ActivityStack.java revision bb742462781a73bb25516067c8fe6311c1c8a93e
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_SAVED_STATE; 40import static com.android.server.am.ActivityStackSupervisor.DEBUG_SCREENSHOTS; 41import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 42import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 43 44import com.android.internal.app.IVoiceInteractor; 45import com.android.internal.os.BatteryStatsImpl; 46import com.android.server.Watchdog; 47import com.android.server.am.ActivityManagerService.ItemMatcher; 48import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 49import com.android.server.am.ActivityStackSupervisor.ActivityDisplay; 50import com.android.server.wm.AppTransition; 51import com.android.server.wm.TaskGroup; 52import com.android.server.wm.WindowManagerService; 53 54import android.app.Activity; 55import android.app.ActivityManager; 56import android.app.ActivityOptions; 57import android.app.AppGlobals; 58import android.app.IActivityController; 59import android.app.ResultInfo; 60import android.app.ActivityManager.RunningTaskInfo; 61import android.content.ComponentName; 62import android.content.Intent; 63import android.content.pm.ActivityInfo; 64import android.content.pm.PackageManager; 65import android.content.res.Configuration; 66import android.content.res.Resources; 67import android.graphics.Bitmap; 68import android.net.Uri; 69import android.os.Binder; 70import android.os.Bundle; 71import android.os.Debug; 72import android.os.Handler; 73import android.os.IBinder; 74import android.os.Looper; 75import android.os.Message; 76import android.os.PersistableBundle; 77import android.os.RemoteException; 78import android.os.SystemClock; 79import android.os.Trace; 80import android.os.UserHandle; 81import android.service.voice.IVoiceInteractionSession; 82import android.util.EventLog; 83import android.util.Slog; 84import android.view.Display; 85 86import java.io.FileDescriptor; 87import java.io.PrintWriter; 88import java.lang.ref.WeakReference; 89import java.util.ArrayList; 90import java.util.Iterator; 91import java.util.List; 92import java.util.Objects; 93 94/** 95 * State and management of a single stack of activities. 96 */ 97final class ActivityStack { 98 99 // Ticks during which we check progress while waiting for an app to launch. 100 static final int LAUNCH_TICK = 500; 101 102 // How long we wait until giving up on the last activity to pause. This 103 // is short because it directly impacts the responsiveness of starting the 104 // next activity. 105 static final int PAUSE_TIMEOUT = 500; 106 107 // How long we wait for the activity to tell us it has stopped before 108 // giving up. This is a good amount of time because we really need this 109 // from the application in order to get its saved state. 110 static final int STOP_TIMEOUT = 10*1000; 111 112 // How long we wait until giving up on an activity telling us it has 113 // finished destroying itself. 114 static final int DESTROY_TIMEOUT = 10*1000; 115 116 // How long until we reset a task when the user returns to it. Currently 117 // disabled. 118 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 119 120 // How long between activity launches that we consider safe to not warn 121 // the user about an unexpected activity being launched on top. 122 static final long START_WARN_TIME = 5*1000; 123 124 // Set to false to disable the preview that is shown while a new activity 125 // is being started. 126 static final boolean SHOW_APP_STARTING_PREVIEW = true; 127 128 // How long to wait for all background Activities to redraw following a call to 129 // convertToTranslucent(). 130 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 131 132 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 133 134 enum ActivityState { 135 INITIALIZING, 136 RESUMED, 137 PAUSING, 138 PAUSED, 139 STOPPING, 140 STOPPED, 141 FINISHING, 142 DESTROYING, 143 DESTROYED 144 } 145 146 final ActivityManagerService mService; 147 final WindowManagerService mWindowManager; 148 149 /** 150 * The back history of all previous (and possibly still 151 * running) activities. It contains #TaskRecord objects. 152 */ 153 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 154 155 /** 156 * Used for validating app tokens with window manager. 157 */ 158 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 159 160 /** 161 * List of running activities, sorted by recent usage. 162 * The first entry in the list is the least recently used. 163 * It contains HistoryRecord objects. 164 */ 165 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 166 167 /** 168 * Animations that for the current transition have requested not to 169 * be considered for the transition animation. 170 */ 171 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 172 173 /** 174 * When we are in the process of pausing an activity, before starting the 175 * next one, this variable holds the activity that is currently being paused. 176 */ 177 ActivityRecord mPausingActivity = null; 178 179 /** 180 * This is the last activity that we put into the paused state. This is 181 * used to determine if we need to do an activity transition while sleeping, 182 * when we normally hold the top activity paused. 183 */ 184 ActivityRecord mLastPausedActivity = null; 185 186 /** 187 * Activities that specify No History must be removed once the user navigates away from them. 188 * If the device goes to sleep with such an activity in the paused state then we save it here 189 * and finish it later if another activity replaces it on wakeup. 190 */ 191 ActivityRecord mLastNoHistoryActivity = null; 192 193 /** 194 * Current activity that is resumed, or null if there is none. 195 */ 196 ActivityRecord mResumedActivity = null; 197 198 /** 199 * This is the last activity that has been started. It is only used to 200 * identify when multiple activities are started at once so that the user 201 * can be warned they may not be in the activity they think they are. 202 */ 203 ActivityRecord mLastStartedActivity = null; 204 205 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 206 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 207 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 208 // Activity in mTranslucentActivityWaiting is notified via 209 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 210 // background activity being drawn then the same call will be made with a true value. 211 ActivityRecord mTranslucentActivityWaiting = null; 212 private ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 213 new ArrayList<ActivityRecord>(); 214 // Options passed from the caller of the convertToTranslucent to the activity that will 215 // appear below it. 216 ActivityOptions mReturningActivityOptions = null; 217 218 /** 219 * Set when we know we are going to be calling updateConfiguration() 220 * soon, so want to skip intermediate config checks. 221 */ 222 boolean mConfigWillChange; 223 224 long mLaunchStartTime = 0; 225 long mFullyDrawnStartTime = 0; 226 227 /** 228 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 229 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 230 */ 231 private ActivityRecord mLastScreenshotActivity = null; 232 private Bitmap mLastScreenshotBitmap = null; 233 234 int mThumbnailWidth = -1; 235 int mThumbnailHeight = -1; 236 237 int mCurrentUser; 238 239 final int mStackId; 240 final ActivityContainer mActivityContainer; 241 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 242 ArrayList<ActivityStack> mStacks; 243 /** The attached Display's unique identifier, or -1 if detached */ 244 int mDisplayId; 245 246 /** Run all ActivityStacks through this */ 247 final ActivityStackSupervisor mStackSupervisor; 248 249 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 250 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 251 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 252 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 253 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 254 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 255 static final int STOP_MEDIA_PLAYING_TIMEOUT_MSG = 256 ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 7; 257 258 static class ScheduleDestroyArgs { 259 final ProcessRecord mOwner; 260 final String mReason; 261 ScheduleDestroyArgs(ProcessRecord owner, String reason) { 262 mOwner = owner; 263 mReason = reason; 264 } 265 } 266 267 final Handler mHandler; 268 269 final class ActivityStackHandler extends Handler { 270 //public Handler() { 271 // if (localLOGV) Slog.v(TAG, "Handler started!"); 272 //} 273 ActivityStackHandler(Looper looper) { 274 super(looper); 275 } 276 277 @Override 278 public void handleMessage(Message msg) { 279 switch (msg.what) { 280 case PAUSE_TIMEOUT_MSG: { 281 ActivityRecord r = (ActivityRecord)msg.obj; 282 // We don't at this point know if the activity is fullscreen, 283 // so we need to be conservative and assume it isn't. 284 Slog.w(TAG, "Activity pause timeout for " + r); 285 synchronized (mService) { 286 if (r.app != null) { 287 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 288 } 289 activityPausedLocked(r.appToken, true, r.persistentState); 290 } 291 } break; 292 case LAUNCH_TICK_MSG: { 293 ActivityRecord r = (ActivityRecord)msg.obj; 294 synchronized (mService) { 295 if (r.continueLaunchTickingLocked()) { 296 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 297 } 298 } 299 } break; 300 case DESTROY_TIMEOUT_MSG: { 301 ActivityRecord r = (ActivityRecord)msg.obj; 302 // We don't at this point know if the activity is fullscreen, 303 // so we need to be conservative and assume it isn't. 304 Slog.w(TAG, "Activity destroy timeout for " + r); 305 synchronized (mService) { 306 activityDestroyedLocked(r != null ? r.appToken : null); 307 } 308 } break; 309 case STOP_TIMEOUT_MSG: { 310 ActivityRecord r = (ActivityRecord)msg.obj; 311 // We don't at this point know if the activity is fullscreen, 312 // so we need to be conservative and assume it isn't. 313 Slog.w(TAG, "Activity stop timeout for " + r); 314 synchronized (mService) { 315 if (r.isInHistory()) { 316 activityStoppedLocked(r, null, null, null); 317 } 318 } 319 } break; 320 case DESTROY_ACTIVITIES_MSG: { 321 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 322 synchronized (mService) { 323 destroyActivitiesLocked(args.mOwner, args.mReason); 324 } 325 } break; 326 case TRANSLUCENT_TIMEOUT_MSG: { 327 synchronized (mService) { 328 notifyActivityDrawnLocked(null); 329 } 330 } break; 331 case STOP_MEDIA_PLAYING_TIMEOUT_MSG: { 332 synchronized (mService) { 333 final ActivityRecord r = getMediaPlayer(); 334 Slog.e(TAG, "Timeout waiting for stopMediaPlaying player=" + r); 335 if (r != null) { 336 mService.killAppAtUsersRequest(r.app, null); 337 } 338 } 339 } break; 340 } 341 } 342 } 343 344 int numActivities() { 345 int count = 0; 346 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 347 count += mTaskHistory.get(taskNdx).mActivities.size(); 348 } 349 return count; 350 } 351 352 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 353 mActivityContainer = activityContainer; 354 mStackSupervisor = activityContainer.getOuter(); 355 mService = mStackSupervisor.mService; 356 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 357 mWindowManager = mService.mWindowManager; 358 mStackId = activityContainer.mStackId; 359 mCurrentUser = mService.mCurrentUserId; 360 // Get the activity screenshot thumbnail dimensions 361 Resources res = mService.mContext.getResources(); 362 mThumbnailWidth = res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 363 mThumbnailHeight = res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 364 } 365 366 /** 367 * Checks whether the userid is a profile of the current user. 368 */ 369 private boolean isCurrentProfileLocked(int userId) { 370 if (userId == mCurrentUser) return true; 371 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 372 if (mService.mCurrentProfileIds[i] == userId) return true; 373 } 374 return false; 375 } 376 377 boolean okToShowLocked(ActivityRecord r) { 378 return isCurrentProfileLocked(r.userId) 379 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 380 } 381 382 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 383 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 384 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 385 if (r != null) { 386 return r; 387 } 388 } 389 return null; 390 } 391 392 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 393 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 394 final TaskRecord task = mTaskHistory.get(taskNdx); 395 final ArrayList<ActivityRecord> activities = task.mActivities; 396 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 397 ActivityRecord r = activities.get(activityNdx); 398 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 399 return r; 400 } 401 } 402 } 403 return null; 404 } 405 406 /** 407 * This is a simplified version of topRunningActivityLocked that provides a number of 408 * optional skip-over modes. It is intended for use with the ActivityController hook only. 409 * 410 * @param token If non-null, any history records matching this token will be skipped. 411 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 412 * 413 * @return Returns the HistoryRecord of the next activity on the stack. 414 */ 415 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 416 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 417 TaskRecord task = mTaskHistory.get(taskNdx); 418 if (task.taskId == taskId) { 419 continue; 420 } 421 ArrayList<ActivityRecord> activities = task.mActivities; 422 for (int i = activities.size() - 1; i >= 0; --i) { 423 final ActivityRecord r = activities.get(i); 424 // Note: the taskId check depends on real taskId fields being non-zero 425 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 426 return r; 427 } 428 } 429 } 430 return null; 431 } 432 433 final ActivityRecord topActivity() { 434 // Iterate to find the first non-empty task stack. Note that this code can 435 // be simplified once we stop storing tasks with empty mActivities lists. 436 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 437 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 438 final int topActivityNdx = activities.size() - 1; 439 if (topActivityNdx >= 0) { 440 return activities.get(topActivityNdx); 441 } 442 } 443 return null; 444 } 445 446 final TaskRecord topTask() { 447 final int size = mTaskHistory.size(); 448 if (size > 0) { 449 return mTaskHistory.get(size - 1); 450 } 451 return null; 452 } 453 454 TaskRecord taskForIdLocked(int id) { 455 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 456 final TaskRecord task = mTaskHistory.get(taskNdx); 457 if (task.taskId == id) { 458 return task; 459 } 460 } 461 return null; 462 } 463 464 ActivityRecord isInStackLocked(IBinder token) { 465 final ActivityRecord r = ActivityRecord.forToken(token); 466 if (r != null) { 467 final TaskRecord task = r.task; 468 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 469 if (task.stack != this) Slog.w(TAG, 470 "Illegal state! task does not point to stack it is in."); 471 return r; 472 } 473 } 474 return null; 475 } 476 477 final boolean updateLRUListLocked(ActivityRecord r) { 478 final boolean hadit = mLRUActivities.remove(r); 479 mLRUActivities.add(r); 480 return hadit; 481 } 482 483 final boolean isHomeStack() { 484 return mStackId == HOME_STACK_ID; 485 } 486 487 final boolean isOnHomeDisplay() { 488 return isAttached() && 489 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 490 } 491 492 final void moveToFront() { 493 if (isAttached()) { 494 if (isOnHomeDisplay()) { 495 mStackSupervisor.moveHomeStack(isHomeStack()); 496 } 497 mStacks.remove(this); 498 mStacks.add(this); 499 } 500 } 501 502 final boolean isAttached() { 503 return mStacks != null; 504 } 505 506 /** 507 * Returns the top activity in any existing task matching the given 508 * Intent. Returns null if no such task is found. 509 */ 510 ActivityRecord findTaskLocked(ActivityRecord target) { 511 Intent intent = target.intent; 512 ActivityInfo info = target.info; 513 ComponentName cls = intent.getComponent(); 514 if (info.targetActivity != null) { 515 cls = new ComponentName(info.packageName, info.targetActivity); 516 } 517 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 518 boolean isDocument = intent != null & intent.isDocument(); 519 // If documentData is non-null then it must match the existing task data. 520 Uri documentData = isDocument ? intent.getData() : null; 521 522 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 523 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 524 final TaskRecord task = mTaskHistory.get(taskNdx); 525 if (task.voiceSession != null) { 526 // We never match voice sessions; those always run independently. 