ActivityStack.java revision b9a6c8ad99c7885dccc23223068c0a551f350cd5
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.ActivityStackSupervisor.DEBUG_ADD_REMOVE; 34import static com.android.server.am.ActivityStackSupervisor.DEBUG_APP; 35import static com.android.server.am.ActivityStackSupervisor.DEBUG_SAVED_STATE; 36import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 37import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 38 39import android.service.voice.IVoiceInteractionSession; 40import com.android.internal.app.IVoiceInteractor; 41import com.android.internal.os.BatteryStatsImpl; 42import com.android.server.Watchdog; 43import com.android.server.am.ActivityManagerService.ItemMatcher; 44import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 45import com.android.server.wm.AppTransition; 46import com.android.server.wm.TaskGroup; 47import com.android.server.wm.WindowManagerService; 48 49import android.app.Activity; 50import android.app.ActivityManager; 51import android.app.ActivityOptions; 52import android.app.AppGlobals; 53import android.app.IActivityController; 54import android.app.ResultInfo; 55import android.app.ActivityManager.RunningTaskInfo; 56import android.content.ComponentName; 57import android.content.Intent; 58import android.content.pm.ActivityInfo; 59import android.content.pm.PackageManager; 60import android.content.res.Configuration; 61import android.content.res.Resources; 62import android.graphics.Bitmap; 63import android.net.Uri; 64import android.os.Binder; 65import android.os.Bundle; 66import android.os.Debug; 67import android.os.Handler; 68import android.os.IBinder; 69import android.os.Looper; 70import android.os.Message; 71import android.os.PersistableBundle; 72import android.os.RemoteException; 73import android.os.SystemClock; 74import android.os.Trace; 75import android.os.UserHandle; 76import android.util.EventLog; 77import android.util.Slog; 78import android.view.Display; 79 80import java.io.FileDescriptor; 81import java.io.PrintWriter; 82import java.lang.ref.WeakReference; 83import java.util.ArrayList; 84import java.util.Iterator; 85import java.util.List; 86import java.util.Objects; 87 88/** 89 * State and management of a single stack of activities. 90 */ 91final class ActivityStack { 92 93 // Ticks during which we check progress while waiting for an app to launch. 94 static final int LAUNCH_TICK = 500; 95 96 // How long we wait until giving up on the last activity to pause. This 97 // is short because it directly impacts the responsiveness of starting the 98 // next activity. 99 static final int PAUSE_TIMEOUT = 500; 100 101 // How long we wait for the activity to tell us it has stopped before 102 // giving up. This is a good amount of time because we really need this 103 // from the application in order to get its saved state. 104 static final int STOP_TIMEOUT = 10*1000; 105 106 // How long we wait until giving up on an activity telling us it has 107 // finished destroying itself. 108 static final int DESTROY_TIMEOUT = 10*1000; 109 110 // How long until we reset a task when the user returns to it. Currently 111 // disabled. 112 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 113 114 // How long between activity launches that we consider safe to not warn 115 // the user about an unexpected activity being launched on top. 116 static final long START_WARN_TIME = 5*1000; 117 118 // Set to false to disable the preview that is shown while a new activity 119 // is being started. 120 static final boolean SHOW_APP_STARTING_PREVIEW = true; 121 122 // How long to wait for all background Activities to redraw following a call to 123 // convertToTranslucent(). 124 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 125 126 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 127 128 enum ActivityState { 129 INITIALIZING, 130 RESUMED, 131 PAUSING, 132 PAUSED, 133 STOPPING, 134 STOPPED, 135 FINISHING, 136 DESTROYING, 137 DESTROYED 138 } 139 140 final ActivityManagerService mService; 141 final WindowManagerService mWindowManager; 142 143 /** 144 * The back history of all previous (and possibly still 145 * running) activities. It contains #TaskRecord objects. 146 */ 147 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 148 149 /** 150 * Used for validating app tokens with window manager. 151 */ 152 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 153 154 /** 155 * List of running activities, sorted by recent usage. 156 * The first entry in the list is the least recently used. 157 * It contains HistoryRecord objects. 158 */ 159 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 160 161 /** 162 * Animations that for the current transition have requested not to 163 * be considered for the transition animation. 164 */ 165 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 166 167 /** 168 * When we are in the process of pausing an activity, before starting the 169 * next one, this variable holds the activity that is currently being paused. 170 */ 171 ActivityRecord mPausingActivity = null; 172 173 /** 174 * This is the last activity that we put into the paused state. This is 175 * used to determine if we need to do an activity transition while sleeping, 176 * when we normally hold the top activity paused. 177 */ 178 ActivityRecord mLastPausedActivity = null; 179 180 /** 181 * Activities that specify No History must be removed once the user navigates away from them. 182 * If the device goes to sleep with such an activity in the paused state then we save it here 183 * and finish it later if another activity replaces it on wakeup. 184 */ 185 ActivityRecord mLastNoHistoryActivity = null; 186 187 /** 188 * Current activity that is resumed, or null if there is none. 189 */ 190 ActivityRecord mResumedActivity = null; 191 192 /** 193 * This is the last activity that has been started. It is only used to 194 * identify when multiple activities are started at once so that the user 195 * can be warned they may not be in the activity they think they are. 196 */ 197 ActivityRecord mLastStartedActivity = null; 198 199 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 200 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 201 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 202 // Activity in mTranslucentActivityWaiting is notified via 203 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 204 // background activity being drawn then the same call will be made with a true value. 205 ActivityRecord mTranslucentActivityWaiting = null; 206 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 207 new ArrayList<ActivityRecord>(); 208 // Options passed from the caller of the convertToTranslucent to the activity that will 209 // appear below it. 210 ActivityOptions mReturningActivityOptions = null; 211 212 /** 213 * Set when we know we are going to be calling updateConfiguration() 214 * soon, so want to skip intermediate config checks. 215 */ 216 boolean mConfigWillChange; 217 218 long mLaunchStartTime = 0; 219 long mFullyDrawnStartTime = 0; 220 221 /** 222 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 223 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 224 */ 225 private ActivityRecord mLastScreenshotActivity = null; 226 private Bitmap mLastScreenshotBitmap = null; 227 228 int mThumbnailWidth = -1; 229 int mThumbnailHeight = -1; 230 231 int mCurrentUser; 232 233 final int mStackId; 234 final ActivityContainer mActivityContainer; 235 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 236 ArrayList<ActivityStack> mStacks; 237 /** The attached Display's unique identifier, or -1 if detached */ 238 int mDisplayId; 239 240 /** Run all ActivityStacks through this */ 241 final ActivityStackSupervisor mStackSupervisor; 242 243 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 244 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 245 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 246 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 247 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 248 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 249 250 static class ScheduleDestroyArgs { 251 final ProcessRecord mOwner; 252 final boolean mOomAdj; 253 final String mReason; 254 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 255 mOwner = owner; 256 mOomAdj = oomAdj; 257 mReason = reason; 258 } 259 } 260 261 final Handler mHandler; 262 263 final class ActivityStackHandler extends Handler { 264 //public Handler() { 265 // if (localLOGV) Slog.v(TAG, "Handler started!"); 266 //} 267 ActivityStackHandler(Looper looper) { 268 super(looper); 269 } 270 271 @Override 272 public void handleMessage(Message msg) { 273 switch (msg.what) { 274 case PAUSE_TIMEOUT_MSG: { 275 ActivityRecord r = (ActivityRecord)msg.obj; 276 // We don't at this point know if the activity is fullscreen, 277 // so we need to be conservative and assume it isn't. 278 Slog.w(TAG, "Activity pause timeout for " + r); 279 synchronized (mService) { 280 if (r.app != null) { 281 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 282 } 283 activityPausedLocked(r.appToken, true, r.persistentState); 284 } 285 } break; 286 case LAUNCH_TICK_MSG: { 287 ActivityRecord r = (ActivityRecord)msg.obj; 288 synchronized (mService) { 289 if (r.continueLaunchTickingLocked()) { 290 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 291 } 292 } 293 } break; 294 case DESTROY_TIMEOUT_MSG: { 295 ActivityRecord r = (ActivityRecord)msg.obj; 296 // We don't at this point know if the activity is fullscreen, 297 // so we need to be conservative and assume it isn't. 298 Slog.w(TAG, "Activity destroy timeout for " + r); 299 synchronized (mService) { 300 activityDestroyedLocked(r != null ? r.appToken : null); 301 } 302 } break; 303 case STOP_TIMEOUT_MSG: { 304 ActivityRecord r = (ActivityRecord)msg.obj; 305 // We don't at this point know if the activity is fullscreen, 306 // so we need to be conservative and assume it isn't. 307 Slog.w(TAG, "Activity stop timeout for " + r); 308 synchronized (mService) { 309 if (r.isInHistory()) { 310 activityStoppedLocked(r, null, null, null); 311 } 312 } 313 } break; 314 case DESTROY_ACTIVITIES_MSG: { 315 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 316 synchronized (mService) { 317 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 318 } 319 } break; 320 case TRANSLUCENT_TIMEOUT_MSG: { 321 synchronized (mService) { 322 notifyActivityDrawnLocked(null); 323 } 324 } break; 325 } 326 } 327 } 328 329 int numActivities() { 330 int count = 0; 331 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 332 count += mTaskHistory.get(taskNdx).mActivities.size(); 333 } 334 return count; 335 } 336 337 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 338 mActivityContainer = activityContainer; 339 mStackSupervisor = activityContainer.getOuter(); 340 mService = mStackSupervisor.mService; 341 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 342 mWindowManager = mService.mWindowManager; 343 mStackId = activityContainer.mStackId; 344 mCurrentUser = mService.mCurrentUserId; 345 } 346 347 /** 348 * Checks whether the userid is a profile of the current user. 349 */ 350 private boolean isCurrentProfileLocked(int userId) { 351 if (userId == mCurrentUser) return true; 352 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 353 if (mService.mCurrentProfileIds[i] == userId) return true; 354 } 355 return false; 356 } 357 358 boolean okToShowLocked(ActivityRecord r) { 359 return isCurrentProfileLocked(r.userId) 360 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 361 } 362 363 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 364 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 365 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 366 if (r != null) { 367 return r; 368 } 369 } 370 return null; 371 } 372 373 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 374 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 375 final TaskRecord task = mTaskHistory.get(taskNdx); 376 final ArrayList<ActivityRecord> activities = task.mActivities; 377 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 378 ActivityRecord r = activities.get(activityNdx); 379 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 380 return r; 381 } 382 } 383 } 384 return null; 385 } 386 387 /** 388 * This is a simplified version of topRunningActivityLocked that provides a number of 389 * optional skip-over modes. It is intended for use with the ActivityController hook only. 390 * 391 * @param token If non-null, any history records matching this token will be skipped. 392 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 393 * 394 * @return Returns the HistoryRecord of the next activity on the stack. 395 */ 396 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 397 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 398 TaskRecord task = mTaskHistory.get(taskNdx); 399 if (task.taskId == taskId) { 400 continue; 401 } 402 ArrayList<ActivityRecord> activities = task.mActivities; 403 for (int i = activities.size() - 1; i >= 0; --i) { 404 final ActivityRecord r = activities.get(i); 405 // Note: the taskId check depends on real taskId fields being non-zero 406 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 407 return r; 408 } 409 } 410 } 411 return null; 412 } 413 414 final ActivityRecord topActivity() { 415 // Iterate to find the first non-empty task stack. Note that this code can 416 // be simplified once we stop storing tasks with empty mActivities lists. 417 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 418 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 419 final int topActivityNdx = activities.size() - 1; 420 if (topActivityNdx >= 0) { 421 return activities.get(topActivityNdx); 422 } 423 } 424 return null; 425 } 426 427 final TaskRecord topTask() { 428 final int size = mTaskHistory.size(); 429 if (size > 0) { 430 return mTaskHistory.get(size - 1); 431 } 432 return null; 433 } 434 435 TaskRecord taskForIdLocked(int id) { 436 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 437 final TaskRecord task = mTaskHistory.get(taskNdx); 438 if (task.taskId == id) { 439 return task; 440 } 441 } 442 return null; 443 } 444 445 ActivityRecord isInStackLocked(IBinder token) { 446 final ActivityRecord r = ActivityRecord.forToken(token); 447 if (r != null) { 448 final TaskRecord task = r.task; 449 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 450 if (task.stack != this) Slog.w(TAG, 451 "Illegal state! task does not point to stack it is in."); 452 return r; 453 } 454 } 455 return null; 456 } 457 458 final boolean updateLRUListLocked(ActivityRecord r) { 459 final boolean hadit = mLRUActivities.remove(r); 460 mLRUActivities.add(r); 461 return hadit; 462 } 463 464 final boolean isHomeStack() { 465 return mStackId == HOME_STACK_ID; 466 } 467 468 final boolean isOnHomeDisplay() { 469 return isAttached() && 470 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 471 } 472 473 final void moveToFront() { 474 if (isAttached()) { 475 if (isOnHomeDisplay()) { 476 mStackSupervisor.moveHomeStack(isHomeStack()); 477 } 478 mStacks.remove(this); 479 mStacks.add(this); 480 } 481 } 482 483 final boolean isAttached() { 484 return mStacks != null; 485 } 486 487 /** 488 * Returns the top activity in any existing task matching the given 489 * Intent. Returns null if no such task is found. 490 */ 491 ActivityRecord findTaskLocked(ActivityRecord target) { 492 Intent intent = target.intent; 493 ActivityInfo info = target.info; 494 ComponentName cls = intent.getComponent(); 495 if (info.targetActivity != null) { 496 cls = new ComponentName(info.packageName, info.targetActivity); 497 } 498 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 499 boolean isDocument = intent != null & intent.isDocument(); 500 // If documentData is non-null then it must match the existing task data. 501 Uri documentData = isDocument ? intent.getData() : null; 502 503 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 504 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 505 final TaskRecord task = mTaskHistory.get(taskNdx); 506 if (task.voiceSession != null) { 507 // We never match voice sessions; those always run independently. 