ActivityStack.java revision 3b1dac8c5aea2aaf12453aa8063630bd6bde0a92
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.am; 18 19import static com.android.server.am.ActivityManagerService.TAG; 20import static com.android.server.am.ActivityManagerService.localLOGV; 21import static com.android.server.am.ActivityManagerService.DEBUG_CLEANUP; 22import static com.android.server.am.ActivityManagerService.DEBUG_CONFIGURATION; 23import static com.android.server.am.ActivityManagerService.DEBUG_PAUSE; 24import static com.android.server.am.ActivityManagerService.DEBUG_RESULTS; 25import static com.android.server.am.ActivityManagerService.DEBUG_STACK; 26import static com.android.server.am.ActivityManagerService.DEBUG_SWITCH; 27import static com.android.server.am.ActivityManagerService.DEBUG_TASKS; 28import static com.android.server.am.ActivityManagerService.DEBUG_TRANSITION; 29import static com.android.server.am.ActivityManagerService.DEBUG_USER_LEAVING; 30import static com.android.server.am.ActivityManagerService.DEBUG_VISBILITY; 31import static com.android.server.am.ActivityManagerService.VALIDATE_TOKENS; 32 33import static com.android.server.am.ActivityRecord.HOME_ACTIVITY_TYPE; 34import static com.android.server.am.ActivityRecord.APPLICATION_ACTIVITY_TYPE; 35 36import static com.android.server.am.ActivityStackSupervisor.DEBUG_ADD_REMOVE; 37import static com.android.server.am.ActivityStackSupervisor.DEBUG_APP; 38import static com.android.server.am.ActivityStackSupervisor.DEBUG_CONTAINERS; 39import static com.android.server.am.ActivityStackSupervisor.DEBUG_SAVED_STATE; 40import static com.android.server.am.ActivityStackSupervisor.DEBUG_SCREENSHOTS; 41import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 42import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 43 44import com.android.internal.app.IVoiceInteractor; 45import com.android.internal.os.BatteryStatsImpl; 46import com.android.server.Watchdog; 47import com.android.server.am.ActivityManagerService.ItemMatcher; 48import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 49import com.android.server.am.ActivityStackSupervisor.ActivityDisplay; 50import com.android.server.wm.AppTransition; 51import com.android.server.wm.TaskGroup; 52import com.android.server.wm.WindowManagerService; 53 54import android.app.Activity; 55import android.app.ActivityManager; 56import android.app.ActivityOptions; 57import android.app.AppGlobals; 58import android.app.IActivityController; 59import android.app.ResultInfo; 60import android.app.ActivityManager.RunningTaskInfo; 61import android.content.ComponentName; 62import android.content.Intent; 63import android.content.pm.ActivityInfo; 64import android.content.pm.PackageManager; 65import android.content.res.Configuration; 66import android.content.res.Resources; 67import android.graphics.Bitmap; 68import android.net.Uri; 69import android.os.Binder; 70import android.os.Bundle; 71import android.os.Debug; 72import android.os.Handler; 73import android.os.IBinder; 74import android.os.Looper; 75import android.os.Message; 76import android.os.PersistableBundle; 77import android.os.RemoteException; 78import android.os.SystemClock; 79import android.os.Trace; 80import android.os.UserHandle; 81import android.service.voice.IVoiceInteractionSession; 82import android.util.EventLog; 83import android.util.Slog; 84import android.view.Display; 85 86import java.io.FileDescriptor; 87import java.io.PrintWriter; 88import java.lang.ref.WeakReference; 89import java.util.ArrayList; 90import java.util.Iterator; 91import java.util.List; 92import java.util.Objects; 93 94/** 95 * State and management of a single stack of activities. 96 */ 97final class ActivityStack { 98 99 // Ticks during which we check progress while waiting for an app to launch. 100 static final int LAUNCH_TICK = 500; 101 102 // How long we wait until giving up on the last activity to pause. This 103 // is short because it directly impacts the responsiveness of starting the 104 // next activity. 105 static final int PAUSE_TIMEOUT = 500; 106 107 // How long we wait for the activity to tell us it has stopped before 108 // giving up. This is a good amount of time because we really need this 109 // from the application in order to get its saved state. 110 static final int STOP_TIMEOUT = 10*1000; 111 112 // How long we wait until giving up on an activity telling us it has 113 // finished destroying itself. 114 static final int DESTROY_TIMEOUT = 10*1000; 115 116 // How long until we reset a task when the user returns to it. Currently 117 // disabled. 