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 com.android.server.am.ActivityManagerService.TAG; 20 import static com.android.server.am.ActivityManagerService.localLOGV; 21 import static com.android.server.am.ActivityManagerService.DEBUG_CLEANUP; 22 import static com.android.server.am.ActivityManagerService.DEBUG_CONFIGURATION; 23 import static com.android.server.am.ActivityManagerService.DEBUG_PAUSE; 24 import static com.android.server.am.ActivityManagerService.DEBUG_RESULTS; 25 import static com.android.server.am.ActivityManagerService.DEBUG_STACK; 26 import static com.android.server.am.ActivityManagerService.DEBUG_SWITCH; 27 import static com.android.server.am.ActivityManagerService.DEBUG_TASKS; 28 import static com.android.server.am.ActivityManagerService.DEBUG_TRANSITION; 29 import static com.android.server.am.ActivityManagerService.DEBUG_USER_LEAVING; 30 import static com.android.server.am.ActivityManagerService.DEBUG_VISBILITY; 31 import static com.android.server.am.ActivityManagerService.VALIDATE_TOKENS; 32 33 import static com.android.server.am.ActivityRecord.HOME_ACTIVITY_TYPE; 34 import static com.android.server.am.ActivityRecord.APPLICATION_ACTIVITY_TYPE; 35 36 import static com.android.server.am.ActivityStackSupervisor.DEBUG_ADD_REMOVE; 37 import static com.android.server.am.ActivityStackSupervisor.DEBUG_APP; 38 import static com.android.server.am.ActivityStackSupervisor.DEBUG_CONTAINERS; 39 import static com.android.server.am.ActivityStackSupervisor.DEBUG_RELEASE; 40 import static com.android.server.am.ActivityStackSupervisor.DEBUG_SAVED_STATE; 41 import static com.android.server.am.ActivityStackSupervisor.DEBUG_SCREENSHOTS; 42 import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 43 import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 44 45 import android.util.ArraySet; 46 import com.android.internal.app.IVoiceInteractor; 47 import com.android.internal.os.BatteryStatsImpl; 48 import com.android.server.Watchdog; 49 import com.android.server.am.ActivityManagerService.ItemMatcher; 50 import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 51 import com.android.server.wm.AppTransition; 52 import com.android.server.wm.TaskGroup; 53 import com.android.server.wm.WindowManagerService; 54 55 import android.app.Activity; 56 import android.app.ActivityManager; 57 import android.app.ActivityOptions; 58 import android.app.AppGlobals; 59 import android.app.IActivityController; 60 import android.app.ResultInfo; 61 import android.app.ActivityManager.RunningTaskInfo; 62 import android.content.ComponentName; 63 import android.content.Intent; 64 import android.content.pm.ActivityInfo; 65 import android.content.pm.PackageManager; 66 import android.content.res.Configuration; 67 import android.content.res.Resources; 68 import android.graphics.Bitmap; 69 import android.net.Uri; 70 import android.os.Binder; 71 import android.os.Bundle; 72 import android.os.Debug; 73 import android.os.Handler; 74 import android.os.IBinder; 75 import android.os.Looper; 76 import android.os.Message; 77 import android.os.PersistableBundle; 78 import android.os.RemoteException; 79 import android.os.SystemClock; 80 import android.os.Trace; 81 import android.os.UserHandle; 82 import android.service.voice.IVoiceInteractionSession; 83 import android.util.EventLog; 84 import android.util.Slog; 85 import android.view.Display; 86 87 import java.io.FileDescriptor; 88 import java.io.PrintWriter; 89 import java.lang.ref.WeakReference; 90 import java.util.ArrayList; 91 import java.util.Iterator; 92 import java.util.List; 93 import java.util.Objects; 94 95 /** 96 * State and management of a single stack of activities. 97 */ 98 final class ActivityStack { 99 100 // Ticks during which we check progress while waiting for an app to launch. 101 static final int LAUNCH_TICK = 500; 102 103 // How long we wait until giving up on the last activity to pause. This 104 // is short because it directly impacts the responsiveness of starting the 105 // next activity. 106 static final int PAUSE_TIMEOUT = 500; 107 108 // How long we wait for the activity to tell us it has stopped before 109 // giving up. This is a good amount of time because we really need this 110 // from the application in order to get its saved state. 111 static final int STOP_TIMEOUT = 10*1000; 112 113 // How long we wait until giving up on an activity telling us it has 114 // finished destroying itself. 115 static final int DESTROY_TIMEOUT = 10*1000; 116 117 // How long until we reset a task when the user returns to it. Currently 118 // disabled. 119 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 120 121 // How long between activity launches that we consider safe to not warn 122 // the user about an unexpected activity being launched on top. 123 static final long START_WARN_TIME = 5*1000; 124 125 // Set to false to disable the preview that is shown while a new activity 126 // is being started. 127 static final boolean SHOW_APP_STARTING_PREVIEW = true; 128 129 // How long to wait for all background Activities to redraw following a call to 130 // convertToTranslucent(). 131 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 132 133 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 134 135 enum ActivityState { 136 INITIALIZING, 137 RESUMED, 138 PAUSING, 139 PAUSED, 140 STOPPING, 141 STOPPED, 142 FINISHING, 143 DESTROYING, 144 DESTROYED 145 } 146 147 final ActivityManagerService mService; 148 final WindowManagerService mWindowManager; 149 150 /** 151 * The back history of all previous (and possibly still 152 * running) activities. It contains #TaskRecord objects. 153 */ 154 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 155 156 /** 157 * Used for validating app tokens with window manager. 158 */ 159 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 160 161 /** 162 * List of running activities, sorted by recent usage. 163 * The first entry in the list is the least recently used. 164 * It contains HistoryRecord objects. 165 */ 166 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 167 168 /** 169 * Animations that for the current transition have requested not to 170 * be considered for the transition animation. 171 */ 172 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 173 174 /** 175 * When we are in the process of pausing an activity, before starting the 176 * next one, this variable holds the activity that is currently being paused. 177 */ 178 ActivityRecord mPausingActivity = null; 179 180 /** 181 * This is the last activity that we put into the paused state. This is 182 * used to determine if we need to do an activity transition while sleeping, 183 * when we normally hold the top activity paused. 184 */ 185 ActivityRecord mLastPausedActivity = null; 186 187 /** 188 * Activities that specify No History must be removed once the user navigates away from them. 189 * If the device goes to sleep with such an activity in the paused state then we save it here 190 * and finish it later if another activity replaces it on wakeup. 191 */ 192 ActivityRecord mLastNoHistoryActivity = null; 193 194 /** 195 * Current activity that is resumed, or null if there is none. 196 */ 197 ActivityRecord mResumedActivity = null; 198 199 /** 200 * This is the last activity that has been started. It is only used to 201 * identify when multiple activities are started at once so that the user 202 * can be warned they may not be in the activity they think they are. 203 */ 204 ActivityRecord mLastStartedActivity = null; 205 206 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 207 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 208 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 209 // Activity in mTranslucentActivityWaiting is notified via 210 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 211 // background activity being drawn then the same call will be made with a true value. 212 ActivityRecord mTranslucentActivityWaiting = null; 213 private ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 214 new ArrayList<ActivityRecord>(); 215 216 /** 217 * Set when we know we are going to be calling updateConfiguration() 218 * soon, so want to skip intermediate config checks. 219 */ 220 boolean mConfigWillChange; 221 222 long mLaunchStartTime = 0; 223 long mFullyDrawnStartTime = 0; 224 225 /** 226 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 227 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 228 */ 229 private ActivityRecord mLastScreenshotActivity = null; 230 private Bitmap mLastScreenshotBitmap = null; 231 232 int mCurrentUser; 233 234 final int mStackId; 235 final ActivityContainer mActivityContainer; 236 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 237 ArrayList<ActivityStack> mStacks; 238 /** The attached Display's unique identifier, or -1 if detached */ 239 int mDisplayId; 240 241 /** Run all ActivityStacks through this */ 242 final ActivityStackSupervisor mStackSupervisor; 243 244 /** Used to keep resumeTopActivityLocked() from being entered recursively */ 245 private boolean inResumeTopActivity; 246 247 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 248 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 249 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 250 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 251 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 252 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 253 static final int RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG = 254 ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 7; 255 256 static class ScheduleDestroyArgs { 257 final ProcessRecord mOwner; 258 final String mReason; 259 ScheduleDestroyArgs(ProcessRecord owner, String reason) { 260 mOwner = owner; 261 mReason = reason; 262 } 263 } 264 265 final Handler mHandler; 266 267 final class ActivityStackHandler extends Handler { 268 //public Handler() { 269 // if (localLOGV) Slog.v(TAG, "Handler started!"); 270 //} 271 ActivityStackHandler(Looper looper) { 272 super(looper); 273 } 274 275 @Override 276 public void handleMessage(Message msg) { 277 switch (msg.what) { 278 case PAUSE_TIMEOUT_MSG: { 279 ActivityRecord r = (ActivityRecord)msg.obj; 280 // We don't at this point know if the activity is fullscreen, 281 // so we need to be conservative and assume it isn't. 282 Slog.w(TAG, "Activity pause timeout for " + r); 283 synchronized (mService) { 284 if (r.app != null) { 285 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 286 } 287 activityPausedLocked(r.appToken, true); 288 } 289 } break; 290 case LAUNCH_TICK_MSG: { 291 ActivityRecord r = (ActivityRecord)msg.obj; 292 synchronized (mService) { 293 if (r.continueLaunchTickingLocked()) { 294 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 295 } 296 } 297 } break; 298 case DESTROY_TIMEOUT_MSG: { 299 ActivityRecord r = (ActivityRecord)msg.obj; 300 // We don't at this point know if the activity is fullscreen, 301 // so we need to be conservative and assume it isn't. 302 Slog.w(TAG, "Activity destroy timeout for " + r); 303 synchronized (mService) { 304 activityDestroyedLocked(r != null ? r.appToken : null); 305 } 306 } break; 307 case STOP_TIMEOUT_MSG: { 308 ActivityRecord r = (ActivityRecord)msg.obj; 309 // We don't at this point know if the activity is fullscreen, 310 // so we need to be conservative and assume it isn't. 311 Slog.w(TAG, "Activity stop timeout for " + r); 312 synchronized (mService) { 313 if (r.isInHistory()) { 314 activityStoppedLocked(r, null, null, null); 315 } 316 } 317 } break; 318 case DESTROY_ACTIVITIES_MSG: { 319 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 320 synchronized (mService) { 321 destroyActivitiesLocked(args.mOwner, args.mReason); 322 } 323 } break; 324 case TRANSLUCENT_TIMEOUT_MSG: { 325 synchronized (mService) { 326 notifyActivityDrawnLocked(null); 327 } 328 } break; 329 case RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG: { 330 synchronized (mService) { 331 final ActivityRecord r = getVisibleBehindActivity(); 332 Slog.e(TAG, "Timeout waiting for cancelVisibleBehind player=" + r); 333 if (r != null) { 334 mService.killAppAtUsersRequest(r.app, null); 335 } 336 } 337 } break; 338 } 339 } 340 } 341 342 int numActivities() { 343 int count = 0; 344 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 345 count += mTaskHistory.get(taskNdx).mActivities.size(); 346 } 347 return count; 348 } 349 350 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 351 mActivityContainer = activityContainer; 352 mStackSupervisor = activityContainer.getOuter(); 353 mService = mStackSupervisor.mService; 354 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 355 mWindowManager = mService.mWindowManager; 356 mStackId = activityContainer.mStackId; 357 mCurrentUser = mService.mCurrentUserId; 358 } 359 360 /** 361 * Checks whether the userid is a profile of the current user. 362 */ 363 private boolean isCurrentProfileLocked(int userId) { 364 if (userId == mCurrentUser) return true; 365 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 366 if (mService.mCurrentProfileIds[i] == userId) return true; 367 } 368 return false; 369 } 370 371 boolean okToShowLocked(ActivityRecord r) { 372 return isCurrentProfileLocked(r.userId) 373 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 374 } 375 376 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 377 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 378 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 379 if (r != null) { 380 return r; 381 } 382 } 383 return null; 384 } 385 386 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 387 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 388 final TaskRecord task = mTaskHistory.get(taskNdx); 389 final ArrayList<ActivityRecord> activities = task.mActivities; 390 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 391 ActivityRecord r = activities.get(activityNdx); 392 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 393 return r; 394 } 395 } 396 } 397 return null; 398 } 399 400 /** 401 * This is a simplified version of topRunningActivityLocked that provides a number of 402 * optional skip-over modes. It is intended for use with the ActivityController hook only. 403 * 404 * @param token If non-null, any history records matching this token will be skipped. 405 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 406 * 407 * @return Returns the HistoryRecord of the next activity on the stack. 408 */ 409 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 410 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 411 TaskRecord task = mTaskHistory.get(taskNdx); 412 if (task.taskId == taskId) { 413 continue; 414 } 415 ArrayList<ActivityRecord> activities = task.mActivities; 416 for (int i = activities.size() - 1; i >= 0; --i) { 417 final ActivityRecord r = activities.get(i); 418 // Note: the taskId check depends on real taskId fields being non-zero 419 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 420 return r; 421 } 422 } 423 } 424 return null; 425 } 426 427 final ActivityRecord topActivity() { 428 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 429 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 430 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 431 final ActivityRecord r = activities.get(activityNdx); 432 if (!r.finishing) { 433 return r; 434 } 435 } 436 } 437 return null; 438 } 439 440 final TaskRecord topTask() { 441 final int size = mTaskHistory.size(); 442 if (size > 0) { 443 return mTaskHistory.get(size - 1); 444 } 445 return null; 446 } 447 448 TaskRecord taskForIdLocked(int id) { 449 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 450 final TaskRecord task = mTaskHistory.get(taskNdx); 451 if (task.taskId == id) { 452 return task; 453 } 454 } 455 return null; 456 } 457 458 ActivityRecord isInStackLocked(IBinder token) { 459 final ActivityRecord r = ActivityRecord.forToken(token); 460 if (r != null) { 461 final TaskRecord task = r.task; 462 if (task != null && task.mActivities.contains(r) && mTaskHistory.contains(task)) { 463 if (task.stack != this) Slog.w(TAG, 464 "Illegal state! task does not point to stack it is in."); 465 return r; 466 } 467 } 468 return null; 469 } 470 471 final boolean updateLRUListLocked(ActivityRecord r) { 472 final boolean hadit = mLRUActivities.remove(r); 473 mLRUActivities.add(r); 474 return hadit; 475 } 476 477 final boolean isHomeStack() { 478 return mStackId == HOME_STACK_ID; 479 } 480 481 final boolean isOnHomeDisplay() { 482 return isAttached() && 483 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 484 } 485 486 final void moveToFront() { 487 if (isAttached()) { 488 if (isOnHomeDisplay()) { 489 mStackSupervisor.moveHomeStack(isHomeStack()); 490 } 491 mStacks.remove(this); 492 mStacks.add(this); 493 } 494 } 495 496 final boolean isAttached() { 497 return mStacks != null; 498 } 499 500 /** 501 * Returns the top activity in any existing task matching the given 502 * Intent. Returns null if no such task is found. 503 */ 504 ActivityRecord findTaskLocked(ActivityRecord target) { 505 Intent intent = target.intent; 506 ActivityInfo info = target.info; 507 ComponentName cls = intent.getComponent(); 508 if (info.targetActivity != null) { 509 cls = new ComponentName(info.packageName, info.targetActivity); 510 } 511 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 512 boolean isDocument = intent != null & intent.isDocument(); 513 // If documentData is non-null then it must match the existing task data. 514 Uri documentData = isDocument ? intent.getData() : null; 515 516 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 517 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 518 final TaskRecord task = mTaskHistory.get(taskNdx); 519 if (task.voiceSession != null) { 520 // We never match voice sessions; those always run independently. 