527 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 528 continue; 529 } 530 if (task.userId != userId) { 531 // Looking for a different task. 532 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 533 continue; 534 } 535 final ActivityRecord r = task.getTopActivity(); 536 if (r == null || r.finishing || r.userId != userId || 537 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 538 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 539 continue; 540 } 541 542 final Intent taskIntent = task.intent; 543 final Intent affinityIntent = task.affinityIntent; 544 final boolean taskIsDocument; 545 final Uri taskDocumentData; 546 if (taskIntent != null && taskIntent.isDocument()) { 547 taskIsDocument = true; 548 taskDocumentData = taskIntent.getData(); 549 } else if (affinityIntent != null && affinityIntent.isDocument()) { 550 taskIsDocument = true; 551 taskDocumentData = affinityIntent.getData(); 552 } else { 553 taskIsDocument = false; 554 taskDocumentData = null; 555 } 556 557 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 558 + taskIntent.getComponent().flattenToShortString() 559 + "/aff=" + r.task.affinity + " to new cls=" 560 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 561 if (!isDocument && !taskIsDocument && task.affinity != null) { 562 if (task.affinity.equals(target.taskAffinity)) { 563 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 564 return r; 565 } 566 } else if (taskIntent != null && taskIntent.getComponent() != null && 567 taskIntent.getComponent().compareTo(cls) == 0 && 568 Objects.equals(documentData, taskDocumentData)) { 569 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 570 //dump(); 571 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 572 + r.intent); 573 return r; 574 } else if (affinityIntent != null && affinityIntent.getComponent() != null && 575 affinityIntent.getComponent().compareTo(cls) == 0 && 576 Objects.equals(documentData, taskDocumentData)) { 577 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 578 //dump(); 579 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 580 + r.intent); 581 return r; 582 } else if (DEBUG_TASKS) { 583 Slog.d(TAG, "Not a match: " + task); 584 } 585 } 586 587 return null; 588 } 589 590 /** 591 * Returns the first activity (starting from the top of the stack) that 592 * is the same as the given activity. Returns null if no such activity 593 * is found. 594 */ 595 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 596 ComponentName cls = intent.getComponent(); 597 if (info.targetActivity != null) { 598 cls = new ComponentName(info.packageName, info.targetActivity); 599 } 600 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 601 602 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 603 TaskRecord task = mTaskHistory.get(taskNdx); 604 if (!isCurrentProfileLocked(task.userId)) { 605 return null; 606 } 607 final ArrayList<ActivityRecord> activities = task.mActivities; 608 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 609 ActivityRecord r = activities.get(activityNdx); 610 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 611 //Slog.i(TAG, "Found matching class!"); 612 //dump(); 613 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 614 return r; 615 } 616 } 617 } 618 619 return null; 620 } 621 622 /* 623 * Move the activities around in the stack to bring a user to the foreground. 624 */ 625 final void switchUserLocked(int userId) { 626 if (mCurrentUser == userId) { 627 return; 628 } 629 mCurrentUser = userId; 630 631 // Move userId's tasks to the top. 632 int index = mTaskHistory.size(); 633 for (int i = 0; i < index; ) { 634 TaskRecord task = mTaskHistory.get(i); 635 if (isCurrentProfileLocked(task.userId)) { 636 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 637 " moving " + task + " to top"); 638 mTaskHistory.remove(i); 639 mTaskHistory.add(task); 640 --index; 641 // Use same value for i. 642 } else { 643 ++i; 644 } 645 } 646 if (VALIDATE_TOKENS) { 647 validateAppTokensLocked(); 648 } 649 } 650 651 void minimalResumeActivityLocked(ActivityRecord r) { 652 r.state = ActivityState.RESUMED; 653 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 654 + " (starting new instance)"); 655 r.stopped = false; 656 mResumedActivity = r; 657 r.task.touchActiveTime(); 658 mService.addRecentTaskLocked(r.task); 659 completeResumeLocked(r); 660 mStackSupervisor.checkReadyForSleepLocked(); 661 setLaunchTime(r); 662 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 663 } 664 665 private void startLaunchTraces() { 666 if (mFullyDrawnStartTime != 0) { 667 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 668 } 669 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 670 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 671 } 672 673 private void stopFullyDrawnTraceIfNeeded() { 674 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 675 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 676 mFullyDrawnStartTime = 0; 677 } 678 } 679 680 void setLaunchTime(ActivityRecord r) { 681 if (r.displayStartTime == 0) { 682 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 683 if (mLaunchStartTime == 0) { 684 startLaunchTraces(); 685 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 686 } 687 } else if (mLaunchStartTime == 0) { 688 startLaunchTraces(); 689 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 690 } 691 } 692 693 void clearLaunchTime(ActivityRecord r) { 694 // Make sure that there is no activity waiting for this to launch. 695 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 696 r.displayStartTime = r.fullyDrawnStartTime = 0; 697 } else { 698 mStackSupervisor.removeTimeoutsForActivityLocked(r); 699 mStackSupervisor.scheduleIdleTimeoutLocked(r); 700 } 701 } 702 703 void awakeFromSleepingLocked() { 704 // Ensure activities are no longer sleeping. 705 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 706 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 707 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 708 activities.get(activityNdx).setSleeping(false); 709 } 710 } 711 } 712 713 /** 714 * @return true if something must be done before going to sleep. 715 */ 716 boolean checkReadyForSleepLocked() { 717 if (mResumedActivity != null) { 718 // Still have something resumed; can't sleep until it is paused. 719 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 720 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 721 startPausingLocked(false, true); 722 return true; 723 } 724 if (mPausingActivity != null) { 725 // Still waiting for something to pause; can't sleep yet. 726 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 727 return true; 728 } 729 730 return false; 731 } 732 733 void goToSleep() { 734 ensureActivitiesVisibleLocked(null, 0); 735 736 // Make sure any stopped but visible activities are now sleeping. 737 // This ensures that the activity's onStop() is called. 738 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 739 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 740 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 741 final ActivityRecord r = activities.get(activityNdx); 742 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 743 r.setSleeping(true); 744 } 745 } 746 } 747 } 748 749 /** 750 * This resets the saved state from the last screenshot, forcing a new screenshot to be taken 751 * again when requested. 752 */ 753 private void invalidateLastScreenshot() { 754 mLastScreenshotActivity = null; 755 if (mLastScreenshotBitmap != null) { 756 mLastScreenshotBitmap.recycle(); 757 } 758 mLastScreenshotBitmap = null; 759 } 760 761 public final Bitmap screenshotActivities(ActivityRecord who) { 762 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "screenshotActivities: " + who); 763 if (who.noDisplay) { 764 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tNo display"); 765 return null; 766 } 767 768 if (isHomeStack()) { 769 // This is an optimization -- since we never show Home or Recents within Recents itself, 770 // we can just go ahead and skip taking the screenshot if this is the home stack. In 771 // the case where the most recent task is not the task that was supplied, then the stack 772 // has changed, so invalidate the last screenshot(). 773 invalidateLastScreenshot(); 774 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tIs Home stack? " + isHomeStack()); 775 return null; 776 } 777 778 int w = mThumbnailWidth; 779 int h = mThumbnailHeight; 780 if (w > 0) { 781 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 782 || mLastScreenshotActivity.state == ActivityState.RESUMED 783 || mLastScreenshotBitmap.getWidth() != w 784 || mLastScreenshotBitmap.getHeight() != h) { 785 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tUpdating screenshot"); 786 mLastScreenshotActivity = who; 787 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 788 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 789 } 790 if (mLastScreenshotBitmap != null) { 791 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tReusing last screenshot"); 792 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 793 } 794 } 795 Slog.e(TAG, "Invalid thumbnail dimensions: " + w + "x" + h); 796 return null; 797 } 798 799 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 800 if (mPausingActivity != null) { 801 Slog.e(TAG, "Trying to pause when pause is already pending for " 802 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 803 } 804 ActivityRecord prev = mResumedActivity; 805 if (prev == null) { 806 Slog.e(TAG, "Trying to pause when nothing is resumed", 807 new RuntimeException("here").fillInStackTrace()); 808 mStackSupervisor.resumeTopActivitiesLocked(); 809 return; 810 } 811 812 if (mActivityContainer.mParentActivity == null) { 813 // Top level stack, not a child. Look for child stacks. 814 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 815 } 816 817 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 818 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 819 mResumedActivity = null; 820 mPausingActivity = prev; 821 mLastPausedActivity = prev; 822 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 823 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 824 prev.state = ActivityState.PAUSING; 825 prev.task.touchActiveTime(); 826 clearLaunchTime(prev); 827 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 828 if (mService.mHasRecents && (next == null || next.noDisplay || next.task != prev.task)) { 829 prev.updateThumbnail(screenshotActivities(prev), null); 830 } 831 stopFullyDrawnTraceIfNeeded(); 832 833 mService.updateCpuStats(); 834 835 if (prev.app != null && prev.app.thread != null) { 836 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 837 try { 838 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 839 prev.userId, System.identityHashCode(prev), 840 prev.shortComponentName); 841 mService.updateUsageStats(prev, false); 842 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 843 userLeaving, prev.configChangeFlags); 844 } catch (Exception e) { 845 // Ignore exception, if process died other code will cleanup. 846 Slog.w(TAG, "Exception thrown during pause", e); 847 mPausingActivity = null; 848 mLastPausedActivity = null; 849 mLastNoHistoryActivity = null; 850 } 851 } else { 852 mPausingActivity = null; 853 mLastPausedActivity = null; 854 mLastNoHistoryActivity = null; 855 } 856 857 // If we are not going to sleep, we want to ensure the device is 858 // awake until the next activity is started. 859 if (!mService.isSleepingOrShuttingDown()) { 860 mStackSupervisor.acquireLaunchWakelock(); 861 } 862 863 if (mPausingActivity != null) { 864 // Have the window manager pause its key dispatching until the new 865 // activity has started. If we're pausing the activity just because 866 // the screen is being turned off and the UI is sleeping, don't interrupt 867 // key dispatch; the same activity will pick it up again on wakeup. 868 if (!uiSleeping) { 869 prev.pauseKeyDispatchingLocked(); 870 } else { 871 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 872 } 873 874 // Schedule a pause timeout in case the app doesn't respond. 875 // We don't give it much time because this directly impacts the 876 // responsiveness seen by the user. 877 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 878 msg.obj = prev; 879 prev.pauseTime = SystemClock.uptimeMillis(); 880 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 881 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 882 } else { 883 // This activity failed to schedule the 884 // pause, so just treat it as being paused now. 885 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 886 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 887 } 888 } 889 890 final void activityPausedLocked(IBinder token, boolean timeout, 891 PersistableBundle persistentState) { 892 if (DEBUG_PAUSE) Slog.v( 893 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 894 895 final ActivityRecord r = isInStackLocked(token); 896 if (r != null) { 897 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 898 if (persistentState != null) { 899 r.persistentState = persistentState; 900 mService.notifyTaskPersisterLocked(r.task, false); 901 } 902 if (mPausingActivity == r) { 903 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 904 + (timeout ? " (due to timeout)" : " (pause complete)")); 905 r.state = ActivityState.PAUSED; 906 completePauseLocked(); 907 } else { 908 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 909 r.userId, System.identityHashCode(r), r.shortComponentName, 910 mPausingActivity != null 911 ? mPausingActivity.shortComponentName : "(none)"); 912 } 913 } 914 } 915 916 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, 917 PersistableBundle persistentState, CharSequence description) { 918 if (r.state != ActivityState.STOPPING) { 919 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 920 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 921 return; 922 } 923 if (persistentState != null) { 924 r.persistentState = persistentState; 925 mService.notifyTaskPersisterLocked(r.task, false); 926 } 927 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 928 if (icicle != null) { 929 // If icicle is null, this is happening due to a timeout, so we 930 // haven't really saved the state. 931 r.icicle = icicle; 932 r.haveState = true; 933 r.launchCount = 0; 934 r.updateThumbnail(null, description); 935 } 936 if (!r.stopped) { 937 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 938 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 939 r.stopped = true; 940 r.state = ActivityState.STOPPED; 941 if (mActivityContainer.mActivityDisplay.mMediaPlayingActivity == r) { 942 mStackSupervisor.setMediaPlayingLocked(r, false); 943 } 944 if (r.finishing) { 945 r.clearOptionsLocked(); 946 } else { 947 if (r.configDestroy) { 948 destroyActivityLocked(r, true, "stop-config"); 949 mStackSupervisor.resumeTopActivitiesLocked(); 950 } else { 951 mStackSupervisor.updatePreviousProcessLocked(r); 952 } 953 } 954 } 955 } 956 957 private void completePauseLocked() { 958 ActivityRecord prev = mPausingActivity; 959 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 960 961 if (prev != null) { 962 if (prev.finishing) { 963 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 964 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 965 } else if (prev.app != null) { 966 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 967 if (prev.waitingVisible) { 968 prev.waitingVisible = false; 969 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 970 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 971 TAG, "Complete pause, no longer waiting: " + prev); 972 } 973 if (prev.configDestroy) { 974 // The previous is being paused because the configuration 975 // is changing, which means it is actually stopping... 976 // To juggle the fact that we are also starting a new 977 // instance right now, we need to first completely stop 978 // the current instance before starting the new one. 979 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 980 destroyActivityLocked(prev, true, "pause-config"); 981 } else if (!isMediaPlaying()) { 982 // If we were playing then resumeTopActivities will release resources before 983 // stopping. 984 mStackSupervisor.mStoppingActivities.add(prev); 985 if (mStackSupervisor.mStoppingActivities.size() > 3 || 986 prev.frontOfTask && mTaskHistory.size() <= 1) { 987 // If we already have a few activities waiting to stop, 988 // then give up on things going idle and start clearing 989 // them out. Or if r is the last of activity of the last task the stack 990 // will be empty and must be cleared immediately. 991 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 992 mStackSupervisor.scheduleIdleLocked(); 993 } else { 994 mStackSupervisor.checkReadyForSleepLocked(); 995 } 996 } 997 } else { 998 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 999 prev = null; 1000 } 1001 mPausingActivity = null; 1002 } 1003 1004 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 1005 if (!mService.isSleepingOrShuttingDown()) { 1006 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 1007 } else { 1008 mStackSupervisor.checkReadyForSleepLocked(); 1009 ActivityRecord top = topStack.topRunningActivityLocked(null); 1010 if (top == null || (prev != null && top != prev)) { 1011 // If there are no more activities available to run, 1012 // do resume anyway to start something. Also if the top 1013 // activity on the stack is not the just paused activity, 1014 // we need to go ahead and resume it to ensure we complete 1015 // an in-flight app switch. 