ActivityStack.java revision 01e9a97fe68dbba42a0edd0ad965ccfe2b8efe7d
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 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1139 ActivityRecord r = topRunningActivityLocked(null); 1140 if (r != null) { 1141 ensureActivitiesVisibleLocked(r, starting, null, configChanges); 1142 } 1143 } 1144 1145 /** 1146 * Make sure that all activities that need to be visible (that is, they 1147 * currently can be seen by the user) actually are. 1148 */ 1149 final void ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1150 String onlyThisProcess, int configChanges) { 1151 if (DEBUG_VISBILITY) Slog.v( 1152 TAG, "ensureActivitiesVisible behind " + top 1153 + " configChanges=0x" + Integer.toHexString(configChanges)); 1154 1155 if (mTranslucentActivityWaiting != top) { 1156 mUndrawnActivitiesBelowTopTranslucent.clear(); 1157 if (mTranslucentActivityWaiting != null) { 1158 // Call the callback with a timeout indication. 1159 notifyActivityDrawnLocked(null); 1160 mTranslucentActivityWaiting = null; 1161 } 1162 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1163 } 1164 1165 // If the top activity is not fullscreen, then we need to 1166 // make sure any activities under it are now visible. 1167 boolean aboveTop = true; 1168 boolean behindFullscreen = !isStackVisible(); 1169 1170 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1171 final TaskRecord task = mTaskHistory.get(taskNdx); 1172 final ArrayList<ActivityRecord> activities = task.mActivities; 1173 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1174 final ActivityRecord r = activities.get(activityNdx); 1175 if (r.finishing) { 1176 continue; 1177 } 1178 if (aboveTop && r != top) { 1179 continue; 1180 } 1181 aboveTop = false; 1182 if (!behindFullscreen) { 1183 if (DEBUG_VISBILITY) Slog.v( 1184 TAG, "Make visible? " + r + " finishing=" + r.finishing 1185 + " state=" + r.state); 1186 1187 final boolean doThisProcess = onlyThisProcess == null 1188 || onlyThisProcess.equals(r.processName); 1189 1190 // First: if this is not the current activity being started, make 1191 // sure it matches the current configuration. 1192 if (r != starting && doThisProcess) { 1193 ensureActivityConfigurationLocked(r, 0); 1194 } 1195 1196 if (r.app == null || r.app.thread == null) { 1197 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1198 // This activity needs to be visible, but isn't even 1199 // running... get it started, but don't resume it 1200 // at this point. 1201 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1202 if (r != starting) { 1203 r.startFreezingScreenLocked(r.app, configChanges); 1204 } 1205 if (!r.visible) { 1206 if (DEBUG_VISBILITY) Slog.v( 1207 TAG, "Starting and making visible: " + r); 1208 setVisibile(r, true); 1209 } 1210 if (r != starting) { 1211 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1212 } 1213 } 1214 1215 } else if (r.visible) { 1216 // If this activity is already visible, then there is nothing 1217 // else to do here. 1218 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1219 r.stopFreezingScreenLocked(false); 1220 try { 1221 if (mReturningActivityOptions != null && r == top && activityNdx > 0) { 1222 ActivityRecord under = activities.get(activityNdx - 1); 1223 under.app.thread.scheduleOnNewActivityOptions(under.appToken, 1224 mReturningActivityOptions); 1225 } 1226 } catch(RemoteException e) { 1227 } 1228 } else if (onlyThisProcess == null) { 1229 // This activity is not currently visible, but is running. 1230 // Tell it to become visible. 1231 r.visible = true; 1232 if (r.state != ActivityState.RESUMED && r != starting) { 1233 // If this activity is paused, tell it 1234 // to now show its window. 1235 if (DEBUG_VISBILITY) Slog.v( 1236 TAG, "Making visible and scheduling visibility: " + r); 1237 try { 1238 if (mTranslucentActivityWaiting != null) { 1239 r.updateOptionsLocked(mReturningActivityOptions); 1240 mUndrawnActivitiesBelowTopTranslucent.add(r); 1241 } 1242 setVisibile(r, true); 1243 r.sleeping = false; 1244 r.app.pendingUiClean = true; 1245 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1246 r.stopFreezingScreenLocked(false); 1247 } catch (Exception e) { 1248 // Just skip on any failure; we'll make it 1249 // visible when it next restarts. 1250 Slog.w(TAG, "Exception thrown making visibile: " 1251 + r.intent.getComponent(), e); 1252 } 1253 } 1254 } 1255 1256 // Aggregate current change flags. 1257 configChanges |= r.configChangeFlags; 1258 1259 if (r.fullscreen) { 1260 // At this point, nothing else needs to be shown 1261 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1262 behindFullscreen = true; 1263 } else if (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()) { 1264 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1265 behindFullscreen = true; 1266 } 1267 } else { 1268 if (DEBUG_VISBILITY) Slog.v( 1269 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1270 + " state=" + r.state 1271 + " behindFullscreen=" + behindFullscreen); 1272 // Now for any activities that aren't visible to the user, make 1273 // sure they no longer are keeping the screen frozen. 1274 if (r.visible) { 1275 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1276 try { 1277 setVisibile(r, false); 1278 switch (r.state) { 1279 case STOPPING: 1280 case STOPPED: 1281 if (r.app != null && r.app.thread != null) { 1282 if (DEBUG_VISBILITY) Slog.v( 1283 TAG, "Scheduling invisibility: " + r); 1284 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1285 } 1286 break; 1287 1288 case INITIALIZING: 1289 case RESUMED: 1290 case PAUSING: 1291 case PAUSED: 1292 // This case created for transitioning activities from 1293 // translucent to opaque {@link Activity#convertToOpaque}. 1294 if (getMediaPlayer() == r) { 1295 releaseMediaResources(); 1296 } else { 1297 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1298 mStackSupervisor.mStoppingActivities.add(r); 1299 } 1300 mStackSupervisor.scheduleIdleLocked(); 1301 } 1302 break; 1303 1304 default: 1305 break; 1306 } 1307 } catch (Exception e) { 1308 // Just skip on any failure; we'll make it 1309 // visible when it next restarts. 1310 Slog.w(TAG, "Exception thrown making hidden: " 1311 + r.intent.getComponent(), e); 1312 } 1313 } else { 1314 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1315 } 1316 } 1317 } 1318 } 1319 1320 if (mTranslucentActivityWaiting != null && 1321 mUndrawnActivitiesBelowTopTranslucent.isEmpty()) { 1322 // Nothing is getting drawn or everything was already visible, don't wait for timeout. 1323 notifyActivityDrawnLocked(null); 1324 } 1325 } 1326 1327 void convertToTranslucent(ActivityRecord r, ActivityOptions options) { 1328 mTranslucentActivityWaiting = r; 1329 mUndrawnActivitiesBelowTopTranslucent.clear(); 1330 mReturningActivityOptions = options; 1331 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1332 } 1333 1334 /** 1335 * Called as activities below the top translucent activity are redrawn. When the last one is 1336 * redrawn notify the top activity by calling 1337 * {@link Activity#onTranslucentConversionComplete}. 1338 * 1339 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1340 * occurred and the activity will be notified immediately. 1341 */ 1342 void notifyActivityDrawnLocked(ActivityRecord r) { 1343 mActivityContainer.setDrawn(); 1344 if ((r == null) 1345 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1346 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1347 // The last undrawn activity below the top has just been drawn. If there is an 1348 // opaque activity at the top, notify it that it can become translucent safely now. 1349 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1350 mTranslucentActivityWaiting = null; 1351 mUndrawnActivitiesBelowTopTranslucent.clear(); 1352 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1353 1354 if (waitingActivity != null) { 1355 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1356 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1357 try { 1358 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1359 waitingActivity.appToken, r != null); 1360 } catch (RemoteException e) { 1361 } 1362 } 1363 } 1364 } 1365 } 1366 1367 /** If any activities below the top running one are in the INITIALIZING state and they have a 1368 * starting window displayed then remove that starting window. It is possible that the activity 1369 * in this state will never resumed in which case that starting window will be orphaned. */ 1370 void cancelInitializingActivities() { 1371 final ActivityRecord topActivity = topRunningActivityLocked(null); 1372 boolean aboveTop = true; 1373 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1374 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1375 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1376 final ActivityRecord r = activities.get(activityNdx); 1377 if (aboveTop) { 1378 if (r == topActivity) { 1379 aboveTop = false; 1380 } 1381 continue; 1382 } 1383 1384 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1385 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1386 r.mStartingWindowShown = false; 1387 mWindowManager.removeAppStartingWindow(r.appToken); 1388 } 1389 } 1390 } 1391 } 1392 1393 /** 1394 * Ensure that the top activity in the stack is resumed. 1395 * 1396 * @param prev The previously resumed activity, for when in the process 1397 * of pausing; can be null to call from elsewhere. 1398 * 1399 * @return Returns true if something is being resumed, or false if 1400 * nothing happened. 1401 */ 1402 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1403 return resumeTopActivityLocked(prev, null); 1404 } 1405 1406 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1407 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1408 1409 ActivityRecord parent = mActivityContainer.mParentActivity; 1410 if ((parent != null && parent.state != ActivityState.RESUMED) || 1411 !mActivityContainer.isAttachedLocked()) { 1412 // Do not resume this stack if its parent is not resumed. 1413 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1414 return false; 1415 } 1416 1417 cancelInitializingActivities(); 1418 1419 // Find the first activity that is not finishing. 1420 ActivityRecord next = topRunningActivityLocked(null); 1421 1422 // Remember how we'll process this pause/resume situation, and ensure 1423 // that the state is reset however we wind up proceeding. 1424 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1425 mStackSupervisor.mUserLeaving = false; 1426 1427 final TaskRecord prevTask = prev != null ? prev.task : null; 1428 if (next == null) { 1429 // There are no more activities! Let's just start up the 1430 // Launcher... 1431 ActivityOptions.abort(options); 1432 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1433 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1434 // Only resume home if on home display 1435 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1436 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1437 return isOnHomeDisplay() && 1438 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1439 } 1440 1441 next.delayedResume = false; 1442 1443 // If the top activity is the resumed one, nothing to do. 1444 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1445 mStackSupervisor.allResumedActivitiesComplete()) { 1446 // Make sure we have executed any pending transitions, since there 1447 // should be nothing left to do at this point. 1448 mWindowManager.executeAppTransition(); 1449 mNoAnimActivities.clear(); 1450 ActivityOptions.abort(options); 1451 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1452 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1453 return false; 1454 } 1455 1456 final TaskRecord nextTask = next.task; 1457 if (prevTask != null && prevTask.stack == this && 1458 prevTask.isOverHomeStack() && prev.finishing && prev.frontOfTask) { 1459 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1460 if (prevTask == nextTask) { 1461 prevTask.setFrontOfTask(); 1462 } else if (prevTask != topTask()) { 1463 // This task is going away but it was supposed to return to the home stack. 1464 // Now the task above it has to return to the home task instead. 