118 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 119 120 // How long between activity launches that we consider safe to not warn 121 // the user about an unexpected activity being launched on top. 122 static final long START_WARN_TIME = 5*1000; 123 124 // Set to false to disable the preview that is shown while a new activity 125 // is being started. 126 static final boolean SHOW_APP_STARTING_PREVIEW = true; 127 128 // How long to wait for all background Activities to redraw following a call to 129 // convertToTranslucent(). 130 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 131 132 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 133 134 enum ActivityState { 135 INITIALIZING, 136 RESUMED, 137 PAUSING, 138 PAUSED, 139 STOPPING, 140 STOPPED, 141 FINISHING, 142 DESTROYING, 143 DESTROYED 144 } 145 146 final ActivityManagerService mService; 147 final WindowManagerService mWindowManager; 148 149 /** 150 * The back history of all previous (and possibly still 151 * running) activities. It contains #TaskRecord objects. 152 */ 153 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 154 155 /** 156 * Used for validating app tokens with window manager. 157 */ 158 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 159 160 /** 161 * List of running activities, sorted by recent usage. 162 * The first entry in the list is the least recently used. 163 * It contains HistoryRecord objects. 164 */ 165 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 166 167 /** 168 * Animations that for the current transition have requested not to 169 * be considered for the transition animation. 170 */ 171 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 172 173 /** 174 * When we are in the process of pausing an activity, before starting the 175 * next one, this variable holds the activity that is currently being paused. 176 */ 177 ActivityRecord mPausingActivity = null; 178 179 /** 180 * This is the last activity that we put into the paused state. This is 181 * used to determine if we need to do an activity transition while sleeping, 182 * when we normally hold the top activity paused. 183 */ 184 ActivityRecord mLastPausedActivity = null; 185 186 /** 187 * Activities that specify No History must be removed once the user navigates away from them. 188 * If the device goes to sleep with such an activity in the paused state then we save it here 189 * and finish it later if another activity replaces it on wakeup. 190 */ 191 ActivityRecord mLastNoHistoryActivity = null; 192 193 /** 194 * Current activity that is resumed, or null if there is none. 195 */ 196 ActivityRecord mResumedActivity = null; 197 198 /** 199 * This is the last activity that has been started. It is only used to 200 * identify when multiple activities are started at once so that the user 201 * can be warned they may not be in the activity they think they are. 202 */ 203 ActivityRecord mLastStartedActivity = null; 204 205 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 206 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 207 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 208 // Activity in mTranslucentActivityWaiting is notified via 209 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 210 // background activity being drawn then the same call will be made with a true value. 211 ActivityRecord mTranslucentActivityWaiting = null; 212 private ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 213 new ArrayList<ActivityRecord>(); 214 // Options passed from the caller of the convertToTranslucent to the activity that will 215 // appear below it. 216 ActivityOptions mReturningActivityOptions = null; 217 218 /** 219 * Set when we know we are going to be calling updateConfiguration() 220 * soon, so want to skip intermediate config checks. 221 */ 222 boolean mConfigWillChange; 223 224 long mLaunchStartTime = 0; 225 long mFullyDrawnStartTime = 0; 226 227 /** 228 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 229 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 230 */ 231 private ActivityRecord mLastScreenshotActivity = null; 232 private Bitmap mLastScreenshotBitmap = null; 233 234 int mThumbnailWidth = -1; 235 int mThumbnailHeight = -1; 236 237 int mCurrentUser; 238 239 final int mStackId; 240 final ActivityContainer mActivityContainer; 241 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 242 ArrayList<ActivityStack> mStacks; 243 /** The attached Display's unique identifier, or -1 if detached */ 244 int mDisplayId; 245 246 /** Run all ActivityStacks through this */ 247 final ActivityStackSupervisor