ActivityStack.java revision a4e102ee580282dc7abeb22f4a025813e53b9431
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 17package com.android.server.am; 18 19import static com.android.server.am.ActivityManagerService.TAG; 20import static com.android.server.am.ActivityManagerService.localLOGV; 21import static com.android.server.am.ActivityManagerService.DEBUG_CLEANUP; 22import static com.android.server.am.ActivityManagerService.DEBUG_CONFIGURATION; 23import static com.android.server.am.ActivityManagerService.DEBUG_PAUSE; 24import static com.android.server.am.ActivityManagerService.DEBUG_RESULTS; 25import static com.android.server.am.ActivityManagerService.DEBUG_STACK; 26import static com.android.server.am.ActivityManagerService.DEBUG_SWITCH; 27import static com.android.server.am.ActivityManagerService.DEBUG_TASKS; 28import static com.android.server.am.ActivityManagerService.DEBUG_TRANSITION; 29import static com.android.server.am.ActivityManagerService.DEBUG_USER_LEAVING; 30import static com.android.server.am.ActivityManagerService.DEBUG_VISBILITY; 31import static com.android.server.am.ActivityManagerService.VALIDATE_TOKENS; 32 33import static com.android.server.am.ActivityRecord.HOME_ACTIVITY_TYPE; 34import static com.android.server.am.ActivityRecord.APPLICATION_ACTIVITY_TYPE; 35 36import static com.android.server.am.ActivityStackSupervisor.DEBUG_ADD_REMOVE; 37import static com.android.server.am.ActivityStackSupervisor.DEBUG_APP; 38import static com.android.server.am.ActivityStackSupervisor.DEBUG_CONTAINERS; 39import static com.android.server.am.ActivityStackSupervisor.DEBUG_RELEASE; 40import static com.android.server.am.ActivityStackSupervisor.DEBUG_SAVED_STATE; 41import static com.android.server.am.ActivityStackSupervisor.DEBUG_SCREENSHOTS; 42import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 43import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 44 45import android.util.ArraySet; 46import com.android.internal.app.IVoiceInteractor; 47import com.android.internal.os.BatteryStatsImpl; 48import com.android.server.Watchdog; 49import com.android.server.am.ActivityManagerService.ItemMatcher; 50import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 51import com.android.server.wm.AppTransition; 52import com.android.server.wm.TaskGroup; 53import com.android.server.wm.WindowManagerService; 54 55import android.app.Activity; 56import android.app.ActivityManager; 57import android.app.ActivityOptions; 58import android.app.AppGlobals; 59import android.app.IActivityController; 60import android.app.ResultInfo; 61import android.app.ActivityManager.RunningTaskInfo; 62import android.content.ComponentName; 63import android.content.Intent; 64import android.content.pm.ActivityInfo; 65import android.content.pm.PackageManager; 66import android.content.res.Configuration; 67import android.content.res.Resources; 68import android.graphics.Bitmap; 69import android.net.Uri; 70import android.os.Binder; 71import android.os.Bundle; 72import android.os.Debug; 73import android.os.Handler; 74import android.os.IBinder; 75import android.os.Looper; 76import android.os.Message; 77import android.os.PersistableBundle; 78import android.os.RemoteException; 79import android.os.SystemClock; 80import android.os.Trace; 81import android.os.UserHandle; 82import android.service.voice.IVoiceInteractionSession; 83import android.util.EventLog; 84import android.util.Slog; 85import android.view.Display; 86 87import java.io.FileDescriptor; 88import java.io.PrintWriter; 89import java.lang.ref.WeakReference; 90import java.util.ArrayList; 91import java.util.Iterator; 92import java.util.List; 93import java.util.Objects; 94 95/** 96 * State and management of a single stack of activities. 97 */ 98final class ActivityStack { 99 100 // Ticks during which we check progress while waiting for an app to launch. 101 static final int LAUNCH_TICK = 500; 102 103 // How long we wait until giving up on the last activity to pause. This 104 // is short because it directly impacts the responsiveness of starting the 105 // next activity. 106 static final int PAUSE_TIMEOUT = 500; 107 108 // How long we wait for the activity to tell us it has stopped before 109 // giving up. This is a good amount of time because we really need this 110 // from the application in order to get its saved state. 111 static final int STOP_TIMEOUT = 10*1000; 112 113 // How long we wait until giving up on an activity telling us it has 114 // finished destroying itself. 115 static final int DESTROY_TIMEOUT = 10*1000; 116 117 // How long until we reset a task when the user returns to it. Currently 118 // disabled. 119 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 120 121 // How long between activity launches that we consider safe to not warn 122 // the user about an unexpected activity being launched on top. 123 static final long START_WARN_TIME = 5*1000; 124 125 // Set to false to disable the preview that is shown while a new activity 126 // is being started. 127 static final boolean SHOW_APP_STARTING_PREVIEW = true; 128 129 // How long to wait for all background Activities to redraw following a call to 130 // convertToTranslucent(). 131 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 132 133 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 134 135 enum ActivityState { 136 INITIALIZING, 137 RESUMED, 138 PAUSING, 139 PAUSED, 140 STOPPING, 141 STOPPED, 142 FINISHING, 143 DESTROYING, 144 DESTROYED 145 } 146 147 final ActivityManagerService mService; 148 final WindowManagerService mWindowManager; 149 150 /** 151 * The back history of all previous (and possibly still 152 * running) activities. It contains #TaskRecord objects. 153 */ 154 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 155 156 /** 157 * Used for validating app tokens with window manager. 158 */ 159 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 160 161 /** 162 * List of running activities, sorted by recent usage. 163 * The first entry in the list is the least recently used. 164 * It contains HistoryRecord objects. 165 */ 166 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 167 168 /** 169 * Animations that for the current transition have requested not to 170 * be considered for the transition animation. 171 */ 172 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 173 174 /** 175 * When we are in the process of pausing an activity, before starting the 176 * next one, this variable holds the activity that is currently being paused. 177 */ 178 ActivityRecord mPausingActivity = null; 179 180 /** 181 * This is the last activity that we put into the paused state. This is 182 * used to determine if we need to do an activity transition while sleeping, 183 * when we normally hold the top activity paused. 184 */ 185 ActivityRecord mLastPausedActivity = null; 186 187 /** 188 * Activities that specify No History must be removed once the user navigates away from them. 189 * If the device goes to sleep with such an activity in the paused state then we save it here 190 * and finish it later if another activity replaces it on wakeup. 191 */ 192 ActivityRecord mLastNoHistoryActivity = null; 193 194 /** 195 * Current activity that is resumed, or null if there is none. 196 */ 197 ActivityRecord mResumedActivity = null; 198 199 /** 200 * This is the last activity that has been started. It is only used to 201 * identify when multiple activities are started at once so that the user 202 * can be warned they may not be in the activity they think they are. 203 */ 204 ActivityRecord mLastStartedActivity = null; 205 206 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 207 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 208 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 209 // Activity in mTranslucentActivityWaiting is notified via 210 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 211 // background activity being drawn then the same call will be made with a true value. 212 ActivityRecord mTranslucentActivityWaiting = null; 213 private ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 214 new ArrayList<ActivityRecord>(); 215 216 /** 217 * Set when we know we are going to be calling updateConfiguration() 218 * soon, so want to skip intermediate config checks. 219 */ 220 boolean mConfigWillChange; 221 222 long mLaunchStartTime = 0; 223 long mFullyDrawnStartTime = 0; 224 225 /** 226 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 227 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 228 */ 229 private ActivityRecord mLastScreenshotActivity = null; 230 private Bitmap mLastScreenshotBitmap = null; 231 232 int mCurrentUser; 233 234 final int mStackId; 235 final ActivityContainer mActivityContainer; 236 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 237 ArrayList<ActivityStack> mStacks; 238 /** The attached Display's unique identifier, or -1 if detached */ 239 int mDisplayId; 240 241 /** Run all ActivityStacks through this */ 242 final ActivityStackSupervisor mStackSupervisor; 243 244 /** Used to keep resumeTopActivityLocked() from being entered recursively */ 245 private boolean inResumeTopActivity; 246 247 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 248 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 249 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 250 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 251 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 252 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 253 static final int RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG = 254 ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 7; 255 256 static class ScheduleDestroyArgs { 257 final ProcessRecord mOwner; 258 final String mReason; 259 ScheduleDestroyArgs(ProcessRecord owner, String reason) { 260 mOwner = owner; 261 mReason = reason; 262 } 263 } 264 265 final Handler mHandler; 266 267 final class ActivityStackHandler extends Handler { 268 //public Handler() { 269 // if (localLOGV) Slog.v(TAG, "Handler started!"); 270 //} 271 ActivityStackHandler(Looper looper) { 272 super(looper); 273 } 274 275 @Override 276 public void handleMessage(Message msg) { 277 switch (msg.what) { 278 case PAUSE_TIMEOUT_MSG: { 279 ActivityRecord r = (ActivityRecord)msg.obj; 280 // We don't at this point know if the activity is fullscreen, 281 // so we need to be conservative and assume it isn't. 282 Slog.w(TAG, "Activity pause timeout for " + r); 283 synchronized (mService) { 284 if (r.app != null) { 285 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 286 } 287 activityPausedLocked(r.appToken, true); 288 } 289 } break; 290 case LAUNCH_TICK_MSG: { 291 ActivityRecord r = (ActivityRecord)msg.obj; 292 synchronized (mService) { 293 if (r.continueLaunchTickingLocked()) { 294 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 295 } 296 } 297 } break; 298 case DESTROY_TIMEOUT_MSG: { 299 ActivityRecord r = (ActivityRecord)msg.obj; 300 // We don't at this point know if the activity is fullscreen, 301 // so we need to be conservative and assume it isn't. 302 Slog.w(TAG, "Activity destroy timeout for " + r); 303 synchronized (mService) { 304 activityDestroyedLocked(r != null ? r.appToken : null); 305 } 306 } break; 307 case STOP_TIMEOUT_MSG: { 308 ActivityRecord r = (ActivityRecord)msg.obj; 309 // We don't at this point know if the activity is fullscreen, 310 // so we need to be conservative and assume it isn't. 311 Slog.w(TAG, "Activity stop timeout for " + r); 312 synchronized (mService) { 313 if (r.isInHistory()) { 314 activityStoppedLocked(r, null, null, null); 315 } 316 } 317 } break; 318 case DESTROY_ACTIVITIES_MSG: { 319 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 320 synchronized (mService) { 321 destroyActivitiesLocked(args.mOwner, args.mReason); 322 } 323 } break; 324 case TRANSLUCENT_TIMEOUT_MSG: { 325 synchronized (mService) { 326 notifyActivityDrawnLocked(null); 327 } 328 } break; 329 case RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG: { 330 synchronized (mService) { 331 final ActivityRecord r = getVisibleBehindActivity(); 332 Slog.e(TAG, "Timeout waiting for cancelVisibleBehind player=" + r); 333 if (r != null) { 334 mService.killAppAtUsersRequest(r.app, null); 335 } 336 } 337 } break; 338 } 339 } 340 } 341 342 int numActivities() { 343 int count = 0; 344 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 345 count += mTaskHistory.get(taskNdx).mActivities.size(); 346 } 347 return count; 348 } 349 350 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 351 mActivityContainer = activityContainer; 352 mStackSupervisor = activityContainer.getOuter(); 353 mService = mStackSupervisor.mService; 354 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 355 mWindowManager = mService.mWindowManager; 356 mStackId = activityContainer.mStackId; 357 mCurrentUser = mService.mCurrentUserId; 358 } 359 360 /** 361 * Checks whether the userid is a profile of the current user. 362 */ 363 private boolean isCurrentProfileLocked(int userId) { 364 if (userId == mCurrentUser) return true; 365 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 366 if (mService.mCurrentProfileIds[i] == userId) return true; 367 } 368 return false; 369 } 370 371 boolean okToShowLocked(ActivityRecord r) { 372 return isCurrentProfileLocked(r.userId) 373 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 374 } 375 376 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 377 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 378 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 379 if (r != null) { 380 return r; 381 } 382 } 383 return null; 384 } 385 386 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 387 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 388 final TaskRecord task = mTaskHistory.get(taskNdx); 389 final ArrayList<ActivityRecord> activities = task.mActivities; 390 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 391 ActivityRecord r = activities.get(activityNdx); 392 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 393 return r; 394 } 395 } 396 } 397 return null; 398 } 399 400 /** 401 * This is a simplified version of topRunningActivityLocked that provides a number of 402 * optional skip-over modes. It is intended for use with the ActivityController hook only. 403 * 404 * @param token If non-null, any history records matching this token will be skipped. 405 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 406 * 407 * @return Returns the HistoryRecord of the next activity on the stack. 408 */ 409 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 410 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 411 TaskRecord task = mTaskHistory.get(taskNdx); 412 if (task.taskId == taskId) { 413 continue; 414 } 415 ArrayList<ActivityRecord> activities = task.mActivities; 416 for (int i = activities.size() - 1; i >= 0; --i) { 417 final ActivityRecord r = activities.get(i); 418 // Note: the taskId check depends on real taskId fields being non-zero 419 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 420 return r; 421 } 422 } 423 } 424 return null; 425 } 426 427 final ActivityRecord topActivity() { 428 // Iterate to find the first non-empty task stack. Note that this code can 429 // be simplified once we stop storing tasks with empty mActivities lists. 430 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 431 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 432 final int topActivityNdx = activities.size() - 1; 433 if (topActivityNdx >= 0) { 434 return activities.get(topActivityNdx); 435 } 436 } 437 return null; 438 } 439 440 final TaskRecord topTask() { 441 final int size = mTaskHistory.size(); 442 if (size > 0) { 443 return mTaskHistory.get(size - 1); 444 } 445 return null; 446 } 447 448 TaskRecord taskForIdLocked(int id) { 449 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 450 final TaskRecord task = mTaskHistory.get(taskNdx); 451 if (task.taskId == id) { 452 return task; 453 } 454 } 455 return null; 456 } 457 458 ActivityRecord isInStackLocked(IBinder token) { 459 final ActivityRecord r = ActivityRecord.forToken(token); 460 if (r != null) { 461 final TaskRecord task = r.task; 462 if (task != null && task.mActivities.contains(r) && mTaskHistory.contains(task)) { 463 if (task.stack != this) Slog.w(TAG, 464 "Illegal state! task does not point to stack it is in."); 465 return r; 466 } 467 } 468 return null; 469 } 470 471 final boolean updateLRUListLocked(ActivityRecord r) { 472 final boolean hadit = mLRUActivities.remove(r); 473 mLRUActivities.add(r); 474 return hadit; 475 } 476 477 final boolean isHomeStack() { 478 return mStackId == HOME_STACK_ID; 479 } 480 481 final boolean isOnHomeDisplay() { 482 return isAttached() && 483 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 484 } 485 486 final void moveToFront() { 487 if (isAttached()) { 488 if (isOnHomeDisplay()) { 489 mStackSupervisor.moveHomeStack(isHomeStack()); 490 } 491 mStacks.remove(this); 492 mStacks.add(this); 493 } 494 } 495 496 final boolean isAttached() { 497 return mStacks != null; 498 } 499 500 /** 501 * Returns the top activity in any existing task matching the given 502 * Intent. Returns null if no such task is found. 503 */ 504 ActivityRecord findTaskLocked(ActivityRecord target) { 505 Intent intent = target.intent; 506 ActivityInfo info = target.info; 507 ComponentName cls = intent.getComponent(); 508 if (info.targetActivity != null) { 509 cls = new ComponentName(info.packageName, info.targetActivity); 510 } 511 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 512 boolean isDocument = intent != null & intent.isDocument(); 513 // If documentData is non-null then it must match the existing task data. 514 Uri documentData = isDocument ? intent.getData() : null; 515 516 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 517 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 518 final TaskRecord task = mTaskHistory.get(taskNdx); 519 if (task.voiceSession != null) { 520 // We never match voice sessions; those always run independently. 