ActivityStack.java revision 376543bc5f1f8a4465f6f0f9c9b45f96f37b3d06
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_SCREENSHOTS; 37import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 38import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 39 40import android.service.voice.IVoiceInteractionSession; 41import com.android.internal.app.IVoiceInteractor; 42import com.android.internal.os.BatteryStatsImpl; 43import com.android.server.Watchdog; 44import com.android.server.am.ActivityManagerService.ItemMatcher; 45import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 46import com.android.server.wm.AppTransition; 47import com.android.server.wm.TaskGroup; 48import com.android.server.wm.WindowManagerService; 49 50import android.app.Activity; 51import android.app.ActivityManager; 52import android.app.ActivityOptions; 53import android.app.AppGlobals; 54import android.app.IActivityController; 55import android.app.ResultInfo; 56import android.app.ActivityManager.RunningTaskInfo; 57import android.content.ComponentName; 58import android.content.Intent; 59import android.content.pm.ActivityInfo; 60import android.content.pm.PackageManager; 61import android.content.res.Configuration; 62import android.content.res.Resources; 63import android.graphics.Bitmap; 64import android.net.Uri; 65import android.os.Binder; 66import android.os.Bundle; 67import android.os.Debug; 68import android.os.Handler; 69import android.os.IBinder; 70import android.os.Looper; 71import android.os.Message; 72import android.os.PersistableBundle; 73import android.os.RemoteException; 74import android.os.SystemClock; 75import android.os.Trace; 76import android.os.UserHandle; 77import android.util.EventLog; 78import android.util.Slog; 79import android.view.Display; 80 81import java.io.FileDescriptor; 82import java.io.PrintWriter; 83import java.lang.ref.WeakReference; 84import java.util.ArrayList; 85import java.util.Iterator; 86import java.util.List; 87import java.util.Objects; 88 89/** 90 * State and management of a single stack of activities. 91 */ 92final class ActivityStack { 93 94 // Ticks during which we check progress while waiting for an app to launch. 95 static final int LAUNCH_TICK = 500; 96 97 // How long we wait until giving up on the last activity to pause. This 98 // is short because it directly impacts the responsiveness of starting the 99 // next activity. 100 static final int PAUSE_TIMEOUT = 500; 101 102 // How long we wait for the activity to tell us it has stopped before 103 // giving up. This is a good amount of time because we really need this 104 // from the application in order to get its saved state. 105 static final int STOP_TIMEOUT = 10*1000; 106 107 // How long we wait until giving up on an activity telling us it has 108 // finished destroying itself. 109 static final int DESTROY_TIMEOUT = 10*1000; 110 111 // How long until we reset a task when the user returns to it. Currently 112 // disabled. 113 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 114 115 // How long between activity launches that we consider safe to not warn 116 // the user about an unexpected activity being launched on top. 117 static final long START_WARN_TIME = 5*1000; 118 119 // Set to false to disable the preview that is shown while a new activity 120 // is being started. 121 static final boolean SHOW_APP_STARTING_PREVIEW = true; 122 123 // How long to wait for all background Activities to redraw following a call to 124 // convertToTranslucent(). 125 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 126 127 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 128 129 enum ActivityState { 130 INITIALIZING, 131 RESUMED, 132 PAUSING, 133 PAUSED, 134 STOPPING, 135 STOPPED, 136 FINISHING, 137 DESTROYING, 138 DESTROYED 139 } 140 141 final ActivityManagerService mService; 142 final WindowManagerService mWindowManager; 143 144 /** 145 * The back history of all previous (and possibly still 146 * running) activities. It contains #TaskRecord objects. 147 */ 148 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 149 150 /** 151 * Used for validating app tokens with window manager. 152 */ 153 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 154 155 /** 156 * List of running activities, sorted by recent usage. 157 * The first entry in the list is the least recently used. 158 * It contains HistoryRecord objects. 159 */ 160 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 161 162 /** 163 * Animations that for the current transition have requested not to 164 * be considered for the transition animation. 165 */ 166 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 167 168 /** 169 * When we are in the process of pausing an activity, before starting the 170 * next one, this variable holds the activity that is currently being paused. 171 */ 172 ActivityRecord mPausingActivity = null; 173 174 /** 175 * This is the last activity that we put into the paused state. This is 176 * used to determine if we need to do an activity transition while sleeping, 177 * when we normally hold the top activity paused. 178 */ 179 ActivityRecord mLastPausedActivity = null; 180 181 /** 182 * Activities that specify No History must be removed once the user navigates away from them. 183 * If the device goes to sleep with such an activity in the paused state then we save it here 184 * and finish it later if another activity replaces it on wakeup. 185 */ 186 ActivityRecord mLastNoHistoryActivity = null; 187 188 /** 189 * Current activity that is resumed, or null if there is none. 190 */ 191 ActivityRecord mResumedActivity = null; 192 193 /** 194 * This is the last activity that has been started. It is only used to 195 * identify when multiple activities are started at once so that the user 196 * can be warned they may not be in the activity they think they are. 197 */ 198 ActivityRecord mLastStartedActivity = null; 199 200 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 201 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 202 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 203 // Activity in mTranslucentActivityWaiting is notified via 204 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 205 // background activity being drawn then the same call will be made with a true value. 206 ActivityRecord mTranslucentActivityWaiting = null; 207 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 208 new ArrayList<ActivityRecord>(); 209 // Options passed from the caller of the convertToTranslucent to the activity that will 210 // appear below it. 211 ActivityOptions mReturningActivityOptions = null; 212 213 /** 214 * Set when we know we are going to be calling updateConfiguration() 215 * soon, so want to skip intermediate config checks. 216 */ 217 boolean mConfigWillChange; 218 219 long mLaunchStartTime = 0; 220 long mFullyDrawnStartTime = 0; 221 222 /** 223 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 224 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 225 */ 226 private ActivityRecord mLastScreenshotActivity = null; 227 private Bitmap mLastScreenshotBitmap = null; 228 229 int mThumbnailWidth = -1; 230 int mThumbnailHeight = -1; 231 232 int mCurrentUser; 233 234 final int mStackId; 235 final ActivityContainer mActivityContainer; 236 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 237 ArrayList<ActivityStack> mStacks; 238 /** The attached Display's unique identifier, or -1 if detached */ 239 int mDisplayId; 240 241 /** Run all ActivityStacks through this */ 242 final ActivityStackSupervisor mStackSupervisor; 243 244 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 245 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 246 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 247 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 248 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 249 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 250 251 static class ScheduleDestroyArgs { 252 final ProcessRecord mOwner; 253 final boolean mOomAdj; 254 final String mReason; 255 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 256 mOwner = owner; 257 mOomAdj = oomAdj; 258 mReason = reason; 259 } 260 } 261 262 final Handler mHandler; 263 264 final class ActivityStackHandler extends Handler { 265 //public Handler() { 266 // if (localLOGV) Slog.v(TAG, "Handler started!"); 267 //} 268 ActivityStackHandler(Looper looper) { 269 super(looper); 270 } 271 272 @Override 273 public void handleMessage(Message msg) { 274 switch (msg.what) { 275 case PAUSE_TIMEOUT_MSG: { 276 ActivityRecord r = (ActivityRecord)msg.obj; 277 // We don't at this point know if the activity is fullscreen, 278 // so we need to be conservative and assume it isn't. 279 Slog.w(TAG, "Activity pause timeout for " + r); 280 synchronized (mService) { 281 if (r.app != null) { 282 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 283 } 284 activityPausedLocked(r.appToken, true, r.persistentState); 285 } 286 } break; 287 case LAUNCH_TICK_MSG: { 288 ActivityRecord r = (ActivityRecord)msg.obj; 289 synchronized (mService) { 290 if (r.continueLaunchTickingLocked()) { 291 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 292 } 293 } 294 } break; 295 case DESTROY_TIMEOUT_MSG: { 296 ActivityRecord r = (ActivityRecord)msg.obj; 297 // We don't at this point know if the activity is fullscreen, 298 // so we need to be conservative and assume it isn't. 299 Slog.w(TAG, "Activity destroy timeout for " + r); 300 synchronized (mService) { 301 activityDestroyedLocked(r != null ? r.appToken : null); 302 } 303 } break; 304 case STOP_TIMEOUT_MSG: { 305 ActivityRecord r = (ActivityRecord)msg.obj; 306 // We don't at this point know if the activity is fullscreen, 307 // so we need to be conservative and assume it isn't. 308 Slog.w(TAG, "Activity stop timeout for " + r); 309 synchronized (mService) { 310 if (r.isInHistory()) { 311 activityStoppedLocked(r, null, null, null); 312 } 313 } 314 } break; 315 case DESTROY_ACTIVITIES_MSG: { 316 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 317 synchronized (mService) { 318 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 319 } 320 } break; 321 case TRANSLUCENT_TIMEOUT_MSG: { 322 synchronized (mService) { 323 notifyActivityDrawnLocked(null); 324 } 325 } break; 326 } 327 } 328 } 329 330 int numActivities() { 331 int count = 0; 332 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 333 count += mTaskHistory.get(taskNdx).mActivities.size(); 334 } 335 return count; 336 } 337 338 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 339 mActivityContainer = activityContainer; 340 mStackSupervisor = activityContainer.getOuter(); 341 mService = mStackSupervisor.mService; 342 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 343 mWindowManager = mService.mWindowManager; 344 mStackId = activityContainer.mStackId; 345 mCurrentUser = mService.mCurrentUserId; 346 // Get the activity screenshot thumbnail dimensions 347 Resources res = mService.mContext.getResources(); 348 mThumbnailWidth = 349 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_width); 350 mThumbnailHeight = 351 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_height); 352 } 353 354 /** 355 * Checks whether the userid is a profile of the current user. 356 */ 357 private boolean isCurrentProfileLocked(int userId) { 358 if (userId == mCurrentUser) return true; 359 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 360 if (mService.mCurrentProfileIds[i] == userId) return true; 361 } 362 return false; 363 } 364 365 boolean okToShowLocked(ActivityRecord r) { 366 return isCurrentProfileLocked(r.userId) 367 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 368 } 369 370 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 371 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 372 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 373 if (r != null) { 374 return r; 375 } 376 } 377 return null; 378 } 379 380 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 381 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 382 final TaskRecord task = mTaskHistory.get(taskNdx); 383 final ArrayList<ActivityRecord> activities = task.mActivities; 384 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 385 ActivityRecord r = activities.get(activityNdx); 386 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 387 return r; 388 } 389 } 390 } 391 return null; 392 } 393 394 /** 395 * This is a simplified version of topRunningActivityLocked that provides a number of 396 * optional skip-over modes. It is intended for use with the ActivityController hook only. 397 * 398 * @param token If non-null, any history records matching this token will be skipped. 399 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 400 * 401 * @return Returns the HistoryRecord of the next activity on the stack. 402 */ 403 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 404 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 405 TaskRecord task = mTaskHistory.get(taskNdx); 406 if (task.taskId == taskId) { 407 continue; 408 } 409 ArrayList<ActivityRecord> activities = task.mActivities; 410 for (int i = activities.size() - 1; i >= 0; --i) { 411 final ActivityRecord r = activities.get(i); 412 // Note: the taskId check depends on real taskId fields being non-zero 413 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 414 return r; 415 } 416 } 417 } 418 return null; 419 } 420 421 final ActivityRecord topActivity() { 422 // Iterate to find the first non-empty task stack. Note that this code can 423 // be simplified once we stop storing tasks with empty mActivities lists. 424 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 425 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 426 final int topActivityNdx = activities.size() - 1; 427 if (topActivityNdx >= 0) { 428 return activities.get(topActivityNdx); 429 } 430 } 431 return null; 432 } 433 434 final TaskRecord topTask() { 435 final int size = mTaskHistory.size(); 436 if (size > 0) { 437 return mTaskHistory.get(size - 1); 438 } 439 return null; 440 } 441 442 TaskRecord taskForIdLocked(int id) { 443 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 444 final TaskRecord task = mTaskHistory.get(taskNdx); 445 if (task.taskId == id) { 446 return task; 447 } 448 } 449 return null; 450 } 451 452 ActivityRecord isInStackLocked(IBinder token) { 453 final ActivityRecord r = ActivityRecord.forToken(token); 454 if (r != null) { 455 final TaskRecord task = r.task; 456 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 457 if (task.stack != this) Slog.w(TAG, 458 "Illegal state! task does not point to stack it is in."); 459 return r; 460 } 461 } 462 return null; 463 } 464 465 final boolean updateLRUListLocked(ActivityRecord r) { 466 final boolean hadit = mLRUActivities.remove(r); 467 mLRUActivities.add(r); 468 return hadit; 469 } 470 471 final boolean isHomeStack() { 472 return mStackId == HOME_STACK_ID; 473 } 474 475 final boolean isOnHomeDisplay() { 476 return isAttached() && 477 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 478 } 479 480 final void moveToFront() { 481 if (isAttached()) { 482 if (isOnHomeDisplay()) { 483 mStackSupervisor.moveHomeStack(isHomeStack()); 484 } 485 mStacks.remove(this); 486 mStacks.add(this); 487 } 488 } 489 490 final boolean isAttached() { 491 return mStacks != null; 492 } 493 494 /** 495 * Returns the top activity in any existing task matching the given 496 * Intent. Returns null if no such task is found. 497 */ 498 ActivityRecord findTaskLocked(ActivityRecord target) { 499 Intent intent = target.intent; 500 ActivityInfo info = target.info; 501 ComponentName cls = intent.getComponent(); 502 if (info.targetActivity != null) { 503 cls = new ComponentName(info.packageName, info.targetActivity); 504 } 505 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 506 boolean isDocument = intent != null & intent.isDocument(); 507 // If documentData is non-null then it must match the existing task data. 508 Uri documentData = isDocument ? intent.getData() : null; 509 510 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 511 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 512 final TaskRecord task = mTaskHistory.get(taskNdx); 513 if (task.voiceSession != null) { 514 // We never match voice sessions; those always run independently. 