mStackSupervisor; 248 249 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 250 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 251 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 252 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 253 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 254 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 255 static final int STOP_MEDIA_PLAYING_TIMEOUT_MSG = 256 ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 7; 257 258 static class ScheduleDestroyArgs { 259 final ProcessRecord mOwner; 260 final String mReason; 261 ScheduleDestroyArgs(ProcessRecord owner, String reason) { 262 mOwner = owner; 263 mReason = reason; 264 } 265 } 266 267 final Handler mHandler; 268 269 final class ActivityStackHandler extends Handler { 270 //public Handler() { 271 // if (localLOGV) Slog.v(TAG, "Handler started!"); 272 //} 273 ActivityStackHandler(Looper looper) { 274 super(looper); 275 } 276 277 @Override 278 public void handleMessage(Message msg) { 279 switch (msg.what) { 280 case PAUSE_TIMEOUT_MSG: { 281 ActivityRecord r = (ActivityRecord)msg.obj; 282 // We don't at this point know if the activity is fullscreen, 283 // so we need to be conservative and assume it isn't. 284 Slog.w(TAG, "Activity pause timeout for " + r); 285 synchronized (mService) { 286 if (r.app != null) { 287 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 288 } 289 activityPausedLocked(r.appToken, true, r.persistentState); 290 } 291 } break; 292 case LAUNCH_TICK_MSG: { 293 ActivityRecord r = (ActivityRecord)msg.obj; 294 synchronized (mService) { 295 if (r.continueLaunchTickingLocked()) { 296 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 297 } 298 } 299 } break; 300 case DESTROY_TIMEOUT_MSG: { 301 ActivityRecord r = (ActivityRecord)msg.obj; 302 // We don't at this point know if the activity is fullscreen, 303 // so we need to be conservative and assume it isn't. 304 Slog.w(TAG, "Activity destroy timeout for " + r); 305 synchronized (mService) { 306 activityDestroyedLocked(r != null ? r.appToken : null); 307 } 308 } break; 309 case STOP_TIMEOUT_MSG: { 310 ActivityRecord r = (ActivityRecord)msg.obj; 311 // We don't at this point know if the activity is fullscreen, 312 // so we need to be conservative and assume it isn't. 313 Slog.w(TAG, "Activity stop timeout for " + r); 314 synchronized (mService) { 315 if (r.isInHistory()) { 316 activityStoppedLocked(r, null, null, null); 317 } 318 } 319 } break; 320 case DESTROY_ACTIVITIES_MSG: { 321 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 322 synchronized (mService) { 323 destroyActivitiesLocked(args.mOwner, args.mReason); 324 } 325 } break; 326 case TRANSLUCENT_TIMEOUT_MSG: { 327 synchronized (mService) { 328 notifyActivityDrawnLocked(null); 329 } 330 } break; 331 case STOP_MEDIA_PLAYING_TIMEOUT_MSG: { 332 synchronized (mService) { 333 final ActivityRecord r = getMediaPlayer(); 334 Slog.e(TAG, "Timeout waiting for stopMediaPlaying player=" + r); 335 if (r != null) { 336 mService.killAppAtUsersRequest(r.app, null); 337 } 338 } 339 } break; 340 } 341 } 342 } 343 344 int numActivities() { 345 int count = 0; 346 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 347 count += mTaskHistory.get(taskNdx).mActivities.size(); 348 } 349 return count; 350 } 351 352 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 353 mActivityContainer = activityContainer; 354 mStackSupervisor = activityContainer.getOuter(); 355 mService = mStackSupervisor.mService; 356 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 357 mWindowManager = mService.mWindowManager; 358 mStackId = activityContainer.mStackId; 359 mCurrentUser = mService.mCurrentUserId; 360 // Get the activity screenshot thumbnail dimensions 361 Resources res = mService.mContext.getResources(); 362 mThumbnailWidth = res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 363 mThumbnailHeight = res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 364 } 365 366 /** 367 * Checks whether the userid is a profile of the current user. 368 */ 369 private boolean isCurrentProfileLocked(int userId) { 370 if (userId == mCurrentUser) return true; 371 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 372 if (mService.mCurrentProfileIds[i] == userId) return true; 373 } 374 return false; 375 } 376 377 boolean okToShowLocked(ActivityRecord r) { 378 return isCurrentProfileLocked(r.userId) 379 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 380 } 381 382 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 383 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 