521 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 522 continue; 523 } 524 if (task.userId != userId) { 525 // Looking for a different task. 526 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 527 continue; 528 } 529 final ActivityRecord r = task.getTopActivity(); 530 if (r == null || r.finishing || r.userId != userId || 531 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 532 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 533 continue; 534 } 535 536 final Intent taskIntent = task.intent; 537 final Intent affinityIntent = task.affinityIntent; 538 final boolean taskIsDocument; 539 final Uri taskDocumentData; 540 if (taskIntent != null && taskIntent.isDocument()) { 541 taskIsDocument = true; 542 taskDocumentData = taskIntent.getData(); 543 } else if (affinityIntent != null && affinityIntent.isDocument()) { 544 taskIsDocument = true; 545 taskDocumentData = affinityIntent.getData(); 546 } else { 547 taskIsDocument = false; 548 taskDocumentData = null; 549 } 550 551 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 552 + taskIntent.getComponent().flattenToShortString() 553 + "/aff=" + r.task.affinity + " to new cls=" 554 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 555 if (!isDocument && !taskIsDocument && task.affinity != null) { 556 if (task.affinity.equals(target.taskAffinity)) { 557 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 558 return r; 559 } 560 } else if (taskIntent != null && taskIntent.getComponent() != null && 561 taskIntent.getComponent().compareTo(cls) == 0 && 562 Objects.equals(documentData, taskDocumentData)) { 563 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 564 //dump(); 565 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 566 + r.intent); 567 return r; 568 } else if (affinityIntent != null && affinityIntent.getComponent() != null && 569 affinityIntent.getComponent().compareTo(cls) == 0 && 570 Objects.equals(documentData, taskDocumentData)) { 571 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 572 //dump(); 573 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 574 + r.intent); 575 return r; 576 } else if (DEBUG_TASKS) { 577 Slog.d(TAG, "Not a match: " + task); 578 } 579 } 580 581 return null; 582 } 583 584 /** 585 * Returns the first activity (starting from the top of the stack) that 586 * is the same as the given activity. Returns null if no such activity 587 * is found. 588 */ 589 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 590 ComponentName cls = intent.getComponent(); 591 if (info.targetActivity != null) { 592 cls = new ComponentName(info.packageName, info.targetActivity); 593 } 594 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 595 596 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 597 TaskRecord task = mTaskHistory.get(taskNdx); 598 if (!isCurrentProfileLocked(task.userId)) { 599 return null; 600 } 601 final ArrayList<ActivityRecord> activities = task.mActivities; 602 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 603 ActivityRecord r = activities.get(activityNdx); 604 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 605 //Slog.i(TAG, "Found matching class!"); 606 //dump(); 607 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 608 return r; 609 } 610 } 611 } 612 613 return null; 614 } 615 616 /* 617 * Move the activities around in the stack to bring a user to the foreground. 618 */ 619 final void switchUserLocked(int userId) { 620 if (mCurrentUser == userId) { 621 return; 622 } 623 mCurrentUser = userId; 624 625 // Move userId's tasks to the top. 626 int index = mTaskHistory.size(); 627 for (int i = 0; i < index; ) { 628 TaskRecord task = mTaskHistory.get(i); 629 if (isCurrentProfileLocked(task.userId)) { 630 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 631 " moving " + task + " to top"); 632 mTaskHistory.remove(i); 633 mTaskHistory.add(task); 634 --index; 635 // Use same value for i. 636 } else { 637 ++i; 638 } 639 } 640 if (VALIDATE_TOKENS) { 641 validateAppTokensLocked(); 642 } 643 } 644 645 void minimalResumeActivityLocked(ActivityRecord r) { 646 r.state = ActivityState.RESUMED; 647 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 648 + " (starting new instance)"); 649 r.stopped = false; 650 mResumedActivity = r; 651 r.task.touchActiveTime(); 652 mService.addRecentTaskLocked(r.task); 653 completeResumeLocked(r); 654 mStackSupervisor.checkReadyForSleepLocked(); 655 setLaunchTime(r); 656 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 657 } 658 659 private void startLaunchTraces() { 660 if (mFullyDrawnStartTime != 0) { 661 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 662 } 663 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 664 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 665 } 666 667 private void stopFullyDrawnTraceIfNeeded() { 668 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 669 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 670 mFullyDrawnStartTime = 0; 671 } 672 } 673 674 void setLaunchTime(ActivityRecord r) { 675 if (r.displayStartTime == 0) { 676 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 677 if (mLaunchStartTime == 0) { 678 startLaunchTraces(); 679 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 680 } 681 } else if (mLaunchStartTime == 0) { 682 startLaunchTraces(); 683 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 684 } 685 } 686 687 void clearLaunchTime(ActivityRecord r) { 688 // Make sure that there is no activity waiting for this to launch. 689 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 690 r.displayStartTime = r.fullyDrawnStartTime = 0; 691 } else { 692 mStackSupervisor.removeTimeoutsForActivityLocked(r); 693 mStackSupervisor.scheduleIdleTimeoutLocked(r); 694 } 695 } 696 697 void awakeFromSleepingLocked() { 698 // Ensure activities are no longer sleeping. 699 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 700 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 701 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 702 activities.get(activityNdx).setSleeping(false); 703 } 704 } 705 } 706 707 /** 708 * @return true if something must be done before going to sleep. 709 */ 710 boolean checkReadyForSleepLocked() { 711 if (mResumedActivity != null) { 712 // Still have something resumed; can't sleep until it is paused. 713 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 714 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 715 startPausingLocked(false, true, false, false); 716 return true; 717 } 718 if (mPausingActivity != null) { 719 // Still waiting for something to pause; can't sleep yet. 720 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 721 return true; 722 } 723 724 return false; 725 } 726 727 void goToSleep() { 728 ensureActivitiesVisibleLocked(null, 0); 729 730 // Make sure any stopped but visible activities are now sleeping. 731 // This ensures that the activity's onStop() is called. 732 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 733 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 734 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 735 final ActivityRecord r = activities.get(activityNdx); 736 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 737 r.setSleeping(true); 738 } 739 } 740 } 741 } 742 743 /** 744 * This resets the saved state from the last screenshot, forcing a new screenshot to be taken 745 * again when requested. 746 */ 747 private void invalidateLastScreenshot() { 748 mLastScreenshotActivity = null; 749 if (mLastScreenshotBitmap != null) { 750 mLastScreenshotBitmap.recycle(); 751 } 752 mLastScreenshotBitmap = null; 753 } 754 755 public final Bitmap screenshotActivities(ActivityRecord who) { 756 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "screenshotActivities: " + who); 757 if (who.noDisplay) { 758 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tNo display"); 759 return null; 760 } 761 762 if (isHomeStack()) { 763 // This is an optimization -- since we never show Home or Recents within Recents itself, 764 // we can just go ahead and skip taking the screenshot if this is the home stack. In 765 // the case where the most recent task is not the task that was supplied, then the stack 766 // has changed, so invalidate the last screenshot(). 767 invalidateLastScreenshot(); 768 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tIs Home stack? " + isHomeStack()); 769 return null; 770 } 771 772 int w = mService.mThumbnailWidth; 773 int h = mService.mThumbnailHeight; 774 if (w > 0) { 775 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 776 || mLastScreenshotActivity.state == ActivityState.RESUMED 777 || mLastScreenshotBitmap.getWidth() != w 778 || mLastScreenshotBitmap.getHeight() != h) { 779 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tUpdating screenshot"); 780 mLastScreenshotActivity = who; 781 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 782 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 783 } 784 if (mLastScreenshotBitmap != null) { 785 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tReusing last screenshot"); 786 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 787 } 788 } 789 Slog.e(TAG, "Invalid thumbnail dimensions: " + w + "x" + h); 790 return null; 791 } 792 793 /** 794 * Start pausing the currently resumed activity. It is an error to call this if there 795 * is already an activity being paused or there is no resumed activity. 796 * 797 * @param userLeaving True if this should result in an onUserLeaving to the current activity. 798 * @param uiSleeping True if this is happening with the user interface going to sleep (the 799 * screen turning off). 800 * @param resuming True if this is being called as part of resuming the top activity, so 801 * we shouldn't try to instigate a resume here. 802 * @param dontWait True if the caller does not want to wait for the pause to complete. If 803 * set to true, we will immediately complete the pause here before returning. 804 * @return Returns true if an activity now is in the PAUSING state, and we are waiting for 805 * it to tell us when it is done. 806 */ 807 final boolean startPausingLocked(boolean userLeaving, boolean uiSleeping, boolean resuming, 808 boolean dontWait) { 809 if (mPausingActivity != null) { 810 Slog.wtf(TAG, "Going to pause when pause is already pending for " + mPausingActivity); 811 completePauseLocked(false); 812 } 813 ActivityRecord prev = mResumedActivity; 814 if (prev == null) { 815 if (!resuming) { 816 Slog.wtf(TAG, "Trying to pause when nothing is resumed"); 817 mStackSupervisor.resumeTopActivitiesLocked(); 818 } 819 return false; 820 } 821 822 if (mActivityContainer.mParentActivity == null) { 823 // Top level stack, not a child. Look for child stacks. 824 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping, resuming, dontWait); 825 } 826 827 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 828 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 829 mResumedActivity = null; 830 mPausingActivity = prev; 831 mLastPausedActivity = prev; 832 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 833 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 834 prev.state = ActivityState.PAUSING; 835 prev.task.touchActiveTime(); 836 clearLaunchTime(prev); 837 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 838 if (mService.mHasRecents && (next == null || next.noDisplay || next.task != prev.task)) { 839 prev.updateThumbnail(screenshotActivities(prev), null); 840 } 841 stopFullyDrawnTraceIfNeeded(); 842 843 mService.updateCpuStats(); 844 845 if (prev.app != null && prev.app.thread != null) { 846 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 847 try { 848 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 849 prev.userId, System.identityHashCode(prev), 850 prev.shortComponentName); 851 mService.updateUsageStats(prev, false); 852 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 853 userLeaving, prev.configChangeFlags, dontWait); 854 } catch (Exception e) { 855 // Ignore exception, if process died other code will cleanup. 856 Slog.w(TAG, "Exception thrown during pause", e); 857 mPausingActivity = null; 858 mLastPausedActivity = null; 859 mLastNoHistoryActivity = null; 860 } 861 } else { 862 mPausingActivity = null; 863 mLastPausedActivity = null; 864 mLastNoHistoryActivity = null; 865 } 866 867 // If we are not going to sleep, we want to ensure the device is 868 // awake until the next activity is started. 869 if (!mService.isSleepingOrShuttingDown()) { 870 mStackSupervisor.acquireLaunchWakelock(); 871 } 872 873 if (mPausingActivity != null) { 874 // Have the window manager pause its key dispatching until the new 875 // activity has started. If we're pausing the activity just because 876 // the screen is being turned off and the UI is sleeping, don't interrupt 877 // key dispatch; the same activity will pick it up again on wakeup. 878 if (!uiSleeping) { 879 prev.pauseKeyDispatchingLocked(); 880 } else { 881 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 882 } 883 884 if (dontWait) { 885 // If the caller said they don't want to wait for the pause, then complete 886 // the pause now. 887 completePauseLocked(false); 888 return false; 889 890 } else { 891 // Schedule a pause timeout in case the app doesn't respond. 892 // We don't give it much time because this directly impacts the 893 // responsiveness seen by the user. 894 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 895 msg.obj = prev; 896 prev.pauseTime = SystemClock.uptimeMillis(); 897 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 898 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 899 return true; 900 } 901 902 } else { 903 // This activity failed to schedule the 904 // pause, so just treat it as being paused now. 905 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 906 if (!resuming) { 907 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 908 } 909 return false; 910 } 911 } 912 913 final void activityPausedLocked(IBinder token, boolean timeout) { 914 if (DEBUG_PAUSE) Slog.v( 915 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 916 917 final ActivityRecord r = isInStackLocked(token); 918 if (r != null) { 919 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 920 if (mPausingActivity == r) { 921 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 922 + (timeout ? " (due to timeout)" : " (pause complete)")); 923 completePauseLocked(true); 924 } else { 925 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 926 r.userId, System.identityHashCode(r), r.shortComponentName, 927 mPausingActivity != null 928 ? mPausingActivity.shortComponentName : "(none)"); 929 } 930 } 931 } 932 933 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, 934 PersistableBundle persistentState, CharSequence description) { 935 if (r.state != ActivityState.STOPPING) { 936 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 937 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 938 return; 939 } 940 if (persistentState != null) { 941 r.persistentState = persistentState; 942 mService.notifyTaskPersisterLocked(r.task, false); 943 } 944 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 945 if (icicle != null) { 946 // If icicle is null, this is happening due to a timeout, so we 947 // haven't really saved the state. 948 r.icicle = icicle; 949 r.haveState = true; 950 r.launchCount = 0; 951 r.updateThumbnail(null, description); 952 } 953 if (!r.stopped) { 954 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 955 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 956 r.stopped = true; 957 r.state = ActivityState.STOPPED; 958 if (mActivityContainer.mActivityDisplay.mVisibleBehindActivity == r) { 959 mStackSupervisor.requestVisibleBehindLocked(r, false); 960 } 961 if (r.finishing) { 962 r.clearOptionsLocked(); 963 } else { 964 if (r.configDestroy) { 965 destroyActivityLocked(r, true, "stop-config"); 966 mStackSupervisor.resumeTopActivitiesLocked(); 967 } else { 968 mStackSupervisor.updatePreviousProcessLocked(r); 969 } 970 } 971 } 972 } 973 974 private void completePauseLocked(boolean resumeNext) { 975 ActivityRecord prev = mPausingActivity; 976 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 977 978 if (prev != null) { 979 prev.state = ActivityState.PAUSED; 980 if (prev.finishing) { 981 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 982 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 983 } else if (prev.app != null) { 984 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 985 if (prev.waitingVisible) { 986 prev.waitingVisible = false; 987 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 988 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 989 TAG, "Complete pause, no longer waiting: " + prev); 990 } 991 if (prev.configDestroy) { 992 // The previous is being paused because the configuration 993 // is changing, which means it is actually stopping... 994 // To juggle the fact that we are also starting a new 995 // instance right now, we need to first completely stop 996 // the current instance before starting the new one. 997 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 998 destroyActivityLocked(prev, true, "pause-config"); 999 } else if (!hasVisibleBehindActivity()) { 1000 // If we were visible then resumeTopActivities will release resources before 1001 // stopping. 1002 mStackSupervisor.mStoppingActivities.add(prev); 1003 if (mStackSupervisor.mStoppingActivities.size() > 3 || 1004 prev.frontOfTask && mTaskHistory.size() <= 1) { 1005 // If we already have a few activities waiting to stop, 1006 // then give up on things going idle and start clearing 1007 // them out. Or if r is the last of activity of the last task the stack 1008 // will be empty and must be cleared immediately. 1009 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 1010 mStackSupervisor.scheduleIdleLocked(); 1011 } else { 1012 mStackSupervisor.checkReadyForSleepLocked(); 1013 } 1014 } 1015 } else { 1016 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 1017 prev = null; 1018 } 1019 mPausingActivity = null; 1020 } 1021 1022 if (resumeNext) { 1023 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 1024 if (!mService.isSleepingOrShuttingDown()) { 1025 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 1026 } else { 1027 mStackSupervisor.checkReadyForSleepLocked(); 1028 ActivityRecord top = topStack.topRunningActivityLocked(null); 1029 if (top == null || (prev != null && top != prev)) { 1030 // If there are no more activities available to run, 1031 // do resume anyway to start something. Also if the top 1032 // activity on the stack is not the just paused activity, 1033 // we need to go ahead and resume it to ensure we complete 1034 // an in-flight app switch. 