508 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 509 continue; 510 } 511 if (task.userId != userId) { 512 // Looking for a different task. 513 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 514 continue; 515 } 516 final ActivityRecord r = task.getTopActivity(); 517 if (r == null || r.finishing || r.userId != userId || 518 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 519 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 520 continue; 521 } 522 523 final Intent taskIntent = task.intent; 524 final Intent affinityIntent = task.affinityIntent; 525 final boolean taskIsDocument; 526 final Uri taskDocumentData; 527 if (taskIntent != null && taskIntent.isDocument()) { 528 taskIsDocument = true; 529 taskDocumentData = taskIntent.getData(); 530 } else if (affinityIntent != null && affinityIntent.isDocument()) { 531 taskIsDocument = true; 532 taskDocumentData = affinityIntent.getData(); 533 } else { 534 taskIsDocument = false; 535 taskDocumentData = null; 536 } 537 538 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 539 + taskIntent.getComponent().flattenToShortString() 540 + "/aff=" + r.task.affinity + " to new cls=" 541 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 542 if (!isDocument && !taskIsDocument && task.affinity != null) { 543 if (task.affinity.equals(target.taskAffinity)) { 544 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 545 return r; 546 } 547 } else if (taskIntent != null && taskIntent.getComponent().equals(cls) && 548 Objects.equals(documentData, taskDocumentData)) { 549 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 550 //dump(); 551 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 552 + r.intent); 553 return r; 554 } else if (affinityIntent != null && affinityIntent.getComponent().equals(cls) && 555 Objects.equals(documentData, taskDocumentData)) { 556 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 557 //dump(); 558 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 559 + r.intent); 560 return r; 561 } else if (DEBUG_TASKS) { 562 Slog.d(TAG, "Not a match: " + task); 563 } 564 } 565 566 return null; 567 } 568 569 /** 570 * Returns the first activity (starting from the top of the stack) that 571 * is the same as the given activity. Returns null if no such activity 572 * is found. 573 */ 574 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 575 ComponentName cls = intent.getComponent(); 576 if (info.targetActivity != null) { 577 cls = new ComponentName(info.packageName, info.targetActivity); 578 } 579 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 580 581 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 582 TaskRecord task = mTaskHistory.get(taskNdx); 583 if (!isCurrentProfileLocked(task.userId)) { 584 return null; 585 } 586 final ArrayList<ActivityRecord> activities = task.mActivities; 587 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 588 ActivityRecord r = activities.get(activityNdx); 589 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 590 //Slog.i(TAG, "Found matching class!"); 591 //dump(); 592 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 593 return r; 594 } 595 } 596 } 597 598 return null; 599 } 600 601 /* 602 * Move the activities around in the stack to bring a user to the foreground. 603 */ 604 final void switchUserLocked(int userId) { 605 if (mCurrentUser == userId) { 606 return; 607 } 608 mCurrentUser = userId; 609 610 // Move userId's tasks to the top. 611 int index = mTaskHistory.size(); 612 for (int i = 0; i < index; ) { 613 TaskRecord task = mTaskHistory.get(i); 614 if (isCurrentProfileLocked(task.userId)) { 615 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 616 " moving " + task + " to top"); 617 mTaskHistory.remove(i); 618 mTaskHistory.add(task); 619 --index; 620 // Use same value for i. 621 } else { 622 ++i; 623 } 624 } 625 if (VALIDATE_TOKENS) { 626 validateAppTokensLocked(); 627 } 628 } 629 630 void minimalResumeActivityLocked(ActivityRecord r) { 631 r.state = ActivityState.RESUMED; 632 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 633 + " (starting new instance)"); 634 r.stopped = false; 635 mResumedActivity = r; 636 r.task.touchActiveTime(); 637 mService.addRecentTaskLocked(r.task); 638 completeResumeLocked(r); 639 mStackSupervisor.checkReadyForSleepLocked(); 640 setLaunchTime(r); 641 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 642 } 643 644 private void startLaunchTraces() { 645 if (mFullyDrawnStartTime != 0) { 646 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 647 } 648 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 649 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 650 } 651 652 private void stopFullyDrawnTraceIfNeeded() { 653 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 654 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 655 mFullyDrawnStartTime = 0; 656 } 657 } 658 659 void setLaunchTime(ActivityRecord r) { 660 if (r.displayStartTime == 0) { 661 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 662 if (mLaunchStartTime == 0) { 663 startLaunchTraces(); 664 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 665 } 666 } else if (mLaunchStartTime == 0) { 667 startLaunchTraces(); 668 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 669 } 670 } 671 672 void clearLaunchTime(ActivityRecord r) { 673 // Make sure that there is no activity waiting for this to launch. 674 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 675 r.displayStartTime = r.fullyDrawnStartTime = 0; 676 } else { 677 mStackSupervisor.removeTimeoutsForActivityLocked(r); 678 mStackSupervisor.scheduleIdleTimeoutLocked(r); 679 } 680 } 681 682 void awakeFromSleepingLocked() { 683 // Ensure activities are no longer sleeping. 684 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 685 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 686 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 687 activities.get(activityNdx).setSleeping(false); 688 } 689 } 690 } 691 692 /** 693 * @return true if something must be done before going to sleep. 694 */ 695 boolean checkReadyForSleepLocked() { 696 if (mResumedActivity != null) { 697 // Still have something resumed; can't sleep until it is paused. 698 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 699 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 700 startPausingLocked(false, true); 701 return true; 702 } 703 if (mPausingActivity != null) { 704 // Still waiting for something to pause; can't sleep yet. 705 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 706 return true; 707 } 708 709 return false; 710 } 711 712 void goToSleep() { 713 ensureActivitiesVisibleLocked(null, 0); 714 715 // Make sure any stopped but visible activities are now sleeping. 716 // This ensures that the activity's onStop() is called. 717 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 718 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 719 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 720 final ActivityRecord r = activities.get(activityNdx); 721 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 722 r.setSleeping(true); 723 } 724 } 725 } 726 } 727 728 public final Bitmap screenshotActivities(ActivityRecord who) { 729 if (who.noDisplay) { 730 return null; 731 } 732 733 TaskRecord tr = who.task; 734 if (mService.getMostRecentTask() != tr && tr.intent != null && 735 (tr.intent.getFlags() & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) != 0) { 736 // If this task is being excluded from recents, we don't want to take 737 // the expense of capturing a thumbnail, since we will never show it. 738 return null; 739 } 740 741 Resources res = mService.mContext.getResources(); 742 int w = mThumbnailWidth; 743 int h = mThumbnailHeight; 744 if (w < 0) { 745 mThumbnailWidth = w = 746 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_width); 747 mThumbnailHeight = h = 748 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_height); 749 } 750 751 if (w > 0) { 752 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 753 || mLastScreenshotActivity.state == ActivityState.RESUMED 754 || mLastScreenshotBitmap.getWidth() != w 755 || mLastScreenshotBitmap.getHeight() != h) { 756 mLastScreenshotActivity = who; 757 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 758 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 759 } 760 if (mLastScreenshotBitmap != null) { 761 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 762 } 763 } 764 return null; 765 } 766 767 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 768 if (mPausingActivity != null) { 769 Slog.e(TAG, "Trying to pause when pause is already pending for " 770 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 771 } 772 ActivityRecord prev = mResumedActivity; 773 if (prev == null) { 774 Slog.e(TAG, "Trying to pause when nothing is resumed", 775 new RuntimeException("here").fillInStackTrace()); 776 mStackSupervisor.resumeTopActivitiesLocked(); 777 return; 778 } 779 780 if (mActivityContainer.mParentActivity == null) { 781 // Top level stack, not a child. Look for child stacks. 782 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 783 } 784 785 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 786 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 787 mResumedActivity = null; 788 mPausingActivity = prev; 789 mLastPausedActivity = prev; 790 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 791 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 792 prev.state = ActivityState.PAUSING; 793 prev.task.touchActiveTime(); 794 clearLaunchTime(prev); 795 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 796 if (next == null || next.noDisplay || next.task != prev.task) { 797 prev.updateThumbnail(screenshotActivities(prev), null); 798 } 799 stopFullyDrawnTraceIfNeeded(); 800 801 mService.updateCpuStats(); 802 803 if (prev.app != null && prev.app.thread != null) { 804 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 805 try { 806 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 807 prev.userId, System.identityHashCode(prev), 808 prev.shortComponentName); 809 mService.updateUsageStats(prev, false); 810 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 811 userLeaving, prev.configChangeFlags); 812 } catch (Exception e) { 813 // Ignore exception, if process died other code will cleanup. 814 Slog.w(TAG, "Exception thrown during pause", e); 815 mPausingActivity = null; 816 mLastPausedActivity = null; 817 mLastNoHistoryActivity = null; 818 } 819 } else { 820 mPausingActivity = null; 821 mLastPausedActivity = null; 822 mLastNoHistoryActivity = null; 823 } 824 825 // If we are not going to sleep, we want to ensure the device is 826 // awake until the next activity is started. 827 if (!mService.isSleepingOrShuttingDown()) { 828 mStackSupervisor.acquireLaunchWakelock(); 829 } 830 831 if (mPausingActivity != null) { 832 // Have the window manager pause its key dispatching until the new 833 // activity has started. If we're pausing the activity just because 834 // the screen is being turned off and the UI is sleeping, don't interrupt 835 // key dispatch; the same activity will pick it up again on wakeup. 836 if (!uiSleeping) { 837 prev.pauseKeyDispatchingLocked(); 838 } else { 839 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 840 } 841 842 // Schedule a pause timeout in case the app doesn't respond. 843 // We don't give it much time because this directly impacts the 844 // responsiveness seen by the user. 845 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 846 msg.obj = prev; 847 prev.pauseTime = SystemClock.uptimeMillis(); 848 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 849 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 850 } else { 851 // This activity failed to schedule the 852 // pause, so just treat it as being paused now. 853 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 854 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 855 } 856 } 857 858 final void activityPausedLocked(IBinder token, boolean timeout, 859 PersistableBundle persistentState) { 860 if (DEBUG_PAUSE) Slog.v( 861 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 862 863 final ActivityRecord r = isInStackLocked(token); 864 if (r != null) { 865 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 866 if (persistentState != null) { 867 r.persistentState = persistentState; 868 mService.notifyTaskPersisterLocked(r.task, false); 869 } 870 if (mPausingActivity == r) { 871 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 872 + (timeout ? " (due to timeout)" : " (pause complete)")); 873 r.state = ActivityState.PAUSED; 874 completePauseLocked(); 875 } else { 876 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 877 r.userId, System.identityHashCode(r), r.shortComponentName, 878 mPausingActivity != null 879 ? mPausingActivity.shortComponentName : "(none)"); 880 } 881 } 882 } 883 884 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, 885 PersistableBundle persistentState, CharSequence description) { 886 if (r.state != ActivityState.STOPPING) { 887 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 888 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 889 return; 890 } 891 if (persistentState != null) { 892 r.persistentState = persistentState; 893 mService.notifyTaskPersisterLocked(r.task, false); 894 } 895 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 896 if (icicle != null) { 897 // If icicle is null, this is happening due to a timeout, so we 898 // haven't really saved the state. 899 r.icicle = icicle; 900 r.haveState = true; 901 r.launchCount = 0; 902 r.updateThumbnail(null, description); 903 } 904 if (!r.stopped) { 905 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 906 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 907 r.stopped = true; 908 r.state = ActivityState.STOPPED; 909 if (r.finishing) { 910 r.clearOptionsLocked(); 911 } else { 912 if (r.configDestroy) { 913 destroyActivityLocked(r, true, false, "stop-config"); 914 mStackSupervisor.resumeTopActivitiesLocked(); 915 } else { 916 mStackSupervisor.updatePreviousProcessLocked(r); 917 } 918 } 919 } 920 } 921 922 private void completePauseLocked() { 923 ActivityRecord prev = mPausingActivity; 924 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 925 926 if (prev != null) { 927 if (prev.finishing) { 928 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 929 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 930 } else if (prev.app != null) { 931 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 932 if (prev.waitingVisible) { 933 prev.waitingVisible = false; 934 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 935 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 936 TAG, "Complete pause, no longer waiting: " + prev); 937 } 938 if (prev.configDestroy) { 939 // The previous is being paused because the configuration 940 // is changing, which means it is actually stopping... 941 // To juggle the fact that we are also starting a new 942 // instance right now, we need to first completely stop 943 // the current instance before starting the new one. 944 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 945 destroyActivityLocked(prev, true, false, "pause-config"); 946 } else { 947 mStackSupervisor.mStoppingActivities.add(prev); 948 if (mStackSupervisor.mStoppingActivities.size() > 3 || 949 prev.frontOfTask && mTaskHistory.size() <= 1) { 950 // If we already have a few activities waiting to stop, 951 // then give up on things going idle and start clearing 952 // them out. Or if r is the last of activity of the last task the stack 953 // will be empty and must be cleared immediately. 954 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 955 mStackSupervisor.scheduleIdleLocked(); 956 } else { 957 mStackSupervisor.checkReadyForSleepLocked(); 958 } 959 } 960 } else { 961 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 962 prev = null; 963 } 964 mPausingActivity = null; 965 } 966 967 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 968 if (!mService.isSleepingOrShuttingDown()) { 969 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 970 } else { 971 mStackSupervisor.checkReadyForSleepLocked(); 972 ActivityRecord top = topStack.topRunningActivityLocked(null); 973 if (top == null || (prev != null && top != prev)) { 974 // If there are no more activities available to run, 975 // do resume anyway to start something. Also if the top 976 // activity on the stack is not the just paused activity, 977 // we need to go ahead and resume it to ensure we complete 978 // an in-flight app switch. 