384 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 385 if (r != null) { 386 return r; 387 } 388 } 389 return null; 390 } 391 392 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 393 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 394 final TaskRecord task = mTaskHistory.get(taskNdx); 395 final ArrayList<ActivityRecord> activities = task.mActivities; 396 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 397 ActivityRecord r = activities.get(activityNdx); 398 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 399 return r; 400 } 401 } 402 } 403 return null; 404 } 405 406 /** 407 * This is a simplified version of topRunningActivityLocked that provides a number of 408 * optional skip-over modes. It is intended for use with the ActivityController hook only. 409 * 410 * @param token If non-null, any history records matching this token will be skipped. 411 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 412 * 413 * @return Returns the HistoryRecord of the next activity on the stack. 414 */ 415 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 416 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 417 TaskRecord task = mTaskHistory.get(taskNdx); 418 if (task.taskId == taskId) { 419 continue; 420 } 421 ArrayList<ActivityRecord> activities = task.mActivities; 422 for (int i = activities.size() - 1; i >= 0; --i) { 423 final ActivityRecord r = activities.get(i); 424 // Note: the taskId check depends on real taskId fields being non-zero 425 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 426 return r; 427 } 428 } 429 } 430 return null; 431 } 432 433 final ActivityRecord topActivity() { 434 // Iterate to find the first non-empty task stack. Note that this code can 435 // be simplified once we stop storing tasks with empty mActivities lists. 436 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 437 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 438 final int topActivityNdx = activities.size() - 1; 439 if (topActivityNdx >= 0) { 440 return activities.get(topActivityNdx); 441 } 442 } 443 return null; 444 } 445 446 final TaskRecord topTask() { 447 final int size = mTaskHistory.size(); 448 if (size > 0) { 449 return mTaskHistory.get(size - 1); 450 } 451 return null; 452 } 453 454 TaskRecord taskForIdLocked(int id) { 455 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 456 final TaskRecord task = mTaskHistory.get(taskNdx); 457 if (task.taskId == id) { 458 return task; 459 } 460 } 461 return null; 462 } 463 464 ActivityRecord isInStackLocked(IBinder token) { 465 final ActivityRecord r = ActivityRecord.forToken(token); 466 if (r != null) { 467 final TaskRecord task = r.task; 468 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 469 if (task.stack != this) Slog.w(TAG, 470 "Illegal state! task does not point to stack it is in."); 471 return r; 472 } 473 } 474 return null; 475 } 476 477 final boolean updateLRUListLocked(ActivityRecord r) { 478 final boolean hadit = mLRUActivities.remove(r); 479 mLRUActivities.add(r); 480 return hadit; 481 } 482 483 final boolean isHomeStack() { 484 return mStackId == HOME_STACK_ID; 485 } 486 487 final boolean isOnHomeDisplay() { 488 return isAttached() && 489 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 490 } 491 492 final void moveToFront() { 493 if (isAttached()) { 494 if (isOnHomeDisplay()) { 495 mStackSupervisor.moveHomeStack(isHomeStack()); 496 } 497 mStacks.remove(this); 498 mStacks.add(this); 499 } 500 } 501 502 final boolean isAttached() { 503 return mStacks != null; 504 } 505 506 /** 507 * Returns the top activity in any existing task matching the given 508 * Intent. Returns null if no such task is found. 509 */ 510 ActivityRecord findTaskLocked(ActivityRecord target) { 511 Intent intent = target.intent; 512 ActivityInfo info = target.info; 513 ComponentName cls = intent.getComponent(); 514 if (info.targetActivity != null) { 515 cls = new ComponentName(info.packageName, info.targetActivity); 516 } 517 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 518 boolean isDocument = intent != null & intent.isDocument(); 519 // If documentData is non-null then it must match the existing task data. 520 Uri documentData = isDocument ? intent.getData() : null; 521 522 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 523 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 524 final TaskRecord task = mTaskHistory.get(taskNdx); 525 if (task.voiceSession != null) { 526 // We never match voice sessions; those always run independently. 