task.mBounds, task.getOverrideConfiguration()); 2742 updateTaskMovement(task, true); 2743 } 2744 2745 private void insertTaskAtTop(TaskRecord task, ActivityRecord starting) { 2746 updateTaskReturnToForTopInsertion(task); 2747 // TODO: Better place to put all the code below...may be addTask... 2748 mTaskHistory.remove(task); 2749 // Now put task at top. 2750 final int position = getAdjustedPositionForTask(task, mTaskHistory.size(), starting); 2751 mTaskHistory.add(position, task); 2752 updateTaskMovement(task, true); 2753 mWindowContainerController.positionChildAtTop(task.getWindowContainerController(), 2754 true /* includingParents */); 2755 } 2756 2757 /** 2758 * Updates the {@param task}'s return type before it is moved to the top. 2759 */ 2760 private void updateTaskReturnToForTopInsertion(TaskRecord task) { 2761 boolean isLastTaskOverHome = false; 2762 // If the moving task is over the home or assistant stack, transfer its return type to next 2763 // task so that they return to the same stack 2764 if (task.isOverHomeStack() || task.isOverAssistantStack()) { 2765 final TaskRecord nextTask = getNextTask(task); 2766 if (nextTask != null) { 2767 nextTask.setTaskToReturnTo(task.getTaskToReturnTo()); 2768 } else { 2769 isLastTaskOverHome = true; 2770 } 2771 } 2772 2773 // If this is not on the default display, then just set the return type to application 2774 if (!isOnHomeDisplay()) { 2775 task.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 2776 return; 2777 } 2778 2779 final ActivityStack lastStack = mStackSupervisor.getLastStack(); 2780 2781 // If there is no last task, do not set task to return to 2782 if (lastStack == null) { 2783 return; 2784 } 2785 2786 // If the task was launched from the assistant stack, set the return type to assistant 2787 if (lastStack.isAssistantStack()) { 2788 task.setTaskToReturnTo(ASSISTANT_ACTIVITY_TYPE); 2789 return; 2790 } 2791 2792 // If this is being moved to the top by another activity or being launched from the home 2793 // activity, set mTaskToReturnTo accordingly. 2794 final boolean fromHomeOrRecents = lastStack.isHomeOrRecentsStack(); 2795 final TaskRecord topTask = lastStack.topTask(); 2796 if (!isHomeOrRecentsStack() && (fromHomeOrRecents || topTask() != task)) { 2797 // If it's a last task over home - we default to keep its return to type not to 2798 // make underlying task focused when this one will be finished. 2799 int returnToType = isLastTaskOverHome 2800 ? task.getTaskToReturnTo() : APPLICATION_ACTIVITY_TYPE; 2801 if (fromHomeOrRecents && StackId.allowTopTaskToReturnHome(mStackId)) { 2802 returnToType = topTask == null ? HOME_ACTIVITY_TYPE : topTask.taskType; 2803 } 2804 task.setTaskToReturnTo(returnToType); 2805 } 2806 } 2807 2808 final void startActivityLocked(ActivityRecord r, ActivityRecord focusedTopActivity, 2809 boolean newTask, boolean keepCurTransition, ActivityOptions options) { 2810 TaskRecord rTask = r.getTask(); 2811 final int taskId = rTask.taskId; 2812 // mLaunchTaskBehind tasks get placed at the back of the task stack. 2813 if (!r.mLaunchTaskBehind && (taskForIdLocked(taskId) == null || newTask)) { 2814 // Last activity in task had been removed or ActivityManagerService is reusing task. 2815 // Insert or replace. 2816 // Might not even be in. 2817 insertTaskAtTop(rTask, r); 2818 } 2819 TaskRecord task = null; 2820 if (!newTask) { 2821 // If starting in an existing task, find where that is... 2822 boolean startIt = true; 2823 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2824 task = mTaskHistory.get(taskNdx); 2825 if (task.getTopActivity() == null) { 2826 // All activities in task are finishing. 2827 continue; 2828 } 2829 if (task == rTask) { 2830 // Here it is! Now, if this is not yet visible to the 2831 // user, then just add it without starting; it will 2832 // get started when the user navigates back to it. 2833 if (!startIt) { 2834 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 2835 + task, new RuntimeException("here").fillInStackTrace()); 2836 r.createWindowContainer(); 2837 ActivityOptions.abort(options); 2838 return; 2839 } 2840 break; 2841 } else if (task.numFullscreen > 0) { 2842 startIt = false; 2843 } 2844 } 2845 } 2846 2847 // Place a new activity at top of stack, so it is next to interact with the user. 2848 2849 // If we are not placing the new activity frontmost, we do not want to deliver the 2850 // onUserLeaving callback to the actual frontmost activity 2851 final TaskRecord activityTask = r.getTask(); 2852 if (task == activityTask && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 2853 mStackSupervisor.mUserLeaving = false; 2854 if (DEBUG_USER_LEAVING) Slog.v(TAG_USER_LEAVING, 2855 "startActivity() behind front, mUserLeaving=false"); 2856 } 2857 2858 task = activityTask; 2859 2860 // Slot the activity into the history stack and proceed 2861 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 2862 new RuntimeException("here").fillInStackTrace()); 2863 // TODO: Need to investigate if it is okay for the controller to already be created by the 2864 // time we get to this point. I think it is, but need to double check. 2865 // Use test in b/34179495 to trace the call path. 2866 if (r.getWindowContainerController() == null) { 2867 r.createWindowContainer(); 2868 } 2869 task.setFrontOfTask(); 2870 2871 if (!isHomeOrRecentsStack() || numActivities() > 0) { 2872 if (DEBUG_TRANSITION) Slog.v(TAG_TRANSITION, 2873 "Prepare open transition: starting " + r); 2874 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 2875 mWindowManager.prepareAppTransition(TRANSIT_NONE, keepCurTransition); 2876 mNoAnimActivities.add(r); 2877 } else { 2878 int transit = TRANSIT_ACTIVITY_OPEN; 2879 if (newTask) { 2880 if (r.mLaunchTaskBehind) { 2881 transit = TRANSIT_TASK_OPEN_BEHIND; 2882 } else { 2883 // If a new task is being launched, then mark the existing top activity as 2884 // supporting picture-in-picture while pausing 2885 if (focusedTopActivity != null && 2886 focusedTopActivity.getStack().getStackId() != PINNED_STACK_ID) { 2887 focusedTopActivity.supportsPictureInPictureWhilePausing = true; 2888 } 2889 transit = TRANSIT_TASK_OPEN; 2890 } 2891 } 2892 mWindowManager.prepareAppTransition(transit, keepCurTransition); 2893 mNoAnimActivities.remove(r); 2894 } 2895 boolean doShow = true; 2896 if (newTask) { 2897 // Even though this activity is starting fresh, we still need 2898 // to reset it to make sure we apply affinities to move any 2899 // existing activities from other tasks in to it. 2900 // If the caller has requested that the target task be 2901 // reset, then do so. 2902 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 2903 resetTaskIfNeededLocked(r, r); 2904 doShow = topRunningNonDelayedActivityLocked(null) == r; 2905 } 2906 } else if (options != null && options.getAnimationType() 2907 == ActivityOptions.ANIM_SCENE_TRANSITION) { 2908 doShow = false; 2909 } 2910 if (r.mLaunchTaskBehind) { 2911 // Don't do a starting window for mLaunchTaskBehind. More importantly make sure we 2912 // tell WindowManager that r is visible even though it is at the back of the stack. 2913 r.setVisibility(true); 2914 ensureActivitiesVisibleLocked(null, 0, !PRESERVE_WINDOWS); 2915 } else if (SHOW_APP_STARTING_PREVIEW && doShow) { 2916 // Figure out if we are transitioning from another activity that is 2917 // "has the same starting icon" as the next one. This allows the 2918 // window manager to keep the previous window it had previously 2919 // created, if it still had one. 2920 TaskRecord prevTask = r.getTask(); 2921 ActivityRecord prev = prevTask.topRunningActivityWithStartingWindowLocked(); 2922 if (prev != null) { 2923 // We don't want to reuse the previous starting preview if: 2924 // (1) The current activity is in a different task. 2925 if (prev.getTask() != prevTask) { 2926 prev = null; 2927 } 2928 // (2) The current activity is already displayed. 2929 else if (prev.nowVisible) { 2930 prev = null; 2931 } 2932 } 2933 r.showStartingWindow(prev, newTask, isTaskSwitch(r, focusedTopActivity)); 2934 } 2935 } else { 2936 // If this is the first activity, don't do any fancy animations, 2937 // because there is nothing for it to animate on top of. 2938 ActivityOptions.abort(options); 2939 } 2940 } 2941 2942 private boolean isTaskSwitch(ActivityRecord r, 2943 ActivityRecord topFocusedActivity) { 2944 return topFocusedActivity != null && r.getTask() != topFocusedActivity.getTask(); 2945 } 2946 2947 /** 2948 * Perform a reset of the given task, if needed as part of launching it. 2949 * Returns the new HistoryRecord at the top of the task. 2950 */ 2951 /** 2952 * Helper method for #resetTaskIfNeededLocked. 2953 * We are inside of the task being reset... we'll either finish this activity, push it out 2954 * for another task, or leave it as-is. 2955 * @param task The task containing the Activity (taskTop) that might be reset. 2956 * @param forceReset 2957 * @return An ActivityOptions that needs to be processed. 2958 */ 2959 private ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 2960 ActivityOptions topOptions = null; 2961 2962 int replyChainEnd = -1; 2963 boolean canMoveOptions = true; 2964 2965 // We only do this for activities that are not the root of the task (since if we finish 2966 // the root, we may no longer have the task!). 2967 final ArrayList<ActivityRecord> activities = task.mActivities; 2968 final int numActivities = activities.size(); 2969 final int rootActivityNdx = task.findEffectiveRootIndex(); 2970 for (int i = numActivities - 1; i > rootActivityNdx; --i ) { 2971 ActivityRecord target = activities.get(i); 2972 if (target.frontOfTask) 2973 break; 2974 2975 final int flags = target.info.flags; 2976 final boolean finishOnTaskLaunch = 2977 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2978 final boolean allowTaskReparenting = 2979 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2980 final boolean clearWhenTaskReset = 2981 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2982 2983 if (!finishOnTaskLaunch 2984 && !clearWhenTaskReset 2985 && target.resultTo != null) { 2986 // If this activity is sending a reply to a previous 2987 // activity, we can't do anything with it now until 2988 // we reach the start of the reply chain. 2989 // XXX note that we are assuming the result is always 2990 // to the previous activity, which is almost always 2991 // the case but we really shouldn't count on. 2992 if (replyChainEnd < 0) { 2993 replyChainEnd = i; 2994 } 2995 } else if (!finishOnTaskLaunch 2996 && !clearWhenTaskReset 2997 && allowTaskReparenting 2998 && target.taskAffinity != null 2999 && !target.taskAffinity.equals(task.affinity)) { 3000 // If this activity has an affinity for another 3001 // task, then we need to move it out of here. We will 3002 // move it as far out of the way as possible, to the 3003 // bottom of the activity stack. This also keeps it 3004 // correctly ordered with any activities we previously 3005 // moved. 3006 final TaskRecord targetTask; 3007 final ActivityRecord bottom = 3008 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 3009 mTaskHistory.get(0).mActivities.get(0) : null; 3010 if (bottom != null && target.taskAffinity != null 3011 && target.taskAffinity.equals(bottom.getTask().affinity)) { 3012 // If the activity currently at the bottom has the 3013 // same task affinity as the one we are moving, 3014 // then merge it into the same task. 3015 targetTask = bottom.getTask(); 3016 if (DEBUG_TASKS) Slog.v(TAG_TASKS, "Start pushing activity " + target 3017 + " out to bottom task " + targetTask); 3018 } else { 3019 targetTask = createTaskRecord( 3020 mStackSupervisor.getNextTaskIdForUserLocked(target.userId), 3021 target.info, null, null, null, false, target.mActivityType); 3022 targetTask.affinityIntent = target.intent; 3023 if (DEBUG_TASKS) Slog.v(TAG_TASKS, "Start pushing activity " + target 3024 + " out to new task " + targetTask); 3025 } 3026 3027 boolean noOptions = canMoveOptions; 3028 final int start = replyChainEnd < 0 ? i : replyChainEnd; 3029 for (int srcPos = start; srcPos >= i; --srcPos) { 3030 final ActivityRecord p = activities.get(srcPos); 3031 if (p.finishing) { 3032 continue; 3033 } 3034 3035 canMoveOptions = false; 3036 if (noOptions && topOptions == null) { 3037 topOptions = p.takeOptionsLocked(); 3038 if (topOptions != null) { 3039 noOptions = false; 3040 } 3041 } 3042 if (DEBUG_ADD_REMOVE) Slog.i(TAG_ADD_REMOVE, 3043 "Removing activity " + p + " from task=" + task + " adding to task=" 3044 + targetTask + " Callers=" + Debug.getCallers(4)); 3045 if (DEBUG_TASKS) Slog.v(TAG_TASKS, 3046 "Pushing next activity " + p + " out to target's task " + target); 3047 p.reparent(targetTask, 0 /* position - bottom */, "resetTargetTaskIfNeeded"); 3048 } 3049 3050 mWindowContainerController.positionChildAtBottom( 3051 targetTask.getWindowContainerController()); 3052 replyChainEnd = -1; 3053 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 3054 // If the activity should just be removed -- either 3055 // because it asks for it, or the task should be 3056 // cleared -- then finish it and anything that is 3057 // part of its reply chain. 