ActivityStack.java revision 7622a0f8e4198adf0aae5d4e167ee132b34f4cdb
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 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 429 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 430 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 431 final ActivityRecord r = activities.get(activityNdx); 432 if (!r.finishing) { 433 return r; 434 } 435 } 436 } 437 return null; 438 } 439 440 final TaskRecord topTask() { 441 final int size = mTaskHistory.size(); 442 if (size > 0) { 443 return mTaskHistory.get(size - 1); 444 } 445 return null; 446 } 447 448 TaskRecord taskForIdLocked(int id) { 449 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 450 final TaskRecord task = mTaskHistory.get(taskNdx); 451 if (task.taskId == id) { 452 return task; 453 } 454 } 455 return null; 456 } 457 458 ActivityRecord isInStackLocked(IBinder token) { 459 final ActivityRecord r = ActivityRecord.forToken(token); 460 if (r != null) { 461 final TaskRecord task = r.task; 462 if (task != null && task.mActivities.contains(r) && mTaskHistory.contains(task)) { 463 if (task.stack != this) Slog.w(TAG, 464 "Illegal state! task does not point to stack it is in."); 465 return r; 466 } 467 } 468 return null; 469 } 470 471 final boolean updateLRUListLocked(ActivityRecord r) { 472 final boolean hadit = mLRUActivities.remove(r); 473 mLRUActivities.add(r); 474 return hadit; 475 } 476 477 final boolean isHomeStack() { 478 return mStackId == HOME_STACK_ID; 479 } 480 481 final boolean isOnHomeDisplay() { 482 return isAttached() && 483 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 484 } 485 486 final void moveToFront() { 487 if (isAttached()) { 488 if (isOnHomeDisplay()) { 489 mStackSupervisor.moveHomeStack(isHomeStack()); 490 } 491 mStacks.remove(this); 492 mStacks.add(this); 493 } 494 } 495 496 final boolean isAttached() { 497 return mStacks != null; 498 } 499 500 /** 501 * Returns the top activity in any existing task matching the given 502 * Intent. Returns null if no such task is found. 503 */ 504 ActivityRecord findTaskLocked(ActivityRecord target) { 505 Intent intent = target.intent; 506 ActivityInfo info = target.info; 507 ComponentName cls = intent.getComponent(); 508 if (info.targetActivity != null) { 509 cls = new ComponentName(info.packageName, info.targetActivity); 510 } 511 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 512 boolean isDocument = intent != null & intent.isDocument(); 513 // If documentData is non-null then it must match the existing task data. 514 Uri documentData = isDocument ? intent.getData() : null; 515 516 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 517 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 518 final TaskRecord task = mTaskHistory.get(taskNdx); 519 if (task.voiceSession != null) { 520 // We never match voice sessions; those always run independently. 521 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 522 continue; 523 } 524 if (task.userId != userId) { 525 // Looking for a different task. 526 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 527 continue; 528 } 529 final ActivityRecord r = task.getTopActivity(); 530 if (r == null || r.finishing || r.userId != userId || 531 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 532 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 533 continue; 534 } 535 536 final Intent taskIntent = task.intent; 537 final Intent affinityIntent = task.affinityIntent; 538 final boolean taskIsDocument; 539 final Uri taskDocumentData; 540 if (taskIntent != null && taskIntent.isDocument()) { 541 taskIsDocument = true; 542 taskDocumentData = taskIntent.getData(); 543 } else if (affinityIntent != null && affinityIntent.isDocument()) { 544 taskIsDocument = true; 545 taskDocumentData = affinityIntent.getData(); 546 } else { 547 taskIsDocument = false; 548 taskDocumentData = null; 549 } 550 551 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 552 + taskIntent.getComponent().flattenToShortString() 553 + "/aff=" + r.task.rootAffinity + " to new cls=" 554 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 555 if (!isDocument && !taskIsDocument && task.rootAffinity != null) { 556 if (task.rootAffinity.equals(target.taskAffinity)) { 557 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 558 return r; 559 } 560 } else if (taskIntent != null && taskIntent.getComponent() != null && 561 taskIntent.getComponent().compareTo(cls) == 0 && 562 Objects.equals(documentData, taskDocumentData)) { 563 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 564 //dump(); 565 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 566 + r.intent); 567 return r; 568 } else if (affinityIntent != null && affinityIntent.getComponent() != null && 569 affinityIntent.getComponent().compareTo(cls) == 0 && 570 Objects.equals(documentData, taskDocumentData)) { 571 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 572 //dump(); 573 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 574 + r.intent); 575 return r; 576 } else if (DEBUG_TASKS) { 577 Slog.d(TAG, "Not a match: " + task); 578 } 579 } 580 581 return null; 582 } 583 584 /** 585 * Returns the first activity (starting from the top of the stack) that 586 * is the same as the given activity. Returns null if no such activity 587 * is found. 588 */ 589 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 590 ComponentName cls = intent.getComponent(); 591 if (info.targetActivity != null) { 592 cls = new ComponentName(info.packageName, info.targetActivity); 593 } 594 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 595 596 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 597 TaskRecord task = mTaskHistory.get(taskNdx); 598 if (!isCurrentProfileLocked(task.userId)) { 599 return null; 600 } 601 final ArrayList<ActivityRecord> activities = task.mActivities; 602 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 603 ActivityRecord r = activities.get(activityNdx); 604 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 605 //Slog.i(TAG, "Found matching class!"); 606 //dump(); 607 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 608 return r; 609 } 610 } 611 } 612 613 return null; 614 } 615 616 /* 617 * Move the activities around in the stack to bring a user to the foreground. 618 */ 619 final void switchUserLocked(int userId) { 620 if (mCurrentUser == userId) { 621 return; 622 } 623 mCurrentUser = userId; 624 625 // Move userId's tasks to the top. 626 int index = mTaskHistory.size(); 627 for (int i = 0; i < index; ) { 628 TaskRecord task = mTaskHistory.get(i); 629 if (isCurrentProfileLocked(task.userId)) { 630 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 631 " moving " + task + " to top"); 632 mTaskHistory.remove(i); 633 mTaskHistory.add(task); 634 --index; 635 // Use same value for i. 636 } else { 637 ++i; 638 } 639 } 640 if (VALIDATE_TOKENS) { 641 validateAppTokensLocked(); 642 } 643 } 644 645 void minimalResumeActivityLocked(ActivityRecord r) { 646 r.state = ActivityState.RESUMED; 647 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 648 + " (starting new instance)"); 649 r.stopped = false; 650 mResumedActivity = r; 651 r.task.touchActiveTime(); 652 mService.addRecentTaskLocked(r.task); 653 completeResumeLocked(r); 654 mStackSupervisor.checkReadyForSleepLocked(); 655 setLaunchTime(r); 656 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 657 } 658 659 private void startLaunchTraces() { 660 if (mFullyDrawnStartTime != 0) { 661 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 662 } 663 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 664 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 665 } 666 667 private void stopFullyDrawnTraceIfNeeded() { 668 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 669 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 670 mFullyDrawnStartTime = 0; 671 } 672 } 673 674 void setLaunchTime(ActivityRecord r) { 675 if (r.displayStartTime == 0) { 676 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 677 if (mLaunchStartTime == 0) { 678 startLaunchTraces(); 679 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 680 } 681 } else if (mLaunchStartTime == 0) { 682 startLaunchTraces(); 683 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 684 } 685 } 686 687 void clearLaunchTime(ActivityRecord r) { 688 // Make sure that there is no activity waiting for this to launch. 689 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 690 r.displayStartTime = r.fullyDrawnStartTime = 0; 691 } else { 692 mStackSupervisor.removeTimeoutsForActivityLocked(r); 693 mStackSupervisor.scheduleIdleTimeoutLocked(r); 694 } 695 } 696 697 void awakeFromSleepingLocked() { 698 // Ensure activities are no longer sleeping. 699 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 700 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 701 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 702 activities.get(activityNdx).setSleeping(false); 703 } 704 } 705 } 706 707 /** 708 * @return true if something must be done before going to sleep. 709 */ 710 boolean checkReadyForSleepLocked() { 711 if (mResumedActivity != null) { 712 // Still have something resumed; can't sleep until it is paused. 713 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 714 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 715 startPausingLocked(false, true, false, false); 716 return true; 717 } 718 if (mPausingActivity != null) { 719 // Still waiting for something to pause; can't sleep yet. 720 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 721 return true; 722 } 723 724 return false; 725 } 726 727 void goToSleep() { 728 ensureActivitiesVisibleLocked(null, 0); 729 730 // Make sure any stopped but visible activities are now sleeping. 731 // This ensures that the activity's onStop() is called. 732 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 733 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 734 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 735 final ActivityRecord r = activities.get(activityNdx); 736 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 737 r.setSleeping(true); 738 } 739 } 740 } 741 } 742 743 /** 744 * This resets the saved state from the last screenshot, forcing a new screenshot to be taken 745 * again when requested. 