521 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 522 continue; 523 } 524 if (task.userId != userId) { 525 // Looking for a different task. 526 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 527 continue; 528 } 529 final ActivityRecord r = task.getTopActivity(); 530 if (r == null || r.finishing || r.userId != userId || 531 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 532 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 533 continue; 534 } 535 536 final Intent taskIntent = task.intent; 537 final Intent affinityIntent = task.affinityIntent; 538 final boolean taskIsDocument; 539 final Uri taskDocumentData; 540 if (taskIntent != null && taskIntent.isDocument()) { 541 taskIsDocument = true; 542 taskDocumentData = taskIntent.getData(); 543 } else if (affinityIntent != null && affinityIntent.isDocument()) { 544 taskIsDocument = true; 545 taskDocumentData = affinityIntent.getData(); 546 } else { 547 taskIsDocument = false; 548 taskDocumentData = null; 549 } 550 551 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 552 + taskIntent.getComponent().flattenToShortString() 553 + "/aff=" + r.task.rootAffinity + " to new cls=" 554 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 555 if (!isDocument && !taskIsDocument && task.rootAffinity != null) { 556 if (task.rootAffinity.equals(target.taskAffinity)) { 557 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 558 return r; 559 } 560 } else if (taskIntent != null && taskIntent.getComponent() != null && 561 taskIntent.getComponent().compareTo(cls) == 0 && 562 Objects.equals(documentData, taskDocumentData)) { 563 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 564 //dump(); 565 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 566 + r.intent); 567 return r; 568 } else if (affinityIntent != null && affinityIntent.getComponent() != null && 569 affinityIntent.getComponent().compareTo(cls) == 0 && 570 Objects.equals(documentData, taskDocumentData)) { 571 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 572 //dump(); 573 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 574 + r.intent); 575 return r; 576 } else if (DEBUG_TASKS) { 577 Slog.d(TAG, "Not a match: " + task); 578 } 579 } 580 581 return null; 582 } 583 584 /** 585 * Returns the first activity (starting from the top of the stack) that 586 * is the same as the given activity. Returns null if no such activity 587 * is found. 588 */ 589 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 590 ComponentName cls = intent.getComponent(); 591 if (info.targetActivity != null) { 592 cls = new ComponentName(info.packageName, info.targetActivity); 593 } 594 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 595 596 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 597 TaskRecord task = mTaskHistory.get(taskNdx); 598 if (!isCurrentProfileLocked(task.userId)) { 599 return null; 600 } 601 final ArrayList<ActivityRecord> activities = task.mActivities; 602 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 603 ActivityRecord r = activities.get(activityNdx); 604 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 605 //Slog.i(TAG, "Found matching class!"); 606 //dump(); 607 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 608 return r; 609 } 610 } 611 } 612 613 return null; 614 } 615 616 /* 617 * Move the activities around in the stack to bring a user to the foreground. 618 */ 619 final void switchUserLocked(int userId) { 620 if (mCurrentUser == userId) { 621 return; 622 } 623 mCurrentUser = userId; 624 625 // Move userId's tasks to the top. 626 int index = mTaskHistory.size(); 627 for (int i = 0; i < index; ) { 628 TaskRecord task = mTaskHistory.get(i); 629 if (isCurrentProfileLocked(task.userId)) { 630 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 631 " moving " + task + " to top"); 632 mTaskHistory.remove(i); 633 mTaskHistory.add(task); 634 --index; 635 // Use same value for i. 636 } else { 637 ++i; 638 } 639 } 640 if (VALIDATE_TOKENS) { 641 validateAppTokensLocked(); 642 } 643 } 644 645 void minimalResumeActivityLocked(ActivityRecord r) { 646 r.state = ActivityState.RESUMED; 647 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 648 + " (starting new instance)"); 649 r.stopped = false; 650 mResumedActivity = r; 651 r.task.touchActiveTime(); 652 mService.addRecentTaskLocked(r.task); 653 completeResumeLocked(r); 654 mStackSupervisor.checkReadyForSleepLocked(); 655 setLaunchTime(r); 656 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 657 } 658 659 private void startLaunchTraces() { 660 if (mFullyDrawnStartTime != 0) { 661 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 662 } 663 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 664 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 665 } 666 667 private void stopFullyDrawnTraceIfNeeded() { 668 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 669 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 670 mFullyDrawnStartTime = 0; 671 } 672 } 673 674 void setLaunchTime(ActivityRecord r) { 675 if (r.displayStartTime == 0) { 676 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 677 if (mLaunchStartTime == 0) { 678 startLaunchTraces(); 679 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 680 } 681 } else if (mLaunchStartTime == 0) { 682 startLaunchTraces(); 683 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 684 } 685 } 686 687 void clearLaunchTime(ActivityRecord r) { 688 // Make sure that there is no activity waiting for this to launch. 689 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 690 r.displayStartTime = r.fullyDrawnStartTime = 0; 691 } else { 692 mStackSupervisor.removeTimeoutsForActivityLocked(r); 693 mStackSupervisor.scheduleIdleTimeoutLocked(r); 694 } 695 } 696 697 void awakeFromSleepingLocked() { 698 // Ensure activities are no longer sleeping. 699 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 700 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 701 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 702 activities.get(activityNdx).setSleeping(false); 703 } 704 } 705 } 706 707 /** 708 * @return true if something must be done before going to sleep. 709 */ 710 boolean checkReadyForSleepLocked() { 711 if (mResumedActivity != null) { 712 // Still have something resumed; can't sleep until it is paused. 713 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 714 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 715 startPausingLocked(false, true, false, false); 716 return true; 717 } 718 if (mPausingActivity != null) { 719 // Still waiting for something to pause; can't sleep yet. 720 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 721 return true; 722 } 723 724 return false; 725 } 726 727 void goToSleep() { 728 ensureActivitiesVisibleLocked(null, 0); 729 730 // Make sure any stopped but visible activities are now sleeping. 731 // This ensures that the activity's onStop() is called. 732 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 733 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 734 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 735 final ActivityRecord r = activities.get(activityNdx); 736 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 737 r.setSleeping(true); 738 } 739 } 740 } 741 } 742 743 /** 744 * This resets the saved state from the last screenshot, forcing a new screenshot to be taken 745 * again when requested. 746 */ 747 private void invalidateLastScreenshot() { 748 mLastScreenshotActivity = null; 749 if (mLastScreenshotBitmap != null) { 750 mLastScreenshotBitmap.recycle(); 751 } 752 mLastScreenshotBitmap = null; 753 } 754 755 public final Bitmap screenshotActivities(ActivityRecord who) { 756 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "screenshotActivities: " + who); 757 if (who.noDisplay) { 758 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tNo display"); 759 return null; 760 } 761 762 if (isHomeStack()) { 763 // This is an optimization -- since we never show Home or Recents within Recents itself, 764 // we can just go ahead and skip taking the screenshot if this is the home stack. In 765 // the case where the most recent task is not the task that was supplied, then the stack 766 // has changed, so invalidate the last screenshot(). 767 invalidateLastScreenshot(); 768 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tIs Home stack? " + isHomeStack()); 769 return null; 770 } 771 772 int w = mService.mThumbnailWidth; 773 int h = mService.mThumbnailHeight; 774 if (w > 0) { 775 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 776 || mLastScreenshotActivity.state == ActivityState.RESUMED 777 || mLastScreenshotBitmap.getWidth() != w 778 || mLastScreenshotBitmap.getHeight() != h) { 779 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tUpdating screenshot"); 780 mLastScreenshotActivity = who; 781 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 782 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 783 } 784 if (mLastScreenshotBitmap != null) { 785 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tReusing last screenshot"); 786 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 787 } 788 } 789 Slog.e(TAG, "Invalid thumbnail dimensions: " + w + "x" + h); 790 return null; 791 } 792 793 /** 794 * Start pausing the currently resumed activity. It is an error to call this if there 795 * is already an activity being paused or there is no resumed activity. 796 * 797 * @param userLeaving True if this should result in an onUserLeaving to the current activity. 798 * @param uiSleeping True if this is happening with the user interface going to sleep (the 799 * screen turning off). 800 * @param resuming True if this is being called as part of resuming the top activity, so 801 * we shouldn't try to instigate a resume here. 802 * @param dontWait True if the caller does not want to wait for the pause to complete. If 803 * set to true, we will immediately complete the pause here before returning. 804 * @return Returns true if an activity now is in the PAUSING state, and we are waiting for 805 * it to tell us when it is done. 806 */ 807 final boolean startPausingLocked(boolean userLeaving, boolean uiSleeping, boolean resuming, 808 boolean dontWait) { 809 if (mPausingActivity != null) { 810 Slog.wtf(TAG, "Going to pause when pause is already pending for " + mPausingActivity); 811 completePauseLocked(false); 812 } 813 ActivityRecord prev = mResumedActivity; 814 if (prev == null) { 815 if (!resuming) { 816 Slog.wtf(TAG, "Trying to pause when nothing is resumed"); 817 mStackSupervisor.resumeTopActivitiesLocked(); 818 } 819 return false; 820 } 821 822 if (mActivityContainer.mParentActivity == null) { 823 // Top level stack, not a child. Look for child stacks. 824 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping, resuming, dontWait); 825 } 826 827 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 828 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 829 mResumedActivity = null; 830 mPausingActivity = prev; 831 mLastPausedActivity = prev; 832 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 833 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 834 prev.state = ActivityState.PAUSING; 835 prev.task.touchActiveTime(); 836 clearLaunchTime(prev); 837 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 838 if (mService.mHasRecents && (next == null || next.noDisplay || next.task != prev.task)) { 839 prev.updateThumbnail(screenshotActivities(prev), null); 840 } 841 stopFullyDrawnTraceIfNeeded(); 842 843 mService.updateCpuStats(); 844 845 if (prev.app != null && prev.app.thread != null) { 846 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 847 try { 848 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 849 prev.userId, System.identityHashCode(prev), 850 prev.shortComponentName); 851 mService.updateUsageStats(prev, false); 852 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 853 userLeaving, prev.configChangeFlags, dontWait); 854 } catch (Exception e) { 855 // Ignore exception, if process died other code will cleanup. 856 Slog.w(TAG, "Exception thrown during pause", e); 857 mPausingActivity = null; 858 mLastPausedActivity = null; 859 mLastNoHistoryActivity = null; 860 } 861 } else { 862 mPausingActivity = null; 863 mLastPausedActivity = null; 864 mLastNoHistoryActivity = null; 865 } 866 867 // If we are not going to sleep, we want to ensure the device is 868 // awake until the next activity is started. 869 if (!mService.isSleepingOrShuttingDown()) { 870 mStackSupervisor.acquireLaunchWakelock(); 871 } 872 873 if (mPausingActivity != null) { 874 // Have the window manager pause its key dispatching until the new 875 // activity has started. If we're pausing the activity just because 876 // the screen is being turned off and the UI is sleeping, don't interrupt 877 // key dispatch; the same activity will pick it up again on wakeup. 878 if (!uiSleeping) { 879 prev.pauseKeyDispatchingLocked(); 880 } else { 881 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 882 } 883 884 if (dontWait) { 885 // If the caller said they don't want to wait for the pause, then complete 886 // the pause now. 887 completePauseLocked(false); 888 return false; 889 890 } else { 891 // Schedule a pause timeout in case the app doesn't respond. 892 // We don't give it much time because this directly impacts the 893 // responsiveness seen by the user. 894 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 895 msg.obj = prev; 896 prev.pauseTime = SystemClock.uptimeMillis(); 897 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 898 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 899 return true; 900 } 901 902 } else { 903 // This activity failed to schedule the 904 // pause, so just treat it as being paused now. 905 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 906 if (!resuming) { 907 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 908 } 909 return false; 910 } 911 } 912 913 final void activityPausedLocked(IBinder token, boolean timeout) { 914 if (DEBUG_PAUSE) Slog.v( 915 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 916 917 final ActivityRecord r = isInStackLocked(token); 918 if (r != null) { 919 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 920 if (mPausingActivity == r) { 921 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 922 + (timeout ? " (due to timeout)" : " (pause complete)")); 923 completePauseLocked(true); 924 } else { 925 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 926 r.userId, System.identityHashCode(r), r.shortComponentName, 927 mPausingActivity != null 928 ? mPausingActivity.shortComponentName : "(none)"); 929 } 930 } 931 } 932 933 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, 934 PersistableBundle persistentState, CharSequence description) { 935 if (r.state != ActivityState.STOPPING) { 936 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 937 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 938 return; 939 } 940 if (persistentState != null) { 941 r.persistentState = persistentState; 942 mService.notifyTaskPersisterLocked(r.task, false); 943 } 944 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 945 if (icicle != null) { 946 // If icicle is null, this is happening due to a timeout, so we 947 // haven't really saved the state. 948 r.icicle = icicle; 949 r.haveState = true; 950 r.launchCount = 0; 951 r.updateThumbnail(null, description); 952 } 953 if (!r.stopped) { 954 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 955 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 956 r.stopped = true; 957 r.state = ActivityState.STOPPED; 958 if (mActivityContainer.mActivityDisplay.mVisibleBehindActivity == r) { 959 mStackSupervisor.requestVisibleBehindLocked(r, false); 960 } 961 if (r.finishing) { 962 r.clearOptionsLocked(); 963 } else { 964 if (r.configDestroy) { 965 destroyActivityLocked(r, true, "stop-config"); 966 mStackSupervisor.resumeTopActivitiesLocked(); 967 } else { 968 mStackSupervisor.updatePreviousProcessLocked(r); 969 } 970 } 971 } 972 } 973 974 private void completePauseLocked(boolean resumeNext) { 975 ActivityRecord prev = mPausingActivity; 976 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 977 978 if (prev != null) { 979 prev.state = ActivityState.PAUSED; 980 if (prev.finishing) { 981 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 982 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 983 } else if (prev.app != null) { 984 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 985 if (prev.waitingVisible) { 986 prev.waitingVisible = false; 987 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 988 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 989 TAG, "Complete pause, no longer waiting: " + prev); 990 } 991 if (prev.configDestroy) { 992 // The previous is being paused because the configuration 993 // is changing, which means it is actually stopping... 994 // To juggle the fact that we are also starting a new 995 // instance right now, we need to first completely stop 996 // the current instance before starting the new one. 997 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 998 destroyActivityLocked(prev, true, "pause-config"); 999 } else if (!hasVisibleBehindActivity()) { 1000 // If we were visible then resumeTopActivities will release resources before 1001 // stopping. 1002 mStackSupervisor.mStoppingActivities.add(prev); 1003 if (mStackSupervisor.mStoppingActivities.size() > 3 || 1004 prev.frontOfTask && mTaskHistory.size() <= 1) { 1005 // If we already have a few activities waiting to stop, 1006 // then give up on things going idle and start clearing 1007 // them out. Or if r is the last of activity of the last task the stack 1008 // will be empty and must be cleared immediately. 1009 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 1010 mStackSupervisor.scheduleIdleLocked(); 1011 } else { 1012 mStackSupervisor.checkReadyForSleepLocked(); 1013 } 1014 } 1015 } else { 1016 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 1017 prev = null; 1018 } 1019 mPausingActivity = null; 1020 } 1021 1022 if (resumeNext) { 1023 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 1024 if (!mService.isSleepingOrShuttingDown()) { 1025 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 1026 } else { 1027 mStackSupervisor.checkReadyForSleepLocked(); 1028 ActivityRecord top = topStack.topRunningActivityLocked(null); 1029 if (top == null || (prev != null && top != prev)) { 1030 // If there are no more activities available to run, 1031 // do resume anyway to start something. Also if the top 1032 // activity on the stack is not the just paused activity, 1033 // we need to go ahead and resume it to ensure we complete 1034 // an in-flight app switch. 