3058 int end; 3059 if (clearWhenTaskReset) { 3060 // In this case, we want to finish this activity 3061 // and everything above it, so be sneaky and pretend 3062 // like these are all in the reply chain. 3063 end = activities.size() - 1; 3064 } else if (replyChainEnd < 0) { 3065 end = i; 3066 } else { 3067 end = replyChainEnd; 3068 } 3069 boolean noOptions = canMoveOptions; 3070 for (int srcPos = i; srcPos <= end; srcPos++) { 3071 ActivityRecord p = activities.get(srcPos); 3072 if (p.finishing) { 3073 continue; 3074 } 3075 canMoveOptions = false; 3076 if (noOptions && topOptions == null) { 3077 topOptions = p.takeOptionsLocked(); 3078 if (topOptions != null) { 3079 noOptions = false; 3080 } 3081 } 3082 if (DEBUG_TASKS) Slog.w(TAG_TASKS, 3083 "resetTaskIntendedTask: calling finishActivity on " + p); 3084 if (finishActivityLocked( 3085 p, Activity.RESULT_CANCELED, null, "reset-task", false)) { 3086 end--; 3087 srcPos--; 3088 } 3089 } 3090 replyChainEnd = -1; 3091 } else { 3092 // If we were in the middle of a chain, well the 3093 // activity that started it all doesn't want anything 3094 // special, so leave it all as-is. 3095 replyChainEnd = -1; 3096 } 3097 } 3098 3099 return topOptions; 3100 } 3101 3102 /** 3103 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 3104 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 3105 * @param affinityTask The task we are looking for an affinity to. 3106 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 3107 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 3108 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 3109 */ 3110 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 3111 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 3112 int replyChainEnd = -1; 3113 final int taskId = task.taskId; 3114 final String taskAffinity = task.affinity; 3115 3116 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 3117 final int numActivities = activities.size(); 3118 final int rootActivityNdx = affinityTask.findEffectiveRootIndex(); 3119 3120 // Do not operate on or below the effective root Activity. 3121 for (int i = numActivities - 1; i > rootActivityNdx; --i) { 3122 ActivityRecord target = activities.get(i); 3123 if (target.frontOfTask) 3124 break; 3125 3126 final int flags = target.info.flags; 3127 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 3128 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 3129 3130 if (target.resultTo != null) { 3131 // If this activity is sending a reply to a previous 3132 // activity, we can't do anything with it now until 3133 // we reach the start of the reply chain. 3134 // XXX note that we are assuming the result is always 3135 // to the previous activity, which is almost always 3136 // the case but we really shouldn't count on. 3137 if (replyChainEnd < 0) { 3138 replyChainEnd = i; 3139 } 3140 } else if (topTaskIsHigher 3141 && allowTaskReparenting 3142 && taskAffinity != null 3143 && taskAffinity.equals(target.taskAffinity)) { 3144 // This activity has an affinity for our task. Either remove it if we are 3145 // clearing or move it over to our task. Note that 3146 // we currently punt on the case where we are resetting a 3147 // task that is not at the top but who has activities above 3148 // with an affinity to it... this is really not a normal 3149 // case, and we will need to later pull that task to the front 3150 // and usually at that point we will do the reset and pick 3151 // up those remaining activities. (This only happens if 3152 // someone starts an activity in a new task from an activity 3153 // in a task that is not currently on top.) 3154 if (forceReset || finishOnTaskLaunch) { 3155 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 3156 if (DEBUG_TASKS) Slog.v(TAG_TASKS, 3157 "Finishing task at index " + start + " to " + i); 3158 for (int srcPos = start; srcPos >= i; --srcPos) { 3159 final ActivityRecord p = activities.get(srcPos); 3160 if (p.finishing) { 3161 continue; 3162 } 3163 finishActivityLocked( 3164 p, Activity.RESULT_CANCELED, null, "move-affinity", false); 3165 } 3166 } else { 3167 if (taskInsertionPoint < 0) { 3168 taskInsertionPoint = task.mActivities.size(); 3169 3170 } 3171 3172 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 3173 if (DEBUG_TASKS) Slog.v(TAG_TASKS, 3174 "Reparenting from task=" + affinityTask + ":" + start + "-" + i 3175 + " to task=" + task + ":" + taskInsertionPoint); 3176 for (int srcPos = start; srcPos >= i; --srcPos) { 3177 final ActivityRecord p = activities.get(srcPos); 3178 p.reparent(task, taskInsertionPoint, "resetAffinityTaskIfNeededLocked"); 3179 3180 if (DEBUG_ADD_REMOVE) Slog.i(TAG_ADD_REMOVE, 3181 "Removing and adding activity " + p + " to stack at " + task 3182 + " callers=" + Debug.getCallers(3)); 3183 if (DEBUG_TASKS) Slog.v(TAG_TASKS, "Pulling activity " + p 3184 + " from " + srcPos + " in to resetting task " + task); 3185 } 3186 mWindowContainerController.positionChildAtTop( 3187 task.getWindowContainerController(), true /* includingParents */); 3188 3189 // Now we've moved it in to place... but what if this is 3190 // a singleTop activity and we have put it on top of another 3191 // instance of the same activity? Then we drop the instance 3192 // below so it remains singleTop. 3193 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 3194 ArrayList<ActivityRecord> taskActivities = task.mActivities; 3195 int targetNdx = taskActivities.indexOf(target); 3196 if (targetNdx > 0) { 3197 ActivityRecord p = taskActivities.get(targetNdx - 1); 3198 if (p.intent.getComponent().equals(target.intent.getComponent())) { 3199 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 3200 false); 3201 } 3202 } 3203 } 3204 } 3205 3206 replyChainEnd = -1; 3207 } 3208 } 3209 return taskInsertionPoint; 3210 } 3211 3212 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 3213 ActivityRecord newActivity) { 3214 boolean forceReset = 3215 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 3216 if (ACTIVITY_INACTIVE_RESET_TIME > 0 3217 && taskTop.getTask().getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 3218 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 3219 forceReset = true; 3220 } 3221 } 3222 3223 final TaskRecord task = taskTop.getTask(); 3224 3225 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 3226 * for remaining tasks. Used for later tasks to reparent to task. */ 3227 boolean taskFound = false; 3228 3229 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 3230 ActivityOptions topOptions = null; 3231 3232 // Preserve the location for reparenting in the new task. 3233 int reparentInsertionPoint = -1; 3234 3235 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 3236 final TaskRecord targetTask = mTaskHistory.get(i); 3237 3238 if (targetTask == task) { 3239 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 3240 taskFound = true; 3241 } else { 3242 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 3243 taskFound, forceReset, reparentInsertionPoint); 3244 } 3245 } 3246 3247 int taskNdx = mTaskHistory.indexOf(task); 3248 if (taskNdx >= 0) { 3249 do { 3250 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 3251 } while (taskTop == null && taskNdx >= 0); 3252 } 3253 3254 if (topOptions != null) { 3255 // If we got some ActivityOptions from an activity on top that 3256 // was removed from the task, propagate them to the new real top. 3257 if (taskTop != null) { 3258 taskTop.updateOptionsLocked(topOptions); 3259 } else { 3260 topOptions.abort(); 3261 } 3262 } 3263 3264 return taskTop; 3265 } 3266 3267 void sendActivityResultLocked(int callingUid, ActivityRecord r, 3268 String resultWho, int requestCode, int resultCode, Intent data) { 3269 3270 if (callingUid > 0) { 3271 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 3272 data, r.getUriPermissionsLocked(), r.userId); 3273 } 3274 3275 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 3276 + " : who=" + resultWho + " req=" + requestCode 3277 + " res=" + resultCode + " data=" + data); 3278 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 3279 try { 3280 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 3281 list.add(new ResultInfo(resultWho, requestCode, 3282 resultCode, data)); 3283 r.app.thread.scheduleSendResult(r.appToken, list); 3284 return; 3285 } catch (Exception e) { 3286 Slog.w(TAG, "Exception thrown sending result to " + r, e); 3287 } 3288 } 3289 3290 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 3291 } 3292 3293 /** Returns true if the task is one of the task finishing on-top of the top running task. */ 3294 boolean isATopFinishingTask(TaskRecord task) { 3295 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 3296 final TaskRecord current = mTaskHistory.get(i); 3297 final ActivityRecord r = current.topRunningActivityLocked(); 3298 if (r != null) { 3299 // We got a top running activity, so there isn't a top finishing task... 3300 return false; 3301 } 3302 if (current == task) { 3303 return true; 3304 } 3305 } 3306 return false; 3307 } 3308 3309 private void adjustFocusedActivityStackLocked(ActivityRecord r, String reason) { 3310 if (!mStackSupervisor.isFocusedStack(this) || 3311 ((mResumedActivity != r) && (mResumedActivity != null))) { 3312 return; 3313 } 3314 3315 final ActivityRecord next = topRunningActivityLocked(); 3316 final String myReason = reason + " adjustFocus"; 3317 3318 if (next != r) { 3319 if (next != null && StackId.keepFocusInStackIfPossible(mStackId) && isFocusable()) { 3320 // For freeform, docked, and pinned stacks we always keep the focus within the 3321 // stack as long as there is a running activity. 3322 return; 3323 } else { 3324 // Task is not guaranteed to be non-null. For example, destroying the 3325 // {@link ActivityRecord} will disassociate the task from the activity. 3326 final TaskRecord task = r.getTask(); 3327 3328 if (task == null) { 3329 throw new IllegalStateException("activity no longer associated with task:" + r); 3330 } 3331 3332 final boolean isAssistantOrOverAssistant = task.getStack().isAssistantStack() || 3333 task.isOverAssistantStack(); 3334 if (r.frontOfTask && isATopFinishingTask(task) 3335 && (task.isOverHomeStack() || isAssistantOrOverAssistant)) { 3336 // For non-fullscreen or assistant stack, we want to move the focus to the next 3337 // visible stack to prevent the home screen from moving to the top and obscuring 3338 // other visible stacks. 3339 if ((!mFullscreen || isAssistantOrOverAssistant) 3340 && adjustFocusToNextFocusableStackLocked(myReason)) { 3341 return; 3342 } 3343 // Move the home stack to the top if this stack is fullscreen or there is no 3344 // other visible stack. 3345 if (task.isOverHomeStack() && 3346 mStackSupervisor.moveHomeStackTaskToTop(myReason)) { 3347 // Activity focus was already adjusted. Nothing else to do... 3348 return; 3349 } 3350 } 3351 } 3352 } 3353 3354 mStackSupervisor.moveFocusableActivityStackToFrontLocked( 3355 mStackSupervisor.topRunningActivityLocked(), myReason); 3356 } 3357 3358 /** Find next proper focusable stack and make it focused. */ 3359 private boolean adjustFocusToNextFocusableStackLocked(String reason) { 3360 return adjustFocusToNextFocusableStackLocked(reason, false /* allowFocusSelf */); 3361 } 3362 3363 /** 3364 * Find next proper focusable stack and make it focused. 3365 * @param allowFocusSelf Is the focus allowed to remain on the same stack. 