527 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 528 continue; 529 } 530 if (task.userId != userId) { 531 // Looking for a different task. 532 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 533 continue; 534 } 535 final ActivityRecord r = task.getTopActivity(); 536 if (r == null || r.finishing || r.userId != userId || 537 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 538 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 539 continue; 540 } 541 542 final Intent taskIntent = task.intent; 543 final Intent affinityIntent = task.affinityIntent; 544 final boolean taskIsDocument; 545 final Uri taskDocumentData; 546 if (taskIntent != null && taskIntent.isDocument()) { 547 taskIsDocument = true; 548 taskDocumentData = taskIntent.getData(); 549 } else if (affinityIntent != null && affinityIntent.isDocument()) { 550 taskIsDocument = true; 551 taskDocumentData = affinityIntent.getData(); 552 } else { 553 taskIsDocument = false; 554 taskDocumentData = null; 555 } 556 557 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 558 + taskIntent.getComponent().flattenToShortString() 559 + "/aff=" + r.task.affinity + " to new cls=" 560 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 561 if (!isDocument && !taskIsDocument && task.affinity != null) { 562 if (task.affinity.equals(target.taskAffinity)) { 563 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 564 return r; 565 } 566 } else if (taskIntent != null && taskIntent.getComponent() != null && 567 taskIntent.getComponent().compareTo(cls) == 0 && 568 Objects.equals(documentData, taskDocumentData)) { 569 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 570 //dump(); 571 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 572 + r.intent); 573 return r; 574 } else if (affinityIntent != null && affinityIntent.getComponent() != null && 575 affinityIntent.getComponent().compareTo(cls) == 0 && 576 Objects.equals(documentData, taskDocumentData)) { 577 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 578 //dump(); 579 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 580 + r.intent); 581 return r; 582 } else if (DEBUG_TASKS) { 583 Slog.d(TAG, "Not a match: " + task); 584 } 585 } 586 587 return null; 588 } 589 590 /** 591 * Returns the first activity (starting from the top of the stack) that 592 * is the same as the given activity. Returns null if no such activity 593 * is found. 594 */ 595 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 596 ComponentName cls = intent.getComponent(); 597 if (info.targetActivity != null) { 598 cls = new ComponentName(info.packageName, info.targetActivity); 599 } 600 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 601 602 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 603 TaskRecord task = mTaskHistory.get(taskNdx); 604 if (!isCurrentProfileLocked(task.userId)) { 605 return null; 606 } 607 final ArrayList<ActivityRecord> activities = task.mActivities; 608 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 609 ActivityRecord r = activities.get(activityNdx); 610 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 611 //Slog.i(TAG, "Found matching class!"); 612 //dump(); 613 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 614 return r; 615 } 616 } 617 } 618 619 return null; 620 } 621 622 /* 623 * Move the activities around in the stack to bring a user to the foreground. 624 */ 625 final void switchUserLocked(int userId) { 626 if (mCurrentUser == userId) { 627 return; 628 } 629 mCurrentUser = userId; 630 631 // Move userId's tasks to the top. 632 int index = mTaskHistory.size(); 633 for (int i = 0; i < index; ) { 634 TaskRecord task = mTaskHistory.get(i); 635 if (isCurrentProfileLocked(task.userId)) { 636 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 637 " moving " + task + " to top"); 638 mTaskHistory.remove(i); 639 mTaskHistory.add(task); 640 --index; 641 // Use same value for i. 642 } else { 643 ++i; 644 } 645 } 646 if (VALIDATE_TOKENS) { 647 validateAppTokensLocked(); 648 } 649 } 650 651 void minimalResumeActivityLocked(ActivityRecord r) { 652 r.state = ActivityState.RESUMED; 653 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 654 + " (starting new instance)"); 655 r.stopped = false; 656 mResumedActivity = r; 657 r.task.touchActiveTime(); 658 mService.addRecentTaskLocked(r.task); 659 completeResumeLocked(r); 660 mStackSupervisor.checkReadyForSleepLocked(); 661 setLaunchTime(r); 662 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 663 } 664 665 private void startLaunchTraces() { 666 if (mFullyDrawnStartTime != 0) { 667 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 