1016 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 1017 } 1018 } 1019 1020 if (prev != null) { 1021 prev.resumeKeyDispatchingLocked(); 1022 1023 if (prev.app != null && prev.cpuTimeAtResume > 0 1024 && mService.mBatteryStatsService.isOnBattery()) { 1025 long diff; 1026 synchronized (mService.mProcessCpuThread) { 1027 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 1028 - prev.cpuTimeAtResume; 1029 } 1030 if (diff > 0) { 1031 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 1032 synchronized (bsi) { 1033 BatteryStatsImpl.Uid.Proc ps = 1034 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 1035 prev.info.packageName); 1036 if (ps != null) { 1037 ps.addForegroundTimeLocked(diff); 1038 } 1039 } 1040 } 1041 } 1042 prev.cpuTimeAtResume = 0; // reset it 1043 } 1044 } 1045 1046 /** 1047 * Once we know that we have asked an application to put an activity in 1048 * the resumed state (either by launching it or explicitly telling it), 1049 * this function updates the rest of our state to match that fact. 1050 */ 1051 private void completeResumeLocked(ActivityRecord next) { 1052 next.idle = false; 1053 next.results = null; 1054 next.newIntents = null; 1055 if (next.nowVisible) { 1056 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1057 mStackSupervisor.dismissKeyguard(); 1058 } 1059 1060 // schedule an idle timeout in case the app doesn't do it for us. 1061 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1062 1063 mStackSupervisor.reportResumedActivityLocked(next); 1064 1065 next.resumeKeyDispatchingLocked(); 1066 mNoAnimActivities.clear(); 1067 1068 // Mark the point when the activity is resuming 1069 // TODO: To be more accurate, the mark should be before the onCreate, 1070 // not after the onResume. But for subsequent starts, onResume is fine. 1071 if (next.app != null) { 1072 synchronized (mService.mProcessCpuThread) { 1073 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1074 } 1075 } else { 1076 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1077 } 1078 1079 // If we are resuming the activity that we had last screenshotted, then we know it will be 1080 // updated, so invalidate the last screenshot to ensure we take a fresh one when requested 1081 if (next == mLastScreenshotActivity) { 1082 invalidateLastScreenshot(); 1083 } 1084 mReturningActivityOptions = null; 1085 } 1086 1087 private void setVisibile(ActivityRecord r, boolean visible) { 1088 r.visible = visible; 1089 mWindowManager.setAppVisibility(r.appToken, visible); 1090 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1091 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1092 ActivityContainer container = containers.get(containerNdx); 1093 container.setVisible(visible); 1094 } 1095 } 1096 1097 // Checks if any of the stacks above this one has a fullscreen activity behind it. 1098 // If so, this stack is hidden, otherwise it is visible. 1099 private boolean isStackVisible() { 1100 if (!isAttached()) { 1101 return false; 1102 } 1103 1104 if (mStackSupervisor.isFrontStack(this)) { 1105 return true; 1106 } 1107 1108 /** 1109 * Start at the task above this one and go up, looking for a visible 1110 * fullscreen activity, or a translucent activity that requested the 1111 * wallpaper to be shown behind it. 1112 */ 1113 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) { 1114 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks(); 1115 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) { 1116 final TaskRecord task = tasks.get(taskNdx); 1117 final ArrayList<ActivityRecord> activities = task.mActivities; 1118 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) { 1119 final ActivityRecord r = activities.get(activityNdx); 1120 1121 // Conditions for an activity to obscure the stack we're 1122 // examining: 1123 // 1. Not Finishing AND Visible AND: 1124 // 2. Either: 1125 // - Full Screen Activity OR 1126 // - On top of Home and our stack is NOT home 1127 if (!r.finishing && r.visible && (r.fullscreen || 1128 (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()))) { 1129 return false; 1130 } 1131 } 1132 } 1133 } 1134 1135 return true; 1136 } 1137 1138 /** 1139 * Make sure that all activities that need to be visible (that is, they 1140 * currently can be seen by the user) actually are. 1141 */ 1142 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1143 ActivityRecord top = topRunningActivityLocked(null); 1144 if (top == null) { 1145 return; 1146 } 1147 if (DEBUG_VISBILITY) Slog.v( 1148 TAG, "ensureActivitiesVisible behind " + top 1149 + " configChanges=0x" + Integer.toHexString(configChanges)); 1150 1151 if (mTranslucentActivityWaiting != top) { 1152 mUndrawnActivitiesBelowTopTranslucent.clear(); 1153 if (mTranslucentActivityWaiting != null) { 1154 // Call the callback with a timeout indication. 1155 notifyActivityDrawnLocked(null); 1156 mTranslucentActivityWaiting = null; 1157 } 1158 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1159 } 1160 1161 // If the top activity is not fullscreen, then we need to 1162 // make sure any activities under it are now visible. 1163 boolean aboveTop = true; 1164 boolean behindFullscreen = !isStackVisible(); 1165 1166 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1167 final TaskRecord task = mTaskHistory.get(taskNdx); 1168 final ArrayList<ActivityRecord> activities = task.mActivities; 1169 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1170 final ActivityRecord r = activities.get(activityNdx); 1171 if (r.finishing) { 1172 continue; 1173 } 1174 if (aboveTop && r != top) { 1175 continue; 1176 } 1177 aboveTop = false; 1178 // mLaunchingBehind: Activities launching behind are at the back of the task stack 1179 // but must be drawn initially for the animation as though they were visible. 1180 if (!behindFullscreen || r.mLaunchTaskBehind) { 1181 if (DEBUG_VISBILITY) Slog.v( 1182 TAG, "Make visible? " + r + " finishing=" + r.finishing 1183 + " state=" + r.state); 1184 1185 // First: if this is not the current activity being started, make 1186 // sure it matches the current configuration. 1187 if (r != starting) { 1188 ensureActivityConfigurationLocked(r, 0); 1189 } 1190 1191 if (r.app == null || r.app.thread == null) { 1192 // This activity needs to be visible, but isn't even 1193 // running... get it started, but don't resume it 1194 // at this point. 1195 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1196 if (r != starting) { 1197 r.startFreezingScreenLocked(r.app, configChanges); 1198 } 1199 if (!r.visible || r.mLaunchTaskBehind) { 1200 if (DEBUG_VISBILITY) Slog.v( 1201 TAG, "Starting and making visible: " + r); 1202 setVisibile(r, true); 1203 } 1204 if (r != starting) { 1205 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1206 } 1207 1208 } else if (r.visible) { 1209 // If this activity is already visible, then there is nothing 1210 // else to do here. 1211 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1212 r.stopFreezingScreenLocked(false); 1213 try { 1214 if (mReturningActivityOptions != null && r == top && activityNdx > 0) { 1215 ActivityRecord under = activities.get(activityNdx - 1); 1216 under.app.thread.scheduleOnNewActivityOptions(under.appToken, 1217 mReturningActivityOptions); 1218 } 1219 } catch(RemoteException e) { 1220 } 1221 } else { 1222 // This activity is not currently visible, but is running. 1223 // Tell it to become visible. 1224 r.visible = true; 1225 if (r.state != ActivityState.RESUMED && r != starting) { 1226 // If this activity is paused, tell it 1227 // to now show its window. 1228 if (DEBUG_VISBILITY) Slog.v( 1229 TAG, "Making visible and scheduling visibility: " + r); 1230 try { 1231 if (mTranslucentActivityWaiting != null) { 1232 r.updateOptionsLocked(mReturningActivityOptions); 1233 mUndrawnActivitiesBelowTopTranslucent.add(r); 1234 } 1235 setVisibile(r, true); 1236 r.sleeping = false; 1237 r.app.pendingUiClean = true; 1238 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1239 r.stopFreezingScreenLocked(false); 1240 } catch (Exception e) { 1241 // Just skip on any failure; we'll make it 1242 // visible when it next restarts. 1243 Slog.w(TAG, "Exception thrown making visibile: " 1244 + r.intent.getComponent(), e); 1245 } 1246 } 1247 } 1248 1249 // Aggregate current change flags. 1250 configChanges |= r.configChangeFlags; 1251 1252 if (r.fullscreen) { 1253 // At this point, nothing else needs to be shown 1254 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1255 behindFullscreen = true; 1256 } else if (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()) { 1257 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1258 behindFullscreen = true; 1259 } 1260 } else { 1261 if (DEBUG_VISBILITY) Slog.v( 1262 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1263 + " state=" + r.state 1264 + " behindFullscreen=" + behindFullscreen); 1265 // Now for any activities that aren't visible to the user, make 1266 // sure they no longer are keeping the screen frozen. 1267 if (r.visible) { 1268 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1269 try { 1270 setVisibile(r, false); 1271 switch (r.state) { 1272 case STOPPING: 1273 case STOPPED: 1274 if (r.app != null && r.app.thread != null) { 1275 if (DEBUG_VISBILITY) Slog.v( 1276 TAG, "Scheduling invisibility: " + r); 1277 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1278 } 1279 break; 1280 1281 case INITIALIZING: 1282 case RESUMED: 1283 case PAUSING: 1284 case PAUSED: 1285 // This case created for transitioning activities from 1286 // translucent to opaque {@link Activity#convertToOpaque}. 1287 if (getMediaPlayer() == r) { 1288 releaseMediaResources(); 1289 } else { 1290 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1291 mStackSupervisor.mStoppingActivities.add(r); 1292 } 1293 mStackSupervisor.scheduleIdleLocked(); 1294 } 1295 break; 1296 1297 default: 1298 break; 1299 } 1300 } catch (Exception e) { 1301 // Just skip on any failure; we'll make it 1302 // visible when it next restarts. 1303 Slog.w(TAG, "Exception thrown making hidden: " 1304 + r.intent.getComponent(), e); 1305 } 1306 } else { 1307 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1308 } 1309 } 1310 } 1311 } 1312 1313 if (mTranslucentActivityWaiting != null && 1314 mUndrawnActivitiesBelowTopTranslucent.isEmpty()) { 1315 // Nothing is getting drawn or everything was already visible, don't wait for timeout. 1316 notifyActivityDrawnLocked(null); 1317 } 1318 } 1319 1320 void convertToTranslucent(ActivityRecord r, ActivityOptions options) { 1321 mTranslucentActivityWaiting = r; 1322 mUndrawnActivitiesBelowTopTranslucent.clear(); 1323 mReturningActivityOptions = options; 1324 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1325 } 1326 1327 /** 1328 * Called as activities below the top translucent activity are redrawn. When the last one is 1329 * redrawn notify the top activity by calling 1330 * {@link Activity#onTranslucentConversionComplete}. 1331 * 1332 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1333 * occurred and the activity will be notified immediately. 1334 */ 1335 void notifyActivityDrawnLocked(ActivityRecord r) { 1336 mActivityContainer.setDrawn(); 1337 if ((r == null) 1338 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1339 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1340 // The last undrawn activity below the top has just been drawn. If there is an 1341 // opaque activity at the top, notify it that it can become translucent safely now. 1342 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1343 mTranslucentActivityWaiting = null; 1344 mUndrawnActivitiesBelowTopTranslucent.clear(); 1345 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1346 1347 if (waitingActivity != null) { 1348 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1349 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1350 try { 1351 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1352 waitingActivity.appToken, r != null); 1353 } catch (RemoteException e) { 1354 } 1355 } 1356 } 1357 } 1358 } 1359 1360 /** If any activities below the top running one are in the INITIALIZING state and they have a 1361 * starting window displayed then remove that starting window. It is possible that the activity 1362 * in this state will never resumed in which case that starting window will be orphaned. */ 1363 void cancelInitializingActivities() { 1364 final ActivityRecord topActivity = topRunningActivityLocked(null); 1365 boolean aboveTop = true; 1366 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1367 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1368 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1369 final ActivityRecord r = activities.get(activityNdx); 1370 if (aboveTop) { 1371 if (r == topActivity) { 1372 aboveTop = false; 1373 } 1374 continue; 1375 } 1376 1377 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1378 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1379 r.mStartingWindowShown = false; 1380 mWindowManager.removeAppStartingWindow(r.appToken); 1381 } 1382 } 1383 } 1384 } 1385 1386 /** 1387 * Ensure that the top activity in the stack is resumed. 1388 * 1389 * @param prev The previously resumed activity, for when in the process 1390 * of pausing; can be null to call from elsewhere. 1391 * 1392 * @return Returns true if something is being resumed, or false if 1393 * nothing happened. 1394 */ 1395 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1396 return resumeTopActivityLocked(prev, null); 1397 } 1398 1399 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1400 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1401 1402 ActivityRecord parent = mActivityContainer.mParentActivity; 1403 if ((parent != null && parent.state != ActivityState.RESUMED) || 1404 !mActivityContainer.isAttachedLocked()) { 1405 // Do not resume this stack if its parent is not resumed. 1406 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1407 return false; 1408 } 1409 1410 cancelInitializingActivities(); 1411 1412 // Find the first activity that is not finishing. 1413 ActivityRecord next = topRunningActivityLocked(null); 1414 1415 // Remember how we'll process this pause/resume situation, and ensure 1416 // that the state is reset however we wind up proceeding. 1417 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1418 mStackSupervisor.mUserLeaving = false; 1419 1420 final TaskRecord prevTask = prev != null ? prev.task : null; 1421 if (next == null) { 1422 // There are no more activities! Let's just start up the 1423 // Launcher... 1424 ActivityOptions.abort(options); 1425 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1426 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1427 // Only resume home if on home display 1428 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1429 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1430 return isOnHomeDisplay() && 1431 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1432 } 1433 1434 next.delayedResume = false; 1435 1436 // If the top activity is the resumed one, nothing to do. 1437 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1438 mStackSupervisor.allResumedActivitiesComplete()) { 1439 // Make sure we have executed any pending transitions, since there 1440 // should be nothing left to do at this point. 1441 mWindowManager.executeAppTransition(); 1442 mNoAnimActivities.clear(); 1443 ActivityOptions.abort(options); 1444 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1445 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1446 return false; 1447 } 1448 1449 final TaskRecord nextTask = next.task; 1450 if (prevTask != null && prevTask.stack == this && 1451 prevTask.isOverHomeStack() && prev.finishing && prev.frontOfTask) { 1452 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1453 if (prevTask == nextTask) { 1454 prevTask.setFrontOfTask(); 1455 } else if (prevTask != topTask()) { 1456 // This task is going away but it was supposed to return to the home stack. 1457 // Now the task above it has to return to the home task instead. 1458 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1459 mTaskHistory.get(taskNdx).setTaskToReturnTo(HOME_ACTIVITY_TYPE); 1460 } else { 1461 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1462 "resumeTopActivityLocked: Launching home next"); 1463 // Only resume home if on home display 1464 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1465 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1466 return isOnHomeDisplay() && 1467 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1468 } 1469 } 1470 1471 // If we are sleeping, and there is no resumed activity, and the top 1472 // activity is paused, well that is the state we want. 1473 if (mService.isSleepingOrShuttingDown() 1474 && mLastPausedActivity == next 1475 && mStackSupervisor.allPausedActivitiesComplete()) { 1476 // Make sure we have executed any pending transitions, since there 1477 // should be nothing left to do at this point. 1478 mWindowManager.executeAppTransition(); 1479 mNoAnimActivities.clear(); 1480 ActivityOptions.abort(options); 1481 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1482 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1483 return false; 1484 } 1485 1486 // Make sure that the user who owns this activity is started. If not, 1487 // we will just leave it as is because someone should be bringing 1488 // another user's activities to the top of the stack. 