1035 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 1036 } 1037 } 1038 } 1039 1040 if (prev != null) { 1041 prev.resumeKeyDispatchingLocked(); 1042 1043 if (prev.app != null && prev.cpuTimeAtResume > 0 1044 && mService.mBatteryStatsService.isOnBattery()) { 1045 long diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 1046 - prev.cpuTimeAtResume; 1047 if (diff > 0) { 1048 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 1049 synchronized (bsi) { 1050 BatteryStatsImpl.Uid.Proc ps = 1051 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 1052 prev.info.packageName); 1053 if (ps != null) { 1054 ps.addForegroundTimeLocked(diff); 1055 } 1056 } 1057 } 1058 } 1059 prev.cpuTimeAtResume = 0; // reset it 1060 } 1061 } 1062 1063 /** 1064 * Once we know that we have asked an application to put an activity in 1065 * the resumed state (either by launching it or explicitly telling it), 1066 * this function updates the rest of our state to match that fact. 1067 */ 1068 private void completeResumeLocked(ActivityRecord next) { 1069 next.idle = false; 1070 next.results = null; 1071 next.newIntents = null; 1072 1073 if (next.isHomeActivity() && next.isNotResolverActivity()) { 1074 ProcessRecord app = next.task.mActivities.get(0).app; 1075 if (app != null && app != mService.mHomeProcess) { 1076 mService.mHomeProcess = app; 1077 } 1078 } 1079 1080 if (next.nowVisible) { 1081 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1082 mStackSupervisor.notifyActivityDrawnForKeyguard(); 1083 } 1084 1085 // schedule an idle timeout in case the app doesn't do it for us. 1086 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1087 1088 mStackSupervisor.reportResumedActivityLocked(next); 1089 1090 next.resumeKeyDispatchingLocked(); 1091 mNoAnimActivities.clear(); 1092 1093 // Mark the point when the activity is resuming 1094 // TODO: To be more accurate, the mark should be before the onCreate, 1095 // not after the onResume. But for subsequent starts, onResume is fine. 1096 if (next.app != null) { 1097 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1098 } else { 1099 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1100 } 1101 1102 // If we are resuming the activity that we had last screenshotted, then we know it will be 1103 // updated, so invalidate the last screenshot to ensure we take a fresh one when requested 1104 if (next == mLastScreenshotActivity) { 1105 invalidateLastScreenshot(); 1106 } 1107 next.returningOptions = null; 1108 1109 if (mActivityContainer.mActivityDisplay.mVisibleBehindActivity == next) { 1110 // When resuming an activity, require it to call requestVisibleBehind() again. 1111 mActivityContainer.mActivityDisplay.setVisibleBehindActivity(null); 1112 } 1113 } 1114 1115 private void setVisibile(ActivityRecord r, boolean visible) { 1116 r.visible = visible; 1117 mWindowManager.setAppVisibility(r.appToken, visible); 1118 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1119 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1120 ActivityContainer container = containers.get(containerNdx); 1121 container.setVisible(visible); 1122 } 1123 } 1124 1125 // Find the first visible activity above the passed activity and if it is translucent return it 1126 // otherwise return null; 1127 ActivityRecord findNextTranslucentActivity(ActivityRecord r) { 1128 TaskRecord task = r.task; 1129 if (task == null) { 1130 return null; 1131 } 1132 1133 ActivityStack stack = task.stack; 1134 if (stack == null) { 1135 return null; 1136 } 1137 1138 int stackNdx = mStacks.indexOf(stack); 1139 1140 ArrayList<TaskRecord> tasks = stack.mTaskHistory; 1141 int taskNdx = tasks.indexOf(task); 1142 1143 ArrayList<ActivityRecord> activities = task.mActivities; 1144 int activityNdx = activities.indexOf(r) + 1; 1145 1146 final int numStacks = mStacks.size(); 1147 while (stackNdx < numStacks) { 1148 tasks = mStacks.get(stackNdx).mTaskHistory; 1149 final int numTasks = tasks.size(); 1150 while (taskNdx < numTasks) { 1151 activities = tasks.get(taskNdx).mActivities; 1152 final int numActivities = activities.size(); 1153 while (activityNdx < numActivities) { 1154 final ActivityRecord activity = activities.get(activityNdx); 1155 if (!activity.finishing) { 1156 return activity.fullscreen ? null : activity; 1157 } 1158 ++activityNdx; 1159 } 1160 activityNdx = 0; 1161 ++taskNdx; 1162 } 1163 taskNdx = 0; 1164 ++stackNdx; 1165 } 1166 1167 return null; 1168 } 1169 1170 // Checks if any of the stacks above this one has a fullscreen activity behind it. 1171 // If so, this stack is hidden, otherwise it is visible. 1172 private boolean isStackVisible() { 1173 if (!isAttached()) { 1174 return false; 1175 } 1176 1177 if (mStackSupervisor.isFrontStack(this)) { 1178 return true; 1179 } 1180 1181 /** 1182 * Start at the task above this one and go up, looking for a visible 1183 * fullscreen activity, or a translucent activity that requested the 1184 * wallpaper to be shown behind it. 1185 */ 1186 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) { 1187 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks(); 1188 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) { 1189 final TaskRecord task = tasks.get(taskNdx); 1190 final ArrayList<ActivityRecord> activities = task.mActivities; 1191 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) { 1192 final ActivityRecord r = activities.get(activityNdx); 1193 1194 // Conditions for an activity to obscure the stack we're 1195 // examining: 1196 // 1. Not Finishing AND Visible AND: 1197 // 2. Either: 1198 // - Full Screen Activity OR 1199 // - On top of Home and our stack is NOT home 1200 if (!r.finishing && r.visible && (r.fullscreen || 1201 (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()))) { 1202 return false; 1203 } 1204 } 1205 } 1206 } 1207 1208 return true; 1209 } 1210 1211 /** 1212 * Make sure that all activities that need to be visible (that is, they 1213 * currently can be seen by the user) actually are. 1214 */ 1215 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1216 ActivityRecord top = topRunningActivityLocked(null); 1217 if (top == null) { 1218 return; 1219 } 1220 if (DEBUG_VISBILITY) Slog.v( 1221 TAG, "ensureActivitiesVisible behind " + top 1222 + " configChanges=0x" + Integer.toHexString(configChanges)); 1223 1224 if (mTranslucentActivityWaiting != top) { 1225 mUndrawnActivitiesBelowTopTranslucent.clear(); 1226 if (mTranslucentActivityWaiting != null) { 1227 // Call the callback with a timeout indication. 1228 notifyActivityDrawnLocked(null); 1229 mTranslucentActivityWaiting = null; 1230 } 1231 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1232 } 1233 1234 // If the top activity is not fullscreen, then we need to 1235 // make sure any activities under it are now visible. 1236 boolean aboveTop = true; 1237 boolean behindFullscreen = !isStackVisible(); 1238 1239 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1240 final TaskRecord task = mTaskHistory.get(taskNdx); 1241 final ArrayList<ActivityRecord> activities = task.mActivities; 1242 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1243 final ActivityRecord r = activities.get(activityNdx); 1244 if (r.finishing) { 1245 continue; 1246 } 1247 if (aboveTop && r != top) { 1248 continue; 1249 } 1250 aboveTop = false; 1251 // mLaunchingBehind: Activities launching behind are at the back of the task stack 1252 // but must be drawn initially for the animation as though they were visible. 1253 if (!behindFullscreen || r.mLaunchTaskBehind) { 1254 if (DEBUG_VISBILITY) Slog.v( 1255 TAG, "Make visible? " + r + " finishing=" + r.finishing 1256 + " state=" + r.state); 1257 1258 // First: if this is not the current activity being started, make 1259 // sure it matches the current configuration. 1260 if (r != starting) { 1261 ensureActivityConfigurationLocked(r, 0); 1262 } 1263 1264 if (r.app == null || r.app.thread == null) { 1265 // This activity needs to be visible, but isn't even 1266 // running... get it started, but don't resume it 1267 // at this point. 1268 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1269 if (r != starting) { 1270 r.startFreezingScreenLocked(r.app, configChanges); 1271 } 1272 if (!r.visible || r.mLaunchTaskBehind) { 1273 if (DEBUG_VISBILITY) Slog.v( 1274 TAG, "Starting and making visible: " + r); 1275 setVisibile(r, true); 1276 } 1277 if (r != starting) { 1278 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1279 } 1280 1281 } else if (r.visible) { 1282 // If this activity is already visible, then there is nothing 1283 // else to do here. 1284 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1285 r.stopFreezingScreenLocked(false); 1286 try { 1287 if (r.returningOptions != null) { 1288 r.app.thread.scheduleOnNewActivityOptions(r.appToken, 1289 r.returningOptions); 1290 } 1291 } catch(RemoteException e) { 1292 } 1293 } else { 1294 // This activity is not currently visible, but is running. 1295 // Tell it to become visible. 1296 r.visible = true; 1297 if (r.state != ActivityState.RESUMED && r != starting) { 1298 // If this activity is paused, tell it 1299 // to now show its window. 1300 if (DEBUG_VISBILITY) Slog.v( 1301 TAG, "Making visible and scheduling visibility: " + r); 1302 try { 1303 if (mTranslucentActivityWaiting != null) { 1304 r.updateOptionsLocked(r.returningOptions); 1305 mUndrawnActivitiesBelowTopTranslucent.add(r); 1306 } 1307 setVisibile(r, true); 1308 r.sleeping = false; 1309 r.app.pendingUiClean = true; 1310 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1311 r.stopFreezingScreenLocked(false); 1312 } catch (Exception e) { 1313 // Just skip on any failure; we'll make it 1314 // visible when it next restarts. 1315 Slog.w(TAG, "Exception thrown making visibile: " 1316 + r.intent.getComponent(), e); 1317 } 1318 } 1319 } 1320 1321 // Aggregate current change flags. 1322 configChanges |= r.configChangeFlags; 1323 1324 if (r.fullscreen) { 1325 // At this point, nothing else needs to be shown 1326 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1327 behindFullscreen = true; 1328 } else if (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()) { 1329 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1330 behindFullscreen = true; 1331 } 1332 } else { 1333 if (DEBUG_VISBILITY) Slog.v( 1334 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1335 + " state=" + r.state 1336 + " behindFullscreen=" + behindFullscreen); 1337 // Now for any activities that aren't visible to the user, make 1338 // sure they no longer are keeping the screen frozen. 1339 if (r.visible) { 1340 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1341 try { 1342 setVisibile(r, false); 1343 switch (r.state) { 1344 case STOPPING: 1345 case STOPPED: 1346 if (r.app != null && r.app.thread != null) { 1347 if (DEBUG_VISBILITY) Slog.v( 1348 TAG, "Scheduling invisibility: " + r); 1349 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1350 } 1351 break; 1352 1353 case INITIALIZING: 1354 case RESUMED: 1355 case PAUSING: 1356 case PAUSED: 1357 // This case created for transitioning activities from 1358 // translucent to opaque {@link Activity#convertToOpaque}. 1359 if (getVisibleBehindActivity() == r) { 1360 releaseBackgroundResources(); 1361 } else { 1362 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1363 mStackSupervisor.mStoppingActivities.add(r); 1364 } 1365 mStackSupervisor.scheduleIdleLocked(); 1366 } 1367 break; 1368 1369 default: 1370 break; 1371 } 1372 } catch (Exception e) { 1373 // Just skip on any failure; we'll make it 1374 // visible when it next restarts. 1375 Slog.w(TAG, "Exception thrown making hidden: " 1376 + r.intent.getComponent(), e); 1377 } 1378 } else { 1379 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1380 } 1381 } 1382 } 1383 } 1384 1385 if (mTranslucentActivityWaiting != null && 1386 mUndrawnActivitiesBelowTopTranslucent.isEmpty()) { 1387 // Nothing is getting drawn or everything was already visible, don't wait for timeout. 1388 notifyActivityDrawnLocked(null); 1389 } 1390 } 1391 1392 void convertToTranslucent(ActivityRecord r) { 1393 mTranslucentActivityWaiting = r; 1394 mUndrawnActivitiesBelowTopTranslucent.clear(); 1395 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1396 } 1397 1398 /** 1399 * Called as activities below the top translucent activity are redrawn. When the last one is 1400 * redrawn notify the top activity by calling 1401 * {@link Activity#onTranslucentConversionComplete}. 1402 * 1403 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1404 * occurred and the activity will be notified immediately. 1405 */ 1406 void notifyActivityDrawnLocked(ActivityRecord r) { 1407 mActivityContainer.setDrawn(); 1408 if ((r == null) 1409 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1410 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1411 // The last undrawn activity below the top has just been drawn. If there is an 1412 // opaque activity at the top, notify it that it can become translucent safely now. 1413 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1414 mTranslucentActivityWaiting = null; 1415 mUndrawnActivitiesBelowTopTranslucent.clear(); 1416 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1417 1418 if (waitingActivity != null) { 1419 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1420 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1421 try { 1422 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1423 waitingActivity.appToken, r != null); 1424 } catch (RemoteException e) { 1425 } 1426 } 1427 } 1428 } 1429 } 1430 1431 /** If any activities below the top running one are in the INITIALIZING state and they have a 1432 * starting window displayed then remove that starting window. It is possible that the activity 1433 * in this state will never resumed in which case that starting window will be orphaned. */ 1434 void cancelInitializingActivities() { 1435 final ActivityRecord topActivity = topRunningActivityLocked(null); 1436 boolean aboveTop = true; 1437 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1438 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1439 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1440 final ActivityRecord r = activities.get(activityNdx); 1441 if (aboveTop) { 1442 if (r == topActivity) { 1443 aboveTop = false; 1444 } 1445 continue; 1446 } 1447 1448 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1449 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1450 r.mStartingWindowShown = false; 1451 mWindowManager.removeAppStartingWindow(r.appToken); 1452 } 1453 } 1454 } 1455 } 1456 1457 /** 1458 * Ensure that the top activity in the stack is resumed. 1459 * 1460 * @param prev The previously resumed activity, for when in the process 1461 * of pausing; can be null to call from elsewhere. 1462 * 1463 * @return Returns true if something is being resumed, or false if 1464 * nothing happened. 1465 */ 1466 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1467 return resumeTopActivityLocked(prev, null); 1468 } 1469 1470 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1471 if (inResumeTopActivity) { 1472 // Don't even start recursing. 1473 return false; 1474 } 1475 1476 boolean result = false; 1477 try { 1478 // Protect against recursion. 1479 inResumeTopActivity = true; 1480 result = resumeTopActivityInnerLocked(prev, options); 1481 } finally { 1482 inResumeTopActivity = false; 1483 } 1484 return result; 1485 } 1486 1487 final boolean resumeTopActivityInnerLocked(ActivityRecord prev, Bundle options) { 1488 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1489 1490 if (!mService.mBooting && !mService.mBooted) { 1491 // Not ready yet! 1492 return false; 1493 } 1494 1495 ActivityRecord parent = mActivityContainer.mParentActivity; 1496 if ((parent != null && parent.state != ActivityState.RESUMED) || 1497 !mActivityContainer.isAttachedLocked()) { 1498 // Do not resume this stack if its parent is not resumed. 1499 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1500 return false; 1501 } 1502 1503 cancelInitializingActivities(); 1504 1505 // Find the first activity that is not finishing. 1506 ActivityRecord next = topRunningActivityLocked(null); 1507 1508 // Remember how we'll process this pause/resume situation, and ensure 1509 // that the state is reset however we wind up proceeding. 1510 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1511 mStackSupervisor.mUserLeaving = false; 1512 1513 final TaskRecord prevTask = prev != null ? prev.task : null; 1514 if (next == null) { 1515 // There are no more activities! Let's just start up the 1516 // Launcher... 1517 ActivityOptions.abort(options); 1518 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1519 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1520 // Only resume home if on home display 1521 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1522 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1523 return isOnHomeDisplay() && 1524 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1525 } 1526 1527 next.delayedResume = false; 1528 1529 // If the top activity is the resumed one, nothing to do. 1530 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1531 mStackSupervisor.allResumedActivitiesComplete()) { 1532 // Make sure we have executed any pending transitions, since there 1533 // should be nothing left to do at this point. 1534 mWindowManager.executeAppTransition(); 1535 mNoAnimActivities.clear(); 1536 ActivityOptions.abort(options); 1537 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1538 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1539 1540 // Make sure to notify Keyguard as well if it is waiting for an activity to be drawn. 1541 mStackSupervisor.notifyActivityDrawnForKeyguard(); 1542 return false; 1543 } 1544 1545 final TaskRecord nextTask = next.task; 1546 if (prevTask != null && prevTask.stack == this && 1547 prevTask.isOverHomeStack() && prev.finishing && prev.frontOfTask) { 1548 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1549 if (prevTask == nextTask) { 1550 prevTask.setFrontOfTask(); 1551 } else if (prevTask != topTask()) { 1552 // This task is going away but it was supposed to return to the home stack. 1553 // Now the task above it has to return to the home task instead. 1554 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1555 mTaskHistory.get(taskNdx).setTaskToReturnTo(HOME_ACTIVITY_TYPE); 1556 } else { 1557 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1558 "resumeTopActivityLocked: Launching home next"); 1559 // Only resume home if on home display 1560 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1561 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1562 return isOnHomeDisplay() && 1563 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1564 } 1565 } 1566 1567 // If we are sleeping, and there is no resumed activity, and the top 1568 // activity is paused, well that is the state we want. 1569 if (mService.isSleepingOrShuttingDown() 1570 && mLastPausedActivity == next 1571 && mStackSupervisor.allPausedActivitiesComplete()) { 1572 // Make sure we have executed any pending transitions, since there 1573 // should be nothing left to do at this point. 1574 mWindowManager.executeAppTransition(); 1575 mNoAnimActivities.clear(); 1576 ActivityOptions.abort(options); 1577 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1578 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1579 return false; 1580 } 1581 1582 // Make sure that the user who owns this activity is started. If not, 1583 // we will just leave it as is because someone should be bringing 1584 // another user's activities to the top of the stack. 