515 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 516 continue; 517 } 518 if (task.userId != userId) { 519 // Looking for a different task. 520 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 521 continue; 522 } 523 final ActivityRecord r = task.getTopActivity(); 524 if (r == null || r.finishing || r.userId != userId || 525 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 526 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 527 continue; 528 } 529 530 final Intent taskIntent = task.intent; 531 final Intent affinityIntent = task.affinityIntent; 532 final boolean taskIsDocument; 533 final Uri taskDocumentData; 534 if (taskIntent != null && taskIntent.isDocument()) { 535 taskIsDocument = true; 536 taskDocumentData = taskIntent.getData(); 537 } else if (affinityIntent != null && affinityIntent.isDocument()) { 538 taskIsDocument = true; 539 taskDocumentData = affinityIntent.getData(); 540 } else { 541 taskIsDocument = false; 542 taskDocumentData = null; 543 } 544 545 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 546 + taskIntent.getComponent().flattenToShortString() 547 + "/aff=" + r.task.affinity + " to new cls=" 548 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 549 if (!isDocument && !taskIsDocument && task.affinity != null) { 550 if (task.affinity.equals(target.taskAffinity)) { 551 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 552 return r; 553 } 554 } else if (taskIntent != null && taskIntent.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 (affinityIntent != null && affinityIntent.getComponent().equals(cls) && 562 Objects.equals(documentData, taskDocumentData)) { 563 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 564 //dump(); 565 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 566 + r.intent); 567 return r; 568 } else if (DEBUG_TASKS) { 569 Slog.d(TAG, "Not a match: " + task); 570 } 571 } 572 573 return null; 574 } 575 576 /** 577 * Returns the first activity (starting from the top of the stack) that 578 * is the same as the given activity. Returns null if no such activity 579 * is found. 580 */ 581 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 582 ComponentName cls = intent.getComponent(); 583 if (info.targetActivity != null) { 584 cls = new ComponentName(info.packageName, info.targetActivity); 585 } 586 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 587 588 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 589 TaskRecord task = mTaskHistory.get(taskNdx); 590 if (!isCurrentProfileLocked(task.userId)) { 591 return null; 592 } 593 final ArrayList<ActivityRecord> activities = task.mActivities; 594 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 595 ActivityRecord r = activities.get(activityNdx); 596 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 597 //Slog.i(TAG, "Found matching class!"); 598 //dump(); 599 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 600 return r; 601 } 602 } 603 } 604 605 return null; 606 } 607 608 /* 609 * Move the activities around in the stack to bring a user to the foreground. 610 */ 611 final void switchUserLocked(int userId) { 612 if (mCurrentUser == userId) { 613 return; 614 } 615 mCurrentUser = userId; 616 617 // Move userId's tasks to the top. 618 int index = mTaskHistory.size(); 619 for (int i = 0; i < index; ) { 620 TaskRecord task = mTaskHistory.get(i); 621 if (isCurrentProfileLocked(task.userId)) { 622 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 623 " moving " + task + " to top"); 624 mTaskHistory.remove(i); 625 mTaskHistory.add(task); 626 --index; 627 // Use same value for i. 628 } else { 629 ++i; 630 } 631 } 632 if (VALIDATE_TOKENS) { 633 validateAppTokensLocked(); 634 } 635 } 636 637 void minimalResumeActivityLocked(ActivityRecord r) { 638 r.state = ActivityState.RESUMED; 639 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 640 + " (starting new instance)"); 641 r.stopped = false; 642 mResumedActivity = r; 643 r.task.touchActiveTime(); 644 mService.addRecentTaskLocked(r.task); 645 completeResumeLocked(r); 646 mStackSupervisor.checkReadyForSleepLocked(); 647 setLaunchTime(r); 648 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 649 } 650 651 private void startLaunchTraces() { 652 if (mFullyDrawnStartTime != 0) { 653 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 654 } 655 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 656 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 657 } 658 659 private void stopFullyDrawnTraceIfNeeded() { 660 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 661 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 662 mFullyDrawnStartTime = 0; 663 } 664 } 665 666 void setLaunchTime(ActivityRecord r) { 667 if (r.displayStartTime == 0) { 668 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 669 if (mLaunchStartTime == 0) { 670 startLaunchTraces(); 671 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 672 } 673 } else if (mLaunchStartTime == 0) { 674 startLaunchTraces(); 675 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 676 } 677 } 678 679 void clearLaunchTime(ActivityRecord r) { 680 // Make sure that there is no activity waiting for this to launch. 681 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 682 r.displayStartTime = r.fullyDrawnStartTime = 0; 683 } else { 684 mStackSupervisor.removeTimeoutsForActivityLocked(r); 685 mStackSupervisor.scheduleIdleTimeoutLocked(r); 686 } 687 } 688 689 void awakeFromSleepingLocked() { 690 // Ensure activities are no longer sleeping. 691 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 692 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 693 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 694 activities.get(activityNdx).setSleeping(false); 695 } 696 } 697 } 698 699 /** 700 * @return true if something must be done before going to sleep. 701 */ 702 boolean checkReadyForSleepLocked() { 703 if (mResumedActivity != null) { 704 // Still have something resumed; can't sleep until it is paused. 705 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 706 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 707 startPausingLocked(false, true); 708 return true; 709 } 710 if (mPausingActivity != null) { 711 // Still waiting for something to pause; can't sleep yet. 712 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 713 return true; 714 } 715 716 return false; 717 } 718 719 void goToSleep() { 720 ensureActivitiesVisibleLocked(null, 0); 721 722 // Make sure any stopped but visible activities are now sleeping. 723 // This ensures that the activity's onStop() is called. 724 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 725 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 726 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 727 final ActivityRecord r = activities.get(activityNdx); 728 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 729 r.setSleeping(true); 730 } 731 } 732 } 733 } 734 735 /** 736 * This resets the saved state from the last screenshot, forcing a new screenshot to be taken 737 * again when requested. 738 */ 739 private void invalidateLastScreenshot() { 740 mLastScreenshotActivity = null; 741 if (mLastScreenshotBitmap != null) { 742 mLastScreenshotBitmap.recycle(); 743 } 744 mLastScreenshotBitmap = null; 745 } 746 747 public final Bitmap screenshotActivities(ActivityRecord who) { 748 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "screenshotActivities: " + who); 749 if (who.noDisplay) { 750 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tNo display"); 751 return null; 752 } 753 754 TaskRecord tr = who.task; 755 if (mService.getMostRecentTask() != tr || isHomeStack()) { 756 // This is an optimization -- since we never show Home or Recents within Recents itself, 757 // we can just go ahead and skip taking the screenshot if this is the home stack. In 758 // the case where the most recent task is not the task that was supplied, then the stack 759 // has changed, so invalidate the last screenshot(). 760 invalidateLastScreenshot(); 761 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tIs Home stack? " + isHomeStack()); 762 return null; 763 } 764 765 int w = mThumbnailWidth; 766 int h = mThumbnailHeight; 767 if (w > 0) { 768 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 769 || mLastScreenshotActivity.state == ActivityState.RESUMED 770 || mLastScreenshotBitmap.getWidth() != w 771 || mLastScreenshotBitmap.getHeight() != h) { 772 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tUpdating screenshot"); 773 mLastScreenshotActivity = who; 774 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 775 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 776 } 777 if (mLastScreenshotBitmap != null) { 778 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tReusing last screenshot"); 779 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 780 } 781 } 782 Slog.e(TAG, "Invalid thumbnail dimensions: " + w + "x" + h); 783 return null; 784 } 785 786 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 787 if (mPausingActivity != null) { 788 Slog.e(TAG, "Trying to pause when pause is already pending for " 789 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 790 } 791 ActivityRecord prev = mResumedActivity; 792 if (prev == null) { 793 Slog.e(TAG, "Trying to pause when nothing is resumed", 794 new RuntimeException("here").fillInStackTrace()); 795 mStackSupervisor.resumeTopActivitiesLocked(); 796 return; 797 } 798 799 if (mActivityContainer.mParentActivity == null) { 800 // Top level stack, not a child. Look for child stacks. 801 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 802 } 803 804 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 805 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 806 mResumedActivity = null; 807 mPausingActivity = prev; 808 mLastPausedActivity = prev; 809 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 810 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 811 prev.state = ActivityState.PAUSING; 812 prev.task.touchActiveTime(); 813 clearLaunchTime(prev); 814 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 815 if (next == null || next.noDisplay || next.task != prev.task) { 816 prev.updateThumbnail(screenshotActivities(prev), null); 817 } 818 stopFullyDrawnTraceIfNeeded(); 819 820 mService.updateCpuStats(); 821 822 if (prev.app != null && prev.app.thread != null) { 823 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 824 try { 825 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 826 prev.userId, System.identityHashCode(prev), 827 prev.shortComponentName); 828 mService.updateUsageStats(prev, false); 829 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 830 userLeaving, prev.configChangeFlags); 831 } catch (Exception e) { 832 // Ignore exception, if process died other code will cleanup. 833 Slog.w(TAG, "Exception thrown during pause", e); 834 mPausingActivity = null; 835 mLastPausedActivity = null; 836 mLastNoHistoryActivity = null; 837 } 838 } else { 839 mPausingActivity = null; 840 mLastPausedActivity = null; 841 mLastNoHistoryActivity = null; 842 } 843 844 // If we are not going to sleep, we want to ensure the device is 845 // awake until the next activity is started. 846 if (!mService.isSleepingOrShuttingDown()) { 847 mStackSupervisor.acquireLaunchWakelock(); 848 } 849 850 if (mPausingActivity != null) { 851 // Have the window manager pause its key dispatching until the new 852 // activity has started. If we're pausing the activity just because 853 // the screen is being turned off and the UI is sleeping, don't interrupt 854 // key dispatch; the same activity will pick it up again on wakeup. 855 if (!uiSleeping) { 856 prev.pauseKeyDispatchingLocked(); 857 } else { 858 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 859 } 860 861 // Schedule a pause timeout in case the app doesn't respond. 862 // We don't give it much time because this directly impacts the 863 // responsiveness seen by the user. 864 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 865 msg.obj = prev; 866 prev.pauseTime = SystemClock.uptimeMillis(); 867 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 868 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 869 } else { 870 // This activity failed to schedule the 871 // pause, so just treat it as being paused now. 872 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 873 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 874 } 875 } 876 877 final void activityPausedLocked(IBinder token, boolean timeout, 878 PersistableBundle persistentState) { 879 if (DEBUG_PAUSE) Slog.v( 880 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 881 882 final ActivityRecord r = isInStackLocked(token); 883 if (r != null) { 884 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 885 r.persistentState = persistentState; 886 if (mPausingActivity == r) { 887 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 888 + (timeout ? " (due to timeout)" : " (pause complete)")); 889 r.state = ActivityState.PAUSED; 890 completePauseLocked(); 891 } else { 892 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 893 r.userId, System.identityHashCode(r), r.shortComponentName, 894 mPausingActivity != null 895 ? mPausingActivity.shortComponentName : "(none)"); 896 } 897 } 898 } 899 900 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, 901 PersistableBundle persistentState, CharSequence description) { 902 if (r.state != ActivityState.STOPPING) { 903 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 904 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 905 return; 906 } 907 r.persistentState = persistentState; 908 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 909 if (icicle != null) { 910 // If icicle is null, this is happening due to a timeout, so we 911 // haven't really saved the state. 912 r.icicle = icicle; 913 r.haveState = true; 914 r.launchCount = 0; 915 r.updateThumbnail(null, description); 916 } 917 if (!r.stopped) { 918 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 919 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 920 r.stopped = true; 921 r.state = ActivityState.STOPPED; 922 if (r.finishing) { 923 r.clearOptionsLocked(); 924 } else { 925 if (r.configDestroy) { 926 destroyActivityLocked(r, true, false, "stop-config"); 927 mStackSupervisor.resumeTopActivitiesLocked(); 928 } else { 929 mStackSupervisor.updatePreviousProcessLocked(r); 930 } 931 } 932 } 933 } 934 935 private void completePauseLocked() { 936 ActivityRecord prev = mPausingActivity; 937 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 938 939 if (prev != null) { 940 if (prev.finishing) { 941 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 942 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 943 } else if (prev.app != null) { 944 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 945 if (prev.waitingVisible) { 946 prev.waitingVisible = false; 947 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 948 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 949 TAG, "Complete pause, no longer waiting: " + prev); 950 } 951 if (prev.configDestroy) { 952 // The previous is being paused because the configuration 953 // is changing, which means it is actually stopping... 954 // To juggle the fact that we are also starting a new 955 // instance right now, we need to first completely stop 956 // the current instance before starting the new one. 957 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 958 destroyActivityLocked(prev, true, false, "pause-config"); 959 } else { 960 mStackSupervisor.mStoppingActivities.add(prev); 961 if (mStackSupervisor.mStoppingActivities.size() > 3 || 962 prev.frontOfTask && mTaskHistory.size() <= 1) { 963 // If we already have a few activities waiting to stop, 964 // then give up on things going idle and start clearing 965 // them out. Or if r is the last of activity of the last task the stack 966 // will be empty and must be cleared immediately. 967 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 968 mStackSupervisor.scheduleIdleLocked(); 969 } else { 970 mStackSupervisor.checkReadyForSleepLocked(); 971 } 972 } 973 } else { 974 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 975 prev = null; 976 } 977 mPausingActivity = null; 978 } 979 980 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 981 if (!mService.isSleepingOrShuttingDown()) { 982 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 983 } else { 984 mStackSupervisor.checkReadyForSleepLocked(); 985 ActivityRecord top = topStack.topRunningActivityLocked(null); 986 if (top == null || (prev != null && top != prev)) { 987 // If there are no more activities available to run, 988 // do resume anyway to start something. Also if the top 989 // activity on the stack is not the just paused activity, 990 // we need to go ahead and resume it to ensure we complete 991 // an in-flight app switch. 