1489 if (mService.mStartedUsers.get(next.userId) == null) { 1490 Slog.w(TAG, "Skipping resume of top activity " + next 1491 + ": user " + next.userId + " is stopped"); 1492 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1493 return false; 1494 } 1495 1496 // The activity may be waiting for stop, but that is no longer 1497 // appropriate for it. 1498 mStackSupervisor.mStoppingActivities.remove(next); 1499 mStackSupervisor.mGoingToSleepActivities.remove(next); 1500 next.sleeping = false; 1501 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1502 1503 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1504 1505 // If we are currently pausing an activity, then don't do anything 1506 // until that is done. 1507 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1508 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1509 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1510 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1511 return false; 1512 } 1513 1514 // Okay we are now going to start a switch, to 'next'. We may first 1515 // have to pause the current activity, but this is an important point 1516 // where we have decided to go to 'next' so keep track of that. 1517 // XXX "App Redirected" dialog is getting too many false positives 1518 // at this point, so turn off for now. 1519 if (false) { 1520 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1521 long now = SystemClock.uptimeMillis(); 1522 final boolean inTime = mLastStartedActivity.startTime != 0 1523 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1524 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1525 final int nextUid = next.info.applicationInfo.uid; 1526 if (inTime && lastUid != nextUid 1527 && lastUid != next.launchedFromUid 1528 && mService.checkPermission( 1529 android.Manifest.permission.STOP_APP_SWITCHES, 1530 -1, next.launchedFromUid) 1531 != PackageManager.PERMISSION_GRANTED) { 1532 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1533 } else { 1534 next.startTime = now; 1535 mLastStartedActivity = next; 1536 } 1537 } else { 1538 next.startTime = SystemClock.uptimeMillis(); 1539 mLastStartedActivity = next; 1540 } 1541 } 1542 1543 // We need to start pausing the current activity so the top one 1544 // can be resumed... 1545 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1546 if (mResumedActivity != null) { 1547 pausing = true; 1548 startPausingLocked(userLeaving, false); 1549 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1550 } 1551 if (pausing) { 1552 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1553 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1554 // At this point we want to put the upcoming activity's process 1555 // at the top of the LRU list, since we know we will be needing it 1556 // very soon and it would be a waste to let it get killed if it 1557 // happens to be sitting towards the end. 1558 if (next.app != null && next.app.thread != null) { 1559 mService.updateLruProcessLocked(next.app, true, null); 1560 } 1561 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1562 return true; 1563 } 1564 1565 // If the most recent activity was noHistory but was only stopped rather 1566 // than stopped+finished because the device went to sleep, we need to make 1567 // sure to finish it as we're making a new activity topmost. 1568 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1569 !mLastNoHistoryActivity.finishing) { 1570 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1571 " on new resume"); 1572 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1573 null, "no-history", false); 1574 mLastNoHistoryActivity = null; 1575 } 1576 1577 if (prev != null && prev != next) { 1578 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1579 prev.waitingVisible = true; 1580 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1581 if (DEBUG_SWITCH) Slog.v( 1582 TAG, "Resuming top, waiting visible to hide: " + prev); 1583 } else { 1584 // The next activity is already visible, so hide the previous 1585 // activity's windows right now so we can show the new one ASAP. 1586 // We only do this if the previous is finishing, which should mean 1587 // it is on top of the one being resumed so hiding it quickly 1588 // is good. Otherwise, we want to do the normal route of allowing 1589 // the resumed activity to be shown so we can decide if the 1590 // previous should actually be hidden depending on whether the 1591 // new one is found to be full-screen or not. 1592 if (prev.finishing) { 1593 mWindowManager.setAppVisibility(prev.appToken, false); 1594 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1595 + prev + ", waitingVisible=" 1596 + (prev != null ? prev.waitingVisible : null) 1597 + ", nowVisible=" + next.nowVisible); 1598 } else { 1599 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1600 + prev + ", waitingVisible=" 1601 + (prev != null ? prev.waitingVisible : null) 1602 + ", nowVisible=" + next.nowVisible); 1603 } 1604 } 1605 } 1606 1607 // Launching this app's activity, make sure the app is no longer 1608 // considered stopped. 1609 try { 1610 AppGlobals.getPackageManager().setPackageStoppedState( 1611 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1612 } catch (RemoteException e1) { 1613 } catch (IllegalArgumentException e) { 1614 Slog.w(TAG, "Failed trying to unstop package " 1615 + next.packageName + ": " + e); 1616 } 1617 1618 // We are starting up the next activity, so tell the window manager 1619 // that the previous one will be hidden soon. This way it can know 1620 // to ignore it when computing the desired screen orientation. 1621 boolean anim = true; 1622 if (prev != null) { 1623 if (prev.finishing) { 1624 if (DEBUG_TRANSITION) Slog.v(TAG, 1625 "Prepare close transition: prev=" + prev); 1626 if (mNoAnimActivities.contains(prev)) { 1627 anim = false; 1628 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1629 } else { 1630 mWindowManager.prepareAppTransition(prev.task == next.task 1631 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1632 : AppTransition.TRANSIT_TASK_CLOSE, false); 1633 } 1634 mWindowManager.setAppWillBeHidden(prev.appToken); 1635 mWindowManager.setAppVisibility(prev.appToken, false); 1636 } else { 1637 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1638 if (mNoAnimActivities.contains(next)) { 1639 anim = false; 1640 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1641 } else { 1642 mWindowManager.prepareAppTransition(prev.task == next.task 1643 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1644 : next.mLaunchTaskBehind 1645 ? AppTransition.TRANSIT_TASK_OPEN_BEHIND 1646 : AppTransition.TRANSIT_TASK_OPEN, false); 1647 } 1648 } 1649 if (false) { 1650 mWindowManager.setAppWillBeHidden(prev.appToken); 1651 mWindowManager.setAppVisibility(prev.appToken, false); 1652 } 1653 } else { 1654 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1655 if (mNoAnimActivities.contains(next)) { 1656 anim = false; 1657 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1658 } else { 1659 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1660 } 1661 } 1662 1663 Bundle resumeAnimOptions = null; 1664 if (anim) { 1665 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1666 if (opts != null) { 1667 resumeAnimOptions = opts.toBundle(); 1668 } 1669 next.applyOptionsLocked(); 1670 } else { 1671 next.clearOptionsLocked(); 1672 } 1673 1674 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1675 if (next.app != null && next.app.thread != null) { 1676 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1677 1678 // This activity is now becoming visible. 1679 mWindowManager.setAppVisibility(next.appToken, true); 1680 1681 // schedule launch ticks to collect information about slow apps. 1682 next.startLaunchTickingLocked(); 1683 1684 ActivityRecord lastResumedActivity = 1685 lastStack == null ? null :lastStack.mResumedActivity; 1686 ActivityState lastState = next.state; 1687 1688 mService.updateCpuStats(); 1689 1690 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1691 next.state = ActivityState.RESUMED; 1692 mResumedActivity = next; 1693 next.task.touchActiveTime(); 1694 mService.addRecentTaskLocked(next.task); 1695 mService.updateLruProcessLocked(next.app, true, null); 1696 updateLRUListLocked(next); 1697 mService.updateOomAdjLocked(); 1698 1699 // Have the window manager re-evaluate the orientation of 1700 // the screen based on the new activity order. 1701 boolean notUpdated = true; 1702 if (mStackSupervisor.isFrontStack(this)) { 1703 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1704 mService.mConfiguration, 1705 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1706 if (config != null) { 1707 next.frozenBeforeDestroy = true; 1708 } 1709 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1710 } 1711 1712 if (notUpdated) { 1713 // The configuration update wasn't able to keep the existing 1714 // instance of the activity, and instead started a new one. 1715 // We should be all done, but let's just make sure our activity 1716 // is still at the top and schedule another run if something 1717 // weird happened. 1718 ActivityRecord nextNext = topRunningActivityLocked(null); 1719 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1720 "Activity config changed during resume: " + next 1721 + ", new next: " + nextNext); 1722 if (nextNext != next) { 1723 // Do over! 1724 mStackSupervisor.scheduleResumeTopActivities(); 1725 } 1726 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1727 mNoAnimActivities.clear(); 1728 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1729 return true; 1730 } 1731 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1732 return false; 1733 } 1734 1735 try { 1736 // Deliver all pending results. 1737 ArrayList<ResultInfo> a = next.results; 1738 if (a != null) { 1739 final int N = a.size(); 1740 if (!next.finishing && N > 0) { 1741 if (DEBUG_RESULTS) Slog.v( 1742 TAG, "Delivering results to " + next 1743 + ": " + a); 1744 next.app.thread.scheduleSendResult(next.appToken, a); 1745 } 1746 } 1747 1748 if (next.newIntents != null) { 1749 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1750 } 1751 1752 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1753 next.userId, System.identityHashCode(next), 1754 next.task.taskId, next.shortComponentName); 1755 1756 next.sleeping = false; 1757 mService.showAskCompatModeDialogLocked(next); 1758 next.app.pendingUiClean = true; 1759 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1760 next.clearOptionsLocked(); 1761 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1762 mService.isNextTransitionForward(), resumeAnimOptions); 1763 1764 mStackSupervisor.checkReadyForSleepLocked(); 1765 1766 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1767 } catch (Exception e) { 1768 // Whoops, need to restart this activity! 1769 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1770 + lastState + ": " + next); 1771 next.state = lastState; 1772 if (lastStack != null) { 1773 lastStack.mResumedActivity = lastResumedActivity; 1774 } 1775 Slog.i(TAG, "Restarting because process died: " + next); 1776 if (!next.hasBeenLaunched) { 1777 next.hasBeenLaunched = true; 1778 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1779 mStackSupervisor.isFrontStack(lastStack)) { 1780 mWindowManager.setAppStartingWindow( 1781 next.appToken, next.packageName, next.theme, 1782 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1783 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1784 next.windowFlags, null, true); 1785 } 1786 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1787 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1788 return true; 1789 } 1790 1791 // From this point on, if something goes wrong there is no way 1792 // to recover the activity. 1793 try { 1794 next.visible = true; 1795 completeResumeLocked(next); 1796 } catch (Exception e) { 1797 // If any exception gets thrown, toss away this 1798 // activity and try the next one. 1799 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1800 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1801 "resume-exception", true); 1802 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1803 return true; 1804 } 1805 next.stopped = false; 1806 1807 } else { 1808 // Whoops, need to restart this activity! 1809 if (!next.hasBeenLaunched) { 1810 next.hasBeenLaunched = true; 1811 } else { 1812 if (SHOW_APP_STARTING_PREVIEW) { 1813 mWindowManager.setAppStartingWindow( 1814 next.appToken, next.packageName, next.theme, 1815 mService.compatibilityInfoForPackageLocked( 1816 next.info.applicationInfo), 1817 next.nonLocalizedLabel, 1818 next.labelRes, next.icon, next.logo, next.windowFlags, 1819 null, true); 1820 } 1821 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1822 } 1823 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1824 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1825 } 1826 1827 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1828 return true; 1829 } 1830 1831 private void insertTaskAtTop(TaskRecord task) { 1832 // If this is being moved to the top by another activity or being launched from the home 1833 // activity, set mOnTopOfHome accordingly. 1834 if (isOnHomeDisplay()) { 1835 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1836 final boolean fromHome = lastStack.isHomeStack(); 1837 if (!isHomeStack() && (fromHome || topTask() != task)) { 1838 task.setTaskToReturnTo(fromHome 1839 ? lastStack.topTask() == null 1840 ? HOME_ACTIVITY_TYPE 1841 : lastStack.topTask().taskType 1842 : APPLICATION_ACTIVITY_TYPE); 1843 } 1844 } else { 1845 task.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 1846 } 1847 1848 mTaskHistory.remove(task); 1849 // Now put task at top. 1850 int taskNdx = mTaskHistory.size(); 1851 if (!isCurrentProfileLocked(task.userId)) { 1852 // Put non-current user tasks below current user tasks. 1853 while (--taskNdx >= 0) { 1854 if (!isCurrentProfileLocked(mTaskHistory.get(taskNdx).userId)) { 1855 break; 1856 } 1857 } 1858 ++taskNdx; 1859 } 1860 mTaskHistory.add(taskNdx, task); 1861 updateTaskMovement(task, true); 1862 } 1863 1864 final void startActivityLocked(ActivityRecord r, boolean newTask, 1865 boolean doResume, boolean keepCurTransition, Bundle options) { 1866 TaskRecord rTask = r.task; 1867 final int taskId = rTask.taskId; 1868 // mLaunchTaskBehind tasks get placed at the back of the task stack. 1869 if (!r.mLaunchTaskBehind && (taskForIdLocked(taskId) == null || newTask)) { 1870 // Last activity in task had been removed or ActivityManagerService is reusing task. 1871 // Insert or replace. 1872 // Might not even be in. 1873 insertTaskAtTop(rTask); 1874 mWindowManager.moveTaskToTop(taskId); 1875 } 1876 TaskRecord task = null; 1877 if (!newTask) { 1878 // If starting in an existing task, find where that is... 1879 boolean startIt = true; 1880 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1881 task = mTaskHistory.get(taskNdx); 1882 if (task == r.task) { 1883 // Here it is! Now, if this is not yet visible to the 1884 // user, then just add it without starting; it will 1885 // get started when the user navigates back to it. 1886 if (!startIt) { 1887 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1888 + task, new RuntimeException("here").fillInStackTrace()); 1889 task.addActivityToTop(r); 1890 r.putInHistory(); 1891 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1892 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1893 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1894 r.userId, r.info.configChanges, task.voiceSession != null, 1895 r.mLaunchTaskBehind); 1896 if (VALIDATE_TOKENS) { 1897 validateAppTokensLocked(); 1898 } 1899 ActivityOptions.abort(options); 1900 return; 1901 } 1902 break; 1903 } else if (task.numFullscreen > 0) { 1904 startIt = false; 1905 } 1906 } 1907 } 1908 1909 // Place a new activity at top of stack, so it is next to interact 1910 // with the user. 1911 1912 // If we are not placing the new activity frontmost, we do not want 1913 // to deliver the onUserLeaving callback to the actual frontmost 1914 // activity 1915 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1916 mStackSupervisor.mUserLeaving = false; 1917 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1918 "startActivity() behind front, mUserLeaving=false"); 1919 } 1920 1921 task = r.task; 1922 1923 // Slot the activity into the history stack and proceed 1924 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1925 new RuntimeException("here").fillInStackTrace()); 1926 task.addActivityToTop(r); 1927 task.setFrontOfTask(); 1928 1929 r.putInHistory(); 1930 if (!isHomeStack() || numActivities() > 0) { 1931 // We want to show the starting preview window if we are 1932 // switching to a new task, or the next activity's process is 1933 // not currently running. 1934 boolean showStartingIcon = newTask; 1935 ProcessRecord proc = r.app; 1936 if (proc == null) { 1937 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1938 } 1939 if (proc == null || proc.thread == null) { 1940 showStartingIcon = true; 1941 } 1942 if (DEBUG_TRANSITION) Slog.v(TAG, 1943 "Prepare open transition: starting " + r); 1944 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1945 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1946 mNoAnimActivities.add(r); 1947 } else { 1948 mWindowManager.prepareAppTransition(newTask 1949 ? r.mLaunchTaskBehind 1950 ? AppTransition.TRANSIT_TASK_OPEN_BEHIND 1951 : AppTransition.TRANSIT_TASK_OPEN 1952 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1953 mNoAnimActivities.remove(r); 1954 } 1955 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1956 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1957 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1958 r.info.configChanges, task.voiceSession != null, r.mLaunchTaskBehind); 1959 boolean doShow = true; 1960 if (newTask) { 1961 // Even though this activity is starting fresh, we still need 1962 // to reset it to make sure we apply affinities to move any 1963 // existing activities from other tasks in to it. 1964 // If the caller has requested that the target task be 1965 // reset, then do so. 1966 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1967 resetTaskIfNeededLocked(r, r); 1968 doShow = topRunningNonDelayedActivityLocked(null) == r; 1969 } 1970 } else if (options != null && new ActivityOptions(options).getAnimationType() 1971 == ActivityOptions.ANIM_SCENE_TRANSITION) { 1972 doShow = false; 1973 } 1974 if (r.mLaunchTaskBehind) { 1975 // Don't do a starting window for mLaunchTaskBehind. More importantly make sure we 1976 // tell WindowManager that r is visible even though it is at the back of the stack. 