746 */ 747 private void invalidateLastScreenshot() { 748 mLastScreenshotActivity = null; 749 if (mLastScreenshotBitmap != null) { 750 mLastScreenshotBitmap.recycle(); 751 } 752 mLastScreenshotBitmap = null; 753 } 754 755 public final Bitmap screenshotActivities(ActivityRecord who) { 756 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "screenshotActivities: " + who); 757 if (who.noDisplay) { 758 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tNo display"); 759 return null; 760 } 761 762 if (isHomeStack()) { 763 // This is an optimization -- since we never show Home or Recents within Recents itself, 764 // we can just go ahead and skip taking the screenshot if this is the home stack. In 765 // the case where the most recent task is not the task that was supplied, then the stack 766 // has changed, so invalidate the last screenshot(). 767 invalidateLastScreenshot(); 768 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tIs Home stack? " + isHomeStack()); 769 return null; 770 } 771 772 int w = mService.mThumbnailWidth; 773 int h = mService.mThumbnailHeight; 774 if (w > 0) { 775 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 776 || mLastScreenshotActivity.state == ActivityState.RESUMED 777 || mLastScreenshotBitmap.getWidth() != w 778 || mLastScreenshotBitmap.getHeight() != h) { 779 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tUpdating screenshot"); 780 mLastScreenshotActivity = who; 781 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 782 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 783 } 784 if (mLastScreenshotBitmap != null) { 785 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tReusing last screenshot"); 786 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 787 } 788 } 789 Slog.e(TAG, "Invalid thumbnail dimensions: " + w + "x" + h); 790 return null; 791 } 792 793 /** 794 * Start pausing the currently resumed activity. It is an error to call this if there 795 * is already an activity being paused or there is no resumed activity. 796 * 797 * @param userLeaving True if this should result in an onUserLeaving to the current activity. 798 * @param uiSleeping True if this is happening with the user interface going to sleep (the 799 * screen turning off). 800 * @param resuming True if this is being called as part of resuming the top activity, so 801 * we shouldn't try to instigate a resume here. 802 * @param dontWait True if the caller does not want to wait for the pause to complete. If 803 * set to true, we will immediately complete the pause here before returning. 804 * @return Returns true if an activity now is in the PAUSING state, and we are waiting for 805 * it to tell us when it is done. 806 */ 807 final boolean startPausingLocked(boolean userLeaving, boolean uiSleeping, boolean resuming, 808 boolean dontWait) { 809 if (mPausingActivity != null) { 810 Slog.wtf(TAG, "Going to pause when pause is already pending for " + mPausingActivity); 811 completePauseLocked(false); 812 } 813 ActivityRecord prev = mResumedActivity; 814 if (prev == null) { 815 if (!resuming) { 816 Slog.wtf(TAG, "Trying to pause when nothing is resumed"); 817 mStackSupervisor.resumeTopActivitiesLocked(); 818 } 819 return false; 820 } 821 822 if (mActivityContainer.mParentActivity == null) { 823 // Top level stack, not a child. Look for child stacks. 824 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping, resuming, dontWait); 825 } 826 827 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 828 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 829 mResumedActivity = null; 830 mPausingActivity = prev; 831 mLastPausedActivity = prev; 832 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 833 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 834 prev.state = ActivityState.PAUSING; 835 prev.task.touchActiveTime(); 836 clearLaunchTime(prev); 837 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 838 if (mService.mHasRecents && (next == null || next.noDisplay || next.task != prev.task)) { 839 prev.updateThumbnail(screenshotActivities(prev), null); 840 } 841 stopFullyDrawnTraceIfNeeded(); 842 843 mService.updateCpuStats(); 844 845 if (prev.app != null && prev.app.thread != null) { 846 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 847 try { 848 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 849 prev.userId, System.identityHashCode(prev), 850 prev.shortComponentName); 851 mService.updateUsageStats(prev, false); 852 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 853 userLeaving, prev.configChangeFlags, dontWait); 854 } catch (Exception e) { 855 // Ignore exception, if process died other code will cleanup. 856 Slog.w(TAG, "Exception thrown during pause", e); 857 mPausingActivity = null; 858 mLastPausedActivity = null; 859 mLastNoHistoryActivity = null; 860 } 861 } else { 862 mPausingActivity = null; 863 mLastPausedActivity = null; 864 mLastNoHistoryActivity = null; 865 } 866 867 // If we are not going to sleep, we want to ensure the device is 868 // awake until the next activity is started. 869 if (!mService.isSleepingOrShuttingDown()) { 870 mStackSupervisor.acquireLaunchWakelock(); 871 } 872 873 if (mPausingActivity != null) { 874 // Have the window manager pause its key dispatching until the new 875 // activity has started. If we're pausing the activity just because 876 // the screen is being turned off and the UI is sleeping, don't interrupt 877 // key dispatch; the same activity will pick it up again on wakeup. 878 if (!uiSleeping) { 879 prev.pauseKeyDispatchingLocked(); 880 } else { 881 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 882 } 883 884 if (dontWait) { 885 // If the caller said they don't want to wait for the pause, then complete 886 // the pause now. 887 completePauseLocked(false); 888 return false; 889 890 } else { 891 // Schedule a pause timeout in case the app doesn't respond. 892 // We don't give it much time because this directly impacts the 893 // responsiveness seen by the user. 894 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 895 msg.obj = prev; 896 prev.pauseTime = SystemClock.uptimeMillis(); 897 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 898 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 899 return true; 900 } 901 902 } else { 903 // This activity failed to schedule the 904 // pause, so just treat it as being paused now. 905 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 906 if (!resuming) { 907 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 908 } 909 return false; 910 } 911 } 912 913 final void activityPausedLocked(IBinder token, boolean timeout) { 914 if (DEBUG_PAUSE) Slog.v( 915 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 916 917 final ActivityRecord r = isInStackLocked(token); 918 if (r != null) { 919 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 920 if (mPausingActivity == r) { 921 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 922 + (timeout ? " (due to timeout)" : " (pause complete)")); 923 completePauseLocked(true); 924 } else { 925 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 926 r.userId, System.identityHashCode(r), r.shortComponentName, 927 mPausingActivity != null 928 ? mPausingActivity.shortComponentName : "(none)"); 929 } 930 } 931 } 932 933 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, 934 PersistableBundle persistentState, CharSequence description) { 935 if (r.state != ActivityState.STOPPING) { 936 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 937 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 938 return; 939 } 940 if (persistentState != null) { 941 r.persistentState = persistentState; 942 mService.notifyTaskPersisterLocked(r.task, false); 943 } 944 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 945 if (icicle != null) { 946 // If icicle is null, this is happening due to a timeout, so we 947 // haven't really saved the state. 948 r.icicle = icicle; 949 r.haveState = true; 950 r.launchCount = 0; 951 r.updateThumbnail(null, description); 952 } 953 if (!r.stopped) { 954 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 955 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 956 r.stopped = true; 957 r.state = ActivityState.STOPPED; 958 if (mActivityContainer.mActivityDisplay.mVisibleBehindActivity == r) { 959 mStackSupervisor.requestVisibleBehindLocked(r, false); 960 } 961 if (r.finishing) { 962 r.clearOptionsLocked(); 963 } else { 964 if (r.configDestroy) { 965 destroyActivityLocked(r, true, "stop-config"); 966 mStackSupervisor.resumeTopActivitiesLocked(); 967 } else { 968 mStackSupervisor.updatePreviousProcessLocked(r); 969 } 970 } 971 } 972 } 973 974 private void completePauseLocked(boolean resumeNext) { 975 ActivityRecord prev = mPausingActivity; 976 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 977 978 if (prev != null) { 979 prev.state = ActivityState.PAUSED; 980 if (prev.finishing) { 981 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 982 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 983 } else if (prev.app != null) { 984 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 985 if (prev.waitingVisible) { 986 prev.waitingVisible = false; 987 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 988 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 989 TAG, "Complete pause, no longer waiting: " + prev); 990 } 991 if (prev.configDestroy) { 992 // The previous is being paused because the configuration 993 // is changing, which means it is actually stopping... 994 // To juggle the fact that we are also starting a new 995 // instance right now, we need to first completely stop 996 // the current instance before starting the new one. 997 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 998 destroyActivityLocked(prev, true, "pause-config"); 999 } else if (!hasVisibleBehindActivity()) { 1000 // If we were visible then resumeTopActivities will release resources before 1001 // stopping. 1002 mStackSupervisor.mStoppingActivities.add(prev); 1003 if (mStackSupervisor.mStoppingActivities.size() > 3 || 1004 prev.frontOfTask && mTaskHistory.size() <= 1) { 1005 // If we already have a few activities waiting to stop, 1006 // then give up on things going idle and start clearing 1007 // them out. Or if r is the last of activity of the last task the stack 1008 // will be empty and must be cleared immediately. 