1035 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 1036 } 1037 } 1038 } 1039 1040 if (prev != null) { 1041 prev.resumeKeyDispatchingLocked(); 1042 1043 if (prev.app != null && prev.cpuTimeAtResume > 0 1044 && mService.mBatteryStatsService.isOnBattery()) { 1045 long diff; 1046 synchronized (mService.mProcessCpuThread) { 1047 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 1048 - prev.cpuTimeAtResume; 1049 } 1050 if (diff > 0) { 1051 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 1052 synchronized (bsi) { 1053 BatteryStatsImpl.Uid.Proc ps = 1054 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 1055 prev.info.packageName); 1056 if (ps != null) { 1057 ps.addForegroundTimeLocked(diff); 1058 } 1059 } 1060 } 1061 } 1062 prev.cpuTimeAtResume = 0; // reset it 1063 } 1064 } 1065 1066 /** 1067 * Once we know that we have asked an application to put an activity in 1068 * the resumed state (either by launching it or explicitly telling it), 1069 * this function updates the rest of our state to match that fact. 1070 */ 1071 private void completeResumeLocked(ActivityRecord next) { 1072 next.idle = false; 1073 next.results = null; 1074 next.newIntents = null; 1075 1076 if (next.isHomeActivity() && next.isNotResolverActivity()) { 1077 ProcessRecord app = next.task.mActivities.get(0).app; 1078 if (app != null && app != mService.mHomeProcess) { 1079 mService.mHomeProcess = app; 1080 } 1081 } 1082 1083 if (next.nowVisible) { 1084 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1085 mStackSupervisor.notifyActivityDrawnForKeyguard(); 1086 } 1087 1088 // schedule an idle timeout in case the app doesn't do it for us. 1089 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1090 1091 mStackSupervisor.reportResumedActivityLocked(next); 1092 1093 next.resumeKeyDispatchingLocked(); 1094 mNoAnimActivities.clear(); 1095 1096 // Mark the point when the activity is resuming 1097 // TODO: To be more accurate, the mark should be before the onCreate, 1098 // not after the onResume. But for subsequent starts, onResume is fine. 1099 if (next.app != null) { 1100 synchronized (mService.mProcessCpuThread) { 1101 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1102 } 1103 } else { 1104 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1105 } 1106 1107 // If we are resuming the activity that we had last screenshotted, then we know it will be 1108 // updated, so invalidate the last screenshot to ensure we take a fresh one when requested 1109 if (next == mLastScreenshotActivity) { 1110 invalidateLastScreenshot(); 1111 } 1112 next.returningOptions = null; 1113 } 1114 1115 private void setVisibile(ActivityRecord r, boolean visible) { 1116 r.visible = visible; 1117 mWindowManager.setAppVisibility(r.appToken, visible); 1118 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1119 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1120 ActivityContainer container = containers.get(containerNdx); 1121 container.setVisible(visible); 1122 } 1123 } 1124 1125 // Find the first visible activity above the passed activity and if it is translucent return it 1126 // otherwise return null; 1127 ActivityRecord findNextTranslucentActivity(ActivityRecord r) { 1128 TaskRecord task = r.task; 1129 if (task == null) { 1130 return null; 1131 } 1132 1133 ActivityStack stack = task.stack; 1134 if (stack == null) { 1135 return null; 1136 } 1137 1138 int stackNdx = mStacks.indexOf(stack); 1139 1140 ArrayList<TaskRecord> tasks = stack.mTaskHistory; 1141 int taskNdx = tasks.indexOf(task); 1142 1143 ArrayList<ActivityRecord> activities = task.mActivities; 1144 int activityNdx = activities.indexOf(r) + 1; 1145 1146 final int numStacks = mStacks.size(); 1147 while (stackNdx < numStacks) { 1148 tasks = mStacks.get(stackNdx).mTaskHistory; 1149 final int numTasks = tasks.size(); 1150 while (taskNdx < numTasks) { 1151 activities = tasks.get(taskNdx).mActivities; 1152 final int numActivities = activities.size(); 1153 while (activityNdx < numActivities) { 1154 final ActivityRecord activity = activities.get(activityNdx); 1155 if (!activity.finishing) { 1156 return activity.fullscreen ? null : activity; 1157 } 1158 ++activityNdx; 1159 } 1160 activityNdx = 0; 1161 ++taskNdx; 1162 } 1163 taskNdx = 0; 1164 ++stackNdx; 1165 } 1166 1167 return null; 1168 } 1169 1170 // Checks if any of the stacks above this one has a fullscreen activity behind it. 1171 // If so, this stack is hidden, otherwise it is visible. 1172 private boolean isStackVisible() { 1173 if (!isAttached()) { 1174 return false; 1175 } 1176 1177 if (mStackSupervisor.isFrontStack(this)) { 1178 return true; 1179 } 1180 1181 /** 1182 * Start at the task above this one and go up, looking for a visible 1183 * fullscreen activity, or a translucent activity that requested the 1184 * wallpaper to be shown behind it. 1185 */ 1186 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) { 1187 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks(); 1188 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) { 1189 final TaskRecord task = tasks.get(taskNdx); 1190 final ArrayList<ActivityRecord> activities = task.mActivities; 1191 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) { 1192 final ActivityRecord r = activities.get(activityNdx); 1193 1194 // Conditions for an activity to obscure the stack we're 1195 // examining: 1196 // 1. Not Finishing AND Visible AND: 1197 // 2. Either: 1198 // - Full Screen Activity OR 1199 // - On top of Home and our stack is NOT home 1200 if (!r.finishing && r.visible && (r.fullscreen || 1201 (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()))) { 1202 return false; 1203 } 1204 } 1205 } 1206 } 1207 1208 return true; 1209 } 1210 1211 /** 1212 * Make sure that all activities that need to be visible (that is, they 1213 * currently can be seen by the user) actually are. 1214 */ 1215 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1216 ActivityRecord top = topRunningActivityLocked(null); 1217 if (top == null) { 1218 return; 1219 } 1220 if (DEBUG_VISBILITY) Slog.v( 1221 TAG, "ensureActivitiesVisible behind " + top 1222 + " configChanges=0x" + Integer.toHexString(configChanges)); 1223 1224 if (mTranslucentActivityWaiting != top) { 1225 mUndrawnActivitiesBelowTopTranslucent.clear(); 1226 if (mTranslucentActivityWaiting != null) { 1227 // Call the callback with a timeout indication. 1228 notifyActivityDrawnLocked(null); 1229 mTranslucentActivityWaiting = null; 1230 } 1231 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1232 } 1233 1234 // If the top activity is not fullscreen, then we need to 1235 // make sure any activities under it are now visible. 1236 boolean aboveTop = true; 1237 boolean behindFullscreen = !isStackVisible(); 1238 1239 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1240 final TaskRecord task = mTaskHistory.get(taskNdx); 1241 final ArrayList<ActivityRecord> activities = task.mActivities; 1242 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1243 final ActivityRecord r = activities.get(activityNdx); 1244 if (r.finishing) { 1245 continue; 1246 } 1247 if (aboveTop && r != top) { 1248 continue; 1249 } 1250 aboveTop = false; 1251 // mLaunchingBehind: Activities launching behind are at the back of the task stack 1252 // but must be drawn initially for the animation as though they were visible. 1253 if (!behindFullscreen || r.mLaunchTaskBehind) { 1254 if (DEBUG_VISBILITY) Slog.v( 1255 TAG, "Make visible? " + r + " finishing=" + r.finishing 1256 + " state=" + r.state); 1257 1258 // First: if this is not the current activity being started, make 1259 // sure it matches the current configuration. 1260 if (r != starting) { 1261 ensureActivityConfigurationLocked(r, 0); 1262 } 1263 1264 if (r.app == null || r.app.thread == null) { 1265 // This activity needs to be visible, but isn't even 1266 // running... get it started, but don't resume it 1267 // at this point. 1268 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1269 if (r != starting) { 1270 r.startFreezingScreenLocked(r.app, configChanges); 1271 } 1272 if (!r.visible || r.mLaunchTaskBehind) { 1273 if (DEBUG_VISBILITY) Slog.v( 1274 TAG, "Starting and making visible: " + r); 1275 setVisibile(r, true); 1276 } 1277 if (r != starting) { 1278 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1279 } 1280 1281 } else if (r.visible) { 1282 // If this activity is already visible, then there is nothing 1283 // else to do here. 1284 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1285 r.stopFreezingScreenLocked(false); 1286 try { 1287 if (r.returningOptions != null) { 1288 r.app.thread.scheduleOnNewActivityOptions(r.appToken, 1289 r.returningOptions); 1290 } 1291 } catch(RemoteException e) { 1292 } 1293 } else { 1294 // This activity is not currently visible, but is running. 1295 // Tell it to become visible. 1296 r.visible = true; 1297 if (r.state != ActivityState.RESUMED && r != starting) { 1298 // If this activity is paused, tell it 1299 // to now show its window. 1300 if (DEBUG_VISBILITY) Slog.v( 1301 TAG, "Making visible and scheduling visibility: " + r); 1302 try { 1303 if (mTranslucentActivityWaiting != null) { 1304 r.updateOptionsLocked(r.returningOptions); 1305 mUndrawnActivitiesBelowTopTranslucent.add(r); 1306 } 1307 setVisibile(r, true); 1308 r.sleeping = false; 1309 r.app.pendingUiClean = true; 1310 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1311 r.stopFreezingScreenLocked(false); 1312 } catch (Exception e) { 1313 // Just skip on any failure; we'll make it 1314 // visible when it next restarts. 1315 Slog.w(TAG, "Exception thrown making visibile: " 1316 + r.intent.getComponent(), e); 1317 } 1318 } 1319 } 1320 1321 // Aggregate current change flags. 1322 configChanges |= r.configChangeFlags; 1323 1324 if (r.fullscreen) { 1325 // At this point, nothing else needs to be shown 1326 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1327 behindFullscreen = true; 1328 } else if (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()) { 1329 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1330 behindFullscreen = true; 1331 } 1332 } else { 1333 if (DEBUG_VISBILITY) Slog.v( 1334 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1335 + " state=" + r.state 1336 + " behindFullscreen=" + behindFullscreen); 1337 // Now for any activities that aren't visible to the user, make 1338 // sure they no longer are keeping the screen frozen. 1339 if (r.visible) { 1340 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1341 try { 1342 setVisibile(r, false); 1343 switch (r.state) { 1344 case STOPPING: 1345 case STOPPED: 1346 if (r.app != null && r.app.thread != null) { 1347 if (DEBUG_VISBILITY) Slog.v( 1348 TAG, "Scheduling invisibility: " + r); 1349 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1350 } 1351 break; 1352 1353 case INITIALIZING: 1354 case RESUMED: 1355 case PAUSING: 1356 case PAUSED: 1357 // This case created for transitioning activities from 1358 // translucent to opaque {@link Activity#convertToOpaque}. 1359 if (getVisibleBehindActivity() == r) { 1360 releaseBackgroundResources(); 1361 } else { 1362 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1363 mStackSupervisor.mStoppingActivities.add(r); 1364 } 1365 mStackSupervisor.scheduleIdleLocked(); 1366 } 1367 break; 1368 1369 default: 1370 break; 1371 } 1372 } catch (Exception e) { 1373 // Just skip on any failure; we'll make it 1374 // visible when it next restarts. 1375 Slog.w(TAG, "Exception thrown making hidden: " 1376 + r.intent.getComponent(), e); 1377 } 1378 } else { 1379 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1380 } 1381 } 1382 } 1383 } 1384 1385 if (mTranslucentActivityWaiting != null && 1386 mUndrawnActivitiesBelowTopTranslucent.isEmpty()) { 1387 // Nothing is getting drawn or everything was already visible, don't wait for timeout. 1388 notifyActivityDrawnLocked(null); 1389 } 1390 } 1391 1392 void convertToTranslucent(ActivityRecord r) { 1393 mTranslucentActivityWaiting = r; 1394 mUndrawnActivitiesBelowTopTranslucent.clear(); 1395 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1396 } 1397 1398 /** 1399 * Called as activities below the top translucent activity are redrawn. When the last one is 1400 * redrawn notify the top activity by calling 1401 * {@link Activity#onTranslucentConversionComplete}. 1402 * 1403 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1404 * occurred and the activity will be notified immediately. 1405 */ 1406 void notifyActivityDrawnLocked(ActivityRecord r) { 1407 mActivityContainer.setDrawn(); 1408 if ((r == null) 1409 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1410 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1411 // The last undrawn activity below the top has just been drawn. If there is an 1412 // opaque activity at the top, notify it that it can become translucent safely now. 1413 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1414 mTranslucentActivityWaiting = null; 1415 mUndrawnActivitiesBelowTopTranslucent.clear(); 1416 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1417 1418 if (waitingActivity != null) { 1419 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1420 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1421 try { 1422 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1423 waitingActivity.appToken, r != null); 1424 } catch (RemoteException e) { 1425 } 1426 } 1427 } 1428 } 1429 } 1430 1431 /** If any activities below the top running one are in the INITIALIZING state and they have a 1432 * starting window displayed then remove that starting window. It is possible that the activity 1433 * in this state will never resumed in which case that starting window will be orphaned. */ 1434 void cancelInitializingActivities() { 1435 final ActivityRecord topActivity = topRunningActivityLocked(null); 1436 boolean aboveTop = true; 1437 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1438 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1439 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1440 final ActivityRecord r = activities.get(activityNdx); 1441 if (aboveTop) { 1442 if (r == topActivity) { 1443 aboveTop = false; 1444 } 1445 continue; 1446 } 1447 1448 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1449 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1450 r.mStartingWindowShown = false; 1451 mWindowManager.removeAppStartingWindow(r.appToken); 1452 } 1453 } 1454 } 1455 } 1456 1457 /** 1458 * Ensure that the top activity in the stack is resumed. 1459 * 1460 * @param prev The previously resumed activity, for when in the process 1461 * of pausing; can be null to call from elsewhere. 1462 * 1463 * @return Returns true if something is being resumed, or false if 1464 * nothing happened. 1465 */ 1466 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1467 return resumeTopActivityLocked(prev, null); 1468 } 1469 1470 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1471 if (inResumeTopActivity) { 1472 // Don't even start recursing. 1473 return false; 1474 } 1475 1476 boolean result = false; 1477 try { 1478 // Protect against recursion. 1479 inResumeTopActivity = true; 1480 result = resumeTopActivityInnerLocked(prev, options); 1481 } finally { 1482 inResumeTopActivity = false; 1483 } 1484 return result; 1485 } 1486 1487 final boolean resumeTopActivityInnerLocked(ActivityRecord prev, Bundle options) { 1488 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1489 1490 ActivityRecord parent = mActivityContainer.mParentActivity; 1491 if ((parent != null && parent.state != ActivityState.RESUMED) || 1492 !mActivityContainer.isAttachedLocked()) { 1493 // Do not resume this stack if its parent is not resumed. 1494 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1495 return false; 1496 } 1497 1498 cancelInitializingActivities(); 1499 1500 // Find the first activity that is not finishing. 1501 ActivityRecord next = topRunningActivityLocked(null); 1502 1503 // Remember how we'll process this pause/resume situation, and ensure 1504 // that the state is reset however we wind up proceeding. 1505 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1506 mStackSupervisor.mUserLeaving = false; 1507 1508 final TaskRecord prevTask = prev != null ? prev.task : null; 1509 if (next == null) { 1510 // There are no more activities! Let's just start up the 1511 // Launcher... 1512 ActivityOptions.abort(options); 1513 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1514 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1515 // Only resume home if on home display 1516 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1517 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1518 return isOnHomeDisplay() && 1519 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1520 } 1521 1522 next.delayedResume = false; 1523 1524 // If the top activity is the resumed one, nothing to do. 1525 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1526 mStackSupervisor.allResumedActivitiesComplete()) { 1527 // Make sure we have executed any pending transitions, since there 1528 // should be nothing left to do at this point. 1529 mWindowManager.executeAppTransition(); 1530 mNoAnimActivities.clear(); 1531 ActivityOptions.abort(options); 1532 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1533 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1534 1535 // Make sure to notify Keyguard as well if it is waiting for an activity to be drawn. 1536 mStackSupervisor.notifyActivityDrawnForKeyguard(); 1537 return false; 1538 } 1539 1540 final TaskRecord nextTask = next.task; 1541 if (prevTask != null && prevTask.stack == this && 1542 prevTask.isOverHomeStack() && prev.finishing && prev.frontOfTask) { 1543 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1544 if (prevTask == nextTask) { 1545 prevTask.setFrontOfTask(); 1546 } else if (prevTask != topTask()) { 1547 // This task is going away but it was supposed to return to the home stack. 1548 // Now the task above it has to return to the home task instead. 1549 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1550 mTaskHistory.get(taskNdx).setTaskToReturnTo(HOME_ACTIVITY_TYPE); 1551 } else { 1552 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1553 "resumeTopActivityLocked: Launching home next"); 1554 // Only resume home if on home display 1555 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1556 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1557 return isOnHomeDisplay() && 1558 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1559 } 1560 } 1561 1562 // If we are sleeping, and there is no resumed activity, and the top 1563 // activity is paused, well that is the state we want. 1564 if (mService.isSleepingOrShuttingDown() 1565 && mLastPausedActivity == next 1566 && mStackSupervisor.allPausedActivitiesComplete()) { 1567 // Make sure we have executed any pending transitions, since there 1568 // should be nothing left to do at this point. 