3366 */ 3367 private boolean adjustFocusToNextFocusableStackLocked(String reason, boolean allowFocusSelf) { 3368 final ActivityStack stack = mStackSupervisor.getNextFocusableStackLocked( 3369 allowFocusSelf ? null : this); 3370 final String myReason = reason + " adjustFocusToNextFocusableStack"; 3371 if (stack == null) { 3372 return false; 3373 } 3374 3375 final ActivityRecord top = stack.topRunningActivityLocked(); 3376 3377 if (stack.isHomeOrRecentsStack() && (top == null || !top.visible)) { 3378 // If we will be focusing on the home stack next and its current top activity isn't 3379 // visible, then use the task return to value to determine the home task to display 3380 // next. 3381 return mStackSupervisor.moveHomeStackTaskToTop(reason); 3382 } 3383 3384 stack.moveToFront(myReason); 3385 return true; 3386 } 3387 3388 final void stopActivityLocked(ActivityRecord r) { 3389 if (DEBUG_SWITCH) Slog.d(TAG_SWITCH, "Stopping: " + r); 3390 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 3391 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 3392 if (!r.finishing) { 3393 if (!mService.isSleepingLocked()) { 3394 if (DEBUG_STATES) Slog.d(TAG_STATES, "no-history finish of " + r); 3395 if (requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 3396 "stop-no-history", false)) { 3397 // If {@link requestFinishActivityLocked} returns {@code true}, 3398 // {@link adjustFocusedActivityStackLocked} would have been already called. 3399 r.resumeKeyDispatchingLocked(); 3400 return; 3401 } 3402 } else { 3403 if (DEBUG_STATES) Slog.d(TAG_STATES, "Not finishing noHistory " + r 3404 + " on stop because we're just sleeping"); 3405 } 3406 } 3407 } 3408 3409 if (r.app != null && r.app.thread != null) { 3410 adjustFocusedActivityStackLocked(r, "stopActivity"); 3411 r.resumeKeyDispatchingLocked(); 3412 try { 3413 r.stopped = false; 3414 if (DEBUG_STATES) Slog.v(TAG_STATES, 3415 "Moving to STOPPING: " + r + " (stop requested)"); 3416 r.state = STOPPING; 3417 if (DEBUG_VISIBILITY) Slog.v(TAG_VISIBILITY, 3418 "Stopping visible=" + r.visible + " for " + r); 3419 if (!r.visible) { 3420 r.setVisible(false); 3421 } 3422 EventLogTags.writeAmStopActivity( 3423 r.userId, System.identityHashCode(r), r.shortComponentName); 3424 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 3425 if (mService.isSleepingOrShuttingDownLocked()) { 3426 r.setSleeping(true); 3427 } 3428 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 3429 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 3430 } catch (Exception e) { 3431 // Maybe just ignore exceptions here... if the process 3432 // has crashed, our death notification will clean things 3433 // up. 3434 Slog.w(TAG, "Exception thrown during pause", e); 3435 // Just in case, assume it to be stopped. 3436 r.stopped = true; 3437 if (DEBUG_STATES) Slog.v(TAG_STATES, "Stop failed; moving to STOPPED: " + r); 3438 r.state = STOPPED; 3439 if (r.deferRelaunchUntilPaused) { 3440 destroyActivityLocked(r, true, "stop-except"); 3441 } 3442 } 3443 } 3444 } 3445 3446 /** 3447 * @return Returns true if the activity is being finished, false if for 3448 * some reason it is being left as-is. 3449 */ 3450 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 3451 Intent resultData, String reason, boolean oomAdj) { 3452 ActivityRecord r = isInStackLocked(token); 3453 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v(TAG_STATES, 3454 "Finishing activity token=" + token + " r=" 3455 + ", result=" + resultCode + ", data=" + resultData 3456 + ", reason=" + reason); 3457 if (r == null) { 3458 return false; 3459 } 3460 3461 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 3462 return true; 3463 } 3464 3465 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 3466 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3467 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3468 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3469 ActivityRecord r = activities.get(activityNdx); 3470 if (r.resultTo == self && r.requestCode == requestCode) { 3471 if ((r.resultWho == null && resultWho == null) || 3472 (r.resultWho != null && r.resultWho.equals(resultWho))) { 3473 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 3474 false); 3475 } 3476 } 3477 } 3478 } 3479 mService.updateOomAdjLocked(); 3480 } 3481 3482 final TaskRecord finishTopRunningActivityLocked(ProcessRecord app, String reason) { 3483 ActivityRecord r = topRunningActivityLocked(); 3484 TaskRecord finishedTask = null; 3485 if (r == null || r.app != app) { 3486 return null; 3487 } 3488 Slog.w(TAG, " Force finishing activity " 3489 + r.intent.getComponent().flattenToShortString()); 3490 finishedTask = r.getTask(); 3491 int taskNdx = mTaskHistory.indexOf(finishedTask); 3492 final TaskRecord task = finishedTask; 3493 int activityNdx = task.mActivities.indexOf(r); 3494 finishActivityLocked(r, Activity.RESULT_CANCELED, null, reason, false); 3495 finishedTask = task; 3496 // Also terminate any activities below it that aren't yet 3497 // stopped, to avoid a situation where one will get 3498 // re-start our crashing activity once it gets resumed again. 3499 --activityNdx; 3500 if (activityNdx < 0) { 3501 do { 3502 --taskNdx; 3503 if (taskNdx < 0) { 3504 break; 3505 } 3506 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 3507 } while (activityNdx < 0); 3508 } 3509 if (activityNdx >= 0) { 3510 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 3511 if (r.state == ActivityState.RESUMED 3512 || r.state == ActivityState.PAUSING 3513 || r.state == ActivityState.PAUSED) { 3514 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 3515 Slog.w(TAG, " Force finishing activity " 3516 + r.intent.getComponent().flattenToShortString()); 3517 finishActivityLocked(r, Activity.RESULT_CANCELED, null, reason, false); 3518 } 3519 } 3520 } 3521 return finishedTask; 3522 } 3523 3524 final void finishVoiceTask(IVoiceInteractionSession session) { 3525 IBinder sessionBinder = session.asBinder(); 3526 boolean didOne = false; 3527 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3528 TaskRecord tr = mTaskHistory.get(taskNdx); 3529 if (tr.voiceSession != null && tr.voiceSession.asBinder() == sessionBinder) { 3530 for (int activityNdx = tr.mActivities.size() - 1; activityNdx >= 0; --activityNdx) { 3531 ActivityRecord r = tr.mActivities.get(activityNdx); 3532 if (!r.finishing) { 3533 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "finish-voice", 3534 false); 3535 didOne = true; 3536 } 3537 } 3538 } else { 3539 // Check if any of the activities are using voice 3540 for (int activityNdx = tr.mActivities.size() - 1; activityNdx >= 0; --activityNdx) { 3541 ActivityRecord r = tr.mActivities.get(activityNdx); 3542 if (r.voiceSession != null 3543 && r.voiceSession.asBinder() == sessionBinder) { 3544 // Inform of cancellation 3545 r.clearVoiceSessionLocked(); 3546 try { 3547 r.app.thread.scheduleLocalVoiceInteractionStarted((IBinder) r.appToken, 3548 null); 3549 } catch (RemoteException re) { 3550 // Ok 3551 } 3552 mService.finishRunningVoiceLocked(); 3553 break; 3554 } 3555 } 3556 } 3557 } 3558 3559 if (didOne) { 3560 mService.updateOomAdjLocked(); 3561 } 3562 } 3563 3564 final boolean finishActivityAffinityLocked(ActivityRecord r) { 3565 ArrayList<ActivityRecord> activities = r.getTask().mActivities; 3566 for (int index = activities.indexOf(r); index >= 0; --index) { 3567 ActivityRecord cur = activities.get(index); 3568 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 3569 break; 3570 } 3571 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 3572 } 3573 return true; 3574 } 3575 3576 private void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 3577 // send the result 3578 ActivityRecord resultTo = r.resultTo; 3579 if (resultTo != null) { 3580 if (DEBUG_RESULTS) Slog.v(TAG_RESULTS, "Adding result to " + resultTo 3581 + " who=" + r.resultWho + " req=" + r.requestCode 3582 + " res=" + resultCode + " data=" + resultData); 3583 if (resultTo.userId != r.userId) { 3584 if (resultData != null) { 3585 resultData.prepareToLeaveUser(r.userId); 3586 } 3587 } 3588 if (r.info.applicationInfo.uid > 0) { 3589 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 3590 resultTo.packageName, resultData, 3591 resultTo.getUriPermissionsLocked(), resultTo.userId); 3592 } 3593 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 3594 resultData); 3595 r.resultTo = null; 3596 } 3597 else if (DEBUG_RESULTS) Slog.v(TAG_RESULTS, "No result destination from " + r); 3598 3599 // Make sure this HistoryRecord is not holding on to other resources, 3600 // because clients have remote IPC references to this object so we 3601 // can't assume that will go away and want to avoid circular IPC refs. 3602 r.results = null; 3603 r.pendingResults = null; 3604 r.newIntents = null; 3605 r.icicle = null; 3606 } 3607 3608 /** 3609 * See {@link #finishActivityLocked(ActivityRecord, int, Intent, String, boolean, boolean)} 3610 */ 3611 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 3612 String reason, boolean oomAdj) { 3613 return finishActivityLocked(r, resultCode, resultData, reason, oomAdj, !PAUSE_IMMEDIATELY); 3614 } 3615 3616 /** 3617 * @return Returns true if this activity has been removed from the history 3618 * list, or false if it is still in the list and will be removed later. 3619 */ 3620 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 3621 String reason, boolean oomAdj, boolean pauseImmediately) { 3622 if (r.finishing) { 3623 Slog.w(TAG, "Duplicate finish request for " + r); 3624 return false; 3625 } 3626 3627 mWindowManager.deferSurfaceLayout(); 3628 try { 3629 r.makeFinishingLocked(); 3630 final TaskRecord task = r.getTask(); 3631 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3632 r.userId, System.identityHashCode(r), 3633 task.taskId, r.shortComponentName, reason); 3634 final ArrayList<ActivityRecord> activities = task.mActivities; 3635 final int index = activities.indexOf(r); 3636 if (index < (activities.size() - 1)) { 3637 task.setFrontOfTask(); 3638 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 3639 // If the caller asked that this activity (and all above it) 3640 // be cleared when the task is reset, don't lose that information, 3641 // but propagate it up to the next activity. 3642 ActivityRecord next = activities.get(index+1); 3643 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 3644 } 3645 } 3646 3647 r.pauseKeyDispatchingLocked(); 3648 3649 adjustFocusedActivityStackLocked(r, "finishActivity"); 3650 3651 finishActivityResultsLocked(r, resultCode, resultData); 3652 3653 final boolean endTask = index <= 0; 3654 final int transit = endTask ? TRANSIT_TASK_CLOSE : TRANSIT_ACTIVITY_CLOSE; 3655 if (mResumedActivity == r) { 3656 if (DEBUG_VISIBILITY || DEBUG_TRANSITION) Slog.v(TAG_TRANSITION, 3657 "Prepare close transition: finishing " + r); 3658 if (endTask) { 3659 mService.mTaskChangeNotificationController.notifyTaskRemovalStarted( 3660 task.taskId); 3661 } 3662 mWindowManager.prepareAppTransition(transit, false); 3663 3664 // Tell window manager to prepare for this one to be removed. 3665 r.setVisibility(false); 3666 3667 if (mPausingActivity == null) { 3668 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Finish needs to pause: " + r); 3669 if (DEBUG_USER_LEAVING) Slog.v(TAG_USER_LEAVING, 3670 "finish() => pause with userLeaving=false"); 3671 startPausingLocked(false, false, null, pauseImmediately); 3672 } 3673 3674 if (endTask) { 3675 mStackSupervisor.removeLockedTaskLocked(task); 3676 } 3677 } else if (r.state != ActivityState.PAUSING) { 3678 // If the activity is PAUSING, we will complete the finish once 3679 // it is done pausing; else we can just directly finish it here. 3680 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Finish not pausing: " + r); 3681 if (r.visible) { 3682 prepareActivityHideTransitionAnimation(r, transit); 3683 } 3684 3685 final int finishMode = (r.visible || r.nowVisible) ? FINISH_AFTER_VISIBLE 3686 : FINISH_AFTER_PAUSE; 3687 final boolean removedActivity = finishCurrentActivityLocked(r, finishMode, oomAdj) 3688 == null; 3689 3690 // The following code is an optimization. When the last non-task overlay activity 3691 // is removed from the task, we remove the entire task from the stack. However, 3692 // since that is done after the scheduled destroy callback from the activity, that 3693 // call to change the visibility of the task overlay activities would be out of 3694 // sync with the activitiy visibility being set for this finishing activity above. 