668 } 669 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 670 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 671 } 672 673 private void stopFullyDrawnTraceIfNeeded() { 674 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 675 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 676 mFullyDrawnStartTime = 0; 677 } 678 } 679 680 void setLaunchTime(ActivityRecord r) { 681 if (r.displayStartTime == 0) { 682 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 683 if (mLaunchStartTime == 0) { 684 startLaunchTraces(); 685 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 686 } 687 } else if (mLaunchStartTime == 0) { 688 startLaunchTraces(); 689 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 690 } 691 } 692 693 void clearLaunchTime(ActivityRecord r) { 694 // Make sure that there is no activity waiting for this to launch. 695 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 696 r.displayStartTime = r.fullyDrawnStartTime = 0; 697 } else { 698 mStackSupervisor.removeTimeoutsForActivityLocked(r); 699 mStackSupervisor.scheduleIdleTimeoutLocked(r); 700 } 701 } 702 703 void awakeFromSleepingLocked() { 704 // Ensure activities are no longer sleeping. 705 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 706 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 707 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 708 activities.get(activityNdx).setSleeping(false); 709 } 710 } 711 } 712 713 /** 714 * @return true if something must be done before going to sleep. 715 */ 716 boolean checkReadyForSleepLocked() { 717 if (mResumedActivity != null) { 718 // Still have something resumed; can't sleep until it is paused. 719 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 720 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 721 startPausingLocked(false, true); 722 return true; 723 } 724 if (mPausingActivity != null) { 725 // Still waiting for something to pause; can't sleep yet. 726 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 727 return true; 728 } 729 730 return false; 731 } 732 733 void goToSleep() { 734 ensureActivitiesVisibleLocked(null, 0); 735 736 // Make sure any stopped but visible activities are now sleeping. 737 // This ensures that the activity's onStop() is called. 738 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 739 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 740 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 741 final ActivityRecord r = activities.get(activityNdx); 742 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 743 r.setSleeping(true); 744 } 745 } 746 } 747 } 748 749 /** 750 * This resets the saved state from the last screenshot, forcing a new screenshot to be taken 751 * again when requested. 752 */ 753 private void invalidateLastScreenshot() { 754 mLastScreenshotActivity = null; 755 if (mLastScreenshotBitmap != null) { 756 mLastScreenshotBitmap.recycle(); 757 } 758 mLastScreenshotBitmap = null; 759 } 760 761 public final Bitmap screenshotActivities(ActivityRecord who) { 762 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "screenshotActivities: " + who); 763 if (who.noDisplay) { 764 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tNo display"); 765 return null; 766 } 767 768 if (isHomeStack()) { 769 // This is an optimization -- since we never show Home or Recents within Recents itself, 770 // we can just go ahead and skip taking the screenshot if this is the home stack. In 771 // the case where the most recent task is not the task that was supplied, then the stack 772 // has changed, so invalidate the last screenshot(). 773 invalidateLastScreenshot(); 774 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tIs Home stack? " + isHomeStack()); 775 return null; 776 } 777 778 int w = mThumbnailWidth; 779 int h = mThumbnailHeight; 780 if (w > 0) { 781 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 782 || mLastScreenshotActivity.state == ActivityState.RESUMED 783 || mLastScreenshotBitmap.getWidth() != w 784 || mLastScreenshotBitmap.getHeight() != h) { 785 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tUpdating screenshot"); 786 mLastScreenshotActivity = who; 787 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 788 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 789 } 790 if (mLastScreenshotBitmap != null) { 791 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tReusing last screenshot"); 792 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 793 } 794 } 795 Slog.e(TAG, "Invalid thumbnail dimensions: " + w + "x" + h); 796 return null; 797 } 798 799 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 800 if (mPausingActivity != null) { 801 Slog.e(TAG, "Trying to pause when pause is already pending for " 802 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 803 } 804 ActivityRecord prev = mResumedActivity; 805 if (prev == null) { 806 Slog.e(TAG, "Trying to pause when nothing is resumed", 807 new RuntimeException("here").fillInStackTrace()); 808 mStackSupervisor.resumeTopActivitiesLocked(); 809 return; 810 } 811 812 if (mActivityContainer.mParentActivity == null) { 813 // Top level stack, not a child. Look for child stacks. 