992 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 993 } 994 } 995 996 if (prev != null) { 997 prev.resumeKeyDispatchingLocked(); 998 999 if (prev.app != null && prev.cpuTimeAtResume > 0 1000 && mService.mBatteryStatsService.isOnBattery()) { 1001 long diff; 1002 synchronized (mService.mProcessCpuThread) { 1003 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 1004 - prev.cpuTimeAtResume; 1005 } 1006 if (diff > 0) { 1007 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 1008 synchronized (bsi) { 1009 BatteryStatsImpl.Uid.Proc ps = 1010 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 1011 prev.info.packageName); 1012 if (ps != null) { 1013 ps.addForegroundTimeLocked(diff); 1014 } 1015 } 1016 } 1017 } 1018 prev.cpuTimeAtResume = 0; // reset it 1019 } 1020 } 1021 1022 /** 1023 * Once we know that we have asked an application to put an activity in 1024 * the resumed state (either by launching it or explicitly telling it), 1025 * this function updates the rest of our state to match that fact. 1026 */ 1027 private void completeResumeLocked(ActivityRecord next) { 1028 next.idle = false; 1029 next.results = null; 1030 next.newIntents = null; 1031 if (next.nowVisible) { 1032 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1033 mStackSupervisor.dismissKeyguard(); 1034 } 1035 1036 // schedule an idle timeout in case the app doesn't do it for us. 1037 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1038 1039 mStackSupervisor.reportResumedActivityLocked(next); 1040 1041 next.resumeKeyDispatchingLocked(); 1042 mNoAnimActivities.clear(); 1043 1044 // Mark the point when the activity is resuming 1045 // TODO: To be more accurate, the mark should be before the onCreate, 1046 // not after the onResume. But for subsequent starts, onResume is fine. 1047 if (next.app != null) { 1048 synchronized (mService.mProcessCpuThread) { 1049 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1050 } 1051 } else { 1052 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1053 } 1054 1055 // If we are resuming the activity that we had last screenshotted, then we know it will be 1056 // updated, so invalidate the last screenshot to ensure we take a fresh one when requested 1057 if (next == mLastScreenshotActivity) { 1058 invalidateLastScreenshot(); 1059 } 1060 } 1061 1062 /** 1063 * Determine if home should be visible below the passed record. 1064 * @param record activity we are querying for. 1065 * @return true if home is visible below the passed activity, false otherwise. 1066 */ 1067 boolean isActivityOverHome(ActivityRecord record) { 1068 // Start at record and go down, look for either home or a visible fullscreen activity. 1069 final TaskRecord recordTask = record.task; 1070 for (int taskNdx = mTaskHistory.indexOf(recordTask); taskNdx >= 0; --taskNdx) { 1071 TaskRecord task = mTaskHistory.get(taskNdx); 1072 final ArrayList<ActivityRecord> activities = task.mActivities; 1073 final int startNdx = 1074 task == recordTask ? activities.indexOf(record) : activities.size() - 1; 1075 for (int activityNdx = startNdx; activityNdx >= 0; --activityNdx) { 1076 final ActivityRecord r = activities.get(activityNdx); 1077 if (r.isHomeActivity()) { 1078 return true; 1079 } 1080 if (!r.finishing && r.fullscreen) { 1081 // Passed activity is over a fullscreen activity. 1082 return false; 1083 } 1084 } 1085 if (task.mOnTopOfHome) { 1086 // Got to the bottom of a task on top of home without finding a visible fullscreen 1087 // activity. Home is visible. 1088 return true; 1089 } 1090 } 1091 // Got to the bottom of this stack and still don't know. If this is over the home stack 1092 // then record is over home. May not work if we ever get more than two layers. 1093 return mStackSupervisor.isFrontStack(this); 1094 } 1095 1096 private void setVisibile(ActivityRecord r, boolean visible) { 1097 r.visible = visible; 1098 mWindowManager.setAppVisibility(r.appToken, visible); 1099 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1100 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1101 ActivityContainer container = containers.get(containerNdx); 1102 container.setVisible(visible); 1103 } 1104 } 1105 1106 // Checks if any of the stacks above this one has a fullscreen activity behind it. 1107 // If so, this stack is hidden, otherwise it is visible. 1108 private boolean isStackVisible() { 1109 if (!isAttached()) { 1110 return false; 1111 } 1112 1113 if (mStackSupervisor.isFrontStack(this)) { 1114 return true; 1115 } 1116 1117 /** 1118 * Start at the task above this one and go up, looking for a visible 1119 * fullscreen activity, or a translucent activity that requested the 1120 * wallpaper to be shown behind it. 1121 */ 1122 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) { 1123 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks(); 1124 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) { 1125 final ArrayList<ActivityRecord> activities = tasks.get(taskNdx).mActivities; 1126 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) { 1127 final ActivityRecord r = activities.get(activityNdx); 1128 1129 // Conditions for an activity to obscure the stack we're 1130 // examining: 1131 // 1. Not Finishing AND Visible AND: 1132 // 2. Either: 1133 // - Full Screen Activity OR 1134 // - On top of Home and our stack is NOT home 1135 if (!r.finishing && r.visible && (r.fullscreen || 1136 (!isHomeStack() && r.frontOfTask && tasks.get(taskNdx).mOnTopOfHome))) { 1137 return false; 1138 } 1139 } 1140 } 1141 } 1142 1143 return true; 1144 } 1145 1146 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1147 ActivityRecord r = topRunningActivityLocked(null); 1148 if (r != null) { 1149 ensureActivitiesVisibleLocked(r, starting, null, configChanges); 1150 } 1151 } 1152 1153 /** 1154 * Make sure that all activities that need to be visible (that is, they 1155 * currently can be seen by the user) actually are. 1156 */ 1157 final void ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1158 String onlyThisProcess, int configChanges) { 1159 if (DEBUG_VISBILITY) Slog.v( 1160 TAG, "ensureActivitiesVisible behind " + top 1161 + " configChanges=0x" + Integer.toHexString(configChanges)); 1162 1163 if (mTranslucentActivityWaiting != top) { 1164 mUndrawnActivitiesBelowTopTranslucent.clear(); 1165 if (mTranslucentActivityWaiting != null) { 1166 // Call the callback with a timeout indication. 1167 notifyActivityDrawnLocked(null); 1168 mTranslucentActivityWaiting = null; 1169 } 1170 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1171 } 1172 1173 // If the top activity is not fullscreen, then we need to 1174 // make sure any activities under it are now visible. 1175 boolean aboveTop = true; 1176 boolean behindFullscreen = !isStackVisible(); 1177 1178 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1179 final TaskRecord task = mTaskHistory.get(taskNdx); 1180 final ArrayList<ActivityRecord> activities = task.mActivities; 1181 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1182 final ActivityRecord r = activities.get(activityNdx); 1183 if (r.finishing) { 1184 continue; 1185 } 1186 if (aboveTop && r != top) { 1187 continue; 1188 } 1189 aboveTop = false; 1190 if (!behindFullscreen) { 1191 if (DEBUG_VISBILITY) Slog.v( 1192 TAG, "Make visible? " + r + " finishing=" + r.finishing 1193 + " state=" + r.state); 1194 1195 final boolean doThisProcess = onlyThisProcess == null 1196 || onlyThisProcess.equals(r.processName); 1197 1198 // First: if this is not the current activity being started, make 1199 // sure it matches the current configuration. 1200 if (r != starting && doThisProcess) { 1201 ensureActivityConfigurationLocked(r, 0); 1202 } 1203 1204 if (r.app == null || r.app.thread == null) { 1205 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1206 // This activity needs to be visible, but isn't even 1207 // running... get it started, but don't resume it 1208 // at this point. 1209 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1210 if (r != starting) { 1211 r.startFreezingScreenLocked(r.app, configChanges); 1212 } 1213 if (!r.visible) { 1214 if (DEBUG_VISBILITY) Slog.v( 1215 TAG, "Starting and making visible: " + r); 1216 setVisibile(r, true); 1217 } 1218 if (r != starting) { 1219 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1220 } 1221 } 1222 1223 } else if (r.visible) { 1224 // If this activity is already visible, then there is nothing 1225 // else to do here. 1226 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1227 r.stopFreezingScreenLocked(false); 1228 1229 } else if (onlyThisProcess == null) { 1230 // This activity is not currently visible, but is running. 1231 // Tell it to become visible. 1232 r.visible = true; 1233 if (r.state != ActivityState.RESUMED && r != starting) { 1234 // If this activity is paused, tell it 1235 // to now show its window. 1236 if (DEBUG_VISBILITY) Slog.v( 1237 TAG, "Making visible and scheduling visibility: " + r); 1238 try { 1239 if (mTranslucentActivityWaiting != null) { 1240 r.updateOptionsLocked(mReturningActivityOptions); 1241 mUndrawnActivitiesBelowTopTranslucent.add(r); 1242 } 1243 setVisibile(r, true); 1244 r.sleeping = false; 1245 r.app.pendingUiClean = true; 1246 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1247 r.stopFreezingScreenLocked(false); 1248 } catch (Exception e) { 1249 // Just skip on any failure; we'll make it 1250 // visible when it next restarts. 1251 Slog.w(TAG, "Exception thrown making visibile: " 1252 + r.intent.getComponent(), e); 1253 } 1254 } 1255 } 1256 1257 // Aggregate current change flags. 1258 configChanges |= r.configChangeFlags; 1259 1260 if (r.fullscreen) { 1261 // At this point, nothing else needs to be shown 1262 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1263 behindFullscreen = true; 1264 } else if (!isHomeStack() && r.frontOfTask && task.mOnTopOfHome) { 1265 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1266 behindFullscreen = true; 1267 } 1268 } else { 1269 if (DEBUG_VISBILITY) Slog.v( 1270 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1271 + " state=" + r.state 1272 + " behindFullscreen=" + behindFullscreen); 1273 // Now for any activities that aren't visible to the user, make 1274 // sure they no longer are keeping the screen frozen. 1275 if (r.visible) { 1276 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1277 try { 1278 setVisibile(r, false); 1279 switch (r.state) { 1280 case STOPPING: 1281 case STOPPED: 1282 if (r.app != null && r.app.thread != null) { 1283 if (DEBUG_VISBILITY) Slog.v( 1284 TAG, "Scheduling invisibility: " + r); 1285 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1286 } 1287 break; 1288 1289 case INITIALIZING: 1290 case RESUMED: 1291 case PAUSING: 1292 case PAUSED: 1293 // This case created for transitioning activities from 1294 // translucent to opaque {@link Activity#convertToOpaque}. 1295 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1296 mStackSupervisor.mStoppingActivities.add(r); 1297 } 1298 mStackSupervisor.scheduleIdleLocked(); 1299 break; 1300 1301 default: 1302 break; 1303 } 1304 } catch (Exception e) { 1305 // Just skip on any failure; we'll make it 1306 // visible when it next restarts. 1307 Slog.w(TAG, "Exception thrown making hidden: " 1308 + r.intent.getComponent(), e); 1309 } 1310 } else { 1311 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1312 } 1313 } 1314 } 1315 } 1316 } 1317 1318 void convertToTranslucent(ActivityRecord r, ActivityOptions options) { 1319 mTranslucentActivityWaiting = r; 1320 mUndrawnActivitiesBelowTopTranslucent.clear(); 1321 mReturningActivityOptions = options; 1322 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1323 } 1324 1325 /** 1326 * Called as activities below the top translucent activity are redrawn. When the last one is 1327 * redrawn notify the top activity by calling 1328 * {@link Activity#onTranslucentConversionComplete}. 1329 * 1330 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1331 * occurred and the activity will be notified immediately. 1332 */ 1333 void notifyActivityDrawnLocked(ActivityRecord r) { 1334 mActivityContainer.setDrawn(); 1335 if ((r == null) 1336 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1337 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1338 // The last undrawn activity below the top has just been drawn. If there is an 1339 // opaque activity at the top, notify it that it can become translucent safely now. 1340 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1341 mTranslucentActivityWaiting = null; 1342 mUndrawnActivitiesBelowTopTranslucent.clear(); 1343 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1344 1345 if (waitingActivity != null) { 1346 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1347 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1348 try { 1349 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1350 waitingActivity.appToken, r != null); 1351 } catch (RemoteException e) { 1352 } 1353 } 1354 } 1355 } 1356 } 1357 1358 /** If any activities below the top running one are in the INITIALIZING state and they have a 1359 * starting window displayed then remove that starting window. It is possible that the activity 1360 * in this state will never resumed in which case that starting window will be orphaned. */ 1361 void cancelInitializingActivities() { 1362 final ActivityRecord topActivity = topRunningActivityLocked(null); 1363 boolean aboveTop = true; 1364 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1365 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1366 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1367 final ActivityRecord r = activities.get(activityNdx); 1368 if (aboveTop) { 1369 if (r == topActivity) { 1370 aboveTop = false; 1371 } 1372 continue; 1373 } 1374 1375 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1376 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1377 r.mStartingWindowShown = false; 1378 mWindowManager.removeAppStartingWindow(r.appToken); 1379 } 1380 } 1381 } 1382 } 1383 1384 /** 1385 * Ensure that the top activity in the stack is resumed. 1386 * 1387 * @param prev The previously resumed activity, for when in the process 1388 * of pausing; can be null to call from elsewhere. 1389 * 1390 * @return Returns true if something is being resumed, or false if 1391 * nothing happened. 1392 */ 1393 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1394 return resumeTopActivityLocked(prev, null); 1395 } 1396 1397 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1398 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1399 1400 ActivityRecord parent = mActivityContainer.mParentActivity; 1401 if ((parent != null && parent.state != ActivityState.RESUMED) || 1402 !mActivityContainer.isAttached()) { 1403 // Do not resume this stack if its parent is not resumed. 1404 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1405 return false; 1406 } 1407 1408 cancelInitializingActivities(); 1409 1410 // Find the first activity that is not finishing. 1411 ActivityRecord next = topRunningActivityLocked(null); 1412 1413 // Remember how we'll process this pause/resume situation, and ensure 1414 // that the state is reset however we wind up proceeding. 1415 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1416 mStackSupervisor.mUserLeaving = false; 1417 1418 if (next == null) { 1419 // There are no more activities! Let's just start up the 1420 // Launcher... 1421 ActivityOptions.abort(options); 1422 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1423 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1424 // Only resume home if on home display 1425 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1426 } 1427 1428 next.delayedResume = false; 1429 1430 // If the top activity is the resumed one, nothing to do. 1431 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1432 mStackSupervisor.allResumedActivitiesComplete()) { 1433 // Make sure we have executed any pending transitions, since there 1434 // should be nothing left to do at this point. 1435 mWindowManager.executeAppTransition(); 1436 mNoAnimActivities.clear(); 1437 ActivityOptions.abort(options); 1438 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1439 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1440 return false; 1441 } 1442 1443 final TaskRecord nextTask = next.task; 1444 final TaskRecord prevTask = prev != null ? prev.task : null; 1445 if (prevTask != null && prevTask.stack == this && 1446 prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1447 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1448 if (prevTask == nextTask) { 1449 prevTask.setFrontOfTask(); 1450 } else if (prevTask != topTask()) { 1451 // This task is going away but it was supposed to return to the home task. 1452 // Now the task above it has to return to the home task instead. 1453 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1454 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1455 } else { 1456 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1457 "resumeTopActivityLocked: Launching home next"); 1458 // Only resume home if on home display 1459 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1460 } 1461 } 1462 1463 // If we are sleeping, and there is no resumed activity, and the top 1464 // activity is paused, well that is the state we want. 1465 if (mService.isSleepingOrShuttingDown() 1466 && mLastPausedActivity == next 1467 && mStackSupervisor.allPausedActivitiesComplete()) { 1468 // Make sure we have executed any pending transitions, since there 1469 // should be nothing left to do at this point. 