1009 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 1010 mStackSupervisor.scheduleIdleLocked(); 1011 } else { 1012 mStackSupervisor.checkReadyForSleepLocked(); 1013 } 1014 } 1015 } else { 1016 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 1017 prev = null; 1018 } 1019 mPausingActivity = null; 1020 } 1021 1022 if (resumeNext) { 1023 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 1024 if (!mService.isSleepingOrShuttingDown()) { 1025 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 1026 } else { 1027 mStackSupervisor.checkReadyForSleepLocked(); 1028 ActivityRecord top = topStack.topRunningActivityLocked(null); 1029 if (top == null || (prev != null && top != prev)) { 1030 // If there are no more activities available to run, 1031 // do resume anyway to start something. Also if the top 1032 // activity on the stack is not the just paused activity, 1033 // we need to go ahead and resume it to ensure we complete 1034 // an in-flight app switch. 1035 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 1036 } 1037 } 1038 } 1039 1040 if (prev != null) { 1041 prev.resumeKeyDispatchingLocked(); 1042 1043 if (prev.app != null && prev.cpuTimeAtResume > 0 1044 && mService.mBatteryStatsService.isOnBattery()) { 1045 long diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 1046 - prev.cpuTimeAtResume; 1047 if (diff > 0) { 1048 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 1049 synchronized (bsi) { 1050 BatteryStatsImpl.Uid.Proc ps = 1051 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 1052 prev.info.packageName); 1053 if (ps != null) { 1054 ps.addForegroundTimeLocked(diff); 1055 } 1056 } 1057 } 1058 } 1059 prev.cpuTimeAtResume = 0; // reset it 1060 } 1061 } 1062 1063 /** 1064 * Once we know that we have asked an application to put an activity in 1065 * the resumed state (either by launching it or explicitly telling it), 1066 * this function updates the rest of our state to match that fact. 1067 */ 1068 private void completeResumeLocked(ActivityRecord next) { 1069 next.idle = false; 1070 next.results = null; 1071 next.newIntents = null; 1072 1073 if (next.isHomeActivity() && next.isNotResolverActivity()) { 1074 ProcessRecord app = next.task.mActivities.get(0).app; 1075 if (app != null && app != mService.mHomeProcess) { 1076 mService.mHomeProcess = app; 1077 } 1078 } 1079 1080 if (next.nowVisible) { 1081 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1082 mStackSupervisor.notifyActivityDrawnForKeyguard(); 1083 } 1084 1085 // schedule an idle timeout in case the app doesn't do it for us. 1086 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1087 1088 mStackSupervisor.reportResumedActivityLocked(next); 1089 1090 next.resumeKeyDispatchingLocked(); 1091 mNoAnimActivities.clear(); 1092 1093 // Mark the point when the activity is resuming 1094 // TODO: To be more accurate, the mark should be before the onCreate, 1095 // not after the onResume. But for subsequent starts, onResume is fine. 1096 if (next.app != null) { 1097 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1098 } else { 1099 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1100 } 1101 1102 // If we are resuming the activity that we had last screenshotted, then we know it will be 1103 // updated, so invalidate the last screenshot to ensure we take a fresh one when requested 1104 if (next == mLastScreenshotActivity) { 1105 invalidateLastScreenshot(); 1106 } 1107 next.returningOptions = null; 1108 } 1109 1110 private void setVisibile(ActivityRecord r, boolean visible) { 1111 r.visible = visible; 1112 mWindowManager.setAppVisibility(r.appToken, visible); 1113 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1114 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1115 ActivityContainer container = containers.get(containerNdx); 1116 container.setVisible(visible); 1117 } 1118 } 1119 1120 // Find the first visible activity above the passed activity and if it is translucent return it 1121 // otherwise return null; 1122 ActivityRecord findNextTranslucentActivity(ActivityRecord r) { 1123 TaskRecord task = r.task; 1124 if (task == null) { 1125 return null; 1126 } 1127 1128 ActivityStack stack = task.stack; 1129 if (stack == null) { 1130 return null; 1131 } 1132 1133 int stackNdx = mStacks.indexOf(stack); 1134 1135 ArrayList<TaskRecord> tasks = stack.mTaskHistory; 1136 int taskNdx = tasks.indexOf(task); 1137 1138 ArrayList<ActivityRecord> activities = task.mActivities; 1139 int activityNdx = activities.indexOf(r) + 1; 1140 1141 final int numStacks = mStacks.size(); 1142 while (stackNdx < numStacks) { 1143 tasks = mStacks.get(stackNdx).mTaskHistory; 1144 final int numTasks = tasks.size(); 1145 while (taskNdx < numTasks) { 1146 activities = tasks.get(taskNdx).mActivities; 1147 final int numActivities = activities.size(); 1148 while (activityNdx < numActivities) { 1149 final ActivityRecord activity = activities.get(activityNdx); 1150 if (!activity.finishing) { 1151 return activity.fullscreen ? null : activity; 1152 } 1153 ++activityNdx; 1154 } 1155 activityNdx = 0; 1156 ++taskNdx; 1157 } 1158 taskNdx = 0; 1159 ++stackNdx; 1160 } 1161 1162 return null; 1163 } 1164 1165 // Checks if any of the stacks above this one has a fullscreen activity behind it. 1166 // If so, this stack is hidden, otherwise it is visible. 1167 private boolean isStackVisible() { 1168 if (!isAttached()) { 1169 return false; 1170 } 1171 1172 if (mStackSupervisor.isFrontStack(this)) { 1173 return true; 1174 } 1175 1176 /** 1177 * Start at the task above this one and go up, looking for a visible 1178 * fullscreen activity, or a translucent activity that requested the 1179 * wallpaper to be shown behind it. 1180 */ 1181 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) { 1182 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks(); 1183 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) { 1184 final TaskRecord task = tasks.get(taskNdx); 1185 final ArrayList<ActivityRecord> activities = task.mActivities; 1186 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) { 1187 final ActivityRecord r = activities.get(activityNdx); 1188 1189 // Conditions for an activity to obscure the stack we're 1190 // examining: 1191 // 1. Not Finishing AND Visible AND: 1192 // 2. Either: 1193 // - Full Screen Activity OR 1194 // - On top of Home and our stack is NOT home 1195 if (!r.finishing && r.visible && (r.fullscreen || 1196 (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()))) { 1197 return false; 1198 } 1199 } 1200 } 1201 } 1202 1203 return true; 1204 } 1205 1206 /** 1207 * Make sure that all activities that need to be visible (that is, they 1208 * currently can be seen by the user) actually are. 1209 */ 1210 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1211 ActivityRecord top = topRunningActivityLocked(null); 1212 if (top == null) { 1213 return; 1214 } 1215 if (DEBUG_VISBILITY) Slog.v( 1216 TAG, "ensureActivitiesVisible behind " + top 1217 + " configChanges=0x" + Integer.toHexString(configChanges)); 1218 1219 if (mTranslucentActivityWaiting != top) { 1220 mUndrawnActivitiesBelowTopTranslucent.clear(); 1221 if (mTranslucentActivityWaiting != null) { 1222 // Call the callback with a timeout indication. 1223 notifyActivityDrawnLocked(null); 1224 mTranslucentActivityWaiting = null; 1225 } 1226 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1227 } 1228 1229 // If the top activity is not fullscreen, then we need to 1230 // make sure any activities under it are now visible. 1231 boolean aboveTop = true; 1232 boolean behindFullscreen = !isStackVisible(); 1233 1234 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1235 final TaskRecord task = mTaskHistory.get(taskNdx); 1236 final ArrayList<ActivityRecord> activities = task.mActivities; 1237 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1238 final ActivityRecord r = activities.get(activityNdx); 1239 if (r.finishing) { 1240 continue; 1241 } 1242 if (aboveTop && r != top) { 1243 continue; 1244 } 1245 aboveTop = false; 1246 // mLaunchingBehind: Activities launching behind are at the back of the task stack 1247 // but must be drawn initially for the animation as though they were visible. 1248 if (!behindFullscreen || r.mLaunchTaskBehind) { 1249 if (DEBUG_VISBILITY) Slog.v( 1250 TAG, "Make visible? " + r + " finishing=" + r.finishing 1251 + " state=" + r.state); 1252 1253 // First: if this is not the current activity being started, make 1254 // sure it matches the current configuration. 1255 if (r != starting) { 1256 ensureActivityConfigurationLocked(r, 0); 1257 } 1258 1259 if (r.app == null || r.app.thread == null) { 1260 // This activity needs to be visible, but isn't even 1261 // running... get it started, but don't resume it 1262 // at this point. 1263 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1264 if (r != starting) { 1265 r.startFreezingScreenLocked(r.app, configChanges); 1266 } 1267 if (!r.visible || r.mLaunchTaskBehind) { 1268 if (DEBUG_VISBILITY) Slog.v( 1269 TAG, "Starting and making visible: " + r); 1270 setVisibile(r, true); 1271 } 1272 if (r != starting) { 1273 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1274 } 1275 1276 } else if (r.visible) { 1277 // If this activity is already visible, then there is nothing 1278 // else to do here. 1279 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1280 r.stopFreezingScreenLocked(false); 1281 try { 1282 if (r.returningOptions != null) { 1283 r.app.thread.scheduleOnNewActivityOptions(r.appToken, 1284 r.returningOptions); 1285 } 1286 } catch(RemoteException e) { 1287 } 1288 } else { 1289 // This activity is not currently visible, but is running. 1290 // Tell it to become visible. 1291 r.visible = true; 1292 if (r.state != ActivityState.RESUMED && r != starting) { 1293 // If this activity is paused, tell it 1294 // to now show its window. 