1585 if (mService.mStartedUsers.get(next.userId) == null) { 1586 Slog.w(TAG, "Skipping resume of top activity " + next 1587 + ": user " + next.userId + " is stopped"); 1588 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1589 return false; 1590 } 1591 1592 // The activity may be waiting for stop, but that is no longer 1593 // appropriate for it. 1594 mStackSupervisor.mStoppingActivities.remove(next); 1595 mStackSupervisor.mGoingToSleepActivities.remove(next); 1596 next.sleeping = false; 1597 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1598 1599 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1600 1601 // If we are currently pausing an activity, then don't do anything 1602 // until that is done. 1603 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1604 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1605 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1606 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1607 return false; 1608 } 1609 1610 // Okay we are now going to start a switch, to 'next'. We may first 1611 // have to pause the current activity, but this is an important point 1612 // where we have decided to go to 'next' so keep track of that. 1613 // XXX "App Redirected" dialog is getting too many false positives 1614 // at this point, so turn off for now. 1615 if (false) { 1616 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1617 long now = SystemClock.uptimeMillis(); 1618 final boolean inTime = mLastStartedActivity.startTime != 0 1619 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1620 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1621 final int nextUid = next.info.applicationInfo.uid; 1622 if (inTime && lastUid != nextUid 1623 && lastUid != next.launchedFromUid 1624 && mService.checkPermission( 1625 android.Manifest.permission.STOP_APP_SWITCHES, 1626 -1, next.launchedFromUid) 1627 != PackageManager.PERMISSION_GRANTED) { 1628 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1629 } else { 1630 next.startTime = now; 1631 mLastStartedActivity = next; 1632 } 1633 } else { 1634 next.startTime = SystemClock.uptimeMillis(); 1635 mLastStartedActivity = next; 1636 } 1637 } 1638 1639 // We need to start pausing the current activity so the top one 1640 // can be resumed... 1641 boolean dontWaitForPause = (next.info.flags&ActivityInfo.FLAG_RESUME_WHILE_PAUSING) != 0; 1642 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving, true, dontWaitForPause); 1643 if (mResumedActivity != null) { 1644 pausing |= startPausingLocked(userLeaving, false, true, dontWaitForPause); 1645 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1646 } 1647 if (pausing) { 1648 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1649 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1650 // At this point we want to put the upcoming activity's process 1651 // at the top of the LRU list, since we know we will be needing it 1652 // very soon and it would be a waste to let it get killed if it 1653 // happens to be sitting towards the end. 1654 if (next.app != null && next.app.thread != null) { 1655 mService.updateLruProcessLocked(next.app, true, null); 1656 } 1657 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1658 return true; 1659 } 1660 1661 // If the most recent activity was noHistory but was only stopped rather 1662 // than stopped+finished because the device went to sleep, we need to make 1663 // sure to finish it as we're making a new activity topmost. 1664 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1665 !mLastNoHistoryActivity.finishing) { 1666 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1667 " on new resume"); 1668 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1669 null, "no-history", false); 1670 mLastNoHistoryActivity = null; 1671 } 1672 1673 if (prev != null && prev != next) { 1674 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1675 prev.waitingVisible = true; 1676 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1677 if (DEBUG_SWITCH) Slog.v( 1678 TAG, "Resuming top, waiting visible to hide: " + prev); 1679 } else { 1680 // The next activity is already visible, so hide the previous 1681 // activity's windows right now so we can show the new one ASAP. 1682 // We only do this if the previous is finishing, which should mean 1683 // it is on top of the one being resumed so hiding it quickly 1684 // is good. Otherwise, we want to do the normal route of allowing 1685 // the resumed activity to be shown so we can decide if the 1686 // previous should actually be hidden depending on whether the 1687 // new one is found to be full-screen or not. 1688 if (prev.finishing) { 1689 mWindowManager.setAppVisibility(prev.appToken, false); 1690 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1691 + prev + ", waitingVisible=" 1692 + (prev != null ? prev.waitingVisible : null) 1693 + ", nowVisible=" + next.nowVisible); 1694 } else { 1695 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1696 + prev + ", waitingVisible=" 1697 + (prev != null ? prev.waitingVisible : null) 1698 + ", nowVisible=" + next.nowVisible); 1699 } 1700 } 1701 } 1702 1703 // Launching this app's activity, make sure the app is no longer 1704 // considered stopped. 1705 try { 1706 AppGlobals.getPackageManager().setPackageStoppedState( 1707 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1708 } catch (RemoteException e1) { 1709 } catch (IllegalArgumentException e) { 1710 Slog.w(TAG, "Failed trying to unstop package " 1711 + next.packageName + ": " + e); 1712 } 1713 1714 // We are starting up the next activity, so tell the window manager 1715 // that the previous one will be hidden soon. This way it can know 1716 // to ignore it when computing the desired screen orientation. 1717 boolean anim = true; 1718 if (prev != null) { 1719 if (prev.finishing) { 1720 if (DEBUG_TRANSITION) Slog.v(TAG, 1721 "Prepare close transition: prev=" + prev); 1722 if (mNoAnimActivities.contains(prev)) { 1723 anim = false; 1724 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1725 } else { 1726 mWindowManager.prepareAppTransition(prev.task == next.task 1727 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1728 : AppTransition.TRANSIT_TASK_CLOSE, false); 1729 } 1730 mWindowManager.setAppWillBeHidden(prev.appToken); 1731 mWindowManager.setAppVisibility(prev.appToken, false); 1732 } else { 1733 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1734 if (mNoAnimActivities.contains(next)) { 1735 anim = false; 1736 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1737 } else { 1738 mWindowManager.prepareAppTransition(prev.task == next.task 1739 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1740 : next.mLaunchTaskBehind 1741 ? AppTransition.TRANSIT_TASK_OPEN_BEHIND 1742 : AppTransition.TRANSIT_TASK_OPEN, false); 1743 } 1744 } 1745 if (false) { 1746 mWindowManager.setAppWillBeHidden(prev.appToken); 1747 mWindowManager.setAppVisibility(prev.appToken, false); 1748 } 1749 } else { 1750 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1751 if (mNoAnimActivities.contains(next)) { 1752 anim = false; 1753 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1754 } else { 1755 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1756 } 1757 } 1758 1759 Bundle resumeAnimOptions = null; 1760 if (anim) { 1761 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1762 if (opts != null) { 1763 resumeAnimOptions = opts.toBundle(); 1764 } 1765 next.applyOptionsLocked(); 1766 } else { 1767 next.clearOptionsLocked(); 1768 } 1769 1770 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1771 if (next.app != null && next.app.thread != null) { 1772 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1773 1774 // This activity is now becoming visible. 1775 mWindowManager.setAppVisibility(next.appToken, true); 1776 1777 // schedule launch ticks to collect information about slow apps. 1778 next.startLaunchTickingLocked(); 1779 1780 ActivityRecord lastResumedActivity = 1781 lastStack == null ? null :lastStack.mResumedActivity; 1782 ActivityState lastState = next.state; 1783 1784 mService.updateCpuStats(); 1785 1786 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1787 next.state = ActivityState.RESUMED; 1788 mResumedActivity = next; 1789 next.task.touchActiveTime(); 1790 mService.addRecentTaskLocked(next.task); 1791 mService.updateLruProcessLocked(next.app, true, null); 1792 updateLRUListLocked(next); 1793 mService.updateOomAdjLocked(); 1794 1795 // Have the window manager re-evaluate the orientation of 1796 // the screen based on the new activity order. 1797 boolean notUpdated = true; 1798 if (mStackSupervisor.isFrontStack(this)) { 1799 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1800 mService.mConfiguration, 1801 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1802 if (config != null) { 1803 next.frozenBeforeDestroy = true; 1804 } 1805 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1806 } 1807 1808 if (notUpdated) { 1809 // The configuration update wasn't able to keep the existing 1810 // instance of the activity, and instead started a new one. 1811 // We should be all done, but let's just make sure our activity 1812 // is still at the top and schedule another run if something 1813 // weird happened. 1814 ActivityRecord nextNext = topRunningActivityLocked(null); 1815 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1816 "Activity config changed during resume: " + next 1817 + ", new next: " + nextNext); 1818 if (nextNext != next) { 1819 // Do over! 1820 mStackSupervisor.scheduleResumeTopActivities(); 1821 } 1822 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1823 mNoAnimActivities.clear(); 1824 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1825 return true; 1826 } 1827 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1828 return false; 1829 } 1830 1831 try { 1832 // Deliver all pending results. 1833 ArrayList<ResultInfo> a = next.results; 1834 if (a != null) { 1835 final int N = a.size(); 1836 if (!next.finishing && N > 0) { 1837 if (DEBUG_RESULTS) Slog.v( 1838 TAG, "Delivering results to " + next 1839 + ": " + a); 1840 next.app.thread.scheduleSendResult(next.appToken, a); 1841 } 1842 } 1843 1844 if (next.newIntents != null) { 1845 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1846 } 1847 1848 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1849 next.userId, System.identityHashCode(next), 1850 next.task.taskId, next.shortComponentName); 1851 1852 next.sleeping = false; 1853 mService.showAskCompatModeDialogLocked(next); 1854 next.app.pendingUiClean = true; 1855 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1856 next.clearOptionsLocked(); 1857 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1858 mService.isNextTransitionForward(), resumeAnimOptions); 1859 1860 mStackSupervisor.checkReadyForSleepLocked(); 1861 1862 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1863 } catch (Exception e) { 1864 // Whoops, need to restart this activity! 1865 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1866 + lastState + ": " + next); 1867 next.state = lastState; 1868 if (lastStack != null) { 1869 lastStack.mResumedActivity = lastResumedActivity; 1870 } 1871 Slog.i(TAG, "Restarting because process died: " + next); 1872 if (!next.hasBeenLaunched) { 1873 next.hasBeenLaunched = true; 1874 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1875 mStackSupervisor.isFrontStack(lastStack)) { 1876 mWindowManager.setAppStartingWindow( 1877 next.appToken, next.packageName, next.theme, 1878 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1879 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1880 next.windowFlags, null, true); 1881 } 1882 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1883 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1884 return true; 1885 } 1886 1887 // From this point on, if something goes wrong there is no way 1888 // to recover the activity. 1889 try { 1890 next.visible = true; 1891 completeResumeLocked(next); 1892 } catch (Exception e) { 1893 // If any exception gets thrown, toss away this 1894 // activity and try the next one. 1895 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1896 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1897 "resume-exception", true); 1898 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1899 return true; 1900 } 1901 next.stopped = false; 1902 1903 } else { 1904 // Whoops, need to restart this activity! 1905 if (!next.hasBeenLaunched) { 1906 next.hasBeenLaunched = true; 1907 } else { 1908 if (SHOW_APP_STARTING_PREVIEW) { 1909 mWindowManager.setAppStartingWindow( 1910 next.appToken, next.packageName, next.theme, 1911 mService.compatibilityInfoForPackageLocked( 1912 next.info.applicationInfo), 1913 next.nonLocalizedLabel, 1914 next.labelRes, next.icon, next.logo, next.windowFlags, 1915 null, true); 1916 } 1917 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1918 } 1919 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1920 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1921 } 1922 1923 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1924 return true; 1925 } 1926 1927 private void insertTaskAtTop(TaskRecord task) { 1928 // If this is being moved to the top by another activity or being launched from the home 1929 // activity, set mOnTopOfHome accordingly. 1930 if (isOnHomeDisplay()) { 1931 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1932 final boolean fromHome = lastStack.isHomeStack(); 1933 if (!isHomeStack() && (fromHome || topTask() != task)) { 1934 task.setTaskToReturnTo(fromHome 1935 ? lastStack.topTask() == null 1936 ? HOME_ACTIVITY_TYPE 1937 : lastStack.topTask().taskType 1938 : APPLICATION_ACTIVITY_TYPE); 1939 } 1940 } else { 1941 task.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 1942 } 1943 1944 mTaskHistory.remove(task); 1945 // Now put task at top. 1946 int taskNdx = mTaskHistory.size(); 1947 if (!isCurrentProfileLocked(task.userId)) { 1948 // Put non-current user tasks below current user tasks. 1949 while (--taskNdx >= 0) { 1950 if (!isCurrentProfileLocked(mTaskHistory.get(taskNdx).userId)) { 1951 break; 1952 } 1953 } 1954 ++taskNdx; 1955 } 1956 mTaskHistory.add(taskNdx, task); 1957 updateTaskMovement(task, true); 1958 } 1959 1960 final void startActivityLocked(ActivityRecord r, boolean newTask, 1961 boolean doResume, boolean keepCurTransition, Bundle options) { 1962 TaskRecord rTask = r.task; 1963 final int taskId = rTask.taskId; 1964 // mLaunchTaskBehind tasks get placed at the back of the task stack. 1965 if (!r.mLaunchTaskBehind && (taskForIdLocked(taskId) == null || newTask)) { 1966 // Last activity in task had been removed or ActivityManagerService is reusing task. 1967 // Insert or replace. 1968 // Might not even be in. 1969 insertTaskAtTop(rTask); 1970 mWindowManager.moveTaskToTop(taskId); 1971 } 1972 TaskRecord task = null; 1973 if (!newTask) { 1974 // If starting in an existing task, find where that is... 1975 boolean startIt = true; 1976 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1977 task = mTaskHistory.get(taskNdx); 1978 if (task.getTopActivity() == null) { 1979 // All activities in task are finishing. 1980 continue; 1981 } 1982 if (task == r.task) { 1983 // Here it is! Now, if this is not yet visible to the 1984 // user, then just add it without starting; it will 1985 // get started when the user navigates back to it. 1986 if (!startIt) { 1987 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1988 + task, new RuntimeException("here").fillInStackTrace()); 1989 task.addActivityToTop(r); 1990 r.putInHistory(); 1991 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1992 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1993 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1994 r.userId, r.info.configChanges, task.voiceSession != null, 1995 r.mLaunchTaskBehind); 1996 if (VALIDATE_TOKENS) { 1997 validateAppTokensLocked(); 1998 } 1999 ActivityOptions.abort(options); 2000 return; 2001 } 2002 break; 2003 } else if (task.numFullscreen > 0) { 2004 startIt = false; 2005 } 2006 } 2007 } 2008 2009 // Place a new activity at top of stack, so it is next to interact 2010 // with the user. 2011 2012 // If we are not placing the new activity frontmost, we do not want 2013 // to deliver the onUserLeaving callback to the actual frontmost 2014 // activity 2015 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 2016 mStackSupervisor.mUserLeaving = false; 2017 if (DEBUG_USER_LEAVING) Slog.v(TAG, 2018 "startActivity() behind front, mUserLeaving=false"); 2019 } 2020 2021 task = r.task; 2022 2023 // Slot the activity into the history stack and proceed 2024 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 2025 new RuntimeException("here").fillInStackTrace()); 2026 task.addActivityToTop(r); 2027 task.setFrontOfTask(); 2028 2029 r.putInHistory(); 2030 if (!isHomeStack() || numActivities() > 0) { 2031 // We want to show the starting preview window if we are 2032 // switching to a new task, or the next activity's process is 2033 // not currently running. 2034 boolean showStartingIcon = newTask; 2035 ProcessRecord proc = r.app; 2036 if (proc == null) { 2037 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 2038 } 2039 if (proc == null || proc.thread == null) { 2040 showStartingIcon = true; 2041 } 2042 if (DEBUG_TRANSITION) Slog.v(TAG, 2043 "Prepare open transition: starting " + r); 2044 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 2045 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 2046 mNoAnimActivities.add(r); 2047 } else { 2048 mWindowManager.prepareAppTransition(newTask 2049 ? r.mLaunchTaskBehind 2050 ? AppTransition.TRANSIT_TASK_OPEN_BEHIND 2051 : AppTransition.TRANSIT_TASK_OPEN 2052 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 2053 mNoAnimActivities.remove(r); 2054 } 2055 mWindowManager.addAppToken(task.mActivities.indexOf(r), 2056 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 2057 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 2058 r.info.configChanges, task.voiceSession != null, r.mLaunchTaskBehind); 2059 boolean doShow = true; 2060 if (newTask) { 2061 // Even though this activity is starting fresh, we still need 2062 // to reset it to make sure we apply affinities to move any 2063 // existing activities from other tasks in to it. 2064 // If the caller has requested that the target task be 2065 // reset, then do so. 2066 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 2067 resetTaskIfNeededLocked(r, r); 2068 doShow = topRunningNonDelayedActivityLocked(null) == r; 2069 } 2070 } else if (options != null && new ActivityOptions(options).getAnimationType() 2071 == ActivityOptions.ANIM_SCENE_TRANSITION) { 2072 doShow = false; 2073 } 2074 if (r.mLaunchTaskBehind) { 2075 // Don't do a starting window for mLaunchTaskBehind. More importantly make sure we 2076 // tell WindowManager that r is visible even though it is at the back of the stack. 