3695 // In this case, we can set the visibility of all the task overlay activities when 3696 // we detect the last one is finishing to keep them in sync. 3697 if (task.onlyHasTaskOverlayActivities(true /* excludeFinishing */)) { 3698 for (ActivityRecord taskOverlay : task.mActivities) { 3699 if (!taskOverlay.mTaskOverlay) { 3700 continue; 3701 } 3702 prepareActivityHideTransitionAnimation(taskOverlay, transit); 3703 } 3704 } 3705 return removedActivity; 3706 } else { 3707 if (DEBUG_PAUSE) Slog.v(TAG_PAUSE, "Finish waiting for pause of: " + r); 3708 } 3709 3710 return false; 3711 } finally { 3712 mWindowManager.continueSurfaceLayout(); 3713 } 3714 } 3715 3716 private void prepareActivityHideTransitionAnimation(ActivityRecord r, int transit) { 3717 mWindowManager.prepareAppTransition(transit, false); 3718 r.setVisibility(false); 3719 mWindowManager.executeAppTransition(); 3720 if (!mStackSupervisor.mActivitiesWaitingForVisibleActivity.contains(r)) { 3721 mStackSupervisor.mActivitiesWaitingForVisibleActivity.add(r); 3722 } 3723 } 3724 3725 static final int FINISH_IMMEDIATELY = 0; 3726 static final int FINISH_AFTER_PAUSE = 1; 3727 static final int FINISH_AFTER_VISIBLE = 2; 3728 3729 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 3730 // First things first: if this activity is currently visible, 3731 // and the resumed activity is not yet visible, then hold off on 3732 // finishing until the resumed one becomes visible. 3733 3734 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 3735 3736 if (mode == FINISH_AFTER_VISIBLE && (r.visible || r.nowVisible) 3737 && next != null && !next.nowVisible) { 3738 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 3739 addToStopping(r, false /* scheduleIdle */, false /* idleDelayed */); 3740 } 3741 if (DEBUG_STATES) Slog.v(TAG_STATES, 3742 "Moving to STOPPING: "+ r + " (finish requested)"); 3743 r.state = STOPPING; 3744 if (oomAdj) { 3745 mService.updateOomAdjLocked(); 3746 } 3747 return r; 3748 } 3749 3750 // make sure the record is cleaned out of other places. 3751 mStackSupervisor.mStoppingActivities.remove(r); 3752 mStackSupervisor.mGoingToSleepActivities.remove(r); 3753 mStackSupervisor.mActivitiesWaitingForVisibleActivity.remove(r); 3754 if (mResumedActivity == r) { 3755 mResumedActivity = null; 3756 } 3757 final ActivityState prevState = r.state; 3758 if (DEBUG_STATES) Slog.v(TAG_STATES, "Moving to FINISHING: " + r); 3759 r.state = ActivityState.FINISHING; 3760 final boolean finishingActivityInNonFocusedStack 3761 = r.getStack() != mStackSupervisor.getFocusedStack() 3762 && prevState == ActivityState.PAUSED && mode == FINISH_AFTER_VISIBLE; 3763 3764 if (mode == FINISH_IMMEDIATELY 3765 || (prevState == ActivityState.PAUSED 3766 && (mode == FINISH_AFTER_PAUSE || mStackId == PINNED_STACK_ID)) 3767 || finishingActivityInNonFocusedStack 3768 || prevState == STOPPING 3769 || prevState == STOPPED 3770 || prevState == ActivityState.INITIALIZING) { 3771 r.makeFinishingLocked(); 3772 boolean activityRemoved = destroyActivityLocked(r, true, "finish-imm"); 3773 3774 if (finishingActivityInNonFocusedStack) { 3775 // Finishing activity that was in paused state and it was in not currently focused 3776 // stack, need to make something visible in its place. 3777 mStackSupervisor.ensureActivitiesVisibleLocked(null, 0, !PRESERVE_WINDOWS); 3778 } 3779 if (activityRemoved) { 3780 mStackSupervisor.resumeFocusedStackTopActivityLocked(); 3781 } 3782 if (DEBUG_CONTAINERS) Slog.d(TAG_CONTAINERS, 3783 "destroyActivityLocked: finishCurrentActivityLocked r=" + r + 3784 " destroy returned removed=" + activityRemoved); 3785 return activityRemoved ? null : r; 3786 } 3787 3788 // Need to go through the full pause cycle to get this 3789 // activity into the stopped state and then finish it. 3790 if (DEBUG_ALL) Slog.v(TAG, "Enqueueing pending finish: " + r); 3791 mStackSupervisor.mFinishingActivities.add(r); 3792 r.resumeKeyDispatchingLocked(); 3793 mStackSupervisor.resumeFocusedStackTopActivityLocked(); 3794 return r; 3795 } 3796 3797 void finishAllActivitiesLocked(boolean immediately) { 3798 boolean noActivitiesInStack = true; 3799 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3800 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3801 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3802 final ActivityRecord r = activities.get(activityNdx); 3803 noActivitiesInStack = false; 3804 if (r.finishing && !immediately) { 3805 continue; 3806 } 3807 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r + " immediately"); 3808 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 3809 } 3810 } 3811 if (noActivitiesInStack) { 3812 mActivityContainer.onTaskListEmptyLocked(); 3813 } 3814 } 3815 3816 final boolean shouldUpRecreateTaskLocked(ActivityRecord srec, String destAffinity) { 3817 // Basic case: for simple app-centric recents, we need to recreate 3818 // the task if the affinity has changed. 3819 if (srec == null || srec.getTask().affinity == null || 3820 !srec.getTask().affinity.equals(destAffinity)) { 3821 return true; 3822 } 3823 // Document-centric case: an app may be split in to multiple documents; 3824 // they need to re-create their task if this current activity is the root 3825 // of a document, unless simply finishing it will return them to the the 3826 // correct app behind. 3827 final TaskRecord task = srec.getTask(); 3828 if (srec.frontOfTask && task != null && task.getBaseIntent() != null 3829 && task.getBaseIntent().isDocument()) { 3830 // Okay, this activity is at the root of its task. What to do, what to do... 3831 if (task.getTaskToReturnTo() != ActivityRecord.APPLICATION_ACTIVITY_TYPE) { 3832 // Finishing won't return to an application, so we need to recreate. 3833 return true; 3834 } 3835 // We now need to get the task below it to determine what to do. 3836 int taskIdx = mTaskHistory.indexOf(task); 3837 if (taskIdx <= 0) { 3838 Slog.w(TAG, "shouldUpRecreateTask: task not in history for " + srec); 3839 return false; 3840 } 3841 if (taskIdx == 0) { 3842 // At the bottom of the stack, nothing to go back to. 3843 return true; 3844 } 3845 TaskRecord prevTask = mTaskHistory.get(taskIdx); 3846 if (!task.affinity.equals(prevTask.affinity)) { 3847 // These are different apps, so need to recreate. 3848 return true; 3849 } 3850 } 3851 return false; 3852 } 3853 3854 final boolean navigateUpToLocked(ActivityRecord srec, Intent destIntent, int resultCode, 3855 Intent resultData) { 3856 final TaskRecord task = srec.getTask(); 3857 final ArrayList<ActivityRecord> activities = task.mActivities; 3858 final int start = activities.indexOf(srec); 3859 if (!mTaskHistory.contains(task) || (start < 0)) { 3860 return false; 3861 } 3862 int finishTo = start - 1; 3863 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 3864 boolean foundParentInTask = false; 3865 final ComponentName dest = destIntent.getComponent(); 3866 if (start > 0 && dest != null) { 3867 for (int i = finishTo; i >= 0; i--) { 3868 ActivityRecord r = activities.get(i); 3869 if (r.info.packageName.equals(dest.getPackageName()) && 3870 r.info.name.equals(dest.getClassName())) { 3871 finishTo = i; 3872 parent = r; 3873 foundParentInTask = true; 3874 break; 3875 } 3876 } 3877 } 3878 3879 IActivityController controller = mService.mController; 3880 if (controller != null) { 3881 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 3882 if (next != null) { 3883 // ask watcher if this is allowed 3884 boolean resumeOK = true; 3885 try { 3886 resumeOK = controller.activityResuming(next.packageName); 3887 } catch (RemoteException e) { 3888 mService.mController = null; 3889 Watchdog.getInstance().setActivityController(null); 3890 } 3891 3892 if (!resumeOK) { 3893 return false; 3894 } 3895 } 3896 } 3897 final long origId = Binder.clearCallingIdentity(); 3898 for (int i = start; i > finishTo; i--) { 3899 ActivityRecord r = activities.get(i); 3900 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 3901 // Only return the supplied result for the first activity finished 3902 resultCode = Activity.RESULT_CANCELED; 3903 resultData = null; 3904 } 3905 3906 if (parent != null && foundParentInTask) { 3907 final int parentLaunchMode = parent.info.launchMode; 3908 final int destIntentFlags = destIntent.getFlags(); 3909 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 3910 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 3911 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 3912 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 3913 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent, 3914 srec.packageName); 3915 } else { 3916 try { 3917 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 3918 destIntent.getComponent(), 0, srec.userId); 3919 int res = mService.mActivityStarter.startActivityLocked(srec.app.thread, 3920 destIntent, null /*ephemeralIntent*/, null, aInfo, null /*rInfo*/, null, 3921 null, parent.appToken, null, 0, -1, parent.launchedFromUid, 3922 parent.launchedFromPackage, -1, parent.launchedFromUid, 0, null, 3923 false, true, null, null, null, "navigateUpTo"); 3924 foundParentInTask = res == ActivityManager.START_SUCCESS; 3925 } catch (RemoteException e) { 3926 foundParentInTask = false; 3927 } 3928 requestFinishActivityLocked(parent.appToken, resultCode, 3929 resultData, "navigate-top", true); 3930 } 3931 } 3932 Binder.restoreCallingIdentity(origId); 3933 return foundParentInTask; 3934 } 3935 3936 /** 3937 * Remove any state associated with the {@link ActivityRecord}. This should be called whenever 3938 * an activity moves away from the stack. 3939 */ 3940 void onActivityRemovedFromStack(ActivityRecord r) { 3941 if (mResumedActivity == r) { 3942 mResumedActivity = null; 3943 } 3944 if (mPausingActivity == r) { 3945 mPausingActivity = null; 3946 } 3947 3948 removeTimeoutsForActivityLocked(r); 3949 } 3950 3951 /** 3952 * Perform the common clean-up of an activity record. This is called both 3953 * as part of destroyActivityLocked() (when destroying the client-side 3954 * representation) and cleaning things up as a result of its hosting 3955 * processing going away, in which case there is no remaining client-side 3956 * state to destroy so only the cleanup here is needed. 3957 * 3958 * Note: Call before #removeActivityFromHistoryLocked. 3959 */ 3960 private void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, boolean setState) { 3961 onActivityRemovedFromStack(r); 3962 3963 r.deferRelaunchUntilPaused = false; 3964 r.frozenBeforeDestroy = false; 3965 3966 if (setState) { 3967 if (DEBUG_STATES) Slog.v(TAG_STATES, "Moving to DESTROYED: " + r + " (cleaning up)"); 3968 r.state = ActivityState.DESTROYED; 3969 if (DEBUG_APP) Slog.v(TAG_APP, "Clearing app during cleanUp for activity " + r); 3970 r.app = null; 3971 } 3972 3973 // Inform supervisor the activity has been removed. 3974 mStackSupervisor.cleanupActivity(r); 3975 3976 3977 // Remove any pending results. 3978 if (r.finishing && r.pendingResults != null) { 3979 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 3980 PendingIntentRecord rec = apr.get(); 3981 if (rec != null) { 3982 mService.cancelIntentSenderLocked(rec, false); 3983 } 3984 } 3985 r.pendingResults = null; 3986 } 3987 3988 if (cleanServices) { 3989 cleanUpActivityServicesLocked(r); 3990 } 3991 3992 // Get rid of any pending idle timeouts. 3993 removeTimeoutsForActivityLocked(r); 3994 if (getVisibleBehindActivity() == r) { 3995 mStackSupervisor.requestVisibleBehindLocked(r, false); 3996 } 3997 3998 // Clean-up activities are no longer relaunching (e.g. app process died). Notify window 3999 // manager so it can update its bookkeeping. 4000 mWindowManager.notifyAppRelaunchesCleared(r.appToken); 4001 } 4002 4003 void removeTimeoutsForActivityLocked(ActivityRecord r) { 4004 mStackSupervisor.removeTimeoutsForActivityLocked(r); 4005 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 4006 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 4007 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 4008 r.finishLaunchTickingLocked(); 4009 } 4010 4011 private void removeActivityFromHistoryLocked(ActivityRecord r, String reason) { 4012 mStackSupervisor.removeChildActivityContainers(r); 4013 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 4014 r.makeFinishingLocked(); 4015 if (DEBUG_ADD_REMOVE) Slog.i(TAG_ADD_REMOVE, 4016 "Removing activity " + r + " from stack callers=" + Debug.getCallers(5)); 4017 4018 r.takeFromHistory(); 4019 removeTimeoutsForActivityLocked(r); 4020 if (DEBUG_STATES) Slog.v(TAG_STATES, 4021 "Moving to DESTROYED: " + r + " (removed from history)"); 4022 r.state = ActivityState.DESTROYED; 4023 if (DEBUG_APP) Slog.v(TAG_APP, "Clearing app during remove for activity " + r); 4024 r.app = null; 4025 r.removeWindowContainer(); 4026 final TaskRecord task = r.getTask(); 4027 final boolean lastActivity = task != null ? task.removeActivity(r) : false; 4028 // If we are removing the last activity in the task, not including task overlay activities, 4029 // then fall through into the block below to remove the entire task itself 4030 final boolean onlyHasTaskOverlays = task != null 4031 ? task.onlyHasTaskOverlayActivities(false /* excludingFinishing */) : false; 4032 4033 if (lastActivity || onlyHasTaskOverlays) { 4034 if (DEBUG_STACK) { 4035 Slog.i(TAG_STACK, 4036 "removeActivityFromHistoryLocked: last activity removed from " + this 4037 + " onlyHasTaskOverlays=" + onlyHasTaskOverlays); 4038 } 4039 4040 if (mStackSupervisor.isFocusedStack(this) && task == topTask() && 4041 task.isOverHomeStack()) { 4042 mStackSupervisor.moveHomeStackTaskToTop(reason); 4043 } 4044 4045 // The following block can be executed multiple times if there is more than one overlay. 