1295 if (DEBUG_VISBILITY) Slog.v( 1296 TAG, "Making visible and scheduling visibility: " + r); 1297 try { 1298 if (mTranslucentActivityWaiting != null) { 1299 r.updateOptionsLocked(r.returningOptions); 1300 mUndrawnActivitiesBelowTopTranslucent.add(r); 1301 } 1302 setVisibile(r, true); 1303 r.sleeping = false; 1304 r.app.pendingUiClean = true; 1305 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1306 r.stopFreezingScreenLocked(false); 1307 } catch (Exception e) { 1308 // Just skip on any failure; we'll make it 1309 // visible when it next restarts. 1310 Slog.w(TAG, "Exception thrown making visibile: " 1311 + r.intent.getComponent(), e); 1312 } 1313 } 1314 } 1315 1316 // Aggregate current change flags. 1317 configChanges |= r.configChangeFlags; 1318 1319 if (r.fullscreen) { 1320 // At this point, nothing else needs to be shown 1321 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1322 behindFullscreen = true; 1323 } else if (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()) { 1324 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1325 behindFullscreen = true; 1326 } 1327 } else { 1328 if (DEBUG_VISBILITY) Slog.v( 1329 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1330 + " state=" + r.state 1331 + " behindFullscreen=" + behindFullscreen); 1332 // Now for any activities that aren't visible to the user, make 1333 // sure they no longer are keeping the screen frozen. 1334 if (r.visible) { 1335 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1336 try { 1337 setVisibile(r, false); 1338 switch (r.state) { 1339 case STOPPING: 1340 case STOPPED: 1341 if (r.app != null && r.app.thread != null) { 1342 if (DEBUG_VISBILITY) Slog.v( 1343 TAG, "Scheduling invisibility: " + r); 1344 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1345 } 1346 break; 1347 1348 case INITIALIZING: 1349 case RESUMED: 1350 case PAUSING: 1351 case PAUSED: 1352 // This case created for transitioning activities from 1353 // translucent to opaque {@link Activity#convertToOpaque}. 1354 if (getVisibleBehindActivity() == r) { 1355 releaseBackgroundResources(); 1356 } else { 1357 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1358 mStackSupervisor.mStoppingActivities.add(r); 1359 } 1360 mStackSupervisor.scheduleIdleLocked(); 1361 } 1362 break; 1363 1364 default: 1365 break; 1366 } 1367 } catch (Exception e) { 1368 // Just skip on any failure; we'll make it 1369 // visible when it next restarts. 1370 Slog.w(TAG, "Exception thrown making hidden: " 1371 + r.intent.getComponent(), e); 1372 } 1373 } else { 1374 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1375 } 1376 } 1377 } 1378 } 1379 1380 if (mTranslucentActivityWaiting != null && 1381 mUndrawnActivitiesBelowTopTranslucent.isEmpty()) { 1382 // Nothing is getting drawn or everything was already visible, don't wait for timeout. 1383 notifyActivityDrawnLocked(null); 1384 } 1385 } 1386 1387 void convertToTranslucent(ActivityRecord r) { 1388 mTranslucentActivityWaiting = r; 1389 mUndrawnActivitiesBelowTopTranslucent.clear(); 1390 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1391 } 1392 1393 /** 1394 * Called as activities below the top translucent activity are redrawn. When the last one is 1395 * redrawn notify the top activity by calling 1396 * {@link Activity#onTranslucentConversionComplete}. 1397 * 1398 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1399 * occurred and the activity will be notified immediately. 1400 */ 1401 void notifyActivityDrawnLocked(ActivityRecord r) { 1402 mActivityContainer.setDrawn(); 1403 if ((r == null) 1404 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1405 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1406 // The last undrawn activity below the top has just been drawn. If there is an 1407 // opaque activity at the top, notify it that it can become translucent safely now. 1408 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1409 mTranslucentActivityWaiting = null; 1410 mUndrawnActivitiesBelowTopTranslucent.clear(); 1411 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1412 1413 if (waitingActivity != null) { 1414 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1415 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1416 try { 1417 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1418 waitingActivity.appToken, r != null); 1419 } catch (RemoteException e) { 1420 } 1421 } 1422 } 1423 } 1424 } 1425 1426 /** If any activities below the top running one are in the INITIALIZING state and they have a 1427 * starting window displayed then remove that starting window. It is possible that the activity 1428 * in this state will never resumed in which case that starting window will be orphaned. */ 1429 void cancelInitializingActivities() { 1430 final ActivityRecord topActivity = topRunningActivityLocked(null); 1431 boolean aboveTop = true; 1432 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1433 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1434 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1435 final ActivityRecord r = activities.get(activityNdx); 1436 if (aboveTop) { 1437 if (r == topActivity) { 1438 aboveTop = false; 1439 } 1440 continue; 1441 } 1442 1443 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1444 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1445 r.mStartingWindowShown = false; 1446 mWindowManager.removeAppStartingWindow(r.appToken); 1447 } 1448 } 1449 } 1450 } 1451 1452 /** 1453 * Ensure that the top activity in the stack is resumed. 1454 * 1455 * @param prev The previously resumed activity, for when in the process 1456 * of pausing; can be null to call from elsewhere. 1457 * 1458 * @return Returns true if something is being resumed, or false if 1459 * nothing happened. 1460 */ 1461 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1462 return resumeTopActivityLocked(prev, null); 1463 } 1464 1465 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1466 if (inResumeTopActivity) { 1467 // Don't even start recursing. 1468 return false; 1469 } 1470 1471 boolean result = false; 1472 try { 1473 // Protect against recursion. 1474 inResumeTopActivity = true; 1475 result = resumeTopActivityInnerLocked(prev, options); 1476 } finally { 1477 inResumeTopActivity = false; 1478 } 1479 return result; 1480 } 1481 1482 final boolean resumeTopActivityInnerLocked(ActivityRecord prev, Bundle options) { 1483 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1484 1485 if (!mService.mBooting && !mService.mBooted) { 1486 // Not ready yet! 1487 return false; 1488 } 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 && srec.task.getBaseIntent() != null 2865 && srec.task.getBaseIntent().isDocument()) { 2866 // Okay, this activity is at the root of its task. What to do, what to do... 2867 if (srec.task.getTaskToReturnTo() != ActivityRecord.APPLICATION_ACTIVITY_TYPE) { 2868 // Finishing won't return to an application, so we need to recreate. 2869 return true; 2870 } 2871 // We now need to get the task below it to determine what to do. 2872 int taskIdx = mTaskHistory.indexOf(srec.task); 2873 if (taskIdx <= 0) { 2874 Slog.w(TAG, "shouldUpRecreateTask: task not in history for " + srec); 2875 return false; 2876 } 2877 if (taskIdx == 0) { 2878 // At the bottom of the stack, nothing to go back to. 2879 return true; 2880 } 2881 TaskRecord prevTask = mTaskHistory.get(taskIdx); 2882 if (!srec.task.affinity.equals(prevTask.affinity)) { 2883 // These are different apps, so need to recreate. 2884 return true; 2885 } 2886 } 2887 return false; 2888 } 2889 2890 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2891 Intent resultData) { 2892 final ActivityRecord srec = ActivityRecord.forToken(token); 2893 final TaskRecord task = srec.task; 2894 final ArrayList<ActivityRecord> activities = task.mActivities; 2895 final int start = activities.indexOf(srec); 2896 if (!mTaskHistory.contains(task) || (start < 0)) { 2897 return false; 2898 } 2899 int finishTo = start - 1; 2900 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2901 boolean foundParentInTask = false; 2902 final ComponentName dest = destIntent.getComponent(); 2903 if (start > 0 && dest != null) { 2904 for (int i = finishTo; i >= 0; i--) { 2905 ActivityRecord r = activities.get(i); 2906 if (r.info.packageName.equals(dest.getPackageName()) && 2907 r.info.name.equals(dest.getClassName())) { 2908 finishTo = i; 2909 parent = r; 2910 foundParentInTask = true; 2911 break; 2912 } 2913 } 2914 } 2915 2916 IActivityController controller = mService.mController; 2917 if (controller != null) { 2918 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2919 if (next != null) { 2920 // ask watcher if this is allowed 2921 boolean resumeOK = true; 2922 try { 2923 resumeOK = controller.activityResuming(next.packageName); 2924 } catch (RemoteException e) { 2925 mService.mController = null; 2926 Watchdog.getInstance().setActivityController(null); 2927 } 2928 2929 if (!resumeOK) { 2930 return false; 2931 } 2932 } 2933 } 2934 final long origId = Binder.clearCallingIdentity(); 2935 for (int i = start; i > finishTo; i--) { 2936 ActivityRecord r = activities.get(i); 2937 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2938 // Only return the supplied result for the first activity finished 2939 resultCode = Activity.RESULT_CANCELED; 2940 resultData = null; 2941 } 2942 2943 if (parent != null && foundParentInTask) { 2944 final int parentLaunchMode = parent.info.launchMode; 2945 final int destIntentFlags = destIntent.getFlags(); 2946 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2947 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2948 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2949 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2950 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2951 } else { 2952 try { 2953 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2954 destIntent.getComponent(), 0, srec.userId); 2955 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2956 null, aInfo, null, null, parent.appToken, null, 2957 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2958 -1, parent.launchedFromUid, 0, null, true, null, null, null); 2959 foundParentInTask = res == ActivityManager.START_SUCCESS; 2960 } catch (RemoteException e) { 2961 foundParentInTask = false; 2962 } 2963 requestFinishActivityLocked(parent.appToken, resultCode, 2964 resultData, "navigate-up", true); 2965 } 2966 } 2967 Binder.restoreCallingIdentity(origId); 2968 return foundParentInTask; 2969 } 2970 /** 2971 * Perform the common clean-up of an activity record. This is called both 2972 * as part of destroyActivityLocked() (when destroying the client-side 2973 * representation) and cleaning things up as a result of its hosting 2974 * processing going away, in which case there is no remaining client-side 2975 * state to destroy so only the cleanup here is needed. 