1569 mWindowManager.executeAppTransition(); 1570 mNoAnimActivities.clear(); 1571 ActivityOptions.abort(options); 1572 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1573 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1574 return false; 1575 } 1576 1577 // Make sure that the user who owns this activity is started. If not, 1578 // we will just leave it as is because someone should be bringing 1579 // another user's activities to the top of the stack. 1580 if (mService.mStartedUsers.get(next.userId) == null) { 1581 Slog.w(TAG, "Skipping resume of top activity " + next 1582 + ": user " + next.userId + " is stopped"); 1583 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1584 return false; 1585 } 1586 1587 // The activity may be waiting for stop, but that is no longer 1588 // appropriate for it. 1589 mStackSupervisor.mStoppingActivities.remove(next); 1590 mStackSupervisor.mGoingToSleepActivities.remove(next); 1591 next.sleeping = false; 1592 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1593 1594 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1595 1596 // If we are currently pausing an activity, then don't do anything 1597 // until that is done. 1598 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1599 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1600 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1601 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1602 return false; 1603 } 1604 1605 // Okay we are now going to start a switch, to 'next'. We may first 1606 // have to pause the current activity, but this is an important point 1607 // where we have decided to go to 'next' so keep track of that. 1608 // XXX "App Redirected" dialog is getting too many false positives 1609 // at this point, so turn off for now. 1610 if (false) { 1611 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1612 long now = SystemClock.uptimeMillis(); 1613 final boolean inTime = mLastStartedActivity.startTime != 0 1614 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1615 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1616 final int nextUid = next.info.applicationInfo.uid; 1617 if (inTime && lastUid != nextUid 1618 && lastUid != next.launchedFromUid 1619 && mService.checkPermission( 1620 android.Manifest.permission.STOP_APP_SWITCHES, 1621 -1, next.launchedFromUid) 1622 != PackageManager.PERMISSION_GRANTED) { 1623 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1624 } else { 1625 next.startTime = now; 1626 mLastStartedActivity = next; 1627 } 1628 } else { 1629 next.startTime = SystemClock.uptimeMillis(); 1630 mLastStartedActivity = next; 1631 } 1632 } 1633 1634 // We need to start pausing the current activity so the top one 1635 // can be resumed... 1636 boolean dontWaitForPause = (next.info.flags&ActivityInfo.FLAG_RESUME_WHILE_PAUSING) != 0; 1637 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving, true, dontWaitForPause); 1638 if (mResumedActivity != null) { 1639 pausing |= startPausingLocked(userLeaving, false, true, dontWaitForPause); 1640 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1641 } 1642 if (pausing) { 1643 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1644 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1645 // At this point we want to put the upcoming activity's process 1646 // at the top of the LRU list, since we know we will be needing it 1647 // very soon and it would be a waste to let it get killed if it 1648 // happens to be sitting towards the end. 1649 if (next.app != null && next.app.thread != null) { 1650 mService.updateLruProcessLocked(next.app, true, null); 1651 } 1652 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1653 return true; 1654 } 1655 1656 // If the most recent activity was noHistory but was only stopped rather 1657 // than stopped+finished because the device went to sleep, we need to make 1658 // sure to finish it as we're making a new activity topmost. 1659 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1660 !mLastNoHistoryActivity.finishing) { 1661 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1662 " on new resume"); 1663 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1664 null, "no-history", false); 1665 mLastNoHistoryActivity = null; 1666 } 1667 1668 if (prev != null && prev != next) { 1669 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1670 prev.waitingVisible = true; 1671 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1672 if (DEBUG_SWITCH) Slog.v( 1673 TAG, "Resuming top, waiting visible to hide: " + prev); 1674 } else { 1675 // The next activity is already visible, so hide the previous 1676 // activity's windows right now so we can show the new one ASAP. 1677 // We only do this if the previous is finishing, which should mean 1678 // it is on top of the one being resumed so hiding it quickly 1679 // is good. Otherwise, we want to do the normal route of allowing 1680 // the resumed activity to be shown so we can decide if the 1681 // previous should actually be hidden depending on whether the 1682 // new one is found to be full-screen or not. 1683 if (prev.finishing) { 1684 mWindowManager.setAppVisibility(prev.appToken, false); 1685 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1686 + prev + ", waitingVisible=" 1687 + (prev != null ? prev.waitingVisible : null) 1688 + ", nowVisible=" + next.nowVisible); 1689 } else { 1690 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1691 + prev + ", waitingVisible=" 1692 + (prev != null ? prev.waitingVisible : null) 1693 + ", nowVisible=" + next.nowVisible); 1694 } 1695 } 1696 } 1697 1698 // Launching this app's activity, make sure the app is no longer 1699 // considered stopped. 1700 try { 1701 AppGlobals.getPackageManager().setPackageStoppedState( 1702 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1703 } catch (RemoteException e1) { 1704 } catch (IllegalArgumentException e) { 1705 Slog.w(TAG, "Failed trying to unstop package " 1706 + next.packageName + ": " + e); 1707 } 1708 1709 // We are starting up the next activity, so tell the window manager 1710 // that the previous one will be hidden soon. This way it can know 1711 // to ignore it when computing the desired screen orientation. 1712 boolean anim = true; 1713 if (prev != null) { 1714 if (prev.finishing) { 1715 if (DEBUG_TRANSITION) Slog.v(TAG, 1716 "Prepare close transition: prev=" + prev); 1717 if (mNoAnimActivities.contains(prev)) { 1718 anim = false; 1719 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1720 } else { 1721 mWindowManager.prepareAppTransition(prev.task == next.task 1722 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1723 : AppTransition.TRANSIT_TASK_CLOSE, false); 1724 } 1725 mWindowManager.setAppWillBeHidden(prev.appToken); 1726 mWindowManager.setAppVisibility(prev.appToken, false); 1727 } else { 1728 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1729 if (mNoAnimActivities.contains(next)) { 1730 anim = false; 1731 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1732 } else { 1733 mWindowManager.prepareAppTransition(prev.task == next.task 1734 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1735 : next.mLaunchTaskBehind 1736 ? AppTransition.TRANSIT_TASK_OPEN_BEHIND 1737 : AppTransition.TRANSIT_TASK_OPEN, false); 1738 } 1739 } 1740 if (false) { 1741 mWindowManager.setAppWillBeHidden(prev.appToken); 1742 mWindowManager.setAppVisibility(prev.appToken, false); 1743 } 1744 } else { 1745 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1746 if (mNoAnimActivities.contains(next)) { 1747 anim = false; 1748 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1749 } else { 1750 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1751 } 1752 } 1753 1754 Bundle resumeAnimOptions = null; 1755 if (anim) { 1756 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1757 if (opts != null) { 1758 resumeAnimOptions = opts.toBundle(); 1759 } 1760 next.applyOptionsLocked(); 1761 } else { 1762 next.clearOptionsLocked(); 1763 } 1764 1765 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1766 if (next.app != null && next.app.thread != null) { 1767 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1768 1769 // This activity is now becoming visible. 1770 mWindowManager.setAppVisibility(next.appToken, true); 1771 1772 // schedule launch ticks to collect information about slow apps. 1773 next.startLaunchTickingLocked(); 1774 1775 ActivityRecord lastResumedActivity = 1776 lastStack == null ? null :lastStack.mResumedActivity; 1777 ActivityState lastState = next.state; 1778 1779 mService.updateCpuStats(); 1780 1781 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1782 next.state = ActivityState.RESUMED; 1783 mResumedActivity = next; 1784 next.task.touchActiveTime(); 1785 mService.addRecentTaskLocked(next.task); 1786 mService.updateLruProcessLocked(next.app, true, null); 1787 updateLRUListLocked(next); 1788 mService.updateOomAdjLocked(); 1789 1790 // Have the window manager re-evaluate the orientation of 1791 // the screen based on the new activity order. 1792 boolean notUpdated = true; 1793 if (mStackSupervisor.isFrontStack(this)) { 1794 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1795 mService.mConfiguration, 1796 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1797 if (config != null) { 1798 next.frozenBeforeDestroy = true; 1799 } 1800 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1801 } 1802 1803 if (notUpdated) { 1804 // The configuration update wasn't able to keep the existing 1805 // instance of the activity, and instead started a new one. 1806 // We should be all done, but let's just make sure our activity 1807 // is still at the top and schedule another run if something 1808 // weird happened. 1809 ActivityRecord nextNext = topRunningActivityLocked(null); 1810 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1811 "Activity config changed during resume: " + next 1812 + ", new next: " + nextNext); 1813 if (nextNext != next) { 1814 // Do over! 1815 mStackSupervisor.scheduleResumeTopActivities(); 1816 } 1817 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1818 mNoAnimActivities.clear(); 1819 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1820 return true; 1821 } 1822 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1823 return false; 1824 } 1825 1826 try { 1827 // Deliver all pending results. 1828 ArrayList<ResultInfo> a = next.results; 1829 if (a != null) { 1830 final int N = a.size(); 1831 if (!next.finishing && N > 0) { 1832 if (DEBUG_RESULTS) Slog.v( 1833 TAG, "Delivering results to " + next 1834 + ": " + a); 1835 next.app.thread.scheduleSendResult(next.appToken, a); 1836 } 1837 } 1838 1839 if (next.newIntents != null) { 1840 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1841 } 1842 1843 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1844 next.userId, System.identityHashCode(next), 1845 next.task.taskId, next.shortComponentName); 1846 1847 next.sleeping = false; 1848 mService.showAskCompatModeDialogLocked(next); 1849 next.app.pendingUiClean = true; 1850 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1851 next.clearOptionsLocked(); 1852 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1853 mService.isNextTransitionForward(), resumeAnimOptions); 1854 1855 mStackSupervisor.checkReadyForSleepLocked(); 1856 1857 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1858 } catch (Exception e) { 1859 // Whoops, need to restart this activity! 1860 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1861 + lastState + ": " + next); 1862 next.state = lastState; 1863 if (lastStack != null) { 1864 lastStack.mResumedActivity = lastResumedActivity; 1865 } 1866 Slog.i(TAG, "Restarting because process died: " + next); 1867 if (!next.hasBeenLaunched) { 1868 next.hasBeenLaunched = true; 1869 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1870 mStackSupervisor.isFrontStack(lastStack)) { 1871 mWindowManager.setAppStartingWindow( 1872 next.appToken, next.packageName, next.theme, 1873 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1874 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1875 next.windowFlags, null, true); 1876 } 1877 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1878 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1879 return true; 1880 } 1881 1882 // From this point on, if something goes wrong there is no way 1883 // to recover the activity. 1884 try { 1885 next.visible = true; 1886 completeResumeLocked(next); 1887 } catch (Exception e) { 1888 // If any exception gets thrown, toss away this 1889 // activity and try the next one. 1890 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1891 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1892 "resume-exception", true); 1893 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1894 return true; 1895 } 1896 next.stopped = false; 1897 1898 } else { 1899 // Whoops, need to restart this activity! 1900 if (!next.hasBeenLaunched) { 1901 next.hasBeenLaunched = true; 1902 } else { 1903 if (SHOW_APP_STARTING_PREVIEW) { 1904 mWindowManager.setAppStartingWindow( 1905 next.appToken, next.packageName, next.theme, 1906 mService.compatibilityInfoForPackageLocked( 1907 next.info.applicationInfo), 1908 next.nonLocalizedLabel, 1909 next.labelRes, next.icon, next.logo, next.windowFlags, 1910 null, true); 1911 } 1912 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1913 } 1914 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1915 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1916 } 1917 1918 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1919 return true; 1920 } 1921 1922 private void insertTaskAtTop(TaskRecord task) { 1923 // If this is being moved to the top by another activity or being launched from the home 1924 // activity, set mOnTopOfHome accordingly. 1925 if (isOnHomeDisplay()) { 1926 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1927 final boolean fromHome = lastStack.isHomeStack(); 1928 if (!isHomeStack() && (fromHome || topTask() != task)) { 1929 task.setTaskToReturnTo(fromHome 1930 ? lastStack.topTask() == null 1931 ? HOME_ACTIVITY_TYPE 1932 : lastStack.topTask().taskType 1933 : APPLICATION_ACTIVITY_TYPE); 1934 } 1935 } else { 1936 task.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 1937 } 1938 1939 mTaskHistory.remove(task); 1940 // Now put task at top. 1941 int taskNdx = mTaskHistory.size(); 1942 if (!isCurrentProfileLocked(task.userId)) { 1943 // Put non-current user tasks below current user tasks. 1944 while (--taskNdx >= 0) { 1945 if (!isCurrentProfileLocked(mTaskHistory.get(taskNdx).userId)) { 1946 break; 1947 } 1948 } 1949 ++taskNdx; 1950 } 1951 mTaskHistory.add(taskNdx, task); 1952 updateTaskMovement(task, true); 1953 } 1954 1955 final void startActivityLocked(ActivityRecord r, boolean newTask, 1956 boolean doResume, boolean keepCurTransition, Bundle options) { 1957 TaskRecord rTask = r.task; 1958 final int taskId = rTask.taskId; 1959 // mLaunchTaskBehind tasks get placed at the back of the task stack. 1960 if (!r.mLaunchTaskBehind && (taskForIdLocked(taskId) == null || newTask)) { 1961 // Last activity in task had been removed or ActivityManagerService is reusing task. 1962 // Insert or replace. 1963 // Might not even be in. 1964 insertTaskAtTop(rTask); 1965 mWindowManager.moveTaskToTop(taskId); 1966 } 1967 TaskRecord task = null; 1968 if (!newTask) { 1969 // If starting in an existing task, find where that is... 1970 boolean startIt = true; 1971 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1972 task = mTaskHistory.get(taskNdx); 1973 if (task.getTopActivity() == null) { 1974 // All activities in task are finishing. 1975 continue; 1976 } 1977 if (task == r.task) { 1978 // Here it is! Now, if this is not yet visible to the 1979 // user, then just add it without starting; it will 1980 // get started when the user navigates back to it. 1981 if (!startIt) { 1982 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1983 + task, new RuntimeException("here").fillInStackTrace()); 1984 task.addActivityToTop(r); 1985 r.putInHistory(); 1986 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1987 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1988 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1989 r.userId, r.info.configChanges, task.voiceSession != null, 1990 r.mLaunchTaskBehind); 1991 if (VALIDATE_TOKENS) { 1992 validateAppTokensLocked(); 1993 } 1994 ActivityOptions.abort(options); 1995 return; 1996 } 1997 break; 1998 } else if (task.numFullscreen > 0) { 1999 startIt = false; 2000 } 2001 } 2002 } 2003 2004 // Place a new activity at top of stack, so it is next to interact 2005 // with the user. 2006 2007 // If we are not placing the new activity frontmost, we do not want 2008 // to deliver the onUserLeaving callback to the actual frontmost 2009 // activity 2010 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 2011 mStackSupervisor.mUserLeaving = false; 2012 if (DEBUG_USER_LEAVING) Slog.v(TAG, 2013 "startActivity() behind front, mUserLeaving=false"); 2014 } 2015 2016 task = r.task; 2017 2018 // Slot the activity into the history stack and proceed 2019 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 2020 new RuntimeException("here").fillInStackTrace()); 2021 task.addActivityToTop(r); 2022 task.setFrontOfTask(); 2023 2024 r.putInHistory(); 2025 if (!isHomeStack() || numActivities() > 0) { 2026 // We want to show the starting preview window if we are 2027 // switching to a new task, or the next activity's process is 2028 // not currently running. 2029 boolean showStartingIcon = newTask; 2030 ProcessRecord proc = r.app; 2031 if (proc == null) { 2032 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 2033 } 2034 if (proc == null || proc.thread == null) { 2035 showStartingIcon = true; 2036 } 2037 if (DEBUG_TRANSITION) Slog.v(TAG, 2038 "Prepare open transition: starting " + r); 2039 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 2040 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 2041 mNoAnimActivities.add(r); 2042 } else { 2043 mWindowManager.prepareAppTransition(newTask 2044 ? r.mLaunchTaskBehind 2045 ? AppTransition.TRANSIT_TASK_OPEN_BEHIND 2046 : AppTransition.TRANSIT_TASK_OPEN 2047 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 2048 mNoAnimActivities.remove(r); 2049 } 2050 mWindowManager.addAppToken(task.mActivities.indexOf(r), 2051 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 2052 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 2053 r.info.configChanges, task.voiceSession != null, r.mLaunchTaskBehind); 2054 boolean doShow = true; 2055 if (newTask) { 2056 // Even though this activity is starting fresh, we still need 2057 // to reset it to make sure we apply affinities to move any 2058 // existing activities from other tasks in to it. 2059 // If the caller has requested that the target task be 2060 // reset, then do so. 2061 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 2062 resetTaskIfNeededLocked(r, r); 2063 doShow = topRunningNonDelayedActivityLocked(null) == r; 2064 } 2065 } else if (options != null && new ActivityOptions(options).getAnimationType() 2066 == ActivityOptions.ANIM_SCENE_TRANSITION) { 2067 doShow = false; 2068 } 2069 if (r.mLaunchTaskBehind) { 2070 // Don't do a starting window for mLaunchTaskBehind. More importantly make sure we 2071 // tell WindowManager that r is visible even though it is at the back of the stack. 