979 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 980 } 981 } 982 983 if (prev != null) { 984 prev.resumeKeyDispatchingLocked(); 985 986 if (prev.app != null && prev.cpuTimeAtResume > 0 987 && mService.mBatteryStatsService.isOnBattery()) { 988 long diff; 989 synchronized (mService.mProcessCpuThread) { 990 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 991 - prev.cpuTimeAtResume; 992 } 993 if (diff > 0) { 994 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 995 synchronized (bsi) { 996 BatteryStatsImpl.Uid.Proc ps = 997 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 998 prev.info.packageName); 999 if (ps != null) { 1000 ps.addForegroundTimeLocked(diff); 1001 } 1002 } 1003 } 1004 } 1005 prev.cpuTimeAtResume = 0; // reset it 1006 } 1007 } 1008 1009 /** 1010 * Once we know that we have asked an application to put an activity in 1011 * the resumed state (either by launching it or explicitly telling it), 1012 * this function updates the rest of our state to match that fact. 1013 */ 1014 private void completeResumeLocked(ActivityRecord next) { 1015 next.idle = false; 1016 next.results = null; 1017 next.newIntents = null; 1018 if (next.nowVisible) { 1019 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1020 mStackSupervisor.dismissKeyguard(); 1021 } 1022 1023 // schedule an idle timeout in case the app doesn't do it for us. 1024 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1025 1026 mStackSupervisor.reportResumedActivityLocked(next); 1027 1028 next.resumeKeyDispatchingLocked(); 1029 mNoAnimActivities.clear(); 1030 1031 // Mark the point when the activity is resuming 1032 // TODO: To be more accurate, the mark should be before the onCreate, 1033 // not after the onResume. But for subsequent starts, onResume is fine. 1034 if (next.app != null) { 1035 synchronized (mService.mProcessCpuThread) { 1036 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1037 } 1038 } else { 1039 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1040 } 1041 } 1042 1043 /** 1044 * Determine if home should be visible below the passed record. 1045 * @param record activity we are querying for. 1046 * @return true if home is visible below the passed activity, false otherwise. 1047 */ 1048 boolean isActivityOverHome(ActivityRecord record) { 1049 // Start at record and go down, look for either home or a visible fullscreen activity. 1050 final TaskRecord recordTask = record.task; 1051 for (int taskNdx = mTaskHistory.indexOf(recordTask); taskNdx >= 0; --taskNdx) { 1052 TaskRecord task = mTaskHistory.get(taskNdx); 1053 final ArrayList<ActivityRecord> activities = task.mActivities; 1054 final int startNdx = 1055 task == recordTask ? activities.indexOf(record) : activities.size() - 1; 1056 for (int activityNdx = startNdx; activityNdx >= 0; --activityNdx) { 1057 final ActivityRecord r = activities.get(activityNdx); 1058 if (r.isHomeActivity()) { 1059 return true; 1060 } 1061 if (!r.finishing && r.fullscreen) { 1062 // Passed activity is over a fullscreen activity. 1063 return false; 1064 } 1065 } 1066 if (task.mOnTopOfHome) { 1067 // Got to the bottom of a task on top of home without finding a visible fullscreen 1068 // activity. Home is visible. 1069 return true; 1070 } 1071 } 1072 // Got to the bottom of this stack and still don't know. If this is over the home stack 1073 // then record is over home. May not work if we ever get more than two layers. 1074 return mStackSupervisor.isFrontStack(this); 1075 } 1076 1077 private void setVisibile(ActivityRecord r, boolean visible) { 1078 r.visible = visible; 1079 mWindowManager.setAppVisibility(r.appToken, visible); 1080 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1081 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1082 ActivityContainer container = containers.get(containerNdx); 1083 container.setVisible(visible); 1084 } 1085 } 1086 1087 // Checks if any of the stacks above this one has a fullscreen activity behind it. 1088 // If so, this stack is hidden, otherwise it is visible. 1089 private boolean isStackVisible() { 1090 if (!isAttached()) { 1091 return false; 1092 } 1093 1094 if (mStackSupervisor.isFrontStack(this)) { 1095 return true; 1096 } 1097 1098 /** 1099 * Start at the task above this one and go up, looking for a visible 1100 * fullscreen activity, or a translucent activity that requested the 1101 * wallpaper to be shown behind it. 1102 */ 1103 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) { 1104 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks(); 1105 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) { 1106 final ArrayList<ActivityRecord> activities = tasks.get(taskNdx).mActivities; 1107 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) { 1108 final ActivityRecord r = activities.get(activityNdx); 1109 1110 // Conditions for an activity to obscure the stack we're 1111 // examining: 1112 // 1. Not Finishing AND Visible AND: 1113 // 2. Either: 1114 // - Full Screen Activity OR 1115 // - On top of Home and our stack is NOT home 1116 if (!r.finishing && r.visible && (r.fullscreen || 1117 (!isHomeStack() && r.frontOfTask && tasks.get(taskNdx).mOnTopOfHome))) { 1118 return false; 1119 } 1120 } 1121 } 1122 } 1123 1124 return true; 1125 } 1126 1127 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1128 ActivityRecord r = topRunningActivityLocked(null); 1129 if (r != null) { 1130 ensureActivitiesVisibleLocked(r, starting, null, configChanges); 1131 } 1132 } 1133 1134 /** 1135 * Make sure that all activities that need to be visible (that is, they 1136 * currently can be seen by the user) actually are. 1137 */ 1138 final void ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1139 String onlyThisProcess, int configChanges) { 1140 if (DEBUG_VISBILITY) Slog.v( 1141 TAG, "ensureActivitiesVisible behind " + top 1142 + " configChanges=0x" + Integer.toHexString(configChanges)); 1143 1144 if (mTranslucentActivityWaiting != top) { 1145 mUndrawnActivitiesBelowTopTranslucent.clear(); 1146 if (mTranslucentActivityWaiting != null) { 1147 // Call the callback with a timeout indication. 1148 notifyActivityDrawnLocked(null); 1149 mTranslucentActivityWaiting = null; 1150 } 1151 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1152 } 1153 1154 // If the top activity is not fullscreen, then we need to 1155 // make sure any activities under it are now visible. 1156 boolean aboveTop = true; 1157 boolean behindFullscreen = !isStackVisible(); 1158 1159 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1160 final TaskRecord task = mTaskHistory.get(taskNdx); 1161 final ArrayList<ActivityRecord> activities = task.mActivities; 1162 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1163 final ActivityRecord r = activities.get(activityNdx); 1164 if (r.finishing) { 1165 continue; 1166 } 1167 if (aboveTop && r != top) { 1168 continue; 1169 } 1170 aboveTop = false; 1171 if (!behindFullscreen) { 1172 if (DEBUG_VISBILITY) Slog.v( 1173 TAG, "Make visible? " + r + " finishing=" + r.finishing 1174 + " state=" + r.state); 1175 1176 final boolean doThisProcess = onlyThisProcess == null 1177 || onlyThisProcess.equals(r.processName); 1178 1179 // First: if this is not the current activity being started, make 1180 // sure it matches the current configuration. 1181 if (r != starting && doThisProcess) { 1182 ensureActivityConfigurationLocked(r, 0); 1183 } 1184 1185 if (r.app == null || r.app.thread == null) { 1186 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1187 // This activity needs to be visible, but isn't even 1188 // running... get it started, but don't resume it 1189 // at this point. 1190 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1191 if (r != starting) { 1192 r.startFreezingScreenLocked(r.app, configChanges); 1193 } 1194 if (!r.visible) { 1195 if (DEBUG_VISBILITY) Slog.v( 1196 TAG, "Starting and making visible: " + r); 1197 setVisibile(r, true); 1198 } 1199 if (r != starting) { 1200 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1201 } 1202 } 1203 1204 } else if (r.visible) { 1205 // If this activity is already visible, then there is nothing 1206 // else to do here. 1207 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1208 r.stopFreezingScreenLocked(false); 1209 1210 } else if (onlyThisProcess == null) { 1211 // This activity is not currently visible, but is running. 1212 // Tell it to become visible. 1213 r.visible = true; 1214 if (r.state != ActivityState.RESUMED && r != starting) { 1215 // If this activity is paused, tell it 1216 // to now show its window. 1217 if (DEBUG_VISBILITY) Slog.v( 1218 TAG, "Making visible and scheduling visibility: " + r); 1219 try { 1220 if (mTranslucentActivityWaiting != null) { 1221 r.updateOptionsLocked(mReturningActivityOptions); 1222 mUndrawnActivitiesBelowTopTranslucent.add(r); 1223 } 1224 setVisibile(r, true); 1225 r.sleeping = false; 1226 r.app.pendingUiClean = true; 1227 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1228 r.stopFreezingScreenLocked(false); 1229 } catch (Exception e) { 1230 // Just skip on any failure; we'll make it 1231 // visible when it next restarts. 1232 Slog.w(TAG, "Exception thrown making visibile: " 1233 + r.intent.getComponent(), e); 1234 } 1235 } 1236 } 1237 1238 // Aggregate current change flags. 1239 configChanges |= r.configChangeFlags; 1240 1241 if (r.fullscreen) { 1242 // At this point, nothing else needs to be shown 1243 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1244 behindFullscreen = true; 1245 } else if (!isHomeStack() && r.frontOfTask && task.mOnTopOfHome) { 1246 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1247 behindFullscreen = true; 1248 } 1249 } else { 1250 if (DEBUG_VISBILITY) Slog.v( 1251 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1252 + " state=" + r.state 1253 + " behindFullscreen=" + behindFullscreen); 1254 // Now for any activities that aren't visible to the user, make 1255 // sure they no longer are keeping the screen frozen. 1256 if (r.visible) { 1257 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1258 try { 1259 setVisibile(r, false); 1260 switch (r.state) { 1261 case STOPPING: 1262 case STOPPED: 1263 if (r.app != null && r.app.thread != null) { 1264 if (DEBUG_VISBILITY) Slog.v( 1265 TAG, "Scheduling invisibility: " + r); 1266 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1267 } 1268 break; 1269 1270 case INITIALIZING: 1271 case RESUMED: 1272 case PAUSING: 1273 case PAUSED: 1274 // This case created for transitioning activities from 1275 // translucent to opaque {@link Activity#convertToOpaque}. 1276 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1277 mStackSupervisor.mStoppingActivities.add(r); 1278 } 1279 mStackSupervisor.scheduleIdleLocked(); 1280 break; 1281 1282 default: 1283 break; 1284 } 1285 } catch (Exception e) { 1286 // Just skip on any failure; we'll make it 1287 // visible when it next restarts. 1288 Slog.w(TAG, "Exception thrown making hidden: " 1289 + r.intent.getComponent(), e); 1290 } 1291 } else { 1292 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1293 } 1294 } 1295 } 1296 } 1297 } 1298 1299 void convertToTranslucent(ActivityRecord r, ActivityOptions options) { 1300 mTranslucentActivityWaiting = r; 1301 mUndrawnActivitiesBelowTopTranslucent.clear(); 1302 mReturningActivityOptions = options; 1303 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1304 } 1305 1306 /** 1307 * Called as activities below the top translucent activity are redrawn. When the last one is 1308 * redrawn notify the top activity by calling 1309 * {@link Activity#onTranslucentConversionComplete}. 1310 * 1311 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1312 * occurred and the activity will be notified immediately. 1313 */ 1314 void notifyActivityDrawnLocked(ActivityRecord r) { 1315 mActivityContainer.setDrawn(); 1316 if ((r == null) 1317 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1318 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1319 // The last undrawn activity below the top has just been drawn. If there is an 1320 // opaque activity at the top, notify it that it can become translucent safely now. 1321 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1322 mTranslucentActivityWaiting = null; 1323 mUndrawnActivitiesBelowTopTranslucent.clear(); 1324 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1325 1326 if (waitingActivity != null) { 1327 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1328 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1329 try { 1330 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1331 waitingActivity.appToken, r != null); 1332 } catch (RemoteException e) { 1333 } 1334 } 1335 } 1336 } 1337 } 1338 1339 /** If any activities below the top running one are in the INITIALIZING state and they have a 1340 * starting window displayed then remove that starting window. It is possible that the activity 1341 * in this state will never resumed in which case that starting window will be orphaned. */ 1342 void cancelInitializingActivities() { 1343 final ActivityRecord topActivity = topRunningActivityLocked(null); 1344 boolean aboveTop = true; 1345 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1346 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1347 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1348 final ActivityRecord r = activities.get(activityNdx); 1349 if (aboveTop) { 1350 if (r == topActivity) { 1351 aboveTop = false; 1352 } 1353 continue; 1354 } 1355 1356 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1357 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1358 r.mStartingWindowShown = false; 1359 mWindowManager.removeAppStartingWindow(r.appToken); 1360 } 1361 } 1362 } 1363 } 1364 1365 /** 1366 * Ensure that the top activity in the stack is resumed. 1367 * 1368 * @param prev The previously resumed activity, for when in the process 1369 * of pausing; can be null to call from elsewhere. 1370 * 1371 * @return Returns true if something is being resumed, or false if 1372 * nothing happened. 1373 */ 1374 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1375 return resumeTopActivityLocked(prev, null); 1376 } 1377 1378 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1379 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1380 1381 ActivityRecord parent = mActivityContainer.mParentActivity; 1382 if ((parent != null && parent.state != ActivityState.RESUMED) || 1383 !mActivityContainer.isAttached()) { 1384 // Do not resume this stack if its parent is not resumed. 1385 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1386 return false; 1387 } 1388 1389 cancelInitializingActivities(); 1390 1391 // Find the first activity that is not finishing. 1392 ActivityRecord next = topRunningActivityLocked(null); 1393 1394 // Remember how we'll process this pause/resume situation, and ensure 1395 // that the state is reset however we wind up proceeding. 1396 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1397 mStackSupervisor.mUserLeaving = false; 1398 1399 if (next == null) { 1400 // There are no more activities! Let's just start up the 1401 // Launcher... 1402 ActivityOptions.abort(options); 1403 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1404 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1405 // Only resume home if on home display 1406 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1407 } 1408 1409 next.delayedResume = false; 1410 1411 // If the top activity is the resumed one, nothing to do. 1412 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1413 mStackSupervisor.allResumedActivitiesComplete()) { 1414 // Make sure we have executed any pending transitions, since there 1415 // should be nothing left to do at this point. 1416 mWindowManager.executeAppTransition(); 1417 mNoAnimActivities.clear(); 1418 ActivityOptions.abort(options); 1419 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1420 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1421 return false; 1422 } 1423 1424 final TaskRecord nextTask = next.task; 1425 final TaskRecord prevTask = prev != null ? prev.task : null; 1426 if (prevTask != null && prevTask.stack == this && 1427 prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1428 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1429 if (prevTask == nextTask) { 1430 prevTask.setFrontOfTask(); 1431 } else if (prevTask != topTask()) { 1432 // This task is going away but it was supposed to return to the home task. 1433 // Now the task above it has to return to the home task instead. 1434 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1435 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1436 } else { 1437 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1438 "resumeTopActivityLocked: Launching home next"); 1439 // Only resume home if on home display 1440 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1441 } 1442 } 1443 1444 // If we are sleeping, and there is no resumed activity, and the top 1445 // activity is paused, well that is the state we want. 1446 if (mService.isSleepingOrShuttingDown() 1447 && mLastPausedActivity == next 1448 && mStackSupervisor.allPausedActivitiesComplete()) { 1449 // Make sure we have executed any pending transitions, since there 1450 // should be nothing left to do at this point. 1451 mWindowManager.executeAppTransition(); 1452 mNoAnimActivities.clear(); 1453 ActivityOptions.abort(options); 1454 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1455 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1456 return false; 1457 } 1458 1459 // Make sure that the user who owns this activity is started. If not, 1460 // we will just leave it as is because someone should be bringing 1461 // another user's activities to the top of the stack. 