1470 mWindowManager.executeAppTransition(); 1471 mNoAnimActivities.clear(); 1472 ActivityOptions.abort(options); 1473 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1474 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1475 return false; 1476 } 1477 1478 // Make sure that the user who owns this activity is started. If not, 1479 // we will just leave it as is because someone should be bringing 1480 // another user's activities to the top of the stack. 1481 if (mService.mStartedUsers.get(next.userId) == null) { 1482 Slog.w(TAG, "Skipping resume of top activity " + next 1483 + ": user " + next.userId + " is stopped"); 1484 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1485 return false; 1486 } 1487 1488 // The activity may be waiting for stop, but that is no longer 1489 // appropriate for it. 1490 mStackSupervisor.mStoppingActivities.remove(next); 1491 mStackSupervisor.mGoingToSleepActivities.remove(next); 1492 next.sleeping = false; 1493 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1494 1495 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1496 1497 // If we are currently pausing an activity, then don't do anything 1498 // until that is done. 1499 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1500 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1501 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1502 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1503 return false; 1504 } 1505 1506 // Okay we are now going to start a switch, to 'next'. We may first 1507 // have to pause the current activity, but this is an important point 1508 // where we have decided to go to 'next' so keep track of that. 1509 // XXX "App Redirected" dialog is getting too many false positives 1510 // at this point, so turn off for now. 1511 if (false) { 1512 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1513 long now = SystemClock.uptimeMillis(); 1514 final boolean inTime = mLastStartedActivity.startTime != 0 1515 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1516 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1517 final int nextUid = next.info.applicationInfo.uid; 1518 if (inTime && lastUid != nextUid 1519 && lastUid != next.launchedFromUid 1520 && mService.checkPermission( 1521 android.Manifest.permission.STOP_APP_SWITCHES, 1522 -1, next.launchedFromUid) 1523 != PackageManager.PERMISSION_GRANTED) { 1524 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1525 } else { 1526 next.startTime = now; 1527 mLastStartedActivity = next; 1528 } 1529 } else { 1530 next.startTime = SystemClock.uptimeMillis(); 1531 mLastStartedActivity = next; 1532 } 1533 } 1534 1535 // We need to start pausing the current activity so the top one 1536 // can be resumed... 1537 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1538 if (mResumedActivity != null) { 1539 pausing = true; 1540 startPausingLocked(userLeaving, false); 1541 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1542 } 1543 if (pausing) { 1544 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1545 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1546 // At this point we want to put the upcoming activity's process 1547 // at the top of the LRU list, since we know we will be needing it 1548 // very soon and it would be a waste to let it get killed if it 1549 // happens to be sitting towards the end. 1550 if (next.app != null && next.app.thread != null) { 1551 // No reason to do full oom adj update here; we'll let that 1552 // happen whenever it needs to later. 1553 mService.updateLruProcessLocked(next.app, true, null); 1554 } 1555 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1556 return true; 1557 } 1558 1559 // If the most recent activity was noHistory but was only stopped rather 1560 // than stopped+finished because the device went to sleep, we need to make 1561 // sure to finish it as we're making a new activity topmost. 1562 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1563 !mLastNoHistoryActivity.finishing) { 1564 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1565 " on new resume"); 1566 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1567 null, "no-history", false); 1568 mLastNoHistoryActivity = null; 1569 } 1570 1571 if (prev != null && prev != next) { 1572 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1573 prev.waitingVisible = true; 1574 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1575 if (DEBUG_SWITCH) Slog.v( 1576 TAG, "Resuming top, waiting visible to hide: " + prev); 1577 } else { 1578 // The next activity is already visible, so hide the previous 1579 // activity's windows right now so we can show the new one ASAP. 1580 // We only do this if the previous is finishing, which should mean 1581 // it is on top of the one being resumed so hiding it quickly 1582 // is good. Otherwise, we want to do the normal route of allowing 1583 // the resumed activity to be shown so we can decide if the 1584 // previous should actually be hidden depending on whether the 1585 // new one is found to be full-screen or not. 1586 if (prev.finishing) { 1587 mWindowManager.setAppVisibility(prev.appToken, false); 1588 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1589 + prev + ", waitingVisible=" 1590 + (prev != null ? prev.waitingVisible : null) 1591 + ", nowVisible=" + next.nowVisible); 1592 } else { 1593 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1594 + prev + ", waitingVisible=" 1595 + (prev != null ? prev.waitingVisible : null) 1596 + ", nowVisible=" + next.nowVisible); 1597 } 1598 } 1599 } 1600 1601 // Launching this app's activity, make sure the app is no longer 1602 // considered stopped. 1603 try { 1604 AppGlobals.getPackageManager().setPackageStoppedState( 1605 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1606 } catch (RemoteException e1) { 1607 } catch (IllegalArgumentException e) { 1608 Slog.w(TAG, "Failed trying to unstop package " 1609 + next.packageName + ": " + e); 1610 } 1611 1612 // We are starting up the next activity, so tell the window manager 1613 // that the previous one will be hidden soon. This way it can know 1614 // to ignore it when computing the desired screen orientation. 1615 boolean anim = true; 1616 if (prev != null) { 1617 if (prev.finishing) { 1618 if (DEBUG_TRANSITION) Slog.v(TAG, 1619 "Prepare close transition: prev=" + prev); 1620 if (mNoAnimActivities.contains(prev)) { 1621 anim = false; 1622 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1623 } else { 1624 mWindowManager.prepareAppTransition(prev.task == next.task 1625 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1626 : AppTransition.TRANSIT_TASK_CLOSE, false); 1627 } 1628 mWindowManager.setAppWillBeHidden(prev.appToken); 1629 mWindowManager.setAppVisibility(prev.appToken, false); 1630 } else { 1631 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1632 if (mNoAnimActivities.contains(next)) { 1633 anim = false; 1634 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1635 } else { 1636 mWindowManager.prepareAppTransition(prev.task == next.task 1637 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1638 : AppTransition.TRANSIT_TASK_OPEN, false); 1639 } 1640 } 1641 if (false) { 1642 mWindowManager.setAppWillBeHidden(prev.appToken); 1643 mWindowManager.setAppVisibility(prev.appToken, false); 1644 } 1645 } else { 1646 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1647 if (mNoAnimActivities.contains(next)) { 1648 anim = false; 1649 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1650 } else { 1651 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1652 } 1653 } 1654 1655 Bundle resumeAnimOptions = null; 1656 if (anim) { 1657 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1658 if (opts != null) { 1659 resumeAnimOptions = opts.toBundle(); 1660 } 1661 next.applyOptionsLocked(); 1662 } else { 1663 next.clearOptionsLocked(); 1664 } 1665 1666 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1667 if (next.app != null && next.app.thread != null) { 1668 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1669 1670 // This activity is now becoming visible. 1671 mWindowManager.setAppVisibility(next.appToken, true); 1672 1673 // schedule launch ticks to collect information about slow apps. 1674 next.startLaunchTickingLocked(); 1675 1676 ActivityRecord lastResumedActivity = 1677 lastStack == null ? null :lastStack.mResumedActivity; 1678 ActivityState lastState = next.state; 1679 1680 mService.updateCpuStats(); 1681 1682 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1683 next.state = ActivityState.RESUMED; 1684 mResumedActivity = next; 1685 next.task.touchActiveTime(); 1686 mService.addRecentTaskLocked(next.task); 1687 mService.updateLruProcessLocked(next.app, true, null); 1688 updateLRUListLocked(next); 1689 mService.updateOomAdjLocked(); 1690 1691 // Have the window manager re-evaluate the orientation of 1692 // the screen based on the new activity order. 1693 boolean notUpdated = true; 1694 if (mStackSupervisor.isFrontStack(this)) { 1695 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1696 mService.mConfiguration, 1697 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1698 if (config != null) { 1699 next.frozenBeforeDestroy = true; 1700 } 1701 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1702 } 1703 1704 if (notUpdated) { 1705 // The configuration update wasn't able to keep the existing 1706 // instance of the activity, and instead started a new one. 1707 // We should be all done, but let's just make sure our activity 1708 // is still at the top and schedule another run if something 1709 // weird happened. 1710 ActivityRecord nextNext = topRunningActivityLocked(null); 1711 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1712 "Activity config changed during resume: " + next 1713 + ", new next: " + nextNext); 1714 if (nextNext != next) { 1715 // Do over! 1716 mStackSupervisor.scheduleResumeTopActivities(); 1717 } 1718 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1719 mNoAnimActivities.clear(); 1720 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1721 return true; 1722 } 1723 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1724 return false; 1725 } 1726 1727 try { 1728 // Deliver all pending results. 1729 ArrayList<ResultInfo> a = next.results; 1730 if (a != null) { 1731 final int N = a.size(); 1732 if (!next.finishing && N > 0) { 1733 if (DEBUG_RESULTS) Slog.v( 1734 TAG, "Delivering results to " + next 1735 + ": " + a); 1736 next.app.thread.scheduleSendResult(next.appToken, a); 1737 } 1738 } 1739 1740 if (next.newIntents != null) { 1741 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1742 } 1743 1744 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1745 next.userId, System.identityHashCode(next), 1746 next.task.taskId, next.shortComponentName); 1747 1748 next.sleeping = false; 1749 mService.showAskCompatModeDialogLocked(next); 1750 next.app.pendingUiClean = true; 1751 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1752 next.clearOptionsLocked(); 1753 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1754 mService.isNextTransitionForward(), resumeAnimOptions); 1755 1756 mStackSupervisor.checkReadyForSleepLocked(); 1757 1758 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1759 } catch (Exception e) { 1760 // Whoops, need to restart this activity! 1761 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1762 + lastState + ": " + next); 1763 next.state = lastState; 1764 if (lastStack != null) { 1765 lastStack.mResumedActivity = lastResumedActivity; 1766 } 1767 Slog.i(TAG, "Restarting because process died: " + next); 1768 if (!next.hasBeenLaunched) { 1769 next.hasBeenLaunched = true; 1770 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1771 mStackSupervisor.isFrontStack(lastStack)) { 1772 mWindowManager.setAppStartingWindow( 1773 next.appToken, next.packageName, next.theme, 1774 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1775 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1776 next.windowFlags, null, true); 1777 } 1778 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1779 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1780 return true; 1781 } 1782 1783 // From this point on, if something goes wrong there is no way 1784 // to recover the activity. 1785 try { 1786 next.visible = true; 1787 completeResumeLocked(next); 1788 } catch (Exception e) { 1789 // If any exception gets thrown, toss away this 1790 // activity and try the next one. 1791 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1792 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1793 "resume-exception", true); 1794 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1795 return true; 1796 } 1797 next.stopped = false; 1798 1799 } else { 1800 // Whoops, need to restart this activity! 1801 if (!next.hasBeenLaunched) { 1802 next.hasBeenLaunched = true; 1803 } else { 1804 if (SHOW_APP_STARTING_PREVIEW) { 1805 mWindowManager.setAppStartingWindow( 1806 next.appToken, next.packageName, next.theme, 1807 mService.compatibilityInfoForPackageLocked( 1808 next.info.applicationInfo), 1809 next.nonLocalizedLabel, 1810 next.labelRes, next.icon, next.logo, next.windowFlags, 1811 null, true); 1812 } 1813 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1814 } 1815 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1816 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1817 } 1818 1819 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1820 return true; 1821 } 1822 1823 private void insertTaskAtTop(TaskRecord task) { 1824 // If this is being moved to the top by another activity or being launched from the home 1825 // activity, set mOnTopOfHome accordingly. 1826 if (isOnHomeDisplay()) { 1827 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1828 final boolean fromHome = lastStack.isHomeStack(); 1829 if (!isHomeStack() && (fromHome || topTask() != task)) { 1830 task.mOnTopOfHome = fromHome; 1831 } 1832 } else { 1833 task.mOnTopOfHome = false; 1834 } 1835 1836 mTaskHistory.remove(task); 1837 // Now put task at top. 1838 int stackNdx = mTaskHistory.size(); 1839 if (!isCurrentProfileLocked(task.userId)) { 1840 // Put non-current user tasks below current user tasks. 1841 while (--stackNdx >= 0) { 1842 if (!isCurrentProfileLocked(mTaskHistory.get(stackNdx).userId)) { 1843 break; 1844 } 1845 } 1846 ++stackNdx; 1847 } 1848 mTaskHistory.add(stackNdx, task); 1849 } 1850 1851 final void startActivityLocked(ActivityRecord r, boolean newTask, 1852 boolean doResume, boolean keepCurTransition, Bundle options) { 1853 TaskRecord rTask = r.task; 1854 final int taskId = rTask.taskId; 1855 if (taskForIdLocked(taskId) == null || newTask) { 1856 // Last activity in task had been removed or ActivityManagerService is reusing task. 1857 // Insert or replace. 1858 // Might not even be in. 1859 insertTaskAtTop(rTask); 1860 mWindowManager.moveTaskToTop(taskId); 1861 } 1862 TaskRecord task = null; 1863 if (!newTask) { 1864 // If starting in an existing task, find where that is... 1865 boolean startIt = true; 1866 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1867 task = mTaskHistory.get(taskNdx); 1868 if (task == r.task) { 1869 // Here it is! Now, if this is not yet visible to the 1870 // user, then just add it without starting; it will 1871 // get started when the user navigates back to it. 1872 if (!startIt) { 1873 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1874 + task, new RuntimeException("here").fillInStackTrace()); 1875 task.addActivityToTop(r); 1876 r.putInHistory(); 1877 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1878 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1879 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1880 r.userId, r.info.configChanges); 1881 if (VALIDATE_TOKENS) { 1882 validateAppTokensLocked(); 1883 } 1884 ActivityOptions.abort(options); 1885 return; 1886 } 1887 break; 1888 } else if (task.numFullscreen > 0) { 1889 startIt = false; 1890 } 1891 } 1892 } 1893 1894 // Place a new activity at top of stack, so it is next to interact 1895 // with the user. 1896 1897 // If we are not placing the new activity frontmost, we do not want 1898 // to deliver the onUserLeaving callback to the actual frontmost 1899 // activity 1900 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1901 mStackSupervisor.mUserLeaving = false; 1902 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1903 "startActivity() behind front, mUserLeaving=false"); 1904 } 1905 1906 task = r.task; 1907 1908 // Slot the activity into the history stack and proceed 1909 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1910 new RuntimeException("here").fillInStackTrace()); 1911 task.addActivityToTop(r); 1912 task.setFrontOfTask(); 1913 1914 r.putInHistory(); 1915 if (!isHomeStack() || numActivities() > 0) { 1916 // We want to show the starting preview window if we are 1917 // switching to a new task, or the next activity's process is 1918 // not currently running. 