1977 mWindowManager.setAppVisibility(r.appToken, true); 1978 ensureActivitiesVisibleLocked(null, 0); 1979 } else if (SHOW_APP_STARTING_PREVIEW && doShow) { 1980 // Figure out if we are transitioning from another activity that is 1981 // "has the same starting icon" as the next one. This allows the 1982 // window manager to keep the previous window it had previously 1983 // created, if it still had one. 1984 ActivityRecord prev = mResumedActivity; 1985 if (prev != null) { 1986 // We don't want to reuse the previous starting preview if: 1987 // (1) The current activity is in a different task. 1988 if (prev.task != r.task) { 1989 prev = null; 1990 } 1991 // (2) The current activity is already displayed. 1992 else if (prev.nowVisible) { 1993 prev = null; 1994 } 1995 } 1996 mWindowManager.setAppStartingWindow( 1997 r.appToken, r.packageName, r.theme, 1998 mService.compatibilityInfoForPackageLocked( 1999 r.info.applicationInfo), r.nonLocalizedLabel, 2000 r.labelRes, r.icon, r.logo, r.windowFlags, 2001 prev != null ? prev.appToken : null, showStartingIcon); 2002 r.mStartingWindowShown = true; 2003 } 2004 } else { 2005 // If this is the first activity, don't do any fancy animations, 2006 // because there is nothing for it to animate on top of. 2007 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 2008 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 2009 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 2010 r.info.configChanges, task.voiceSession != null, r.mLaunchTaskBehind); 2011 ActivityOptions.abort(options); 2012 options = null; 2013 } 2014 if (VALIDATE_TOKENS) { 2015 validateAppTokensLocked(); 2016 } 2017 2018 if (doResume) { 2019 mStackSupervisor.resumeTopActivitiesLocked(this, r, options); 2020 } 2021 } 2022 2023 final void validateAppTokensLocked() { 2024 mValidateAppTokens.clear(); 2025 mValidateAppTokens.ensureCapacity(numActivities()); 2026 final int numTasks = mTaskHistory.size(); 2027 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 2028 TaskRecord task = mTaskHistory.get(taskNdx); 2029 final ArrayList<ActivityRecord> activities = task.mActivities; 2030 if (activities.isEmpty()) { 2031 continue; 2032 } 2033 TaskGroup group = new TaskGroup(); 2034 group.taskId = task.taskId; 2035 mValidateAppTokens.add(group); 2036 final int numActivities = activities.size(); 2037 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 2038 final ActivityRecord r = activities.get(activityNdx); 2039 group.tokens.add(r.appToken); 2040 } 2041 } 2042 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 2043 } 2044 2045 /** 2046 * Perform a reset of the given task, if needed as part of launching it. 2047 * Returns the new HistoryRecord at the top of the task. 2048 */ 2049 /** 2050 * Helper method for #resetTaskIfNeededLocked. 2051 * We are inside of the task being reset... we'll either finish this activity, push it out 2052 * for another task, or leave it as-is. 2053 * @param task The task containing the Activity (taskTop) that might be reset. 2054 * @param forceReset 2055 * @return An ActivityOptions that needs to be processed. 2056 */ 2057 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 2058 ActivityOptions topOptions = null; 2059 2060 int replyChainEnd = -1; 2061 boolean canMoveOptions = true; 2062 2063 // We only do this for activities that are not the root of the task (since if we finish 2064 // the root, we may no longer have the task!). 2065 final ArrayList<ActivityRecord> activities = task.mActivities; 2066 final int numActivities = activities.size(); 2067 final int rootActivityNdx = task.findEffectiveRootIndex(); 2068 for (int i = numActivities - 1; i > rootActivityNdx; --i ) { 2069 ActivityRecord target = activities.get(i); 2070 2071 final int flags = target.info.flags; 2072 final boolean finishOnTaskLaunch = 2073 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2074 final boolean allowTaskReparenting = 2075 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2076 final boolean clearWhenTaskReset = 2077 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2078 2079 if (!finishOnTaskLaunch 2080 && !clearWhenTaskReset 2081 && target.resultTo != null) { 2082 // If this activity is sending a reply to a previous 2083 // activity, we can't do anything with it now until 2084 // we reach the start of the reply chain. 2085 // XXX note that we are assuming the result is always 2086 // to the previous activity, which is almost always 2087 // the case but we really shouldn't count on. 2088 if (replyChainEnd < 0) { 2089 replyChainEnd = i; 2090 } 2091 } else if (!finishOnTaskLaunch 2092 && !clearWhenTaskReset 2093 && allowTaskReparenting 2094 && target.taskAffinity != null 2095 && !target.taskAffinity.equals(task.affinity)) { 2096 // If this activity has an affinity for another 2097 // task, then we need to move it out of here. We will 2098 // move it as far out of the way as possible, to the 2099 // bottom of the activity stack. This also keeps it 2100 // correctly ordered with any activities we previously 2101 // moved. 2102 final TaskRecord targetTask; 2103 final ActivityRecord bottom = 2104 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2105 mTaskHistory.get(0).mActivities.get(0) : null; 2106 if (bottom != null && target.taskAffinity != null 2107 && target.taskAffinity.equals(bottom.task.affinity)) { 2108 // If the activity currently at the bottom has the 2109 // same task affinity as the one we are moving, 2110 // then merge it into the same task. 2111 targetTask = bottom.task; 2112 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2113 + " out to bottom task " + bottom.task); 2114 } else { 2115 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2116 null, null, null, false); 2117 targetTask.affinityIntent = target.intent; 2118 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2119 + " out to new task " + target.task); 2120 } 2121 2122 final int targetTaskId = targetTask.taskId; 2123 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2124 2125 boolean noOptions = canMoveOptions; 2126 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2127 for (int srcPos = start; srcPos >= i; --srcPos) { 2128 final ActivityRecord p = activities.get(srcPos); 2129 if (p.finishing) { 2130 continue; 2131 } 2132 2133 canMoveOptions = false; 2134 if (noOptions && topOptions == null) { 2135 topOptions = p.takeOptionsLocked(); 2136 if (topOptions != null) { 2137 noOptions = false; 2138 } 2139 } 2140 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2141 + task + " adding to task=" + targetTask 2142 + " Callers=" + Debug.getCallers(4)); 2143 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2144 + " out to target's task " + target.task); 2145 p.setTask(targetTask, null); 2146 targetTask.addActivityAtBottom(p); 2147 2148 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2149 } 2150 2151 mWindowManager.moveTaskToBottom(targetTaskId); 2152 if (VALIDATE_TOKENS) { 2153 validateAppTokensLocked(); 2154 } 2155 2156 replyChainEnd = -1; 2157 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2158 // If the activity should just be removed -- either 2159 // because it asks for it, or the task should be 2160 // cleared -- then finish it and anything that is 2161 // part of its reply chain. 2162 int end; 2163 if (clearWhenTaskReset) { 2164 // In this case, we want to finish this activity 2165 // and everything above it, so be sneaky and pretend 2166 // like these are all in the reply chain. 2167 end = numActivities - 1; 2168 } else if (replyChainEnd < 0) { 2169 end = i; 2170 } else { 2171 end = replyChainEnd; 2172 } 2173 boolean noOptions = canMoveOptions; 2174 for (int srcPos = i; srcPos <= end; srcPos++) { 2175 ActivityRecord p = activities.get(srcPos); 2176 if (p.finishing) { 2177 continue; 2178 } 2179 canMoveOptions = false; 2180 if (noOptions && topOptions == null) { 2181 topOptions = p.takeOptionsLocked(); 2182 if (topOptions != null) { 2183 noOptions = false; 2184 } 2185 } 2186 if (DEBUG_TASKS) Slog.w(TAG, 2187 "resetTaskIntendedTask: calling finishActivity on " + p); 2188 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2189 end--; 2190 srcPos--; 2191 } 2192 } 2193 replyChainEnd = -1; 2194 } else { 2195 // If we were in the middle of a chain, well the 2196 // activity that started it all doesn't want anything 2197 // special, so leave it all as-is. 2198 replyChainEnd = -1; 2199 } 2200 } 2201 2202 return topOptions; 2203 } 2204 2205 /** 2206 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2207 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2208 * @param affinityTask The task we are looking for an affinity to. 2209 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2210 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2211 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2212 */ 2213 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2214 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2215 int replyChainEnd = -1; 2216 final int taskId = task.taskId; 2217 final String taskAffinity = task.affinity; 2218 2219 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2220 final int numActivities = activities.size(); 2221 final int rootActivityNdx = affinityTask.findEffectiveRootIndex(); 2222 2223 // Do not operate on or below the effective root Activity. 2224 for (int i = numActivities - 1; i > rootActivityNdx; --i) { 2225 ActivityRecord target = activities.get(i); 2226 2227 final int flags = target.info.flags; 2228 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2229 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2230 2231 if (target.resultTo != null) { 2232 // If this activity is sending a reply to a previous 2233 // activity, we can't do anything with it now until 2234 // we reach the start of the reply chain. 2235 // XXX note that we are assuming the result is always 2236 // to the previous activity, which is almost always 2237 // the case but we really shouldn't count on. 2238 if (replyChainEnd < 0) { 2239 replyChainEnd = i; 2240 } 2241 } else if (topTaskIsHigher 2242 && allowTaskReparenting 2243 && taskAffinity != null 2244 && taskAffinity.equals(target.taskAffinity)) { 2245 // This activity has an affinity for our task. Either remove it if we are 2246 // clearing or move it over to our task. Note that 2247 // we currently punt on the case where we are resetting a 2248 // task that is not at the top but who has activities above 2249 // with an affinity to it... this is really not a normal 2250 // case, and we will need to later pull that task to the front 2251 // and usually at that point we will do the reset and pick 2252 // up those remaining activities. (This only happens if 2253 // someone starts an activity in a new task from an activity 2254 // in a task that is not currently on top.) 2255 if (forceReset || finishOnTaskLaunch) { 2256 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2257 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2258 for (int srcPos = start; srcPos >= i; --srcPos) { 2259 final ActivityRecord p = activities.get(srcPos); 2260 if (p.finishing) { 2261 continue; 2262 } 2263 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2264 } 2265 } else { 2266 if (taskInsertionPoint < 0) { 2267 taskInsertionPoint = task.mActivities.size(); 2268 2269 } 2270 2271 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2272 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2273 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2274 for (int srcPos = start; srcPos >= i; --srcPos) { 2275 final ActivityRecord p = activities.get(srcPos); 2276 p.setTask(task, null); 2277 task.addActivityAtIndex(taskInsertionPoint, p); 2278 2279 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2280 + " to stack at " + task, 2281 new RuntimeException("here").fillInStackTrace()); 2282 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2283 + " in to resetting task " + task); 2284 mWindowManager.setAppGroupId(p.appToken, taskId); 2285 } 2286 mWindowManager.moveTaskToTop(taskId); 2287 if (VALIDATE_TOKENS) { 2288 validateAppTokensLocked(); 2289 } 2290 2291 // Now we've moved it in to place... but what if this is 2292 // a singleTop activity and we have put it on top of another 2293 // instance of the same activity? Then we drop the instance 2294 // below so it remains singleTop. 2295 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2296 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2297 int targetNdx = taskActivities.indexOf(target); 2298 if (targetNdx > 0) { 2299 ActivityRecord p = taskActivities.get(targetNdx - 1); 2300 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2301 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2302 false); 2303 } 2304 } 2305 } 2306 } 2307 2308 replyChainEnd = -1; 2309 } 2310 } 2311 return taskInsertionPoint; 2312 } 2313 2314 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2315 ActivityRecord newActivity) { 2316 boolean forceReset = 2317 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2318 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2319 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2320 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2321 forceReset = true; 2322 } 2323 } 2324 2325 final TaskRecord task = taskTop.task; 2326 2327 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2328 * for remaining tasks. Used for later tasks to reparent to task. */ 2329 boolean taskFound = false; 2330 2331 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2332 ActivityOptions topOptions = null; 2333 2334 // Preserve the location for reparenting in the new task. 2335 int reparentInsertionPoint = -1; 2336 2337 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2338 final TaskRecord targetTask = mTaskHistory.get(i); 2339 2340 if (targetTask == task) { 2341 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2342 taskFound = true; 2343 } else { 2344 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2345 taskFound, forceReset, reparentInsertionPoint); 2346 } 2347 } 2348 2349 int taskNdx = mTaskHistory.indexOf(task); 2350 do { 2351 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2352 } while (taskTop == null && taskNdx >= 0); 2353 2354 if (topOptions != null) { 2355 // If we got some ActivityOptions from an activity on top that 2356 // was removed from the task, propagate them to the new real top. 2357 if (taskTop != null) { 2358 taskTop.updateOptionsLocked(topOptions); 2359 } else { 2360 topOptions.abort(); 2361 } 2362 } 2363 2364 return taskTop; 2365 } 2366 2367 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2368 String resultWho, int requestCode, int resultCode, Intent data) { 2369 2370 if (callingUid > 0) { 2371 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2372 data, r.getUriPermissionsLocked(), r.userId); 2373 } 2374 2375 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2376 + " : who=" + resultWho + " req=" + requestCode 2377 + " res=" + resultCode + " data=" + data); 2378 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2379 try { 2380 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2381 list.add(new ResultInfo(resultWho, requestCode, 2382 resultCode, data)); 2383 r.app.thread.scheduleSendResult(r.appToken, list); 2384 return; 2385 } catch (Exception e) { 2386 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2387 } 2388 } 2389 2390 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2391 } 2392 2393 private void adjustFocusedActivityLocked(ActivityRecord r) { 2394 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2395 ActivityRecord next = topRunningActivityLocked(null); 2396 if (next != r) { 2397 final TaskRecord task = r.task; 2398 if (r.frontOfTask && task == topTask() && task.isOverHomeStack()) { 2399 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 2400 } 2401 } 2402 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2403 if (top != null) { 2404 mService.setFocusedActivityLocked(top); 2405 } 2406 } 2407 } 2408 2409 final void stopActivityLocked(ActivityRecord r) { 2410 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2411 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2412 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2413 if (!r.finishing) { 2414 if (!mService.isSleeping()) { 2415 if (DEBUG_STATES) { 2416 Slog.d(TAG, "no-history finish of " + r); 2417 } 2418 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2419 "no-history", false); 2420 } else { 2421 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2422 + " on stop because we're just sleeping"); 2423 } 2424 } 2425 } 2426 2427 if (r.app != null && r.app.thread != null) { 2428 adjustFocusedActivityLocked(r); 2429 r.resumeKeyDispatchingLocked(); 2430 try { 2431 r.stopped = false; 2432 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2433 + " (stop requested)"); 2434 r.state = ActivityState.STOPPING; 2435 if (DEBUG_VISBILITY) Slog.v( 2436 TAG, "Stopping visible=" + r.visible + " for " + r); 2437 if (!r.visible) { 2438 mWindowManager.setAppVisibility(r.appToken, false); 2439 } 2440 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2441 if (mService.isSleepingOrShuttingDown()) { 2442 r.setSleeping(true); 2443 } 2444 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2445 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2446 } catch (Exception e) { 2447 // Maybe just ignore exceptions here... if the process 2448 // has crashed, our death notification will clean things 2449 // up. 2450 Slog.w(TAG, "Exception thrown during pause", e); 2451 // Just in case, assume it to be stopped. 