814 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 815 } 816 817 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 818 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 819 mResumedActivity = null; 820 mPausingActivity = prev; 821 mLastPausedActivity = prev; 822 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 823 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 824 prev.state = ActivityState.PAUSING; 825 prev.task.touchActiveTime(); 826 clearLaunchTime(prev); 827 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 828 if (next == null || next.noDisplay || next.task != prev.task) { 829 prev.updateThumbnail(screenshotActivities(prev), null); 830 } 831 stopFullyDrawnTraceIfNeeded(); 832 833 mService.updateCpuStats(); 834 835 if (prev.app != null && prev.app.thread != null) { 836 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 837 try { 838 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 839 prev.userId, System.identityHashCode(prev), 840 prev.shortComponentName); 841 mService.updateUsageStats(prev, false); 842 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 843 userLeaving, prev.configChangeFlags); 844 } catch (Exception e) { 845 // Ignore exception, if process died other code will cleanup. 846 Slog.w(TAG, "Exception thrown during pause", e); 847 mPausingActivity = null; 848 mLastPausedActivity = null; 849 mLastNoHistoryActivity = null; 850 } 851 } else { 852 mPausingActivity = null; 853 mLastPausedActivity = null; 854 mLastNoHistoryActivity = null; 855 } 856 857 // If we are not going to sleep, we want to ensure the device is 858 // awake until the next activity is started. 859 if (!mService.isSleepingOrShuttingDown()) { 860 mStackSupervisor.acquireLaunchWakelock(); 861 } 862 863 if (mPausingActivity != null) { 864 // Have the window manager pause its key dispatching until the new 865 // activity has started. If we're pausing the activity just because 866 // the screen is being turned off and the UI is sleeping, don't interrupt 867 // key dispatch; the same activity will pick it up again on wakeup. 868 if (!uiSleeping) { 869 prev.pauseKeyDispatchingLocked(); 870 } else { 871 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 872 } 873 874 // Schedule a pause timeout in case the app doesn't respond. 875 // We don't give it much time because this directly impacts the 876 // responsiveness seen by the user. 877 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 878 msg.obj = prev; 879 prev.pauseTime = SystemClock.uptimeMillis(); 880 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 881 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 882 } else { 883 // This activity failed to schedule the 884 // pause, so just treat it as being paused now. 885 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 886 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 887 } 888 } 889 890 final void activityPausedLocked(IBinder token, boolean timeout, 891 PersistableBundle persistentState) { 892 if (DEBUG_PAUSE) Slog.v( 893 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 894 895 final ActivityRecord r = isInStackLocked(token); 896 if (r != null) { 897 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 898 if (persistentState != null) { 899 r.persistentState = persistentState; 900 mService.notifyTaskPersisterLocked(r.task, false); 901 } 902 if (mPausingActivity == r) { 903 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 904 + (timeout ? " (due to timeout)" : " (pause complete)")); 905 r.state = ActivityState.PAUSED; 906 completePauseLocked(); 907 } else { 908 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 909 r.userId, System.identityHashCode(r), r.shortComponentName, 910 mPausingActivity != null 911 ? mPausingActivity.shortComponentName : "(none)"); 912 } 913 } 914 } 915 916 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, 917 PersistableBundle persistentState, CharSequence description) { 918 if (r.state != ActivityState.STOPPING) { 919 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 920 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 921 return; 922 } 923 if (persistentState != null) { 924 r.persistentState = persistentState; 925 mService.notifyTaskPersisterLocked(r.task, false); 926 } 927 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 928 if (icicle != null) { 929 // If icicle is null, this is happening due to a timeout, so we 930 // haven't really saved the state. 