4046 // {@link ActivityStackSupervisor#removeTaskByIdLocked} handles this by reverse lookup 4047 // of the task by id and exiting early if not found. 4048 if (onlyHasTaskOverlays) { 4049 // When destroying a task, tell the supervisor to remove it so that any activity it 4050 // has can be cleaned up correctly. This is currently the only place where we remove 4051 // a task with the DESTROYING mode, so instead of passing the onlyHasTaskOverlays 4052 // state into removeTask(), we just clear the task here before the other residual 4053 // work. 4054 // TODO: If the callers to removeTask() changes such that we have multiple places 4055 // where we are destroying the task, move this back into removeTask() 4056 mStackSupervisor.removeTaskByIdLocked(task.taskId, false /* killProcess */, 4057 !REMOVE_FROM_RECENTS, PAUSE_IMMEDIATELY); 4058 } 4059 4060 // We must keep the task around until all activities are destroyed. The following 4061 // statement will only execute once since overlays are also considered activities. 4062 if (lastActivity) { 4063 removeTask(task, reason, REMOVE_TASK_MODE_DESTROYING); 4064 } 4065 } 4066 cleanUpActivityServicesLocked(r); 4067 r.removeUriPermissionsLocked(); 4068 } 4069 4070 /** 4071 * Perform clean-up of service connections in an activity record. 4072 */ 4073 private void cleanUpActivityServicesLocked(ActivityRecord r) { 4074 // Throw away any services that have been bound by this activity. 4075 if (r.connections != null) { 4076 Iterator<ConnectionRecord> it = r.connections.iterator(); 4077 while (it.hasNext()) { 4078 ConnectionRecord c = it.next(); 4079 mService.mServices.removeConnectionLocked(c, null, r); 4080 } 4081 r.connections = null; 4082 } 4083 } 4084 4085 final void scheduleDestroyActivities(ProcessRecord owner, String reason) { 4086 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 4087 msg.obj = new ScheduleDestroyArgs(owner, reason); 4088 mHandler.sendMessage(msg); 4089 } 4090 4091 private void destroyActivitiesLocked(ProcessRecord owner, String reason) { 4092 boolean lastIsOpaque = false; 4093 boolean activityRemoved = false; 4094 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4095 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 4096 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 4097 final ActivityRecord r = activities.get(activityNdx); 4098 if (r.finishing) { 4099 continue; 4100 } 4101 if (r.fullscreen) { 4102 lastIsOpaque = true; 4103 } 4104 if (owner != null && r.app != owner) { 4105 continue; 4106 } 4107 if (!lastIsOpaque) { 4108 continue; 4109 } 4110 if (r.isDestroyable()) { 4111 if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, "Destroying " + r + " in state " + r.state 4112 + " resumed=" + mResumedActivity 4113 + " pausing=" + mPausingActivity + " for reason " + reason); 4114 if (destroyActivityLocked(r, true, reason)) { 4115 activityRemoved = true; 4116 } 4117 } 4118 } 4119 } 4120 if (activityRemoved) { 4121 mStackSupervisor.resumeFocusedStackTopActivityLocked(); 4122 } 4123 } 4124 4125 final boolean safelyDestroyActivityLocked(ActivityRecord r, String reason) { 4126 if (r.isDestroyable()) { 4127 if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, 4128 "Destroying " + r + " in state " + r.state + " resumed=" + mResumedActivity 4129 + " pausing=" + mPausingActivity + " for reason " + reason); 4130 return destroyActivityLocked(r, true, reason); 4131 } 4132 return false; 4133 } 4134 4135 final int releaseSomeActivitiesLocked(ProcessRecord app, ArraySet<TaskRecord> tasks, 4136 String reason) { 4137 // Iterate over tasks starting at the back (oldest) first. 4138 if (DEBUG_RELEASE) Slog.d(TAG_RELEASE, "Trying to release some activities in " + app); 4139 int maxTasks = tasks.size() / 4; 4140 if (maxTasks < 1) { 4141 maxTasks = 1; 4142 } 4143 int numReleased = 0; 4144 for (int taskNdx = 0; taskNdx < mTaskHistory.size() && maxTasks > 0; taskNdx++) { 4145 final TaskRecord task = mTaskHistory.get(taskNdx); 4146 if (!tasks.contains(task)) { 4147 continue; 4148 } 4149 if (DEBUG_RELEASE) Slog.d(TAG_RELEASE, "Looking for activities to release in " + task); 4150 int curNum = 0; 4151 final ArrayList<ActivityRecord> activities = task.mActivities; 4152 for (int actNdx = 0; actNdx < activities.size(); actNdx++) { 4153 final ActivityRecord activity = activities.get(actNdx); 4154 if (activity.app == app && activity.isDestroyable()) { 4155 if (DEBUG_RELEASE) Slog.v(TAG_RELEASE, "Destroying " + activity 4156 + " in state " + activity.state + " resumed=" + mResumedActivity 4157 + " pausing=" + mPausingActivity + " for reason " + reason); 4158 destroyActivityLocked(activity, true, reason); 4159 if (activities.get(actNdx) != activity) { 4160 // Was removed from list, back up so we don't miss the next one. 4161 actNdx--; 4162 } 4163 curNum++; 4164 } 4165 } 4166 if (curNum > 0) { 4167 numReleased += curNum; 4168 maxTasks--; 4169 if (mTaskHistory.get(taskNdx) != task) { 4170 // The entire task got removed, back up so we don't miss the next one. 4171 taskNdx--; 4172 } 4173 } 4174 } 4175 if (DEBUG_RELEASE) Slog.d(TAG_RELEASE, 4176 "Done releasing: did " + numReleased + " activities"); 4177 return numReleased; 4178 } 4179 4180 /** 4181 * Destroy the current CLIENT SIDE instance of an activity. This may be 4182 * called both when actually finishing an activity, or when performing 4183 * a configuration switch where we destroy the current client-side object 4184 * but then create a new client-side object for this same HistoryRecord. 4185 */ 4186 final boolean destroyActivityLocked(ActivityRecord r, boolean removeFromApp, String reason) { 4187 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v(TAG_SWITCH, 4188 "Removing activity from " + reason + ": token=" + r 4189 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 4190 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 4191 r.userId, System.identityHashCode(r), 4192 r.getTask().taskId, r.shortComponentName, reason); 4193 4194 boolean removedFromHistory = false; 4195 4196 cleanUpActivityLocked(r, false, false); 4197 4198 final boolean hadApp = r.app != null; 4199 4200 if (hadApp) { 4201 if (removeFromApp) { 4202 r.app.activities.remove(r); 4203 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 4204 mService.mHeavyWeightProcess = null; 4205 mService.mHandler.sendEmptyMessage( 4206 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 4207 } 4208 if (r.app.activities.isEmpty()) { 4209 // Update any services we are bound to that might care about whether 4210 // their client may have activities. 4211 mService.mServices.updateServiceConnectionActivitiesLocked(r.app); 4212 // No longer have activities, so update LRU list and oom adj. 4213 mService.updateLruProcessLocked(r.app, false, null); 4214 mService.updateOomAdjLocked(); 4215 } 4216 } 4217 4218 boolean skipDestroy = false; 4219 4220 try { 4221 if (DEBUG_SWITCH) Slog.i(TAG_SWITCH, "Destroying: " + r); 4222 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 4223 r.configChangeFlags); 4224 } catch (Exception e) { 4225 // We can just ignore exceptions here... if the process 4226 // has crashed, our death notification will clean things 4227 // up. 4228 //Slog.w(TAG, "Exception thrown during finish", e); 4229 if (r.finishing) { 4230 removeActivityFromHistoryLocked(r, reason + " exceptionInScheduleDestroy"); 4231 removedFromHistory = true; 4232 skipDestroy = true; 4233 } 4234 } 4235 4236 r.nowVisible = false; 4237 4238 // If the activity is finishing, we need to wait on removing it 4239 // from the list to give it a chance to do its cleanup. During 4240 // that time it may make calls back with its token so we need to 4241 // be able to find it on the list and so we don't want to remove 4242 // it from the list yet. Otherwise, we can just immediately put 4243 // it in the destroyed state since we are not removing it from the 4244 // list. 4245 if (r.finishing && !skipDestroy) { 4246 if (DEBUG_STATES) Slog.v(TAG_STATES, "Moving to DESTROYING: " + r 4247 + " (destroy requested)"); 4248 r.state = ActivityState.DESTROYING; 4249 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 4250 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 4251 } else { 4252 if (DEBUG_STATES) Slog.v(TAG_STATES, 4253 "Moving to DESTROYED: " + r + " (destroy skipped)"); 4254 r.state = ActivityState.DESTROYED; 4255 if (DEBUG_APP) Slog.v(TAG_APP, "Clearing app during destroy for activity " + r); 4256 r.app = null; 4257 } 4258 } else { 4259 // remove this record from the history. 4260 if (r.finishing) { 4261 removeActivityFromHistoryLocked(r, reason + " hadNoApp"); 4262 removedFromHistory = true; 4263 } else { 4264 if (DEBUG_STATES) Slog.v(TAG_STATES, "Moving to DESTROYED: " + r + " (no app)"); 4265 r.state = ActivityState.DESTROYED; 4266 if (DEBUG_APP) Slog.v(TAG_APP, "Clearing app during destroy for activity " + r); 4267 r.app = null; 4268 } 4269 } 4270 4271 r.configChangeFlags = 0; 4272 4273 if (!mLRUActivities.remove(r) && hadApp) { 4274 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 4275 } 4276 4277 return removedFromHistory; 4278 } 4279 4280 final void activityDestroyedLocked(IBinder token, String reason) { 4281 final long origId = Binder.clearCallingIdentity(); 4282 try { 4283 ActivityRecord r = ActivityRecord.forTokenLocked(token); 4284 if (r != null) { 4285 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 4286 } 4287 if (DEBUG_CONTAINERS) Slog.d(TAG_CONTAINERS, "activityDestroyedLocked: r=" + r); 4288 4289 if (isInStackLocked(r) != null) { 4290 if (r.state == ActivityState.DESTROYING) { 4291 cleanUpActivityLocked(r, true, false); 4292 removeActivityFromHistoryLocked(r, reason); 4293 } 4294 } 4295 mStackSupervisor.resumeFocusedStackTopActivityLocked(); 4296 } finally { 4297 Binder.restoreCallingIdentity(origId); 4298 } 4299 } 4300 4301 void releaseBackgroundResources(ActivityRecord r) { 4302 if (hasVisibleBehindActivity() && 4303 !mHandler.hasMessages(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG)) { 4304 if (r == topRunningActivityLocked() 4305 && shouldBeVisible(null) == STACK_VISIBLE) { 4306 // Don't release the top activity if it has requested to run behind the next 4307 // activity and the stack is currently visible. 