1462 if (mService.mStartedUsers.get(next.userId) == null) { 1463 Slog.w(TAG, "Skipping resume of top activity " + next 1464 + ": user " + next.userId + " is stopped"); 1465 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1466 return false; 1467 } 1468 1469 // The activity may be waiting for stop, but that is no longer 1470 // appropriate for it. 1471 mStackSupervisor.mStoppingActivities.remove(next); 1472 mStackSupervisor.mGoingToSleepActivities.remove(next); 1473 next.sleeping = false; 1474 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1475 1476 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1477 1478 // If we are currently pausing an activity, then don't do anything 1479 // until that is done. 1480 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1481 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1482 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1483 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1484 return false; 1485 } 1486 1487 // Okay we are now going to start a switch, to 'next'. We may first 1488 // have to pause the current activity, but this is an important point 1489 // where we have decided to go to 'next' so keep track of that. 1490 // XXX "App Redirected" dialog is getting too many false positives 1491 // at this point, so turn off for now. 1492 if (false) { 1493 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1494 long now = SystemClock.uptimeMillis(); 1495 final boolean inTime = mLastStartedActivity.startTime != 0 1496 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1497 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1498 final int nextUid = next.info.applicationInfo.uid; 1499 if (inTime && lastUid != nextUid 1500 && lastUid != next.launchedFromUid 1501 && mService.checkPermission( 1502 android.Manifest.permission.STOP_APP_SWITCHES, 1503 -1, next.launchedFromUid) 1504 != PackageManager.PERMISSION_GRANTED) { 1505 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1506 } else { 1507 next.startTime = now; 1508 mLastStartedActivity = next; 1509 } 1510 } else { 1511 next.startTime = SystemClock.uptimeMillis(); 1512 mLastStartedActivity = next; 1513 } 1514 } 1515 1516 // We need to start pausing the current activity so the top one 1517 // can be resumed... 1518 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1519 if (mResumedActivity != null) { 1520 pausing = true; 1521 startPausingLocked(userLeaving, false); 1522 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1523 } 1524 if (pausing) { 1525 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1526 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1527 // At this point we want to put the upcoming activity's process 1528 // at the top of the LRU list, since we know we will be needing it 1529 // very soon and it would be a waste to let it get killed if it 1530 // happens to be sitting towards the end. 1531 if (next.app != null && next.app.thread != null) { 1532 // No reason to do full oom adj update here; we'll let that 1533 // happen whenever it needs to later. 1534 mService.updateLruProcessLocked(next.app, true, null); 1535 } 1536 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1537 return true; 1538 } 1539 1540 // If the most recent activity was noHistory but was only stopped rather 1541 // than stopped+finished because the device went to sleep, we need to make 1542 // sure to finish it as we're making a new activity topmost. 1543 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1544 !mLastNoHistoryActivity.finishing) { 1545 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1546 " on new resume"); 1547 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1548 null, "no-history", false); 1549 mLastNoHistoryActivity = null; 1550 } 1551 1552 if (prev != null && prev != next) { 1553 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1554 prev.waitingVisible = true; 1555 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1556 if (DEBUG_SWITCH) Slog.v( 1557 TAG, "Resuming top, waiting visible to hide: " + prev); 1558 } else { 1559 // The next activity is already visible, so hide the previous 1560 // activity's windows right now so we can show the new one ASAP. 1561 // We only do this if the previous is finishing, which should mean 1562 // it is on top of the one being resumed so hiding it quickly 1563 // is good. Otherwise, we want to do the normal route of allowing 1564 // the resumed activity to be shown so we can decide if the 1565 // previous should actually be hidden depending on whether the 1566 // new one is found to be full-screen or not. 1567 if (prev.finishing) { 1568 mWindowManager.setAppVisibility(prev.appToken, false); 1569 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1570 + prev + ", waitingVisible=" 1571 + (prev != null ? prev.waitingVisible : null) 1572 + ", nowVisible=" + next.nowVisible); 1573 } else { 1574 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1575 + prev + ", waitingVisible=" 1576 + (prev != null ? prev.waitingVisible : null) 1577 + ", nowVisible=" + next.nowVisible); 1578 } 1579 } 1580 } 1581 1582 // Launching this app's activity, make sure the app is no longer 1583 // considered stopped. 1584 try { 1585 AppGlobals.getPackageManager().setPackageStoppedState( 1586 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1587 } catch (RemoteException e1) { 1588 } catch (IllegalArgumentException e) { 1589 Slog.w(TAG, "Failed trying to unstop package " 1590 + next.packageName + ": " + e); 1591 } 1592 1593 // We are starting up the next activity, so tell the window manager 1594 // that the previous one will be hidden soon. This way it can know 1595 // to ignore it when computing the desired screen orientation. 1596 boolean anim = true; 1597 if (prev != null) { 1598 if (prev.finishing) { 1599 if (DEBUG_TRANSITION) Slog.v(TAG, 1600 "Prepare close transition: prev=" + prev); 1601 if (mNoAnimActivities.contains(prev)) { 1602 anim = false; 1603 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1604 } else { 1605 mWindowManager.prepareAppTransition(prev.task == next.task 1606 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1607 : AppTransition.TRANSIT_TASK_CLOSE, false); 1608 } 1609 mWindowManager.setAppWillBeHidden(prev.appToken); 1610 mWindowManager.setAppVisibility(prev.appToken, false); 1611 } else { 1612 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1613 if (mNoAnimActivities.contains(next)) { 1614 anim = false; 1615 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1616 } else { 1617 mWindowManager.prepareAppTransition(prev.task == next.task 1618 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1619 : AppTransition.TRANSIT_TASK_OPEN, false); 1620 } 1621 } 1622 if (false) { 1623 mWindowManager.setAppWillBeHidden(prev.appToken); 1624 mWindowManager.setAppVisibility(prev.appToken, false); 1625 } 1626 } else { 1627 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1628 if (mNoAnimActivities.contains(next)) { 1629 anim = false; 1630 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1631 } else { 1632 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1633 } 1634 } 1635 1636 Bundle resumeAnimOptions = null; 1637 if (anim) { 1638 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1639 if (opts != null) { 1640 resumeAnimOptions = opts.toBundle(); 1641 } 1642 next.applyOptionsLocked(); 1643 } else { 1644 next.clearOptionsLocked(); 1645 } 1646 1647 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1648 if (next.app != null && next.app.thread != null) { 1649 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1650 1651 // This activity is now becoming visible. 1652 mWindowManager.setAppVisibility(next.appToken, true); 1653 1654 // schedule launch ticks to collect information about slow apps. 1655 next.startLaunchTickingLocked(); 1656 1657 ActivityRecord lastResumedActivity = 1658 lastStack == null ? null :lastStack.mResumedActivity; 1659 ActivityState lastState = next.state; 1660 1661 mService.updateCpuStats(); 1662 1663 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1664 next.state = ActivityState.RESUMED; 1665 mResumedActivity = next; 1666 next.task.touchActiveTime(); 1667 mService.addRecentTaskLocked(next.task); 1668 mService.updateLruProcessLocked(next.app, true, null); 1669 updateLRUListLocked(next); 1670 mService.updateOomAdjLocked(); 1671 1672 // Have the window manager re-evaluate the orientation of 1673 // the screen based on the new activity order. 1674 boolean notUpdated = true; 1675 if (mStackSupervisor.isFrontStack(this)) { 1676 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1677 mService.mConfiguration, 1678 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1679 if (config != null) { 1680 next.frozenBeforeDestroy = true; 1681 } 1682 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1683 } 1684 1685 if (notUpdated) { 1686 // The configuration update wasn't able to keep the existing 1687 // instance of the activity, and instead started a new one. 1688 // We should be all done, but let's just make sure our activity 1689 // is still at the top and schedule another run if something 1690 // weird happened. 1691 ActivityRecord nextNext = topRunningActivityLocked(null); 1692 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1693 "Activity config changed during resume: " + next 1694 + ", new next: " + nextNext); 1695 if (nextNext != next) { 1696 // Do over! 1697 mStackSupervisor.scheduleResumeTopActivities(); 1698 } 1699 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1700 mNoAnimActivities.clear(); 1701 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1702 return true; 1703 } 1704 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1705 return false; 1706 } 1707 1708 try { 1709 // Deliver all pending results. 1710 ArrayList<ResultInfo> a = next.results; 1711 if (a != null) { 1712 final int N = a.size(); 1713 if (!next.finishing && N > 0) { 1714 if (DEBUG_RESULTS) Slog.v( 1715 TAG, "Delivering results to " + next 1716 + ": " + a); 1717 next.app.thread.scheduleSendResult(next.appToken, a); 1718 } 1719 } 1720 1721 if (next.newIntents != null) { 1722 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1723 } 1724 1725 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1726 next.userId, System.identityHashCode(next), 1727 next.task.taskId, next.shortComponentName); 1728 1729 next.sleeping = false; 1730 mService.showAskCompatModeDialogLocked(next); 1731 next.app.pendingUiClean = true; 1732 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1733 next.clearOptionsLocked(); 1734 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1735 mService.isNextTransitionForward(), resumeAnimOptions); 1736 1737 mStackSupervisor.checkReadyForSleepLocked(); 1738 1739 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1740 } catch (Exception e) { 1741 // Whoops, need to restart this activity! 1742 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1743 + lastState + ": " + next); 1744 next.state = lastState; 1745 if (lastStack != null) { 1746 lastStack.mResumedActivity = lastResumedActivity; 1747 } 1748 Slog.i(TAG, "Restarting because process died: " + next); 1749 if (!next.hasBeenLaunched) { 1750 next.hasBeenLaunched = true; 1751 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1752 mStackSupervisor.isFrontStack(lastStack)) { 1753 mWindowManager.setAppStartingWindow( 1754 next.appToken, next.packageName, next.theme, 1755 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1756 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1757 next.windowFlags, null, true); 1758 } 1759 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1760 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1761 return true; 1762 } 1763 1764 // From this point on, if something goes wrong there is no way 1765 // to recover the activity. 1766 try { 1767 next.visible = true; 1768 completeResumeLocked(next); 1769 } catch (Exception e) { 1770 // If any exception gets thrown, toss away this 1771 // activity and try the next one. 1772 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1773 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1774 "resume-exception", true); 1775 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1776 return true; 1777 } 1778 next.stopped = false; 1779 1780 } else { 1781 // Whoops, need to restart this activity! 1782 if (!next.hasBeenLaunched) { 1783 next.hasBeenLaunched = true; 1784 } else { 1785 if (SHOW_APP_STARTING_PREVIEW) { 1786 mWindowManager.setAppStartingWindow( 1787 next.appToken, next.packageName, next.theme, 1788 mService.compatibilityInfoForPackageLocked( 1789 next.info.applicationInfo), 1790 next.nonLocalizedLabel, 1791 next.labelRes, next.icon, next.logo, next.windowFlags, 1792 null, true); 1793 } 1794 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1795 } 1796 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1797 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1798 } 1799 1800 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1801 return true; 1802 } 1803 1804 private void insertTaskAtTop(TaskRecord task) { 1805 // If this is being moved to the top by another activity or being launched from the home 1806 // activity, set mOnTopOfHome accordingly. 1807 if (isOnHomeDisplay()) { 1808 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1809 final boolean fromHome = lastStack.isHomeStack(); 1810 if (!isHomeStack() && (fromHome || topTask() != task)) { 1811 task.mOnTopOfHome = fromHome; 1812 } 1813 } else { 1814 task.mOnTopOfHome = false; 1815 } 1816 1817 mTaskHistory.remove(task); 1818 // Now put task at top. 1819 int stackNdx = mTaskHistory.size(); 1820 if (!isCurrentProfileLocked(task.userId)) { 1821 // Put non-current user tasks below current user tasks. 1822 while (--stackNdx >= 0) { 1823 if (!isCurrentProfileLocked(mTaskHistory.get(stackNdx).userId)) { 1824 break; 1825 } 1826 } 1827 ++stackNdx; 1828 } 1829 mTaskHistory.add(stackNdx, task); 1830 updateTaskMovement(task, true); 1831 } 1832 1833 final void startActivityLocked(ActivityRecord r, boolean newTask, 1834 boolean doResume, boolean keepCurTransition, Bundle options) { 1835 TaskRecord rTask = r.task; 1836 final int taskId = rTask.taskId; 1837 if (taskForIdLocked(taskId) == null || newTask) { 1838 // Last activity in task had been removed or ActivityManagerService is reusing task. 1839 // Insert or replace. 1840 // Might not even be in. 1841 insertTaskAtTop(rTask); 1842 mWindowManager.moveTaskToTop(taskId); 1843 } 1844 TaskRecord task = null; 1845 if (!newTask) { 1846 // If starting in an existing task, find where that is... 1847 boolean startIt = true; 1848 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1849 task = mTaskHistory.get(taskNdx); 1850 if (task == r.task) { 1851 // Here it is! Now, if this is not yet visible to the 1852 // user, then just add it without starting; it will 1853 // get started when the user navigates back to it. 1854 if (!startIt) { 1855 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1856 + task, new RuntimeException("here").fillInStackTrace()); 1857 task.addActivityToTop(r); 1858 r.putInHistory(); 1859 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1860 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1861 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1862 r.userId, r.info.configChanges); 1863 if (VALIDATE_TOKENS) { 1864 validateAppTokensLocked(); 1865 } 1866 ActivityOptions.abort(options); 1867 return; 1868 } 1869 break; 1870 } else if (task.numFullscreen > 0) { 1871 startIt = false; 1872 } 1873 } 1874 } 1875 1876 // Place a new activity at top of stack, so it is next to interact 1877 // with the user. 1878 1879 // If we are not placing the new activity frontmost, we do not want 1880 // to deliver the onUserLeaving callback to the actual frontmost 1881 // activity 1882 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1883 mStackSupervisor.mUserLeaving = false; 1884 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1885 "startActivity() behind front, mUserLeaving=false"); 1886 } 1887 1888 task = r.task; 1889 1890 // Slot the activity into the history stack and proceed 1891 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1892 new RuntimeException("here").fillInStackTrace()); 1893 task.addActivityToTop(r); 1894 task.setFrontOfTask(); 1895 1896 r.putInHistory(); 1897 if (!isHomeStack() || numActivities() > 0) { 1898 // We want to show the starting preview window if we are 1899 // switching to a new task, or the next activity's process is 1900 // not currently running. 