2077 mWindowManager.setAppVisibility(r.appToken, true); 2078 ensureActivitiesVisibleLocked(null, 0); 2079 } else if (SHOW_APP_STARTING_PREVIEW && doShow) { 2080 // Figure out if we are transitioning from another activity that is 2081 // "has the same starting icon" as the next one. This allows the 2082 // window manager to keep the previous window it had previously 2083 // created, if it still had one. 2084 ActivityRecord prev = mResumedActivity; 2085 if (prev != null) { 2086 // We don't want to reuse the previous starting preview if: 2087 // (1) The current activity is in a different task. 2088 if (prev.task != r.task) { 2089 prev = null; 2090 } 2091 // (2) The current activity is already displayed. 2092 else if (prev.nowVisible) { 2093 prev = null; 2094 } 2095 } 2096 mWindowManager.setAppStartingWindow( 2097 r.appToken, r.packageName, r.theme, 2098 mService.compatibilityInfoForPackageLocked( 2099 r.info.applicationInfo), r.nonLocalizedLabel, 2100 r.labelRes, r.icon, r.logo, r.windowFlags, 2101 prev != null ? prev.appToken : null, showStartingIcon); 2102 r.mStartingWindowShown = true; 2103 } 2104 } else { 2105 // If this is the first activity, don't do any fancy animations, 2106 // because there is nothing for it to animate on top of. 2107 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 2108 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 2109 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 2110 r.info.configChanges, task.voiceSession != null, r.mLaunchTaskBehind); 2111 ActivityOptions.abort(options); 2112 options = null; 2113 } 2114 if (VALIDATE_TOKENS) { 2115 validateAppTokensLocked(); 2116 } 2117 2118 if (doResume) { 2119 mStackSupervisor.resumeTopActivitiesLocked(this, r, options); 2120 } 2121 } 2122 2123 final void validateAppTokensLocked() { 2124 mValidateAppTokens.clear(); 2125 mValidateAppTokens.ensureCapacity(numActivities()); 2126 final int numTasks = mTaskHistory.size(); 2127 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 2128 TaskRecord task = mTaskHistory.get(taskNdx); 2129 final ArrayList<ActivityRecord> activities = task.mActivities; 2130 if (activities.isEmpty()) { 2131 continue; 2132 } 2133 TaskGroup group = new TaskGroup(); 2134 group.taskId = task.taskId; 2135 mValidateAppTokens.add(group); 2136 final int numActivities = activities.size(); 2137 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 2138 final ActivityRecord r = activities.get(activityNdx); 2139 group.tokens.add(r.appToken); 2140 } 2141 } 2142 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 2143 } 2144 2145 /** 2146 * Perform a reset of the given task, if needed as part of launching it. 2147 * Returns the new HistoryRecord at the top of the task. 2148 */ 2149 /** 2150 * Helper method for #resetTaskIfNeededLocked. 2151 * We are inside of the task being reset... we'll either finish this activity, push it out 2152 * for another task, or leave it as-is. 2153 * @param task The task containing the Activity (taskTop) that might be reset. 2154 * @param forceReset 2155 * @return An ActivityOptions that needs to be processed. 2156 */ 2157 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 2158 ActivityOptions topOptions = null; 2159 2160 int replyChainEnd = -1; 2161 boolean canMoveOptions = true; 2162 2163 // We only do this for activities that are not the root of the task (since if we finish 2164 // the root, we may no longer have the task!). 2165 final ArrayList<ActivityRecord> activities = task.mActivities; 2166 final int numActivities = activities.size(); 2167 final int rootActivityNdx = task.findEffectiveRootIndex(); 2168 for (int i = numActivities - 1; i > rootActivityNdx; --i ) { 2169 ActivityRecord target = activities.get(i); 2170 if (target.frontOfTask) 2171 break; 2172 2173 final int flags = target.info.flags; 2174 final boolean finishOnTaskLaunch = 2175 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2176 final boolean allowTaskReparenting = 2177 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2178 final boolean clearWhenTaskReset = 2179 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2180 2181 if (!finishOnTaskLaunch 2182 && !clearWhenTaskReset 2183 && target.resultTo != null) { 2184 // If this activity is sending a reply to a previous 2185 // activity, we can't do anything with it now until 2186 // we reach the start of the reply chain. 2187 // XXX note that we are assuming the result is always 2188 // to the previous activity, which is almost always 2189 // the case but we really shouldn't count on. 2190 if (replyChainEnd < 0) { 2191 replyChainEnd = i; 2192 } 2193 } else if (!finishOnTaskLaunch 2194 && !clearWhenTaskReset 2195 && allowTaskReparenting 2196 && target.taskAffinity != null 2197 && !target.taskAffinity.equals(task.affinity)) { 2198 // If this activity has an affinity for another 2199 // task, then we need to move it out of here. We will 2200 // move it as far out of the way as possible, to the 2201 // bottom of the activity stack. This also keeps it 2202 // correctly ordered with any activities we previously 2203 // moved. 2204 final TaskRecord targetTask; 2205 final ActivityRecord bottom = 2206 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2207 mTaskHistory.get(0).mActivities.get(0) : null; 2208 if (bottom != null && target.taskAffinity != null 2209 && target.taskAffinity.equals(bottom.task.affinity)) { 2210 // If the activity currently at the bottom has the 2211 // same task affinity as the one we are moving, 2212 // then merge it into the same task. 2213 targetTask = bottom.task; 2214 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2215 + " out to bottom task " + bottom.task); 2216 } else { 2217 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2218 null, null, null, false); 2219 targetTask.affinityIntent = target.intent; 2220 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2221 + " out to new task " + target.task); 2222 } 2223 2224 final int targetTaskId = targetTask.taskId; 2225 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2226 2227 boolean noOptions = canMoveOptions; 2228 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2229 for (int srcPos = start; srcPos >= i; --srcPos) { 2230 final ActivityRecord p = activities.get(srcPos); 2231 if (p.finishing) { 2232 continue; 2233 } 2234 2235 canMoveOptions = false; 2236 if (noOptions && topOptions == null) { 2237 topOptions = p.takeOptionsLocked(); 2238 if (topOptions != null) { 2239 noOptions = false; 2240 } 2241 } 2242 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2243 + task + " adding to task=" + targetTask 2244 + " Callers=" + Debug.getCallers(4)); 2245 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2246 + " out to target's task " + target.task); 2247 p.setTask(targetTask, null); 2248 targetTask.addActivityAtBottom(p); 2249 2250 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2251 } 2252 2253 mWindowManager.moveTaskToBottom(targetTaskId); 2254 if (VALIDATE_TOKENS) { 2255 validateAppTokensLocked(); 2256 } 2257 2258 replyChainEnd = -1; 2259 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2260 // If the activity should just be removed -- either 2261 // because it asks for it, or the task should be 2262 // cleared -- then finish it and anything that is 2263 // part of its reply chain. 2264 int end; 2265 if (clearWhenTaskReset) { 2266 // In this case, we want to finish this activity 2267 // and everything above it, so be sneaky and pretend 2268 // like these are all in the reply chain. 2269 end = numActivities - 1; 2270 } else if (replyChainEnd < 0) { 2271 end = i; 2272 } else { 2273 end = replyChainEnd; 2274 } 2275 boolean noOptions = canMoveOptions; 2276 for (int srcPos = i; srcPos <= end; srcPos++) { 2277 ActivityRecord p = activities.get(srcPos); 2278 if (p.finishing) { 2279 continue; 2280 } 2281 canMoveOptions = false; 2282 if (noOptions && topOptions == null) { 2283 topOptions = p.takeOptionsLocked(); 2284 if (topOptions != null) { 2285 noOptions = false; 2286 } 2287 } 2288 if (DEBUG_TASKS) Slog.w(TAG, 2289 "resetTaskIntendedTask: calling finishActivity on " + p); 2290 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2291 end--; 2292 srcPos--; 2293 } 2294 } 2295 replyChainEnd = -1; 2296 } else { 2297 // If we were in the middle of a chain, well the 2298 // activity that started it all doesn't want anything 2299 // special, so leave it all as-is. 2300 replyChainEnd = -1; 2301 } 2302 } 2303 2304 return topOptions; 2305 } 2306 2307 /** 2308 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2309 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2310 * @param affinityTask The task we are looking for an affinity to. 2311 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2312 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2313 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2314 */ 2315 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2316 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2317 int replyChainEnd = -1; 2318 final int taskId = task.taskId; 2319 final String taskAffinity = task.affinity; 2320 2321 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2322 final int numActivities = activities.size(); 2323 final int rootActivityNdx = affinityTask.findEffectiveRootIndex(); 2324 2325 // Do not operate on or below the effective root Activity. 2326 for (int i = numActivities - 1; i > rootActivityNdx; --i) { 2327 ActivityRecord target = activities.get(i); 2328 if (target.frontOfTask) 2329 break; 2330 2331 final int flags = target.info.flags; 2332 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2333 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2334 2335 if (target.resultTo != null) { 2336 // If this activity is sending a reply to a previous 2337 // activity, we can't do anything with it now until 2338 // we reach the start of the reply chain. 2339 // XXX note that we are assuming the result is always 2340 // to the previous activity, which is almost always 2341 // the case but we really shouldn't count on. 2342 if (replyChainEnd < 0) { 2343 replyChainEnd = i; 2344 } 2345 } else if (topTaskIsHigher 2346 && allowTaskReparenting 2347 && taskAffinity != null 2348 && taskAffinity.equals(target.taskAffinity)) { 2349 // This activity has an affinity for our task. Either remove it if we are 2350 // clearing or move it over to our task. Note that 2351 // we currently punt on the case where we are resetting a 2352 // task that is not at the top but who has activities above 2353 // with an affinity to it... this is really not a normal 2354 // case, and we will need to later pull that task to the front 2355 // and usually at that point we will do the reset and pick 2356 // up those remaining activities. (This only happens if 2357 // someone starts an activity in a new task from an activity 2358 // in a task that is not currently on top.) 2359 if (forceReset || finishOnTaskLaunch) { 2360 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2361 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2362 for (int srcPos = start; srcPos >= i; --srcPos) { 2363 final ActivityRecord p = activities.get(srcPos); 2364 if (p.finishing) { 2365 continue; 2366 } 2367 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2368 } 2369 } else { 2370 if (taskInsertionPoint < 0) { 2371 taskInsertionPoint = task.mActivities.size(); 2372 2373 } 2374 2375 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2376 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2377 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2378 for (int srcPos = start; srcPos >= i; --srcPos) { 2379 final ActivityRecord p = activities.get(srcPos); 2380 p.setTask(task, null); 2381 task.addActivityAtIndex(taskInsertionPoint, p); 2382 2383 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2384 + " to stack at " + task, 2385 new RuntimeException("here").fillInStackTrace()); 2386 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2387 + " in to resetting task " + task); 2388 mWindowManager.setAppGroupId(p.appToken, taskId); 2389 } 2390 mWindowManager.moveTaskToTop(taskId); 2391 if (VALIDATE_TOKENS) { 2392 validateAppTokensLocked(); 2393 } 2394 2395 // Now we've moved it in to place... but what if this is 2396 // a singleTop activity and we have put it on top of another 2397 // instance of the same activity? Then we drop the instance 2398 // below so it remains singleTop. 2399 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2400 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2401 int targetNdx = taskActivities.indexOf(target); 2402 if (targetNdx > 0) { 2403 ActivityRecord p = taskActivities.get(targetNdx - 1); 2404 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2405 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2406 false); 2407 } 2408 } 2409 } 2410 } 2411 2412 replyChainEnd = -1; 2413 } 2414 } 2415 return taskInsertionPoint; 2416 } 2417 2418 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2419 ActivityRecord newActivity) { 2420 boolean forceReset = 2421 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2422 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2423 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2424 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2425 forceReset = true; 2426 } 2427 } 2428 2429 final TaskRecord task = taskTop.task; 2430 2431 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2432 * for remaining tasks. Used for later tasks to reparent to task. */ 2433 boolean taskFound = false; 2434 2435 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2436 ActivityOptions topOptions = null; 2437 2438 // Preserve the location for reparenting in the new task. 2439 int reparentInsertionPoint = -1; 2440 2441 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2442 final TaskRecord targetTask = mTaskHistory.get(i); 2443 2444 if (targetTask == task) { 2445 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2446 taskFound = true; 2447 } else { 2448 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2449 taskFound, forceReset, reparentInsertionPoint); 2450 } 2451 } 2452 2453 int taskNdx = mTaskHistory.indexOf(task); 2454 do { 2455 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2456 } while (taskTop == null && taskNdx >= 0); 2457 2458 if (topOptions != null) { 2459 // If we got some ActivityOptions from an activity on top that 2460 // was removed from the task, propagate them to the new real top. 2461 if (taskTop != null) { 2462 taskTop.updateOptionsLocked(topOptions); 2463 } else { 2464 topOptions.abort(); 2465 } 2466 } 2467 2468 return taskTop; 2469 } 2470 2471 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2472 String resultWho, int requestCode, int resultCode, Intent data) { 2473 2474 if (callingUid > 0) { 2475 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2476 data, r.getUriPermissionsLocked(), r.userId); 2477 } 2478 2479 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2480 + " : who=" + resultWho + " req=" + requestCode 2481 + " res=" + resultCode + " data=" + data); 2482 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2483 try { 2484 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2485 list.add(new ResultInfo(resultWho, requestCode, 2486 resultCode, data)); 2487 r.app.thread.scheduleSendResult(r.appToken, list); 2488 return; 2489 } catch (Exception e) { 2490 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2491 } 2492 } 2493 2494 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2495 } 2496 2497 private void adjustFocusedActivityLocked(ActivityRecord r) { 2498 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2499 ActivityRecord next = topRunningActivityLocked(null); 2500 if (next != r) { 2501 final TaskRecord task = r.task; 2502 if (r.frontOfTask && task == topTask() && task.isOverHomeStack()) { 2503 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 2504 } 2505 } 2506 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2507 if (top != null) { 2508 mService.setFocusedActivityLocked(top); 2509 } 2510 } 2511 } 2512 2513 final void stopActivityLocked(ActivityRecord r) { 2514 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2515 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2516 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2517 if (!r.finishing) { 2518 if (!mService.isSleeping()) { 2519 if (DEBUG_STATES) { 2520 Slog.d(TAG, "no-history finish of " + r); 2521 } 2522 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2523 "no-history", false); 2524 } else { 2525 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2526 + " on stop because we're just sleeping"); 2527 } 2528 } 2529 } 2530 2531 if (r.app != null && r.app.thread != null) { 2532 adjustFocusedActivityLocked(r); 2533 r.resumeKeyDispatchingLocked(); 2534 try { 2535 r.stopped = false; 2536 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2537 + " (stop requested)"); 2538 r.state = ActivityState.STOPPING; 2539 if (DEBUG_VISBILITY) Slog.v( 2540 TAG, "Stopping visible=" + r.visible + " for " + r); 2541 if (!r.visible) { 2542 mWindowManager.setAppVisibility(r.appToken, false); 2543 } 2544 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2545 if (mService.isSleepingOrShuttingDown()) { 2546 r.setSleeping(true); 2547 } 2548 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2549 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2550 } catch (Exception e) { 2551 // Maybe just ignore exceptions here... if the process 2552 // has crashed, our death notification will clean things 2553 // up. 2554 Slog.w(TAG, "Exception thrown during pause", e); 2555 // Just in case, assume it to be stopped. 