2072 mWindowManager.setAppVisibility(r.appToken, true); 2073 ensureActivitiesVisibleLocked(null, 0); 2074 } else if (SHOW_APP_STARTING_PREVIEW && doShow) { 2075 // Figure out if we are transitioning from another activity that is 2076 // "has the same starting icon" as the next one. This allows the 2077 // window manager to keep the previous window it had previously 2078 // created, if it still had one. 2079 ActivityRecord prev = mResumedActivity; 2080 if (prev != null) { 2081 // We don't want to reuse the previous starting preview if: 2082 // (1) The current activity is in a different task. 2083 if (prev.task != r.task) { 2084 prev = null; 2085 } 2086 // (2) The current activity is already displayed. 2087 else if (prev.nowVisible) { 2088 prev = null; 2089 } 2090 } 2091 mWindowManager.setAppStartingWindow( 2092 r.appToken, r.packageName, r.theme, 2093 mService.compatibilityInfoForPackageLocked( 2094 r.info.applicationInfo), r.nonLocalizedLabel, 2095 r.labelRes, r.icon, r.logo, r.windowFlags, 2096 prev != null ? prev.appToken : null, showStartingIcon); 2097 r.mStartingWindowShown = true; 2098 } 2099 } else { 2100 // If this is the first activity, don't do any fancy animations, 2101 // because there is nothing for it to animate on top of. 2102 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 2103 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 2104 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 2105 r.info.configChanges, task.voiceSession != null, r.mLaunchTaskBehind); 2106 ActivityOptions.abort(options); 2107 options = null; 2108 } 2109 if (VALIDATE_TOKENS) { 2110 validateAppTokensLocked(); 2111 } 2112 2113 if (doResume) { 2114 mStackSupervisor.resumeTopActivitiesLocked(this, r, options); 2115 } 2116 } 2117 2118 final void validateAppTokensLocked() { 2119 mValidateAppTokens.clear(); 2120 mValidateAppTokens.ensureCapacity(numActivities()); 2121 final int numTasks = mTaskHistory.size(); 2122 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 2123 TaskRecord task = mTaskHistory.get(taskNdx); 2124 final ArrayList<ActivityRecord> activities = task.mActivities; 2125 if (activities.isEmpty()) { 2126 continue; 2127 } 2128 TaskGroup group = new TaskGroup(); 2129 group.taskId = task.taskId; 2130 mValidateAppTokens.add(group); 2131 final int numActivities = activities.size(); 2132 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 2133 final ActivityRecord r = activities.get(activityNdx); 2134 group.tokens.add(r.appToken); 2135 } 2136 } 2137 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 2138 } 2139 2140 /** 2141 * Perform a reset of the given task, if needed as part of launching it. 2142 * Returns the new HistoryRecord at the top of the task. 2143 */ 2144 /** 2145 * Helper method for #resetTaskIfNeededLocked. 2146 * We are inside of the task being reset... we'll either finish this activity, push it out 2147 * for another task, or leave it as-is. 2148 * @param task The task containing the Activity (taskTop) that might be reset. 2149 * @param forceReset 2150 * @return An ActivityOptions that needs to be processed. 2151 */ 2152 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 2153 ActivityOptions topOptions = null; 2154 2155 int replyChainEnd = -1; 2156 boolean canMoveOptions = true; 2157 2158 // We only do this for activities that are not the root of the task (since if we finish 2159 // the root, we may no longer have the task!). 2160 final ArrayList<ActivityRecord> activities = task.mActivities; 2161 final int numActivities = activities.size(); 2162 final int rootActivityNdx = task.findEffectiveRootIndex(); 2163 for (int i = numActivities - 1; i > rootActivityNdx; --i ) { 2164 ActivityRecord target = activities.get(i); 2165 if (target.frontOfTask) 2166 break; 2167 2168 final int flags = target.info.flags; 2169 final boolean finishOnTaskLaunch = 2170 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2171 final boolean allowTaskReparenting = 2172 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2173 final boolean clearWhenTaskReset = 2174 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2175 2176 if (!finishOnTaskLaunch 2177 && !clearWhenTaskReset 2178 && target.resultTo != null) { 2179 // If this activity is sending a reply to a previous 2180 // activity, we can't do anything with it now until 2181 // we reach the start of the reply chain. 2182 // XXX note that we are assuming the result is always 2183 // to the previous activity, which is almost always 2184 // the case but we really shouldn't count on. 2185 if (replyChainEnd < 0) { 2186 replyChainEnd = i; 2187 } 2188 } else if (!finishOnTaskLaunch 2189 && !clearWhenTaskReset 2190 && allowTaskReparenting 2191 && target.taskAffinity != null 2192 && !target.taskAffinity.equals(task.affinity)) { 2193 // If this activity has an affinity for another 2194 // task, then we need to move it out of here. We will 2195 // move it as far out of the way as possible, to the 2196 // bottom of the activity stack. This also keeps it 2197 // correctly ordered with any activities we previously 2198 // moved. 2199 final TaskRecord targetTask; 2200 final ActivityRecord bottom = 2201 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2202 mTaskHistory.get(0).mActivities.get(0) : null; 2203 if (bottom != null && target.taskAffinity != null 2204 && target.taskAffinity.equals(bottom.task.affinity)) { 2205 // If the activity currently at the bottom has the 2206 // same task affinity as the one we are moving, 2207 // then merge it into the same task. 2208 targetTask = bottom.task; 2209 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2210 + " out to bottom task " + bottom.task); 2211 } else { 2212 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2213 null, null, null, false); 2214 targetTask.affinityIntent = target.intent; 2215 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2216 + " out to new task " + target.task); 2217 } 2218 2219 final int targetTaskId = targetTask.taskId; 2220 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2221 2222 boolean noOptions = canMoveOptions; 2223 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2224 for (int srcPos = start; srcPos >= i; --srcPos) { 2225 final ActivityRecord p = activities.get(srcPos); 2226 if (p.finishing) { 2227 continue; 2228 } 2229 2230 canMoveOptions = false; 2231 if (noOptions && topOptions == null) { 2232 topOptions = p.takeOptionsLocked(); 2233 if (topOptions != null) { 2234 noOptions = false; 2235 } 2236 } 2237 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2238 + task + " adding to task=" + targetTask 2239 + " Callers=" + Debug.getCallers(4)); 2240 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2241 + " out to target's task " + target.task); 2242 p.setTask(targetTask, null); 2243 targetTask.addActivityAtBottom(p); 2244 2245 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2246 } 2247 2248 mWindowManager.moveTaskToBottom(targetTaskId); 2249 if (VALIDATE_TOKENS) { 2250 validateAppTokensLocked(); 2251 } 2252 2253 replyChainEnd = -1; 2254 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2255 // If the activity should just be removed -- either 2256 // because it asks for it, or the task should be 2257 // cleared -- then finish it and anything that is 2258 // part of its reply chain. 2259 int end; 2260 if (clearWhenTaskReset) { 2261 // In this case, we want to finish this activity 2262 // and everything above it, so be sneaky and pretend 2263 // like these are all in the reply chain. 2264 end = numActivities - 1; 2265 } else if (replyChainEnd < 0) { 2266 end = i; 2267 } else { 2268 end = replyChainEnd; 2269 } 2270 boolean noOptions = canMoveOptions; 2271 for (int srcPos = i; srcPos <= end; srcPos++) { 2272 ActivityRecord p = activities.get(srcPos); 2273 if (p.finishing) { 2274 continue; 2275 } 2276 canMoveOptions = false; 2277 if (noOptions && topOptions == null) { 2278 topOptions = p.takeOptionsLocked(); 2279 if (topOptions != null) { 2280 noOptions = false; 2281 } 2282 } 2283 if (DEBUG_TASKS) Slog.w(TAG, 2284 "resetTaskIntendedTask: calling finishActivity on " + p); 2285 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2286 end--; 2287 srcPos--; 2288 } 2289 } 2290 replyChainEnd = -1; 2291 } else { 2292 // If we were in the middle of a chain, well the 2293 // activity that started it all doesn't want anything 2294 // special, so leave it all as-is. 2295 replyChainEnd = -1; 2296 } 2297 } 2298 2299 return topOptions; 2300 } 2301 2302 /** 2303 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2304 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2305 * @param affinityTask The task we are looking for an affinity to. 2306 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2307 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2308 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2309 */ 2310 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2311 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2312 int replyChainEnd = -1; 2313 final int taskId = task.taskId; 2314 final String taskAffinity = task.affinity; 2315 2316 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2317 final int numActivities = activities.size(); 2318 final int rootActivityNdx = affinityTask.findEffectiveRootIndex(); 2319 2320 // Do not operate on or below the effective root Activity. 2321 for (int i = numActivities - 1; i > rootActivityNdx; --i) { 2322 ActivityRecord target = activities.get(i); 2323 if (target.frontOfTask) 2324 break; 2325 2326 final int flags = target.info.flags; 2327 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2328 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2329 2330 if (target.resultTo != null) { 2331 // If this activity is sending a reply to a previous 2332 // activity, we can't do anything with it now until 2333 // we reach the start of the reply chain. 2334 // XXX note that we are assuming the result is always 2335 // to the previous activity, which is almost always 2336 // the case but we really shouldn't count on. 2337 if (replyChainEnd < 0) { 2338 replyChainEnd = i; 2339 } 2340 } else if (topTaskIsHigher 2341 && allowTaskReparenting 2342 && taskAffinity != null 2343 && taskAffinity.equals(target.taskAffinity)) { 2344 // This activity has an affinity for our task. Either remove it if we are 2345 // clearing or move it over to our task. Note that 2346 // we currently punt on the case where we are resetting a 2347 // task that is not at the top but who has activities above 2348 // with an affinity to it... this is really not a normal 2349 // case, and we will need to later pull that task to the front 2350 // and usually at that point we will do the reset and pick 2351 // up those remaining activities. (This only happens if 2352 // someone starts an activity in a new task from an activity 2353 // in a task that is not currently on top.) 2354 if (forceReset || finishOnTaskLaunch) { 2355 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2356 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2357 for (int srcPos = start; srcPos >= i; --srcPos) { 2358 final ActivityRecord p = activities.get(srcPos); 2359 if (p.finishing) { 2360 continue; 2361 } 2362 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2363 } 2364 } else { 2365 if (taskInsertionPoint < 0) { 2366 taskInsertionPoint = task.mActivities.size(); 2367 2368 } 2369 2370 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2371 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2372 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2373 for (int srcPos = start; srcPos >= i; --srcPos) { 2374 final ActivityRecord p = activities.get(srcPos); 2375 p.setTask(task, null); 2376 task.addActivityAtIndex(taskInsertionPoint, p); 2377 2378 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2379 + " to stack at " + task, 2380 new RuntimeException("here").fillInStackTrace()); 2381 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2382 + " in to resetting task " + task); 2383 mWindowManager.setAppGroupId(p.appToken, taskId); 2384 } 2385 mWindowManager.moveTaskToTop(taskId); 2386 if (VALIDATE_TOKENS) { 2387 validateAppTokensLocked(); 2388 } 2389 2390 // Now we've moved it in to place... but what if this is 2391 // a singleTop activity and we have put it on top of another 2392 // instance of the same activity? Then we drop the instance 2393 // below so it remains singleTop. 2394 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2395 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2396 int targetNdx = taskActivities.indexOf(target); 2397 if (targetNdx > 0) { 2398 ActivityRecord p = taskActivities.get(targetNdx - 1); 2399 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2400 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2401 false); 2402 } 2403 } 2404 } 2405 } 2406 2407 replyChainEnd = -1; 2408 } 2409 } 2410 return taskInsertionPoint; 2411 } 2412 2413 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2414 ActivityRecord newActivity) { 2415 boolean forceReset = 2416 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2417 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2418 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2419 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2420 forceReset = true; 2421 } 2422 } 2423 2424 final TaskRecord task = taskTop.task; 2425 2426 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2427 * for remaining tasks. Used for later tasks to reparent to task. */ 2428 boolean taskFound = false; 2429 2430 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2431 ActivityOptions topOptions = null; 2432 2433 // Preserve the location for reparenting in the new task. 2434 int reparentInsertionPoint = -1; 2435 2436 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2437 final TaskRecord targetTask = mTaskHistory.get(i); 2438 2439 if (targetTask == task) { 2440 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2441 taskFound = true; 2442 } else { 2443 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2444 taskFound, forceReset, reparentInsertionPoint); 2445 } 2446 } 2447 2448 int taskNdx = mTaskHistory.indexOf(task); 2449 do { 2450 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2451 } while (taskTop == null && taskNdx >= 0); 2452 2453 if (topOptions != null) { 2454 // If we got some ActivityOptions from an activity on top that 2455 // was removed from the task, propagate them to the new real top. 2456 if (taskTop != null) { 2457 taskTop.updateOptionsLocked(topOptions); 2458 } else { 2459 topOptions.abort(); 2460 } 2461 } 2462 2463 return taskTop; 2464 } 2465 2466 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2467 String resultWho, int requestCode, int resultCode, Intent data) { 2468 2469 if (callingUid > 0) { 2470 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2471 data, r.getUriPermissionsLocked(), r.userId); 2472 } 2473 2474 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2475 + " : who=" + resultWho + " req=" + requestCode 2476 + " res=" + resultCode + " data=" + data); 2477 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2478 try { 2479 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2480 list.add(new ResultInfo(resultWho, requestCode, 2481 resultCode, data)); 2482 r.app.thread.scheduleSendResult(r.appToken, list); 2483 return; 2484 } catch (Exception e) { 2485 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2486 } 2487 } 2488 2489 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2490 } 2491 2492 private void adjustFocusedActivityLocked(ActivityRecord r) { 2493 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2494 ActivityRecord next = topRunningActivityLocked(null); 2495 if (next != r) { 2496 final TaskRecord task = r.task; 2497 if (r.frontOfTask && task == topTask() && task.isOverHomeStack()) { 2498 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 2499 } 2500 } 2501 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2502 if (top != null) { 2503 mService.setFocusedActivityLocked(top); 2504 } 2505 } 2506 } 2507 2508 final void stopActivityLocked(ActivityRecord r) { 2509 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2510 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2511 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2512 if (!r.finishing) { 2513 if (!mService.isSleeping()) { 2514 if (DEBUG_STATES) { 2515 Slog.d(TAG, "no-history finish of " + r); 2516 } 2517 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2518 "no-history", false); 2519 } else { 2520 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2521 + " on stop because we're just sleeping"); 2522 } 2523 } 2524 } 2525 2526 if (r.app != null && r.app.thread != null) { 2527 adjustFocusedActivityLocked(r); 2528 r.resumeKeyDispatchingLocked(); 2529 try { 2530 r.stopped = false; 2531 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2532 + " (stop requested)"); 2533 r.state = ActivityState.STOPPING; 2534 if (DEBUG_VISBILITY) Slog.v( 2535 TAG, "Stopping visible=" + r.visible + " for " + r); 2536 if (!r.visible) { 2537 mWindowManager.setAppVisibility(r.appToken, false); 2538 } 2539 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2540 if (mService.isSleepingOrShuttingDown()) { 2541 r.setSleeping(true); 2542 } 2543 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2544 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2545 } catch (Exception e) { 2546 // Maybe just ignore exceptions here... if the process 2547 // has crashed, our death notification will clean things 2548 // up. 2549 Slog.w(TAG, "Exception thrown during pause", e); 2550 // Just in case, assume it to be stopped. 