1919 boolean showStartingIcon = newTask; 1920 ProcessRecord proc = r.app; 1921 if (proc == null) { 1922 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1923 } 1924 if (proc == null || proc.thread == null) { 1925 showStartingIcon = true; 1926 } 1927 if (DEBUG_TRANSITION) Slog.v(TAG, 1928 "Prepare open transition: starting " + r); 1929 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1930 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1931 mNoAnimActivities.add(r); 1932 } else { 1933 mWindowManager.prepareAppTransition(newTask 1934 ? AppTransition.TRANSIT_TASK_OPEN 1935 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1936 mNoAnimActivities.remove(r); 1937 } 1938 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1939 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1940 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1941 r.info.configChanges); 1942 boolean doShow = true; 1943 if (newTask) { 1944 // Even though this activity is starting fresh, we still need 1945 // to reset it to make sure we apply affinities to move any 1946 // existing activities from other tasks in to it. 1947 // If the caller has requested that the target task be 1948 // reset, then do so. 1949 if ((r.intent.getFlags() 1950 & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1951 resetTaskIfNeededLocked(r, r); 1952 doShow = topRunningNonDelayedActivityLocked(null) == r; 1953 } 1954 } 1955 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1956 // Figure out if we are transitioning from another activity that is 1957 // "has the same starting icon" as the next one. This allows the 1958 // window manager to keep the previous window it had previously 1959 // created, if it still had one. 1960 ActivityRecord prev = mResumedActivity; 1961 if (prev != null) { 1962 // We don't want to reuse the previous starting preview if: 1963 // (1) The current activity is in a different task. 1964 if (prev.task != r.task) { 1965 prev = null; 1966 } 1967 // (2) The current activity is already displayed. 1968 else if (prev.nowVisible) { 1969 prev = null; 1970 } 1971 } 1972 mWindowManager.setAppStartingWindow( 1973 r.appToken, r.packageName, r.theme, 1974 mService.compatibilityInfoForPackageLocked( 1975 r.info.applicationInfo), r.nonLocalizedLabel, 1976 r.labelRes, r.icon, r.logo, r.windowFlags, 1977 prev != null ? prev.appToken : null, showStartingIcon); 1978 r.mStartingWindowShown = true; 1979 } 1980 } else { 1981 // If this is the first activity, don't do any fancy animations, 1982 // because there is nothing for it to animate on top of. 1983 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1984 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1985 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1986 r.info.configChanges); 1987 ActivityOptions.abort(options); 1988 options = null; 1989 } 1990 if (VALIDATE_TOKENS) { 1991 validateAppTokensLocked(); 1992 } 1993 1994 if (doResume) { 1995 mStackSupervisor.resumeTopActivitiesLocked(this, r, options); 1996 } 1997 } 1998 1999 final void validateAppTokensLocked() { 2000 mValidateAppTokens.clear(); 2001 mValidateAppTokens.ensureCapacity(numActivities()); 2002 final int numTasks = mTaskHistory.size(); 2003 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 2004 TaskRecord task = mTaskHistory.get(taskNdx); 2005 final ArrayList<ActivityRecord> activities = task.mActivities; 2006 if (activities.isEmpty()) { 2007 continue; 2008 } 2009 TaskGroup group = new TaskGroup(); 2010 group.taskId = task.taskId; 2011 mValidateAppTokens.add(group); 2012 final int numActivities = activities.size(); 2013 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 2014 final ActivityRecord r = activities.get(activityNdx); 2015 group.tokens.add(r.appToken); 2016 } 2017 } 2018 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 2019 } 2020 2021 /** 2022 * Perform a reset of the given task, if needed as part of launching it. 2023 * Returns the new HistoryRecord at the top of the task. 2024 */ 2025 /** 2026 * Helper method for #resetTaskIfNeededLocked. 2027 * We are inside of the task being reset... we'll either finish this activity, push it out 2028 * for another task, or leave it as-is. 2029 * @param task The task containing the Activity (taskTop) that might be reset. 2030 * @param forceReset 2031 * @return An ActivityOptions that needs to be processed. 2032 */ 2033 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 2034 ActivityOptions topOptions = null; 2035 2036 int replyChainEnd = -1; 2037 boolean canMoveOptions = true; 2038 2039 // We only do this for activities that are not the root of the task (since if we finish 2040 // the root, we may no longer have the task!). 2041 final ArrayList<ActivityRecord> activities = task.mActivities; 2042 final int numActivities = activities.size(); 2043 for (int i = numActivities - 1; i > 0; --i ) { 2044 ActivityRecord target = activities.get(i); 2045 2046 final int flags = target.info.flags; 2047 final boolean finishOnTaskLaunch = 2048 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2049 final boolean allowTaskReparenting = 2050 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2051 final boolean clearWhenTaskReset = 2052 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2053 2054 if (!finishOnTaskLaunch 2055 && !clearWhenTaskReset 2056 && target.resultTo != null) { 2057 // If this activity is sending a reply to a previous 2058 // activity, we can't do anything with it now until 2059 // we reach the start of the reply chain. 2060 // XXX note that we are assuming the result is always 2061 // to the previous activity, which is almost always 2062 // the case but we really shouldn't count on. 2063 if (replyChainEnd < 0) { 2064 replyChainEnd = i; 2065 } 2066 } else if (!finishOnTaskLaunch 2067 && !clearWhenTaskReset 2068 && allowTaskReparenting 2069 && target.taskAffinity != null 2070 && !target.taskAffinity.equals(task.affinity)) { 2071 // If this activity has an affinity for another 2072 // task, then we need to move it out of here. We will 2073 // move it as far out of the way as possible, to the 2074 // bottom of the activity stack. This also keeps it 2075 // correctly ordered with any activities we previously 2076 // moved. 2077 final ThumbnailHolder newThumbHolder; 2078 final TaskRecord targetTask; 2079 final ActivityRecord bottom = 2080 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2081 mTaskHistory.get(0).mActivities.get(0) : null; 2082 if (bottom != null && target.taskAffinity != null 2083 && target.taskAffinity.equals(bottom.task.affinity)) { 2084 // If the activity currently at the bottom has the 2085 // same task affinity as the one we are moving, 2086 // then merge it into the same task. 2087 targetTask = bottom.task; 2088 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 2089 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2090 + " out to bottom task " + bottom.task); 2091 } else { 2092 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2093 null, null, null, false); 2094 newThumbHolder = targetTask; 2095 targetTask.affinityIntent = target.intent; 2096 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2097 + " out to new task " + target.task); 2098 } 2099 2100 target.thumbHolder = newThumbHolder; 2101 2102 final int targetTaskId = targetTask.taskId; 2103 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2104 2105 boolean noOptions = canMoveOptions; 2106 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2107 for (int srcPos = start; srcPos >= i; --srcPos) { 2108 final ActivityRecord p = activities.get(srcPos); 2109 if (p.finishing) { 2110 continue; 2111 } 2112 2113 ThumbnailHolder curThumbHolder = p.thumbHolder; 2114 canMoveOptions = false; 2115 if (noOptions && topOptions == null) { 2116 topOptions = p.takeOptionsLocked(); 2117 if (topOptions != null) { 2118 noOptions = false; 2119 } 2120 } 2121 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2122 + task + " adding to task=" + targetTask 2123 + " Callers=" + Debug.getCallers(4)); 2124 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2125 + " out to target's task " + target.task); 2126 p.setTask(targetTask, curThumbHolder, false); 2127 targetTask.addActivityAtBottom(p); 2128 2129 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2130 } 2131 2132 mWindowManager.moveTaskToBottom(targetTaskId); 2133 if (VALIDATE_TOKENS) { 2134 validateAppTokensLocked(); 2135 } 2136 2137 replyChainEnd = -1; 2138 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2139 // If the activity should just be removed -- either 2140 // because it asks for it, or the task should be 2141 // cleared -- then finish it and anything that is 2142 // part of its reply chain. 2143 int end; 2144 if (clearWhenTaskReset) { 2145 // In this case, we want to finish this activity 2146 // and everything above it, so be sneaky and pretend 2147 // like these are all in the reply chain. 2148 end = numActivities - 1; 2149 } else if (replyChainEnd < 0) { 2150 end = i; 2151 } else { 2152 end = replyChainEnd; 2153 } 2154 boolean noOptions = canMoveOptions; 2155 for (int srcPos = i; srcPos <= end; srcPos++) { 2156 ActivityRecord p = activities.get(srcPos); 2157 if (p.finishing) { 2158 continue; 2159 } 2160 canMoveOptions = false; 2161 if (noOptions && topOptions == null) { 2162 topOptions = p.takeOptionsLocked(); 2163 if (topOptions != null) { 2164 noOptions = false; 2165 } 2166 } 2167 if (DEBUG_TASKS) Slog.w(TAG, 2168 "resetTaskIntendedTask: calling finishActivity on " + p); 2169 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2170 end--; 2171 srcPos--; 2172 } 2173 } 2174 replyChainEnd = -1; 2175 } else { 2176 // If we were in the middle of a chain, well the 2177 // activity that started it all doesn't want anything 2178 // special, so leave it all as-is. 2179 replyChainEnd = -1; 2180 } 2181 } 2182 2183 return topOptions; 2184 } 2185 2186 /** 2187 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2188 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2189 * @param affinityTask The task we are looking for an affinity to. 2190 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2191 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2192 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2193 */ 2194 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2195 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2196 int replyChainEnd = -1; 2197 final int taskId = task.taskId; 2198 final String taskAffinity = task.affinity; 2199 2200 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2201 final int numActivities = activities.size(); 2202 // Do not operate on the root Activity. 2203 for (int i = numActivities - 1; i > 0; --i) { 2204 ActivityRecord target = activities.get(i); 2205 2206 final int flags = target.info.flags; 2207 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2208 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2209 2210 if (target.resultTo != null) { 2211 // If this activity is sending a reply to a previous 2212 // activity, we can't do anything with it now until 2213 // we reach the start of the reply chain. 2214 // XXX note that we are assuming the result is always 2215 // to the previous activity, which is almost always 2216 // the case but we really shouldn't count on. 2217 if (replyChainEnd < 0) { 2218 replyChainEnd = i; 2219 } 2220 } else if (topTaskIsHigher 2221 && allowTaskReparenting 2222 && taskAffinity != null 2223 && taskAffinity.equals(target.taskAffinity)) { 2224 // This activity has an affinity for our task. Either remove it if we are 2225 // clearing or move it over to our task. Note that 2226 // we currently punt on the case where we are resetting a 2227 // task that is not at the top but who has activities above 2228 // with an affinity to it... this is really not a normal 2229 // case, and we will need to later pull that task to the front 2230 // and usually at that point we will do the reset and pick 2231 // up those remaining activities. (This only happens if 2232 // someone starts an activity in a new task from an activity 2233 // in a task that is not currently on top.) 2234 if (forceReset || finishOnTaskLaunch) { 2235 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2236 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2237 for (int srcPos = start; srcPos >= i; --srcPos) { 2238 final ActivityRecord p = activities.get(srcPos); 2239 if (p.finishing) { 2240 continue; 2241 } 2242 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2243 } 2244 } else { 2245 if (taskInsertionPoint < 0) { 2246 taskInsertionPoint = task.mActivities.size(); 2247 2248 } 2249 2250 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2251 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2252 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2253 for (int srcPos = start; srcPos >= i; --srcPos) { 2254 final ActivityRecord p = activities.get(srcPos); 2255 p.setTask(task, null, false); 2256 task.addActivityAtIndex(taskInsertionPoint, p); 2257 2258 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2259 + " to stack at " + task, 2260 new RuntimeException("here").fillInStackTrace()); 2261 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2262 + " in to resetting task " + task); 2263 mWindowManager.setAppGroupId(p.appToken, taskId); 2264 } 2265 mWindowManager.moveTaskToTop(taskId); 2266 if (VALIDATE_TOKENS) { 2267 validateAppTokensLocked(); 2268 } 2269 2270 // Now we've moved it in to place... but what if this is 2271 // a singleTop activity and we have put it on top of another 2272 // instance of the same activity? Then we drop the instance 2273 // below so it remains singleTop. 2274 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2275 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2276 int targetNdx = taskActivities.indexOf(target); 2277 if (targetNdx > 0) { 2278 ActivityRecord p = taskActivities.get(targetNdx - 1); 2279 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2280 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2281 false); 2282 } 2283 } 2284 } 2285 } 2286 2287 replyChainEnd = -1; 2288 } 2289 } 2290 return taskInsertionPoint; 2291 } 2292 2293 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2294 ActivityRecord newActivity) { 2295 boolean forceReset = 2296 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2297 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2298 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2299 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2300 forceReset = true; 2301 } 2302 } 2303 2304 final TaskRecord task = taskTop.task; 2305 2306 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2307 * for remaining tasks. Used for later tasks to reparent to task. */ 2308 boolean taskFound = false; 2309 2310 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2311 ActivityOptions topOptions = null; 2312 2313 // Preserve the location for reparenting in the new task. 2314 int reparentInsertionPoint = -1; 2315 2316 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2317 final TaskRecord targetTask = mTaskHistory.get(i); 2318 2319 if (targetTask == task) { 2320 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2321 taskFound = true; 2322 } else { 2323 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2324 taskFound, forceReset, reparentInsertionPoint); 2325 } 2326 } 2327 2328 int taskNdx = mTaskHistory.indexOf(task); 2329 do { 2330 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2331 } while (taskTop == null && taskNdx >= 0); 2332 2333 if (topOptions != null) { 2334 // If we got some ActivityOptions from an activity on top that 2335 // was removed from the task, propagate them to the new real top. 2336 if (taskTop != null) { 2337 taskTop.updateOptionsLocked(topOptions); 2338 } else { 2339 topOptions.abort(); 2340 } 2341 } 2342 2343 return taskTop; 2344 } 2345 2346 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2347 String resultWho, int requestCode, int resultCode, Intent data) { 2348 2349 if (callingUid > 0) { 2350 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2351 data, r.getUriPermissionsLocked()); 2352 } 2353 2354 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2355 + " : who=" + resultWho + " req=" + requestCode 2356 + " res=" + resultCode + " data=" + data); 2357 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2358 try { 2359 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2360 list.add(new ResultInfo(resultWho, requestCode, 2361 resultCode, data)); 2362 r.app.thread.scheduleSendResult(r.appToken, list); 2363 return; 2364 } catch (Exception e) { 2365 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2366 } 2367 } 2368 2369 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2370 } 2371 2372 private void adjustFocusedActivityLocked(ActivityRecord r) { 2373 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2374 ActivityRecord next = topRunningActivityLocked(null); 2375 if (next != r) { 2376 final TaskRecord task = r.task; 2377 if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) { 2378 mStackSupervisor.moveHomeToTop(); 2379 } 2380 } 2381 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2382 if (top != null) { 2383 mService.setFocusedActivityLocked(top); 2384 } 2385 } 2386 } 2387 2388 final void stopActivityLocked(ActivityRecord r) { 2389 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2390 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2391 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2392 if (!r.finishing) { 2393 if (!mService.isSleeping()) { 2394 if (DEBUG_STATES) { 2395 Slog.d(TAG, "no-history finish of " + r); 2396 } 2397 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2398 "no-history", false); 2399 } else { 2400 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2401 + " on stop because we're just sleeping"); 2402 } 2403 } 2404 } 2405 2406 if (r.app != null && r.app.thread != null) { 2407 adjustFocusedActivityLocked(r); 2408 r.resumeKeyDispatchingLocked(); 2409 try { 2410 r.stopped = false; 2411 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2412 + " (stop requested)"); 2413 r.state = ActivityState.STOPPING; 2414 if (DEBUG_VISBILITY) Slog.v( 2415 TAG, "Stopping visible=" + r.visible + " for " + r); 2416 if (!r.visible) { 2417 mWindowManager.setAppVisibility(r.appToken, false); 2418 } 2419 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2420 if (mService.isSleepingOrShuttingDown()) { 2421 r.setSleeping(true); 2422 } 2423 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2424 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2425 } catch (Exception e) { 2426 // Maybe just ignore exceptions here... if the process 2427 // has crashed, our death notification will clean things 2428 // up. 2429 Slog.w(TAG, "Exception thrown during pause", e); 2430 // Just in case, assume it to be stopped. 