4308 return; 4309 } 4310 if (DEBUG_STATES) Slog.d(TAG_STATES, "releaseBackgroundResources activtyDisplay=" + 4311 mActivityContainer.mActivityDisplay + " visibleBehind=" + r + " app=" + r.app + 4312 " thread=" + r.app.thread); 4313 if (r != null && r.app != null && r.app.thread != null) { 4314 try { 4315 r.app.thread.scheduleCancelVisibleBehind(r.appToken); 4316 } catch (RemoteException e) { 4317 } 4318 mHandler.sendEmptyMessageDelayed(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG, 500); 4319 } else { 4320 Slog.e(TAG, "releaseBackgroundResources: activity " + r + " no longer running"); 4321 backgroundResourcesReleased(); 4322 } 4323 } 4324 } 4325 4326 final void backgroundResourcesReleased() { 4327 mHandler.removeMessages(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG); 4328 final ActivityRecord r = getVisibleBehindActivity(); 4329 if (r != null) { 4330 mStackSupervisor.mStoppingActivities.add(r); 4331 setVisibleBehindActivity(null); 4332 mStackSupervisor.scheduleIdleTimeoutLocked(null); 4333 } 4334 mStackSupervisor.resumeFocusedStackTopActivityLocked(); 4335 } 4336 4337 boolean hasVisibleBehindActivity() { 4338 return isAttached() && mActivityContainer.mActivityDisplay.hasVisibleBehindActivity(); 4339 } 4340 4341 void setVisibleBehindActivity(ActivityRecord r) { 4342 if (isAttached()) { 4343 mActivityContainer.mActivityDisplay.setVisibleBehindActivity(r); 4344 } 4345 } 4346 4347 ActivityRecord getVisibleBehindActivity() { 4348 return isAttached() ? mActivityContainer.mActivityDisplay.mVisibleBehindActivity : null; 4349 } 4350 4351 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 4352 ProcessRecord app, String listName) { 4353 int i = list.size(); 4354 if (DEBUG_CLEANUP) Slog.v(TAG_CLEANUP, 4355 "Removing app " + app + " from list " + listName + " with " + i + " entries"); 4356 while (i > 0) { 4357 i--; 4358 ActivityRecord r = list.get(i); 4359 if (DEBUG_CLEANUP) Slog.v(TAG_CLEANUP, "Record #" + i + " " + r); 4360 if (r.app == app) { 4361 if (DEBUG_CLEANUP) Slog.v(TAG_CLEANUP, "---> REMOVING this entry!"); 4362 list.remove(i); 4363 removeTimeoutsForActivityLocked(r); 4364 } 4365 } 4366 } 4367 4368 private boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 4369 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 4370 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 4371 "mStoppingActivities"); 4372 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 4373 "mGoingToSleepActivities"); 4374 removeHistoryRecordsForAppLocked(mStackSupervisor.mActivitiesWaitingForVisibleActivity, app, 4375 "mActivitiesWaitingForVisibleActivity"); 4376 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 4377 "mFinishingActivities"); 4378 4379 boolean hasVisibleActivities = false; 4380 4381 // Clean out the history list. 4382 int i = numActivities(); 4383 if (DEBUG_CLEANUP) Slog.v(TAG_CLEANUP, 4384 "Removing app " + app + " from history with " + i + " entries"); 4385 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4386 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 4387 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 4388 final ActivityRecord r = activities.get(activityNdx); 4389 --i; 4390 if (DEBUG_CLEANUP) Slog.v(TAG_CLEANUP, 4391 "Record #" + i + " " + r + ": app=" + r.app); 4392 if (r.app == app) { 4393 if (r.visible) { 4394 hasVisibleActivities = true; 4395 } 4396 final boolean remove; 4397 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 4398 // Don't currently have state for the activity, or 4399 // it is finishing -- always remove it. 4400 remove = true; 4401 } else if (!r.visible && r.launchCount > 2 && 4402 r.lastLaunchTime > (SystemClock.uptimeMillis() - 60000)) { 4403 // We have launched this activity too many times since it was 4404 // able to run, so give up and remove it. 4405 // (Note if the activity is visible, we don't remove the record. 4406 // We leave the dead window on the screen but the process will 4407 // not be restarted unless user explicitly tap on it.) 4408 remove = true; 4409 } else { 4410 // The process may be gone, but the activity lives on! 4411 remove = false; 4412 } 4413 if (remove) { 4414 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) Slog.i(TAG_ADD_REMOVE, 4415 "Removing activity " + r + " from stack at " + i 4416 + ": haveState=" + r.haveState 4417 + " stateNotNeeded=" + r.stateNotNeeded 4418 + " finishing=" + r.finishing 4419 + " state=" + r.state + " callers=" + Debug.getCallers(5)); 4420 if (!r.finishing) { 4421 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 4422 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 4423 r.userId, System.identityHashCode(r), 4424 r.getTask().taskId, r.shortComponentName, 4425 "proc died without state saved"); 4426 if (r.state == ActivityState.RESUMED) { 4427 mService.updateUsageStats(r, false); 4428 } 4429 } 4430 } else { 4431 // We have the current state for this activity, so 4432 // it can be restarted later when needed. 4433 if (DEBUG_ALL) Slog.v(TAG, "Keeping entry, setting app to null"); 4434 if (DEBUG_APP) Slog.v(TAG_APP, 4435 "Clearing app during removeHistory for activity " + r); 4436 r.app = null; 4437 // Set nowVisible to previous visible state. If the app was visible while 4438 // it died, we leave the dead window on screen so it's basically visible. 4439 // This is needed when user later tap on the dead window, we need to stop 4440 // other apps when user transfers focus to the restarted activity. 4441 r.nowVisible = r.visible; 4442 if (!r.haveState) { 4443 if (DEBUG_SAVED_STATE) Slog.i(TAG_SAVED_STATE, 4444 "App died, clearing saved state of " + r); 4445 r.icicle = null; 4446 } 4447 } 4448 cleanUpActivityLocked(r, true, true); 4449 if (remove) { 4450 removeActivityFromHistoryLocked(r, "appDied"); 4451 } 4452 } 4453 } 4454 } 4455 4456 return hasVisibleActivities; 4457 } 4458 4459 private void updateTransitLocked(int transit, ActivityOptions options) { 4460 if (options != null) { 4461 ActivityRecord r = topRunningActivityLocked(); 4462 if (r != null && r.state != ActivityState.RESUMED) { 4463 r.updateOptionsLocked(options); 4464 } else { 4465 ActivityOptions.abort(options); 4466 } 4467 } 4468 mWindowManager.prepareAppTransition(transit, false); 4469 } 4470 4471 private void updateTaskMovement(TaskRecord task, boolean toFront) { 4472 if (task.isPersistable) { 4473 task.mLastTimeMoved = System.currentTimeMillis(); 4474 // Sign is used to keep tasks sorted when persisted. Tasks sent to the bottom most 4475 // recently will be most negative, tasks sent to the bottom before that will be less 4476 // negative. Similarly for recent tasks moved to the top which will be most positive. 4477 if (!toFront) { 4478 task.mLastTimeMoved *= -1; 4479 } 4480 } 4481 mStackSupervisor.invalidateTaskLayers(); 4482 } 4483 4484 void moveHomeStackTaskToTop() { 4485 final int top = mTaskHistory.size() - 1; 4486 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 4487 final TaskRecord task = mTaskHistory.get(taskNdx); 4488 if (task.taskType == HOME_ACTIVITY_TYPE) { 4489 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG_STACK, 4490 "moveHomeStackTaskToTop: moving " + task); 4491 mTaskHistory.remove(taskNdx); 4492 mTaskHistory.add(top, task); 4493 updateTaskMovement(task, true); 4494 return; 4495 } 4496 } 4497 } 4498 4499 final void moveTaskToFrontLocked(TaskRecord tr, boolean noAnimation, ActivityOptions options, 4500 AppTimeTracker timeTracker, String reason) { 4501 if (DEBUG_SWITCH) Slog.v(TAG_SWITCH, "moveTaskToFront: " + tr); 4502 4503 final ActivityStack topStack = getTopStackOnDisplay(); 4504 final ActivityRecord topActivity = topStack != null ? topStack.topActivity() : null; 4505 final int numTasks = mTaskHistory.size(); 4506 final int index = mTaskHistory.indexOf(tr); 4507 if (numTasks == 0 || index < 0) { 4508 // nothing to do! 4509 if (noAnimation) { 4510 ActivityOptions.abort(options); 4511 } else { 4512 updateTransitLocked(TRANSIT_TASK_TO_FRONT, options); 4513 } 4514 return; 4515 } 4516 4517 if (timeTracker != null) { 4518 // The caller wants a time tracker associated with this task. 4519 for (int i = tr.mActivities.size() - 1; i >= 0; i--) { 4520 tr.mActivities.get(i).appTimeTracker = timeTracker; 4521 } 4522 } 4523 4524 // Shift all activities with this task up to the top 4525 // of the stack, keeping them in the same internal order. 4526 insertTaskAtTop(tr, null); 4527 4528 // Don't refocus if invisible to current user 4529 final ActivityRecord top = tr.getTopActivity(); 4530 if (top == null || !top.okToShowLocked()) { 4531 addRecentActivityLocked(top); 4532 ActivityOptions.abort(options); 4533 return; 4534 } 4535 4536 // Set focus to the top running activity of this stack. 4537 final ActivityRecord r = topRunningActivityLocked(); 4538 mStackSupervisor.moveFocusableActivityStackToFrontLocked(r, reason); 4539 4540 if (DEBUG_TRANSITION) Slog.v(TAG_TRANSITION, "Prepare to front transition: task=" + tr); 4541 if (noAnimation) { 4542 mWindowManager.prepareAppTransition(TRANSIT_NONE, false); 4543 if (r != null) { 4544 mNoAnimActivities.add(r); 4545 } 4546 ActivityOptions.abort(options); 4547 } else { 4548 updateTransitLocked(TRANSIT_TASK_TO_FRONT, options); 4549 } 4550 // If a new task is moved to the front, then mark the existing top activity as supporting 4551 // picture-in-picture while paused 4552 if (topActivity != null && topActivity.getStack().getStackId() != PINNED_STACK_ID) { 4553 topActivity.supportsPictureInPictureWhilePausing = true; 4554 } 4555 4556 mStackSupervisor.resumeFocusedStackTopActivityLocked(); 4557 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 4558 4559 mService.mTaskChangeNotificationController.notifyTaskMovedToFront(tr.taskId); 4560 } 4561 4562 /** 4563 * Worker method for rearranging history stack. Implements the function of moving all 4564 * activities for a specific task (gathering them if disjoint) into a single group at the 4565 * bottom of the stack. 4566 * 4567 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 4568 * to premeptively cancel the move. 4569 * 4570 * @param taskId The taskId to collect and move to the bottom. 4571 * @return Returns true if the move completed, false if not. 4572 */ 4573 final boolean moveTaskToBackLocked(int taskId) { 4574 final TaskRecord tr = taskForIdLocked(taskId); 4575 if (tr == null) { 4576 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 4577 return false; 4578 } 4579 Slog.i(TAG, "moveTaskToBack: " + tr); 4580 4581 // If the task is locked, then show the lock task toast 4582 if (mStackSupervisor.isLockedTask(tr)) { 4583 mStackSupervisor.showLockTaskToast(); 4584 return false; 4585 } 4586 4587 // If we have a watcher, preflight the move before committing to it. First check 4588 // for *other* available tasks, but if none are available, then try again allowing the 4589 // current task to be selected. 4590 if (mStackSupervisor.isFrontStackOnDisplay(this) && mService.mController != null) { 4591 ActivityRecord next = topRunningActivityLocked(null, taskId); 4592 if (next == null) { 4593 next = topRunningActivityLocked(null, 0); 4594 } 4595 if (next != null) { 4596 // ask watcher if this is allowed 4597 boolean moveOK = true; 4598 try { 4599 moveOK = mService.mController.activityResuming(next.packageName); 4600 } catch (RemoteException e) { 4601 mService.mController = null; 4602 Watchdog.getInstance().setActivityController(null); 4603 } 4604 if (!moveOK) { 4605 return false; 4606 } 4607 } 4608 } 4609 4610 if (DEBUG_TRANSITION) Slog.v(TAG_TRANSITION, "Prepare to back transition: task=" + taskId); 4611 4612 if (mStackId == HOME_STACK_ID && topTask().isHomeTask()) { 4613 // For the case where we are moving the home task back and there is an activity visible 4614 // behind it on the fullscreen or assistant stack, we want to move the focus to the 4615 // visible behind activity to maintain order with what the user is seeing. 4616 ActivityRecord visibleBehind = null; 4617 final ActivityStack fullscreenStack = 4618 mStackSupervisor.getStack(FULLSCREEN_WORKSPACE_STACK_ID); 4619 final ActivityStack assistantStack = 4620 mStackSupervisor.getStack(ASSISTANT_STACK_ID); 4621 if (fullscreenStack != null && fullscreenStack.hasVisibleBehindActivity()) { 4622 visibleBehind = fullscreenStack.getVisibleBehindActivity(); 4623 } else if (assistantStack != null && assistantStack.hasVisibleBehindActivity()) { 4624 visibleBehind = assistantStack.getVisibleBehindActivity(); 4625 } 4626 if (visibleBehind != null) { 4627 mStackSupervisor.moveFocusableActivityStackToFrontLocked(visibleBehind, 4628 "moveTaskToBack"); 4629 mStackSupervisor.resumeFocusedStackTopActivityLocked(); 4630 return true; 4631 } 4632 } 4633 4634 boolean prevIsHome = false; 4635 4636 // If true, we should resume the home activity next if the task we are moving to the 4637 // back is over the home stack. We force to false if the task we are moving to back 4638 // is the home task and we don't want it resumed after moving to the back. 4639 final boolean canGoHome = !tr.isHomeTask() && tr.isOverHomeStack(); 4640 if (canGoHome) { 4641 final TaskRecord nextTask = getNextTask(tr); 4642 if (nextTask != null) { 4643 nextTask.setTaskToReturnTo(tr.getTaskToReturnTo()); 4644 } else { 4645 prevIsHome = true; 4646 } 4647 } 4648 4649 boolean requiresMove = mTaskHistory.indexOf(tr) != 0; 4650 if (requiresMove) { 4651 mTaskHistory.remove(tr); 4652 mTaskHistory.add(0, tr); 4653 updateTaskMovement(tr, false); 4654 4655 mWindowManager.prepareAppTransition(TRANSIT_TASK_TO_BACK, false); 4656 mWindowContainerController.positionChildAtBottom(tr.getWindowContainerController()); 4657 } 4658 4659 if (mStackId == PINNED_STACK_ID) { 4660 mStackSupervisor.removeStackLocked(PINNED_STACK_ID); 4661 return true; 4662 } 4663 4664 // Otherwise, there is an assumption that moving a task to the back moves it behind the 4665 // home activity. We make sure here that some activity in the stack will launch home. 4666 int numTasks = mTaskHistory.size(); 4667 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 4668 final TaskRecord task = mTaskHistory.get(taskNdx); 4669 if (task.isOverHomeStack()) { 4670 break; 4671 } 4672 if (taskNdx == 1) { 4673 // Set the last task before tr to go to home. 4674 task.