1901 boolean showStartingIcon = newTask; 1902 ProcessRecord proc = r.app; 1903 if (proc == null) { 1904 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1905 } 1906 if (proc == null || proc.thread == null) { 1907 showStartingIcon = true; 1908 } 1909 if (DEBUG_TRANSITION) Slog.v(TAG, 1910 "Prepare open transition: starting " + r); 1911 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1912 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1913 mNoAnimActivities.add(r); 1914 } else { 1915 mWindowManager.prepareAppTransition(newTask 1916 ? AppTransition.TRANSIT_TASK_OPEN 1917 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1918 mNoAnimActivities.remove(r); 1919 } 1920 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1921 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1922 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1923 r.info.configChanges); 1924 boolean doShow = true; 1925 if (newTask) { 1926 // Even though this activity is starting fresh, we still need 1927 // to reset it to make sure we apply affinities to move any 1928 // existing activities from other tasks in to it. 1929 // If the caller has requested that the target task be 1930 // reset, then do so. 1931 if ((r.intent.getFlags() 1932 & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1933 resetTaskIfNeededLocked(r, r); 1934 doShow = topRunningNonDelayedActivityLocked(null) == r; 1935 } 1936 } 1937 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1938 // Figure out if we are transitioning from another activity that is 1939 // "has the same starting icon" as the next one. This allows the 1940 // window manager to keep the previous window it had previously 1941 // created, if it still had one. 1942 ActivityRecord prev = mResumedActivity; 1943 if (prev != null) { 1944 // We don't want to reuse the previous starting preview if: 1945 // (1) The current activity is in a different task. 1946 if (prev.task != r.task) { 1947 prev = null; 1948 } 1949 // (2) The current activity is already displayed. 1950 else if (prev.nowVisible) { 1951 prev = null; 1952 } 1953 } 1954 mWindowManager.setAppStartingWindow( 1955 r.appToken, r.packageName, r.theme, 1956 mService.compatibilityInfoForPackageLocked( 1957 r.info.applicationInfo), r.nonLocalizedLabel, 1958 r.labelRes, r.icon, r.logo, r.windowFlags, 1959 prev != null ? prev.appToken : null, showStartingIcon); 1960 r.mStartingWindowShown = true; 1961 } 1962 } else { 1963 // If this is the first activity, don't do any fancy animations, 1964 // because there is nothing for it to animate on top of. 1965 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1966 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1967 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1968 r.info.configChanges); 1969 ActivityOptions.abort(options); 1970 options = null; 1971 } 1972 if (VALIDATE_TOKENS) { 1973 validateAppTokensLocked(); 1974 } 1975 1976 if (doResume) { 1977 mStackSupervisor.resumeTopActivitiesLocked(this, r, options); 1978 } 1979 } 1980 1981 final void validateAppTokensLocked() { 1982 mValidateAppTokens.clear(); 1983 mValidateAppTokens.ensureCapacity(numActivities()); 1984 final int numTasks = mTaskHistory.size(); 1985 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1986 TaskRecord task = mTaskHistory.get(taskNdx); 1987 final ArrayList<ActivityRecord> activities = task.mActivities; 1988 if (activities.isEmpty()) { 1989 continue; 1990 } 1991 TaskGroup group = new TaskGroup(); 1992 group.taskId = task.taskId; 1993 mValidateAppTokens.add(group); 1994 final int numActivities = activities.size(); 1995 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1996 final ActivityRecord r = activities.get(activityNdx); 1997 group.tokens.add(r.appToken); 1998 } 1999 } 2000 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 2001 } 2002 2003 /** 2004 * Perform a reset of the given task, if needed as part of launching it. 2005 * Returns the new HistoryRecord at the top of the task. 2006 */ 2007 /** 2008 * Helper method for #resetTaskIfNeededLocked. 2009 * We are inside of the task being reset... we'll either finish this activity, push it out 2010 * for another task, or leave it as-is. 2011 * @param task The task containing the Activity (taskTop) that might be reset. 2012 * @param forceReset 2013 * @return An ActivityOptions that needs to be processed. 2014 */ 2015 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 2016 ActivityOptions topOptions = null; 2017 2018 int replyChainEnd = -1; 2019 boolean canMoveOptions = true; 2020 2021 // We only do this for activities that are not the root of the task (since if we finish 2022 // the root, we may no longer have the task!). 2023 final ArrayList<ActivityRecord> activities = task.mActivities; 2024 final int numActivities = activities.size(); 2025 for (int i = numActivities - 1; i > 0; --i ) { 2026 ActivityRecord target = activities.get(i); 2027 2028 final int flags = target.info.flags; 2029 final boolean finishOnTaskLaunch = 2030 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2031 final boolean allowTaskReparenting = 2032 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2033 final boolean clearWhenTaskReset = 2034 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2035 2036 if (!finishOnTaskLaunch 2037 && !clearWhenTaskReset 2038 && target.resultTo != null) { 2039 // If this activity is sending a reply to a previous 2040 // activity, we can't do anything with it now until 2041 // we reach the start of the reply chain. 2042 // XXX note that we are assuming the result is always 2043 // to the previous activity, which is almost always 2044 // the case but we really shouldn't count on. 2045 if (replyChainEnd < 0) { 2046 replyChainEnd = i; 2047 } 2048 } else if (!finishOnTaskLaunch 2049 && !clearWhenTaskReset 2050 && allowTaskReparenting 2051 && target.taskAffinity != null 2052 && !target.taskAffinity.equals(task.affinity)) { 2053 // If this activity has an affinity for another 2054 // task, then we need to move it out of here. We will 2055 // move it as far out of the way as possible, to the 2056 // bottom of the activity stack. This also keeps it 2057 // correctly ordered with any activities we previously 2058 // moved. 2059 final ThumbnailHolder newThumbHolder; 2060 final TaskRecord targetTask; 2061 final ActivityRecord bottom = 2062 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2063 mTaskHistory.get(0).mActivities.get(0) : null; 2064 if (bottom != null && target.taskAffinity != null 2065 && target.taskAffinity.equals(bottom.task.affinity)) { 2066 // If the activity currently at the bottom has the 2067 // same task affinity as the one we are moving, 2068 // then merge it into the same task. 2069 targetTask = bottom.task; 2070 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 2071 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2072 + " out to bottom task " + bottom.task); 2073 } else { 2074 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2075 null, null, null, false); 2076 newThumbHolder = targetTask; 2077 targetTask.affinityIntent = target.intent; 2078 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2079 + " out to new task " + target.task); 2080 } 2081 2082 target.thumbHolder = newThumbHolder; 2083 2084 final int targetTaskId = targetTask.taskId; 2085 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2086 2087 boolean noOptions = canMoveOptions; 2088 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2089 for (int srcPos = start; srcPos >= i; --srcPos) { 2090 final ActivityRecord p = activities.get(srcPos); 2091 if (p.finishing) { 2092 continue; 2093 } 2094 2095 ThumbnailHolder curThumbHolder = p.thumbHolder; 2096 canMoveOptions = false; 2097 if (noOptions && topOptions == null) { 2098 topOptions = p.takeOptionsLocked(); 2099 if (topOptions != null) { 2100 noOptions = false; 2101 } 2102 } 2103 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2104 + task + " adding to task=" + targetTask 2105 + " Callers=" + Debug.getCallers(4)); 2106 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2107 + " out to target's task " + target.task); 2108 p.setTask(targetTask, curThumbHolder, false); 2109 targetTask.addActivityAtBottom(p); 2110 2111 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2112 } 2113 2114 mWindowManager.moveTaskToBottom(targetTaskId); 2115 if (VALIDATE_TOKENS) { 2116 validateAppTokensLocked(); 2117 } 2118 2119 replyChainEnd = -1; 2120 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2121 // If the activity should just be removed -- either 2122 // because it asks for it, or the task should be 2123 // cleared -- then finish it and anything that is 2124 // part of its reply chain. 2125 int end; 2126 if (clearWhenTaskReset) { 2127 // In this case, we want to finish this activity 2128 // and everything above it, so be sneaky and pretend 2129 // like these are all in the reply chain. 2130 end = numActivities - 1; 2131 } else if (replyChainEnd < 0) { 2132 end = i; 2133 } else { 2134 end = replyChainEnd; 2135 } 2136 boolean noOptions = canMoveOptions; 2137 for (int srcPos = i; srcPos <= end; srcPos++) { 2138 ActivityRecord p = activities.get(srcPos); 2139 if (p.finishing) { 2140 continue; 2141 } 2142 canMoveOptions = false; 2143 if (noOptions && topOptions == null) { 2144 topOptions = p.takeOptionsLocked(); 2145 if (topOptions != null) { 2146 noOptions = false; 2147 } 2148 } 2149 if (DEBUG_TASKS) Slog.w(TAG, 2150 "resetTaskIntendedTask: calling finishActivity on " + p); 2151 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2152 end--; 2153 srcPos--; 2154 } 2155 } 2156 replyChainEnd = -1; 2157 } else { 2158 // If we were in the middle of a chain, well the 2159 // activity that started it all doesn't want anything 2160 // special, so leave it all as-is. 2161 replyChainEnd = -1; 2162 } 2163 } 2164 2165 return topOptions; 2166 } 2167 2168 /** 2169 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2170 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2171 * @param affinityTask The task we are looking for an affinity to. 2172 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2173 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2174 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2175 */ 2176 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2177 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2178 int replyChainEnd = -1; 2179 final int taskId = task.taskId; 2180 final String taskAffinity = task.affinity; 2181 2182 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2183 final int numActivities = activities.size(); 2184 // Do not operate on the root Activity. 2185 for (int i = numActivities - 1; i > 0; --i) { 2186 ActivityRecord target = activities.get(i); 2187 2188 final int flags = target.info.flags; 2189 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2190 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2191 2192 if (target.resultTo != null) { 2193 // If this activity is sending a reply to a previous 2194 // activity, we can't do anything with it now until 2195 // we reach the start of the reply chain. 2196 // XXX note that we are assuming the result is always 2197 // to the previous activity, which is almost always 2198 // the case but we really shouldn't count on. 2199 if (replyChainEnd < 0) { 2200 replyChainEnd = i; 2201 } 2202 } else if (topTaskIsHigher 2203 && allowTaskReparenting 2204 && taskAffinity != null 2205 && taskAffinity.equals(target.taskAffinity)) { 2206 // This activity has an affinity for our task. Either remove it if we are 2207 // clearing or move it over to our task. Note that 2208 // we currently punt on the case where we are resetting a 2209 // task that is not at the top but who has activities above 2210 // with an affinity to it... this is really not a normal 2211 // case, and we will need to later pull that task to the front 2212 // and usually at that point we will do the reset and pick 2213 // up those remaining activities. (This only happens if 2214 // someone starts an activity in a new task from an activity 2215 // in a task that is not currently on top.) 2216 if (forceReset || finishOnTaskLaunch) { 2217 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2218 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2219 for (int srcPos = start; srcPos >= i; --srcPos) { 2220 final ActivityRecord p = activities.get(srcPos); 2221 if (p.finishing) { 2222 continue; 2223 } 2224 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2225 } 2226 } else { 2227 if (taskInsertionPoint < 0) { 2228 taskInsertionPoint = task.mActivities.size(); 2229 2230 } 2231 2232 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2233 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2234 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2235 for (int srcPos = start; srcPos >= i; --srcPos) { 2236 final ActivityRecord p = activities.get(srcPos); 2237 p.setTask(task, null, false); 2238 task.addActivityAtIndex(taskInsertionPoint, p); 2239 2240 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2241 + " to stack at " + task, 2242 new RuntimeException("here").fillInStackTrace()); 2243 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2244 + " in to resetting task " + task); 2245 mWindowManager.setAppGroupId(p.appToken, taskId); 2246 } 2247 mWindowManager.moveTaskToTop(taskId); 2248 if (VALIDATE_TOKENS) { 2249 validateAppTokensLocked(); 2250 } 2251 2252 // Now we've moved it in to place... but what if this is 2253 // a singleTop activity and we have put it on top of another 2254 // instance of the same activity? Then we drop the instance 2255 // below so it remains singleTop. 2256 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2257 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2258 int targetNdx = taskActivities.indexOf(target); 2259 if (targetNdx > 0) { 2260 ActivityRecord p = taskActivities.get(targetNdx - 1); 2261 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2262 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2263 false); 2264 } 2265 } 2266 } 2267 } 2268 2269 replyChainEnd = -1; 2270 } 2271 } 2272 return taskInsertionPoint; 2273 } 2274 2275 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2276 ActivityRecord newActivity) { 2277 boolean forceReset = 2278 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2279 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2280 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2281 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2282 forceReset = true; 2283 } 2284 } 2285 2286 final TaskRecord task = taskTop.task; 2287 2288 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2289 * for remaining tasks. Used for later tasks to reparent to task. */ 2290 boolean taskFound = false; 2291 2292 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2293 ActivityOptions topOptions = null; 2294 2295 // Preserve the location for reparenting in the new task. 2296 int reparentInsertionPoint = -1; 2297 2298 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2299 final TaskRecord targetTask = mTaskHistory.get(i); 2300 2301 if (targetTask == task) { 2302 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2303 taskFound = true; 2304 } else { 2305 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2306 taskFound, forceReset, reparentInsertionPoint); 2307 } 2308 } 2309 2310 int taskNdx = mTaskHistory.indexOf(task); 2311 do { 2312 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2313 } while (taskTop == null && taskNdx >= 0); 2314 2315 if (topOptions != null) { 2316 // If we got some ActivityOptions from an activity on top that 2317 // was removed from the task, propagate them to the new real top. 2318 if (taskTop != null) { 2319 taskTop.updateOptionsLocked(topOptions); 2320 } else { 2321 topOptions.abort(); 2322 } 2323 } 2324 2325 return taskTop; 2326 } 2327 2328 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2329 String resultWho, int requestCode, int resultCode, Intent data) { 2330 2331 if (callingUid > 0) { 2332 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2333 data, r.getUriPermissionsLocked()); 2334 } 2335 2336 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2337 + " : who=" + resultWho + " req=" + requestCode 2338 + " res=" + resultCode + " data=" + data); 2339 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2340 try { 2341 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2342 list.add(new ResultInfo(resultWho, requestCode, 2343 resultCode, data)); 2344 r.app.thread.scheduleSendResult(r.appToken, list); 2345 return; 2346 } catch (Exception e) { 2347 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2348 } 2349 } 2350 2351 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2352 } 2353 2354 private void adjustFocusedActivityLocked(ActivityRecord r) { 2355 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2356 ActivityRecord next = topRunningActivityLocked(null); 2357 if (next != r) { 2358 final TaskRecord task = r.task; 2359 if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) { 2360 mStackSupervisor.moveHomeToTop(); 2361 } 2362 } 2363 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2364 if (top != null) { 2365 mService.setFocusedActivityLocked(top); 2366 } 2367 } 2368 } 2369 2370 final void stopActivityLocked(ActivityRecord r) { 2371 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2372 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2373 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2374 if (!r.finishing) { 2375 if (!mService.isSleeping()) { 2376 if (DEBUG_STATES) { 2377 Slog.d(TAG, "no-history finish of " + r); 2378 } 2379 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2380 "no-history", false); 2381 } else { 2382 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2383 + " on stop because we're just sleeping"); 2384 } 2385 } 2386 } 2387 2388 if (r.app != null && r.app.thread != null) { 2389 adjustFocusedActivityLocked(r); 2390 r.resumeKeyDispatchingLocked(); 2391 try { 2392 r.stopped = false; 2393 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2394 + " (stop requested)"); 2395 r.state = ActivityState.STOPPING; 2396 if (DEBUG_VISBILITY) Slog.v( 2397 TAG, "Stopping visible=" + r.visible + " for " + r); 2398 if (!r.visible) { 2399 mWindowManager.setAppVisibility(r.appToken, false); 2400 } 2401 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2402 if (mService.isSleepingOrShuttingDown()) { 2403 r.setSleeping(true); 2404 } 2405 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2406 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2407 } catch (Exception e) { 2408 // Maybe just ignore exceptions here... if the process 2409 // has crashed, our death notification will clean things 2410 // up. 2411 Slog.w(TAG, "Exception thrown during pause", e); 2412 // Just in case, assume it to be stopped. 