1465 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1466 mTaskHistory.get(taskNdx).setTaskToReturnTo(HOME_ACTIVITY_TYPE); 1467 } else { 1468 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1469 "resumeTopActivityLocked: Launching home next"); 1470 // Only resume home if on home display 1471 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1472 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1473 return isOnHomeDisplay() && 1474 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1475 } 1476 } 1477 1478 // If we are sleeping, and there is no resumed activity, and the top 1479 // activity is paused, well that is the state we want. 1480 if (mService.isSleepingOrShuttingDown() 1481 && mLastPausedActivity == next 1482 && mStackSupervisor.allPausedActivitiesComplete()) { 1483 // Make sure we have executed any pending transitions, since there 1484 // should be nothing left to do at this point. 1485 mWindowManager.executeAppTransition(); 1486 mNoAnimActivities.clear(); 1487 ActivityOptions.abort(options); 1488 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1489 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1490 return false; 1491 } 1492 1493 // Make sure that the user who owns this activity is started. If not, 1494 // we will just leave it as is because someone should be bringing 1495 // another user's activities to the top of the stack. 1496 if (mService.mStartedUsers.get(next.userId) == null) { 1497 Slog.w(TAG, "Skipping resume of top activity " + next 1498 + ": user " + next.userId + " is stopped"); 1499 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1500 return false; 1501 } 1502 1503 // The activity may be waiting for stop, but that is no longer 1504 // appropriate for it. 1505 mStackSupervisor.mStoppingActivities.remove(next); 1506 mStackSupervisor.mGoingToSleepActivities.remove(next); 1507 next.sleeping = false; 1508 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1509 1510 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1511 1512 // If we are currently pausing an activity, then don't do anything 1513 // until that is done. 1514 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1515 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1516 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1517 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1518 return false; 1519 } 1520 1521 // Okay we are now going to start a switch, to 'next'. We may first 1522 // have to pause the current activity, but this is an important point 1523 // where we have decided to go to 'next' so keep track of that. 1524 // XXX "App Redirected" dialog is getting too many false positives 1525 // at this point, so turn off for now. 1526 if (false) { 1527 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1528 long now = SystemClock.uptimeMillis(); 1529 final boolean inTime = mLastStartedActivity.startTime != 0 1530 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1531 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1532 final int nextUid = next.info.applicationInfo.uid; 1533 if (inTime && lastUid != nextUid 1534 && lastUid != next.launchedFromUid 1535 && mService.checkPermission( 1536 android.Manifest.permission.STOP_APP_SWITCHES, 1537 -1, next.launchedFromUid) 1538 != PackageManager.PERMISSION_GRANTED) { 1539 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1540 } else { 1541 next.startTime = now; 1542 mLastStartedActivity = next; 1543 } 1544 } else { 1545 next.startTime = SystemClock.uptimeMillis(); 1546 mLastStartedActivity = next; 1547 } 1548 } 1549 1550 // We need to start pausing the current activity so the top one 1551 // can be resumed... 1552 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1553 if (mResumedActivity != null) { 1554 pausing = true; 1555 startPausingLocked(userLeaving, false); 1556 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1557 } 1558 if (pausing) { 1559 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1560 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1561 // At this point we want to put the upcoming activity's process 1562 // at the top of the LRU list, since we know we will be needing it 1563 // very soon and it would be a waste to let it get killed if it 1564 // happens to be sitting towards the end. 1565 if (next.app != null && next.app.thread != null) { 1566 mService.updateLruProcessLocked(next.app, true, null); 1567 } 1568 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1569 return true; 1570 } 1571 1572 // If the most recent activity was noHistory but was only stopped rather 1573 // than stopped+finished because the device went to sleep, we need to make 1574 // sure to finish it as we're making a new activity topmost. 1575 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1576 !mLastNoHistoryActivity.finishing) { 1577 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1578 " on new resume"); 1579 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1580 null, "no-history", false); 1581 mLastNoHistoryActivity = null; 1582 } 1583 1584 if (prev != null && prev != next) { 1585 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1586 prev.waitingVisible = true; 1587 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1588 if (DEBUG_SWITCH) Slog.v( 1589 TAG, "Resuming top, waiting visible to hide: " + prev); 1590 } else { 1591 // The next activity is already visible, so hide the previous 1592 // activity's windows right now so we can show the new one ASAP. 1593 // We only do this if the previous is finishing, which should mean 1594 // it is on top of the one being resumed so hiding it quickly 1595 // is good. Otherwise, we want to do the normal route of allowing 1596 // the resumed activity to be shown so we can decide if the 1597 // previous should actually be hidden depending on whether the 1598 // new one is found to be full-screen or not. 1599 if (prev.finishing) { 1600 mWindowManager.setAppVisibility(prev.appToken, false); 1601 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1602 + prev + ", waitingVisible=" 1603 + (prev != null ? prev.waitingVisible : null) 1604 + ", nowVisible=" + next.nowVisible); 1605 } else { 1606 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1607 + prev + ", waitingVisible=" 1608 + (prev != null ? prev.waitingVisible : null) 1609 + ", nowVisible=" + next.nowVisible); 1610 } 1611 } 1612 } 1613 1614 // Launching this app's activity, make sure the app is no longer 1615 // considered stopped. 1616 try { 1617 AppGlobals.getPackageManager().setPackageStoppedState( 1618 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1619 } catch (RemoteException e1) { 1620 } catch (IllegalArgumentException e) { 1621 Slog.w(TAG, "Failed trying to unstop package " 1622 + next.packageName + ": " + e); 1623 } 1624 1625 // We are starting up the next activity, so tell the window manager 1626 // that the previous one will be hidden soon. This way it can know 1627 // to ignore it when computing the desired screen orientation. 1628 boolean anim = true; 1629 if (prev != null) { 1630 if (prev.finishing) { 1631 if (DEBUG_TRANSITION) Slog.v(TAG, 1632 "Prepare close transition: prev=" + prev); 1633 if (mNoAnimActivities.contains(prev)) { 1634 anim = false; 1635 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1636 } else { 1637 mWindowManager.prepareAppTransition(prev.task == next.task 1638 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1639 : AppTransition.TRANSIT_TASK_CLOSE, false); 1640 } 1641 mWindowManager.setAppWillBeHidden(prev.appToken); 1642 mWindowManager.setAppVisibility(prev.appToken, false); 1643 } else { 1644 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1645 if (mNoAnimActivities.contains(next)) { 1646 anim = false; 1647 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1648 } else { 1649 mWindowManager.prepareAppTransition(prev.task == next.task 1650 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1651 : AppTransition.TRANSIT_TASK_OPEN, false); 1652 } 1653 } 1654 if (false) { 1655 mWindowManager.setAppWillBeHidden(prev.appToken); 1656 mWindowManager.setAppVisibility(prev.appToken, false); 1657 } 1658 } else { 1659 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1660 if (mNoAnimActivities.contains(next)) { 1661 anim = false; 1662 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1663 } else { 1664 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1665 } 1666 } 1667 1668 Bundle resumeAnimOptions = null; 1669 if (anim) { 1670 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1671 if (opts != null) { 1672 resumeAnimOptions = opts.toBundle(); 1673 } 1674 next.applyOptionsLocked(); 1675 } else { 1676 next.clearOptionsLocked(); 1677 } 1678 1679 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1680 if (next.app != null && next.app.thread != null) { 1681 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1682 1683 // This activity is now becoming visible. 1684 mWindowManager.setAppVisibility(next.appToken, true); 1685 1686 // schedule launch ticks to collect information about slow apps. 1687 next.startLaunchTickingLocked(); 1688 1689 ActivityRecord lastResumedActivity = 1690 lastStack == null ? null :lastStack.mResumedActivity; 1691 ActivityState lastState = next.state; 1692 1693 mService.updateCpuStats(); 1694 1695 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1696 next.state = ActivityState.RESUMED; 1697 mResumedActivity = next; 1698 next.task.touchActiveTime(); 1699 mService.addRecentTaskLocked(next.task); 1700 mService.updateLruProcessLocked(next.app, true, null); 1701 updateLRUListLocked(next); 1702 mService.updateOomAdjLocked(); 1703 1704 // Have the window manager re-evaluate the orientation of 1705 // the screen based on the new activity order. 1706 boolean notUpdated = true; 1707 if (mStackSupervisor.isFrontStack(this)) { 1708 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1709 mService.mConfiguration, 1710 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1711 if (config != null) { 1712 next.frozenBeforeDestroy = true; 1713 } 1714 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1715 } 1716 1717 if (notUpdated) { 1718 // The configuration update wasn't able to keep the existing 1719 // instance of the activity, and instead started a new one. 1720 // We should be all done, but let's just make sure our activity 1721 // is still at the top and schedule another run if something 1722 // weird happened. 1723 ActivityRecord nextNext = topRunningActivityLocked(null); 1724 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1725 "Activity config changed during resume: " + next 1726 + ", new next: " + nextNext); 1727 if (nextNext != next) { 1728 // Do over! 1729 mStackSupervisor.scheduleResumeTopActivities(); 1730 } 1731 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1732 mNoAnimActivities.clear(); 1733 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1734 return true; 1735 } 1736 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1737 return false; 1738 } 1739 1740 try { 1741 // Deliver all pending results. 1742 ArrayList<ResultInfo> a = next.results; 1743 if (a != null) { 1744 final int N = a.size(); 1745 if (!next.finishing && N > 0) { 1746 if (DEBUG_RESULTS) Slog.v( 1747 TAG, "Delivering results to " + next 1748 + ": " + a); 1749 next.app.thread.scheduleSendResult(next.appToken, a); 1750 } 1751 } 1752 1753 if (next.newIntents != null) { 1754 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1755 } 1756 1757 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1758 next.userId, System.identityHashCode(next), 1759 next.task.taskId, next.shortComponentName); 1760 1761 next.sleeping = false; 1762 mService.showAskCompatModeDialogLocked(next); 1763 next.app.pendingUiClean = true; 1764 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1765 next.clearOptionsLocked(); 1766 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1767 mService.isNextTransitionForward(), resumeAnimOptions); 1768 1769 mStackSupervisor.checkReadyForSleepLocked(); 1770 1771 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1772 } catch (Exception e) { 1773 // Whoops, need to restart this activity! 1774 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1775 + lastState + ": " + next); 1776 next.state = lastState; 1777 if (lastStack != null) { 1778 lastStack.mResumedActivity = lastResumedActivity; 1779 } 1780 Slog.i(TAG, "Restarting because process died: " + next); 1781 if (!next.hasBeenLaunched) { 1782 next.hasBeenLaunched = true; 1783 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1784 mStackSupervisor.isFrontStack(lastStack)) { 1785 mWindowManager.setAppStartingWindow( 1786 next.appToken, next.packageName, next.theme, 1787 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1788 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1789 next.windowFlags, null, true); 1790 } 1791 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1792 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1793 return true; 1794 } 1795 1796 // From this point on, if something goes wrong there is no way 1797 // to recover the activity. 