2431 r.stopped = true; 2432 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2433 r.state = ActivityState.STOPPED; 2434 if (r.configDestroy) { 2435 destroyActivityLocked(r, true, false, "stop-except"); 2436 } 2437 } 2438 } 2439 } 2440 2441 /** 2442 * @return Returns true if the activity is being finished, false if for 2443 * some reason it is being left as-is. 2444 */ 2445 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2446 Intent resultData, String reason, boolean oomAdj) { 2447 ActivityRecord r = isInStackLocked(token); 2448 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2449 TAG, "Finishing activity token=" + token + " r=" 2450 + ", result=" + resultCode + ", data=" + resultData 2451 + ", reason=" + reason); 2452 if (r == null) { 2453 return false; 2454 } 2455 2456 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2457 return true; 2458 } 2459 2460 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2461 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2462 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2463 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2464 ActivityRecord r = activities.get(activityNdx); 2465 if (r.resultTo == self && r.requestCode == requestCode) { 2466 if ((r.resultWho == null && resultWho == null) || 2467 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2468 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2469 false); 2470 } 2471 } 2472 } 2473 } 2474 mService.updateOomAdjLocked(); 2475 } 2476 2477 final void finishTopRunningActivityLocked(ProcessRecord app) { 2478 ActivityRecord r = topRunningActivityLocked(null); 2479 if (r != null && r.app == app) { 2480 // If the top running activity is from this crashing 2481 // process, then terminate it to avoid getting in a loop. 2482 Slog.w(TAG, " Force finishing activity " 2483 + r.intent.getComponent().flattenToShortString()); 2484 int taskNdx = mTaskHistory.indexOf(r.task); 2485 int activityNdx = r.task.mActivities.indexOf(r); 2486 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2487 // Also terminate any activities below it that aren't yet 2488 // stopped, to avoid a situation where one will get 2489 // re-start our crashing activity once it gets resumed again. 2490 --activityNdx; 2491 if (activityNdx < 0) { 2492 do { 2493 --taskNdx; 2494 if (taskNdx < 0) { 2495 break; 2496 } 2497 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2498 } while (activityNdx < 0); 2499 } 2500 if (activityNdx >= 0) { 2501 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2502 if (r.state == ActivityState.RESUMED 2503 || r.state == ActivityState.PAUSING 2504 || r.state == ActivityState.PAUSED) { 2505 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2506 Slog.w(TAG, " Force finishing activity " 2507 + r.intent.getComponent().flattenToShortString()); 2508 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2509 } 2510 } 2511 } 2512 } 2513 } 2514 2515 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2516 ArrayList<ActivityRecord> activities = r.task.mActivities; 2517 for (int index = activities.indexOf(r); index >= 0; --index) { 2518 ActivityRecord cur = activities.get(index); 2519 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2520 break; 2521 } 2522 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2523 } 2524 return true; 2525 } 2526 2527 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2528 // send the result 2529 ActivityRecord resultTo = r.resultTo; 2530 if (resultTo != null) { 2531 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2532 + " who=" + r.resultWho + " req=" + r.requestCode 2533 + " res=" + resultCode + " data=" + resultData); 2534 if (r.info.applicationInfo.uid > 0) { 2535 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2536 resultTo.packageName, resultData, 2537 resultTo.getUriPermissionsLocked()); 2538 } 2539 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2540 resultData); 2541 r.resultTo = null; 2542 } 2543 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2544 2545 // Make sure this HistoryRecord is not holding on to other resources, 2546 // because clients have remote IPC references to this object so we 2547 // can't assume that will go away and want to avoid circular IPC refs. 2548 r.results = null; 2549 r.pendingResults = null; 2550 r.newIntents = null; 2551 r.icicle = null; 2552 } 2553 2554 /** 2555 * @return Returns true if this activity has been removed from the history 2556 * list, or false if it is still in the list and will be removed later. 2557 */ 2558 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2559 String reason, boolean oomAdj) { 2560 if (r.finishing) { 2561 Slog.w(TAG, "Duplicate finish request for " + r); 2562 return false; 2563 } 2564 2565 r.makeFinishing(); 2566 final TaskRecord task = r.task; 2567 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2568 r.userId, System.identityHashCode(r), 2569 task.taskId, r.shortComponentName, reason); 2570 final ArrayList<ActivityRecord> activities = task.mActivities; 2571 final int index = activities.indexOf(r); 2572 if (index < (activities.size() - 1)) { 2573 task.setFrontOfTask(); 2574 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2575 // If the caller asked that this activity (and all above it) 2576 // be cleared when the task is reset, don't lose that information, 2577 // but propagate it up to the next activity. 2578 ActivityRecord next = activities.get(index+1); 2579 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2580 } 2581 } 2582 2583 r.pauseKeyDispatchingLocked(); 2584 2585 adjustFocusedActivityLocked(r); 2586 2587 finishActivityResultsLocked(r, resultCode, resultData); 2588 2589 if (mResumedActivity == r) { 2590 boolean endTask = index <= 0; 2591 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2592 "Prepare close transition: finishing " + r); 2593 mWindowManager.prepareAppTransition(endTask 2594 ? AppTransition.TRANSIT_TASK_CLOSE 2595 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2596 2597 // Tell window manager to prepare for this one to be removed. 2598 mWindowManager.setAppVisibility(r.appToken, false); 2599 2600 if (mPausingActivity == null) { 2601 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2602 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2603 startPausingLocked(false, false); 2604 } 2605 2606 if (endTask) { 2607 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2608 } 2609 } else if (r.state != ActivityState.PAUSING) { 2610 // If the activity is PAUSING, we will complete the finish once 2611 // it is done pausing; else we can just directly finish it here. 2612 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2613 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2614 } else { 2615 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2616 } 2617 2618 return false; 2619 } 2620 2621 static final int FINISH_IMMEDIATELY = 0; 2622 static final int FINISH_AFTER_PAUSE = 1; 2623 static final int FINISH_AFTER_VISIBLE = 2; 2624 2625 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2626 // First things first: if this activity is currently visible, 2627 // and the resumed activity is not yet visible, then hold off on 2628 // finishing until the resumed one becomes visible. 2629 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2630 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2631 mStackSupervisor.mStoppingActivities.add(r); 2632 if (mStackSupervisor.mStoppingActivities.size() > 3 2633 || r.frontOfTask && mTaskHistory.size() <= 1) { 2634 // If we already have a few activities waiting to stop, 2635 // then give up on things going idle and start clearing 2636 // them out. Or if r is the last of activity of the last task the stack 2637 // will be empty and must be cleared immediately. 2638 mStackSupervisor.scheduleIdleLocked(); 2639 } else { 2640 mStackSupervisor.checkReadyForSleepLocked(); 2641 } 2642 } 2643 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2644 + " (finish requested)"); 2645 r.state = ActivityState.STOPPING; 2646 if (oomAdj) { 2647 mService.updateOomAdjLocked(); 2648 } 2649 return r; 2650 } 2651 2652 // make sure the record is cleaned out of other places. 2653 mStackSupervisor.mStoppingActivities.remove(r); 2654 mStackSupervisor.mGoingToSleepActivities.remove(r); 2655 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2656 if (mResumedActivity == r) { 2657 mResumedActivity = null; 2658 } 2659 final ActivityState prevState = r.state; 2660 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2661 r.state = ActivityState.FINISHING; 2662 2663 if (mode == FINISH_IMMEDIATELY 2664 || prevState == ActivityState.STOPPED 2665 || prevState == ActivityState.INITIALIZING) { 2666 // If this activity is already stopped, we can just finish 2667 // it right now. 2668 boolean activityRemoved = destroyActivityLocked(r, true, 2669 oomAdj, "finish-imm"); 2670 if (activityRemoved) { 2671 mStackSupervisor.resumeTopActivitiesLocked(); 2672 } 2673 return activityRemoved ? null : r; 2674 } 2675 2676 // Need to go through the full pause cycle to get this 2677 // activity into the stopped state and then finish it. 2678 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2679 mStackSupervisor.mFinishingActivities.add(r); 2680 r.resumeKeyDispatchingLocked(); 2681 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2682 return r; 2683 } 2684 2685 void finishAllActivitiesLocked() { 2686 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2687 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2688 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2689 final ActivityRecord r = activities.get(activityNdx); 2690 if (r.finishing) { 2691 continue; 2692 } 2693 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2694 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2695 } 2696 } 2697 } 2698 2699 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2700 Intent resultData) { 2701 final ActivityRecord srec = ActivityRecord.forToken(token); 2702 final TaskRecord task = srec.task; 2703 final ArrayList<ActivityRecord> activities = task.mActivities; 2704 final int start = activities.indexOf(srec); 2705 if (!mTaskHistory.contains(task) || (start < 0)) { 2706 return false; 2707 } 2708 int finishTo = start - 1; 2709 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2710 boolean foundParentInTask = false; 2711 final ComponentName dest = destIntent.getComponent(); 2712 if (start > 0 && dest != null) { 2713 for (int i = finishTo; i >= 0; i--) { 2714 ActivityRecord r = activities.get(i); 2715 if (r.info.packageName.equals(dest.getPackageName()) && 2716 r.info.name.equals(dest.getClassName())) { 2717 finishTo = i; 2718 parent = r; 2719 foundParentInTask = true; 2720 break; 2721 } 2722 } 2723 } 2724 2725 IActivityController controller = mService.mController; 2726 if (controller != null) { 2727 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2728 if (next != null) { 2729 // ask watcher if this is allowed 2730 boolean resumeOK = true; 2731 try { 2732 resumeOK = controller.activityResuming(next.packageName); 2733 } catch (RemoteException e) { 2734 mService.mController = null; 2735 Watchdog.getInstance().setActivityController(null); 2736 } 2737 2738 if (!resumeOK) { 2739 return false; 2740 } 2741 } 2742 } 2743 final long origId = Binder.clearCallingIdentity(); 2744 for (int i = start; i > finishTo; i--) { 2745 ActivityRecord r = activities.get(i); 2746 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2747 // Only return the supplied result for the first activity finished 2748 resultCode = Activity.RESULT_CANCELED; 2749 resultData = null; 2750 } 2751 2752 if (parent != null && foundParentInTask) { 2753 final int parentLaunchMode = parent.info.launchMode; 2754 final int destIntentFlags = destIntent.getFlags(); 2755 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2756 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2757 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2758 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2759 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2760 } else { 2761 try { 2762 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2763 destIntent.getComponent(), 0, srec.userId); 2764 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2765 null, aInfo, null, null, parent.appToken, null, 2766 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2767 0, null, true, null, null); 2768 foundParentInTask = res == ActivityManager.START_SUCCESS; 2769 } catch (RemoteException e) { 2770 foundParentInTask = false; 2771 } 2772 requestFinishActivityLocked(parent.appToken, resultCode, 2773 resultData, "navigate-up", true); 2774 } 2775 } 2776 Binder.restoreCallingIdentity(origId); 2777 return foundParentInTask; 2778 } 2779 /** 2780 * Perform the common clean-up of an activity record. This is called both 2781 * as part of destroyActivityLocked() (when destroying the client-side 2782 * representation) and cleaning things up as a result of its hosting 2783 * processing going away, in which case there is no remaining client-side 2784 * state to destroy so only the cleanup here is needed. 2785 */ 2786 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2787 boolean setState) { 2788 if (mResumedActivity == r) { 2789 mResumedActivity = null; 2790 } 2791 if (mPausingActivity == r) { 2792 mPausingActivity = null; 2793 } 2794 mService.clearFocusedActivity(r); 2795 2796 r.configDestroy = false; 2797 r.frozenBeforeDestroy = false; 2798 2799 if (setState) { 2800 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2801 r.state = ActivityState.DESTROYED; 2802 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2803 r.app = null; 2804 } 2805 2806 // Make sure this record is no longer in the pending finishes list. 2807 // This could happen, for example, if we are trimming activities 2808 // down to the max limit while they are still waiting to finish. 2809 mStackSupervisor.mFinishingActivities.remove(r); 2810 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2811 2812 // Remove any pending results. 2813 if (r.finishing && r.pendingResults != null) { 2814 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2815 PendingIntentRecord rec = apr.get(); 2816 if (rec != null) { 2817 mService.cancelIntentSenderLocked(rec, false); 2818 } 2819 } 2820 r.pendingResults = null; 2821 } 2822 2823 if (cleanServices) { 2824 cleanUpActivityServicesLocked(r); 2825 } 2826 2827 // Get rid of any pending idle timeouts. 