2452 r.stopped = true; 2453 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2454 r.state = ActivityState.STOPPED; 2455 if (r.configDestroy) { 2456 destroyActivityLocked(r, true, "stop-except"); 2457 } 2458 } 2459 } 2460 } 2461 2462 /** 2463 * @return Returns true if the activity is being finished, false if for 2464 * some reason it is being left as-is. 2465 */ 2466 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2467 Intent resultData, String reason, boolean oomAdj) { 2468 ActivityRecord r = isInStackLocked(token); 2469 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2470 TAG, "Finishing activity token=" + token + " r=" 2471 + ", result=" + resultCode + ", data=" + resultData 2472 + ", reason=" + reason); 2473 if (r == null) { 2474 return false; 2475 } 2476 2477 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2478 return true; 2479 } 2480 2481 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2482 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2483 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2484 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2485 ActivityRecord r = activities.get(activityNdx); 2486 if (r.resultTo == self && r.requestCode == requestCode) { 2487 if ((r.resultWho == null && resultWho == null) || 2488 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2489 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2490 false); 2491 } 2492 } 2493 } 2494 } 2495 mService.updateOomAdjLocked(); 2496 } 2497 2498 final void finishTopRunningActivityLocked(ProcessRecord app) { 2499 ActivityRecord r = topRunningActivityLocked(null); 2500 if (r != null && r.app == app) { 2501 // If the top running activity is from this crashing 2502 // process, then terminate it to avoid getting in a loop. 2503 Slog.w(TAG, " Force finishing activity " 2504 + r.intent.getComponent().flattenToShortString()); 2505 int taskNdx = mTaskHistory.indexOf(r.task); 2506 int activityNdx = r.task.mActivities.indexOf(r); 2507 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2508 // Also terminate any activities below it that aren't yet 2509 // stopped, to avoid a situation where one will get 2510 // re-start our crashing activity once it gets resumed again. 2511 --activityNdx; 2512 if (activityNdx < 0) { 2513 do { 2514 --taskNdx; 2515 if (taskNdx < 0) { 2516 break; 2517 } 2518 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2519 } while (activityNdx < 0); 2520 } 2521 if (activityNdx >= 0) { 2522 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2523 if (r.state == ActivityState.RESUMED 2524 || r.state == ActivityState.PAUSING 2525 || r.state == ActivityState.PAUSED) { 2526 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2527 Slog.w(TAG, " Force finishing activity " 2528 + r.intent.getComponent().flattenToShortString()); 2529 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2530 } 2531 } 2532 } 2533 } 2534 } 2535 2536 final void finishVoiceTask(IVoiceInteractionSession session) { 2537 IBinder sessionBinder = session.asBinder(); 2538 boolean didOne = false; 2539 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2540 TaskRecord tr = mTaskHistory.get(taskNdx); 2541 if (tr.voiceSession != null && tr.voiceSession.asBinder() == sessionBinder) { 2542 for (int activityNdx = tr.mActivities.size() - 1; activityNdx >= 0; --activityNdx) { 2543 ActivityRecord r = tr.mActivities.get(activityNdx); 2544 if (!r.finishing) { 2545 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "finish-voice", 2546 false); 2547 didOne = true; 2548 } 2549 } 2550 } 2551 } 2552 if (didOne) { 2553 mService.updateOomAdjLocked(); 2554 } 2555 } 2556 2557 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2558 ArrayList<ActivityRecord> activities = r.task.mActivities; 2559 for (int index = activities.indexOf(r); index >= 0; --index) { 2560 ActivityRecord cur = activities.get(index); 2561 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2562 break; 2563 } 2564 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2565 } 2566 return true; 2567 } 2568 2569 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2570 // send the result 2571 ActivityRecord resultTo = r.resultTo; 2572 if (resultTo != null) { 2573 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2574 + " who=" + r.resultWho + " req=" + r.requestCode 2575 + " res=" + resultCode + " data=" + resultData); 2576 if (resultTo.userId != r.userId) { 2577 if (resultData != null) { 2578 resultData.prepareToLeaveUser(r.userId); 2579 } 2580 } 2581 if (r.info.applicationInfo.uid > 0) { 2582 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2583 resultTo.packageName, resultData, 2584 resultTo.getUriPermissionsLocked(), resultTo.userId); 2585 } 2586 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2587 resultData); 2588 r.resultTo = null; 2589 } 2590 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2591 2592 // Make sure this HistoryRecord is not holding on to other resources, 2593 // because clients have remote IPC references to this object so we 2594 // can't assume that will go away and want to avoid circular IPC refs. 2595 r.results = null; 2596 r.pendingResults = null; 2597 r.newIntents = null; 2598 r.icicle = null; 2599 } 2600 2601 /** 2602 * @return Returns true if this activity has been removed from the history 2603 * list, or false if it is still in the list and will be removed later. 2604 */ 2605 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2606 String reason, boolean oomAdj) { 2607 if (r.finishing) { 2608 Slog.w(TAG, "Duplicate finish request for " + r); 2609 return false; 2610 } 2611 2612 r.makeFinishing(); 2613 final TaskRecord task = r.task; 2614 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2615 r.userId, System.identityHashCode(r), 2616 task.taskId, r.shortComponentName, reason); 2617 final ArrayList<ActivityRecord> activities = task.mActivities; 2618 final int index = activities.indexOf(r); 2619 if (index < (activities.size() - 1)) { 2620 task.setFrontOfTask(); 2621 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2622 // If the caller asked that this activity (and all above it) 2623 // be cleared when the task is reset, don't lose that information, 2624 // but propagate it up to the next activity. 2625 ActivityRecord next = activities.get(index+1); 2626 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2627 } 2628 } 2629 2630 r.pauseKeyDispatchingLocked(); 2631 2632 adjustFocusedActivityLocked(r); 2633 2634 finishActivityResultsLocked(r, resultCode, resultData); 2635 2636 if (mResumedActivity == r) { 2637 boolean endTask = index <= 0; 2638 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2639 "Prepare close transition: finishing " + r); 2640 mWindowManager.prepareAppTransition(endTask 2641 ? AppTransition.TRANSIT_TASK_CLOSE 2642 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2643 2644 // Tell window manager to prepare for this one to be removed. 2645 mWindowManager.setAppVisibility(r.appToken, false); 2646 2647 if (mPausingActivity == null) { 2648 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2649 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2650 startPausingLocked(false, false); 2651 } 2652 2653 if (endTask) { 2654 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2655 } 2656 } else if (r.state != ActivityState.PAUSING) { 2657 // If the activity is PAUSING, we will complete the finish once 2658 // it is done pausing; else we can just directly finish it here. 2659 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2660 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2661 } else { 2662 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2663 } 2664 2665 return false; 2666 } 2667 2668 static final int FINISH_IMMEDIATELY = 0; 2669 static final int FINISH_AFTER_PAUSE = 1; 2670 static final int FINISH_AFTER_VISIBLE = 2; 2671 2672 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2673 // First things first: if this activity is currently visible, 2674 // and the resumed activity is not yet visible, then hold off on 2675 // finishing until the resumed one becomes visible. 2676 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2677 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2678 mStackSupervisor.mStoppingActivities.add(r); 2679 if (mStackSupervisor.mStoppingActivities.size() > 3 2680 || r.frontOfTask && mTaskHistory.size() <= 1) { 2681 // If we already have a few activities waiting to stop, 2682 // then give up on things going idle and start clearing 2683 // them out. Or if r is the last of activity of the last task the stack 2684 // will be empty and must be cleared immediately. 2685 mStackSupervisor.scheduleIdleLocked(); 2686 } else { 2687 mStackSupervisor.checkReadyForSleepLocked(); 2688 } 2689 } 2690 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2691 + " (finish requested)"); 2692 r.state = ActivityState.STOPPING; 2693 if (oomAdj) { 2694 mService.updateOomAdjLocked(); 2695 } 2696 return r; 2697 } 2698 2699 // make sure the record is cleaned out of other places. 2700 mStackSupervisor.mStoppingActivities.remove(r); 2701 mStackSupervisor.mGoingToSleepActivities.remove(r); 2702 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2703 if (mResumedActivity == r) { 2704 mResumedActivity = null; 2705 } 2706 final ActivityState prevState = r.state; 2707 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2708 r.state = ActivityState.FINISHING; 2709 2710 if (mode == FINISH_IMMEDIATELY 2711 || prevState == ActivityState.STOPPED 2712 || prevState == ActivityState.INITIALIZING) { 2713 // If this activity is already stopped, we can just finish 2714 // it right now. 2715 r.makeFinishing(); 2716 boolean activityRemoved = destroyActivityLocked(r, true, "finish-imm"); 2717 if (activityRemoved) { 2718 mStackSupervisor.resumeTopActivitiesLocked(); 2719 } 2720 if (DEBUG_CONTAINERS) Slog.d(TAG, 2721 "destroyActivityLocked: finishCurrentActivityLocked r=" + r + 2722 " destroy returned removed=" + activityRemoved); 2723 return activityRemoved ? null : r; 2724 } 2725 2726 // Need to go through the full pause cycle to get this 2727 // activity into the stopped state and then finish it. 2728 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2729 mStackSupervisor.mFinishingActivities.add(r); 2730 r.resumeKeyDispatchingLocked(); 2731 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2732 return r; 2733 } 2734 2735 void finishAllActivitiesLocked() { 2736 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2737 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2738 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2739 final ActivityRecord r = activities.get(activityNdx); 2740 if (r.finishing) { 2741 continue; 2742 } 2743 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2744 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2745 } 2746 } 2747 } 2748 2749 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2750 Intent resultData) { 2751 final ActivityRecord srec = ActivityRecord.forToken(token); 2752 final TaskRecord task = srec.task; 2753 final ArrayList<ActivityRecord> activities = task.mActivities; 2754 final int start = activities.indexOf(srec); 2755 if (!mTaskHistory.contains(task) || (start < 0)) { 2756 return false; 2757 } 2758 int finishTo = start - 1; 2759 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2760 boolean foundParentInTask = false; 2761 final ComponentName dest = destIntent.getComponent(); 2762 if (start > 0 && dest != null) { 2763 for (int i = finishTo; i >= 0; i--) { 2764 ActivityRecord r = activities.get(i); 2765 if (r.info.packageName.equals(dest.getPackageName()) && 2766 r.info.name.equals(dest.getClassName())) { 2767 finishTo = i; 2768 parent = r; 2769 foundParentInTask = true; 2770 break; 2771 } 2772 } 2773 } 2774 2775 IActivityController controller = mService.mController; 2776 if (controller != null) { 2777 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2778 if (next != null) { 2779 // ask watcher if this is allowed 2780 boolean resumeOK = true; 2781 try { 2782 resumeOK = controller.activityResuming(next.packageName); 2783 } catch (RemoteException e) { 2784 mService.mController = null; 2785 Watchdog.getInstance().setActivityController(null); 2786 } 2787 2788 if (!resumeOK) { 2789 return false; 2790 } 2791 } 2792 } 2793 final long origId = Binder.clearCallingIdentity(); 2794 for (int i = start; i > finishTo; i--) { 2795 ActivityRecord r = activities.get(i); 2796 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2797 // Only return the supplied result for the first activity finished 2798 resultCode = Activity.RESULT_CANCELED; 2799 resultData = null; 2800 } 2801 2802 if (parent != null && foundParentInTask) { 2803 final int parentLaunchMode = parent.info.launchMode; 2804 final int destIntentFlags = destIntent.getFlags(); 2805 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2806 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2807 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2808 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2809 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2810 } else { 2811 try { 2812 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2813 destIntent.getComponent(), 0, srec.userId); 2814 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2815 null, aInfo, null, null, parent.appToken, null, 2816 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2817 0, null, true, null, null); 2818 foundParentInTask = res == ActivityManager.START_SUCCESS; 2819 } catch (RemoteException e) { 2820 foundParentInTask = false; 2821 } 2822 requestFinishActivityLocked(parent.appToken, resultCode, 2823 resultData, "navigate-up", true); 2824 } 2825 } 2826 Binder.restoreCallingIdentity(origId); 2827 return foundParentInTask; 2828 } 2829 /** 2830 * Perform the common clean-up of an activity record. This is called both 2831 * as part of destroyActivityLocked() (when destroying the client-side 2832 * representation) and cleaning things up as a result of its hosting 2833 * processing going away, in which case there is no remaining client-side 2834 * state to destroy so only the cleanup here is needed. 2835 */ 2836 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2837 boolean setState) { 2838 if (mResumedActivity == r) { 2839 mResumedActivity = null; 2840 } 2841 if (mPausingActivity == r) { 2842 mPausingActivity = null; 2843 } 2844 mService.clearFocusedActivity(r); 2845 2846 r.configDestroy = false; 2847 r.frozenBeforeDestroy = false; 2848 2849 if (setState) { 2850 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2851 r.state = ActivityState.DESTROYED; 2852 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2853 r.app = null; 2854 } 2855 2856 // Make sure this record is no longer in the pending finishes list. 2857 // This could happen, for example, if we are trimming activities 2858 // down to the max limit while they are still waiting to finish. 2859 mStackSupervisor.mFinishingActivities.remove(r); 2860 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2861 2862 // Remove any pending results. 2863 if (r.finishing && r.pendingResults != null) { 2864 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2865 PendingIntentRecord rec = apr.get(); 2866 if (rec != null) { 2867 mService.cancelIntentSenderLocked(rec, false); 2868 } 2869 } 2870 r.pendingResults = null; 2871 } 2872 2873 if (cleanServices) { 2874 cleanUpActivityServicesLocked(r); 2875 } 2876 2877 // Get rid of any pending idle timeouts. 2878 removeTimeoutsForActivityLocked(r); 2879 if (getMediaPlayer() == r) { 2880 mStackSupervisor.setMediaPlayingLocked(r, false); 2881 } 2882 } 2883 2884 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2885 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2886 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2887 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2888 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2889 r.finishLaunchTickingLocked(); 2890 } 2891 2892 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2893 mStackSupervisor.removeChildActivityContainers(r); 2894 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2895 r.makeFinishing(); 2896 if (DEBUG_ADD_REMOVE) { 2897 RuntimeException here = new RuntimeException("here"); 2898 here.fillInStackTrace(); 2899 Slog.i(TAG, "Removing activity " + r + " from stack"); 2900 } 2901 r.takeFromHistory(); 2902 removeTimeoutsForActivityLocked(r); 2903 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2904 r.state = ActivityState.DESTROYED; 2905 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2906 r.app = null; 2907 mWindowManager.removeAppToken(r.appToken); 2908 if (VALIDATE_TOKENS) { 2909 validateAppTokensLocked(); 2910 } 2911 final TaskRecord task = r.task; 2912 if (task != null && task.removeActivity(r)) { 2913 if (DEBUG_STACK) Slog.i(TAG, 2914 "removeActivityFromHistoryLocked: last activity removed from " + this); 2915 if (mStackSupervisor.isFrontStack(this) && task == topTask() && 2916 task.isOverHomeStack()) { 2917 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 2918 } 2919 removeTask(task); 2920 } 2921 cleanUpActivityServicesLocked(r); 2922 r.removeUriPermissionsLocked(); 2923 } 2924 2925 /** 2926 * Perform clean-up of service connections in an activity record. 