2413 r.stopped = true; 2414 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2415 r.state = ActivityState.STOPPED; 2416 if (r.configDestroy) { 2417 destroyActivityLocked(r, true, false, "stop-except"); 2418 } 2419 } 2420 } 2421 } 2422 2423 /** 2424 * @return Returns true if the activity is being finished, false if for 2425 * some reason it is being left as-is. 2426 */ 2427 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2428 Intent resultData, String reason, boolean oomAdj) { 2429 ActivityRecord r = isInStackLocked(token); 2430 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2431 TAG, "Finishing activity token=" + token + " r=" 2432 + ", result=" + resultCode + ", data=" + resultData 2433 + ", reason=" + reason); 2434 if (r == null) { 2435 return false; 2436 } 2437 2438 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2439 return true; 2440 } 2441 2442 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2443 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2444 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2445 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2446 ActivityRecord r = activities.get(activityNdx); 2447 if (r.resultTo == self && r.requestCode == requestCode) { 2448 if ((r.resultWho == null && resultWho == null) || 2449 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2450 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2451 false); 2452 } 2453 } 2454 } 2455 } 2456 mService.updateOomAdjLocked(); 2457 } 2458 2459 final void finishTopRunningActivityLocked(ProcessRecord app) { 2460 ActivityRecord r = topRunningActivityLocked(null); 2461 if (r != null && r.app == app) { 2462 // If the top running activity is from this crashing 2463 // process, then terminate it to avoid getting in a loop. 2464 Slog.w(TAG, " Force finishing activity " 2465 + r.intent.getComponent().flattenToShortString()); 2466 int taskNdx = mTaskHistory.indexOf(r.task); 2467 int activityNdx = r.task.mActivities.indexOf(r); 2468 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2469 // Also terminate any activities below it that aren't yet 2470 // stopped, to avoid a situation where one will get 2471 // re-start our crashing activity once it gets resumed again. 2472 --activityNdx; 2473 if (activityNdx < 0) { 2474 do { 2475 --taskNdx; 2476 if (taskNdx < 0) { 2477 break; 2478 } 2479 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2480 } while (activityNdx < 0); 2481 } 2482 if (activityNdx >= 0) { 2483 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2484 if (r.state == ActivityState.RESUMED 2485 || r.state == ActivityState.PAUSING 2486 || r.state == ActivityState.PAUSED) { 2487 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2488 Slog.w(TAG, " Force finishing activity " 2489 + r.intent.getComponent().flattenToShortString()); 2490 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2491 } 2492 } 2493 } 2494 } 2495 } 2496 2497 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2498 ArrayList<ActivityRecord> activities = r.task.mActivities; 2499 for (int index = activities.indexOf(r); index >= 0; --index) { 2500 ActivityRecord cur = activities.get(index); 2501 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2502 break; 2503 } 2504 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2505 } 2506 return true; 2507 } 2508 2509 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2510 // send the result 2511 ActivityRecord resultTo = r.resultTo; 2512 if (resultTo != null) { 2513 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2514 + " who=" + r.resultWho + " req=" + r.requestCode 2515 + " res=" + resultCode + " data=" + resultData); 2516 if (r.info.applicationInfo.uid > 0) { 2517 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2518 resultTo.packageName, resultData, 2519 resultTo.getUriPermissionsLocked()); 2520 } 2521 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2522 resultData); 2523 r.resultTo = null; 2524 } 2525 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2526 2527 // Make sure this HistoryRecord is not holding on to other resources, 2528 // because clients have remote IPC references to this object so we 2529 // can't assume that will go away and want to avoid circular IPC refs. 2530 r.results = null; 2531 r.pendingResults = null; 2532 r.newIntents = null; 2533 r.icicle = null; 2534 } 2535 2536 /** 2537 * @return Returns true if this activity has been removed from the history 2538 * list, or false if it is still in the list and will be removed later. 2539 */ 2540 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2541 String reason, boolean oomAdj) { 2542 if (r.finishing) { 2543 Slog.w(TAG, "Duplicate finish request for " + r); 2544 return false; 2545 } 2546 2547 r.makeFinishing(); 2548 final TaskRecord task = r.task; 2549 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2550 r.userId, System.identityHashCode(r), 2551 task.taskId, r.shortComponentName, reason); 2552 final ArrayList<ActivityRecord> activities = task.mActivities; 2553 final int index = activities.indexOf(r); 2554 if (index < (activities.size() - 1)) { 2555 task.setFrontOfTask(); 2556 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2557 // If the caller asked that this activity (and all above it) 2558 // be cleared when the task is reset, don't lose that information, 2559 // but propagate it up to the next activity. 2560 ActivityRecord next = activities.get(index+1); 2561 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2562 } 2563 } 2564 2565 r.pauseKeyDispatchingLocked(); 2566 2567 adjustFocusedActivityLocked(r); 2568 2569 finishActivityResultsLocked(r, resultCode, resultData); 2570 2571 if (mResumedActivity == r) { 2572 boolean endTask = index <= 0; 2573 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2574 "Prepare close transition: finishing " + r); 2575 mWindowManager.prepareAppTransition(endTask 2576 ? AppTransition.TRANSIT_TASK_CLOSE 2577 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2578 2579 // Tell window manager to prepare for this one to be removed. 2580 mWindowManager.setAppVisibility(r.appToken, false); 2581 2582 if (mPausingActivity == null) { 2583 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2584 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2585 startPausingLocked(false, false); 2586 } 2587 2588 if (endTask) { 2589 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2590 } 2591 } else if (r.state != ActivityState.PAUSING) { 2592 // If the activity is PAUSING, we will complete the finish once 2593 // it is done pausing; else we can just directly finish it here. 2594 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2595 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2596 } else { 2597 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2598 } 2599 2600 return false; 2601 } 2602 2603 static final int FINISH_IMMEDIATELY = 0; 2604 static final int FINISH_AFTER_PAUSE = 1; 2605 static final int FINISH_AFTER_VISIBLE = 2; 2606 2607 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2608 // First things first: if this activity is currently visible, 2609 // and the resumed activity is not yet visible, then hold off on 2610 // finishing until the resumed one becomes visible. 2611 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2612 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2613 mStackSupervisor.mStoppingActivities.add(r); 2614 if (mStackSupervisor.mStoppingActivities.size() > 3 2615 || r.frontOfTask && mTaskHistory.size() <= 1) { 2616 // If we already have a few activities waiting to stop, 2617 // then give up on things going idle and start clearing 2618 // them out. Or if r is the last of activity of the last task the stack 2619 // will be empty and must be cleared immediately. 2620 mStackSupervisor.scheduleIdleLocked(); 2621 } else { 2622 mStackSupervisor.checkReadyForSleepLocked(); 2623 } 2624 } 2625 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2626 + " (finish requested)"); 2627 r.state = ActivityState.STOPPING; 2628 if (oomAdj) { 2629 mService.updateOomAdjLocked(); 2630 } 2631 return r; 2632 } 2633 2634 // make sure the record is cleaned out of other places. 2635 mStackSupervisor.mStoppingActivities.remove(r); 2636 mStackSupervisor.mGoingToSleepActivities.remove(r); 2637 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2638 if (mResumedActivity == r) { 2639 mResumedActivity = null; 2640 } 2641 final ActivityState prevState = r.state; 2642 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2643 r.state = ActivityState.FINISHING; 2644 2645 if (mode == FINISH_IMMEDIATELY 2646 || prevState == ActivityState.STOPPED 2647 || prevState == ActivityState.INITIALIZING) { 2648 // If this activity is already stopped, we can just finish 2649 // it right now. 2650 boolean activityRemoved = destroyActivityLocked(r, true, 2651 oomAdj, "finish-imm"); 2652 if (activityRemoved) { 2653 mStackSupervisor.resumeTopActivitiesLocked(); 2654 } 2655 return activityRemoved ? null : r; 2656 } 2657 2658 // Need to go through the full pause cycle to get this 2659 // activity into the stopped state and then finish it. 2660 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2661 mStackSupervisor.mFinishingActivities.add(r); 2662 r.resumeKeyDispatchingLocked(); 2663 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2664 return r; 2665 } 2666 2667 void finishAllActivitiesLocked() { 2668 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2669 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2670 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2671 final ActivityRecord r = activities.get(activityNdx); 2672 if (r.finishing) { 2673 continue; 2674 } 2675 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2676 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2677 } 2678 } 2679 } 2680 2681 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2682 Intent resultData) { 2683 final ActivityRecord srec = ActivityRecord.forToken(token); 2684 final TaskRecord task = srec.task; 2685 final ArrayList<ActivityRecord> activities = task.mActivities; 2686 final int start = activities.indexOf(srec); 2687 if (!mTaskHistory.contains(task) || (start < 0)) { 2688 return false; 2689 } 2690 int finishTo = start - 1; 2691 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2692 boolean foundParentInTask = false; 2693 final ComponentName dest = destIntent.getComponent(); 2694 if (start > 0 && dest != null) { 2695 for (int i = finishTo; i >= 0; i--) { 2696 ActivityRecord r = activities.get(i); 2697 if (r.info.packageName.equals(dest.getPackageName()) && 2698 r.info.name.equals(dest.getClassName())) { 2699 finishTo = i; 2700 parent = r; 2701 foundParentInTask = true; 2702 break; 2703 } 2704 } 2705 } 2706 2707 IActivityController controller = mService.mController; 2708 if (controller != null) { 2709 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2710 if (next != null) { 2711 // ask watcher if this is allowed 2712 boolean resumeOK = true; 2713 try { 2714 resumeOK = controller.activityResuming(next.packageName); 2715 } catch (RemoteException e) { 2716 mService.mController = null; 2717 Watchdog.getInstance().setActivityController(null); 2718 } 2719 2720 if (!resumeOK) { 2721 return false; 2722 } 2723 } 2724 } 2725 final long origId = Binder.clearCallingIdentity(); 2726 for (int i = start; i > finishTo; i--) { 2727 ActivityRecord r = activities.get(i); 2728 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2729 // Only return the supplied result for the first activity finished 2730 resultCode = Activity.RESULT_CANCELED; 2731 resultData = null; 2732 } 2733 2734 if (parent != null && foundParentInTask) { 2735 final int parentLaunchMode = parent.info.launchMode; 2736 final int destIntentFlags = destIntent.getFlags(); 2737 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2738 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2739 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2740 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2741 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2742 } else { 2743 try { 2744 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2745 destIntent.getComponent(), 0, srec.userId); 2746 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2747 null, aInfo, null, null, parent.appToken, null, 2748 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2749 0, null, true, null, null); 2750 foundParentInTask = res == ActivityManager.START_SUCCESS; 2751 } catch (RemoteException e) { 2752 foundParentInTask = false; 2753 } 2754 requestFinishActivityLocked(parent.appToken, resultCode, 2755 resultData, "navigate-up", true); 2756 } 2757 } 2758 Binder.restoreCallingIdentity(origId); 2759 return foundParentInTask; 2760 } 2761 /** 2762 * Perform the common clean-up of an activity record. This is called both 2763 * as part of destroyActivityLocked() (when destroying the client-side 2764 * representation) and cleaning things up as a result of its hosting 2765 * processing going away, in which case there is no remaining client-side 2766 * state to destroy so only the cleanup here is needed. 2767 */ 2768 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2769 boolean setState) { 2770 if (mResumedActivity == r) { 2771 mResumedActivity = null; 2772 } 2773 if (mPausingActivity == r) { 2774 mPausingActivity = null; 2775 } 2776 mService.clearFocusedActivity(r); 2777 2778 r.configDestroy = false; 2779 r.frozenBeforeDestroy = false; 2780 2781 if (setState) { 2782 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2783 r.state = ActivityState.DESTROYED; 2784 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2785 r.app = null; 2786 } 2787 2788 // Make sure this record is no longer in the pending finishes list. 2789 // This could happen, for example, if we are trimming activities 2790 // down to the max limit while they are still waiting to finish. 2791 mStackSupervisor.mFinishingActivities.remove(r); 2792 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2793 2794 // Remove any pending results. 2795 if (r.finishing && r.pendingResults != null) { 2796 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2797 PendingIntentRecord rec = apr.get(); 2798 if (rec != null) { 2799 mService.cancelIntentSenderLocked(rec, false); 2800 } 2801 } 2802 r.pendingResults = null; 2803 } 2804 2805 if (cleanServices) { 2806 cleanUpActivityServicesLocked(r); 2807 } 2808 2809 // Get rid of any pending idle timeouts. 