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