2551 r.stopped = true; 2552 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2553 r.state = ActivityState.STOPPED; 2554 if (r.configDestroy) { 2555 destroyActivityLocked(r, true, "stop-except"); 2556 } 2557 } 2558 } 2559 } 2560 2561 /** 2562 * @return Returns true if the activity is being finished, false if for 2563 * some reason it is being left as-is. 2564 */ 2565 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2566 Intent resultData, String reason, boolean oomAdj) { 2567 ActivityRecord r = isInStackLocked(token); 2568 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2569 TAG, "Finishing activity token=" + token + " r=" 2570 + ", result=" + resultCode + ", data=" + resultData 2571 + ", reason=" + reason); 2572 if (r == null) { 2573 return false; 2574 } 2575 2576 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2577 return true; 2578 } 2579 2580 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2581 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2582 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2583 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2584 ActivityRecord r = activities.get(activityNdx); 2585 if (r.resultTo == self && r.requestCode == requestCode) { 2586 if ((r.resultWho == null && resultWho == null) || 2587 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2588 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2589 false); 2590 } 2591 } 2592 } 2593 } 2594 mService.updateOomAdjLocked(); 2595 } 2596 2597 final void finishTopRunningActivityLocked(ProcessRecord app) { 2598 ActivityRecord r = topRunningActivityLocked(null); 2599 if (r != null && r.app == app) { 2600 // If the top running activity is from this crashing 2601 // process, then terminate it to avoid getting in a loop. 2602 Slog.w(TAG, " Force finishing activity " 2603 + r.intent.getComponent().flattenToShortString()); 2604 int taskNdx = mTaskHistory.indexOf(r.task); 2605 int activityNdx = r.task.mActivities.indexOf(r); 2606 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2607 // Also terminate any activities below it that aren't yet 2608 // stopped, to avoid a situation where one will get 2609 // re-start our crashing activity once it gets resumed again. 2610 --activityNdx; 2611 if (activityNdx < 0) { 2612 do { 2613 --taskNdx; 2614 if (taskNdx < 0) { 2615 break; 2616 } 2617 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2618 } while (activityNdx < 0); 2619 } 2620 if (activityNdx >= 0) { 2621 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2622 if (r.state == ActivityState.RESUMED 2623 || r.state == ActivityState.PAUSING 2624 || r.state == ActivityState.PAUSED) { 2625 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2626 Slog.w(TAG, " Force finishing activity " 2627 + r.intent.getComponent().flattenToShortString()); 2628 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2629 } 2630 } 2631 } 2632 } 2633 } 2634 2635 final void finishVoiceTask(IVoiceInteractionSession session) { 2636 IBinder sessionBinder = session.asBinder(); 2637 boolean didOne = false; 2638 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2639 TaskRecord tr = mTaskHistory.get(taskNdx); 2640 if (tr.voiceSession != null && tr.voiceSession.asBinder() == sessionBinder) { 2641 for (int activityNdx = tr.mActivities.size() - 1; activityNdx >= 0; --activityNdx) { 2642 ActivityRecord r = tr.mActivities.get(activityNdx); 2643 if (!r.finishing) { 2644 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "finish-voice", 2645 false); 2646 didOne = true; 2647 } 2648 } 2649 } 2650 } 2651 if (didOne) { 2652 mService.updateOomAdjLocked(); 2653 } 2654 } 2655 2656 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2657 ArrayList<ActivityRecord> activities = r.task.mActivities; 2658 for (int index = activities.indexOf(r); index >= 0; --index) { 2659 ActivityRecord cur = activities.get(index); 2660 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2661 break; 2662 } 2663 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2664 } 2665 return true; 2666 } 2667 2668 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2669 // send the result 2670 ActivityRecord resultTo = r.resultTo; 2671 if (resultTo != null) { 2672 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2673 + " who=" + r.resultWho + " req=" + r.requestCode 2674 + " res=" + resultCode + " data=" + resultData); 2675 if (resultTo.userId != r.userId) { 2676 if (resultData != null) { 2677 resultData.setContentUserHint(r.userId); 2678 } 2679 } 2680 if (r.info.applicationInfo.uid > 0) { 2681 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2682 resultTo.packageName, resultData, 2683 resultTo.getUriPermissionsLocked(), resultTo.userId); 2684 } 2685 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2686 resultData); 2687 r.resultTo = null; 2688 } 2689 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2690 2691 // Make sure this HistoryRecord is not holding on to other resources, 2692 // because clients have remote IPC references to this object so we 2693 // can't assume that will go away and want to avoid circular IPC refs. 2694 r.results = null; 2695 r.pendingResults = null; 2696 r.newIntents = null; 2697 r.icicle = null; 2698 } 2699 2700 /** 2701 * @return Returns true if this activity has been removed from the history 2702 * list, or false if it is still in the list and will be removed later. 2703 */ 2704 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2705 String reason, boolean oomAdj) { 2706 if (r.finishing) { 2707 Slog.w(TAG, "Duplicate finish request for " + r); 2708 return false; 2709 } 2710 2711 r.makeFinishing(); 2712 final TaskRecord task = r.task; 2713 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2714 r.userId, System.identityHashCode(r), 2715 task.taskId, r.shortComponentName, reason); 2716 final ArrayList<ActivityRecord> activities = task.mActivities; 2717 final int index = activities.indexOf(r); 2718 if (index < (activities.size() - 1)) { 2719 task.setFrontOfTask(); 2720 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2721 // If the caller asked that this activity (and all above it) 2722 // be cleared when the task is reset, don't lose that information, 2723 // but propagate it up to the next activity. 2724 ActivityRecord next = activities.get(index+1); 2725 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2726 } 2727 } 2728 2729 r.pauseKeyDispatchingLocked(); 2730 2731 adjustFocusedActivityLocked(r); 2732 2733 finishActivityResultsLocked(r, resultCode, resultData); 2734 2735 if (mResumedActivity == r) { 2736 boolean endTask = index <= 0; 2737 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2738 "Prepare close transition: finishing " + r); 2739 mWindowManager.prepareAppTransition(endTask 2740 ? AppTransition.TRANSIT_TASK_CLOSE 2741 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2742 2743 // Tell window manager to prepare for this one to be removed. 2744 mWindowManager.setAppVisibility(r.appToken, false); 2745 2746 if (mPausingActivity == null) { 2747 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2748 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2749 startPausingLocked(false, false, false, false); 2750 } 2751 2752 if (endTask) { 2753 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2754 } 2755 } else if (r.state != ActivityState.PAUSING) { 2756 // If the activity is PAUSING, we will complete the finish once 2757 // it is done pausing; else we can just directly finish it here. 2758 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2759 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2760 } else { 2761 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2762 } 2763 2764 return false; 2765 } 2766 2767 static final int FINISH_IMMEDIATELY = 0; 2768 static final int FINISH_AFTER_PAUSE = 1; 2769 static final int FINISH_AFTER_VISIBLE = 2; 2770 2771 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2772 // First things first: if this activity is currently visible, 2773 // and the resumed activity is not yet visible, then hold off on 2774 // finishing until the resumed one becomes visible. 2775 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2776 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2777 mStackSupervisor.mStoppingActivities.add(r); 2778 if (mStackSupervisor.mStoppingActivities.size() > 3 2779 || r.frontOfTask && mTaskHistory.size() <= 1) { 2780 // If we already have a few activities waiting to stop, 2781 // then give up on things going idle and start clearing 2782 // them out. Or if r is the last of activity of the last task the stack 2783 // will be empty and must be cleared immediately. 2784 mStackSupervisor.scheduleIdleLocked(); 2785 } else { 2786 mStackSupervisor.checkReadyForSleepLocked(); 2787 } 2788 } 2789 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2790 + " (finish requested)"); 2791 r.state = ActivityState.STOPPING; 2792 if (oomAdj) { 2793 mService.updateOomAdjLocked(); 2794 } 2795 return r; 2796 } 2797 2798 // make sure the record is cleaned out of other places. 2799 mStackSupervisor.mStoppingActivities.remove(r); 2800 mStackSupervisor.mGoingToSleepActivities.remove(r); 2801 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2802 if (mResumedActivity == r) { 2803 mResumedActivity = null; 2804 } 2805 final ActivityState prevState = r.state; 2806 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2807 r.state = ActivityState.FINISHING; 2808 2809 if (mode == FINISH_IMMEDIATELY 2810 || prevState == ActivityState.STOPPED 2811 || prevState == ActivityState.INITIALIZING) { 2812 // If this activity is already stopped, we can just finish 2813 // it right now. 2814 r.makeFinishing(); 2815 boolean activityRemoved = destroyActivityLocked(r, true, "finish-imm"); 2816 if (activityRemoved) { 2817 mStackSupervisor.resumeTopActivitiesLocked(); 2818 } 2819 if (DEBUG_CONTAINERS) Slog.d(TAG, 2820 "destroyActivityLocked: finishCurrentActivityLocked r=" + r + 2821 " destroy returned removed=" + activityRemoved); 2822 return activityRemoved ? null : r; 2823 } 2824 2825 // Need to go through the full pause cycle to get this 2826 // activity into the stopped state and then finish it. 2827 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2828 mStackSupervisor.mFinishingActivities.add(r); 2829 r.resumeKeyDispatchingLocked(); 2830 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2831 return r; 2832 } 2833 2834 void finishAllActivitiesLocked(boolean immediately) { 2835 boolean noActivitiesInStack = true; 2836 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2837 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2838 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2839 final ActivityRecord r = activities.get(activityNdx); 2840 noActivitiesInStack = false; 2841 if (r.finishing && !immediately) { 2842 continue; 2843 } 2844 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r + " immediately"); 2845 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2846 } 2847 } 2848 if (noActivitiesInStack) { 2849 mActivityContainer.onTaskListEmptyLocked(); 2850 } 2851 } 2852 2853 final boolean shouldUpRecreateTaskLocked(ActivityRecord srec, String destAffinity) { 2854 // Basic case: for simple app-centric recents, we need to recreate 2855 // the task if the affinity has changed. 2856 if (srec == null || srec.task.affinity == null || 2857 !srec.task.affinity.equals(destAffinity)) { 2858 return true; 2859 } 2860 // Document-centric case: an app may be split in to multiple documents; 2861 // they need to re-create their task if this current activity is the root 2862 // of a document, unless simply finishing it will return them to the the 2863 // correct app behind. 2864 if (srec.frontOfTask && srec.task != null) { 2865 // Okay, this activity is at the root of its task. What to do, what to do... 2866 if (srec.task.getTaskToReturnTo() != ActivityRecord.APPLICATION_ACTIVITY_TYPE) { 2867 // Finishing won't return to an application, so we need to recreate. 2868 return true; 2869 } 2870 // We now need to get the task below it to determine what to do. 2871 int taskIdx = mTaskHistory.indexOf(srec.task); 2872 if (taskIdx <= 0) { 2873 Slog.w(TAG, "shouldUpRecreateTask: task not in history for " + srec); 2874 return false; 2875 } 2876 if (taskIdx == 0) { 2877 // At the bottom of the stack, nothing to go back to. 2878 return true; 2879 } 2880 TaskRecord prevTask = mTaskHistory.get(taskIdx); 2881 if (!srec.task.affinity.equals(prevTask.affinity)) { 2882 // These are different apps, so need to recreate. 2883 return true; 2884 } 2885 } 2886 return false; 2887 } 2888 2889 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2890 Intent resultData) { 2891 final ActivityRecord srec = ActivityRecord.forToken(token); 2892 final TaskRecord task = srec.task; 2893 final ArrayList<ActivityRecord> activities = task.mActivities; 2894 final int start = activities.indexOf(srec); 2895 if (!mTaskHistory.contains(task) || (start < 0)) { 2896 return false; 2897 } 2898 int finishTo = start - 1; 2899 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2900 boolean foundParentInTask = false; 2901 final ComponentName dest = destIntent.getComponent(); 2902 if (start > 0 && dest != null) { 2903 for (int i = finishTo; i >= 0; i--) { 2904 ActivityRecord r = activities.get(i); 2905 if (r.info.packageName.equals(dest.getPackageName()) && 2906 r.info.name.equals(dest.getClassName())) { 2907 finishTo = i; 2908 parent = r; 2909 foundParentInTask = true; 2910 break; 2911 } 2912 } 2913 } 2914 2915 IActivityController controller = mService.mController; 2916 if (controller != null) { 2917 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2918 if (next != null) { 2919 // ask watcher if this is allowed 2920 boolean resumeOK = true; 2921 try { 2922 resumeOK = controller.activityResuming(next.packageName); 2923 } catch (RemoteException e) { 2924 mService.mController = null; 2925 Watchdog.getInstance().setActivityController(null); 2926 } 2927 2928 if (!resumeOK) { 2929 return false; 2930 } 2931 } 2932 } 2933 final long origId = Binder.clearCallingIdentity(); 2934 for (int i = start; i > finishTo; i--) { 2935 ActivityRecord r = activities.get(i); 2936 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2937 // Only return the supplied result for the first activity finished 2938 resultCode = Activity.RESULT_CANCELED; 2939 resultData = null; 2940 } 2941 2942 if (parent != null && foundParentInTask) { 2943 final int parentLaunchMode = parent.info.launchMode; 2944 final int destIntentFlags = destIntent.getFlags(); 2945 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2946 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2947 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2948 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2949 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2950 } else { 2951 try { 2952 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2953 destIntent.getComponent(), 0, srec.userId); 2954 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2955 null, aInfo, null, null, parent.appToken, null, 2956 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2957 0, null, true, null, null, null); 2958 foundParentInTask = res == ActivityManager.START_SUCCESS; 2959 } catch (RemoteException e) { 2960 foundParentInTask = false; 2961 } 2962 requestFinishActivityLocked(parent.appToken, resultCode, 2963 resultData, "navigate-up", true); 2964 } 2965 } 2966 Binder.restoreCallingIdentity(origId); 2967 return foundParentInTask; 2968 } 2969 /** 2970 * Perform the common clean-up of an activity record. This is called both 2971 * as part of destroyActivityLocked() (when destroying the client-side 2972 * representation) and cleaning things up as a result of its hosting 2973 * processing going away, in which case there is no remaining client-side 2974 * state to destroy so only the cleanup here is needed. 2975 */ 2976 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2977 boolean setState) { 2978 if (mResumedActivity == r) { 2979 mResumedActivity = null; 2980 } 2981 if (mPausingActivity == r) { 2982 mPausingActivity = null; 2983 } 2984 mService.clearFocusedActivity(r); 2985 2986 r.configDestroy = false; 2987 r.frozenBeforeDestroy = false; 2988 2989 if (setState) { 2990 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2991 r.state = ActivityState.DESTROYED; 2992 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2993 r.app = null; 2994 } 2995 2996 // Make sure this record is no longer in the pending finishes list. 2997 // This could happen, for example, if we are trimming activities 2998 // down to the max limit while they are still waiting to finish. 2999 mStackSupervisor.mFinishingActivities.remove(r); 3000 mStackSupervisor.mWaitingVisibleActivities.remove(r); 3001 3002 // Remove any pending results. 3003 if (r.finishing && r.pendingResults != null) { 3004 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 3005 PendingIntentRecord rec = apr.get(); 3006 if (rec != null) { 3007 mService.cancelIntentSenderLocked(rec, false); 3008 } 3009 } 3010 r.pendingResults = null; 3011 } 3012 3013 if (cleanServices) { 3014 cleanUpActivityServicesLocked(r); 3015 } 3016 3017 // Get rid of any pending idle timeouts. 3018 removeTimeoutsForActivityLocked(r); 3019 if (getVisibleBehindActivity() == r) { 3020 mStackSupervisor.requestVisibleBehindLocked(r, false); 3021 } 3022 } 3023 3024 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 3025 mStackSupervisor.removeTimeoutsForActivityLocked(r); 3026 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3027 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 3028 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3029 r.finishLaunchTickingLocked(); 3030 } 3031 3032 private void removeActivityFromHistoryLocked(ActivityRecord r) { 3033 mStackSupervisor.removeChildActivityContainers(r); 3034 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 3035 r.makeFinishing(); 3036 if (DEBUG_ADD_REMOVE) { 3037 RuntimeException here = new RuntimeException("here"); 3038 here.fillInStackTrace(); 3039 Slog.i(TAG, "Removing activity " + r + " from stack"); 3040 } 3041 r.takeFromHistory(); 3042 removeTimeoutsForActivityLocked(r); 3043 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 3044 r.state = ActivityState.DESTROYED; 3045 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 3046 r.app = null; 3047 mWindowManager.removeAppToken(r.appToken); 3048 if (VALIDATE_TOKENS) { 3049 validateAppTokensLocked(); 3050 } 3051 final TaskRecord task = r.task; 3052 if (task != null && task.removeActivity(r)) { 3053 if (DEBUG_STACK) Slog.i(TAG, 3054 "removeActivityFromHistoryLocked: last activity removed from " + this); 3055 if (mStackSupervisor.isFrontStack(this) && task == topTask() && 3056 task.isOverHomeStack()) { 3057 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 3058 } 3059 removeTask(task); 3060 } 3061 cleanUpActivityServicesLocked(r); 3062 r.removeUriPermissionsLocked(); 3063 } 3064 3065 /** 3066 * Perform clean-up of service connections in an activity record. 