1798 try { 1799 next.visible = true; 1800 completeResumeLocked(next); 1801 } catch (Exception e) { 1802 // If any exception gets thrown, toss away this 1803 // activity and try the next one. 1804 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1805 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1806 "resume-exception", true); 1807 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1808 return true; 1809 } 1810 next.stopped = false; 1811 1812 } else { 1813 // Whoops, need to restart this activity! 1814 if (!next.hasBeenLaunched) { 1815 next.hasBeenLaunched = true; 1816 } else { 1817 if (SHOW_APP_STARTING_PREVIEW) { 1818 mWindowManager.setAppStartingWindow( 1819 next.appToken, next.packageName, next.theme, 1820 mService.compatibilityInfoForPackageLocked( 1821 next.info.applicationInfo), 1822 next.nonLocalizedLabel, 1823 next.labelRes, next.icon, next.logo, next.windowFlags, 1824 null, true); 1825 } 1826 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1827 } 1828 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1829 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1830 } 1831 1832 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1833 return true; 1834 } 1835 1836 private void insertTaskAtTop(TaskRecord task) { 1837 // If this is being moved to the top by another activity or being launched from the home 1838 // activity, set mOnTopOfHome accordingly. 1839 if (isOnHomeDisplay()) { 1840 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1841 final boolean fromHome = lastStack.isHomeStack(); 1842 if (!isHomeStack() && (fromHome || topTask() != task)) { 1843 task.setTaskToReturnTo(fromHome ? 1844 lastStack.topTask().taskType : APPLICATION_ACTIVITY_TYPE); 1845 } 1846 } else { 1847 task.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 1848 } 1849 1850 mTaskHistory.remove(task); 1851 // Now put task at top. 1852 int stackNdx = mTaskHistory.size(); 1853 if (!isCurrentProfileLocked(task.userId)) { 1854 // Put non-current user tasks below current user tasks. 1855 while (--stackNdx >= 0) { 1856 if (!isCurrentProfileLocked(mTaskHistory.get(stackNdx).userId)) { 1857 break; 1858 } 1859 } 1860 ++stackNdx; 1861 } 1862 mTaskHistory.add(stackNdx, task); 1863 updateTaskMovement(task, true); 1864 } 1865 1866 final void startActivityLocked(ActivityRecord r, boolean newTask, 1867 boolean doResume, boolean keepCurTransition, Bundle options) { 1868 TaskRecord rTask = r.task; 1869 final int taskId = rTask.taskId; 1870 if (taskForIdLocked(taskId) == null || newTask) { 1871 // Last activity in task had been removed or ActivityManagerService is reusing task. 1872 // Insert or replace. 1873 // Might not even be in. 1874 insertTaskAtTop(rTask); 1875 mWindowManager.moveTaskToTop(taskId); 1876 } 1877 TaskRecord task = null; 1878 if (!newTask) { 1879 // If starting in an existing task, find where that is... 1880 boolean startIt = true; 1881 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1882 task = mTaskHistory.get(taskNdx); 1883 if (task == r.task) { 1884 // Here it is! Now, if this is not yet visible to the 1885 // user, then just add it without starting; it will 1886 // get started when the user navigates back to it. 1887 if (!startIt) { 1888 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1889 + task, new RuntimeException("here").fillInStackTrace()); 1890 task.addActivityToTop(r); 1891 r.putInHistory(); 1892 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1893 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1894 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1895 r.userId, r.info.configChanges, task.voiceSession != null); 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 ? AppTransition.TRANSIT_TASK_OPEN 1950 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1951 mNoAnimActivities.remove(r); 1952 } 1953 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1954 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1955 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1956 r.info.configChanges, task.voiceSession != null); 1957 boolean doShow = true; 1958 if (newTask) { 1959 // Even though this activity is starting fresh, we still need 1960 // to reset it to make sure we apply affinities to move any 1961 // existing activities from other tasks in to it. 1962 // If the caller has requested that the target task be 1963 // reset, then do so. 1964 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1965 resetTaskIfNeededLocked(r, r); 1966 doShow = topRunningNonDelayedActivityLocked(null) == r; 1967 } 1968 } else if (options != null && new ActivityOptions(options).getAnimationType() 1969 == ActivityOptions.ANIM_SCENE_TRANSITION) { 1970 doShow = false; 1971 } 1972 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1973 // Figure out if we are transitioning from another activity that is 1974 // "has the same starting icon" as the next one. This allows the 1975 // window manager to keep the previous window it had previously 1976 // created, if it still had one. 1977 ActivityRecord prev = mResumedActivity; 1978 if (prev != null) { 1979 // We don't want to reuse the previous starting preview if: 1980 // (1) The current activity is in a different task. 1981 if (prev.task != r.task) { 1982 prev = null; 1983 } 1984 // (2) The current activity is already displayed. 1985 else if (prev.nowVisible) { 1986 prev = null; 1987 } 1988 } 1989 mWindowManager.setAppStartingWindow( 1990 r.appToken, r.packageName, r.theme, 1991 mService.compatibilityInfoForPackageLocked( 1992 r.info.applicationInfo), r.nonLocalizedLabel, 1993 r.labelRes, r.icon, r.logo, r.windowFlags, 1994 prev != null ? prev.appToken : null, showStartingIcon); 1995 r.mStartingWindowShown = true; 1996 } 1997 } else { 1998 // If this is the first activity, don't do any fancy animations, 1999 // because there is nothing for it to animate on top of. 2000 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 2001 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 2002 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 2003 r.info.configChanges, task.voiceSession != null); 2004 ActivityOptions.abort(options); 2005 options = null; 2006 } 2007 if (VALIDATE_TOKENS) { 2008 validateAppTokensLocked(); 2009 } 2010 2011 if (doResume) { 2012 mStackSupervisor.resumeTopActivitiesLocked(this, r, options); 2013 } 2014 } 2015 2016 final void validateAppTokensLocked() { 2017 mValidateAppTokens.clear(); 2018 mValidateAppTokens.ensureCapacity(numActivities()); 2019 final int numTasks = mTaskHistory.size(); 2020 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 2021 TaskRecord task = mTaskHistory.get(taskNdx); 2022 final ArrayList<ActivityRecord> activities = task.mActivities; 2023 if (activities.isEmpty()) { 2024 continue; 2025 } 2026 TaskGroup group = new TaskGroup(); 2027 group.taskId = task.taskId; 2028 mValidateAppTokens.add(group); 2029 final int numActivities = activities.size(); 2030 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 2031 final ActivityRecord r = activities.get(activityNdx); 2032 group.tokens.add(r.appToken); 2033 } 2034 } 2035 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 2036 } 2037 2038 /** 2039 * Perform a reset of the given task, if needed as part of launching it. 2040 * Returns the new HistoryRecord at the top of the task. 2041 */ 2042 /** 2043 * Helper method for #resetTaskIfNeededLocked. 2044 * We are inside of the task being reset... we'll either finish this activity, push it out 2045 * for another task, or leave it as-is. 2046 * @param task The task containing the Activity (taskTop) that might be reset. 2047 * @param forceReset 2048 * @return An ActivityOptions that needs to be processed. 2049 */ 2050 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 2051 ActivityOptions topOptions = null; 2052 2053 int replyChainEnd = -1; 2054 boolean canMoveOptions = true; 2055 2056 // We only do this for activities that are not the root of the task (since if we finish 2057 // the root, we may no longer have the task!). 2058 final ArrayList<ActivityRecord> activities = task.mActivities; 2059 final int numActivities = activities.size(); 2060 final int rootActivityNdx = task.findEffectiveRootIndex(); 2061 for (int i = numActivities - 1; i > rootActivityNdx; --i ) { 2062 ActivityRecord target = activities.get(i); 2063 2064 final int flags = target.info.flags; 2065 final boolean finishOnTaskLaunch = 2066 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2067 final boolean allowTaskReparenting = 2068 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2069 final boolean clearWhenTaskReset = 2070 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2071 2072 if (!finishOnTaskLaunch 2073 && !clearWhenTaskReset 2074 && target.resultTo != null) { 2075 // If this activity is sending a reply to a previous 2076 // activity, we can't do anything with it now until 2077 // we reach the start of the reply chain. 2078 // XXX note that we are assuming the result is always 2079 // to the previous activity, which is almost always 2080 // the case but we really shouldn't count on. 2081 if (replyChainEnd < 0) { 2082 replyChainEnd = i; 2083 } 2084 } else if (!finishOnTaskLaunch 2085 && !clearWhenTaskReset 2086 && allowTaskReparenting 2087 && target.taskAffinity != null 2088 && !target.taskAffinity.equals(task.affinity)) { 2089 // If this activity has an affinity for another 2090 // task, then we need to move it out of here. We will 2091 // move it as far out of the way as possible, to the 2092 // bottom of the activity stack. This also keeps it 2093 // correctly ordered with any activities we previously 2094 // moved. 2095 final TaskRecord targetTask; 2096 final ActivityRecord bottom = 2097 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2098 mTaskHistory.get(0).mActivities.get(0) : null; 2099 if (bottom != null && target.taskAffinity != null 2100 && target.taskAffinity.equals(bottom.task.affinity)) { 2101 // If the activity currently at the bottom has the 2102 // same task affinity as the one we are moving, 2103 // then merge it into the same task. 2104 targetTask = bottom.task; 2105 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2106 + " out to bottom task " + bottom.task); 2107 } else { 2108 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2109 null, null, null, false); 2110 targetTask.affinityIntent = target.intent; 2111 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2112 + " out to new task " + target.task); 2113 } 2114 2115 final int targetTaskId = targetTask.taskId; 2116 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2117 2118 boolean noOptions = canMoveOptions; 2119 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2120 for (int srcPos = start; srcPos >= i; --srcPos) { 2121 final ActivityRecord p = activities.get(srcPos); 2122 if (p.finishing) { 2123 continue; 2124 } 2125 2126 canMoveOptions = false; 2127 if (noOptions && topOptions == null) { 2128 topOptions = p.takeOptionsLocked(); 2129 if (topOptions != null) { 2130 noOptions = false; 2131 } 2132 } 2133 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2134 + task + " adding to task=" + targetTask 2135 + " Callers=" + Debug.getCallers(4)); 2136 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2137 + " out to target's task " + target.task); 2138 p.setTask(targetTask, null); 2139 targetTask.addActivityAtBottom(p); 2140 2141 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2142 } 2143 2144 mWindowManager.moveTaskToBottom(targetTaskId); 2145 if (VALIDATE_TOKENS) { 2146 validateAppTokensLocked(); 2147 } 2148 2149 replyChainEnd = -1; 2150 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2151 // If the activity should just be removed -- either 2152 // because it asks for it, or the task should be 2153 // cleared -- then finish it and anything that is 2154 // part of its reply chain. 2155 int end; 2156 if (clearWhenTaskReset) { 2157 // In this case, we want to finish this activity 2158 // and everything above it, so be sneaky and pretend 2159 // like these are all in the reply chain. 