2556 r.stopped = true; 2557 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2558 r.state = ActivityState.STOPPED; 2559 if (r.configDestroy) { 2560 destroyActivityLocked(r, true, "stop-except"); 2561 } 2562 } 2563 } 2564 } 2565 2566 /** 2567 * @return Returns true if the activity is being finished, false if for 2568 * some reason it is being left as-is. 2569 */ 2570 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2571 Intent resultData, String reason, boolean oomAdj) { 2572 ActivityRecord r = isInStackLocked(token); 2573 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2574 TAG, "Finishing activity token=" + token + " r=" 2575 + ", result=" + resultCode + ", data=" + resultData 2576 + ", reason=" + reason); 2577 if (r == null) { 2578 return false; 2579 } 2580 2581 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2582 return true; 2583 } 2584 2585 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2586 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2587 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2588 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2589 ActivityRecord r = activities.get(activityNdx); 2590 if (r.resultTo == self && r.requestCode == requestCode) { 2591 if ((r.resultWho == null && resultWho == null) || 2592 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2593 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2594 false); 2595 } 2596 } 2597 } 2598 } 2599 mService.updateOomAdjLocked(); 2600 } 2601 2602 final void finishTopRunningActivityLocked(ProcessRecord app) { 2603 ActivityRecord r = topRunningActivityLocked(null); 2604 if (r != null && r.app == app) { 2605 // If the top running activity is from this crashing 2606 // process, then terminate it to avoid getting in a loop. 2607 Slog.w(TAG, " Force finishing activity " 2608 + r.intent.getComponent().flattenToShortString()); 2609 int taskNdx = mTaskHistory.indexOf(r.task); 2610 int activityNdx = r.task.mActivities.indexOf(r); 2611 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2612 // Also terminate any activities below it that aren't yet 2613 // stopped, to avoid a situation where one will get 2614 // re-start our crashing activity once it gets resumed again. 2615 --activityNdx; 2616 if (activityNdx < 0) { 2617 do { 2618 --taskNdx; 2619 if (taskNdx < 0) { 2620 break; 2621 } 2622 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2623 } while (activityNdx < 0); 2624 } 2625 if (activityNdx >= 0) { 2626 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2627 if (r.state == ActivityState.RESUMED 2628 || r.state == ActivityState.PAUSING 2629 || r.state == ActivityState.PAUSED) { 2630 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2631 Slog.w(TAG, " Force finishing activity " 2632 + r.intent.getComponent().flattenToShortString()); 2633 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2634 } 2635 } 2636 } 2637 } 2638 } 2639 2640 final void finishVoiceTask(IVoiceInteractionSession session) { 2641 IBinder sessionBinder = session.asBinder(); 2642 boolean didOne = false; 2643 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2644 TaskRecord tr = mTaskHistory.get(taskNdx); 2645 if (tr.voiceSession != null && tr.voiceSession.asBinder() == sessionBinder) { 2646 for (int activityNdx = tr.mActivities.size() - 1; activityNdx >= 0; --activityNdx) { 2647 ActivityRecord r = tr.mActivities.get(activityNdx); 2648 if (!r.finishing) { 2649 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "finish-voice", 2650 false); 2651 didOne = true; 2652 } 2653 } 2654 } 2655 } 2656 if (didOne) { 2657 mService.updateOomAdjLocked(); 2658 } 2659 } 2660 2661 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2662 ArrayList<ActivityRecord> activities = r.task.mActivities; 2663 for (int index = activities.indexOf(r); index >= 0; --index) { 2664 ActivityRecord cur = activities.get(index); 2665 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2666 break; 2667 } 2668 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2669 } 2670 return true; 2671 } 2672 2673 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2674 // send the result 2675 ActivityRecord resultTo = r.resultTo; 2676 if (resultTo != null) { 2677 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2678 + " who=" + r.resultWho + " req=" + r.requestCode 2679 + " res=" + resultCode + " data=" + resultData); 2680 if (resultTo.userId != r.userId) { 2681 if (resultData != null) { 2682 resultData.setContentUserHint(r.userId); 2683 } 2684 } 2685 if (r.info.applicationInfo.uid > 0) { 2686 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2687 resultTo.packageName, resultData, 2688 resultTo.getUriPermissionsLocked(), resultTo.userId); 2689 } 2690 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2691 resultData); 2692 r.resultTo = null; 2693 } 2694 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2695 2696 // Make sure this HistoryRecord is not holding on to other resources, 2697 // because clients have remote IPC references to this object so we 2698 // can't assume that will go away and want to avoid circular IPC refs. 2699 r.results = null; 2700 r.pendingResults = null; 2701 r.newIntents = null; 2702 r.icicle = null; 2703 } 2704 2705 /** 2706 * @return Returns true if this activity has been removed from the history 2707 * list, or false if it is still in the list and will be removed later. 2708 */ 2709 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2710 String reason, boolean oomAdj) { 2711 if (r.finishing) { 2712 Slog.w(TAG, "Duplicate finish request for " + r); 2713 return false; 2714 } 2715 2716 r.makeFinishing(); 2717 final TaskRecord task = r.task; 2718 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2719 r.userId, System.identityHashCode(r), 2720 task.taskId, r.shortComponentName, reason); 2721 final ArrayList<ActivityRecord> activities = task.mActivities; 2722 final int index = activities.indexOf(r); 2723 if (index < (activities.size() - 1)) { 2724 task.setFrontOfTask(); 2725 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2726 // If the caller asked that this activity (and all above it) 2727 // be cleared when the task is reset, don't lose that information, 2728 // but propagate it up to the next activity. 2729 ActivityRecord next = activities.get(index+1); 2730 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2731 } 2732 } 2733 2734 r.pauseKeyDispatchingLocked(); 2735 2736 adjustFocusedActivityLocked(r); 2737 2738 finishActivityResultsLocked(r, resultCode, resultData); 2739 2740 if (mResumedActivity == r) { 2741 boolean endTask = index <= 0; 2742 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2743 "Prepare close transition: finishing " + r); 2744 mWindowManager.prepareAppTransition(endTask 2745 ? AppTransition.TRANSIT_TASK_CLOSE 2746 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2747 2748 // Tell window manager to prepare for this one to be removed. 2749 mWindowManager.setAppVisibility(r.appToken, false); 2750 2751 if (mPausingActivity == null) { 2752 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2753 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2754 startPausingLocked(false, false, false, false); 2755 } 2756 2757 if (endTask) { 2758 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2759 } 2760 } else if (r.state != ActivityState.PAUSING) { 2761 // If the activity is PAUSING, we will complete the finish once 2762 // it is done pausing; else we can just directly finish it here. 2763 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2764 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2765 } else { 2766 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2767 } 2768 2769 return false; 2770 } 2771 2772 static final int FINISH_IMMEDIATELY = 0; 2773 static final int FINISH_AFTER_PAUSE = 1; 2774 static final int FINISH_AFTER_VISIBLE = 2; 2775 2776 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2777 // First things first: if this activity is currently visible, 2778 // and the resumed activity is not yet visible, then hold off on 2779 // finishing until the resumed one becomes visible. 2780 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2781 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2782 mStackSupervisor.mStoppingActivities.add(r); 2783 if (mStackSupervisor.mStoppingActivities.size() > 3 2784 || r.frontOfTask && mTaskHistory.size() <= 1) { 2785 // If we already have a few activities waiting to stop, 2786 // then give up on things going idle and start clearing 2787 // them out. Or if r is the last of activity of the last task the stack 2788 // will be empty and must be cleared immediately. 2789 mStackSupervisor.scheduleIdleLocked(); 2790 } else { 2791 mStackSupervisor.checkReadyForSleepLocked(); 2792 } 2793 } 2794 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2795 + " (finish requested)"); 2796 r.state = ActivityState.STOPPING; 2797 if (oomAdj) { 2798 mService.updateOomAdjLocked(); 2799 } 2800 return r; 2801 } 2802 2803 // make sure the record is cleaned out of other places. 2804 mStackSupervisor.mStoppingActivities.remove(r); 2805 mStackSupervisor.mGoingToSleepActivities.remove(r); 2806 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2807 if (mResumedActivity == r) { 2808 mResumedActivity = null; 2809 } 2810 final ActivityState prevState = r.state; 2811 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2812 r.state = ActivityState.FINISHING; 2813 2814 if (mode == FINISH_IMMEDIATELY 2815 || prevState == ActivityState.STOPPED 2816 || prevState == ActivityState.INITIALIZING) { 2817 // If this activity is already stopped, we can just finish 2818 // it right now. 2819 r.makeFinishing(); 2820 boolean activityRemoved = destroyActivityLocked(r, true, "finish-imm"); 2821 if (activityRemoved) { 2822 mStackSupervisor.resumeTopActivitiesLocked(); 2823 } 2824 if (DEBUG_CONTAINERS) Slog.d(TAG, 2825 "destroyActivityLocked: finishCurrentActivityLocked r=" + r + 2826 " destroy returned removed=" + activityRemoved); 2827 return activityRemoved ? null : r; 2828 } 2829 2830 // Need to go through the full pause cycle to get this 2831 // activity into the stopped state and then finish it. 2832 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2833 mStackSupervisor.mFinishingActivities.add(r); 2834 r.resumeKeyDispatchingLocked(); 2835 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2836 return r; 2837 } 2838 2839 void finishAllActivitiesLocked(boolean immediately) { 2840 boolean noActivitiesInStack = true; 2841 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2842 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2843 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2844 final ActivityRecord r = activities.get(activityNdx); 2845 noActivitiesInStack = false; 2846 if (r.finishing && !immediately) { 2847 continue; 2848 } 2849 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r + " immediately"); 2850 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2851 } 2852 } 2853 if (noActivitiesInStack) { 2854 mActivityContainer.onTaskListEmptyLocked(); 2855 } 2856 } 2857 2858 final boolean shouldUpRecreateTaskLocked(ActivityRecord srec, String destAffinity) { 2859 // Basic case: for simple app-centric recents, we need to recreate 2860 // the task if the affinity has changed. 2861 if (srec == null || srec.task.affinity == null || 2862 !srec.task.affinity.equals(destAffinity)) { 2863 return true; 2864 } 2865 // Document-centric case: an app may be split in to multiple documents; 2866 // they need to re-create their task if this current activity is the root 2867 // of a document, unless simply finishing it will return them to the the 2868 // correct app behind. 2869 if (srec.frontOfTask && srec.task != null && srec.task.getBaseIntent() != null 2870 && srec.task.getBaseIntent().isDocument()) { 2871 // Okay, this activity is at the root of its task. What to do, what to do... 2872 if (srec.task.getTaskToReturnTo() != ActivityRecord.APPLICATION_ACTIVITY_TYPE) { 2873 // Finishing won't return to an application, so we need to recreate. 2874 return true; 2875 } 2876 // We now need to get the task below it to determine what to do. 2877 int taskIdx = mTaskHistory.indexOf(srec.task); 2878 if (taskIdx <= 0) { 2879 Slog.w(TAG, "shouldUpRecreateTask: task not in history for " + srec); 2880 return false; 2881 } 2882 if (taskIdx == 0) { 2883 // At the bottom of the stack, nothing to go back to. 2884 return true; 2885 } 2886 TaskRecord prevTask = mTaskHistory.get(taskIdx); 2887 if (!srec.task.affinity.equals(prevTask.affinity)) { 2888 // These are different apps, so need to recreate. 2889 return true; 2890 } 2891 } 2892 return false; 2893 } 2894 2895 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2896 Intent resultData) { 2897 final ActivityRecord srec = ActivityRecord.forToken(token); 2898 final TaskRecord task = srec.task; 2899 final ArrayList<ActivityRecord> activities = task.mActivities; 2900 final int start = activities.indexOf(srec); 2901 if (!mTaskHistory.contains(task) || (start < 0)) { 2902 return false; 2903 } 2904 int finishTo = start - 1; 2905 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2906 boolean foundParentInTask = false; 2907 final ComponentName dest = destIntent.getComponent(); 2908 if (start > 0 && dest != null) { 2909 for (int i = finishTo; i >= 0; i--) { 2910 ActivityRecord r = activities.get(i); 2911 if (r.info.packageName.equals(dest.getPackageName()) && 2912 r.info.name.equals(dest.getClassName())) { 2913 finishTo = i; 2914 parent = r; 2915 foundParentInTask = true; 2916 break; 2917 } 2918 } 2919 } 2920 2921 IActivityController controller = mService.mController; 2922 if (controller != null) { 2923 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2924 if (next != null) { 2925 // ask watcher if this is allowed 2926 boolean resumeOK = true; 2927 try { 2928 resumeOK = controller.activityResuming(next.packageName); 2929 } catch (RemoteException e) { 2930 mService.mController = null; 2931 Watchdog.getInstance().setActivityController(null); 2932 } 2933 2934 if (!resumeOK) { 2935 return false; 2936 } 2937 } 2938 } 2939 final long origId = Binder.clearCallingIdentity(); 2940 for (int i = start; i > finishTo; i--) { 2941 ActivityRecord r = activities.get(i); 2942 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2943 // Only return the supplied result for the first activity finished 2944 resultCode = Activity.RESULT_CANCELED; 2945 resultData = null; 2946 } 2947 2948 if (parent != null && foundParentInTask) { 2949 final int parentLaunchMode = parent.info.launchMode; 2950 final int destIntentFlags = destIntent.getFlags(); 2951 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2952 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2953 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2954 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2955 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2956 } else { 2957 try { 2958 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2959 destIntent.getComponent(), 0, srec.userId); 2960 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2961 null, aInfo, null, null, parent.appToken, null, 2962 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2963 -1, parent.launchedFromUid, 0, null, true, null, null, null); 2964 foundParentInTask = res == ActivityManager.START_SUCCESS; 2965 } catch (RemoteException e) { 2966 foundParentInTask = false; 2967 } 2968 requestFinishActivityLocked(parent.appToken, resultCode, 2969 resultData, "navigate-up", true); 2970 } 2971 } 2972 Binder.restoreCallingIdentity(origId); 2973 return foundParentInTask; 2974 } 2975 /** 2976 * Perform the common clean-up of an activity record. This is called both 2977 * as part of destroyActivityLocked() (when destroying the client-side 2978 * representation) and cleaning things up as a result of its hosting 2979 * processing going away, in which case there is no remaining client-side 2980 * state to destroy so only the cleanup here is needed. 2981 */ 2982 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2983 boolean setState) { 2984 if (mResumedActivity == r) { 2985 mResumedActivity = null; 2986 } 2987 if (mPausingActivity == r) { 2988 mPausingActivity = null; 2989 } 2990 mService.clearFocusedActivity(r); 2991 2992 r.configDestroy = false; 2993 r.frozenBeforeDestroy = false; 2994 2995 if (setState) { 2996 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2997 r.state = ActivityState.DESTROYED; 2998 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2999 r.app = null; 3000 } 3001 3002 // Make sure this record is no longer in the pending finishes list. 3003 // This could happen, for example, if we are trimming activities 3004 // down to the max limit while they are still waiting to finish. 3005 mStackSupervisor.mFinishingActivities.remove(r); 3006 mStackSupervisor.mWaitingVisibleActivities.remove(r); 3007 3008 // Remove any pending results. 3009 if (r.finishing && r.pendingResults != null) { 3010 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 3011 PendingIntentRecord rec = apr.get(); 3012 if (rec != null) { 3013 mService.cancelIntentSenderLocked(rec, false); 3014 } 3015 } 3016 r.pendingResults = null; 3017 } 3018 3019 if (cleanServices) { 3020 cleanUpActivityServicesLocked(r); 3021 } 3022 3023 // Get rid of any pending idle timeouts. 3024 removeTimeoutsForActivityLocked(r); 3025 if (getVisibleBehindActivity() == r) { 3026 mStackSupervisor.requestVisibleBehindLocked(r, false); 3027 } 3028 } 3029 3030 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 3031 mStackSupervisor.removeTimeoutsForActivityLocked(r); 3032 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3033 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 3034 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3035 r.finishLaunchTickingLocked(); 3036 } 3037 3038 private void removeActivityFromHistoryLocked(ActivityRecord r) { 3039 mStackSupervisor.removeChildActivityContainers(r); 3040 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 3041 r.makeFinishing(); 3042 if (DEBUG_ADD_REMOVE) { 3043 RuntimeException here = new RuntimeException("here"); 3044 here.fillInStackTrace(); 3045 Slog.i(TAG, "Removing activity " + r + " from stack"); 3046 } 3047 r.takeFromHistory(); 3048 removeTimeoutsForActivityLocked(r); 3049 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 3050 r.state = ActivityState.DESTROYED; 3051 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 3052 r.app = null; 3053 mWindowManager.removeAppToken(r.appToken); 3054 if (VALIDATE_TOKENS) { 3055 validateAppTokensLocked(); 3056 } 3057 final TaskRecord task = r.task; 3058 if (task != null && task.removeActivity(r)) { 3059 if (DEBUG_STACK) Slog.i(TAG, 3060 "removeActivityFromHistoryLocked: last activity removed from " + this); 3061 if (mStackSupervisor.isFrontStack(this) && task == topTask() && 3062 task.isOverHomeStack()) { 3063 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 3064 } 3065 removeTask(task); 3066 } 3067 cleanUpActivityServicesLocked(r); 3068 r.removeUriPermissionsLocked(); 3069 } 3070 3071 /** 3072 * Perform clean-up of service connections in an activity record. 3073 */ 3074 final void cleanUpActivityServicesLocked(ActivityRecord r) { 3075 // Throw away any services that have been bound by this activity. 