2810 removeTimeoutsForActivityLocked(r); 2811 } 2812 2813 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2814 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2815 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2816 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2817 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2818 r.finishLaunchTickingLocked(); 2819 } 2820 2821 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2822 mStackSupervisor.removeChildActivityContainers(r); 2823 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2824 r.makeFinishing(); 2825 if (DEBUG_ADD_REMOVE) { 2826 RuntimeException here = new RuntimeException("here"); 2827 here.fillInStackTrace(); 2828 Slog.i(TAG, "Removing activity " + r + " from stack"); 2829 } 2830 r.takeFromHistory(); 2831 removeTimeoutsForActivityLocked(r); 2832 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2833 r.state = ActivityState.DESTROYED; 2834 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2835 r.app = null; 2836 mWindowManager.removeAppToken(r.appToken); 2837 if (VALIDATE_TOKENS) { 2838 validateAppTokensLocked(); 2839 } 2840 final TaskRecord task = r.task; 2841 if (task != null && task.removeActivity(r)) { 2842 if (DEBUG_STACK) Slog.i(TAG, 2843 "removeActivityFromHistoryLocked: last activity removed from " + this); 2844 if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) { 2845 mStackSupervisor.moveHomeToTop(); 2846 } 2847 removeTask(task); 2848 } 2849 cleanUpActivityServicesLocked(r); 2850 r.removeUriPermissionsLocked(); 2851 } 2852 2853 /** 2854 * Perform clean-up of service connections in an activity record. 2855 */ 2856 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2857 // Throw away any services that have been bound by this activity. 2858 if (r.connections != null) { 2859 Iterator<ConnectionRecord> it = r.connections.iterator(); 2860 while (it.hasNext()) { 2861 ConnectionRecord c = it.next(); 2862 mService.mServices.removeConnectionLocked(c, null, r); 2863 } 2864 r.connections = null; 2865 } 2866 } 2867 2868 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2869 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2870 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2871 mHandler.sendMessage(msg); 2872 } 2873 2874 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2875 boolean lastIsOpaque = false; 2876 boolean activityRemoved = false; 2877 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2878 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2879 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2880 final ActivityRecord r = activities.get(activityNdx); 2881 if (r.finishing) { 2882 continue; 2883 } 2884 if (r.fullscreen) { 2885 lastIsOpaque = true; 2886 } 2887 if (owner != null && r.app != owner) { 2888 continue; 2889 } 2890 if (!lastIsOpaque) { 2891 continue; 2892 } 2893 // We can destroy this one if we have its icicle saved and 2894 // it is not in the process of pausing/stopping/finishing. 2895 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2896 && r.haveState && !r.visible && r.stopped 2897 && r.state != ActivityState.DESTROYING 2898 && r.state != ActivityState.DESTROYED) { 2899 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2900 + " resumed=" + mResumedActivity 2901 + " pausing=" + mPausingActivity); 2902 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2903 activityRemoved = true; 2904 } 2905 } 2906 } 2907 } 2908 if (activityRemoved) { 2909 mStackSupervisor.resumeTopActivitiesLocked(); 2910 } 2911 } 2912 2913 /** 2914 * Destroy the current CLIENT SIDE instance of an activity. This may be 2915 * called both when actually finishing an activity, or when performing 2916 * a configuration switch where we destroy the current client-side object 2917 * but then create a new client-side object for this same HistoryRecord. 2918 */ 2919 final boolean destroyActivityLocked(ActivityRecord r, 2920 boolean removeFromApp, boolean oomAdj, String reason) { 2921 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2922 TAG, "Removing activity from " + reason + ": token=" + r 2923 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2924 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2925 r.userId, System.identityHashCode(r), 2926 r.task.taskId, r.shortComponentName, reason); 2927 2928 boolean removedFromHistory = false; 2929 2930 cleanUpActivityLocked(r, false, false); 2931 2932 final boolean hadApp = r.app != null; 2933 2934 if (hadApp) { 2935 if (removeFromApp) { 2936 r.app.activities.remove(r); 2937 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2938 mService.mHeavyWeightProcess = null; 2939 mService.mHandler.sendEmptyMessage( 2940 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2941 } 2942 if (r.app.activities.isEmpty()) { 2943 // No longer have activities, so update LRU list and oom adj. 2944 mService.updateLruProcessLocked(r.app, false, null); 2945 mService.updateOomAdjLocked(); 2946 } 2947 } 2948 2949 boolean skipDestroy = false; 2950 2951 try { 2952 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2953 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2954 r.configChangeFlags); 2955 } catch (Exception e) { 2956 // We can just ignore exceptions here... if the process 2957 // has crashed, our death notification will clean things 2958 // up. 2959 //Slog.w(TAG, "Exception thrown during finish", e); 2960 if (r.finishing) { 2961 removeActivityFromHistoryLocked(r); 2962 removedFromHistory = true; 2963 skipDestroy = true; 2964 } 2965 } 2966 2967 r.nowVisible = false; 2968 2969 // If the activity is finishing, we need to wait on removing it 2970 // from the list to give it a chance to do its cleanup. During 2971 // that time it may make calls back with its token so we need to 2972 // be able to find it on the list and so we don't want to remove 2973 // it from the list yet. Otherwise, we can just immediately put 2974 // it in the destroyed state since we are not removing it from the 2975 // list. 2976 if (r.finishing && !skipDestroy) { 2977 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2978 + " (destroy requested)"); 2979 r.state = ActivityState.DESTROYING; 2980 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2981 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2982 } else { 2983 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 2984 r.state = ActivityState.DESTROYED; 2985 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2986 r.app = null; 2987 } 2988 } else { 2989 // remove this record from the history. 2990 if (r.finishing) { 2991 removeActivityFromHistoryLocked(r); 2992 removedFromHistory = true; 2993 } else { 2994 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 2995 r.state = ActivityState.DESTROYED; 2996 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2997 r.app = null; 2998 } 2999 } 3000 3001 r.configChangeFlags = 0; 3002 3003 if (!mLRUActivities.remove(r) && hadApp) { 3004 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 3005 } 3006 3007 return removedFromHistory; 3008 } 3009 3010 final void activityDestroyedLocked(IBinder token) { 3011 final long origId = Binder.clearCallingIdentity(); 3012 try { 3013 ActivityRecord r = ActivityRecord.forToken(token); 3014 if (r != null) { 3015 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3016 } 3017 3018 if (isInStackLocked(token) != null) { 3019 if (r.state == ActivityState.DESTROYING) { 3020 cleanUpActivityLocked(r, true, false); 3021 removeActivityFromHistoryLocked(r); 3022 } 3023 } 3024 mStackSupervisor.resumeTopActivitiesLocked(); 3025 } finally { 3026 Binder.restoreCallingIdentity(origId); 3027 } 3028 } 3029 3030 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3031 ProcessRecord app, String listName) { 3032 int i = list.size(); 3033 if (DEBUG_CLEANUP) Slog.v( 3034 TAG, "Removing app " + app + " from list " + listName 3035 + " with " + i + " entries"); 3036 while (i > 0) { 3037 i--; 3038 ActivityRecord r = list.get(i); 3039 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3040 if (r.app == app) { 3041 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3042 list.remove(i); 3043 removeTimeoutsForActivityLocked(r); 3044 } 3045 } 3046 } 3047 3048 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3049 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3050 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3051 "mStoppingActivities"); 3052 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3053 "mGoingToSleepActivities"); 3054 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3055 "mWaitingVisibleActivities"); 3056 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3057 "mFinishingActivities"); 3058 3059 boolean hasVisibleActivities = false; 3060 3061 // Clean out the history list. 3062 int i = numActivities(); 3063 if (DEBUG_CLEANUP) Slog.v( 3064 TAG, "Removing app " + app + " from history with " + i + " entries"); 3065 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3066 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3067 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3068 final ActivityRecord r = activities.get(activityNdx); 3069 --i; 3070 if (DEBUG_CLEANUP) Slog.v( 3071 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3072 if (r.app == app) { 3073 boolean remove; 3074 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3075 // Don't currently have state for the activity, or 3076 // it is finishing -- always remove it. 3077 remove = true; 3078 } else if (r.launchCount > 2 && 3079 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3080 // We have launched this activity too many times since it was 3081 // able to run, so give up and remove it. 3082 remove = true; 3083 } else { 3084 // The process may be gone, but the activity lives on! 3085 remove = false; 3086 } 3087 if (remove) { 3088 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3089 RuntimeException here = new RuntimeException("here"); 3090 here.fillInStackTrace(); 3091 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3092 + ": haveState=" + r.haveState 3093 + " stateNotNeeded=" + r.stateNotNeeded 3094 + " finishing=" + r.finishing 3095 + " state=" + r.state, here); 3096 } 3097 if (!r.finishing) { 3098 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3099 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3100 r.userId, System.identityHashCode(r), 3101 r.task.taskId, r.shortComponentName, 3102 "proc died without state saved"); 3103 if (r.state == ActivityState.RESUMED) { 3104 mService.updateUsageStats(r, false); 3105 } 3106 } 3107 removeActivityFromHistoryLocked(r); 3108 3109 } else { 3110 // We have the current state for this activity, so 3111 // it can be restarted later when needed. 3112 if (localLOGV) Slog.v( 3113 TAG, "Keeping entry, setting app to null"); 3114 if (r.visible) { 3115 hasVisibleActivities = true; 3116 } 3117 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3118 + r); 3119 r.app = null; 3120 r.nowVisible = false; 3121 if (!r.haveState) { 3122 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3123 "App died, clearing saved state of " + r); 3124 r.icicle = null; 3125 } 3126 } 3127 3128 cleanUpActivityLocked(r, true, true); 3129 } 3130 } 3131 } 3132 3133 return hasVisibleActivities; 3134 } 3135 3136 final void updateTransitLocked(int transit, Bundle options) { 3137 if (options != null) { 3138 ActivityRecord r = topRunningActivityLocked(null); 3139 if (r != null && r.state != ActivityState.RESUMED) { 3140 r.updateOptionsLocked(options); 3141 } else { 3142 ActivityOptions.abort(options); 3143 } 3144 } 3145 mWindowManager.prepareAppTransition(transit, false); 3146 } 3147 3148 void updateTaskMovement(TaskRecord task, boolean toFront) { 3149 if (task.isPersistable) { 3150 task.mLastTimeMoved = System.currentTimeMillis(); 3151 // Sign is used to keep tasks sorted when persisted. Tasks sent to the bottom most 3152 // recently will be most negative, tasks sent to the bottom before that will be less 3153 // negative. Similarly for recent tasks moved to the top which will be most positive. 3154 if (!toFront) { 3155 task.mLastTimeMoved *= -1; 3156 } 3157 } 3158 } 3159 3160 void moveHomeTaskToTop() { 3161 final int top = mTaskHistory.size() - 1; 3162 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3163 final TaskRecord task = mTaskHistory.get(taskNdx); 3164 if (task.isHomeTask()) { 3165 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task); 3166 mTaskHistory.remove(taskNdx); 3167 mTaskHistory.add(top, task); 3168 updateTaskMovement(task, true); 3169 mWindowManager.moveTaskToTop(task.taskId); 3170 return; 3171 } 3172 } 3173 } 3174 3175 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3176 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3177 3178 final int numTasks = mTaskHistory.size(); 3179 final int index = mTaskHistory.indexOf(tr); 3180 if (numTasks == 0 || index < 0) { 3181 // nothing to do! 3182 if (reason != null && 3183 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3184 ActivityOptions.abort(options); 3185 } else { 3186 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3187 } 3188 return; 3189 } 3190 3191 moveToFront(); 3192 3193 // Shift all activities with this task up to the top 3194 // of the stack, keeping them in the same internal order. 3195 insertTaskAtTop(tr); 3196 3197 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3198 if (reason != null && 3199 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3200 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3201 ActivityRecord r = topRunningActivityLocked(null); 3202 if (r != null) { 3203 mNoAnimActivities.add(r); 3204 } 3205 ActivityOptions.abort(options); 3206 } else { 3207 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3208 } 3209 3210 mWindowManager.moveTaskToTop(tr.taskId); 3211 3212 mStackSupervisor.resumeTopActivitiesLocked(); 3213 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3214 3215 if (VALIDATE_TOKENS) { 3216 validateAppTokensLocked(); 3217 } 3218 } 3219 3220 /** 3221 * Worker method for rearranging history stack. Implements the function of moving all 3222 * activities for a specific task (gathering them if disjoint) into a single group at the 3223 * bottom of the stack. 3224 * 3225 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3226 * to premeptively cancel the move. 3227 * 3228 * @param taskId The taskId to collect and move to the bottom. 3229 * @return Returns true if the move completed, false if not. 3230 */ 3231 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3232 final TaskRecord tr = taskForIdLocked(taskId); 3233 if (tr == null) { 3234 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3235 return false; 3236 } 3237 3238 Slog.i(TAG, "moveTaskToBack: " + tr); 3239 3240 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3241 3242 // If we have a watcher, preflight the move before committing to it. First check 3243 // for *other* available tasks, but if none are available, then try again allowing the 3244 // current task to be selected. 3245 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3246 ActivityRecord next = topRunningActivityLocked(null, taskId); 3247 if (next == null) { 3248 next = topRunningActivityLocked(null, 0); 3249 } 3250 if (next != null) { 3251 // ask watcher if this is allowed 3252 boolean moveOK = true; 3253 try { 3254 moveOK = mService.mController.activityResuming(next.packageName); 3255 } catch (RemoteException e) { 3256 mService.mController = null; 3257 Watchdog.getInstance().setActivityController(null); 3258 } 3259 if (!moveOK) { 3260 return false; 3261 } 3262 } 3263 } 3264 3265 if (DEBUG_TRANSITION) Slog.v(TAG, 3266 "Prepare to back transition: task=" + taskId); 3267 3268 mTaskHistory.remove(tr); 3269 mTaskHistory.add(0, tr); 3270 updateTaskMovement(tr, false); 3271 3272 // There is an assumption that moving a task to the back moves it behind the home activity. 3273 // We make sure here that some activity in the stack will launch home. 3274 int numTasks = mTaskHistory.size(); 3275 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3276 final TaskRecord task = mTaskHistory.get(taskNdx); 3277 if (task.mOnTopOfHome) { 3278 break; 3279 } 3280 if (taskNdx == 1) { 3281 // Set the last task before tr to go to home. 3282 task.mOnTopOfHome = true; 3283 } 3284 } 3285 3286 if (reason != null && 3287 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3288 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3289 ActivityRecord r = topRunningActivityLocked(null); 3290 if (r != null) { 3291 mNoAnimActivities.add(r); 3292 } 3293 } else { 3294 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3295 } 3296 mWindowManager.moveTaskToBottom(taskId); 3297 3298 if (VALIDATE_TOKENS) { 3299 validateAppTokensLocked(); 3300 } 3301 3302 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3303 if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) { 3304 tr.mOnTopOfHome = false; 3305 return mStackSupervisor.resumeHomeActivity(null); 3306 } 3307 3308 mStackSupervisor.resumeTopActivitiesLocked(); 3309 return true; 3310 } 3311 3312 static final void logStartActivity(int tag, ActivityRecord r, 3313 TaskRecord task) { 3314 final Uri data = r.intent.getData(); 3315 final String strData = data != null ? data.toSafeString() : null; 3316 3317 EventLog.writeEvent(tag, 3318 r.userId, System.identityHashCode(r), task.taskId, 3319 r.shortComponentName, r.intent.getAction(), 3320 r.intent.getType(), strData, r.intent.getFlags()); 3321 } 3322 3323 /** 3324 * Make sure the given activity matches the current configuration. Returns 3325 * false if the activity had to be destroyed. Returns true if the 3326 * configuration is the same, or the activity will remain running as-is 3327 * for whatever reason. Ensures the HistoryRecord is updated with the 3328 * correct configuration and all other bookkeeping is handled. 