2160 end = numActivities - 1; 2161 } else if (replyChainEnd < 0) { 2162 end = i; 2163 } else { 2164 end = replyChainEnd; 2165 } 2166 boolean noOptions = canMoveOptions; 2167 for (int srcPos = i; srcPos <= end; srcPos++) { 2168 ActivityRecord p = activities.get(srcPos); 2169 if (p.finishing) { 2170 continue; 2171 } 2172 canMoveOptions = false; 2173 if (noOptions && topOptions == null) { 2174 topOptions = p.takeOptionsLocked(); 2175 if (topOptions != null) { 2176 noOptions = false; 2177 } 2178 } 2179 if (DEBUG_TASKS) Slog.w(TAG, 2180 "resetTaskIntendedTask: calling finishActivity on " + p); 2181 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2182 end--; 2183 srcPos--; 2184 } 2185 } 2186 replyChainEnd = -1; 2187 } else { 2188 // If we were in the middle of a chain, well the 2189 // activity that started it all doesn't want anything 2190 // special, so leave it all as-is. 2191 replyChainEnd = -1; 2192 } 2193 } 2194 2195 return topOptions; 2196 } 2197 2198 /** 2199 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2200 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2201 * @param affinityTask The task we are looking for an affinity to. 2202 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2203 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2204 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2205 */ 2206 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2207 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2208 int replyChainEnd = -1; 2209 final int taskId = task.taskId; 2210 final String taskAffinity = task.affinity; 2211 2212 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2213 final int numActivities = activities.size(); 2214 final int rootActivityNdx = affinityTask.findEffectiveRootIndex(); 2215 2216 // Do not operate on or below the effective root Activity. 2217 for (int i = numActivities - 1; i > rootActivityNdx; --i) { 2218 ActivityRecord target = activities.get(i); 2219 2220 final int flags = target.info.flags; 2221 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2222 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2223 2224 if (target.resultTo != null) { 2225 // If this activity is sending a reply to a previous 2226 // activity, we can't do anything with it now until 2227 // we reach the start of the reply chain. 2228 // XXX note that we are assuming the result is always 2229 // to the previous activity, which is almost always 2230 // the case but we really shouldn't count on. 2231 if (replyChainEnd < 0) { 2232 replyChainEnd = i; 2233 } 2234 } else if (topTaskIsHigher 2235 && allowTaskReparenting 2236 && taskAffinity != null 2237 && taskAffinity.equals(target.taskAffinity)) { 2238 // This activity has an affinity for our task. Either remove it if we are 2239 // clearing or move it over to our task. Note that 2240 // we currently punt on the case where we are resetting a 2241 // task that is not at the top but who has activities above 2242 // with an affinity to it... this is really not a normal 2243 // case, and we will need to later pull that task to the front 2244 // and usually at that point we will do the reset and pick 2245 // up those remaining activities. (This only happens if 2246 // someone starts an activity in a new task from an activity 2247 // in a task that is not currently on top.) 2248 if (forceReset || finishOnTaskLaunch) { 2249 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2250 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2251 for (int srcPos = start; srcPos >= i; --srcPos) { 2252 final ActivityRecord p = activities.get(srcPos); 2253 if (p.finishing) { 2254 continue; 2255 } 2256 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2257 } 2258 } else { 2259 if (taskInsertionPoint < 0) { 2260 taskInsertionPoint = task.mActivities.size(); 2261 2262 } 2263 2264 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2265 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2266 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2267 for (int srcPos = start; srcPos >= i; --srcPos) { 2268 final ActivityRecord p = activities.get(srcPos); 2269 p.setTask(task, null); 2270 task.addActivityAtIndex(taskInsertionPoint, p); 2271 2272 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2273 + " to stack at " + task, 2274 new RuntimeException("here").fillInStackTrace()); 2275 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2276 + " in to resetting task " + task); 2277 mWindowManager.setAppGroupId(p.appToken, taskId); 2278 } 2279 mWindowManager.moveTaskToTop(taskId); 2280 if (VALIDATE_TOKENS) { 2281 validateAppTokensLocked(); 2282 } 2283 2284 // Now we've moved it in to place... but what if this is 2285 // a singleTop activity and we have put it on top of another 2286 // instance of the same activity? Then we drop the instance 2287 // below so it remains singleTop. 2288 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2289 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2290 int targetNdx = taskActivities.indexOf(target); 2291 if (targetNdx > 0) { 2292 ActivityRecord p = taskActivities.get(targetNdx - 1); 2293 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2294 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2295 false); 2296 } 2297 } 2298 } 2299 } 2300 2301 replyChainEnd = -1; 2302 } 2303 } 2304 return taskInsertionPoint; 2305 } 2306 2307 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2308 ActivityRecord newActivity) { 2309 boolean forceReset = 2310 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2311 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2312 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2313 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2314 forceReset = true; 2315 } 2316 } 2317 2318 final TaskRecord task = taskTop.task; 2319 2320 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2321 * for remaining tasks. Used for later tasks to reparent to task. */ 2322 boolean taskFound = false; 2323 2324 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2325 ActivityOptions topOptions = null; 2326 2327 // Preserve the location for reparenting in the new task. 2328 int reparentInsertionPoint = -1; 2329 2330 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2331 final TaskRecord targetTask = mTaskHistory.get(i); 2332 2333 if (targetTask == task) { 2334 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2335 taskFound = true; 2336 } else { 2337 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2338 taskFound, forceReset, reparentInsertionPoint); 2339 } 2340 } 2341 2342 int taskNdx = mTaskHistory.indexOf(task); 2343 do { 2344 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2345 } while (taskTop == null && taskNdx >= 0); 2346 2347 if (topOptions != null) { 2348 // If we got some ActivityOptions from an activity on top that 2349 // was removed from the task, propagate them to the new real top. 2350 if (taskTop != null) { 2351 taskTop.updateOptionsLocked(topOptions); 2352 } else { 2353 topOptions.abort(); 2354 } 2355 } 2356 2357 return taskTop; 2358 } 2359 2360 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2361 String resultWho, int requestCode, int resultCode, Intent data) { 2362 2363 if (callingUid > 0) { 2364 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2365 data, r.getUriPermissionsLocked(), r.userId); 2366 } 2367 2368 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2369 + " : who=" + resultWho + " req=" + requestCode 2370 + " res=" + resultCode + " data=" + data); 2371 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2372 try { 2373 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2374 list.add(new ResultInfo(resultWho, requestCode, 2375 resultCode, data)); 2376 r.app.thread.scheduleSendResult(r.appToken, list); 2377 return; 2378 } catch (Exception e) { 2379 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2380 } 2381 } 2382 2383 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2384 } 2385 2386 private void adjustFocusedActivityLocked(ActivityRecord r) { 2387 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2388 ActivityRecord next = topRunningActivityLocked(null); 2389 if (next != r) { 2390 final TaskRecord task = r.task; 2391 if (r.frontOfTask && task == topTask() && task.isOverHomeStack()) { 2392 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 2393 } 2394 } 2395 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2396 if (top != null) { 2397 mService.setFocusedActivityLocked(top); 2398 } 2399 } 2400 } 2401 2402 final void stopActivityLocked(ActivityRecord r) { 2403 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2404 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2405 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2406 if (!r.finishing) { 2407 if (!mService.isSleeping()) { 2408 if (DEBUG_STATES) { 2409 Slog.d(TAG, "no-history finish of " + r); 2410 } 2411 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2412 "no-history", false); 2413 } else { 2414 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2415 + " on stop because we're just sleeping"); 2416 } 2417 } 2418 } 2419 2420 if (r.app != null && r.app.thread != null) { 2421 adjustFocusedActivityLocked(r); 2422 r.resumeKeyDispatchingLocked(); 2423 try { 2424 r.stopped = false; 2425 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2426 + " (stop requested)"); 2427 r.state = ActivityState.STOPPING; 2428 if (DEBUG_VISBILITY) Slog.v( 2429 TAG, "Stopping visible=" + r.visible + " for " + r); 2430 if (!r.visible) { 2431 mWindowManager.setAppVisibility(r.appToken, false); 2432 } 2433 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2434 if (mService.isSleepingOrShuttingDown()) { 2435 r.setSleeping(true); 2436 } 2437 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2438 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2439 } catch (Exception e) { 2440 // Maybe just ignore exceptions here... if the process 2441 // has crashed, our death notification will clean things 2442 // up. 2443 Slog.w(TAG, "Exception thrown during pause", e); 2444 // Just in case, assume it to be stopped. 2445 r.stopped = true; 2446 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2447 r.state = ActivityState.STOPPED; 2448 if (r.configDestroy) { 2449 destroyActivityLocked(r, true, "stop-except"); 2450 } 2451 } 2452 } 2453 } 2454 2455 /** 2456 * @return Returns true if the activity is being finished, false if for 2457 * some reason it is being left as-is. 2458 */ 2459 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2460 Intent resultData, String reason, boolean oomAdj) { 2461 ActivityRecord r = isInStackLocked(token); 2462 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2463 TAG, "Finishing activity token=" + token + " r=" 2464 + ", result=" + resultCode + ", data=" + resultData 2465 + ", reason=" + reason); 2466 if (r == null) { 2467 return false; 2468 } 2469 2470 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2471 return true; 2472 } 2473 2474 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2475 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2476 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2477 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2478 ActivityRecord r = activities.get(activityNdx); 2479 if (r.resultTo == self && r.requestCode == requestCode) { 2480 if ((r.resultWho == null && resultWho == null) || 2481 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2482 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2483 false); 2484 } 2485 } 2486 } 2487 } 2488 mService.updateOomAdjLocked(); 2489 } 2490 2491 final void finishTopRunningActivityLocked(ProcessRecord app) { 2492 ActivityRecord r = topRunningActivityLocked(null); 2493 if (r != null && r.app == app) { 2494 // If the top running activity is from this crashing 2495 // process, then terminate it to avoid getting in a loop. 2496 Slog.w(TAG, " Force finishing activity " 2497 + r.intent.getComponent().flattenToShortString()); 2498 int taskNdx = mTaskHistory.indexOf(r.task); 2499 int activityNdx = r.task.mActivities.indexOf(r); 2500 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2501 // Also terminate any activities below it that aren't yet 2502 // stopped, to avoid a situation where one will get 2503 // re-start our crashing activity once it gets resumed again. 