2976 */ 2977 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2978 boolean setState) { 2979 if (mResumedActivity == r) { 2980 mResumedActivity = null; 2981 } 2982 if (mPausingActivity == r) { 2983 mPausingActivity = null; 2984 } 2985 mService.clearFocusedActivity(r); 2986 2987 r.configDestroy = false; 2988 r.frozenBeforeDestroy = false; 2989 2990 if (setState) { 2991 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2992 r.state = ActivityState.DESTROYED; 2993 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2994 r.app = null; 2995 } 2996 2997 // Make sure this record is no longer in the pending finishes list. 2998 // This could happen, for example, if we are trimming activities 2999 // down to the max limit while they are still waiting to finish. 3000 mStackSupervisor.mFinishingActivities.remove(r); 3001 mStackSupervisor.mWaitingVisibleActivities.remove(r); 3002 3003 // Remove any pending results. 3004 if (r.finishing && r.pendingResults != null) { 3005 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 3006 PendingIntentRecord rec = apr.get(); 3007 if (rec != null) { 3008 mService.cancelIntentSenderLocked(rec, false); 3009 } 3010 } 3011 r.pendingResults = null; 3012 } 3013 3014 if (cleanServices) { 3015 cleanUpActivityServicesLocked(r); 3016 } 3017 3018 // Get rid of any pending idle timeouts. 3019 removeTimeoutsForActivityLocked(r); 3020 if (getVisibleBehindActivity() == r) { 3021 mStackSupervisor.requestVisibleBehindLocked(r, false); 3022 } 3023 } 3024 3025 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 3026 mStackSupervisor.removeTimeoutsForActivityLocked(r); 3027 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3028 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 3029 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3030 r.finishLaunchTickingLocked(); 3031 } 3032 3033 private void removeActivityFromHistoryLocked(ActivityRecord r) { 3034 mStackSupervisor.removeChildActivityContainers(r); 3035 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 3036 r.makeFinishing(); 3037 if (DEBUG_ADD_REMOVE) { 3038 RuntimeException here = new RuntimeException("here"); 3039 here.fillInStackTrace(); 3040 Slog.i(TAG, "Removing activity " + r + " from stack"); 3041 } 3042 r.takeFromHistory(); 3043 removeTimeoutsForActivityLocked(r); 3044 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 3045 r.state = ActivityState.DESTROYED; 3046 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 3047 r.app = null; 3048 mWindowManager.removeAppToken(r.appToken); 3049 if (VALIDATE_TOKENS) { 3050 validateAppTokensLocked(); 3051 } 3052 final TaskRecord task = r.task; 3053 if (task != null && task.removeActivity(r)) { 3054 if (DEBUG_STACK) Slog.i(TAG, 3055 "removeActivityFromHistoryLocked: last activity removed from " + this); 3056 if (mStackSupervisor.isFrontStack(this) && task == topTask() && 3057 task.isOverHomeStack()) { 3058 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 3059 } 3060 removeTask(task); 3061 } 3062 cleanUpActivityServicesLocked(r); 3063 r.removeUriPermissionsLocked(); 3064 } 3065 3066 /** 3067 * Perform clean-up of service connections in an activity record. 3068 */ 3069 final void cleanUpActivityServicesLocked(ActivityRecord r) { 3070 // Throw away any services that have been bound by this activity. 3071 if (r.connections != null) { 3072 Iterator<ConnectionRecord> it = r.connections.iterator(); 3073 while (it.hasNext()) { 3074 ConnectionRecord c = it.next(); 3075 mService.mServices.removeConnectionLocked(c, null, r); 3076 } 3077 r.connections = null; 3078 } 3079 } 3080 3081 final void scheduleDestroyActivities(ProcessRecord owner, String reason) { 3082 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 3083 msg.obj = new ScheduleDestroyArgs(owner, reason); 3084 mHandler.sendMessage(msg); 3085 } 3086 3087 final void destroyActivitiesLocked(ProcessRecord owner, String reason) { 3088 boolean lastIsOpaque = false; 3089 boolean activityRemoved = false; 3090 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3091 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3092 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3093 final ActivityRecord r = activities.get(activityNdx); 3094 if (r.finishing) { 3095 continue; 3096 } 3097 if (r.fullscreen) { 3098 lastIsOpaque = true; 3099 } 3100 if (owner != null && r.app != owner) { 3101 continue; 3102 } 3103 if (!lastIsOpaque) { 3104 continue; 3105 } 3106 if (r.isDestroyable()) { 3107 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 3108 + " resumed=" + mResumedActivity 3109 + " pausing=" + mPausingActivity + " for reason " + reason); 3110 if (destroyActivityLocked(r, true, reason)) { 3111 activityRemoved = true; 3112 } 3113 } 3114 } 3115 } 3116 if (activityRemoved) { 3117 mStackSupervisor.resumeTopActivitiesLocked(); 3118 } 3119 } 3120 3121 final boolean safelyDestroyActivityLocked(ActivityRecord r, String reason) { 3122 if (r.isDestroyable()) { 3123 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 3124 + " resumed=" + mResumedActivity 3125 + " pausing=" + mPausingActivity + " for reason " + reason); 3126 return destroyActivityLocked(r, true, reason); 3127 } 3128 return false; 3129 } 3130 3131 final int releaseSomeActivitiesLocked(ProcessRecord app, ArraySet<TaskRecord> tasks, 3132 String reason) { 3133 // Iterate over tasks starting at the back (oldest) first. 3134 if (DEBUG_RELEASE) Slog.d(TAG, "Trying to release some activities in " + app); 3135 int maxTasks = tasks.size() / 4; 3136 if (maxTasks < 1) { 3137 maxTasks = 1; 3138 } 3139 int numReleased = 0; 3140 for (int taskNdx = 0; taskNdx < mTaskHistory.size() && maxTasks > 0; taskNdx++) { 3141 final TaskRecord task = mTaskHistory.get(taskNdx); 3142 if (!tasks.contains(task)) { 3143 continue; 3144 } 3145 if (DEBUG_RELEASE) Slog.d(TAG, "Looking for activities to release in " + task); 3146 int curNum = 0; 3147 final ArrayList<ActivityRecord> activities = task.mActivities; 3148 for (int actNdx = 0; actNdx < activities.size(); actNdx++) { 3149 final ActivityRecord activity = activities.get(actNdx); 3150 if (activity.app == app && activity.isDestroyable()) { 3151 if (DEBUG_RELEASE) Slog.v(TAG, "Destroying " + activity 3152 + " in state " + activity.state + " resumed=" + mResumedActivity 3153 + " pausing=" + mPausingActivity + " for reason " + reason); 3154 destroyActivityLocked(activity, true, reason); 3155 if (activities.get(actNdx) != activity) { 3156 // Was removed from list, back up so we don't miss the next one. 3157 actNdx--; 3158 } 3159 curNum++; 3160 } 3161 } 3162 if (curNum > 0) { 3163 numReleased += curNum; 3164 maxTasks--; 3165 if (mTaskHistory.get(taskNdx) != task) { 3166 // The entire task got removed, back up so we don't miss the next one. 3167 taskNdx--; 3168 } 3169 } 3170 } 3171 if (DEBUG_RELEASE) Slog.d(TAG, "Done releasing: did " + numReleased + " activities"); 3172 return numReleased; 3173 } 3174 3175 /** 3176 * Destroy the current CLIENT SIDE instance of an activity. This may be 3177 * called both when actually finishing an activity, or when performing 3178 * a configuration switch where we destroy the current client-side object 3179 * but then create a new client-side object for this same HistoryRecord. 3180 */ 3181 final boolean destroyActivityLocked(ActivityRecord r, boolean removeFromApp, String reason) { 3182 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 3183 TAG, "Removing activity from " + reason + ": token=" + r 3184 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 3185 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 3186 r.userId, System.identityHashCode(r), 3187 r.task.taskId, r.shortComponentName, reason); 3188 3189 boolean removedFromHistory = false; 3190 3191 cleanUpActivityLocked(r, false, false); 3192 3193 final boolean hadApp = r.app != null; 3194 3195 if (hadApp) { 3196 if (removeFromApp) { 3197 r.app.activities.remove(r); 3198 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 3199 mService.mHeavyWeightProcess = null; 3200 mService.mHandler.sendEmptyMessage( 3201 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 3202 } 3203 if (r.app.activities.isEmpty()) { 3204 // Update any services we are bound to that might care about whether 3205 // their client may have activities. 3206 mService.mServices.updateServiceConnectionActivitiesLocked(r.app); 3207 // No longer have activities, so update LRU list and oom adj. 3208 mService.updateLruProcessLocked(r.app, false, null); 3209 mService.updateOomAdjLocked(); 3210 } 3211 } 3212 3213 boolean skipDestroy = false; 3214 3215 try { 3216 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 3217 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 3218 r.configChangeFlags); 3219 } catch (Exception e) { 3220 // We can just ignore exceptions here... if the process 3221 // has crashed, our death notification will clean things 3222 // up. 3223 //Slog.w(TAG, "Exception thrown during finish", e); 3224 if (r.finishing) { 3225 removeActivityFromHistoryLocked(r); 3226 removedFromHistory = true; 3227 skipDestroy = true; 3228 } 3229 } 3230 3231 r.nowVisible = false; 3232 3233 // If the activity is finishing, we need to wait on removing it 3234 // from the list to give it a chance to do its cleanup. During 3235 // that time it may make calls back with its token so we need to 3236 // be able to find it on the list and so we don't want to remove 3237 // it from the list yet. Otherwise, we can just immediately put 3238 // it in the destroyed state since we are not removing it from the 3239 // list. 3240 if (r.finishing && !skipDestroy) { 3241 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 3242 + " (destroy requested)"); 3243 r.state = ActivityState.DESTROYING; 3244 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 3245 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 3246 } else { 3247 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 3248 r.state = ActivityState.DESTROYED; 3249 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3250 r.app = null; 3251 } 3252 } else { 3253 // remove this record from the history. 