3329 */ 3330 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3331 int globalChanges) { 3332 if (mConfigWillChange) { 3333 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3334 "Skipping config check (will change): " + r); 3335 return true; 3336 } 3337 3338 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3339 "Ensuring correct configuration: " + r); 3340 3341 // Short circuit: if the two configurations are the exact same 3342 // object (the common case), then there is nothing to do. 3343 Configuration newConfig = mService.mConfiguration; 3344 if (r.configuration == newConfig && !r.forceNewConfig) { 3345 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3346 "Configuration unchanged in " + r); 3347 return true; 3348 } 3349 3350 // We don't worry about activities that are finishing. 3351 if (r.finishing) { 3352 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3353 "Configuration doesn't matter in finishing " + r); 3354 r.stopFreezingScreenLocked(false); 3355 return true; 3356 } 3357 3358 // Okay we now are going to make this activity have the new config. 3359 // But then we need to figure out how it needs to deal with that. 3360 Configuration oldConfig = r.configuration; 3361 r.configuration = newConfig; 3362 3363 // Determine what has changed. May be nothing, if this is a config 3364 // that has come back from the app after going idle. In that case 3365 // we just want to leave the official config object now in the 3366 // activity and do nothing else. 3367 final int changes = oldConfig.diff(newConfig); 3368 if (changes == 0 && !r.forceNewConfig) { 3369 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3370 "Configuration no differences in " + r); 3371 return true; 3372 } 3373 3374 // If the activity isn't currently running, just leave the new 3375 // configuration and it will pick that up next time it starts. 3376 if (r.app == null || r.app.thread == null) { 3377 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3378 "Configuration doesn't matter not running " + r); 3379 r.stopFreezingScreenLocked(false); 3380 r.forceNewConfig = false; 3381 return true; 3382 } 3383 3384 // Figure out how to handle the changes between the configurations. 3385 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3386 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3387 + Integer.toHexString(changes) + ", handles=0x" 3388 + Integer.toHexString(r.info.getRealConfigChanged()) 3389 + ", newConfig=" + newConfig); 3390 } 3391 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3392 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3393 r.configChangeFlags |= changes; 3394 r.startFreezingScreenLocked(r.app, globalChanges); 3395 r.forceNewConfig = false; 3396 if (r.app == null || r.app.thread == null) { 3397 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3398 "Config is destroying non-running " + r); 3399 destroyActivityLocked(r, true, false, "config"); 3400 } else if (r.state == ActivityState.PAUSING) { 3401 // A little annoying: we are waiting for this activity to 3402 // finish pausing. Let's not do anything now, but just 3403 // flag that it needs to be restarted when done pausing. 3404 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3405 "Config is skipping already pausing " + r); 3406 r.configDestroy = true; 3407 return true; 3408 } else if (r.state == ActivityState.RESUMED) { 3409 // Try to optimize this case: the configuration is changing 3410 // and we need to restart the top, resumed activity. 3411 // Instead of doing the normal handshaking, just say 3412 // "restart!". 3413 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3414 "Config is relaunching resumed " + r); 3415 relaunchActivityLocked(r, r.configChangeFlags, true); 3416 r.configChangeFlags = 0; 3417 } else { 3418 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3419 "Config is relaunching non-resumed " + r); 3420 relaunchActivityLocked(r, r.configChangeFlags, false); 3421 r.configChangeFlags = 0; 3422 } 3423 3424 // All done... tell the caller we weren't able to keep this 3425 // activity around. 3426 return false; 3427 } 3428 3429 // Default case: the activity can handle this new configuration, so 3430 // hand it over. Note that we don't need to give it the new 3431 // configuration, since we always send configuration changes to all 3432 // process when they happen so it can just use whatever configuration 3433 // it last got. 3434 if (r.app != null && r.app.thread != null) { 3435 try { 3436 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3437 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3438 } catch (RemoteException e) { 3439 // If process died, whatever. 3440 } 3441 } 3442 r.stopFreezingScreenLocked(false); 3443 3444 return true; 3445 } 3446 3447 private boolean relaunchActivityLocked(ActivityRecord r, 3448 int changes, boolean andResume) { 3449 List<ResultInfo> results = null; 3450 List<Intent> newIntents = null; 3451 if (andResume) { 3452 results = r.results; 3453 newIntents = r.newIntents; 3454 } 3455 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3456 + " with results=" + results + " newIntents=" + newIntents 3457 + " andResume=" + andResume); 3458 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3459 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3460 r.task.taskId, r.shortComponentName); 3461 3462 r.startFreezingScreenLocked(r.app, 0); 3463 3464 mStackSupervisor.removeChildActivityContainers(r); 3465 3466 try { 3467 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3468 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3469 + r); 3470 r.forceNewConfig = false; 3471 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3472 changes, !andResume, new Configuration(mService.mConfiguration)); 3473 // Note: don't need to call pauseIfSleepingLocked() here, because 3474 // the caller will only pass in 'andResume' if this activity is 3475 // currently resumed, which implies we aren't sleeping. 3476 } catch (RemoteException e) { 3477 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3478 } 3479 3480 if (andResume) { 3481 r.results = null; 3482 r.newIntents = null; 3483 r.state = ActivityState.RESUMED; 3484 } else { 3485 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3486 r.state = ActivityState.PAUSED; 3487 } 3488 3489 return true; 3490 } 3491 3492 boolean willActivityBeVisibleLocked(IBinder token) { 3493 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3494 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3495 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3496 final ActivityRecord r = activities.get(activityNdx); 3497 if (r.appToken == token) { 3498 return true; 3499 } 3500 if (r.fullscreen && !r.finishing) { 3501 return false; 3502 } 3503 } 3504 } 3505 final ActivityRecord r = ActivityRecord.forToken(token); 3506 if (r == null) { 3507 return false; 3508 } 3509 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3510 + " would have returned true for r=" + r); 3511 return !r.finishing; 3512 } 3513 3514 void closeSystemDialogsLocked() { 3515 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3516 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3517 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3518 final ActivityRecord r = activities.get(activityNdx); 3519 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3520 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3521 } 3522 } 3523 } 3524 } 3525 3526 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3527 boolean didSomething = false; 3528 TaskRecord lastTask = null; 3529 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3530 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3531 int numActivities = activities.size(); 3532 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3533 ActivityRecord r = activities.get(activityNdx); 3534 final boolean samePackage = r.packageName.equals(name) 3535 || (name == null && r.userId == userId); 3536 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3537 && (samePackage || r.task == lastTask) 3538 && (r.app == null || evenPersistent || !r.app.persistent)) { 3539 if (!doit) { 3540 if (r.finishing) { 3541 // If this activity is just finishing, then it is not 3542 // interesting as far as something to stop. 3543 continue; 3544 } 3545 return true; 3546 } 3547 didSomething = true; 3548 Slog.i(TAG, " Force finishing activity " + r); 3549 if (samePackage) { 3550 if (r.app != null) { 3551 r.app.removed = true; 3552 } 3553 r.app = null; 3554 } 3555 lastTask = r.task; 3556 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3557 true)) { 3558 // r has been deleted from mActivities, accommodate. 3559 --numActivities; 3560 --activityNdx; 3561 } 3562 } 3563 } 3564 } 3565 return didSomething; 3566 } 3567 3568 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3569 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3570 final TaskRecord task = mTaskHistory.get(taskNdx); 3571 ActivityRecord r = null; 3572 ActivityRecord top = null; 3573 int numActivities = 0; 3574 int numRunning = 0; 3575 final ArrayList<ActivityRecord> activities = task.mActivities; 3576 if (activities.isEmpty()) { 3577 continue; 3578 } 3579 if (!allowed && !task.isHomeTask() && task.creatorUid != callingUid) { 3580 continue; 3581 } 3582 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3583 r = activities.get(activityNdx); 3584 3585 // Initialize state for next task if needed. 3586 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3587 top = r; 3588 numActivities = numRunning = 0; 3589 } 3590 3591 // Add 'r' into the current task. 3592 numActivities++; 3593 if (r.app != null && r.app.thread != null) { 3594 numRunning++; 3595 } 3596 3597 if (localLOGV) Slog.v( 3598 TAG, r.intent.getComponent().flattenToShortString() 3599 + ": task=" + r.task); 3600 } 3601 3602 RunningTaskInfo ci = new RunningTaskInfo(); 3603 ci.id = task.taskId; 3604 ci.baseActivity = r.intent.getComponent(); 3605 ci.topActivity = top.intent.getComponent(); 3606 ci.lastActiveTime = task.lastActiveTime; 3607 3608 if (top.thumbHolder != null) { 3609 ci.description = top.thumbHolder.lastDescription; 3610 } 3611 ci.numActivities = numActivities; 3612 ci.numRunning = numRunning; 3613 //System.out.println( 3614 // "#" + maxNum + ": " + " descr=" + ci.description); 3615 list.add(ci); 3616 } 3617 } 3618 3619 public void unhandledBackLocked() { 3620 final int top = mTaskHistory.size() - 1; 3621 if (DEBUG_SWITCH) Slog.d( 3622 TAG, "Performing unhandledBack(): top activity at " + top); 3623 if (top >= 0) { 3624 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3625 int activityTop = activities.size() - 1; 3626 if (activityTop > 0) { 3627 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3628 "unhandled-back", true); 3629 } 3630 } 3631 } 3632 3633 /** 3634 * Reset local parameters because an app's activity died. 3635 * @param app The app of the activity that died. 3636 * @return result from removeHistoryRecordsForAppLocked. 3637 */ 3638 boolean handleAppDiedLocked(ProcessRecord app) { 3639 if (mPausingActivity != null && mPausingActivity.app == app) { 3640 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3641 "App died while pausing: " + mPausingActivity); 3642 mPausingActivity = null; 3643 } 3644 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3645 mLastPausedActivity = null; 3646 mLastNoHistoryActivity = null; 3647 } 3648 3649 return removeHistoryRecordsForAppLocked(app); 3650 } 3651 3652 void handleAppCrashLocked(ProcessRecord app) { 3653 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3654 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3655 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3656 final ActivityRecord r = activities.get(activityNdx); 3657 if (r.app == app) { 3658 Slog.w(TAG, " Force finishing activity " 3659 + r.intent.getComponent().flattenToShortString()); 3660 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3661 } 3662 } 3663 } 3664 } 3665 3666 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3667 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3668 boolean printed = false; 3669 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3670 final TaskRecord task = mTaskHistory.get(taskNdx); 3671 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3672 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3673 dumpClient, dumpPackage, needSep, header, 3674 " Task id #" + task.taskId); 3675 if (printed) { 3676 header = null; 3677 } 3678 } 3679 return printed; 3680 } 3681 3682 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3683 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3684 3685 if ("all".equals(name)) { 3686 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3687 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3688 } 3689 } else if ("top".equals(name)) { 3690 final int top = mTaskHistory.size() - 1; 3691 if (top >= 0) { 3692 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3693 int listTop = list.size() - 1; 3694 if (listTop >= 0) { 3695 activities.add(list.get(listTop)); 3696 } 3697 } 3698 } else { 3699 ItemMatcher matcher = new ItemMatcher(); 3700 matcher.build(name); 3701 3702 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3703 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3704 if (matcher.match(r1, r1.intent.getComponent())) { 3705 activities.add(r1); 3706 } 3707 } 3708 } 3709 } 3710 3711 return activities; 3712 } 3713 3714 ActivityRecord restartPackage(String packageName) { 3715 ActivityRecord starting = topRunningActivityLocked(null); 3716 3717 // All activities that came from the package must be 3718 // restarted as if there was a config change. 3719 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3720 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3721 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3722 final ActivityRecord a = activities.get(activityNdx); 3723 if (a.info.packageName.equals(packageName)) { 3724 a.forceNewConfig = true; 3725 if (starting != null && a == starting && a.visible) { 3726 a.startFreezingScreenLocked(starting.app, 3727 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3728 } 3729 } 3730 } 3731 } 3732 3733 return starting; 3734 } 3735 3736 void removeTask(TaskRecord task) { 3737 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3738 mWindowManager.removeTask(task.taskId); 3739 final ActivityRecord r = mResumedActivity; 3740 if (r != null && r.task == task) { 3741 mResumedActivity = null; 3742 } 3743 3744 final int taskNdx = mTaskHistory.indexOf(task); 3745 final int topTaskNdx = mTaskHistory.size() - 1; 3746 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3747 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3748 } 3749 mTaskHistory.remove(task); 3750 updateTaskMovement(task, true); 3751 3752 if (task.mActivities.isEmpty()) { 3753 final boolean isVoiceSession = task.voiceSession != null; 3754 if (isVoiceSession) { 3755 try { 3756 task.voiceSession.taskFinished(task.intent, task.taskId); 3757 } catch (RemoteException e) { 3758 } 3759 } 3760 if (task.autoRemoveFromRecents() || isVoiceSession) { 3761 // Task creator asked to remove this when done, or this task was a voice 3762 // interaction, so it should not remain on the recent tasks list. 3763 mService.mRecentTasks.remove(task); 3764 } 3765 } 3766 3767 if (mTaskHistory.isEmpty()) { 3768 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3769 if (isOnHomeDisplay()) { 3770 mStackSupervisor.moveHomeStack(!isHomeStack()); 3771 } 3772 if (mStacks != null) { 3773 mStacks.remove(this); 3774 mStacks.add(0, this); 3775 } 3776 } 3777 } 3778 3779 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 3780 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 3781 boolean toTop) { 3782 TaskRecord task = new TaskRecord(mService, taskId, info, intent, voiceSession, 3783 voiceInteractor); 3784 addTask(task, toTop, false); 3785 return task; 3786 } 3787 3788 ArrayList<TaskRecord> getAllTasks() { 3789 return new ArrayList<TaskRecord>(mTaskHistory); 3790 } 3791 3792 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 3793 task.stack = this; 3794 if (toTop) { 3795 insertTaskAtTop(task); 3796 } else { 3797 mTaskHistory.add(0, task); 3798 updateTaskMovement(task, false); 3799 } 3800 if (!moving && task.voiceSession != null) { 3801 try { 3802 task.voiceSession.taskStarted(task.intent, task.taskId); 3803 } catch (RemoteException e) { 3804 } 3805 } 3806 } 3807 3808 public int getStackId() { 3809 return mStackId; 3810 } 3811 3812 @Override 3813 public String toString() { 3814 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3815 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3816 } 3817} 3818