2504 --activityNdx; 2505 if (activityNdx < 0) { 2506 do { 2507 --taskNdx; 2508 if (taskNdx < 0) { 2509 break; 2510 } 2511 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2512 } while (activityNdx < 0); 2513 } 2514 if (activityNdx >= 0) { 2515 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2516 if (r.state == ActivityState.RESUMED 2517 || r.state == ActivityState.PAUSING 2518 || r.state == ActivityState.PAUSED) { 2519 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2520 Slog.w(TAG, " Force finishing activity " 2521 + r.intent.getComponent().flattenToShortString()); 2522 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2523 } 2524 } 2525 } 2526 } 2527 } 2528 2529 final void finishVoiceTask(IVoiceInteractionSession session) { 2530 IBinder sessionBinder = session.asBinder(); 2531 boolean didOne = false; 2532 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2533 TaskRecord tr = mTaskHistory.get(taskNdx); 2534 if (tr.voiceSession != null && tr.voiceSession.asBinder() == sessionBinder) { 2535 for (int activityNdx = tr.mActivities.size() - 1; activityNdx >= 0; --activityNdx) { 2536 ActivityRecord r = tr.mActivities.get(activityNdx); 2537 if (!r.finishing) { 2538 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "finish-voice", 2539 false); 2540 didOne = true; 2541 } 2542 } 2543 } 2544 } 2545 if (didOne) { 2546 mService.updateOomAdjLocked(); 2547 } 2548 } 2549 2550 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2551 ArrayList<ActivityRecord> activities = r.task.mActivities; 2552 for (int index = activities.indexOf(r); index >= 0; --index) { 2553 ActivityRecord cur = activities.get(index); 2554 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2555 break; 2556 } 2557 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2558 } 2559 return true; 2560 } 2561 2562 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2563 // send the result 2564 ActivityRecord resultTo = r.resultTo; 2565 if (resultTo != null) { 2566 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2567 + " who=" + r.resultWho + " req=" + r.requestCode 2568 + " res=" + resultCode + " data=" + resultData); 2569 if (resultTo.userId != r.userId) { 2570 if (resultData != null) { 2571 resultData.prepareToLeaveUser(r.userId); 2572 } 2573 } 2574 if (r.info.applicationInfo.uid > 0) { 2575 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2576 resultTo.packageName, resultData, 2577 resultTo.getUriPermissionsLocked(), resultTo.userId); 2578 } 2579 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2580 resultData); 2581 r.resultTo = null; 2582 } 2583 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2584 2585 // Make sure this HistoryRecord is not holding on to other resources, 2586 // because clients have remote IPC references to this object so we 2587 // can't assume that will go away and want to avoid circular IPC refs. 2588 r.results = null; 2589 r.pendingResults = null; 2590 r.newIntents = null; 2591 r.icicle = null; 2592 } 2593 2594 /** 2595 * @return Returns true if this activity has been removed from the history 2596 * list, or false if it is still in the list and will be removed later. 2597 */ 2598 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2599 String reason, boolean oomAdj) { 2600 if (r.finishing) { 2601 Slog.w(TAG, "Duplicate finish request for " + r); 2602 return false; 2603 } 2604 2605 r.makeFinishing(); 2606 final TaskRecord task = r.task; 2607 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2608 r.userId, System.identityHashCode(r), 2609 task.taskId, r.shortComponentName, reason); 2610 final ArrayList<ActivityRecord> activities = task.mActivities; 2611 final int index = activities.indexOf(r); 2612 if (index < (activities.size() - 1)) { 2613 task.setFrontOfTask(); 2614 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2615 // If the caller asked that this activity (and all above it) 2616 // be cleared when the task is reset, don't lose that information, 2617 // but propagate it up to the next activity. 2618 ActivityRecord next = activities.get(index+1); 2619 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2620 } 2621 } 2622 2623 r.pauseKeyDispatchingLocked(); 2624 2625 adjustFocusedActivityLocked(r); 2626 2627 finishActivityResultsLocked(r, resultCode, resultData); 2628 2629 if (mResumedActivity == r) { 2630 boolean endTask = index <= 0; 2631 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2632 "Prepare close transition: finishing " + r); 2633 mWindowManager.prepareAppTransition(endTask 2634 ? AppTransition.TRANSIT_TASK_CLOSE 2635 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2636 2637 // Tell window manager to prepare for this one to be removed. 2638 mWindowManager.setAppVisibility(r.appToken, false); 2639 2640 if (mPausingActivity == null) { 2641 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2642 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2643 startPausingLocked(false, false); 2644 } 2645 2646 if (endTask) { 2647 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2648 } 2649 } else if (r.state != ActivityState.PAUSING) { 2650 // If the activity is PAUSING, we will complete the finish once 2651 // it is done pausing; else we can just directly finish it here. 2652 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2653 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2654 } else { 2655 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2656 } 2657 2658 return false; 2659 } 2660 2661 static final int FINISH_IMMEDIATELY = 0; 2662 static final int FINISH_AFTER_PAUSE = 1; 2663 static final int FINISH_AFTER_VISIBLE = 2; 2664 2665 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2666 // First things first: if this activity is currently visible, 2667 // and the resumed activity is not yet visible, then hold off on 2668 // finishing until the resumed one becomes visible. 2669 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2670 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2671 mStackSupervisor.mStoppingActivities.add(r); 2672 if (mStackSupervisor.mStoppingActivities.size() > 3 2673 || r.frontOfTask && mTaskHistory.size() <= 1) { 2674 // If we already have a few activities waiting to stop, 2675 // then give up on things going idle and start clearing 2676 // them out. Or if r is the last of activity of the last task the stack 2677 // will be empty and must be cleared immediately. 2678 mStackSupervisor.scheduleIdleLocked(); 2679 } else { 2680 mStackSupervisor.checkReadyForSleepLocked(); 2681 } 2682 } 2683 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2684 + " (finish requested)"); 2685 r.state = ActivityState.STOPPING; 2686 if (oomAdj) { 2687 mService.updateOomAdjLocked(); 2688 } 2689 return r; 2690 } 2691 2692 // make sure the record is cleaned out of other places. 2693 mStackSupervisor.mStoppingActivities.remove(r); 2694 mStackSupervisor.mGoingToSleepActivities.remove(r); 2695 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2696 if (mResumedActivity == r) { 2697 mResumedActivity = null; 2698 } 2699 final ActivityState prevState = r.state; 2700 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2701 r.state = ActivityState.FINISHING; 2702 2703 if (mode == FINISH_IMMEDIATELY 2704 || prevState == ActivityState.STOPPED 2705 || prevState == ActivityState.INITIALIZING) { 2706 // If this activity is already stopped, we can just finish 2707 // it right now. 2708 r.makeFinishing(); 2709 boolean activityRemoved = destroyActivityLocked(r, true, "finish-imm"); 2710 if (activityRemoved) { 2711 mStackSupervisor.resumeTopActivitiesLocked(); 2712 } 2713 if (DEBUG_CONTAINERS) Slog.d(TAG, 2714 "destroyActivityLocked: finishCurrentActivityLocked r=" + r + 2715 " destroy returned removed=" + activityRemoved); 2716 return activityRemoved ? null : r; 2717 } 2718 2719 // Need to go through the full pause cycle to get this 2720 // activity into the stopped state and then finish it. 2721 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2722 mStackSupervisor.mFinishingActivities.add(r); 2723 r.resumeKeyDispatchingLocked(); 2724 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2725 return r; 2726 } 2727 2728 void finishAllActivitiesLocked() { 2729 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2730 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2731 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2732 final ActivityRecord r = activities.get(activityNdx); 2733 if (r.finishing) { 2734 continue; 2735 } 2736 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2737 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2738 } 2739 } 2740 } 2741 2742 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2743 Intent resultData) { 2744 final ActivityRecord srec = ActivityRecord.forToken(token); 2745 final TaskRecord task = srec.task; 2746 final ArrayList<ActivityRecord> activities = task.mActivities; 2747 final int start = activities.indexOf(srec); 2748 if (!mTaskHistory.contains(task) || (start < 0)) { 2749 return false; 2750 } 2751 int finishTo = start - 1; 2752 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2753 boolean foundParentInTask = false; 2754 final ComponentName dest = destIntent.getComponent(); 2755 if (start > 0 && dest != null) { 2756 for (int i = finishTo; i >= 0; i--) { 2757 ActivityRecord r = activities.get(i); 2758 if (r.info.packageName.equals(dest.getPackageName()) && 2759 r.info.name.equals(dest.getClassName())) { 2760 finishTo = i; 2761 parent = r; 2762 foundParentInTask = true; 2763 break; 2764 } 2765 } 2766 } 2767 2768 IActivityController controller = mService.mController; 2769 if (controller != null) { 2770 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2771 if (next != null) { 2772 // ask watcher if this is allowed 2773 boolean resumeOK = true; 2774 try { 2775 resumeOK = controller.activityResuming(next.packageName); 2776 } catch (RemoteException e) { 2777 mService.mController = null; 2778 Watchdog.getInstance().setActivityController(null); 2779 } 2780 2781 if (!resumeOK) { 2782 return false; 2783 } 2784 } 2785 } 2786 final long origId = Binder.clearCallingIdentity(); 2787 for (int i = start; i > finishTo; i--) { 2788 ActivityRecord r = activities.get(i); 2789 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2790 // Only return the supplied result for the first activity finished 2791 resultCode = Activity.RESULT_CANCELED; 2792 resultData = null; 2793 } 2794 2795 if (parent != null && foundParentInTask) { 2796 final int parentLaunchMode = parent.info.launchMode; 2797 final int destIntentFlags = destIntent.getFlags(); 2798 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2799 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2800 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2801 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2802 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2803 } else { 2804 try { 2805 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2806 destIntent.getComponent(), 0, srec.userId); 2807 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2808 null, aInfo, null, null, parent.appToken, null, 2809 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2810 0, null, true, null, null); 2811 foundParentInTask = res == ActivityManager.START_SUCCESS; 2812 } catch (RemoteException e) { 2813 foundParentInTask = false; 2814 } 2815 requestFinishActivityLocked(parent.appToken, resultCode, 2816 resultData, "navigate-up", true); 2817 } 2818 } 2819 Binder.restoreCallingIdentity(origId); 2820 return foundParentInTask; 2821 } 2822 /** 2823 * Perform the common clean-up of an activity record. This is called both 2824 * as part of destroyActivityLocked() (when destroying the client-side 2825 * representation) and cleaning things up as a result of its hosting 2826 * processing going away, in which case there is no remaining client-side 2827 * state to destroy so only the cleanup here is needed. 2828 */ 2829 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2830 boolean setState) { 2831 if (mResumedActivity == r) { 2832 mResumedActivity = null; 2833 } 2834 if (mPausingActivity == r) { 2835 mPausingActivity = null; 2836 } 2837 mService.clearFocusedActivity(r); 2838 2839 r.configDestroy = false; 2840 r.frozenBeforeDestroy = false; 2841 2842 if (setState) { 2843 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2844 r.state = ActivityState.DESTROYED; 2845 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2846 r.app = null; 2847 } 2848 2849 // Make sure this record is no longer in the pending finishes list. 2850 // This could happen, for example, if we are trimming activities 2851 // down to the max limit while they are still waiting to finish. 2852 mStackSupervisor.mFinishingActivities.remove(r); 2853 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2854 2855 // Remove any pending results. 