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 4675 } 4676 } 4677 4678 final TaskRecord task = mResumedActivity != null ? mResumedActivity.getTask() : null; 4679 if (prevIsHome || (task == tr && canGoHome) || (numTasks <= 1 && isOnHomeDisplay())) { 4680 if (!mService.mBooting && !mService.mBooted) { 4681 // Not ready yet! 4682 return false; 4683 } 4684 tr.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 4685 return mStackSupervisor.resumeHomeStackTask(null, "moveTaskToBack"); 4686 } 4687 4688 mStackSupervisor.resumeFocusedStackTopActivityLocked(); 4689 return true; 4690 } 4691 4692 /** 4693 * Get the topmost stack on the current display. It may be different from focused stack, because 4694 * focus may be on another display. 4695 */ 4696 private ActivityStack getTopStackOnDisplay() { 4697 final ArrayList<ActivityStack> stacks = mActivityContainer.mActivityDisplay.mStacks; 4698 return stacks.isEmpty() ? null : stacks.get(stacks.size() - 1); 4699 } 4700 4701 static void logStartActivity(int tag, ActivityRecord r, TaskRecord task) { 4702 final Uri data = r.intent.getData(); 4703 final String strData = data != null ? data.toSafeString() : null; 4704 4705 EventLog.writeEvent(tag, 4706 r.userId, System.identityHashCode(r), task.taskId, 4707 r.shortComponentName, r.intent.getAction(), 4708 r.intent.getType(), strData, r.intent.getFlags()); 4709 } 4710 4711 /** 4712 * Ensures all visible activities at or below the input activity have the right configuration. 4713 */ 4714 void ensureVisibleActivitiesConfigurationLocked(ActivityRecord start, boolean preserveWindow) { 4715 if (start == null || !start.visible) { 4716 return; 4717 } 4718 4719 final TaskRecord startTask = start.getTask(); 4720 boolean behindFullscreen = false; 4721 boolean updatedConfig = false; 4722 4723 for (int taskIndex = mTaskHistory.indexOf(startTask); taskIndex >= 0; --taskIndex) { 4724 final TaskRecord task = mTaskHistory.get(taskIndex); 4725 final ArrayList<ActivityRecord> activities = task.mActivities; 4726 int activityIndex = 4727 (start.getTask() == task) ? activities.indexOf(start) : activities.size() - 1; 4728 for (; activityIndex >= 0; --activityIndex) { 4729 final ActivityRecord r = activities.get(activityIndex); 4730 updatedConfig |= r.ensureActivityConfigurationLocked(0 /* globalChanges */, 4731 preserveWindow); 4732 if (r.fullscreen) { 4733 behindFullscreen = true; 4734 break; 4735 } 4736 } 4737 if (behindFullscreen) { 4738 break; 4739 } 4740 } 4741 if (updatedConfig) { 4742 // Ensure the resumed state of the focus activity if we updated the configuration of 4743 // any activity. 4744 mStackSupervisor.resumeFocusedStackTopActivityLocked(); 4745 } 4746 } 4747 4748 // TODO: Figure-out a way to consolidate with resize() method below. 4749 @Override 4750 public void requestResize(Rect bounds) { 4751 mService.resizeStack(mStackId, bounds, true /* allowResizeInDockedMode */, 4752 false /* preserveWindows */, false /* animate */, -1 /* animationDuration */); 4753 } 4754 4755 // TODO: Can only be called from special methods in ActivityStackSupervisor. 4756 // Need to consolidate those calls points into this resize method so anyone can call directly. 4757 void resize(Rect bounds, Rect tempTaskBounds, Rect tempTaskInsetBounds) { 4758 bounds = TaskRecord.validateBounds(bounds); 4759 4760 if (!updateBoundsAllowed(bounds, tempTaskBounds, tempTaskInsetBounds)) { 4761 return; 4762 } 4763 4764 // Update override configurations of all tasks in the stack. 4765 final Rect taskBounds = tempTaskBounds != null ? tempTaskBounds : bounds; 4766 final Rect insetBounds = tempTaskInsetBounds != null ? tempTaskInsetBounds : taskBounds; 4767 4768 mTmpBounds.clear(); 4769 mTmpConfigs.clear(); 4770 mTmpInsetBounds.clear(); 4771 4772 for (int i = mTaskHistory.size() - 1; i >= 0; i--) { 4773 final TaskRecord task = mTaskHistory.get(i); 4774 if (task.isResizeable()) { 4775 if (mStackId == FREEFORM_WORKSPACE_STACK_ID) { 4776 // For freeform stack we don't adjust the size of the tasks to match that 4777 // of the stack, but we do try to make sure the tasks are still contained 4778 // with the bounds of the stack. 4779 mTmpRect2.set(task.mBounds); 4780 fitWithinBounds(mTmpRect2, bounds); 4781 task.updateOverrideConfiguration(mTmpRect2); 4782 } else { 4783 task.updateOverrideConfiguration(taskBounds, insetBounds); 4784 } 4785 } 4786 4787 mTmpConfigs.put(task.taskId, task.getOverrideConfiguration()); 4788 mTmpBounds.put(task.taskId, task.mBounds); 4789 if (tempTaskInsetBounds != null) { 4790 mTmpInsetBounds.put(task.taskId, tempTaskInsetBounds); 4791 } 4792 } 4793 4794 mFullscreen = mWindowContainerController.resize(bounds, mTmpConfigs, mTmpBounds, 4795 mTmpInsetBounds); 4796 setBounds(bounds); 4797 } 4798 4799 4800 /** 4801 * Adjust bounds to stay within stack bounds. 4802 * 4803 * Since bounds might be outside of stack bounds, this method tries to move the bounds in a way 4804 * that keep them unchanged, but be contained within the stack bounds. 4805 * 4806 * @param bounds Bounds to be adjusted. 4807 * @param stackBounds Bounds within which the other bounds should remain. 4808 */ 4809 private static void fitWithinBounds(Rect bounds, Rect stackBounds) { 4810 if (stackBounds == null || stackBounds.contains(bounds)) { 4811 return; 4812 } 4813 4814 if (bounds.left < stackBounds.left || bounds.right > stackBounds.right) { 4815 final int maxRight = stackBounds.right 4816 - (stackBounds.width() / FIT_WITHIN_BOUNDS_DIVIDER); 4817 int horizontalDiff = stackBounds.left - bounds.left; 4818 if ((horizontalDiff < 0 && bounds.left >= maxRight) 4819 || (bounds.left + horizontalDiff >= maxRight)) { 4820 horizontalDiff = maxRight - bounds.left; 4821 } 4822 bounds.left += horizontalDiff; 4823 bounds.right += horizontalDiff; 4824 } 4825 4826 if (bounds.top < stackBounds.top || bounds.bottom > stackBounds.bottom) { 4827 final int maxBottom = stackBounds.bottom 4828 - (stackBounds.height() / FIT_WITHIN_BOUNDS_DIVIDER); 4829 int verticalDiff = stackBounds.top - bounds.top; 4830 if ((verticalDiff < 0 && bounds.top >= maxBottom) 4831 || (bounds.top + verticalDiff >= maxBottom)) { 4832 verticalDiff = maxBottom - bounds.top; 4833 } 4834 bounds.top += verticalDiff; 4835 bounds.bottom += verticalDiff; 4836 } 4837 } 4838 4839 boolean willActivityBeVisibleLocked(IBinder token) { 4840 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4841 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 4842 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 4843 final ActivityRecord r = activities.get(activityNdx); 4844 if (r.appToken == token) { 4845 return true; 4846 } 4847 if (r.fullscreen && !r.finishing) { 4848 return false; 4849 } 4850 } 4851 } 4852 final ActivityRecord r = ActivityRecord.forTokenLocked(token); 4853 if (r == null) { 4854 return false; 4855 } 4856 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 4857 + " would have returned true for r=" + r); 4858 return !r.finishing; 4859 } 4860 4861 void closeSystemDialogsLocked() { 4862 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4863 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 4864 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 4865 final ActivityRecord r = activities.get(activityNdx); 4866 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 4867 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 4868 } 4869 } 4870 } 4871 } 4872 4873 boolean finishDisabledPackageActivitiesLocked(String packageName, Set<String> filterByClasses, 4874 boolean doit, boolean evenPersistent, int userId) { 4875 boolean didSomething = false; 4876 TaskRecord lastTask = null; 4877 ComponentName homeActivity = null; 4878 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4879 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 4880 int numActivities = activities.size(); 4881 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 4882 ActivityRecord r = activities.get(activityNdx); 4883 final boolean sameComponent = 4884 (r.packageName.equals(packageName) && (filterByClasses == null 4885 || filterByClasses.contains(r.realActivity.getClassName()))) 4886 || (packageName == null && r.userId == userId); 4887 if ((userId == UserHandle.USER_ALL || r.userId == userId) 4888 && (sameComponent || r.getTask() == lastTask) 4889 && (r.app == null || evenPersistent || !r.app.persistent)) { 4890 if (!doit) { 4891 if (r.finishing) { 4892 // If this activity is just finishing, then it is not 4893 // interesting as far as something to stop. 4894 continue; 4895 } 4896 return true; 4897 } 4898 if (r.isHomeActivity()) { 4899 if (homeActivity != null && homeActivity.equals(r.realActivity)) { 4900 Slog.i(TAG, "Skip force-stop again " + r); 4901 continue; 4902 } else { 4903 homeActivity = r.realActivity; 4904 } 4905 } 4906 didSomething = true; 4907 Slog.i(TAG, " Force finishing activity " + r); 4908 if (sameComponent) { 4909 if (r.app != null) { 4910 r.app.removed = true; 4911 } 4912 r.app = null; 4913 } 4914 lastTask = r.getTask(); 4915 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 4916 true)) { 4917 // r has been deleted from mActivities, accommodate. 4918 --numActivities; 4919 --activityNdx; 4920 } 4921 } 4922 } 4923 } 4924 return didSomething; 4925 } 4926 4927 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 4928 boolean focusedStack = mStackSupervisor.getFocusedStack() == this; 4929 boolean topTask = true; 4930 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4931 final TaskRecord task = mTaskHistory.get(taskNdx); 4932 if (task.getTopActivity() == null) { 4933 continue; 4934 } 4935 ActivityRecord r = null; 4936 ActivityRecord top = null; 4937 ActivityRecord tmp; 4938 int numActivities = 0; 4939 int numRunning = 0; 4940 final ArrayList<ActivityRecord> activities = task.mActivities; 4941 if (!allowed && !task.isHomeTask() && task.effectiveUid != callingUid) { 4942 continue; 4943 } 4944 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 4945 tmp = activities.get(activityNdx); 4946 if (tmp.finishing) { 4947 continue; 4948 } 4949 r = tmp; 4950 4951 // Initialize state for next task if needed. 4952 if (top == null || (top.state == ActivityState.INITIALIZING)) { 4953 top = r; 4954 numActivities = numRunning = 0; 4955 } 4956 4957 // Add 'r' into the current task. 4958 numActivities++; 4959 if (r.app != null && r.app.thread != null) { 4960 numRunning++; 4961 } 4962 4963 if (DEBUG_ALL) Slog.v( 4964 TAG, r.intent.getComponent().flattenToShortString() 4965 + ": task=" + r.getTask()); 4966 } 4967 4968 RunningTaskInfo ci = new RunningTaskInfo(); 4969 ci.id = task.taskId; 4970 ci.stackId = mStackId; 4971 ci.baseActivity = r.intent.getComponent(); 4972 ci.topActivity = top.intent.getComponent(); 4973 ci.lastActiveTime = task.lastActiveTime; 4974 if (focusedStack && topTask) { 4975 // Give the latest time to ensure foreground task can be sorted 4976 // at the first, because lastActiveTime of creating task is 0. 4977 ci.lastActiveTime = System.currentTimeMillis(); 4978 topTask = false; 4979 } 4980 4981 if (top.getTask() != null) { 4982 ci.description = top.getTask().lastDescription; 4983 } 4984 ci.numActivities = numActivities; 4985 ci.numRunning = numRunning; 4986 ci.supportsSplitScreenMultiWindow = task.supportsSplitScreen(); 4987 ci.resizeMode = task.mResizeMode; 4988 list.add(ci); 4989 } 4990 } 4991 4992 void unhandledBackLocked() { 4993 final int top = mTaskHistory.size() - 1; 4994 if (DEBUG_SWITCH) Slog.d(TAG_SWITCH, "Performing unhandledBack(): top activity at " + top); 4995 if (top >= 0) { 4996 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 4997 int activityTop = activities.size() - 1; 4998 if (activityTop >= 0) { 4999 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 5000 "unhandled-back", true); 5001 } 5002 } 5003 } 5004 5005 /** 5006 * Reset local parameters because an app's activity died. 5007 * @param app The app of the activity that died. 5008 * @return result from removeHistoryRecordsForAppLocked. 