2828 removeTimeoutsForActivityLocked(r); 2829 } 2830 2831 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2832 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2833 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2834 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2835 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2836 r.finishLaunchTickingLocked(); 2837 } 2838 2839 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2840 mStackSupervisor.removeChildActivityContainers(r); 2841 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2842 r.makeFinishing(); 2843 if (DEBUG_ADD_REMOVE) { 2844 RuntimeException here = new RuntimeException("here"); 2845 here.fillInStackTrace(); 2846 Slog.i(TAG, "Removing activity " + r + " from stack"); 2847 } 2848 r.takeFromHistory(); 2849 removeTimeoutsForActivityLocked(r); 2850 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2851 r.state = ActivityState.DESTROYED; 2852 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2853 r.app = null; 2854 mWindowManager.removeAppToken(r.appToken); 2855 if (VALIDATE_TOKENS) { 2856 validateAppTokensLocked(); 2857 } 2858 final TaskRecord task = r.task; 2859 if (task != null && task.removeActivity(r)) { 2860 if (DEBUG_STACK) Slog.i(TAG, 2861 "removeActivityFromHistoryLocked: last activity removed from " + this); 2862 if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) { 2863 mStackSupervisor.moveHomeToTop(); 2864 } 2865 removeTask(task); 2866 } 2867 cleanUpActivityServicesLocked(r); 2868 r.removeUriPermissionsLocked(); 2869 } 2870 2871 /** 2872 * Perform clean-up of service connections in an activity record. 2873 */ 2874 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2875 // Throw away any services that have been bound by this activity. 2876 if (r.connections != null) { 2877 Iterator<ConnectionRecord> it = r.connections.iterator(); 2878 while (it.hasNext()) { 2879 ConnectionRecord c = it.next(); 2880 mService.mServices.removeConnectionLocked(c, null, r); 2881 } 2882 r.connections = null; 2883 } 2884 } 2885 2886 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2887 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2888 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2889 mHandler.sendMessage(msg); 2890 } 2891 2892 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2893 boolean lastIsOpaque = false; 2894 boolean activityRemoved = false; 2895 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2896 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2897 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2898 final ActivityRecord r = activities.get(activityNdx); 2899 if (r.finishing) { 2900 continue; 2901 } 2902 if (r.fullscreen) { 2903 lastIsOpaque = true; 2904 } 2905 if (owner != null && r.app != owner) { 2906 continue; 2907 } 2908 if (!lastIsOpaque) { 2909 continue; 2910 } 2911 // We can destroy this one if we have its icicle saved and 2912 // it is not in the process of pausing/stopping/finishing. 2913 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2914 && r.haveState && !r.visible && r.stopped 2915 && r.state != ActivityState.DESTROYING 2916 && r.state != ActivityState.DESTROYED) { 2917 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2918 + " resumed=" + mResumedActivity 2919 + " pausing=" + mPausingActivity); 2920 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2921 activityRemoved = true; 2922 } 2923 } 2924 } 2925 } 2926 if (activityRemoved) { 2927 mStackSupervisor.resumeTopActivitiesLocked(); 2928 } 2929 } 2930 2931 /** 2932 * Destroy the current CLIENT SIDE instance of an activity. This may be 2933 * called both when actually finishing an activity, or when performing 2934 * a configuration switch where we destroy the current client-side object 2935 * but then create a new client-side object for this same HistoryRecord. 2936 */ 2937 final boolean destroyActivityLocked(ActivityRecord r, 2938 boolean removeFromApp, boolean oomAdj, String reason) { 2939 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2940 TAG, "Removing activity from " + reason + ": token=" + r 2941 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2942 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2943 r.userId, System.identityHashCode(r), 2944 r.task.taskId, r.shortComponentName, reason); 2945 2946 boolean removedFromHistory = false; 2947 2948 cleanUpActivityLocked(r, false, false); 2949 2950 final boolean hadApp = r.app != null; 2951 2952 if (hadApp) { 2953 if (removeFromApp) { 2954 r.app.activities.remove(r); 2955 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2956 mService.mHeavyWeightProcess = null; 2957 mService.mHandler.sendEmptyMessage( 2958 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2959 } 2960 if (r.app.activities.isEmpty()) { 2961 // No longer have activities, so update LRU list and oom adj. 2962 mService.updateLruProcessLocked(r.app, false, null); 2963 mService.updateOomAdjLocked(); 2964 } 2965 } 2966 2967 boolean skipDestroy = false; 2968 2969 try { 2970 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2971 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2972 r.configChangeFlags); 2973 } catch (Exception e) { 2974 // We can just ignore exceptions here... if the process 2975 // has crashed, our death notification will clean things 2976 // up. 2977 //Slog.w(TAG, "Exception thrown during finish", e); 2978 if (r.finishing) { 2979 removeActivityFromHistoryLocked(r); 2980 removedFromHistory = true; 2981 skipDestroy = true; 2982 } 2983 } 2984 2985 r.nowVisible = false; 2986 2987 // If the activity is finishing, we need to wait on removing it 2988 // from the list to give it a chance to do its cleanup. During 2989 // that time it may make calls back with its token so we need to 2990 // be able to find it on the list and so we don't want to remove 2991 // it from the list yet. Otherwise, we can just immediately put 2992 // it in the destroyed state since we are not removing it from the 2993 // list. 2994 if (r.finishing && !skipDestroy) { 2995 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2996 + " (destroy requested)"); 2997 r.state = ActivityState.DESTROYING; 2998 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2999 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 3000 } else { 3001 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 3002 r.state = ActivityState.DESTROYED; 3003 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3004 r.app = null; 3005 } 3006 } else { 3007 // remove this record from the history. 3008 if (r.finishing) { 3009 removeActivityFromHistoryLocked(r); 3010 removedFromHistory = true; 3011 } else { 3012 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 3013 r.state = ActivityState.DESTROYED; 3014 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3015 r.app = null; 3016 } 3017 } 3018 3019 r.configChangeFlags = 0; 3020 3021 if (!mLRUActivities.remove(r) && hadApp) { 3022 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 3023 } 3024 3025 return removedFromHistory; 3026 } 3027 3028 final void activityDestroyedLocked(IBinder token) { 3029 final long origId = Binder.clearCallingIdentity(); 3030 try { 3031 ActivityRecord r = ActivityRecord.forToken(token); 3032 if (r != null) { 3033 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3034 } 3035 3036 if (isInStackLocked(token) != null) { 3037 if (r.state == ActivityState.DESTROYING) { 3038 cleanUpActivityLocked(r, true, false); 3039 removeActivityFromHistoryLocked(r); 3040 } 3041 } 3042 mStackSupervisor.resumeTopActivitiesLocked(); 3043 } finally { 3044 Binder.restoreCallingIdentity(origId); 3045 } 3046 } 3047 3048 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3049 ProcessRecord app, String listName) { 3050 int i = list.size(); 3051 if (DEBUG_CLEANUP) Slog.v( 3052 TAG, "Removing app " + app + " from list " + listName 3053 + " with " + i + " entries"); 3054 while (i > 0) { 3055 i--; 3056 ActivityRecord r = list.get(i); 3057 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3058 if (r.app == app) { 3059 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3060 list.remove(i); 3061 removeTimeoutsForActivityLocked(r); 3062 } 3063 } 3064 } 3065 3066 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3067 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3068 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3069 "mStoppingActivities"); 3070 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3071 "mGoingToSleepActivities"); 3072 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3073 "mWaitingVisibleActivities"); 3074 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3075 "mFinishingActivities"); 3076 3077 boolean hasVisibleActivities = false; 3078 3079 // Clean out the history list. 3080 int i = numActivities(); 3081 if (DEBUG_CLEANUP) Slog.v( 3082 TAG, "Removing app " + app + " from history with " + i + " entries"); 3083 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3084 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3085 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3086 final ActivityRecord r = activities.get(activityNdx); 3087 --i; 3088 if (DEBUG_CLEANUP) Slog.v( 3089 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3090 if (r.app == app) { 3091 boolean remove; 3092 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3093 // Don't currently have state for the activity, or 3094 // it is finishing -- always remove it. 3095 remove = true; 3096 } else if (r.launchCount > 2 && 3097 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3098 // We have launched this activity too many times since it was 3099 // able to run, so give up and remove it. 3100 remove = true; 3101 } else { 3102 // The process may be gone, but the activity lives on! 3103 remove = false; 3104 } 3105 if (remove) { 3106 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3107 RuntimeException here = new RuntimeException("here"); 3108 here.fillInStackTrace(); 3109 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3110 + ": haveState=" + r.haveState 3111 + " stateNotNeeded=" + r.stateNotNeeded 3112 + " finishing=" + r.finishing 3113 + " state=" + r.state, here); 3114 } 3115 if (!r.finishing) { 3116 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3117 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3118 r.userId, System.identityHashCode(r), 3119 r.task.taskId, r.shortComponentName, 3120 "proc died without state saved"); 3121 if (r.state == ActivityState.RESUMED) { 3122 mService.updateUsageStats(r, false); 3123 } 3124 } 3125 removeActivityFromHistoryLocked(r); 3126 3127 } else { 3128 // We have the current state for this activity, so 3129 // it can be restarted later when needed. 3130 if (localLOGV) Slog.v( 3131 TAG, "Keeping entry, setting app to null"); 3132 if (r.visible) { 3133 hasVisibleActivities = true; 3134 } 3135 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3136 + r); 3137 r.app = null; 3138 r.nowVisible = false; 3139 if (!r.haveState) { 3140 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3141 "App died, clearing saved state of " + r); 3142 r.icicle = null; 3143 } 3144 } 3145 3146 cleanUpActivityLocked(r, true, true); 3147 } 3148 } 3149 } 3150 3151 return hasVisibleActivities; 3152 } 3153 3154 final void updateTransitLocked(int transit, Bundle options) { 3155 if (options != null) { 3156 ActivityRecord r = topRunningActivityLocked(null); 3157 if (r != null && r.state != ActivityState.RESUMED) { 3158 r.updateOptionsLocked(options); 3159 } else { 3160 ActivityOptions.abort(options); 3161 } 3162 } 3163 mWindowManager.prepareAppTransition(transit, false); 3164 } 3165 3166 void moveHomeTaskToTop() { 3167 final int top = mTaskHistory.size() - 1; 3168 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3169 final TaskRecord task = mTaskHistory.get(taskNdx); 3170 if (task.isHomeTask()) { 3171 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task); 3172 mTaskHistory.remove(taskNdx); 3173 mTaskHistory.add(top, task); 3174 mWindowManager.moveTaskToTop(task.taskId); 3175 return; 3176 } 3177 } 3178 } 3179 3180 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3181 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3182 3183 final int numTasks = mTaskHistory.size(); 3184 final int index = mTaskHistory.indexOf(tr); 3185 if (numTasks == 0 || index < 0) { 3186 // nothing to do! 3187 if (reason != null && 3188 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3189 ActivityOptions.abort(options); 3190 } else { 3191 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3192 } 3193 return; 3194 } 3195 3196 moveToFront(); 3197 3198 // Shift all activities with this task up to the top 3199 // of the stack, keeping them in the same internal order. 3200 insertTaskAtTop(tr); 3201 3202 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3203 if (reason != null && 3204 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3205 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3206 ActivityRecord r = topRunningActivityLocked(null); 3207 if (r != null) { 3208 mNoAnimActivities.add(r); 3209 } 3210 ActivityOptions.abort(options); 3211 } else { 3212 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3213 } 3214 3215 mWindowManager.moveTaskToTop(tr.taskId); 3216 3217 mStackSupervisor.resumeTopActivitiesLocked(); 3218 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3219 3220 if (VALIDATE_TOKENS) { 3221 validateAppTokensLocked(); 3222 } 3223 } 3224 3225 /** 3226 * Worker method for rearranging history stack. Implements the function of moving all 3227 * activities for a specific task (gathering them if disjoint) into a single group at the 3228 * bottom of the stack. 3229 * 3230 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3231 * to premeptively cancel the move. 3232 * 3233 * @param taskId The taskId to collect and move to the bottom. 3234 * @return Returns true if the move completed, false if not. 3235 */ 3236 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3237 final TaskRecord tr = taskForIdLocked(taskId); 3238 if (tr == null) { 3239 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3240 return false; 3241 } 3242 3243 Slog.i(TAG, "moveTaskToBack: " + tr); 3244 3245 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3246 3247 // If we have a watcher, preflight the move before committing to it. First check 3248 // for *other* available tasks, but if none are available, then try again allowing the 3249 // current task to be selected. 3250 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3251 ActivityRecord next = topRunningActivityLocked(null, taskId); 3252 if (next == null) { 3253 next = topRunningActivityLocked(null, 0); 3254 } 3255 if (next != null) { 3256 // ask watcher if this is allowed 3257 boolean moveOK = true; 3258 try { 3259 moveOK = mService.mController.activityResuming(next.packageName); 3260 } catch (RemoteException e) { 3261 mService.mController = null; 3262 Watchdog.getInstance().setActivityController(null); 3263 } 3264 if (!moveOK) { 3265 return false; 3266 } 3267 } 3268 } 3269 3270 if (DEBUG_TRANSITION) Slog.v(TAG, 3271 "Prepare to back transition: task=" + taskId); 3272 3273 mTaskHistory.remove(tr); 3274 mTaskHistory.add(0, tr); 3275 3276 // There is an assumption that moving a task to the back moves it behind the home activity. 3277 // We make sure here that some activity in the stack will launch home. 3278 ActivityRecord lastActivity = null; 3279 int numTasks = mTaskHistory.size(); 3280 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3281 final TaskRecord task = mTaskHistory.get(taskNdx); 3282 if (task.mOnTopOfHome) { 3283 break; 3284 } 3285 if (taskNdx == 1) { 3286 // Set the last task before tr to go to home. 3287 task.mOnTopOfHome = true; 3288 } 3289 } 3290 3291 if (reason != null && 3292 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3293 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3294 ActivityRecord r = topRunningActivityLocked(null); 3295 if (r != null) { 3296 mNoAnimActivities.add(r); 3297 } 3298 } else { 3299 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3300 } 3301 mWindowManager.moveTaskToBottom(taskId); 3302 3303 if (VALIDATE_TOKENS) { 3304 validateAppTokensLocked(); 3305 } 3306 3307 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3308 if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) { 3309 tr.mOnTopOfHome = false; 3310 return mStackSupervisor.resumeHomeActivity(null); 3311 } 3312 3313 mStackSupervisor.resumeTopActivitiesLocked(); 3314 return true; 3315 } 3316 3317 static final void logStartActivity(int tag, ActivityRecord r, 3318 TaskRecord task) { 3319 final Uri data = r.intent.getData(); 3320 final String strData = data != null ? data.toSafeString() : null; 3321 3322 EventLog.writeEvent(tag, 3323 r.userId, System.identityHashCode(r), task.taskId, 3324 r.shortComponentName, r.intent.getAction(), 3325 r.intent.getType(), strData, r.intent.getFlags()); 3326 } 3327 3328 /** 3329 * Make sure the given activity matches the current configuration. Returns 3330 * false if the activity had to be destroyed. Returns true if the 3331 * configuration is the same, or the activity will remain running as-is 3332 * for whatever reason. Ensures the HistoryRecord is updated with the 3333 * correct configuration and all other bookkeeping is handled. 