2856 if (r.finishing && r.pendingResults != null) { 2857 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2858 PendingIntentRecord rec = apr.get(); 2859 if (rec != null) { 2860 mService.cancelIntentSenderLocked(rec, false); 2861 } 2862 } 2863 r.pendingResults = null; 2864 } 2865 2866 if (cleanServices) { 2867 cleanUpActivityServicesLocked(r); 2868 } 2869 2870 // Get rid of any pending idle timeouts. 2871 removeTimeoutsForActivityLocked(r); 2872 if (getMediaPlayer() == r) { 2873 mStackSupervisor.setMediaPlayingLocked(r, false); 2874 } 2875 } 2876 2877 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2878 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2879 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2880 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2881 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2882 r.finishLaunchTickingLocked(); 2883 } 2884 2885 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2886 mStackSupervisor.removeChildActivityContainers(r); 2887 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2888 r.makeFinishing(); 2889 if (DEBUG_ADD_REMOVE) { 2890 RuntimeException here = new RuntimeException("here"); 2891 here.fillInStackTrace(); 2892 Slog.i(TAG, "Removing activity " + r + " from stack"); 2893 } 2894 r.takeFromHistory(); 2895 removeTimeoutsForActivityLocked(r); 2896 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2897 r.state = ActivityState.DESTROYED; 2898 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2899 r.app = null; 2900 mWindowManager.removeAppToken(r.appToken); 2901 if (VALIDATE_TOKENS) { 2902 validateAppTokensLocked(); 2903 } 2904 final TaskRecord task = r.task; 2905 if (task != null && task.removeActivity(r)) { 2906 if (DEBUG_STACK) Slog.i(TAG, 2907 "removeActivityFromHistoryLocked: last activity removed from " + this); 2908 if (mStackSupervisor.isFrontStack(this) && task == topTask() && 2909 task.isOverHomeStack()) { 2910 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 2911 } 2912 removeTask(task); 2913 } 2914 cleanUpActivityServicesLocked(r); 2915 r.removeUriPermissionsLocked(); 2916 } 2917 2918 /** 2919 * Perform clean-up of service connections in an activity record. 2920 */ 2921 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2922 // Throw away any services that have been bound by this activity. 2923 if (r.connections != null) { 2924 Iterator<ConnectionRecord> it = r.connections.iterator(); 2925 while (it.hasNext()) { 2926 ConnectionRecord c = it.next(); 2927 mService.mServices.removeConnectionLocked(c, null, r); 2928 } 2929 r.connections = null; 2930 } 2931 } 2932 2933 final void scheduleDestroyActivities(ProcessRecord owner, String reason) { 2934 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2935 msg.obj = new ScheduleDestroyArgs(owner, reason); 2936 mHandler.sendMessage(msg); 2937 } 2938 2939 final void destroyActivitiesLocked(ProcessRecord owner, String reason) { 2940 boolean lastIsOpaque = false; 2941 boolean activityRemoved = false; 2942 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2943 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2944 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2945 final ActivityRecord r = activities.get(activityNdx); 2946 if (r.finishing) { 2947 continue; 2948 } 2949 if (r.fullscreen) { 2950 lastIsOpaque = true; 2951 } 2952 if (owner != null && r.app != owner) { 2953 continue; 2954 } 2955 if (!lastIsOpaque) { 2956 continue; 2957 } 2958 // We can destroy this one if we have its icicle saved and 2959 // it is not in the process of pausing/stopping/finishing. 2960 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2961 && r.haveState && !r.visible && r.stopped 2962 && r.state != ActivityState.DESTROYING 2963 && r.state != ActivityState.DESTROYED) { 2964 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2965 + " resumed=" + mResumedActivity 2966 + " pausing=" + mPausingActivity); 2967 if (destroyActivityLocked(r, true, reason)) { 2968 activityRemoved = true; 2969 } 2970 } 2971 } 2972 } 2973 if (activityRemoved) { 2974 mStackSupervisor.resumeTopActivitiesLocked(); 2975 } 2976 } 2977 2978 /** 2979 * Destroy the current CLIENT SIDE instance of an activity. This may be 2980 * called both when actually finishing an activity, or when performing 2981 * a configuration switch where we destroy the current client-side object 2982 * but then create a new client-side object for this same HistoryRecord. 2983 */ 2984 final boolean destroyActivityLocked(ActivityRecord r, boolean removeFromApp, String reason) { 2985 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2986 TAG, "Removing activity from " + reason + ": token=" + r 2987 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2988 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2989 r.userId, System.identityHashCode(r), 2990 r.task.taskId, r.shortComponentName, reason); 2991 2992 boolean removedFromHistory = false; 2993 2994 cleanUpActivityLocked(r, false, false); 2995 2996 final boolean hadApp = r.app != null; 2997 2998 if (hadApp) { 2999 if (removeFromApp) { 3000 r.app.activities.remove(r); 3001 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 3002 mService.mHeavyWeightProcess = null; 3003 mService.mHandler.sendEmptyMessage( 3004 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 3005 } 3006 if (r.app.activities.isEmpty()) { 3007 // No longer have activities, so update LRU list and oom adj. 3008 mService.updateLruProcessLocked(r.app, false, null); 3009 mService.updateOomAdjLocked(); 3010 } 3011 } 3012 3013 boolean skipDestroy = false; 3014 3015 try { 3016 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 3017 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 3018 r.configChangeFlags); 3019 } catch (Exception e) { 3020 // We can just ignore exceptions here... if the process 3021 // has crashed, our death notification will clean things 3022 // up. 3023 //Slog.w(TAG, "Exception thrown during finish", e); 3024 if (r.finishing) { 3025 removeActivityFromHistoryLocked(r); 3026 removedFromHistory = true; 3027 skipDestroy = true; 3028 } 3029 } 3030 3031 r.nowVisible = false; 3032 3033 // If the activity is finishing, we need to wait on removing it 3034 // from the list to give it a chance to do its cleanup. During 3035 // that time it may make calls back with its token so we need to 3036 // be able to find it on the list and so we don't want to remove 3037 // it from the list yet. Otherwise, we can just immediately put 3038 // it in the destroyed state since we are not removing it from the 3039 // list. 3040 if (r.finishing && !skipDestroy) { 3041 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 3042 + " (destroy requested)"); 3043 r.state = ActivityState.DESTROYING; 3044 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 3045 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 3046 } else { 3047 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 3048 r.state = ActivityState.DESTROYED; 3049 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3050 r.app = null; 3051 } 3052 } else { 3053 // remove this record from the history. 3054 if (r.finishing) { 3055 removeActivityFromHistoryLocked(r); 3056 removedFromHistory = true; 3057 } else { 3058 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 3059 r.state = ActivityState.DESTROYED; 3060 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3061 r.app = null; 3062 } 3063 } 3064 3065 r.configChangeFlags = 0; 3066 3067 if (!mLRUActivities.remove(r) && hadApp) { 3068 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 3069 } 3070 3071 return removedFromHistory; 3072 } 3073 3074 final void activityDestroyedLocked(IBinder token) { 3075 final long origId = Binder.clearCallingIdentity(); 3076 try { 3077 ActivityRecord r = ActivityRecord.forToken(token); 3078 if (r != null) { 3079 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3080 } 3081 if (DEBUG_CONTAINERS) Slog.d(TAG, "activityDestroyedLocked: r=" + r); 3082 3083 if (isInStackLocked(token) != null) { 3084 if (r.state == ActivityState.DESTROYING) { 3085 cleanUpActivityLocked(r, true, false); 3086 removeActivityFromHistoryLocked(r); 3087 } 3088 } 3089 mStackSupervisor.resumeTopActivitiesLocked(); 3090 } finally { 3091 Binder.restoreCallingIdentity(origId); 3092 } 3093 } 3094 3095 void releaseMediaResources() { 3096 if (isMediaPlaying() && !mHandler.hasMessages(STOP_MEDIA_PLAYING_TIMEOUT_MSG)) { 3097 final ActivityRecord r = getMediaPlayer(); 3098 if (DEBUG_STATES) Slog.d(TAG, "releaseMediaResources activtyDisplay=" + 3099 mActivityContainer.mActivityDisplay + " mediaPlayer=" + r + " app=" + r.app + 3100 " thread=" + r.app.thread); 3101 if (r != null && r.app != null && r.app.thread != null) { 3102 try { 3103 r.app.thread.scheduleStopMediaPlaying(r.appToken); 3104 } catch (RemoteException e) { 3105 } 3106 mHandler.sendEmptyMessageDelayed(STOP_MEDIA_PLAYING_TIMEOUT_MSG, 500); 3107 } else { 3108 Slog.e(TAG, "releaseMediaResources: activity " + r + " no longer running"); 3109 mediaResourcesReleased(r.appToken); 3110 } 3111 } 3112 } 3113 3114 final void mediaResourcesReleased(IBinder token) { 3115 mHandler.removeMessages(STOP_MEDIA_PLAYING_TIMEOUT_MSG); 3116 final ActivityRecord r = getMediaPlayer(); 3117 if (r != null) { 3118 mStackSupervisor.mStoppingActivities.add(r); 3119 setMediaPlayer(null); 3120 } 3121 mStackSupervisor.resumeTopActivitiesLocked(); 3122 } 3123 3124 boolean isMediaPlaying() { 3125 return isAttached() && mActivityContainer.mActivityDisplay.isMediaPlaying(); 3126 } 3127 3128 void setMediaPlayer(ActivityRecord r) { 3129 if (isAttached()) { 3130 mActivityContainer.mActivityDisplay.setMediaPlaying(r); 3131 } 3132 } 3133 3134 ActivityRecord getMediaPlayer() { 3135 return isAttached() ? mActivityContainer.mActivityDisplay.mMediaPlayingActivity : null; 3136 } 3137 3138 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3139 ProcessRecord app, String listName) { 3140 int i = list.size(); 3141 if (DEBUG_CLEANUP) Slog.v( 3142 TAG, "Removing app " + app + " from list " + listName 3143 + " with " + i + " entries"); 3144 while (i > 0) { 3145 i--; 3146 ActivityRecord r = list.get(i); 3147 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3148 if (r.app == app) { 3149 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3150 list.remove(i); 3151 removeTimeoutsForActivityLocked(r); 3152 } 3153 } 3154 } 3155 3156 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3157 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3158 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3159 "mStoppingActivities"); 3160 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3161 "mGoingToSleepActivities"); 3162 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3163 "mWaitingVisibleActivities"); 3164 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3165 "mFinishingActivities"); 3166 3167 boolean hasVisibleActivities = false; 3168 3169 // Clean out the history list. 3170 int i = numActivities(); 3171 if (DEBUG_CLEANUP) Slog.v( 3172 TAG, "Removing app " + app + " from history with " + i + " entries"); 3173 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3174 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3175 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3176 final ActivityRecord r = activities.get(activityNdx); 3177 --i; 3178 if (DEBUG_CLEANUP) Slog.v( 3179 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3180 if (r.app == app) { 3181 boolean remove; 3182 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3183 // Don't currently have state for the activity, or 3184 // it is finishing -- always remove it. 3185 remove = true; 3186 } else if (r.launchCount > 2 && 3187 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3188 // We have launched this activity too many times since it was 3189 // able to run, so give up and remove it. 3190 remove = true; 3191 } else { 3192 // The process may be gone, but the activity lives on! 3193 remove = false; 3194 } 3195 if (remove) { 3196 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3197 RuntimeException here = new RuntimeException("here"); 3198 here.fillInStackTrace(); 3199 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3200 + ": haveState=" + r.haveState 3201 + " stateNotNeeded=" + r.stateNotNeeded 3202 + " finishing=" + r.finishing 3203 + " state=" + r.state, here); 3204 } 3205 if (!r.finishing) { 3206 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3207 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3208 r.userId, System.identityHashCode(r), 3209 r.task.taskId, r.shortComponentName, 3210 "proc died without state saved"); 3211 if (r.state == ActivityState.RESUMED) { 3212 mService.updateUsageStats(r, false); 3213 } 3214 } 3215 removeActivityFromHistoryLocked(r); 3216 3217 } else { 3218 // We have the current state for this activity, so 3219 // it can be restarted later when needed. 