2927 */ 2928 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2929 // Throw away any services that have been bound by this activity. 2930 if (r.connections != null) { 2931 Iterator<ConnectionRecord> it = r.connections.iterator(); 2932 while (it.hasNext()) { 2933 ConnectionRecord c = it.next(); 2934 mService.mServices.removeConnectionLocked(c, null, r); 2935 } 2936 r.connections = null; 2937 } 2938 } 2939 2940 final void scheduleDestroyActivities(ProcessRecord owner, String reason) { 2941 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2942 msg.obj = new ScheduleDestroyArgs(owner, reason); 2943 mHandler.sendMessage(msg); 2944 } 2945 2946 final void destroyActivitiesLocked(ProcessRecord owner, String reason) { 2947 boolean lastIsOpaque = false; 2948 boolean activityRemoved = false; 2949 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2950 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2951 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2952 final ActivityRecord r = activities.get(activityNdx); 2953 if (r.finishing) { 2954 continue; 2955 } 2956 if (r.fullscreen) { 2957 lastIsOpaque = true; 2958 } 2959 if (owner != null && r.app != owner) { 2960 continue; 2961 } 2962 if (!lastIsOpaque) { 2963 continue; 2964 } 2965 // We can destroy this one if we have its icicle saved and 2966 // it is not in the process of pausing/stopping/finishing. 2967 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2968 && r.haveState && !r.visible && r.stopped 2969 && r.state != ActivityState.DESTROYING 2970 && r.state != ActivityState.DESTROYED) { 2971 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2972 + " resumed=" + mResumedActivity 2973 + " pausing=" + mPausingActivity); 2974 if (destroyActivityLocked(r, true, reason)) { 2975 activityRemoved = true; 2976 } 2977 } 2978 } 2979 } 2980 if (activityRemoved) { 2981 mStackSupervisor.resumeTopActivitiesLocked(); 2982 } 2983 } 2984 2985 /** 2986 * Destroy the current CLIENT SIDE instance of an activity. This may be 2987 * called both when actually finishing an activity, or when performing 2988 * a configuration switch where we destroy the current client-side object 2989 * but then create a new client-side object for this same HistoryRecord. 2990 */ 2991 final boolean destroyActivityLocked(ActivityRecord r, boolean removeFromApp, String reason) { 2992 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2993 TAG, "Removing activity from " + reason + ": token=" + r 2994 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2995 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2996 r.userId, System.identityHashCode(r), 2997 r.task.taskId, r.shortComponentName, reason); 2998 2999 boolean removedFromHistory = false; 3000 3001 cleanUpActivityLocked(r, false, false); 3002 3003 final boolean hadApp = r.app != null; 3004 3005 if (hadApp) { 3006 if (removeFromApp) { 3007 r.app.activities.remove(r); 3008 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 3009 mService.mHeavyWeightProcess = null; 3010 mService.mHandler.sendEmptyMessage( 3011 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 3012 } 3013 if (r.app.activities.isEmpty()) { 3014 // No longer have activities, so update LRU list and oom adj. 3015 mService.updateLruProcessLocked(r.app, false, null); 3016 mService.updateOomAdjLocked(); 3017 } 3018 } 3019 3020 boolean skipDestroy = false; 3021 3022 try { 3023 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 3024 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 3025 r.configChangeFlags); 3026 } catch (Exception e) { 3027 // We can just ignore exceptions here... if the process 3028 // has crashed, our death notification will clean things 3029 // up. 3030 //Slog.w(TAG, "Exception thrown during finish", e); 3031 if (r.finishing) { 3032 removeActivityFromHistoryLocked(r); 3033 removedFromHistory = true; 3034 skipDestroy = true; 3035 } 3036 } 3037 3038 r.nowVisible = false; 3039 3040 // If the activity is finishing, we need to wait on removing it 3041 // from the list to give it a chance to do its cleanup. During 3042 // that time it may make calls back with its token so we need to 3043 // be able to find it on the list and so we don't want to remove 3044 // it from the list yet. Otherwise, we can just immediately put 3045 // it in the destroyed state since we are not removing it from the 3046 // list. 3047 if (r.finishing && !skipDestroy) { 3048 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 3049 + " (destroy requested)"); 3050 r.state = ActivityState.DESTROYING; 3051 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 3052 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 3053 } else { 3054 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 3055 r.state = ActivityState.DESTROYED; 3056 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3057 r.app = null; 3058 } 3059 } else { 3060 // remove this record from the history. 3061 if (r.finishing) { 3062 removeActivityFromHistoryLocked(r); 3063 removedFromHistory = true; 3064 } else { 3065 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 3066 r.state = ActivityState.DESTROYED; 3067 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3068 r.app = null; 3069 } 3070 } 3071 3072 r.configChangeFlags = 0; 3073 3074 if (!mLRUActivities.remove(r) && hadApp) { 3075 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 3076 } 3077 3078 return removedFromHistory; 3079 } 3080 3081 final void activityDestroyedLocked(IBinder token) { 3082 final long origId = Binder.clearCallingIdentity(); 3083 try { 3084 ActivityRecord r = ActivityRecord.forToken(token); 3085 if (r != null) { 3086 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3087 } 3088 if (DEBUG_CONTAINERS) Slog.d(TAG, "activityDestroyedLocked: r=" + r); 3089 3090 if (isInStackLocked(token) != null) { 3091 if (r.state == ActivityState.DESTROYING) { 3092 cleanUpActivityLocked(r, true, false); 3093 removeActivityFromHistoryLocked(r); 3094 } 3095 } 3096 mStackSupervisor.resumeTopActivitiesLocked(); 3097 } finally { 3098 Binder.restoreCallingIdentity(origId); 3099 } 3100 } 3101 3102 void releaseMediaResources() { 3103 if (isMediaPlaying() && !mHandler.hasMessages(STOP_MEDIA_PLAYING_TIMEOUT_MSG)) { 3104 final ActivityRecord r = getMediaPlayer(); 3105 if (DEBUG_STATES) Slog.d(TAG, "releaseMediaResources activtyDisplay=" + 3106 mActivityContainer.mActivityDisplay + " mediaPlayer=" + r + " app=" + r.app + 3107 " thread=" + r.app.thread); 3108 if (r != null && r.app != null && r.app.thread != null) { 3109 try { 3110 r.app.thread.scheduleStopMediaPlaying(r.appToken); 3111 } catch (RemoteException e) { 3112 } 3113 mHandler.sendEmptyMessageDelayed(STOP_MEDIA_PLAYING_TIMEOUT_MSG, 500); 3114 } else { 3115 Slog.e(TAG, "releaseMediaResources: activity " + r + " no longer running"); 3116 mediaResourcesReleased(r.appToken); 3117 } 3118 } 3119 } 3120 3121 final void mediaResourcesReleased(IBinder token) { 3122 mHandler.removeMessages(STOP_MEDIA_PLAYING_TIMEOUT_MSG); 3123 final ActivityRecord r = getMediaPlayer(); 3124 if (r != null) { 3125 mStackSupervisor.mStoppingActivities.add(r); 3126 setMediaPlayer(null); 3127 } 3128 mStackSupervisor.resumeTopActivitiesLocked(); 3129 } 3130 3131 boolean isMediaPlaying() { 3132 return isAttached() && mActivityContainer.mActivityDisplay.isMediaPlaying(); 3133 } 3134 3135 void setMediaPlayer(ActivityRecord r) { 3136 if (isAttached()) { 3137 mActivityContainer.mActivityDisplay.setMediaPlaying(r); 3138 } 3139 } 3140 3141 ActivityRecord getMediaPlayer() { 3142 return isAttached() ? mActivityContainer.mActivityDisplay.mMediaPlayingActivity : null; 3143 } 3144 3145 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3146 ProcessRecord app, String listName) { 3147 int i = list.size(); 3148 if (DEBUG_CLEANUP) Slog.v( 3149 TAG, "Removing app " + app + " from list " + listName 3150 + " with " + i + " entries"); 3151 while (i > 0) { 3152 i--; 3153 ActivityRecord r = list.get(i); 3154 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3155 if (r.app == app) { 3156 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3157 list.remove(i); 3158 removeTimeoutsForActivityLocked(r); 3159 } 3160 } 3161 } 3162 3163 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3164 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3165 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3166 "mStoppingActivities"); 3167 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3168 "mGoingToSleepActivities"); 3169 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3170 "mWaitingVisibleActivities"); 3171 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3172 "mFinishingActivities"); 3173 3174 boolean hasVisibleActivities = false; 3175 3176 // Clean out the history list. 3177 int i = numActivities(); 3178 if (DEBUG_CLEANUP) Slog.v( 3179 TAG, "Removing app " + app + " from history with " + i + " entries"); 3180 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3181 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3182 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3183 final ActivityRecord r = activities.get(activityNdx); 3184 --i; 3185 if (DEBUG_CLEANUP) Slog.v( 3186 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3187 if (r.app == app) { 3188 boolean remove; 3189 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3190 // Don't currently have state for the activity, or 3191 // it is finishing -- always remove it. 3192 remove = true; 3193 } else if (r.launchCount > 2 && 3194 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3195 // We have launched this activity too many times since it was 3196 // able to run, so give up and remove it. 3197 remove = true; 3198 } else { 3199 // The process may be gone, but the activity lives on! 3200 remove = false; 3201 } 3202 if (remove) { 3203 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3204 RuntimeException here = new RuntimeException("here"); 3205 here.fillInStackTrace(); 3206 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3207 + ": haveState=" + r.haveState 3208 + " stateNotNeeded=" + r.stateNotNeeded 3209 + " finishing=" + r.finishing 3210 + " state=" + r.state, here); 3211 } 3212 if (!r.finishing) { 3213 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3214 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3215 r.userId, System.identityHashCode(r), 3216 r.task.taskId, r.shortComponentName, 3217 "proc died without state saved"); 3218 if (r.state == ActivityState.RESUMED) { 3219 mService.updateUsageStats(r, false); 3220 } 3221 } 3222 removeActivityFromHistoryLocked(r); 3223 3224 } else { 3225 // We have the current state for this activity, so 3226 // it can be restarted later when needed. 3227 if (localLOGV) Slog.v( 3228 TAG, "Keeping entry, setting app to null"); 3229 if (r.visible) { 3230 hasVisibleActivities = true; 3231 } 3232 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3233 + r); 3234 r.app = null; 3235 r.nowVisible = false; 3236 if (!r.haveState) { 3237 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3238 "App died, clearing saved state of " + r); 3239 r.icicle = null; 3240 } 3241 } 3242 3243 cleanUpActivityLocked(r, true, true); 3244 } 3245 } 3246 } 3247 3248 return hasVisibleActivities; 3249 } 3250 3251 final void updateTransitLocked(int transit, Bundle options) { 3252 if (options != null) { 3253 ActivityRecord r = topRunningActivityLocked(null); 3254 if (r != null && r.state != ActivityState.RESUMED) { 3255 r.updateOptionsLocked(options); 3256 } else { 3257 ActivityOptions.abort(options); 3258 } 3259 } 3260 mWindowManager.prepareAppTransition(transit, false); 3261 } 3262 3263 void updateTaskMovement(TaskRecord task, boolean toFront) { 3264 if (task.isPersistable) { 3265 task.mLastTimeMoved = System.currentTimeMillis(); 3266 // Sign is used to keep tasks sorted when persisted. Tasks sent to the bottom most 3267 // recently will be most negative, tasks sent to the bottom before that will be less 3268 // negative. Similarly for recent tasks moved to the top which will be most positive. 3269 if (!toFront) { 3270 task.mLastTimeMoved *= -1; 3271 } 3272 } 3273 } 3274 3275 void moveHomeStackTaskToTop(int homeStackTaskType) { 3276 final int top = mTaskHistory.size() - 1; 3277 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3278 final TaskRecord task = mTaskHistory.get(taskNdx); 3279 if (task.taskType == homeStackTaskType) { 3280 if (DEBUG_TASKS || DEBUG_STACK) 3281 Slog.d(TAG, "moveHomeStackTaskToTop: moving " + task); 3282 mTaskHistory.remove(taskNdx); 3283 mTaskHistory.add(top, task); 3284 updateTaskMovement(task, true); 3285 mWindowManager.moveTaskToTop(task.taskId); 3286 return; 3287 } 3288 } 3289 } 3290 3291 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3292 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3293 3294 final int numTasks = mTaskHistory.size(); 3295 final int index = mTaskHistory.indexOf(tr); 3296 if (numTasks == 0 || index < 0) { 3297 // nothing to do! 3298 if (reason != null && 3299 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3300 ActivityOptions.abort(options); 3301 } else { 3302 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3303 } 3304 return; 3305 } 3306 3307 moveToFront(); 3308 3309 // Shift all activities with this task up to the top 3310 // of the stack, keeping them in the same internal order. 3311 insertTaskAtTop(tr); 3312 3313 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3314 if (reason != null && 3315 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3316 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3317 ActivityRecord r = topRunningActivityLocked(null); 3318 if (r != null) { 3319 mNoAnimActivities.add(r); 3320 } 3321 ActivityOptions.abort(options); 3322 } else { 3323 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3324 } 3325 3326 mWindowManager.moveTaskToTop(tr.taskId); 3327 3328 mStackSupervisor.resumeTopActivitiesLocked(); 3329 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3330 3331 if (VALIDATE_TOKENS) { 3332 validateAppTokensLocked(); 3333 } 3334 } 3335 3336 /** 3337 * Worker method for rearranging history stack. Implements the function of moving all 3338 * activities for a specific task (gathering them if disjoint) into a single group at the 3339 * bottom of the stack. 3340 * 3341 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3342 * to premeptively cancel the move. 3343 * 3344 * @param taskId The taskId to collect and move to the bottom. 3345 * @return Returns true if the move completed, false if not. 3346 */ 3347 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3348 final TaskRecord tr = taskForIdLocked(taskId); 3349 if (tr == null) { 3350 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3351 return false; 3352 } 3353 3354 Slog.i(TAG, "moveTaskToBack: " + tr); 3355 3356 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3357 3358 // If we have a watcher, preflight the move before committing to it. First check 3359 // for *other* available tasks, but if none are available, then try again allowing the 3360 // current task to be selected. 3361 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3362 ActivityRecord next = topRunningActivityLocked(null, taskId); 3363 if (next == null) { 3364 next = topRunningActivityLocked(null, 0); 3365 } 3366 if (next != null) { 3367 // ask watcher if this is allowed 3368 boolean moveOK = true; 3369 try { 3370 moveOK = mService.mController.activityResuming(next.packageName); 3371 } catch (RemoteException e) { 3372 mService.mController = null; 3373 Watchdog.getInstance().setActivityController(null); 3374 } 3375 if (!moveOK) { 3376 return false; 3377 } 3378 } 3379 } 3380 3381 if (DEBUG_TRANSITION) Slog.v(TAG, 3382 "Prepare to back transition: task=" + taskId); 3383 3384 mTaskHistory.remove(tr); 3385 mTaskHistory.add(0, tr); 3386 updateTaskMovement(tr, false); 3387 3388 // There is an assumption that moving a task to the back moves it behind the home activity. 3389 // We make sure here that some activity in the stack will launch home. 3390 int numTasks = mTaskHistory.size(); 3391 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3392 final TaskRecord task = mTaskHistory.get(taskNdx); 3393 if (task.isOverHomeStack()) { 3394 break; 3395 } 3396 if (taskNdx == 1) { 3397 // Set the last task before tr to go to home. 3398 task.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3399 } 3400 } 3401 3402 if (reason != null && 3403 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3404 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3405 ActivityRecord r = topRunningActivityLocked(null); 3406 if (r != null) { 3407 mNoAnimActivities.add(r); 3408 } 3409 } else { 3410 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3411 } 3412 mWindowManager.moveTaskToBottom(taskId); 3413 3414 if (VALIDATE_TOKENS) { 3415 validateAppTokensLocked(); 3416 } 3417 3418 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3419 if (task == tr && tr.isOverHomeStack() || numTasks <= 1 && isOnHomeDisplay()) { 3420 final int taskToReturnTo = tr.getTaskToReturnTo(); 3421 tr.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 3422 return mStackSupervisor.resumeHomeStackTask(taskToReturnTo, null); 3423 } 3424 3425 mStackSupervisor.resumeTopActivitiesLocked(); 3426 return true; 3427 } 3428 3429 static final void logStartActivity(int tag, ActivityRecord r, 3430 TaskRecord task) { 3431 final Uri data = r.intent.getData(); 3432 final String strData = data != null ? data.toSafeString() : null; 3433 3434 EventLog.writeEvent(tag, 3435 r.userId, System.identityHashCode(r), task.taskId, 3436 r.shortComponentName, r.intent.getAction(), 3437 r.intent.getType(), strData, r.intent.getFlags()); 3438 } 3439 3440 /** 3441 * Make sure the given activity matches the current configuration. Returns 3442 * false if the activity had to be destroyed. Returns true if the 3443 * configuration is the same, or the activity will remain running as-is 3444 * for whatever reason. Ensures the HistoryRecord is updated with the 3445 * correct configuration and all other bookkeeping is handled. 