3076 if (r.connections != null) { 3077 Iterator<ConnectionRecord> it = r.connections.iterator(); 3078 while (it.hasNext()) { 3079 ConnectionRecord c = it.next(); 3080 mService.mServices.removeConnectionLocked(c, null, r); 3081 } 3082 r.connections = null; 3083 } 3084 } 3085 3086 final void scheduleDestroyActivities(ProcessRecord owner, String reason) { 3087 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 3088 msg.obj = new ScheduleDestroyArgs(owner, reason); 3089 mHandler.sendMessage(msg); 3090 } 3091 3092 final void destroyActivitiesLocked(ProcessRecord owner, String reason) { 3093 boolean lastIsOpaque = false; 3094 boolean activityRemoved = false; 3095 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3096 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3097 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3098 final ActivityRecord r = activities.get(activityNdx); 3099 if (r.finishing) { 3100 continue; 3101 } 3102 if (r.fullscreen) { 3103 lastIsOpaque = true; 3104 } 3105 if (owner != null && r.app != owner) { 3106 continue; 3107 } 3108 if (!lastIsOpaque) { 3109 continue; 3110 } 3111 if (r.isDestroyable()) { 3112 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 3113 + " resumed=" + mResumedActivity 3114 + " pausing=" + mPausingActivity + " for reason " + reason); 3115 if (destroyActivityLocked(r, true, reason)) { 3116 activityRemoved = true; 3117 } 3118 } 3119 } 3120 } 3121 if (activityRemoved) { 3122 mStackSupervisor.resumeTopActivitiesLocked(); 3123 } 3124 } 3125 3126 final boolean safelyDestroyActivityLocked(ActivityRecord r, String reason) { 3127 if (r.isDestroyable()) { 3128 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 3129 + " resumed=" + mResumedActivity 3130 + " pausing=" + mPausingActivity + " for reason " + reason); 3131 return destroyActivityLocked(r, true, reason); 3132 } 3133 return false; 3134 } 3135 3136 final int releaseSomeActivitiesLocked(ProcessRecord app, ArraySet<TaskRecord> tasks, 3137 String reason) { 3138 // Iterate over tasks starting at the back (oldest) first. 3139 if (DEBUG_RELEASE) Slog.d(TAG, "Trying to release some activities in " + app); 3140 int maxTasks = tasks.size() / 4; 3141 if (maxTasks < 1) { 3142 maxTasks = 1; 3143 } 3144 int numReleased = 0; 3145 for (int taskNdx = 0; taskNdx < mTaskHistory.size() && maxTasks > 0; taskNdx++) { 3146 final TaskRecord task = mTaskHistory.get(taskNdx); 3147 if (!tasks.contains(task)) { 3148 continue; 3149 } 3150 if (DEBUG_RELEASE) Slog.d(TAG, "Looking for activities to release in " + task); 3151 int curNum = 0; 3152 final ArrayList<ActivityRecord> activities = task.mActivities; 3153 for (int actNdx = 0; actNdx < activities.size(); actNdx++) { 3154 final ActivityRecord activity = activities.get(actNdx); 3155 if (activity.app == app && activity.isDestroyable()) { 3156 if (DEBUG_RELEASE) Slog.v(TAG, "Destroying " + activity 3157 + " in state " + activity.state + " resumed=" + mResumedActivity 3158 + " pausing=" + mPausingActivity + " for reason " + reason); 3159 destroyActivityLocked(activity, true, reason); 3160 if (activities.get(actNdx) != activity) { 3161 // Was removed from list, back up so we don't miss the next one. 3162 actNdx--; 3163 } 3164 curNum++; 3165 } 3166 } 3167 if (curNum > 0) { 3168 numReleased += curNum; 3169 maxTasks--; 3170 if (mTaskHistory.get(taskNdx) != task) { 3171 // The entire task got removed, back up so we don't miss the next one. 3172 taskNdx--; 3173 } 3174 } 3175 } 3176 if (DEBUG_RELEASE) Slog.d(TAG, "Done releasing: did " + numReleased + " activities"); 3177 return numReleased; 3178 } 3179 3180 /** 3181 * Destroy the current CLIENT SIDE instance of an activity. This may be 3182 * called both when actually finishing an activity, or when performing 3183 * a configuration switch where we destroy the current client-side object 3184 * but then create a new client-side object for this same HistoryRecord. 3185 */ 3186 final boolean destroyActivityLocked(ActivityRecord r, boolean removeFromApp, String reason) { 3187 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 3188 TAG, "Removing activity from " + reason + ": token=" + r 3189 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 3190 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 3191 r.userId, System.identityHashCode(r), 3192 r.task.taskId, r.shortComponentName, reason); 3193 3194 boolean removedFromHistory = false; 3195 3196 cleanUpActivityLocked(r, false, false); 3197 3198 final boolean hadApp = r.app != null; 3199 3200 if (hadApp) { 3201 if (removeFromApp) { 3202 r.app.activities.remove(r); 3203 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 3204 mService.mHeavyWeightProcess = null; 3205 mService.mHandler.sendEmptyMessage( 3206 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 3207 } 3208 if (r.app.activities.isEmpty()) { 3209 // Update any services we are bound to that might care about whether 3210 // their client may have activities. 3211 mService.mServices.updateServiceConnectionActivitiesLocked(r.app); 3212 // No longer have activities, so update LRU list and oom adj. 3213 mService.updateLruProcessLocked(r.app, false, null); 3214 mService.updateOomAdjLocked(); 3215 } 3216 } 3217 3218 boolean skipDestroy = false; 3219 3220 try { 3221 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 3222 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 3223 r.configChangeFlags); 3224 } catch (Exception e) { 3225 // We can just ignore exceptions here... if the process 3226 // has crashed, our death notification will clean things 3227 // up. 3228 //Slog.w(TAG, "Exception thrown during finish", e); 3229 if (r.finishing) { 3230 removeActivityFromHistoryLocked(r); 3231 removedFromHistory = true; 3232 skipDestroy = true; 3233 } 3234 } 3235 3236 r.nowVisible = false; 3237 3238 // If the activity is finishing, we need to wait on removing it 3239 // from the list to give it a chance to do its cleanup. During 3240 // that time it may make calls back with its token so we need to 3241 // be able to find it on the list and so we don't want to remove 3242 // it from the list yet. Otherwise, we can just immediately put 3243 // it in the destroyed state since we are not removing it from the 3244 // list. 3245 if (r.finishing && !skipDestroy) { 3246 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 3247 + " (destroy requested)"); 3248 r.state = ActivityState.DESTROYING; 3249 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 3250 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 3251 } else { 3252 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 3253 r.state = ActivityState.DESTROYED; 3254 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3255 r.app = null; 3256 } 3257 } else { 3258 // remove this record from the history. 3259 if (r.finishing) { 3260 removeActivityFromHistoryLocked(r); 3261 removedFromHistory = true; 3262 } else { 3263 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 3264 r.state = ActivityState.DESTROYED; 3265 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3266 r.app = null; 3267 } 3268 } 3269 3270 r.configChangeFlags = 0; 3271 3272 if (!mLRUActivities.remove(r) && hadApp) { 3273 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 3274 } 3275 3276 return removedFromHistory; 3277 } 3278 3279 final void activityDestroyedLocked(IBinder token) { 3280 final long origId = Binder.clearCallingIdentity(); 3281 try { 3282 ActivityRecord r = ActivityRecord.forToken(token); 3283 if (r != null) { 3284 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3285 } 3286 if (DEBUG_CONTAINERS) Slog.d(TAG, "activityDestroyedLocked: r=" + r); 3287 3288 if (isInStackLocked(token) != null) { 3289 if (r.state == ActivityState.DESTROYING) { 3290 cleanUpActivityLocked(r, true, false); 3291 removeActivityFromHistoryLocked(r); 3292 } 3293 } 3294 mStackSupervisor.resumeTopActivitiesLocked(); 3295 } finally { 3296 Binder.restoreCallingIdentity(origId); 3297 } 3298 } 3299 3300 void releaseBackgroundResources() { 3301 if (hasVisibleBehindActivity() && 3302 !mHandler.hasMessages(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG)) { 3303 final ActivityRecord r = getVisibleBehindActivity(); 3304 if (r == topRunningActivityLocked(null)) { 3305 // Don't release the top activity if it has requested to run behind the next 3306 // activity. 3307 return; 3308 } 3309 if (DEBUG_STATES) Slog.d(TAG, "releaseBackgroundResources activtyDisplay=" + 3310 mActivityContainer.mActivityDisplay + " visibleBehind=" + r + " app=" + r.app + 3311 " thread=" + r.app.thread); 3312 if (r != null && r.app != null && r.app.thread != null) { 3313 try { 3314 r.app.thread.scheduleCancelVisibleBehind(r.appToken); 3315 } catch (RemoteException e) { 3316 } 3317 mHandler.sendEmptyMessageDelayed(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG, 500); 3318 } else { 3319 Slog.e(TAG, "releaseBackgroundResources: activity " + r + " no longer running"); 3320 backgroundResourcesReleased(r.appToken); 3321 } 3322 } 3323 } 3324 3325 final void backgroundResourcesReleased(IBinder token) { 3326 mHandler.removeMessages(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG); 3327 final ActivityRecord r = getVisibleBehindActivity(); 3328 if (r != null) { 3329 mStackSupervisor.mStoppingActivities.add(r); 3330 setVisibleBehindActivity(null); 3331 } 3332 mStackSupervisor.resumeTopActivitiesLocked(); 3333 } 3334 3335 boolean hasVisibleBehindActivity() { 3336 return isAttached() && mActivityContainer.mActivityDisplay.hasVisibleBehindActivity(); 3337 } 3338 3339 void setVisibleBehindActivity(ActivityRecord r) { 3340 if (isAttached()) { 3341 mActivityContainer.mActivityDisplay.setVisibleBehindActivity(r); 3342 } 3343 } 3344 3345 ActivityRecord getVisibleBehindActivity() { 3346 return isAttached() ? mActivityContainer.mActivityDisplay.mVisibleBehindActivity : null; 3347 } 3348 3349 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3350 ProcessRecord app, String listName) { 3351 int i = list.size(); 3352 if (DEBUG_CLEANUP) Slog.v( 3353 TAG, "Removing app " + app + " from list " + listName 3354 + " with " + i + " entries"); 3355 while (i > 0) { 3356 i--; 3357 ActivityRecord r = list.get(i); 3358 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3359 if (r.app == app) { 3360 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3361 list.remove(i); 3362 removeTimeoutsForActivityLocked(r); 3363 } 3364 } 3365 } 3366 3367 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3368 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3369 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3370 "mStoppingActivities"); 3371 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3372 "mGoingToSleepActivities"); 3373 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3374 "mWaitingVisibleActivities"); 3375 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3376 "mFinishingActivities"); 3377 3378 boolean hasVisibleActivities = false; 3379 3380 // Clean out the history list. 3381 int i = numActivities(); 3382 if (DEBUG_CLEANUP) Slog.v( 3383 TAG, "Removing app " + app + " from history with " + i + " entries"); 3384 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3385 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3386 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3387 final ActivityRecord r = activities.get(activityNdx); 3388 --i; 3389 if (DEBUG_CLEANUP) Slog.v( 3390 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3391 if (r.app == app) { 3392 boolean remove; 3393 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3394 // Don't currently have state for the activity, or 3395 // it is finishing -- always remove it. 3396 remove = true; 3397 } else if (r.launchCount > 2 && 3398 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3399 // We have launched this activity too many times since it was 3400 // able to run, so give up and remove it. 3401 remove = true; 3402 } else { 3403 // The process may be gone, but the activity lives on! 3404 remove = false; 3405 } 3406 if (remove) { 3407 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3408 RuntimeException here = new RuntimeException("here"); 3409 here.fillInStackTrace(); 3410 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3411 + ": haveState=" + r.haveState 3412 + " stateNotNeeded=" + r.stateNotNeeded 3413 + " finishing=" + r.finishing 3414 + " state=" + r.state, here); 3415 } 3416 if (!r.finishing) { 3417 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3418 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3419 r.userId, System.identityHashCode(r), 3420 r.task.taskId, r.shortComponentName, 3421 "proc died without state saved"); 3422 if (r.state == ActivityState.RESUMED) { 3423 mService.updateUsageStats(r, false); 3424 } 3425 } 3426 removeActivityFromHistoryLocked(r); 3427 3428 } else { 3429 // We have the current state for this activity, so 3430 // it can be restarted later when needed. 3431 if (localLOGV) Slog.v( 3432 TAG, "Keeping entry, setting app to null"); 3433 if (r.visible) { 3434 hasVisibleActivities = true; 3435 } 3436 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3437 + r); 3438 r.app = null; 3439 r.nowVisible = false; 3440 if (!r.haveState) { 3441 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3442 "App died, clearing saved state of " + r); 3443 r.icicle = null; 3444 } 3445 } 3446 3447 cleanUpActivityLocked(r, true, true); 3448 } 3449 } 3450 } 3451 3452 return hasVisibleActivities; 3453 } 3454 3455 final void updateTransitLocked(int transit, Bundle options) { 3456 if (options != null) { 3457 ActivityRecord r = topRunningActivityLocked(null); 3458 if (r != null && r.state != ActivityState.RESUMED) { 3459 r.updateOptionsLocked(options); 3460 } else { 3461 ActivityOptions.abort(options); 3462 } 3463 } 3464 mWindowManager.prepareAppTransition(transit, false); 3465 } 3466 3467 void updateTaskMovement(TaskRecord task, boolean toFront) { 3468 if (task.isPersistable) { 3469 task.mLastTimeMoved = System.currentTimeMillis(); 3470 // Sign is used to keep tasks sorted when persisted. Tasks sent to the bottom most 3471 // recently will be most negative, tasks sent to the bottom before that will be less 3472 // negative. Similarly for recent tasks moved to the top which will be most positive. 3473 if (!toFront) { 3474 task.mLastTimeMoved *= -1; 3475 } 3476 } 3477 } 3478 3479 void moveHomeStackTaskToTop(int homeStackTaskType) { 3480 final int top = mTaskHistory.size() - 1; 3481 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3482 final TaskRecord task = mTaskHistory.get(taskNdx); 3483 if (task.taskType == homeStackTaskType) { 3484 if (DEBUG_TASKS || DEBUG_STACK) 3485 Slog.d(TAG, "moveHomeStackTaskToTop: moving " + task); 3486 mTaskHistory.remove(taskNdx); 3487 mTaskHistory.add(top, task); 3488 updateTaskMovement(task, true); 3489 mWindowManager.moveTaskToTop(task.taskId); 3490 return; 3491 } 3492 } 3493 } 3494 3495 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3496 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3497 3498 final int numTasks = mTaskHistory.size(); 3499 final int index = mTaskHistory.indexOf(tr); 3500 if (numTasks == 0 || index < 0) { 3501 // nothing to do! 3502 if (reason != null && 3503 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3504 ActivityOptions.abort(options); 3505 } else { 3506 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3507 } 3508 return; 3509 } 3510 3511 moveToFront(); 3512 3513 // Shift all activities with this task up to the top 3514 // of the stack, keeping them in the same internal order. 3515 insertTaskAtTop(tr); 3516 3517 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3518 if (reason != null && 3519 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3520 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3521 ActivityRecord r = topRunningActivityLocked(null); 3522 if (r != null) { 3523 mNoAnimActivities.add(r); 3524 } 3525 ActivityOptions.abort(options); 3526 } else { 3527 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3528 } 3529 3530 mWindowManager.moveTaskToTop(tr.taskId); 3531 3532 mStackSupervisor.resumeTopActivitiesLocked(); 3533 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3534 3535 if (VALIDATE_TOKENS) { 3536 validateAppTokensLocked(); 3537 } 3538 } 3539 3540 /** 3541 * Worker method for rearranging history stack. Implements the function of moving all 3542 * activities for a specific task (gathering them if disjoint) into a single group at the 3543 * bottom of the stack. 3544 * 3545 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3546 * to premeptively cancel the move. 3547 * 3548 * @param taskId The taskId to collect and move to the bottom. 3549 * @return Returns true if the move completed, false if not. 3550 */ 3551 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3552 final TaskRecord tr = taskForIdLocked(taskId); 3553 if (tr == null) { 3554 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3555 return false; 3556 } 3557 3558 Slog.i(TAG, "moveTaskToBack: " + tr); 3559 3560 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3561 3562 // If we have a watcher, preflight the move before committing to it. First check 3563 // for *other* available tasks, but if none are available, then try again allowing the 3564 // current task to be selected. 3565 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3566 ActivityRecord next = topRunningActivityLocked(null, taskId); 3567 if (next == null) { 3568 next = topRunningActivityLocked(null, 0); 3569 } 3570 if (next != null) { 3571 // ask watcher if this is allowed 3572 boolean moveOK = true; 3573 try { 3574 moveOK = mService.mController.activityResuming(next.packageName); 3575 } catch (RemoteException e) { 3576 mService.mController = null; 3577 Watchdog.getInstance().setActivityController(null); 3578 } 3579 if (!moveOK) { 3580 return false; 3581 } 3582 } 3583 } 3584 3585 if (DEBUG_TRANSITION) Slog.v(TAG, 3586 "Prepare to back transition: task=" + taskId); 3587 3588 mTaskHistory.remove(tr); 3589 mTaskHistory.add(0, tr); 3590 updateTaskMovement(tr, false); 3591 3592 // There is an assumption that moving a task to the back moves it behind the home activity. 3593 // We make sure here that some activity in the stack will launch home. 3594 int numTasks = mTaskHistory.size(); 3595 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3596 final TaskRecord task = mTaskHistory.get(taskNdx); 3597 if (task.isOverHomeStack()) { 3598 break; 3599 } 3600 if (taskNdx == 1) { 3601 // Set the last task before tr to go to home. 3602 task.