3254 if (r.finishing) { 3255 removeActivityFromHistoryLocked(r); 3256 removedFromHistory = true; 3257 } else { 3258 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 3259 r.state = ActivityState.DESTROYED; 3260 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3261 r.app = null; 3262 } 3263 } 3264 3265 r.configChangeFlags = 0; 3266 3267 if (!mLRUActivities.remove(r) && hadApp) { 3268 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 3269 } 3270 3271 return removedFromHistory; 3272 } 3273 3274 final void activityDestroyedLocked(IBinder token) { 3275 final long origId = Binder.clearCallingIdentity(); 3276 try { 3277 ActivityRecord r = ActivityRecord.forToken(token); 3278 if (r != null) { 3279 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3280 } 3281 if (DEBUG_CONTAINERS) Slog.d(TAG, "activityDestroyedLocked: r=" + r); 3282 3283 if (isInStackLocked(token) != null) { 3284 if (r.state == ActivityState.DESTROYING) { 3285 cleanUpActivityLocked(r, true, false); 3286 removeActivityFromHistoryLocked(r); 3287 } 3288 } 3289 mStackSupervisor.resumeTopActivitiesLocked(); 3290 } finally { 3291 Binder.restoreCallingIdentity(origId); 3292 } 3293 } 3294 3295 void releaseBackgroundResources() { 3296 if (hasVisibleBehindActivity() && 3297 !mHandler.hasMessages(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG)) { 3298 final ActivityRecord r = getVisibleBehindActivity(); 3299 if (DEBUG_STATES) Slog.d(TAG, "releaseBackgroundResources activtyDisplay=" + 3300 mActivityContainer.mActivityDisplay + " visibleBehind=" + r + " app=" + r.app + 3301 " thread=" + r.app.thread); 3302 if (r != null && r.app != null && r.app.thread != null) { 3303 try { 3304 r.app.thread.scheduleCancelVisibleBehind(r.appToken); 3305 } catch (RemoteException e) { 3306 } 3307 mHandler.sendEmptyMessageDelayed(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG, 500); 3308 } else { 3309 Slog.e(TAG, "releaseBackgroundResources: activity " + r + " no longer running"); 3310 backgroundResourcesReleased(r.appToken); 3311 } 3312 } 3313 } 3314 3315 final void backgroundResourcesReleased(IBinder token) { 3316 mHandler.removeMessages(RELEASE_BACKGROUND_RESOURCES_TIMEOUT_MSG); 3317 final ActivityRecord r = getVisibleBehindActivity(); 3318 if (r != null) { 3319 mStackSupervisor.mStoppingActivities.add(r); 3320 setVisibleBehindActivity(null); 3321 } 3322 mStackSupervisor.resumeTopActivitiesLocked(); 3323 } 3324 3325 boolean hasVisibleBehindActivity() { 3326 return isAttached() && mActivityContainer.mActivityDisplay.hasVisibleBehindActivity(); 3327 } 3328 3329 void setVisibleBehindActivity(ActivityRecord r) { 3330 if (isAttached()) { 3331 mActivityContainer.mActivityDisplay.setVisibleBehindActivity(r); 3332 } 3333 } 3334 3335 ActivityRecord getVisibleBehindActivity() { 3336 return isAttached() ? mActivityContainer.mActivityDisplay.mVisibleBehindActivity : null; 3337 } 3338 3339 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3340 ProcessRecord app, String listName) { 3341 int i = list.size(); 3342 if (DEBUG_CLEANUP) Slog.v( 3343 TAG, "Removing app " + app + " from list " + listName 3344 + " with " + i + " entries"); 3345 while (i > 0) { 3346 i--; 3347 ActivityRecord r = list.get(i); 3348 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3349 if (r.app == app) { 3350 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3351 list.remove(i); 3352 removeTimeoutsForActivityLocked(r); 3353 } 3354 } 3355 } 3356 3357 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3358 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3359 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3360 "mStoppingActivities"); 3361 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3362 "mGoingToSleepActivities"); 3363 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3364 "mWaitingVisibleActivities"); 3365 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3366 "mFinishingActivities"); 3367 3368 boolean hasVisibleActivities = false; 3369 3370 // Clean out the history list. 3371 int i = numActivities(); 3372 if (DEBUG_CLEANUP) Slog.v( 3373 TAG, "Removing app " + app + " from history with " + i + " entries"); 3374 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3375 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3376 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3377 final ActivityRecord r = activities.get(activityNdx); 3378 --i; 3379 if (DEBUG_CLEANUP) Slog.v( 3380 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3381 if (r.app == app) { 3382 boolean remove; 3383 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3384 // Don't currently have state for the activity, or 3385 // it is finishing -- always remove it. 3386 remove = true; 3387 } else if (r.launchCount > 2 && 3388 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3389 // We have launched this activity too many times since it was 3390 // able to run, so give up and remove it. 3391 remove = true; 3392 } else { 3393 // The process may be gone, but the activity lives on! 3394 remove = false; 3395 } 3396 if (remove) { 3397 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3398 RuntimeException here = new RuntimeException("here"); 3399 here.fillInStackTrace(); 3400 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3401 + ": haveState=" + r.haveState 3402 + " stateNotNeeded=" + r.stateNotNeeded 3403 + " finishing=" + r.finishing 3404 + " state=" + r.state, here); 3405 } 3406 if (!r.finishing) { 3407 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3408 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3409 r.userId, System.identityHashCode(r), 3410 r.task.taskId, r.shortComponentName, 3411 "proc died without state saved"); 3412 if (r.state == ActivityState.RESUMED) { 3413 mService.updateUsageStats(r, false); 3414 } 3415 } 3416 removeActivityFromHistoryLocked(r); 3417 3418 } else { 3419 // We have the current state for this activity, so 3420 // it can be restarted later when needed. 3421 if (localLOGV) Slog.v( 3422 TAG, "Keeping entry, setting app to null"); 3423 if (r.visible) { 3424 hasVisibleActivities = true; 3425 } 3426 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3427 + r); 3428 r.app = null; 3429 r.nowVisible = false; 3430 if (!r.haveState) { 3431 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3432 "App died, clearing saved state of " + r); 3433 r.icicle = null; 3434 } 3435 } 3436 3437 cleanUpActivityLocked(r, true, true); 3438 } 3439 } 3440 } 3441 3442 return hasVisibleActivities; 3443 } 3444 3445 final void updateTransitLocked(int transit, Bundle options) { 3446 if (options != null) { 3447 ActivityRecord r = topRunningActivityLocked(null); 3448 if (r != null && r.state != ActivityState.RESUMED) { 3449 r.updateOptionsLocked(options); 3450 } else { 3451 ActivityOptions.abort(options); 3452 } 3453 } 3454 mWindowManager.prepareAppTransition(transit, false); 3455 } 3456 3457 void updateTaskMovement(TaskRecord task, boolean toFront) { 3458 if (task.isPersistable) { 3459 task.mLastTimeMoved = System.currentTimeMillis(); 3460 // Sign is used to keep tasks sorted when persisted. Tasks sent to the bottom most 3461 // recently will be most negative, tasks sent to the bottom before that will be less 3462 // negative. Similarly for recent tasks moved to the top which will be most positive. 3463 if (!toFront) { 3464 task.mLastTimeMoved *= -1; 3465 } 3466 } 3467 } 3468 3469 void moveHomeStackTaskToTop(int homeStackTaskType) { 3470 final int top = mTaskHistory.size() - 1; 3471 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3472 final TaskRecord task = mTaskHistory.get(taskNdx); 3473 if (task.taskType == homeStackTaskType) { 3474 if (DEBUG_TASKS || DEBUG_STACK) 3475 Slog.d(TAG, "moveHomeStackTaskToTop: moving " + task); 3476 mTaskHistory.remove(taskNdx); 3477 mTaskHistory.add(top, task); 3478 updateTaskMovement(task, true); 3479 mWindowManager.moveTaskToTop(task.taskId); 3480 return; 3481 } 3482 } 3483 } 3484 3485 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3486 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3487 3488 final int numTasks = mTaskHistory.size(); 3489 final int index = mTaskHistory.indexOf(tr); 3490 if (numTasks == 0 || index < 0) { 3491 // nothing to do! 3492 if (reason != null && 3493 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3494 ActivityOptions.abort(options); 3495 } else { 3496 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3497 } 3498 return; 3499 } 3500 3501 moveToFront(); 3502 3503 // Shift all activities with this task up to the top 3504 // of the stack, keeping them in the same internal order. 3505 insertTaskAtTop(tr); 3506 3507 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3508 if (reason != null && 3509 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3510 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3511 ActivityRecord r = topRunningActivityLocked(null); 3512 if (r != null) { 3513 mNoAnimActivities.add(r); 3514 } 3515 ActivityOptions.abort(options); 3516 } else { 3517 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3518 } 3519 3520 mWindowManager.moveTaskToTop(tr.taskId); 3521 3522 mStackSupervisor.resumeTopActivitiesLocked(); 3523 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3524 3525 if (VALIDATE_TOKENS) { 3526 validateAppTokensLocked(); 3527 } 3528 } 3529 3530 /** 3531 * Worker method for rearranging history stack. Implements the function of moving all 3532 * activities for a specific task (gathering them if disjoint) into a single group at the 3533 * bottom of the stack. 3534 * 3535 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3536 * to premeptively cancel the move. 3537 * 3538 * @param taskId The taskId to collect and move to the bottom. 3539 * @return Returns true if the move completed, false if not. 3540 */ 3541 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3542 final TaskRecord tr = taskForIdLocked(taskId); 3543 if (tr == null) { 3544 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3545 return false; 3546 } 3547 3548 Slog.i(TAG, "moveTaskToBack: " + tr); 3549 3550 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3551 3552 // If we have a watcher, preflight the move before committing to it. First check 3553 // for *other* available tasks, but if none are available, then try again allowing the 3554 // current task to be selected. 