3446 */ 3447 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3448 int globalChanges) { 3449 if (mConfigWillChange) { 3450 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3451 "Skipping config check (will change): " + r); 3452 return true; 3453 } 3454 3455 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3456 "Ensuring correct configuration: " + r); 3457 3458 // Short circuit: if the two configurations are the exact same 3459 // object (the common case), then there is nothing to do. 3460 Configuration newConfig = mService.mConfiguration; 3461 if (r.configuration == newConfig && !r.forceNewConfig) { 3462 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3463 "Configuration unchanged in " + r); 3464 return true; 3465 } 3466 3467 // We don't worry about activities that are finishing. 3468 if (r.finishing) { 3469 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3470 "Configuration doesn't matter in finishing " + r); 3471 r.stopFreezingScreenLocked(false); 3472 return true; 3473 } 3474 3475 // Okay we now are going to make this activity have the new config. 3476 // But then we need to figure out how it needs to deal with that. 3477 Configuration oldConfig = r.configuration; 3478 r.configuration = newConfig; 3479 3480 // Determine what has changed. May be nothing, if this is a config 3481 // that has come back from the app after going idle. In that case 3482 // we just want to leave the official config object now in the 3483 // activity and do nothing else. 3484 final int changes = oldConfig.diff(newConfig); 3485 if (changes == 0 && !r.forceNewConfig) { 3486 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3487 "Configuration no differences in " + r); 3488 return true; 3489 } 3490 3491 // If the activity isn't currently running, just leave the new 3492 // configuration and it will pick that up next time it starts. 3493 if (r.app == null || r.app.thread == null) { 3494 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3495 "Configuration doesn't matter not running " + r); 3496 r.stopFreezingScreenLocked(false); 3497 r.forceNewConfig = false; 3498 return true; 3499 } 3500 3501 // Figure out how to handle the changes between the configurations. 3502 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3503 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3504 + Integer.toHexString(changes) + ", handles=0x" 3505 + Integer.toHexString(r.info.getRealConfigChanged()) 3506 + ", newConfig=" + newConfig); 3507 } 3508 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3509 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3510 r.configChangeFlags |= changes; 3511 r.startFreezingScreenLocked(r.app, globalChanges); 3512 r.forceNewConfig = false; 3513 if (r.app == null || r.app.thread == null) { 3514 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3515 "Config is destroying non-running " + r); 3516 destroyActivityLocked(r, true, "config"); 3517 } else if (r.state == ActivityState.PAUSING) { 3518 // A little annoying: we are waiting for this activity to 3519 // finish pausing. Let's not do anything now, but just 3520 // flag that it needs to be restarted when done pausing. 3521 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3522 "Config is skipping already pausing " + r); 3523 r.configDestroy = true; 3524 return true; 3525 } else if (r.state == ActivityState.RESUMED) { 3526 // Try to optimize this case: the configuration is changing 3527 // and we need to restart the top, resumed activity. 3528 // Instead of doing the normal handshaking, just say 3529 // "restart!". 3530 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3531 "Config is relaunching resumed " + r); 3532 relaunchActivityLocked(r, r.configChangeFlags, true); 3533 r.configChangeFlags = 0; 3534 } else { 3535 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3536 "Config is relaunching non-resumed " + r); 3537 relaunchActivityLocked(r, r.configChangeFlags, false); 3538 r.configChangeFlags = 0; 3539 } 3540 3541 // All done... tell the caller we weren't able to keep this 3542 // activity around. 3543 return false; 3544 } 3545 3546 // Default case: the activity can handle this new configuration, so 3547 // hand it over. Note that we don't need to give it the new 3548 // configuration, since we always send configuration changes to all 3549 // process when they happen so it can just use whatever configuration 3550 // it last got. 3551 if (r.app != null && r.app.thread != null) { 3552 try { 3553 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3554 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3555 } catch (RemoteException e) { 3556 // If process died, whatever. 3557 } 3558 } 3559 r.stopFreezingScreenLocked(false); 3560 3561 return true; 3562 } 3563 3564 private boolean relaunchActivityLocked(ActivityRecord r, 3565 int changes, boolean andResume) { 3566 List<ResultInfo> results = null; 3567 List<Intent> newIntents = null; 3568 if (andResume) { 3569 results = r.results; 3570 newIntents = r.newIntents; 3571 } 3572 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3573 + " with results=" + results + " newIntents=" + newIntents 3574 + " andResume=" + andResume); 3575 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3576 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3577 r.task.taskId, r.shortComponentName); 3578 3579 r.startFreezingScreenLocked(r.app, 0); 3580 3581 mStackSupervisor.removeChildActivityContainers(r); 3582 3583 try { 3584 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3585 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3586 + r); 3587 r.forceNewConfig = false; 3588 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3589 changes, !andResume, new Configuration(mService.mConfiguration)); 3590 // Note: don't need to call pauseIfSleepingLocked() here, because 3591 // the caller will only pass in 'andResume' if this activity is 3592 // currently resumed, which implies we aren't sleeping. 3593 } catch (RemoteException e) { 3594 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3595 } 3596 3597 if (andResume) { 3598 r.results = null; 3599 r.newIntents = null; 3600 r.state = ActivityState.RESUMED; 3601 } else { 3602 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3603 r.state = ActivityState.PAUSED; 3604 } 3605 3606 return true; 3607 } 3608 3609 boolean willActivityBeVisibleLocked(IBinder token) { 3610 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3611 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3612 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3613 final ActivityRecord r = activities.get(activityNdx); 3614 if (r.appToken == token) { 3615 return true; 3616 } 3617 if (r.fullscreen && !r.finishing) { 3618 return false; 3619 } 3620 } 3621 } 3622 final ActivityRecord r = ActivityRecord.forToken(token); 3623 if (r == null) { 3624 return false; 3625 } 3626 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3627 + " would have returned true for r=" + r); 3628 return !r.finishing; 3629 } 3630 3631 void closeSystemDialogsLocked() { 3632 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3633 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3634 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3635 final ActivityRecord r = activities.get(activityNdx); 3636 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3637 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3638 } 3639 } 3640 } 3641 } 3642 3643 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3644 boolean didSomething = false; 3645 TaskRecord lastTask = null; 3646 ComponentName homeActivity = null; 3647 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3648 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3649 int numActivities = activities.size(); 3650 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3651 ActivityRecord r = activities.get(activityNdx); 3652 final boolean samePackage = r.packageName.equals(name) 3653 || (name == null && r.userId == userId); 3654 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3655 && (samePackage || r.task == lastTask) 3656 && (r.app == null || evenPersistent || !r.app.persistent)) { 3657 if (!doit) { 3658 if (r.finishing) { 3659 // If this activity is just finishing, then it is not 3660 // interesting as far as something to stop. 3661 continue; 3662 } 3663 return true; 3664 } 3665 if (r.isHomeActivity()) { 3666 if (homeActivity != null && homeActivity.equals(r.realActivity)) { 3667 Slog.i(TAG, "Skip force-stop again " + r); 3668 continue; 3669 } else { 3670 homeActivity = r.realActivity; 3671 } 3672 } 3673 didSomething = true; 3674 Slog.i(TAG, " Force finishing activity " + r); 3675 if (samePackage) { 3676 if (r.app != null) { 3677 r.app.removed = true; 3678 } 3679 r.app = null; 3680 } 3681 lastTask = r.task; 3682 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3683 true)) { 3684 // r has been deleted from mActivities, accommodate. 3685 --numActivities; 3686 --activityNdx; 3687 } 3688 } 3689 } 3690 } 3691 return didSomething; 3692 } 3693 3694 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3695 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3696 final TaskRecord task = mTaskHistory.get(taskNdx); 3697 ActivityRecord r = null; 3698 ActivityRecord top = null; 3699 int numActivities = 0; 3700 int numRunning = 0; 3701 final ArrayList<ActivityRecord> activities = task.mActivities; 3702 if (activities.isEmpty()) { 3703 continue; 3704 } 3705 if (!allowed && !task.isHomeTask() && task.creatorUid != callingUid) { 3706 continue; 3707 } 3708 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3709 r = activities.get(activityNdx); 3710 3711 // Initialize state for next task if needed. 3712 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3713 top = r; 3714 numActivities = numRunning = 0; 3715 } 3716 3717 // Add 'r' into the current task. 3718 numActivities++; 3719 if (r.app != null && r.app.thread != null) { 3720 numRunning++; 3721 } 3722 3723 if (localLOGV) Slog.v( 3724 TAG, r.intent.getComponent().flattenToShortString() 3725 + ": task=" + r.task); 3726 } 3727 3728 RunningTaskInfo ci = new RunningTaskInfo(); 3729 ci.id = task.taskId; 3730 ci.baseActivity = r.intent.getComponent(); 3731 ci.topActivity = top.intent.getComponent(); 3732 ci.lastActiveTime = task.lastActiveTime; 3733 3734 if (top.task != null) { 3735 ci.description = top.task.lastDescription; 3736 } 3737 ci.numActivities = numActivities; 3738 ci.numRunning = numRunning; 3739 //System.out.println( 3740 // "#" + maxNum + ": " + " descr=" + ci.description); 3741 list.add(ci); 3742 } 3743 } 3744 3745 public void unhandledBackLocked() { 3746 final int top = mTaskHistory.size() - 1; 3747 if (DEBUG_SWITCH) Slog.d( 3748 TAG, "Performing unhandledBack(): top activity at " + top); 3749 if (top >= 0) { 3750 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3751 int activityTop = activities.size() - 1; 3752 if (activityTop > 0) { 3753 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3754 "unhandled-back", true); 3755 } 3756 } 3757 } 3758 3759 /** 3760 * Reset local parameters because an app's activity died. 3761 * @param app The app of the activity that died. 3762 * @return result from removeHistoryRecordsForAppLocked. 3763 */ 3764 boolean handleAppDiedLocked(ProcessRecord app) { 3765 if (mPausingActivity != null && mPausingActivity.app == app) { 3766 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3767 "App died while pausing: " + mPausingActivity); 3768 mPausingActivity = null; 3769 } 3770 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3771 mLastPausedActivity = null; 3772 mLastNoHistoryActivity = null; 3773 } 3774 3775 return removeHistoryRecordsForAppLocked(app); 3776 } 3777 3778 void handleAppCrashLocked(ProcessRecord app) { 3779 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3780 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3781 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3782 final ActivityRecord r = activities.get(activityNdx); 3783 if (r.app == app) { 3784 Slog.w(TAG, " Force finishing activity " 3785 + r.intent.getComponent().flattenToShortString()); 3786 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3787 } 3788 } 3789 } 3790 } 3791 3792 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3793 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3794 boolean printed = false; 3795 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3796 final TaskRecord task = mTaskHistory.get(taskNdx); 3797 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3798 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3799 dumpClient, dumpPackage, needSep, header, 3800 " Task id #" + task.taskId); 3801 if (printed) { 3802 header = null; 3803 } 3804 } 3805 return printed; 3806 } 3807 3808 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3809 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3810 3811 if ("all".equals(name)) { 3812 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3813 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3814 } 3815 } else if ("top".equals(name)) { 3816 final int top = mTaskHistory.size() - 1; 3817 if (top >= 0) { 3818 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3819 int listTop = list.size() - 1; 3820 if (listTop >= 0) { 3821 activities.add(list.get(listTop)); 3822 } 3823 } 3824 } else { 3825 ItemMatcher matcher = new ItemMatcher(); 3826 matcher.build(name); 3827 3828 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3829 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3830 if (matcher.match(r1, r1.intent.getComponent())) { 3831 activities.add(r1); 3832 } 3833 } 3834 } 3835 } 3836 3837 return activities; 3838 } 3839 3840 ActivityRecord restartPackage(String packageName) { 3841 ActivityRecord starting = topRunningActivityLocked(null); 3842 3843 // All activities that came from the package must be 3844 // restarted as if there was a config change. 3845 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3846 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3847 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3848 final ActivityRecord a = activities.get(activityNdx); 3849 if (a.info.packageName.equals(packageName)) { 3850 a.forceNewConfig = true; 3851 if (starting != null && a == starting && a.visible) { 3852 a.startFreezingScreenLocked(starting.app, 3853 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3854 } 3855 } 3856 } 3857 } 3858 3859 return starting; 3860 } 3861 3862 void removeTask(TaskRecord task) { 3863 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3864 mWindowManager.removeTask(task.taskId); 3865 final ActivityRecord r = mResumedActivity; 3866 if (r != null && r.task == task) { 3867 mResumedActivity = null; 3868 } 3869 3870 final int taskNdx = mTaskHistory.indexOf(task); 3871 final int topTaskNdx = mTaskHistory.size() - 1; 3872 if (task.isOverHomeStack() && taskNdx < topTaskNdx) { 3873 final TaskRecord nextTask = mTaskHistory.get(taskNdx + 1); 3874 if (!nextTask.isOverHomeStack()) { 3875 nextTask.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3876 } 3877 } 3878 mTaskHistory.remove(task); 3879 updateTaskMovement(task, true); 3880 3881 if (task.mActivities.isEmpty()) { 3882 final boolean isVoiceSession = task.voiceSession != null; 3883 if (isVoiceSession) { 3884 try { 3885 task.voiceSession.taskFinished(task.intent, task.taskId); 3886 } catch (RemoteException e) { 3887 } 3888 } 3889 if (task.autoRemoveFromRecents() || isVoiceSession) { 3890 // Task creator asked to remove this when done, or this task was a voice 3891 // interaction, so it should not remain on the recent tasks list. 3892 mService.mRecentTasks.remove(task); 3893 task.closeRecentsChain(); 3894 } 3895 } 3896 3897 if (mTaskHistory.isEmpty()) { 3898 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3899 if (isOnHomeDisplay()) { 3900 mStackSupervisor.moveHomeStack(!isHomeStack()); 3901 } 3902 if (mStacks != null) { 3903 mStacks.remove(this); 3904 mStacks.add(0, this); 3905 } 3906 mActivityContainer.onTaskListEmptyLocked(); 3907 } 3908 } 3909 3910 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 3911 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 3912 boolean toTop) { 3913 TaskRecord task = new TaskRecord(mService, taskId, info, intent, voiceSession, 3914 voiceInteractor); 3915 addTask(task, toTop, false); 3916 return task; 3917 } 3918 3919 ArrayList<TaskRecord> getAllTasks() { 3920 return new ArrayList<TaskRecord>(mTaskHistory); 3921 } 3922 3923 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 3924 task.stack = this; 3925 if (toTop) { 3926 insertTaskAtTop(task); 3927 } else { 3928 mTaskHistory.add(0, task); 3929 updateTaskMovement(task, false); 3930 } 3931 if (!moving && task.voiceSession != null) { 3932 try { 3933 task.voiceSession.taskStarted(task.intent, task.taskId); 3934 } catch (RemoteException e) { 3935 } 3936 } 3937 } 3938 3939 public int getStackId() { 3940 return mStackId; 3941 } 3942 3943 @Override 3944 public String toString() { 3945 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3946 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3947 } 3948} 3949