3220 if (localLOGV) Slog.v( 3221 TAG, "Keeping entry, setting app to null"); 3222 if (r.visible) { 3223 hasVisibleActivities = true; 3224 } 3225 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3226 + r); 3227 r.app = null; 3228 r.nowVisible = false; 3229 if (!r.haveState) { 3230 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3231 "App died, clearing saved state of " + r); 3232 r.icicle = null; 3233 } 3234 } 3235 3236 cleanUpActivityLocked(r, true, true); 3237 } 3238 } 3239 } 3240 3241 return hasVisibleActivities; 3242 } 3243 3244 final void updateTransitLocked(int transit, Bundle options) { 3245 if (options != null) { 3246 ActivityRecord r = topRunningActivityLocked(null); 3247 if (r != null && r.state != ActivityState.RESUMED) { 3248 r.updateOptionsLocked(options); 3249 } else { 3250 ActivityOptions.abort(options); 3251 } 3252 } 3253 mWindowManager.prepareAppTransition(transit, false); 3254 } 3255 3256 void updateTaskMovement(TaskRecord task, boolean toFront) { 3257 if (task.isPersistable) { 3258 task.mLastTimeMoved = System.currentTimeMillis(); 3259 // Sign is used to keep tasks sorted when persisted. Tasks sent to the bottom most 3260 // recently will be most negative, tasks sent to the bottom before that will be less 3261 // negative. Similarly for recent tasks moved to the top which will be most positive. 3262 if (!toFront) { 3263 task.mLastTimeMoved *= -1; 3264 } 3265 } 3266 } 3267 3268 void moveHomeStackTaskToTop(int homeStackTaskType) { 3269 final int top = mTaskHistory.size() - 1; 3270 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3271 final TaskRecord task = mTaskHistory.get(taskNdx); 3272 if (task.taskType == homeStackTaskType) { 3273 if (DEBUG_TASKS || DEBUG_STACK) 3274 Slog.d(TAG, "moveHomeStackTaskToTop: moving " + task); 3275 mTaskHistory.remove(taskNdx); 3276 mTaskHistory.add(top, task); 3277 updateTaskMovement(task, true); 3278 mWindowManager.moveTaskToTop(task.taskId); 3279 return; 3280 } 3281 } 3282 } 3283 3284 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3285 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3286 3287 final int numTasks = mTaskHistory.size(); 3288 final int index = mTaskHistory.indexOf(tr); 3289 if (numTasks == 0 || index < 0) { 3290 // nothing to do! 3291 if (reason != null && 3292 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3293 ActivityOptions.abort(options); 3294 } else { 3295 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3296 } 3297 return; 3298 } 3299 3300 moveToFront(); 3301 3302 // Shift all activities with this task up to the top 3303 // of the stack, keeping them in the same internal order. 3304 insertTaskAtTop(tr); 3305 3306 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3307 if (reason != null && 3308 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3309 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3310 ActivityRecord r = topRunningActivityLocked(null); 3311 if (r != null) { 3312 mNoAnimActivities.add(r); 3313 } 3314 ActivityOptions.abort(options); 3315 } else { 3316 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3317 } 3318 3319 mWindowManager.moveTaskToTop(tr.taskId); 3320 3321 mStackSupervisor.resumeTopActivitiesLocked(); 3322 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3323 3324 if (VALIDATE_TOKENS) { 3325 validateAppTokensLocked(); 3326 } 3327 } 3328 3329 /** 3330 * Worker method for rearranging history stack. Implements the function of moving all 3331 * activities for a specific task (gathering them if disjoint) into a single group at the 3332 * bottom of the stack. 3333 * 3334 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3335 * to premeptively cancel the move. 3336 * 3337 * @param taskId The taskId to collect and move to the bottom. 3338 * @return Returns true if the move completed, false if not. 3339 */ 3340 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3341 final TaskRecord tr = taskForIdLocked(taskId); 3342 if (tr == null) { 3343 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3344 return false; 3345 } 3346 3347 Slog.i(TAG, "moveTaskToBack: " + tr); 3348 3349 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3350 3351 // If we have a watcher, preflight the move before committing to it. First check 3352 // for *other* available tasks, but if none are available, then try again allowing the 3353 // current task to be selected. 3354 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3355 ActivityRecord next = topRunningActivityLocked(null, taskId); 3356 if (next == null) { 3357 next = topRunningActivityLocked(null, 0); 3358 } 3359 if (next != null) { 3360 // ask watcher if this is allowed 3361 boolean moveOK = true; 3362 try { 3363 moveOK = mService.mController.activityResuming(next.packageName); 3364 } catch (RemoteException e) { 3365 mService.mController = null; 3366 Watchdog.getInstance().setActivityController(null); 3367 } 3368 if (!moveOK) { 3369 return false; 3370 } 3371 } 3372 } 3373 3374 if (DEBUG_TRANSITION) Slog.v(TAG, 3375 "Prepare to back transition: task=" + taskId); 3376 3377 mTaskHistory.remove(tr); 3378 mTaskHistory.add(0, tr); 3379 updateTaskMovement(tr, false); 3380 3381 // There is an assumption that moving a task to the back moves it behind the home activity. 3382 // We make sure here that some activity in the stack will launch home. 3383 int numTasks = mTaskHistory.size(); 3384 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3385 final TaskRecord task = mTaskHistory.get(taskNdx); 3386 if (task.isOverHomeStack()) { 3387 break; 3388 } 3389 if (taskNdx == 1) { 3390 // Set the last task before tr to go to home. 3391 task.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3392 } 3393 } 3394 3395 if (reason != null && 3396 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3397 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3398 ActivityRecord r = topRunningActivityLocked(null); 3399 if (r != null) { 3400 mNoAnimActivities.add(r); 3401 } 3402 } else { 3403 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3404 } 3405 mWindowManager.moveTaskToBottom(taskId); 3406 3407 if (VALIDATE_TOKENS) { 3408 validateAppTokensLocked(); 3409 } 3410 3411 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3412 if (task == tr && tr.isOverHomeStack() || numTasks <= 1 && isOnHomeDisplay()) { 3413 final int taskToReturnTo = tr.getTaskToReturnTo(); 3414 tr.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 3415 return mStackSupervisor.resumeHomeStackTask(taskToReturnTo, null); 3416 } 3417 3418 mStackSupervisor.resumeTopActivitiesLocked(); 3419 return true; 3420 } 3421 3422 static final void logStartActivity(int tag, ActivityRecord r, 3423 TaskRecord task) { 3424 final Uri data = r.intent.getData(); 3425 final String strData = data != null ? data.toSafeString() : null; 3426 3427 EventLog.writeEvent(tag, 3428 r.userId, System.identityHashCode(r), task.taskId, 3429 r.shortComponentName, r.intent.getAction(), 3430 r.intent.getType(), strData, r.intent.getFlags()); 3431 } 3432 3433 /** 3434 * Make sure the given activity matches the current configuration. Returns 3435 * false if the activity had to be destroyed. Returns true if the 3436 * configuration is the same, or the activity will remain running as-is 3437 * for whatever reason. Ensures the HistoryRecord is updated with the 3438 * correct configuration and all other bookkeeping is handled. 3439 */ 3440 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3441 int globalChanges) { 3442 if (mConfigWillChange) { 3443 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3444 "Skipping config check (will change): " + r); 3445 return true; 3446 } 3447 3448 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3449 "Ensuring correct configuration: " + r); 3450 3451 // Short circuit: if the two configurations are the exact same 3452 // object (the common case), then there is nothing to do. 3453 Configuration newConfig = mService.mConfiguration; 3454 if (r.configuration == newConfig && !r.forceNewConfig) { 3455 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3456 "Configuration unchanged in " + r); 3457 return true; 3458 } 3459 3460 // We don't worry about activities that are finishing. 3461 if (r.finishing) { 3462 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3463 "Configuration doesn't matter in finishing " + r); 3464 r.stopFreezingScreenLocked(false); 3465 return true; 3466 } 3467 3468 // Okay we now are going to make this activity have the new config. 3469 // But then we need to figure out how it needs to deal with that. 3470 Configuration oldConfig = r.configuration; 3471 r.configuration = newConfig; 3472 3473 // Determine what has changed. May be nothing, if this is a config 3474 // that has come back from the app after going idle. In that case 3475 // we just want to leave the official config object now in the 3476 // activity and do nothing else. 3477 final int changes = oldConfig.diff(newConfig); 3478 if (changes == 0 && !r.forceNewConfig) { 3479 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3480 "Configuration no differences in " + r); 3481 return true; 3482 } 3483 3484 // If the activity isn't currently running, just leave the new 3485 // configuration and it will pick that up next time it starts. 3486 if (r.app == null || r.app.thread == null) { 3487 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3488 "Configuration doesn't matter not running " + r); 3489 r.stopFreezingScreenLocked(false); 3490 r.forceNewConfig = false; 3491 return true; 3492 } 3493 3494 // Figure out how to handle the changes between the configurations. 3495 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3496 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3497 + Integer.toHexString(changes) + ", handles=0x" 3498 + Integer.toHexString(r.info.getRealConfigChanged()) 3499 + ", newConfig=" + newConfig); 3500 } 3501 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3502 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3503 r.configChangeFlags |= changes; 3504 r.startFreezingScreenLocked(r.app, globalChanges); 3505 r.forceNewConfig = false; 3506 if (r.app == null || r.app.thread == null) { 3507 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3508 "Config is destroying non-running " + r); 3509 destroyActivityLocked(r, true, "config"); 3510 } else if (r.state == ActivityState.PAUSING) { 3511 // A little annoying: we are waiting for this activity to 3512 // finish pausing. Let's not do anything now, but just 3513 // flag that it needs to be restarted when done pausing. 3514 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3515 "Config is skipping already pausing " + r); 3516 r.configDestroy = true; 3517 return true; 3518 } else if (r.state == ActivityState.RESUMED) { 3519 // Try to optimize this case: the configuration is changing 3520 // and we need to restart the top, resumed activity. 3521 // Instead of doing the normal handshaking, just say 3522 // "restart!". 3523 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3524 "Config is relaunching resumed " + r); 3525 relaunchActivityLocked(r, r.configChangeFlags, true); 3526 r.configChangeFlags = 0; 3527 } else { 3528 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3529 "Config is relaunching non-resumed " + r); 3530 relaunchActivityLocked(r, r.configChangeFlags, false); 3531 r.configChangeFlags = 0; 3532 } 3533 3534 // All done... tell the caller we weren't able to keep this 3535 // activity around. 3536 return false; 3537 } 3538 3539 // Default case: the activity can handle this new configuration, so 3540 // hand it over. Note that we don't need to give it the new 3541 // configuration, since we always send configuration changes to all 3542 // process when they happen so it can just use whatever configuration 3543 // it last got. 3544 if (r.app != null && r.app.thread != null) { 3545 try { 3546 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3547 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3548 } catch (RemoteException e) { 3549 // If process died, whatever. 