3555 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3556 ActivityRecord next = topRunningActivityLocked(null, taskId); 3557 if (next == null) { 3558 next = topRunningActivityLocked(null, 0); 3559 } 3560 if (next != null) { 3561 // ask watcher if this is allowed 3562 boolean moveOK = true; 3563 try { 3564 moveOK = mService.mController.activityResuming(next.packageName); 3565 } catch (RemoteException e) { 3566 mService.mController = null; 3567 Watchdog.getInstance().setActivityController(null); 3568 } 3569 if (!moveOK) { 3570 return false; 3571 } 3572 } 3573 } 3574 3575 if (DEBUG_TRANSITION) Slog.v(TAG, 3576 "Prepare to back transition: task=" + taskId); 3577 3578 mTaskHistory.remove(tr); 3579 mTaskHistory.add(0, tr); 3580 updateTaskMovement(tr, false); 3581 3582 // There is an assumption that moving a task to the back moves it behind the home activity. 3583 // We make sure here that some activity in the stack will launch home. 3584 int numTasks = mTaskHistory.size(); 3585 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3586 final TaskRecord task = mTaskHistory.get(taskNdx); 3587 if (task.isOverHomeStack()) { 3588 break; 3589 } 3590 if (taskNdx == 1) { 3591 // Set the last task before tr to go to home. 3592 task.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3593 } 3594 } 3595 3596 if (reason != null && 3597 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3598 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3599 ActivityRecord r = topRunningActivityLocked(null); 3600 if (r != null) { 3601 mNoAnimActivities.add(r); 3602 } 3603 } else { 3604 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3605 } 3606 mWindowManager.moveTaskToBottom(taskId); 3607 3608 if (VALIDATE_TOKENS) { 3609 validateAppTokensLocked(); 3610 } 3611 3612 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3613 if (task == tr && tr.isOverHomeStack() || numTasks <= 1 && isOnHomeDisplay()) { 3614 if (!mService.mBooting && !mService.mBooted) { 3615 // Not ready yet! 3616 return false; 3617 } 3618 final int taskToReturnTo = tr.getTaskToReturnTo(); 3619 tr.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 3620 return mStackSupervisor.resumeHomeStackTask(taskToReturnTo, null); 3621 } 3622 3623 mStackSupervisor.resumeTopActivitiesLocked(); 3624 return true; 3625 } 3626 3627 static final void logStartActivity(int tag, ActivityRecord r, 3628 TaskRecord task) { 3629 final Uri data = r.intent.getData(); 3630 final String strData = data != null ? data.toSafeString() : null; 3631 3632 EventLog.writeEvent(tag, 3633 r.userId, System.identityHashCode(r), task.taskId, 3634 r.shortComponentName, r.intent.getAction(), 3635 r.intent.getType(), strData, r.intent.getFlags()); 3636 } 3637 3638 /** 3639 * Make sure the given activity matches the current configuration. Returns 3640 * false if the activity had to be destroyed. Returns true if the 3641 * configuration is the same, or the activity will remain running as-is 3642 * for whatever reason. Ensures the HistoryRecord is updated with the 3643 * correct configuration and all other bookkeeping is handled. 3644 */ 3645 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3646 int globalChanges) { 3647 if (mConfigWillChange) { 3648 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3649 "Skipping config check (will change): " + r); 3650 return true; 3651 } 3652 3653 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3654 "Ensuring correct configuration: " + r); 3655 3656 // Short circuit: if the two configurations are the exact same 3657 // object (the common case), then there is nothing to do. 3658 Configuration newConfig = mService.mConfiguration; 3659 if (r.configuration == newConfig && !r.forceNewConfig) { 3660 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3661 "Configuration unchanged in " + r); 3662 return true; 3663 } 3664 3665 // We don't worry about activities that are finishing. 3666 if (r.finishing) { 3667 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3668 "Configuration doesn't matter in finishing " + r); 3669 r.stopFreezingScreenLocked(false); 3670 return true; 3671 } 3672 3673 // Okay we now are going to make this activity have the new config. 3674 // But then we need to figure out how it needs to deal with that. 3675 Configuration oldConfig = r.configuration; 3676 r.configuration = newConfig; 3677 3678 // Determine what has changed. May be nothing, if this is a config 3679 // that has come back from the app after going idle. In that case 3680 // we just want to leave the official config object now in the 3681 // activity and do nothing else. 3682 final int changes = oldConfig.diff(newConfig); 3683 if (changes == 0 && !r.forceNewConfig) { 3684 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3685 "Configuration no differences in " + r); 3686 return true; 3687 } 3688 3689 // If the activity isn't currently running, just leave the new 3690 // configuration and it will pick that up next time it starts. 3691 if (r.app == null || r.app.thread == null) { 3692 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3693 "Configuration doesn't matter not running " + r); 3694 r.stopFreezingScreenLocked(false); 3695 r.forceNewConfig = false; 3696 return true; 3697 } 3698 3699 // Figure out how to handle the changes between the configurations. 3700 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3701 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3702 + Integer.toHexString(changes) + ", handles=0x" 3703 + Integer.toHexString(r.info.getRealConfigChanged()) 3704 + ", newConfig=" + newConfig); 3705 } 3706 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3707 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3708 r.configChangeFlags |= changes; 3709 r.startFreezingScreenLocked(r.app, globalChanges); 3710 r.forceNewConfig = false; 3711 if (r.app == null || r.app.thread == null) { 3712 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3713 "Config is destroying non-running " + r); 3714 destroyActivityLocked(r, true, "config"); 3715 } else if (r.state == ActivityState.PAUSING) { 3716 // A little annoying: we are waiting for this activity to 3717 // finish pausing. Let's not do anything now, but just 3718 // flag that it needs to be restarted when done pausing. 3719 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3720 "Config is skipping already pausing " + r); 3721 r.configDestroy = true; 3722 return true; 3723 } else if (r.state == ActivityState.RESUMED) { 3724 // Try to optimize this case: the configuration is changing 3725 // and we need to restart the top, resumed activity. 3726 // Instead of doing the normal handshaking, just say 3727 // "restart!". 3728 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3729 "Config is relaunching resumed " + r); 3730 relaunchActivityLocked(r, r.configChangeFlags, true); 3731 r.configChangeFlags = 0; 3732 } else { 3733 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3734 "Config is relaunching non-resumed " + r); 3735 relaunchActivityLocked(r, r.configChangeFlags, false); 3736 r.configChangeFlags = 0; 3737 } 3738 3739 // All done... tell the caller we weren't able to keep this 3740 // activity around. 3741 return false; 3742 } 3743 3744 // Default case: the activity can handle this new configuration, so 3745 // hand it over. Note that we don't need to give it the new 3746 // configuration, since we always send configuration changes to all 3747 // process when they happen so it can just use whatever configuration 3748 // it last got. 3749 if (r.app != null && r.app.thread != null) { 3750 try { 3751 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3752 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3753 } catch (RemoteException e) { 3754 // If process died, whatever. 3755 } 3756 } 3757 r.stopFreezingScreenLocked(false); 3758 3759 return true; 3760 } 3761 3762 private boolean relaunchActivityLocked(ActivityRecord r, 3763 int changes, boolean andResume) { 3764 List<ResultInfo> results = null; 3765 List<Intent> newIntents = null; 3766 if (andResume) { 3767 results = r.results; 3768 newIntents = r.newIntents; 3769 } 3770 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3771 + " with results=" + results + " newIntents=" + newIntents 3772 + " andResume=" + andResume); 3773 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3774 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3775 r.task.taskId, r.shortComponentName); 3776 3777 r.startFreezingScreenLocked(r.app, 0); 3778 3779 mStackSupervisor.removeChildActivityContainers(r); 3780 3781 try { 3782 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3783 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3784 + r); 3785 r.forceNewConfig = false; 3786 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3787 changes, !andResume, new Configuration(mService.mConfiguration)); 3788 // Note: don't need to call pauseIfSleepingLocked() here, because 3789 // the caller will only pass in 'andResume' if this activity is 3790 // currently resumed, which implies we aren't sleeping. 