3067 */ 3068 final void cleanUpActivityServicesLocked(ActivityRecord r) { 3069 // Throw away any services that have been bound by this activity. 3070 if (r.connections != null) { 3071 Iterator<ConnectionRecord> it = r.connections.iterator(); 3072 while (it.hasNext()) { 3073 ConnectionRecord c = it.next(); 3074 mService.mServices.removeConnectionLocked(c, null, r); 3075 } 3076 r.connections = null; 3077 } 3078 } 3079 3080 final void scheduleDestroyActivities(ProcessRecord owner, String reason) { 3081 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 3082 msg.obj = new ScheduleDestroyArgs(owner, reason); 3083 mHandler.sendMessage(msg); 3084 } 3085 3086 final void destroyActivitiesLocked(ProcessRecord owner, String reason) { 3087 boolean lastIsOpaque = false; 3088 boolean activityRemoved = false; 3089 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3090 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3091 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3092 final ActivityRecord r = activities.get(activityNdx); 3093 if (r.finishing) { 3094 continue; 3095 } 3096 if (r.fullscreen) { 3097 lastIsOpaque = true; 3098 } 3099 if (owner != null && r.app != owner) { 3100 continue; 3101 } 3102 if (!lastIsOpaque) { 3103 continue; 3104 } 3105 if (r.isDestroyable()) { 3106 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 3107 + " resumed=" + mResumedActivity 3108 + " pausing=" + mPausingActivity + " for reason " + reason); 3109 if (destroyActivityLocked(r, true, reason)) { 3110 activityRemoved = true; 3111 } 3112 } 3113 } 3114 } 3115 if (activityRemoved) { 3116 mStackSupervisor.resumeTopActivitiesLocked(); 3117 } 3118 } 3119 3120 final boolean safelyDestroyActivityLocked(ActivityRecord r, String reason) { 3121 if (r.isDestroyable()) { 3122 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 3123 + " resumed=" + mResumedActivity 3124 + " pausing=" + mPausingActivity + " for reason " + reason); 3125 return destroyActivityLocked(r, true, reason); 3126 } 3127 return false; 3128 } 3129 3130 final int releaseSomeActivitiesLocked(ProcessRecord app, ArraySet<TaskRecord> tasks, 3131 String reason) { 3132 // Iterate over tasks starting at the back (oldest) first. 3133 if (DEBUG_RELEASE) Slog.d(TAG, "Trying to release some activities in " + app); 3134 int maxTasks = tasks.size() / 4; 3135 if (maxTasks < 1) { 3136 maxTasks = 1; 3137 } 3138 int numReleased = 0; 3139 for (int taskNdx = 0; taskNdx < mTaskHistory.size() && maxTasks > 0; taskNdx++) { 3140 final TaskRecord task = mTaskHistory.get(taskNdx); 3141 if (!tasks.contains(task)) { 3142 continue; 3143 } 3144 if (DEBUG_RELEASE) Slog.d(TAG, "Looking for activities to release in " + task); 3145 int curNum = 0; 3146 final ArrayList<ActivityRecord> activities = task.mActivities; 3147 for (int actNdx = 0; actNdx < activities.size(); actNdx++) { 3148 final ActivityRecord activity = activities.get(actNdx); 3149 if (activity.app == app && activity.isDestroyable()) { 3150 if (DEBUG_RELEASE) Slog.v(TAG, "Destroying " + activity 3151 + " in state " + activity.state + " resumed=" + mResumedActivity 3152 + " pausing=" + mPausingActivity + " for reason " + reason); 3153 destroyActivityLocked(activity, true, reason); 3154 if (activities.get(actNdx) != activity) { 3155 // Was removed from list, back up so we don't miss the next one. 3156 actNdx--; 3157 } 3158 curNum++; 3159 } 3160 } 3161 if (curNum > 0) { 3162 numReleased += curNum; 3163 maxTasks--; 3164 if (mTaskHistory.get(taskNdx) != task) { 3165 // The entire task got removed, back up so we don't miss the next one. 3166 taskNdx--; 3167 } 3168 } 3169 } 3170 if (DEBUG_RELEASE) Slog.d(TAG, "Done releasing: did " + numReleased + " activities"); 3171 return numReleased; 3172 } 3173 3174 /** 3175 * Destroy the current CLIENT SIDE instance of an activity. This may be 3176 * called both when actually finishing an activity, or when performing 3177 * a configuration switch where we destroy the current client-side object 3178 * but then create a new client-side object for this same HistoryRecord. 3179 */ 3180 final boolean destroyActivityLocked(ActivityRecord r, boolean removeFromApp, String reason) { 3181 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 3182 TAG, "Removing activity from " + reason + ": token=" + r 3183 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 3184 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 3185 r.userId, System.identityHashCode(r), 3186 r.task.taskId, r.shortComponentName, reason); 3187 3188 boolean removedFromHistory = false; 3189 3190 cleanUpActivityLocked(r, false, false); 3191 3192 final boolean hadApp = r.app != null; 3193 3194 if (hadApp) { 3195 if (removeFromApp) { 3196 r.app.activities.remove(r); 3197 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 3198 mService.mHeavyWeightProcess = null; 3199 mService.mHandler.sendEmptyMessage( 3200 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 3201 } 3202 if (r.app.activities.isEmpty()) { 3203 // No longer have activities, so update LRU list and oom adj. 3204 mService.updateLruProcessLocked(r.app, false, null); 3205 mService.updateOomAdjLocked(); 3206 } 3207 } 3208 3209 boolean skipDestroy = false; 3210 3211 try { 3212 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 3213 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 3214 r.configChangeFlags); 3215 } catch (Exception e) { 3216 // We can just ignore exceptions here... if the process 3217 // has crashed, our death notification will clean things 3218 // up. 3219 //Slog.w(TAG, "Exception thrown during finish", e); 3220 if (r.finishing) { 3221 removeActivityFromHistoryLocked(r); 3222 removedFromHistory = true; 3223 skipDestroy = true; 3224 } 3225 } 3226 3227 r.nowVisible = false; 3228 3229 // If the activity is finishing, we need to wait on removing it 3230 // from the list to give it a chance to do its cleanup. During 3231 // that time it may make calls back with its token so we need to 3232 // be able to find it on the list and so we don't want to remove 3233 // it from the list yet. Otherwise, we can just immediately put 3234 // it in the destroyed state since we are not removing it from the 3235 // list. 3236 if (r.finishing && !skipDestroy) { 3237 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 3238 + " (destroy requested)"); 3239 r.state = ActivityState.DESTROYING; 3240 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 3241 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 3242 } else { 3243 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 3244 r.state = ActivityState.DESTROYED; 3245 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3246 r.app = null; 3247 } 3248 } else { 3249 // remove this record from the history. 3250 if (r.finishing) { 3251 removeActivityFromHistoryLocked(r); 3252 removedFromHistory = true; 3253 } else { 3254 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 3255 r.state = ActivityState.DESTROYED; 3256 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3257 r.app = null; 3258 } 3259 } 3260 3261 r.configChangeFlags = 0; 3262 3263 if (!mLRUActivities.remove(r) && hadApp) { 3264 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 3265 } 3266 3267 return removedFromHistory; 3268 } 3269 3270 final void activityDestroyedLocked(IBinder token) { 3271 final long origId = Binder.clearCallingIdentity(); 3272 try { 3273 ActivityRecord r = ActivityRecord.forToken(token); 3274 if (r != null) { 3275 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3276 } 3277 if (DEBUG_CONTAINERS) Slog.d(TAG, "activityDestroyedLocked: r=" + r); 3278 3279 if (isInStackLocked(token) != null) { 3280 if (r.state == ActivityState.DESTROYING) { 3281 cleanUpActivityLocked(r, true, false); 3282 removeActivityFromHistoryLocked(r); 3283 } 3284 } 3285 mStackSupervisor.resumeTopActivitiesLocked(); 3286 } finally { 3287 Binder.restoreCallingIdentity(origId); 3288 } 3289 } 3290 3291 void releaseBackgroundResources() { 3292 if (hasVisibleBehindActivity() && 3293 !mHandler.hasMessages(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG)) { 3294 final ActivityRecord r = getVisibleBehindActivity(); 3295 if (DEBUG_STATES) Slog.d(TAG, "releaseBackgroundResources activtyDisplay=" + 3296 mActivityContainer.mActivityDisplay + " visibleBehind=" + r + " app=" + r.app + 3297 " thread=" + r.app.thread); 3298 if (r != null && r.app != null && r.app.thread != null) { 3299 try { 3300 r.app.thread.scheduleCancelVisibleBehind(r.appToken); 3301 } catch (RemoteException e) { 3302 } 3303 mHandler.sendEmptyMessageDelayed(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG, 500); 3304 } else { 3305 Slog.e(TAG, "releaseBackgroundResources: activity " + r + " no longer running"); 3306 backgroundResourcesReleased(r.appToken); 3307 } 3308 } 3309 } 3310 3311 final void backgroundResourcesReleased(IBinder token) { 3312 mHandler.removeMessages(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG); 3313 final ActivityRecord r = getVisibleBehindActivity(); 3314 if (r != null) { 3315 mStackSupervisor.mStoppingActivities.add(r); 3316 setVisibleBehindActivity(null); 3317 } 3318 mStackSupervisor.resumeTopActivitiesLocked(); 3319 } 3320 3321 boolean hasVisibleBehindActivity() { 3322 return isAttached() && mActivityContainer.mActivityDisplay.hasVisibleBehindActivity(); 3323 } 3324 3325 void setVisibleBehindActivity(ActivityRecord r) { 3326 if (isAttached()) { 3327 mActivityContainer.mActivityDisplay.setVisibleBehindActivity(r); 3328 } 3329 } 3330 3331 ActivityRecord getVisibleBehindActivity() { 3332 return isAttached() ? mActivityContainer.mActivityDisplay.mVisibleBehindActivity : null; 3333 } 3334 3335 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3336 ProcessRecord app, String listName) { 3337 int i = list.size(); 3338 if (DEBUG_CLEANUP) Slog.v( 3339 TAG, "Removing app " + app + " from list " + listName 3340 + " with " + i + " entries"); 3341 while (i > 0) { 3342 i--; 3343 ActivityRecord r = list.get(i); 3344 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3345 if (r.app == app) { 3346 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3347 list.remove(i); 3348 removeTimeoutsForActivityLocked(r); 3349 } 3350 } 3351 } 3352 3353 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3354 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3355 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3356 "mStoppingActivities"); 3357 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3358 "mGoingToSleepActivities"); 3359 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3360 "mWaitingVisibleActivities"); 3361 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3362 "mFinishingActivities"); 3363 3364 boolean hasVisibleActivities = false; 3365 3366 // Clean out the history list. 3367 int i = numActivities(); 3368 if (DEBUG_CLEANUP) Slog.v( 3369 TAG, "Removing app " + app + " from history with " + i + " entries"); 3370 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3371 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3372 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3373 final ActivityRecord r = activities.get(activityNdx); 3374 --i; 3375 if (DEBUG_CLEANUP) Slog.v( 3376 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3377 if (r.app == app) { 3378 boolean remove; 3379 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3380 // Don't currently have state for the activity, or 3381 // it is finishing -- always remove it. 3382 remove = true; 3383 } else if (r.launchCount > 2 && 3384 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3385 // We have launched this activity too many times since it was 3386 // able to run, so give up and remove it. 3387 remove = true; 3388 } else { 3389 // The process may be gone, but the activity lives on! 3390 remove = false; 3391 } 3392 if (remove) { 3393 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3394 RuntimeException here = new RuntimeException("here"); 3395 here.fillInStackTrace(); 3396 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3397 + ": haveState=" + r.haveState 3398 + " stateNotNeeded=" + r.stateNotNeeded 3399 + " finishing=" + r.finishing 3400 + " state=" + r.state, here); 3401 } 3402 if (!r.finishing) { 3403 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3404 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3405 r.userId, System.identityHashCode(r), 3406 r.task.taskId, r.shortComponentName, 3407 "proc died without state saved"); 3408 if (r.state == ActivityState.RESUMED) { 3409 mService.updateUsageStats(r, false); 3410 } 3411 } 3412 removeActivityFromHistoryLocked(r); 3413 3414 } else { 3415 // We have the current state for this activity, so 3416 // it can be restarted later when needed. 3417 if (localLOGV) Slog.v( 3418 TAG, "Keeping entry, setting app to null"); 3419 if (r.visible) { 3420 hasVisibleActivities = true; 3421 } 3422 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3423 + r); 3424 r.app = null; 3425 r.nowVisible = false; 3426 if (!r.haveState) { 3427 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3428 "App died, clearing saved state of " + r); 3429 r.icicle = null; 3430 } 3431 } 3432 3433 cleanUpActivityLocked(r, true, true); 3434 } 3435 } 3436 } 3437 3438 return hasVisibleActivities; 3439 } 3440 3441 final void updateTransitLocked(int transit, Bundle options) { 3442 if (options != null) { 3443 ActivityRecord r = topRunningActivityLocked(null); 3444 if (r != null && r.state != ActivityState.RESUMED) { 3445 r.updateOptionsLocked(options); 3446 } else { 3447 ActivityOptions.abort(options); 3448 } 3449 } 3450 mWindowManager.prepareAppTransition(transit, false); 3451 } 3452 3453 void updateTaskMovement(TaskRecord task, boolean toFront) { 3454 if (task.isPersistable) { 3455 task.mLastTimeMoved = System.currentTimeMillis(); 3456 // Sign is used to keep tasks sorted when persisted. Tasks sent to the bottom most 3457 // recently will be most negative, tasks sent to the bottom before that will be less 3458 // negative. Similarly for recent tasks moved to the top which will be most positive. 3459 if (!toFront) { 3460 task.mLastTimeMoved *= -1; 3461 } 3462 } 3463 } 3464 3465 void moveHomeStackTaskToTop(int homeStackTaskType) { 3466 final int top = mTaskHistory.size() - 1; 3467 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3468 final TaskRecord task = mTaskHistory.get(taskNdx); 3469 if (task.taskType == homeStackTaskType) { 3470 if (DEBUG_TASKS || DEBUG_STACK) 3471 Slog.d(TAG, "moveHomeStackTaskToTop: moving " + task); 3472 mTaskHistory.remove(taskNdx); 3473 mTaskHistory.add(top, task); 3474 updateTaskMovement(task, true); 3475 mWindowManager.moveTaskToTop(task.taskId); 3476 return; 3477 } 3478 } 3479 } 3480 3481 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3482 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3483 3484 final int numTasks = mTaskHistory.size(); 3485 final int index = mTaskHistory.indexOf(tr); 3486 if (numTasks == 0 || index < 0) { 3487 // nothing to do! 3488 if (reason != null && 3489 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3490 ActivityOptions.abort(options); 3491 } else { 3492 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3493 } 3494 return; 3495 } 3496 3497 moveToFront(); 3498 3499 // Shift all activities with this task up to the top 3500 // of the stack, keeping them in the same internal order. 3501 insertTaskAtTop(tr); 3502 3503 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3504 if (reason != null && 3505 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3506 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3507 ActivityRecord r = topRunningActivityLocked(null); 3508 if (r != null) { 3509 mNoAnimActivities.add(r); 3510 } 3511 ActivityOptions.abort(options); 3512 } else { 3513 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3514 } 3515 3516 mWindowManager.moveTaskToTop(tr.taskId); 3517 3518 mStackSupervisor.resumeTopActivitiesLocked(); 3519 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3520 3521 if (VALIDATE_TOKENS) { 3522 validateAppTokensLocked(); 3523 } 3524 } 3525 3526 /** 3527 * Worker method for rearranging history stack. Implements the function of moving all 3528 * activities for a specific task (gathering them if disjoint) into a single group at the 3529 * bottom of the stack. 3530 * 3531 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3532 * to premeptively cancel the move. 3533 * 3534 * @param taskId The taskId to collect and move to the bottom. 3535 * @return Returns true if the move completed, false if not. 3536 */ 3537 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3538 final TaskRecord tr = taskForIdLocked(taskId); 3539 if (tr == null) { 3540 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3541 return false; 3542 } 3543 3544 Slog.i(TAG, "moveTaskToBack: " + tr); 3545 3546 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3547 3548 // If we have a watcher, preflight the move before committing to it. First check 3549 // for *other* available tasks, but if none are available, then try again allowing the 3550 // current task to be selected. 3551 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3552 ActivityRecord next = topRunningActivityLocked(null, taskId); 3553 if (next == null) { 3554 next = topRunningActivityLocked(null, 0); 3555 } 3556 if (next != null) { 3557 // ask watcher if this is allowed 3558 boolean moveOK = true; 3559 try { 3560 moveOK = mService.mController.activityResuming(next.packageName); 3561 } catch (RemoteException e) { 3562 mService.mController = null; 3563 Watchdog.getInstance().setActivityController(null); 3564 } 3565 if (!moveOK) { 3566 return false; 3567 } 3568 } 3569 } 3570 3571 if (DEBUG_TRANSITION) Slog.v(TAG, 3572 "Prepare to back transition: task=" + taskId); 3573 3574 mTaskHistory.remove(tr); 3575 mTaskHistory.add(0, tr); 3576 updateTaskMovement(tr, false); 3577 3578 // There is an assumption that moving a task to the back moves it behind the home activity. 3579 // We make sure here that some activity in the stack will launch home. 3580 int numTasks = mTaskHistory.size(); 3581 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3582 final TaskRecord task = mTaskHistory.get(taskNdx); 3583 if (task.isOverHomeStack()) { 3584 break; 3585 } 3586 if (taskNdx == 1) { 3587 // Set the last task before tr to go to home. 3588 task.