3550 } 3551 } 3552 r.stopFreezingScreenLocked(false); 3553 3554 return true; 3555 } 3556 3557 private boolean relaunchActivityLocked(ActivityRecord r, 3558 int changes, boolean andResume) { 3559 List<ResultInfo> results = null; 3560 List<Intent> newIntents = null; 3561 if (andResume) { 3562 results = r.results; 3563 newIntents = r.newIntents; 3564 } 3565 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3566 + " with results=" + results + " newIntents=" + newIntents 3567 + " andResume=" + andResume); 3568 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3569 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3570 r.task.taskId, r.shortComponentName); 3571 3572 r.startFreezingScreenLocked(r.app, 0); 3573 3574 mStackSupervisor.removeChildActivityContainers(r); 3575 3576 try { 3577 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3578 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3579 + r); 3580 r.forceNewConfig = false; 3581 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3582 changes, !andResume, new Configuration(mService.mConfiguration)); 3583 // Note: don't need to call pauseIfSleepingLocked() here, because 3584 // the caller will only pass in 'andResume' if this activity is 3585 // currently resumed, which implies we aren't sleeping. 3586 } catch (RemoteException e) { 3587 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3588 } 3589 3590 if (andResume) { 3591 r.results = null; 3592 r.newIntents = null; 3593 r.state = ActivityState.RESUMED; 3594 } else { 3595 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3596 r.state = ActivityState.PAUSED; 3597 } 3598 3599 return true; 3600 } 3601 3602 boolean willActivityBeVisibleLocked(IBinder token) { 3603 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3604 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3605 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3606 final ActivityRecord r = activities.get(activityNdx); 3607 if (r.appToken == token) { 3608 return true; 3609 } 3610 if (r.fullscreen && !r.finishing) { 3611 return false; 3612 } 3613 } 3614 } 3615 final ActivityRecord r = ActivityRecord.forToken(token); 3616 if (r == null) { 3617 return false; 3618 } 3619 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3620 + " would have returned true for r=" + r); 3621 return !r.finishing; 3622 } 3623 3624 void closeSystemDialogsLocked() { 3625 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3626 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3627 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3628 final ActivityRecord r = activities.get(activityNdx); 3629 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3630 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3631 } 3632 } 3633 } 3634 } 3635 3636 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3637 boolean didSomething = false; 3638 TaskRecord lastTask = null; 3639 ComponentName homeActivity = null; 3640 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3641 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3642 int numActivities = activities.size(); 3643 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3644 ActivityRecord r = activities.get(activityNdx); 3645 final boolean samePackage = r.packageName.equals(name) 3646 || (name == null && r.userId == userId); 3647 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3648 && (samePackage || r.task == lastTask) 3649 && (r.app == null || evenPersistent || !r.app.persistent)) { 3650 if (!doit) { 3651 if (r.finishing) { 3652 // If this activity is just finishing, then it is not 3653 // interesting as far as something to stop. 3654 continue; 3655 } 3656 return true; 3657 } 3658 if (r.isHomeActivity()) { 3659 if (homeActivity != null && homeActivity.equals(r.realActivity)) { 3660 Slog.i(TAG, "Skip force-stop again " + r); 3661 continue; 3662 } else { 3663 homeActivity = r.realActivity; 3664 } 3665 } 3666 didSomething = true; 3667 Slog.i(TAG, " Force finishing activity " + r); 3668 if (samePackage) { 3669 if (r.app != null) { 3670 r.app.removed = true; 3671 } 3672 r.app = null; 3673 } 3674 lastTask = r.task; 3675 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3676 true)) { 3677 // r has been deleted from mActivities, accommodate. 3678 --numActivities; 3679 --activityNdx; 3680 } 3681 } 3682 } 3683 } 3684 return didSomething; 3685 } 3686 3687 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3688 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3689 final TaskRecord task = mTaskHistory.get(taskNdx); 3690 ActivityRecord r = null; 3691 ActivityRecord top = null; 3692 int numActivities = 0; 3693 int numRunning = 0; 3694 final ArrayList<ActivityRecord> activities = task.mActivities; 3695 if (activities.isEmpty()) { 3696 continue; 3697 } 3698 if (!allowed && !task.isHomeTask() && task.creatorUid != callingUid) { 3699 continue; 3700 } 3701 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3702 r = activities.get(activityNdx); 3703 3704 // Initialize state for next task if needed. 3705 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3706 top = r; 3707 numActivities = numRunning = 0; 3708 } 3709 3710 // Add 'r' into the current task. 3711 numActivities++; 3712 if (r.app != null && r.app.thread != null) { 3713 numRunning++; 3714 } 3715 3716 if (localLOGV) Slog.v( 3717 TAG, r.intent.getComponent().flattenToShortString() 3718 + ": task=" + r.task); 3719 } 3720 3721 RunningTaskInfo ci = new RunningTaskInfo(); 3722 ci.id = task.taskId; 3723 ci.baseActivity = r.intent.getComponent(); 3724 ci.topActivity = top.intent.getComponent(); 3725 ci.lastActiveTime = task.lastActiveTime; 3726 3727 if (top.task != null) { 3728 ci.description = top.task.lastDescription; 3729 } 3730 ci.numActivities = numActivities; 3731 ci.numRunning = numRunning; 3732 //System.out.println( 3733 // "#" + maxNum + ": " + " descr=" + ci.description); 3734 list.add(ci); 3735 } 3736 } 3737 3738 public void unhandledBackLocked() { 3739 final int top = mTaskHistory.size() - 1; 3740 if (DEBUG_SWITCH) Slog.d( 3741 TAG, "Performing unhandledBack(): top activity at " + top); 3742 if (top >= 0) { 3743 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3744 int activityTop = activities.size() - 1; 3745 if (activityTop > 0) { 3746 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3747 "unhandled-back", true); 3748 } 3749 } 3750 } 3751 3752 /** 3753 * Reset local parameters because an app's activity died. 3754 * @param app The app of the activity that died. 3755 * @return result from removeHistoryRecordsForAppLocked. 3756 */ 3757 boolean handleAppDiedLocked(ProcessRecord app) { 3758 if (mPausingActivity != null && mPausingActivity.app == app) { 3759 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3760 "App died while pausing: " + mPausingActivity); 3761 mPausingActivity = null; 3762 } 3763 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3764 mLastPausedActivity = null; 3765 mLastNoHistoryActivity = null; 3766 } 3767 3768 return removeHistoryRecordsForAppLocked(app); 3769 } 3770 3771 void handleAppCrashLocked(ProcessRecord app) { 3772 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3773 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3774 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3775 final ActivityRecord r = activities.get(activityNdx); 3776 if (r.app == app) { 3777 Slog.w(TAG, " Force finishing activity " 3778 + r.intent.getComponent().flattenToShortString()); 3779 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3780 } 3781 } 3782 } 3783 } 3784 3785 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3786 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3787 boolean printed = false; 3788 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3789 final TaskRecord task = mTaskHistory.get(taskNdx); 3790 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3791 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3792 dumpClient, dumpPackage, needSep, header, 3793 " Task id #" + task.taskId); 3794 if (printed) { 3795 header = null; 3796 } 3797 } 3798 return printed; 3799 } 3800 3801 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3802 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3803 3804 if ("all".equals(name)) { 3805 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3806 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3807 } 3808 } else if ("top".equals(name)) { 3809 final int top = mTaskHistory.size() - 1; 3810 if (top >= 0) { 3811 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3812 int listTop = list.size() - 1; 3813 if (listTop >= 0) { 3814 activities.add(list.get(listTop)); 3815 } 3816 } 3817 } else { 3818 ItemMatcher matcher = new ItemMatcher(); 3819 matcher.build(name); 3820 3821 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3822 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3823 if (matcher.match(r1, r1.intent.getComponent())) { 3824 activities.add(r1); 3825 } 3826 } 3827 } 3828 } 3829 3830 return activities; 3831 } 3832 3833 ActivityRecord restartPackage(String packageName) { 3834 ActivityRecord starting = topRunningActivityLocked(null); 3835 3836 // All activities that came from the package must be 3837 // restarted as if there was a config change. 3838 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3839 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3840 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3841 final ActivityRecord a = activities.get(activityNdx); 3842 if (a.info.packageName.equals(packageName)) { 3843 a.forceNewConfig = true; 3844 if (starting != null && a == starting && a.visible) { 3845 a.startFreezingScreenLocked(starting.app, 3846 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3847 } 3848 } 3849 } 3850 } 3851 3852 return starting; 3853 } 3854 3855 void removeTask(TaskRecord task) { 3856 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3857 mWindowManager.removeTask(task.taskId); 3858 final ActivityRecord r = mResumedActivity; 3859 if (r != null && r.task == task) { 3860 mResumedActivity = null; 3861 } 3862 3863 final int taskNdx = mTaskHistory.indexOf(task); 3864 final int topTaskNdx = mTaskHistory.size() - 1; 3865 if (task.isOverHomeStack() && taskNdx < topTaskNdx) { 3866 final TaskRecord nextTask = mTaskHistory.get(taskNdx + 1); 3867 if (!nextTask.isOverHomeStack()) { 3868 nextTask.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3869 } 3870 } 3871 mTaskHistory.remove(task); 3872 updateTaskMovement(task, true); 3873 3874 if (task.mActivities.isEmpty()) { 3875 final boolean isVoiceSession = task.voiceSession != null; 3876 if (isVoiceSession) { 3877 try { 3878 task.voiceSession.taskFinished(task.intent, task.taskId); 3879 } catch (RemoteException e) { 3880 } 3881 } 3882 if (task.autoRemoveFromRecents() || isVoiceSession) { 3883 // Task creator asked to remove this when done, or this task was a voice 3884 // interaction, so it should not remain on the recent tasks list. 3885 mService.mRecentTasks.remove(task); 3886 task.closeRecentsChain(); 3887 } 3888 } 3889 3890 if (mTaskHistory.isEmpty()) { 3891 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3892 if (isOnHomeDisplay()) { 3893 mStackSupervisor.moveHomeStack(!isHomeStack()); 3894 } 3895 if (mStacks != null) { 3896 mStacks.remove(this); 3897 mStacks.add(0, this); 3898 } 3899 mActivityContainer.onTaskListEmptyLocked(); 3900 } 3901 } 3902 3903 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 3904 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 3905 boolean toTop) { 3906 TaskRecord task = new TaskRecord(mService, taskId, info, intent, voiceSession, 3907 voiceInteractor); 3908 addTask(task, toTop, false); 3909 return task; 3910 } 3911 3912 ArrayList<TaskRecord> getAllTasks() { 3913 return new ArrayList<TaskRecord>(mTaskHistory); 3914 } 3915 3916 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 3917 task.stack = this; 3918 if (toTop) { 3919 insertTaskAtTop(task); 3920 } else { 3921 mTaskHistory.add(0, task); 3922 updateTaskMovement(task, false); 3923 } 3924 if (!moving && task.voiceSession != null) { 3925 try { 3926 task.voiceSession.taskStarted(task.intent, task.taskId); 3927 } catch (RemoteException e) { 3928 } 3929 } 3930 } 3931 3932 public int getStackId() { 3933 return mStackId; 3934 } 3935 3936 @Override 3937 public String toString() { 3938 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3939 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3940 } 3941} 3942