3791 } catch (RemoteException e) { 3792 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3793 } 3794 3795 if (andResume) { 3796 r.results = null; 3797 r.newIntents = null; 3798 r.state = ActivityState.RESUMED; 3799 } else { 3800 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3801 r.state = ActivityState.PAUSED; 3802 } 3803 3804 return true; 3805 } 3806 3807 boolean willActivityBeVisibleLocked(IBinder token) { 3808 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3809 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3810 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3811 final ActivityRecord r = activities.get(activityNdx); 3812 if (r.appToken == token) { 3813 return true; 3814 } 3815 if (r.fullscreen && !r.finishing) { 3816 return false; 3817 } 3818 } 3819 } 3820 final ActivityRecord r = ActivityRecord.forToken(token); 3821 if (r == null) { 3822 return false; 3823 } 3824 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3825 + " would have returned true for r=" + r); 3826 return !r.finishing; 3827 } 3828 3829 void closeSystemDialogsLocked() { 3830 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3831 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3832 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3833 final ActivityRecord r = activities.get(activityNdx); 3834 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3835 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3836 } 3837 } 3838 } 3839 } 3840 3841 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3842 boolean didSomething = false; 3843 TaskRecord lastTask = null; 3844 ComponentName homeActivity = null; 3845 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3846 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3847 int numActivities = activities.size(); 3848 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3849 ActivityRecord r = activities.get(activityNdx); 3850 final boolean samePackage = r.packageName.equals(name) 3851 || (name == null && r.userId == userId); 3852 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3853 && (samePackage || r.task == lastTask) 3854 && (r.app == null || evenPersistent || !r.app.persistent)) { 3855 if (!doit) { 3856 if (r.finishing) { 3857 // If this activity is just finishing, then it is not 3858 // interesting as far as something to stop. 3859 continue; 3860 } 3861 return true; 3862 } 3863 if (r.isHomeActivity()) { 3864 if (homeActivity != null && homeActivity.equals(r.realActivity)) { 3865 Slog.i(TAG, "Skip force-stop again " + r); 3866 continue; 3867 } else { 3868 homeActivity = r.realActivity; 3869 } 3870 } 3871 didSomething = true; 3872 Slog.i(TAG, " Force finishing activity " + r); 3873 if (samePackage) { 3874 if (r.app != null) { 3875 r.app.removed = true; 3876 } 3877 r.app = null; 3878 } 3879 lastTask = r.task; 3880 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3881 true)) { 3882 // r has been deleted from mActivities, accommodate. 3883 --numActivities; 3884 --activityNdx; 3885 } 3886 } 3887 } 3888 } 3889 return didSomething; 3890 } 3891 3892 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3893 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3894 final TaskRecord task = mTaskHistory.get(taskNdx); 3895 ActivityRecord r = null; 3896 ActivityRecord top = null; 3897 int numActivities = 0; 3898 int numRunning = 0; 3899 final ArrayList<ActivityRecord> activities = task.mActivities; 3900 if (activities.isEmpty()) { 3901 continue; 3902 } 3903 if (!allowed && !task.isHomeTask() && task.effectiveUid != callingUid) { 3904 continue; 3905 } 3906 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3907 r = activities.get(activityNdx); 3908 3909 // Initialize state for next task if needed. 3910 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3911 top = r; 3912 numActivities = numRunning = 0; 3913 } 3914 3915 // Add 'r' into the current task. 3916 numActivities++; 3917 if (r.app != null && r.app.thread != null) { 3918 numRunning++; 3919 } 3920 3921 if (localLOGV) Slog.v( 3922 TAG, r.intent.getComponent().flattenToShortString() 3923 + ": task=" + r.task); 3924 } 3925 3926 RunningTaskInfo ci = new RunningTaskInfo(); 3927 ci.id = task.taskId; 3928 ci.baseActivity = r.intent.getComponent(); 3929 ci.topActivity = top.intent.getComponent(); 3930 ci.lastActiveTime = task.lastActiveTime; 3931 3932 if (top.task != null) { 3933 ci.description = top.task.lastDescription; 3934 } 3935 ci.numActivities = numActivities; 3936 ci.numRunning = numRunning; 3937 //System.out.println( 3938 // "#" + maxNum + ": " + " descr=" + ci.description); 3939 list.add(ci); 3940 } 3941 } 3942 3943 public void unhandledBackLocked() { 3944 final int top = mTaskHistory.size() - 1; 3945 if (DEBUG_SWITCH) Slog.d( 3946 TAG, "Performing unhandledBack(): top activity at " + top); 3947 if (top >= 0) { 3948 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3949 int activityTop = activities.size() - 1; 3950 if (activityTop > 0) { 3951 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3952 "unhandled-back", true); 3953 } 3954 } 3955 } 3956 3957 /** 3958 * Reset local parameters because an app's activity died. 3959 * @param app The app of the activity that died. 3960 * @return result from removeHistoryRecordsForAppLocked. 3961 */ 3962 boolean handleAppDiedLocked(ProcessRecord app) { 3963 if (mPausingActivity != null && mPausingActivity.app == app) { 3964 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3965 "App died while pausing: " + mPausingActivity); 3966 mPausingActivity = null; 3967 } 3968 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3969 mLastPausedActivity = null; 3970 mLastNoHistoryActivity = null; 3971 } 3972 3973 return removeHistoryRecordsForAppLocked(app); 3974 } 3975 3976 void handleAppCrashLocked(ProcessRecord app) { 3977 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3978 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3979 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3980 final ActivityRecord r = activities.get(activityNdx); 3981 if (r.app == app) { 3982 Slog.w(TAG, " Force finishing activity " 3983 + r.intent.getComponent().flattenToShortString()); 3984 // Force the destroy to skip right to removal. 3985 r.app = null; 3986 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 3987 } 3988 } 3989 } 3990 } 3991 3992 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3993 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3994 boolean printed = false; 3995 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3996 final TaskRecord task = mTaskHistory.get(taskNdx); 3997 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3998 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3999 dumpClient, dumpPackage, needSep, header, 4000 " Task id #" + task.taskId); 4001 if (printed) { 4002 header = null; 4003 } 4004 } 4005 return printed; 4006 } 4007 4008 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 4009 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 4010 4011 if ("all".equals(name)) { 4012 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4013 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 4014 } 4015 } else if ("top".equals(name)) { 4016 final int top = mTaskHistory.size() - 1; 4017 if (top >= 0) { 4018 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 4019 int listTop = list.size() - 1; 4020 if (listTop >= 0) { 4021 activities.add(list.get(listTop)); 4022 } 4023 } 4024 } else { 4025 ItemMatcher matcher = new ItemMatcher(); 4026 matcher.build(name); 4027 4028 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4029 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 4030 if (matcher.match(r1, r1.intent.getComponent())) { 4031 activities.add(r1); 4032 } 4033 } 4034 } 4035 } 4036 4037 return activities; 4038 } 4039 4040 ActivityRecord restartPackage(String packageName) { 4041 ActivityRecord starting = topRunningActivityLocked(null); 4042 4043 // All activities that came from the package must be 4044 // restarted as if there was a config change. 4045 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 4046 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 4047 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 4048 final ActivityRecord a = activities.get(activityNdx); 4049 if (a.info.packageName.equals(packageName)) { 4050 a.forceNewConfig = true; 4051 if (starting != null && a == starting && a.visible) { 4052 a.startFreezingScreenLocked(starting.app, 4053 ActivityInfo.CONFIG_SCREEN_LAYOUT); 4054 } 4055 } 4056 } 4057 } 4058 4059 return starting; 4060 } 4061 4062 void removeTask(TaskRecord task) { 4063 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 4064 mWindowManager.removeTask(task.taskId); 4065 final ActivityRecord r = mResumedActivity; 4066 if (r != null && r.task == task) { 4067 mResumedActivity = null; 4068 } 4069 4070 final int taskNdx = mTaskHistory.indexOf(task); 4071 final int topTaskNdx = mTaskHistory.size() - 1; 4072 if (task.isOverHomeStack() && taskNdx < topTaskNdx) { 4073 final TaskRecord nextTask = mTaskHistory.get(taskNdx + 1); 4074 if (!nextTask.isOverHomeStack()) { 4075 nextTask.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 4076 } 4077 } 4078 mTaskHistory.remove(task); 4079 updateTaskMovement(task, true); 4080 4081 if (task.mActivities.isEmpty()) { 4082 final boolean isVoiceSession = task.voiceSession != null; 4083 if (isVoiceSession) { 4084 try { 4085 task.voiceSession.taskFinished(task.intent, task.taskId); 4086 } catch (RemoteException e) { 4087 } 4088 } 4089 if (task.autoRemoveFromRecents() || isVoiceSession) { 4090 // Task creator asked to remove this when done, or this task was a voice 4091 // interaction, so it should not remain on the recent tasks list. 4092 mService.mRecentTasks.remove(task); 4093 task.removedFromRecents(mService.mTaskPersister); 4094 } 4095 } 4096 4097 if (mTaskHistory.isEmpty()) { 4098 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 4099 if (isOnHomeDisplay()) { 4100 mStackSupervisor.moveHomeStack(!isHomeStack()); 4101 } 4102 if (mStacks != null) { 4103 mStacks.remove(this); 4104 mStacks.add(0, this); 4105 } 4106 mActivityContainer.onTaskListEmptyLocked(); 4107 } 4108 } 4109 4110 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 4111 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 4112 boolean toTop) { 4113 TaskRecord task = new TaskRecord(mService, taskId, info, intent, voiceSession, 4114 voiceInteractor); 4115 addTask(task, toTop, false); 4116 return task; 4117 } 4118 4119 ArrayList<TaskRecord> getAllTasks() { 4120 return new ArrayList<TaskRecord>(mTaskHistory); 4121 } 4122 4123 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 4124 task.stack = this; 4125 if (toTop) { 4126 insertTaskAtTop(task); 4127 } else { 4128 mTaskHistory.add(0, task); 4129 updateTaskMovement(task, false); 4130 } 4131 if (!moving && task.voiceSession != null) { 4132 try { 4133 task.voiceSession.taskStarted(task.intent, task.taskId); 4134 } catch (RemoteException e) { 4135 } 4136 } 4137 } 4138 4139 public int getStackId() { 4140 return mStackId; 4141 } 4142 4143 @Override 4144 public String toString() { 4145 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 4146 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 4147 } 4148} 4149