3334 */ 3335 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3336 int globalChanges) { 3337 if (mConfigWillChange) { 3338 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3339 "Skipping config check (will change): " + r); 3340 return true; 3341 } 3342 3343 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3344 "Ensuring correct configuration: " + r); 3345 3346 // Short circuit: if the two configurations are the exact same 3347 // object (the common case), then there is nothing to do. 3348 Configuration newConfig = mService.mConfiguration; 3349 if (r.configuration == newConfig && !r.forceNewConfig) { 3350 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3351 "Configuration unchanged in " + r); 3352 return true; 3353 } 3354 3355 // We don't worry about activities that are finishing. 3356 if (r.finishing) { 3357 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3358 "Configuration doesn't matter in finishing " + r); 3359 r.stopFreezingScreenLocked(false); 3360 return true; 3361 } 3362 3363 // Okay we now are going to make this activity have the new config. 3364 // But then we need to figure out how it needs to deal with that. 3365 Configuration oldConfig = r.configuration; 3366 r.configuration = newConfig; 3367 3368 // Determine what has changed. May be nothing, if this is a config 3369 // that has come back from the app after going idle. In that case 3370 // we just want to leave the official config object now in the 3371 // activity and do nothing else. 3372 final int changes = oldConfig.diff(newConfig); 3373 if (changes == 0 && !r.forceNewConfig) { 3374 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3375 "Configuration no differences in " + r); 3376 return true; 3377 } 3378 3379 // If the activity isn't currently running, just leave the new 3380 // configuration and it will pick that up next time it starts. 3381 if (r.app == null || r.app.thread == null) { 3382 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3383 "Configuration doesn't matter not running " + r); 3384 r.stopFreezingScreenLocked(false); 3385 r.forceNewConfig = false; 3386 return true; 3387 } 3388 3389 // Figure out how to handle the changes between the configurations. 3390 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3391 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3392 + Integer.toHexString(changes) + ", handles=0x" 3393 + Integer.toHexString(r.info.getRealConfigChanged()) 3394 + ", newConfig=" + newConfig); 3395 } 3396 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3397 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3398 r.configChangeFlags |= changes; 3399 r.startFreezingScreenLocked(r.app, globalChanges); 3400 r.forceNewConfig = false; 3401 if (r.app == null || r.app.thread == null) { 3402 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3403 "Config is destroying non-running " + r); 3404 destroyActivityLocked(r, true, false, "config"); 3405 } else if (r.state == ActivityState.PAUSING) { 3406 // A little annoying: we are waiting for this activity to 3407 // finish pausing. Let's not do anything now, but just 3408 // flag that it needs to be restarted when done pausing. 3409 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3410 "Config is skipping already pausing " + r); 3411 r.configDestroy = true; 3412 return true; 3413 } else if (r.state == ActivityState.RESUMED) { 3414 // Try to optimize this case: the configuration is changing 3415 // and we need to restart the top, resumed activity. 3416 // Instead of doing the normal handshaking, just say 3417 // "restart!". 3418 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3419 "Config is relaunching resumed " + r); 3420 relaunchActivityLocked(r, r.configChangeFlags, true); 3421 r.configChangeFlags = 0; 3422 } else { 3423 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3424 "Config is relaunching non-resumed " + r); 3425 relaunchActivityLocked(r, r.configChangeFlags, false); 3426 r.configChangeFlags = 0; 3427 } 3428 3429 // All done... tell the caller we weren't able to keep this 3430 // activity around. 3431 return false; 3432 } 3433 3434 // Default case: the activity can handle this new configuration, so 3435 // hand it over. Note that we don't need to give it the new 3436 // configuration, since we always send configuration changes to all 3437 // process when they happen so it can just use whatever configuration 3438 // it last got. 3439 if (r.app != null && r.app.thread != null) { 3440 try { 3441 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3442 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3443 } catch (RemoteException e) { 3444 // If process died, whatever. 3445 } 3446 } 3447 r.stopFreezingScreenLocked(false); 3448 3449 return true; 3450 } 3451 3452 private boolean relaunchActivityLocked(ActivityRecord r, 3453 int changes, boolean andResume) { 3454 List<ResultInfo> results = null; 3455 List<Intent> newIntents = null; 3456 if (andResume) { 3457 results = r.results; 3458 newIntents = r.newIntents; 3459 } 3460 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3461 + " with results=" + results + " newIntents=" + newIntents 3462 + " andResume=" + andResume); 3463 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3464 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3465 r.task.taskId, r.shortComponentName); 3466 3467 r.startFreezingScreenLocked(r.app, 0); 3468 3469 mStackSupervisor.removeChildActivityContainers(r); 3470 3471 try { 3472 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3473 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3474 + r); 3475 r.forceNewConfig = false; 3476 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3477 changes, !andResume, new Configuration(mService.mConfiguration)); 3478 // Note: don't need to call pauseIfSleepingLocked() here, because 3479 // the caller will only pass in 'andResume' if this activity is 3480 // currently resumed, which implies we aren't sleeping. 3481 } catch (RemoteException e) { 3482 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3483 } 3484 3485 if (andResume) { 3486 r.results = null; 3487 r.newIntents = null; 3488 r.state = ActivityState.RESUMED; 3489 } else { 3490 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3491 r.state = ActivityState.PAUSED; 3492 } 3493 3494 return true; 3495 } 3496 3497 boolean willActivityBeVisibleLocked(IBinder token) { 3498 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3499 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3500 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3501 final ActivityRecord r = activities.get(activityNdx); 3502 if (r.appToken == token) { 3503 return true; 3504 } 3505 if (r.fullscreen && !r.finishing) { 3506 return false; 3507 } 3508 } 3509 } 3510 final ActivityRecord r = ActivityRecord.forToken(token); 3511 if (r == null) { 3512 return false; 3513 } 3514 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3515 + " would have returned true for r=" + r); 3516 return !r.finishing; 3517 } 3518 3519 void closeSystemDialogsLocked() { 3520 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3521 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3522 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3523 final ActivityRecord r = activities.get(activityNdx); 3524 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3525 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3526 } 3527 } 3528 } 3529 } 3530 3531 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3532 boolean didSomething = false; 3533 TaskRecord lastTask = null; 3534 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3535 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3536 int numActivities = activities.size(); 3537 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3538 ActivityRecord r = activities.get(activityNdx); 3539 final boolean samePackage = r.packageName.equals(name) 3540 || (name == null && r.userId == userId); 3541 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3542 && (samePackage || r.task == lastTask) 3543 && (r.app == null || evenPersistent || !r.app.persistent)) { 3544 if (!doit) { 3545 if (r.finishing) { 3546 // If this activity is just finishing, then it is not 3547 // interesting as far as something to stop. 3548 continue; 3549 } 3550 return true; 3551 } 3552 didSomething = true; 3553 Slog.i(TAG, " Force finishing activity " + r); 3554 if (samePackage) { 3555 if (r.app != null) { 3556 r.app.removed = true; 3557 } 3558 r.app = null; 3559 } 3560 lastTask = r.task; 3561 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3562 true)) { 3563 // r has been deleted from mActivities, accommodate. 3564 --numActivities; 3565 --activityNdx; 3566 } 3567 } 3568 } 3569 } 3570 return didSomething; 3571 } 3572 3573 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3574 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3575 final TaskRecord task = mTaskHistory.get(taskNdx); 3576 ActivityRecord r = null; 3577 ActivityRecord top = null; 3578 int numActivities = 0; 3579 int numRunning = 0; 3580 final ArrayList<ActivityRecord> activities = task.mActivities; 3581 if (activities.isEmpty()) { 3582 continue; 3583 } 3584 if (!allowed && !task.isHomeTask() && task.creatorUid != callingUid) { 3585 continue; 3586 } 3587 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3588 r = activities.get(activityNdx); 3589 3590 // Initialize state for next task if needed. 3591 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3592 top = r; 3593 numActivities = numRunning = 0; 3594 } 3595 3596 // Add 'r' into the current task. 3597 numActivities++; 3598 if (r.app != null && r.app.thread != null) { 3599 numRunning++; 3600 } 3601 3602 if (localLOGV) Slog.v( 3603 TAG, r.intent.getComponent().flattenToShortString() 3604 + ": task=" + r.task); 3605 } 3606 3607 RunningTaskInfo ci = new RunningTaskInfo(); 3608 ci.id = task.taskId; 3609 ci.baseActivity = r.intent.getComponent(); 3610 ci.topActivity = top.intent.getComponent(); 3611 ci.lastActiveTime = task.lastActiveTime; 3612 3613 if (top.thumbHolder != null) { 3614 ci.description = top.thumbHolder.lastDescription; 3615 } 3616 ci.numActivities = numActivities; 3617 ci.numRunning = numRunning; 3618 //System.out.println( 3619 // "#" + maxNum + ": " + " descr=" + ci.description); 3620 list.add(ci); 3621 } 3622 } 3623 3624 public void unhandledBackLocked() { 3625 final int top = mTaskHistory.size() - 1; 3626 if (DEBUG_SWITCH) Slog.d( 3627 TAG, "Performing unhandledBack(): top activity at " + top); 3628 if (top >= 0) { 3629 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3630 int activityTop = activities.size() - 1; 3631 if (activityTop > 0) { 3632 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3633 "unhandled-back", true); 3634 } 3635 } 3636 } 3637 3638 /** 3639 * Reset local parameters because an app's activity died. 3640 * @param app The app of the activity that died. 3641 * @return result from removeHistoryRecordsForAppLocked. 3642 */ 3643 boolean handleAppDiedLocked(ProcessRecord app) { 3644 if (mPausingActivity != null && mPausingActivity.app == app) { 3645 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3646 "App died while pausing: " + mPausingActivity); 3647 mPausingActivity = null; 3648 } 3649 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3650 mLastPausedActivity = null; 3651 mLastNoHistoryActivity = null; 3652 } 3653 3654 return removeHistoryRecordsForAppLocked(app); 3655 } 3656 3657 void handleAppCrashLocked(ProcessRecord app) { 3658 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3659 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3660 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3661 final ActivityRecord r = activities.get(activityNdx); 3662 if (r.app == app) { 3663 Slog.w(TAG, " Force finishing activity " 3664 + r.intent.getComponent().flattenToShortString()); 3665 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3666 } 3667 } 3668 } 3669 } 3670 3671 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3672 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3673 boolean printed = false; 3674 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3675 final TaskRecord task = mTaskHistory.get(taskNdx); 3676 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3677 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3678 dumpClient, dumpPackage, needSep, header, 3679 " Task id #" + task.taskId); 3680 if (printed) { 3681 header = null; 3682 } 3683 } 3684 return printed; 3685 } 3686 3687 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3688 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3689 3690 if ("all".equals(name)) { 3691 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3692 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3693 } 3694 } else if ("top".equals(name)) { 3695 final int top = mTaskHistory.size() - 1; 3696 if (top >= 0) { 3697 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3698 int listTop = list.size() - 1; 3699 if (listTop >= 0) { 3700 activities.add(list.get(listTop)); 3701 } 3702 } 3703 } else { 3704 ItemMatcher matcher = new ItemMatcher(); 3705 matcher.build(name); 3706 3707 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3708 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3709 if (matcher.match(r1, r1.intent.getComponent())) { 3710 activities.add(r1); 3711 } 3712 } 3713 } 3714 } 3715 3716 return activities; 3717 } 3718 3719 ActivityRecord restartPackage(String packageName) { 3720 ActivityRecord starting = topRunningActivityLocked(null); 3721 3722 // All activities that came from the package must be 3723 // restarted as if there was a config change. 3724 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3725 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3726 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3727 final ActivityRecord a = activities.get(activityNdx); 3728 if (a.info.packageName.equals(packageName)) { 3729 a.forceNewConfig = true; 3730 if (starting != null && a == starting && a.visible) { 3731 a.startFreezingScreenLocked(starting.app, 3732 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3733 } 3734 } 3735 } 3736 } 3737 3738 return starting; 3739 } 3740 3741 void removeTask(TaskRecord task) { 3742 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3743 mWindowManager.removeTask(task.taskId); 3744 final ActivityRecord r = mResumedActivity; 3745 if (r != null && r.task == task) { 3746 mResumedActivity = null; 3747 } 3748 3749 final int taskNdx = mTaskHistory.indexOf(task); 3750 final int topTaskNdx = mTaskHistory.size() - 1; 3751 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3752 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3753 } 3754 mTaskHistory.remove(task); 3755 3756 if (task.mActivities.isEmpty()) { 3757 final boolean isVoiceSession = task.voiceSession != null; 3758 if (isVoiceSession) { 3759 try { 3760 task.voiceSession.taskFinished(task.intent, task.taskId); 3761 } catch (RemoteException e) { 3762 } 3763 } 3764 if (task.autoRemoveFromRecents() || isVoiceSession) { 3765 // Task creator asked to remove this when done, or this task was a voice 3766 // interaction, so it should not remain on the recent tasks list. 3767 mService.mRecentTasks.remove(task); 3768 } 3769 } 3770 3771 if (mTaskHistory.isEmpty()) { 3772 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3773 if (isOnHomeDisplay()) { 3774 mStackSupervisor.moveHomeStack(!isHomeStack()); 3775 } 3776 if (mStacks != null) { 3777 mStacks.remove(this); 3778 mStacks.add(0, this); 3779 } 3780 } 3781 } 3782 3783 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 3784 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 3785 boolean toTop) { 3786 TaskRecord task = new TaskRecord(taskId, info, intent, voiceSession, voiceInteractor); 3787 addTask(task, toTop, false); 3788 return task; 3789 } 3790 3791 ArrayList<TaskRecord> getAllTasks() { 3792 return new ArrayList<TaskRecord>(mTaskHistory); 3793 } 3794 3795 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 3796 task.stack = this; 3797 if (toTop) { 3798 insertTaskAtTop(task); 3799 } else { 3800 mTaskHistory.add(0, task); 3801 } 3802 if (!moving && task.voiceSession != null) { 3803 try { 3804 task.voiceSession.taskStarted(task.intent, task.taskId); 3805 } catch (RemoteException e) { 3806 } 3807 } 3808 } 3809 3810 public int getStackId() { 3811 return mStackId; 3812 } 3813 3814 @Override 3815 public String toString() { 3816 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3817 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3818 } 3819} 3820