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3589 } 3590 } 3591 3592 if (reason != null && 3593 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3594 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3595 ActivityRecord r = topRunningActivityLocked(null); 3596 if (r != null) { 3597 mNoAnimActivities.add(r); 3598 } 3599 } else { 3600 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3601 } 3602 mWindowManager.moveTaskToBottom(taskId); 3603 3604 if (VALIDATE_TOKENS) { 3605 validateAppTokensLocked(); 3606 } 3607 3608 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3609 if (task == tr && tr.isOverHomeStack() || numTasks <= 1 && isOnHomeDisplay()) { 3610 final int taskToReturnTo = tr.getTaskToReturnTo(); 3611 tr.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 3612 return mStackSupervisor.resumeHomeStackTask(taskToReturnTo, null); 3613 } 3614 3615 mStackSupervisor.resumeTopActivitiesLocked(); 3616 return true; 3617 } 3618 3619 static final void logStartActivity(int tag, ActivityRecord r, 3620 TaskRecord task) { 3621 final Uri data = r.intent.getData(); 3622 final String strData = data != null ? data.toSafeString() : null; 3623 3624 EventLog.writeEvent(tag, 3625 r.userId, System.identityHashCode(r), task.taskId, 3626 r.shortComponentName, r.intent.getAction(), 3627 r.intent.getType(), strData, r.intent.getFlags()); 3628 } 3629 3630 /** 3631 * Make sure the given activity matches the current configuration. Returns 3632 * false if the activity had to be destroyed. Returns true if the 3633 * configuration is the same, or the activity will remain running as-is 3634 * for whatever reason. Ensures the HistoryRecord is updated with the 3635 * correct configuration and all other bookkeeping is handled. 3636 */ 3637 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3638 int globalChanges) { 3639 if (mConfigWillChange) { 3640 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3641 "Skipping config check (will change): " + r); 3642 return true; 3643 } 3644 3645 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3646 "Ensuring correct configuration: " + r); 3647 3648 // Short circuit: if the two configurations are the exact same 3649 // object (the common case), then there is nothing to do. 3650 Configuration newConfig = mService.mConfiguration; 3651 if (r.configuration == newConfig && !r.forceNewConfig) { 3652 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3653 "Configuration unchanged in " + r); 3654 return true; 3655 } 3656 3657 // We don't worry about activities that are finishing. 3658 if (r.finishing) { 3659 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3660 "Configuration doesn't matter in finishing " + r); 3661 r.stopFreezingScreenLocked(false); 3662 return true; 3663 } 3664 3665 // Okay we now are going to make this activity have the new config. 3666 // But then we need to figure out how it needs to deal with that. 3667 Configuration oldConfig = r.configuration; 3668 r.configuration = newConfig; 3669 3670 // Determine what has changed. May be nothing, if this is a config 3671 // that has come back from the app after going idle. In that case 3672 // we just want to leave the official config object now in the 3673 // activity and do nothing else. 3674 final int changes = oldConfig.diff(newConfig); 3675 if (changes == 0 && !r.forceNewConfig) { 3676 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3677 "Configuration no differences in " + r); 3678 return true; 3679 } 3680 3681 // If the activity isn't currently running, just leave the new 3682 // configuration and it will pick that up next time it starts. 3683 if (r.app == null || r.app.thread == null) { 3684 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3685 "Configuration doesn't matter not running " + r); 3686 r.stopFreezingScreenLocked(false); 3687 r.forceNewConfig = false; 3688 return true; 3689 } 3690 3691 // Figure out how to handle the changes between the configurations. 3692 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3693 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3694 + Integer.toHexString(changes) + ", handles=0x" 3695 + Integer.toHexString(r.info.getRealConfigChanged()) 3696 + ", newConfig=" + newConfig); 3697 } 3698 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3699 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3700 r.configChangeFlags |= changes; 3701 r.startFreezingScreenLocked(r.app, globalChanges); 3702 r.forceNewConfig = false; 3703 if (r.app == null || r.app.thread == null) { 3704 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3705 "Config is destroying non-running " + r); 3706 destroyActivityLocked(r, true, "config"); 3707 } else if (r.state == ActivityState.PAUSING) { 3708 // A little annoying: we are waiting for this activity to 3709 // finish pausing. Let's not do anything now, but just 3710 // flag that it needs to be restarted when done pausing. 3711 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3712 "Config is skipping already pausing " + r); 3713 r.configDestroy = true; 3714 return true; 3715 } else if (r.state == ActivityState.RESUMED) { 3716 // Try to optimize this case: the configuration is changing 3717 // and we need to restart the top, resumed activity. 3718 // Instead of doing the normal handshaking, just say 3719 // "restart!". 3720 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3721 "Config is relaunching resumed " + r); 3722 relaunchActivityLocked(r, r.configChangeFlags, true); 3723 r.configChangeFlags = 0; 3724 } else { 3725 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3726 "Config is relaunching non-resumed " + r); 3727 relaunchActivityLocked(r, r.configChangeFlags, false); 3728 r.configChangeFlags = 0; 3729 } 3730 3731 // All done... tell the caller we weren't able to keep this 3732 // activity around. 3733 return false; 3734 } 3735 3736 // Default case: the activity can handle this new configuration, so 3737 // hand it over. Note that we don't need to give it the new 3738 // configuration, since we always send configuration changes to all 3739 // process when they happen so it can just use whatever configuration 3740 // it last got. 3741 if (r.app != null && r.app.thread != null) { 3742 try { 3743 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3744 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3745 } catch (RemoteException e) { 3746 // If process died, whatever. 3747 } 3748 } 3749 r.stopFreezingScreenLocked(false); 3750 3751 return true; 3752 } 3753 3754 private boolean relaunchActivityLocked(ActivityRecord r, 3755 int changes, boolean andResume) { 3756 List<ResultInfo> results = null; 3757 List<Intent> newIntents = null; 3758 if (andResume) { 3759 results = r.results; 3760 newIntents = r.newIntents; 3761 } 3762 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3763 + " with results=" + results + " newIntents=" + newIntents 3764 + " andResume=" + andResume); 3765 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3766 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3767 r.task.taskId, r.shortComponentName); 3768 3769 r.startFreezingScreenLocked(r.app, 0); 3770 3771 mStackSupervisor.removeChildActivityContainers(r); 3772 3773 try { 3774 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3775 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3776 + r); 3777 r.forceNewConfig = false; 3778 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3779 changes, !andResume, new Configuration(mService.mConfiguration)); 3780 // Note: don't need to call pauseIfSleepingLocked() here, because 3781 // the caller will only pass in 'andResume' if this activity is 3782 // currently resumed, which implies we aren't sleeping. 3783 } catch (RemoteException e) { 3784 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3785 } 3786 3787 if (andResume) { 3788 r.results = null; 3789 r.newIntents = null; 3790 r.state = ActivityState.RESUMED; 3791 } else { 3792 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3793 r.state = ActivityState.PAUSED; 3794 } 3795 3796 return true; 3797 } 3798 3799 boolean willActivityBeVisibleLocked(IBinder token) { 3800 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3801 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3802 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3803 final ActivityRecord r = activities.get(activityNdx); 3804 if (r.appToken == token) { 3805 return true; 3806 } 3807 if (r.fullscreen && !r.finishing) { 3808 return false; 3809 } 3810 } 3811 } 3812 final ActivityRecord r = ActivityRecord.forToken(token); 3813 if (r == null) { 3814 return false; 3815 } 3816 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3817 + " would have returned true for r=" + r); 3818 return !r.finishing; 3819 } 3820 3821 void closeSystemDialogsLocked() { 3822 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3823 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3824 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3825 final ActivityRecord r = activities.get(activityNdx); 3826 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3827 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3828 } 3829 } 3830 } 3831 } 3832 3833 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3834 boolean didSomething = false; 3835 TaskRecord lastTask = null; 3836 ComponentName homeActivity = null; 3837 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3838 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3839 int numActivities = activities.size(); 3840 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3841 ActivityRecord r = activities.get(activityNdx); 3842 final boolean samePackage = r.packageName.equals(name) 3843 || (name == null && r.userId == userId); 3844 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3845 && (samePackage || r.task == lastTask) 3846 && (r.app == null || evenPersistent || !r.app.persistent)) { 3847 if (!doit) { 3848 if (r.finishing) { 3849 // If this activity is just finishing, then it is not 3850 // interesting as far as something to stop. 3851 continue; 3852 } 3853 return true; 3854 } 3855 if (r.isHomeActivity()) { 3856 if (homeActivity != null && homeActivity.equals(r.realActivity)) { 3857 Slog.i(TAG, "Skip force-stop again " + r); 3858 continue; 3859 } else { 3860 homeActivity = r.realActivity; 3861 } 3862 } 3863 didSomething = true; 3864 Slog.i(TAG, " Force finishing activity " + r); 3865 if (samePackage) { 3866 if (r.app != null) { 3867 r.app.removed = true; 3868 } 3869 r.app = null; 3870 } 3871 lastTask = r.task; 3872 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3873 true)) { 3874 // r has been deleted from mActivities, accommodate. 3875 --numActivities; 3876 --activityNdx; 3877 } 3878 } 3879 } 3880 } 3881 return didSomething; 3882 } 3883 3884 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3885 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3886 final TaskRecord task = mTaskHistory.get(taskNdx); 3887 ActivityRecord r = null; 3888 ActivityRecord top = null; 3889 int numActivities = 0; 3890 int numRunning = 0; 3891 final ArrayList<ActivityRecord> activities = task.mActivities; 3892 if (activities.isEmpty()) { 3893 continue; 3894 } 3895 if (!allowed && !task.isHomeTask() && task.effectiveUid != callingUid) { 3896 continue; 3897 } 3898 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3899 r = activities.get(activityNdx); 3900 3901 // Initialize state for next task if needed. 3902 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3903 top = r; 3904 numActivities = numRunning = 0; 3905 } 3906 3907 // Add 'r' into the current task. 3908 numActivities++; 3909 if (r.app != null && r.app.thread != null) { 3910 numRunning++; 3911 } 3912 3913 if (localLOGV) Slog.v( 3914 TAG, r.intent.getComponent().flattenToShortString() 3915 + ": task=" + r.task); 3916 } 3917 3918 RunningTaskInfo ci = new RunningTaskInfo(); 3919 ci.id = task.taskId; 3920 ci.baseActivity = r.intent.getComponent(); 3921 ci.topActivity = top.intent.getComponent(); 3922 ci.lastActiveTime = task.lastActiveTime; 3923 3924 if (top.task != null) { 3925 ci.description = top.task.lastDescription; 3926 } 3927 ci.numActivities = numActivities; 3928 ci.numRunning = numRunning; 3929 //System.out.println( 3930 // "#" + maxNum + ": " + " descr=" + ci.description); 3931 list.add(ci); 3932 } 3933 } 3934 3935 public void unhandledBackLocked() { 3936 final int top = mTaskHistory.size() - 1; 3937 if (DEBUG_SWITCH) Slog.d( 3938 TAG, "Performing unhandledBack(): top activity at " + top); 3939 if (top >= 0) { 3940 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3941 int activityTop = activities.size() - 1; 3942 if (activityTop > 0) { 3943 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3944 "unhandled-back", true); 3945 } 3946 } 3947 } 3948 3949 /** 3950 * Reset local parameters because an app's activity died. 3951 * @param app The app of the activity that died. 3952 * @return result from removeHistoryRecordsForAppLocked. 3953 */ 3954 boolean handleAppDiedLocked(ProcessRecord app) { 3955 if (mPausingActivity != null && mPausingActivity.app == app) { 3956 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3957 "App died while pausing: " + mPausingActivity); 3958 mPausingActivity = null; 3959 } 3960 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3961 mLastPausedActivity = null; 3962 mLastNoHistoryActivity = null; 3963 } 3964 3965 return removeHistoryRecordsForAppLocked(app); 3966 } 3967 3968 void handleAppCrashLocked(ProcessRecord app) { 3969 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3970 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3971 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3972 final ActivityRecord r = activities.get(activityNdx); 3973 if (r.app == app) { 3974 Slog.w(TAG, " Force finishing activity " 3975 + r.intent.getComponent().flattenToShortString()); 3976 // Force the destroy to skip right to removal. 3977 r.app = null; 3978 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 3979 } 3980 } 3981 } 3982 } 3983 3984 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3985 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3986 boolean printed = false; 3987 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3988 final TaskRecord task = mTaskHistory.get(taskNdx); 3989 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3990 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3991 dumpClient, dumpPackage, needSep, header, 3992 " Task id #" + task.taskId); 3993 if (printed) { 3994 header = null; 3995 } 3996 } 3997 return printed; 3998 } 3999 4000 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 4001 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 4002 4003 if ("all".equals(name)) { 4004 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4005 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 4006 } 4007 } else if ("top".equals(name)) { 4008 final int top = mTaskHistory.size() - 1; 4009 if (top >= 0) { 4010 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 4011 int listTop = list.size() - 1; 4012 if (listTop >= 0) { 4013 activities.add(list.get(listTop)); 4014 } 4015 } 4016 } else { 4017 ItemMatcher matcher = new ItemMatcher(); 4018 matcher.build(name); 4019 4020 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4021 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 4022 if (matcher.match(r1, r1.intent.getComponent())) { 4023 activities.add(r1); 4024 } 4025 } 4026 } 4027 } 4028 4029 return activities; 4030 } 4031 4032 ActivityRecord restartPackage(String packageName) { 4033 ActivityRecord starting = topRunningActivityLocked(null); 4034 4035 // All activities that came from the package must be 4036 // restarted as if there was a config change. 4037 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4038 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 4039 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 4040 final ActivityRecord a = activities.get(activityNdx); 4041 if (a.info.packageName.equals(packageName)) { 4042 a.forceNewConfig = true; 4043 if (starting != null && a == starting && a.visible) { 4044 a.startFreezingScreenLocked(starting.app, 4045 ActivityInfo.CONFIG_SCREEN_LAYOUT); 4046 } 4047 } 4048 } 4049 } 4050 4051 return starting; 4052 } 4053 4054 void removeTask(TaskRecord task) { 4055 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 4056 mWindowManager.removeTask(task.taskId); 4057 final ActivityRecord r = mResumedActivity; 4058 if (r != null && r.task == task) { 4059 mResumedActivity = null; 4060 } 4061 4062 final int taskNdx = mTaskHistory.indexOf(task); 4063 final int topTaskNdx = mTaskHistory.size() - 1; 4064 if (task.isOverHomeStack() && taskNdx < topTaskNdx) { 4065 final TaskRecord nextTask = mTaskHistory.get(taskNdx + 1); 4066 if (!nextTask.isOverHomeStack()) { 4067 nextTask.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 4068 } 4069 } 4070 mTaskHistory.remove(task); 4071 updateTaskMovement(task, true); 4072 4073 if (task.mActivities.isEmpty()) { 4074 final boolean isVoiceSession = task.voiceSession != null; 4075 if (isVoiceSession) { 4076 try { 4077 task.voiceSession.taskFinished(task.intent, task.taskId); 4078 } catch (RemoteException e) { 4079 } 4080 } 4081 if (task.autoRemoveFromRecents() || isVoiceSession) { 4082 // Task creator asked to remove this when done, or this task was a voice 4083 // interaction, so it should not remain on the recent tasks list. 4084 mService.mRecentTasks.remove(task); 4085 task.removedFromRecents(mService.mTaskPersister); 4086 } 4087 } 4088 4089 if (mTaskHistory.isEmpty()) { 4090 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 4091 if (isOnHomeDisplay()) { 4092 mStackSupervisor.moveHomeStack(!isHomeStack()); 4093 } 4094 if (mStacks != null) { 4095 mStacks.remove(this); 4096 mStacks.add(0, this); 4097 } 4098 mActivityContainer.onTaskListEmptyLocked(); 4099 } 4100 } 4101 4102 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 4103 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 4104 boolean toTop) { 4105 TaskRecord task = new TaskRecord(mService, taskId, info, intent, voiceSession, 4106 voiceInteractor); 4107 addTask(task, toTop, false); 4108 return task; 4109 } 4110 4111 ArrayList<TaskRecord> getAllTasks() { 4112 return new ArrayList<TaskRecord>(mTaskHistory); 4113 } 4114 4115 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 4116 task.stack = this; 4117 if (toTop) { 4118 insertTaskAtTop(task); 4119 } else { 4120 mTaskHistory.add(0, task); 4121 updateTaskMovement(task, false); 4122 } 4123 if (!moving && task.voiceSession != null) { 4124 try { 4125 task.voiceSession.taskStarted(task.intent, task.taskId); 4126 } catch (RemoteException e) { 4127 } 4128 } 4129 } 4130 4131 public int getStackId() { 4132 return mStackId; 4133 } 4134 4135 @Override 4136 public String toString() { 4137 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 4138 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 4139 } 4140} 4141