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3603 } 3604 } 3605 3606 if (reason != null && 3607 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3608 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3609 ActivityRecord r = topRunningActivityLocked(null); 3610 if (r != null) { 3611 mNoAnimActivities.add(r); 3612 } 3613 } else { 3614 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3615 } 3616 mWindowManager.moveTaskToBottom(taskId); 3617 3618 if (VALIDATE_TOKENS) { 3619 validateAppTokensLocked(); 3620 } 3621 3622 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3623 if (task == tr && tr.isOverHomeStack() || numTasks <= 1 && isOnHomeDisplay()) { 3624 if (!mService.mBooting && !mService.mBooted) { 3625 // Not ready yet! 3626 return false; 3627 } 3628 final int taskToReturnTo = tr.getTaskToReturnTo(); 3629 tr.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 3630 return mStackSupervisor.resumeHomeStackTask(taskToReturnTo, null); 3631 } 3632 3633 mStackSupervisor.resumeTopActivitiesLocked(); 3634 return true; 3635 } 3636 3637 static final void logStartActivity(int tag, ActivityRecord r, 3638 TaskRecord task) { 3639 final Uri data = r.intent.getData(); 3640 final String strData = data != null ? data.toSafeString() : null; 3641 3642 EventLog.writeEvent(tag, 3643 r.userId, System.identityHashCode(r), task.taskId, 3644 r.shortComponentName, r.intent.getAction(), 3645 r.intent.getType(), strData, r.intent.getFlags()); 3646 } 3647 3648 /** 3649 * Make sure the given activity matches the current configuration. Returns 3650 * false if the activity had to be destroyed. Returns true if the 3651 * configuration is the same, or the activity will remain running as-is 3652 * for whatever reason. Ensures the HistoryRecord is updated with the 3653 * correct configuration and all other bookkeeping is handled. 3654 */ 3655 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3656 int globalChanges) { 3657 if (mConfigWillChange) { 3658 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3659 "Skipping config check (will change): " + r); 3660 return true; 3661 } 3662 3663 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3664 "Ensuring correct configuration: " + r); 3665 3666 // Short circuit: if the two configurations are the exact same 3667 // object (the common case), then there is nothing to do. 3668 Configuration newConfig = mService.mConfiguration; 3669 if (r.configuration == newConfig && !r.forceNewConfig) { 3670 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3671 "Configuration unchanged in " + r); 3672 return true; 3673 } 3674 3675 // We don't worry about activities that are finishing. 3676 if (r.finishing) { 3677 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3678 "Configuration doesn't matter in finishing " + r); 3679 r.stopFreezingScreenLocked(false); 3680 return true; 3681 } 3682 3683 // Okay we now are going to make this activity have the new config. 3684 // But then we need to figure out how it needs to deal with that. 3685 Configuration oldConfig = r.configuration; 3686 r.configuration = newConfig; 3687 3688 // Determine what has changed. May be nothing, if this is a config 3689 // that has come back from the app after going idle. In that case 3690 // we just want to leave the official config object now in the 3691 // activity and do nothing else. 3692 final int changes = oldConfig.diff(newConfig); 3693 if (changes == 0 && !r.forceNewConfig) { 3694 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3695 "Configuration no differences in " + r); 3696 return true; 3697 } 3698 3699 // If the activity isn't currently running, just leave the new 3700 // configuration and it will pick that up next time it starts. 3701 if (r.app == null || r.app.thread == null) { 3702 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3703 "Configuration doesn't matter not running " + r); 3704 r.stopFreezingScreenLocked(false); 3705 r.forceNewConfig = false; 3706 return true; 3707 } 3708 3709 // Figure out how to handle the changes between the configurations. 3710 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3711 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3712 + Integer.toHexString(changes) + ", handles=0x" 3713 + Integer.toHexString(r.info.getRealConfigChanged()) 3714 + ", newConfig=" + newConfig); 3715 } 3716 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3717 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3718 r.configChangeFlags |= changes; 3719 r.startFreezingScreenLocked(r.app, globalChanges); 3720 r.forceNewConfig = false; 3721 if (r.app == null || r.app.thread == null) { 3722 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3723 "Config is destroying non-running " + r); 3724 destroyActivityLocked(r, true, "config"); 3725 } else if (r.state == ActivityState.PAUSING) { 3726 // A little annoying: we are waiting for this activity to 3727 // finish pausing. Let's not do anything now, but just 3728 // flag that it needs to be restarted when done pausing. 3729 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3730 "Config is skipping already pausing " + r); 3731 r.configDestroy = true; 3732 return true; 3733 } else if (r.state == ActivityState.RESUMED) { 3734 // Try to optimize this case: the configuration is changing 3735 // and we need to restart the top, resumed activity. 3736 // Instead of doing the normal handshaking, just say 3737 // "restart!". 3738 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3739 "Config is relaunching resumed " + r); 3740 relaunchActivityLocked(r, r.configChangeFlags, true); 3741 r.configChangeFlags = 0; 3742 } else { 3743 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3744 "Config is relaunching non-resumed " + r); 3745 relaunchActivityLocked(r, r.configChangeFlags, false); 3746 r.configChangeFlags = 0; 3747 } 3748 3749 // All done... tell the caller we weren't able to keep this 3750 // activity around. 3751 return false; 3752 } 3753 3754 // Default case: the activity can handle this new configuration, so 3755 // hand it over. Note that we don't need to give it the new 3756 // configuration, since we always send configuration changes to all 3757 // process when they happen so it can just use whatever configuration 3758 // it last got. 3759 if (r.app != null && r.app.thread != null) { 3760 try { 3761 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3762 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3763 } catch (RemoteException e) { 3764 // If process died, whatever. 3765 } 3766 } 3767 r.stopFreezingScreenLocked(false); 3768 3769 return true; 3770 } 3771 3772 private boolean relaunchActivityLocked(ActivityRecord r, 3773 int changes, boolean andResume) { 3774 List<ResultInfo> results = null; 3775 List<Intent> newIntents = null; 3776 if (andResume) { 3777 results = r.results; 3778 newIntents = r.newIntents; 3779 } 3780 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3781 + " with results=" + results + " newIntents=" + newIntents 3782 + " andResume=" + andResume); 3783 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3784 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3785 r.task.taskId, r.shortComponentName); 3786 3787 r.startFreezingScreenLocked(r.app, 0); 3788 3789 mStackSupervisor.removeChildActivityContainers(r); 3790 3791 try { 3792 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3793 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3794 + r); 3795 r.forceNewConfig = false; 3796 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3797 changes, !andResume, new Configuration(mService.mConfiguration)); 3798 // Note: don't need to call pauseIfSleepingLocked() here, because 3799 // the caller will only pass in 'andResume' if this activity is 3800 // currently resumed, which implies we aren't sleeping. 3801 } catch (RemoteException e) { 3802 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3803 } 3804 3805 if (andResume) { 3806 r.results = null; 3807 r.newIntents = null; 3808 r.state = ActivityState.RESUMED; 3809 } else { 3810 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3811 r.state = ActivityState.PAUSED; 3812 } 3813 3814 return true; 3815 } 3816 3817 boolean willActivityBeVisibleLocked(IBinder token) { 3818 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3819 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3820 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3821 final ActivityRecord r = activities.get(activityNdx); 3822 if (r.appToken == token) { 3823 return true; 3824 } 3825 if (r.fullscreen && !r.finishing) { 3826 return false; 3827 } 3828 } 3829 } 3830 final ActivityRecord r = ActivityRecord.forToken(token); 3831 if (r == null) { 3832 return false; 3833 } 3834 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3835 + " would have returned true for r=" + r); 3836 return !r.finishing; 3837 } 3838 3839 void closeSystemDialogsLocked() { 3840 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3841 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3842 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3843 final ActivityRecord r = activities.get(activityNdx); 3844 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3845 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3846 } 3847 } 3848 } 3849 } 3850 3851 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3852 boolean didSomething = false; 3853 TaskRecord lastTask = null; 3854 ComponentName homeActivity = null; 3855 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3856 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3857 int numActivities = activities.size(); 3858 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3859 ActivityRecord r = activities.get(activityNdx); 3860 final boolean samePackage = r.packageName.equals(name) 3861 || (name == null && r.userId == userId); 3862 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3863 && (samePackage || r.task == lastTask) 3864 && (r.app == null || evenPersistent || !r.app.persistent)) { 3865 if (!doit) { 3866 if (r.finishing) { 3867 // If this activity is just finishing, then it is not 3868 // interesting as far as something to stop. 3869 continue; 3870 } 3871 return true; 3872 } 3873 if (r.isHomeActivity()) { 3874 if (homeActivity != null && homeActivity.equals(r.realActivity)) { 3875 Slog.i(TAG, "Skip force-stop again " + r); 3876 continue; 3877 } else { 3878 homeActivity = r.realActivity; 3879 } 3880 } 3881 didSomething = true; 3882 Slog.i(TAG, " Force finishing activity " + r); 3883 if (samePackage) { 3884 if (r.app != null) { 3885 r.app.removed = true; 3886 } 3887 r.app = null; 3888 } 3889 lastTask = r.task; 3890 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3891 true)) { 3892 // r has been deleted from mActivities, accommodate. 3893 --numActivities; 3894 --activityNdx; 3895 } 3896 } 3897 } 3898 } 3899 return didSomething; 3900 } 3901 3902 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3903 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3904 final TaskRecord task = mTaskHistory.get(taskNdx); 3905 ActivityRecord r = null; 3906 ActivityRecord top = null; 3907 int numActivities = 0; 3908 int numRunning = 0; 3909 final ArrayList<ActivityRecord> activities = task.mActivities; 3910 if (activities.isEmpty()) { 3911 continue; 3912 } 3913 if (!allowed && !task.isHomeTask() && task.effectiveUid != callingUid) { 3914 continue; 3915 } 3916 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3917 r = activities.get(activityNdx); 3918 3919 // Initialize state for next task if needed. 3920 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3921 top = r; 3922 numActivities = numRunning = 0; 3923 } 3924 3925 // Add 'r' into the current task. 3926 numActivities++; 3927 if (r.app != null && r.app.thread != null) { 3928 numRunning++; 3929 } 3930 3931 if (localLOGV) Slog.v( 3932 TAG, r.intent.getComponent().flattenToShortString() 3933 + ": task=" + r.task); 3934 } 3935 3936 RunningTaskInfo ci = new RunningTaskInfo(); 3937 ci.id = task.taskId; 3938 ci.baseActivity = r.intent.getComponent(); 3939 ci.topActivity = top.intent.getComponent(); 3940 ci.lastActiveTime = task.lastActiveTime; 3941 3942 if (top.task != null) { 3943 ci.description = top.task.lastDescription; 3944 } 3945 ci.numActivities = numActivities; 3946 ci.numRunning = numRunning; 3947 //System.out.println( 3948 // "#" + maxNum + ": " + " descr=" + ci.description); 3949 list.add(ci); 3950 } 3951 } 3952 3953 public void unhandledBackLocked() { 3954 final int top = mTaskHistory.size() - 1; 3955 if (DEBUG_SWITCH) Slog.d( 3956 TAG, "Performing unhandledBack(): top activity at " + top); 3957 if (top >= 0) { 3958 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3959 int activityTop = activities.size() - 1; 3960 if (activityTop > 0) { 3961 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3962 "unhandled-back", true); 3963 } 3964 } 3965 } 3966 3967 /** 3968 * Reset local parameters because an app's activity died. 3969 * @param app The app of the activity that died. 3970 * @return result from removeHistoryRecordsForAppLocked. 3971 */ 3972 boolean handleAppDiedLocked(ProcessRecord app) { 3973 if (mPausingActivity != null && mPausingActivity.app == app) { 3974 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3975 "App died while pausing: " + mPausingActivity); 3976 mPausingActivity = null; 3977 } 3978 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3979 mLastPausedActivity = null; 3980 mLastNoHistoryActivity = null; 3981 } 3982 3983 return removeHistoryRecordsForAppLocked(app); 3984 } 3985 3986 void handleAppCrashLocked(ProcessRecord app) { 3987 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3988 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3989 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3990 final ActivityRecord r = activities.get(activityNdx); 3991 if (r.app == app) { 3992 Slog.w(TAG, " Force finishing activity " 3993 + r.intent.getComponent().flattenToShortString()); 3994 // Force the destroy to skip right to removal. 3995 r.app = null; 3996 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 3997 } 3998 } 3999 } 4000 } 4001 4002 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 4003 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 4004 boolean printed = false; 4005 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4006 final TaskRecord task = mTaskHistory.get(taskNdx); 4007 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 4008 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 4009 dumpClient, dumpPackage, needSep, header, 4010 " Task id #" + task.taskId); 4011 if (printed) { 4012 header = null; 4013 } 4014 } 4015 return printed; 4016 } 4017 4018 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 4019 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 4020 4021 if ("all".equals(name)) { 4022 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4023 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 4024 } 4025 } else if ("top".equals(name)) { 4026 final int top = mTaskHistory.size() - 1; 4027 if (top >= 0) { 4028 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 4029 int listTop = list.size() - 1; 4030 if (listTop >= 0) { 4031 activities.add(list.get(listTop)); 4032 } 4033 } 4034 } else { 4035 ItemMatcher matcher = new ItemMatcher(); 4036 matcher.build(name); 4037 4038 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4039 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 4040 if (matcher.match(r1, r1.intent.getComponent())) { 4041 activities.add(r1); 4042 } 4043 } 4044 } 4045 } 4046 4047 return activities; 4048 } 4049 4050 ActivityRecord restartPackage(String packageName) { 4051 ActivityRecord starting = topRunningActivityLocked(null); 4052 4053 // All activities that came from the package must be 4054 // restarted as if there was a config change. 4055 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4056 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 4057 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 4058 final ActivityRecord a = activities.get(activityNdx); 4059 if (a.info.packageName.equals(packageName)) { 4060 a.forceNewConfig = true; 4061 if (starting != null && a == starting && a.visible) { 4062 a.startFreezingScreenLocked(starting.app, 4063 ActivityInfo.CONFIG_SCREEN_LAYOUT); 4064 } 4065 } 4066 } 4067 } 4068 4069 return starting; 4070 } 4071 4072 void removeTask(TaskRecord task) { 4073 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 4074 mWindowManager.removeTask(task.taskId); 4075 final ActivityRecord r = mResumedActivity; 4076 if (r != null && r.task == task) { 4077 mResumedActivity = null; 4078 } 4079 4080 final int taskNdx = mTaskHistory.indexOf(task); 4081 final int topTaskNdx = mTaskHistory.size() - 1; 4082 if (task.isOverHomeStack() && taskNdx < topTaskNdx) { 4083 final TaskRecord nextTask = mTaskHistory.get(taskNdx + 1); 4084 if (!nextTask.isOverHomeStack()) { 4085 nextTask.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 4086 } 4087 } 4088 mTaskHistory.remove(task); 4089 updateTaskMovement(task, true); 4090 4091 if (task.mActivities.isEmpty()) { 4092 final boolean isVoiceSession = task.voiceSession != null; 4093 if (isVoiceSession) { 4094 try { 4095 task.voiceSession.taskFinished(task.intent, task.taskId); 4096 } catch (RemoteException e) { 4097 } 4098 } 4099 if (task.autoRemoveFromRecents() || isVoiceSession) { 4100 // Task creator asked to remove this when done, or this task was a voice 4101 // interaction, so it should not remain on the recent tasks list. 4102 mService.mRecentTasks.remove(task); 4103 task.removedFromRecents(mService.mTaskPersister); 4104 } 4105 } 4106 4107 if (mTaskHistory.isEmpty()) { 4108 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 4109 if (isOnHomeDisplay()) { 4110 mStackSupervisor.moveHomeStack(!isHomeStack()); 4111 } 4112 if (mStacks != null) { 4113 mStacks.remove(this); 4114 mStacks.add(0, this); 4115 } 4116 mActivityContainer.onTaskListEmptyLocked(); 4117 } 4118 } 4119 4120 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 4121 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 4122 boolean toTop) { 4123 TaskRecord task = new TaskRecord(mService, taskId, info, intent, voiceSession, 4124 voiceInteractor); 4125 addTask(task, toTop, false); 4126 return task; 4127 } 4128 4129 ArrayList<TaskRecord> getAllTasks() { 4130 return new ArrayList<TaskRecord>(mTaskHistory); 4131 } 4132 4133 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 4134 task.stack = this; 4135 if (toTop) { 4136 insertTaskAtTop(task); 4137 } else { 4138 mTaskHistory.add(0, task); 4139 updateTaskMovement(task, false); 4140 } 4141 if (!moving && task.voiceSession != null) { 4142 try { 4143 task.voiceSession.taskStarted(task.intent, task.taskId); 4144 } catch (RemoteException e) { 4145 } 4146 } 4147 } 4148 4149 public int getStackId() { 4150 return mStackId; 4151 } 4152 4153 @Override 4154 public String toString() { 4155 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 4156 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 4157 } 4158 } 4159