5009 */ 5010 boolean handleAppDiedLocked(ProcessRecord app) { 5011 if (mPausingActivity != null && mPausingActivity.app == app) { 5012 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG_PAUSE, 5013 "App died while pausing: " + mPausingActivity); 5014 mPausingActivity = null; 5015 } 5016 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 5017 mLastPausedActivity = null; 5018 mLastNoHistoryActivity = null; 5019 } 5020 5021 return removeHistoryRecordsForAppLocked(app); 5022 } 5023 5024 void handleAppCrashLocked(ProcessRecord app) { 5025 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 5026 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 5027 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 5028 final ActivityRecord r = activities.get(activityNdx); 5029 if (r.app == app) { 5030 Slog.w(TAG, " Force finishing activity " 5031 + r.intent.getComponent().flattenToShortString()); 5032 // Force the destroy to skip right to removal. 5033 r.app = null; 5034 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 5035 } 5036 } 5037 } 5038 } 5039 5040 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 5041 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 5042 boolean printed = false; 5043 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 5044 final TaskRecord task = mTaskHistory.get(taskNdx); 5045 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 5046 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 5047 dumpClient, dumpPackage, needSep, header, 5048 " Task id #" + task.taskId + "\n" + 5049 " mFullscreen=" + task.mFullscreen + "\n" + 5050 " mBounds=" + task.mBounds + "\n" + 5051 " mMinWidth=" + task.mMinWidth + "\n" + 5052 " mMinHeight=" + task.mMinHeight + "\n" + 5053 " mLastNonFullscreenBounds=" + task.mLastNonFullscreenBounds); 5054 if (printed) { 5055 header = null; 5056 } 5057 } 5058 return printed; 5059 } 5060 5061 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 5062 ArrayList<ActivityRecord> activities = new ArrayList<>(); 5063 5064 if ("all".equals(name)) { 5065 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 5066 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 5067 } 5068 } else if ("top".equals(name)) { 5069 final int top = mTaskHistory.size() - 1; 5070 if (top >= 0) { 5071 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 5072 int listTop = list.size() - 1; 5073 if (listTop >= 0) { 5074 activities.add(list.get(listTop)); 5075 } 5076 } 5077 } else { 5078 ItemMatcher matcher = new ItemMatcher(); 5079 matcher.build(name); 5080 5081 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 5082 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 5083 if (matcher.match(r1, r1.intent.getComponent())) { 5084 activities.add(r1); 5085 } 5086 } 5087 } 5088 } 5089 5090 return activities; 5091 } 5092 5093 ActivityRecord restartPackage(String packageName) { 5094 ActivityRecord starting = topRunningActivityLocked(); 5095 5096 // All activities that came from the package must be 5097 // restarted as if there was a config change. 5098 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 5099 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 5100 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 5101 final ActivityRecord a = activities.get(activityNdx); 5102 if (a.info.packageName.equals(packageName)) { 5103 a.forceNewConfig = true; 5104 if (starting != null && a == starting && a.visible) { 5105 a.startFreezingScreenLocked(starting.app, 5106 CONFIG_SCREEN_LAYOUT); 5107 } 5108 } 5109 } 5110 } 5111 5112 return starting; 5113 } 5114 5115 /** 5116 * Removes the input task from this stack. 5117 * @param task to remove. 5118 * @param reason for removal. 5119 * @param mode task removal mode. Either {@link #REMOVE_TASK_MODE_DESTROYING}, 5120 * {@link #REMOVE_TASK_MODE_MOVING}, {@link #REMOVE_TASK_MODE_MOVING_TO_TOP}. 5121 */ 5122 void removeTask(TaskRecord task, String reason, int mode) { 5123 for (ActivityRecord record : task.mActivities) { 5124 onActivityRemovedFromStack(record); 5125 } 5126 5127 final int taskNdx = mTaskHistory.indexOf(task); 5128 final int topTaskNdx = mTaskHistory.size() - 1; 5129 if (task.isOverHomeStack() && taskNdx < topTaskNdx) { 5130 final TaskRecord nextTask = mTaskHistory.get(taskNdx + 1); 5131 if (!nextTask.isOverHomeStack() && !nextTask.isOverAssistantStack()) { 5132 nextTask.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 5133 } 5134 } 5135 mTaskHistory.remove(task); 5136 removeActivitiesFromLRUListLocked(task); 5137 updateTaskMovement(task, true); 5138 5139 if (mode == REMOVE_TASK_MODE_DESTROYING && task.mActivities.isEmpty()) { 5140 // TODO: VI what about activity? 5141 final boolean isVoiceSession = task.voiceSession != null; 5142 if (isVoiceSession) { 5143 try { 5144 task.voiceSession.taskFinished(task.intent, task.taskId); 5145 } catch (RemoteException e) { 5146 } 5147 } 5148 if (task.autoRemoveFromRecents() || isVoiceSession) { 5149 // Task creator asked to remove this when done, or this task was a voice 5150 // interaction, so it should not remain on the recent tasks list. 5151 mRecentTasks.remove(task); 5152 task.removedFromRecents(); 5153 } 5154 5155 task.removeWindowContainer(); 5156 } 5157 5158 if (mTaskHistory.isEmpty()) { 5159 if (DEBUG_STACK) Slog.i(TAG_STACK, "removeTask: removing stack=" + this); 5160 // We only need to adjust focused stack if this stack is in focus and we are not in the 5161 // process of moving the task to the top of the stack that will be focused. 5162 if (isOnHomeDisplay() && mode != REMOVE_TASK_MODE_MOVING_TO_TOP 5163 && mStackSupervisor.isFocusedStack(this)) { 5164 String myReason = reason + " leftTaskHistoryEmpty"; 5165 if (mFullscreen || !adjustFocusToNextFocusableStackLocked(myReason)) { 5166 mStackSupervisor.moveHomeStackToFront(myReason); 5167 } 5168 } 5169 if (mStacks != null) { 5170 mStacks.remove(this); 5171 mStacks.add(0, this); 5172 } 5173 if (!isHomeOrRecentsStack()) { 5174 mActivityContainer.onTaskListEmptyLocked(); 5175 } 5176 } 5177 5178 task.setStack(null); 5179 5180 // Notify if a task from the pinned stack is being removed (or moved depending on the mode) 5181 if (mStackId == PINNED_STACK_ID) { 5182 mService.mTaskChangeNotificationController.notifyActivityUnpinned(); 5183 } 5184 } 5185 5186 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 5187 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 5188 boolean toTop, int type) { 5189 TaskRecord task = new TaskRecord(mService, taskId, info, intent, voiceSession, 5190 voiceInteractor, type); 5191 // add the task to stack first, mTaskPositioner might need the stack association 5192 addTask(task, toTop, "createTaskRecord"); 5193 final boolean isLockscreenShown = 5194 mService.mStackSupervisor.mKeyguardController.isKeyguardShowing(); 5195 if (!layoutTaskInStack(task, info.windowLayout) && mBounds != null && task.isResizeable() 5196 && !isLockscreenShown) { 5197 task.updateOverrideConfiguration(mBounds); 5198 } 5199 task.createWindowContainer(toTop, (info.flags & FLAG_SHOW_FOR_ALL_USERS) != 0); 5200 return task; 5201 } 5202 5203 boolean layoutTaskInStack(TaskRecord task, ActivityInfo.WindowLayout windowLayout) { 5204 if (mTaskPositioner == null) { 5205 return false; 5206 } 5207 mTaskPositioner.updateDefaultBounds(task, mTaskHistory, windowLayout); 5208 return true; 5209 } 5210 5211 ArrayList<TaskRecord> getAllTasks() { 5212 return new ArrayList<>(mTaskHistory); 5213 } 5214 5215 void addTask(final TaskRecord task, final boolean toTop, String reason) { 5216 addTask(task, toTop ? MAX_VALUE : 0, true /* schedulePictureInPictureModeChange */, reason); 5217 if (toTop) { 5218 // TODO: figure-out a way to remove this call. 5219 mWindowContainerController.positionChildAtTop(task.getWindowContainerController(), 5220 true /* includingParents */); 5221 } 5222 } 5223 5224 // TODO: This shouldn't allow automatic reparenting. Remove the call to preAddTask and deal 5225 // with the fall-out... 5226 void addTask(final TaskRecord task, int position, boolean schedulePictureInPictureModeChange, 5227 String reason) { 5228 // TODO: Is this remove really needed? Need to look into the call path for the other addTask 5229 mTaskHistory.remove(task); 5230 position = getAdjustedPositionForTask(task, position, null /* starting */); 5231 final boolean toTop = position >= mTaskHistory.size(); 5232 final ActivityStack prevStack = preAddTask(task, reason, toTop); 5233 5234 mTaskHistory.add(position, task); 5235 task.setStack(this); 5236 5237 if (toTop) { 5238 updateTaskReturnToForTopInsertion(task); 5239 } 5240 5241 updateTaskMovement(task, toTop); 5242 5243 postAddTask(task, prevStack, schedulePictureInPictureModeChange); 5244 } 5245 5246 void positionChildAt(TaskRecord task, int index) { 5247 5248 if (task.getStack() != this) { 5249 throw new IllegalArgumentException("AS.positionChildAt: task=" + task 5250 + " is not a child of stack=" + this + " current parent=" + task.getStack()); 5251 } 5252 5253 task.updateOverrideConfigurationForStack(this); 5254 5255 final ActivityRecord topRunningActivity = task.topRunningActivityLocked(); 5256 final boolean wasResumed = topRunningActivity == task.getStack().mResumedActivity; 5257 insertTaskAtPosition(task, index); 5258 task.setStack(this); 5259 postAddTask(task, null /* prevStack */, true /* schedulePictureInPictureModeChange */); 5260 5261 if (wasResumed) { 5262 if (mResumedActivity != null) { 5263 Log.wtf(TAG, "mResumedActivity was already set when moving mResumedActivity from" 5264 + " other stack to this stack mResumedActivity=" + mResumedActivity 5265 + " other mResumedActivity=" + topRunningActivity); 5266 } 5267 mResumedActivity = topRunningActivity; 5268 } 5269 5270 // The task might have already been running and its visibility needs to be synchronized with 5271 // the visibility of the stack / windows. 5272 ensureActivitiesVisibleLocked(null, 0, !PRESERVE_WINDOWS); 5273 mStackSupervisor.resumeFocusedStackTopActivityLocked(); 5274 } 5275 5276 private ActivityStack preAddTask(TaskRecord task, String reason, boolean toTop) { 5277 final ActivityStack prevStack = task.getStack(); 5278 if (prevStack != null && prevStack != this) { 5279 prevStack.removeTask(task, reason, 5280 toTop ? REMOVE_TASK_MODE_MOVING_TO_TOP : REMOVE_TASK_MODE_MOVING); 5281 } 5282 return prevStack; 5283 } 5284 5285 /** 5286 * @param schedulePictureInPictureModeChange specifies whether or not to schedule the PiP mode 5287 * change. Callers may set this to false if they are explicitly scheduling PiP mode 5288 * changes themselves, like during the PiP animation 5289 */ 5290 private void postAddTask(TaskRecord task, ActivityStack prevStack, 5291 boolean schedulePictureInPictureModeChange) { 5292 if (schedulePictureInPictureModeChange && prevStack != null) { 5293 mStackSupervisor.scheduleUpdatePictureInPictureModeIfNeeded(task, prevStack); 5294 } else if (task.voiceSession != null) { 5295 try { 5296 task.voiceSession.taskStarted(task.intent, task.taskId); 5297 } catch (RemoteException e) { 5298 } 5299 } 5300 } 5301 5302 void moveToFrontAndResumeStateIfNeeded(ActivityRecord r, boolean moveToFront, boolean setResume, 5303 boolean setPause, String reason) { 5304 if (!moveToFront) { 5305 return; 5306 } 5307 5308 // If the activity owns the last resumed activity, transfer that together, 5309 // so that we don't resume the same activity again in the new stack. 5310 // Apps may depend on onResume()/onPause() being called in pairs. 5311 if (setResume) { 5312 mResumedActivity = r; 5313 updateLRUListLocked(r); 5314 } 5315 // If the activity was previously pausing, then ensure we transfer that as well 5316 if (setPause) { 5317 mPausingActivity = r; 5318 schedulePauseTimeout(r); 5319 } 5320 // Move the stack in which we are placing the activity to the front. The call will also 5321 // make sure the activity focus is set. 5322 moveToFront(reason); 5323 } 5324 5325 public int getStackId() { 5326 return mStackId; 5327 } 5328 5329 @Override 5330 public String toString() { 5331 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 5332 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 5333 } 5334 5335 void onLockTaskPackagesUpdatedLocked() { 5336 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 5337 mTaskHistory.get(taskNdx).setLockTaskAuth(); 5338 } 5339 } 5340 5341 void executeAppTransition(ActivityOptions options) { 5342 mWindowManager.executeAppTransition(); 5343 mNoAnimActivities.clear(); 5344 ActivityOptions.abort(options); 5345 } 5346 } 5347