931 r.icicle = icicle; 932 r.haveState = true; 933 r.launchCount = 0; 934 r.updateThumbnail(null, description); 935 } 936 if (!r.stopped) { 937 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 938 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 939 r.stopped = true; 940 r.state = ActivityState.STOPPED; 941 if (mActivityContainer.mActivityDisplay.mMediaPlayingActivity == r) { 942 mStackSupervisor.setMediaPlayingLocked(r, false); 943 } 944 if (r.finishing) { 945 r.clearOptionsLocked(); 946 } else { 947 if (r.configDestroy) { 948 destroyActivityLocked(r, true, "stop-config"); 949 mStackSupervisor.resumeTopActivitiesLocked(); 950 } else { 951 mStackSupervisor.updatePreviousProcessLocked(r); 952 } 953 } 954 } 955 } 956 957 private void completePauseLocked() { 958 ActivityRecord prev = mPausingActivity; 959 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 960 961 if (prev != null) { 962 if (prev.finishing) { 963 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 964 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 965 } else if (prev.app != null) { 966 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 967 if (prev.waitingVisible) { 968 prev.waitingVisible = false; 969 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 970 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 971 TAG, "Complete pause, no longer waiting: " + prev); 972 } 973 if (prev.configDestroy) { 974 // The previous is being paused because the configuration 975 // is changing, which means it is actually stopping... 976 // To juggle the fact that we are also starting a new 977 // instance right now, we need to first completely stop 978 // the current instance before starting the new one. 979 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 980 destroyActivityLocked(prev, true, "pause-config"); 981 } else if (!isMediaPlaying()) { 982 // If we were playing then resumeTopActivities will release resources before 983 // stopping. 984 mStackSupervisor.mStoppingActivities.add(prev); 985 if (mStackSupervisor.mStoppingActivities.size() > 3 || 986 prev.frontOfTask && mTaskHistory.size() <= 1) { 987 // If we already have a few activities waiting to stop, 988 // then give up on things going idle and start clearing 989 // them out. Or if r is the last of activity of the last task the stack 990 // will be empty and must be cleared immediately. 991 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 992 mStackSupervisor.scheduleIdleLocked(); 993 } else { 994 mStackSupervisor.checkReadyForSleepLocked(); 995 } 996 } 997 } else { 998 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 999 prev = null; 1000 } 1001 mPausingActivity = null; 1002 } 1003 1004 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 1005 if (!mService.isSleepingOrShuttingDown()) { 1006 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 1007 } else { 1008 mStackSupervisor.checkReadyForSleepLocked(); 1009 ActivityRecord top = topStack.topRunningActivityLocked(null); 1010 if (top == null || (prev != null && top != prev)) { 1011 // If there are no more activities available to run, 1012 // do resume anyway to start something. Also if the top 1013 // activity on the stack is not the just paused activity, 1014 // we need to go ahead and resume it to ensure we complete 1015 // an in-flight app switch. 1016 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 1017 } 1018 } 1019 1020 if (prev != null) { 1021 prev.resumeKeyDispatchingLocked(); 1022 1023 if (prev.app != null && prev.cpuTimeAtResume > 0 1024 && mService.mBatteryStatsService.isOnBattery()) { 1025 long diff; 1026 synchronized (mService.mProcessCpuThread) { 1027 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 1028 - prev.cpuTimeAtResume; 1029 } 1030 if (diff > 0) { 1031 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 1032 synchronized (bsi) { 1033 BatteryStatsImpl.Uid.Proc ps = 1034 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 1035 prev.info.packageName); 1036 if (ps != null) { 1037 ps.addForegroundTimeLocked(diff); 1038 } 1039 } 1040 } 1041 } 1042 prev.cpuTimeAtResume = 0; // reset it 1043 } 1044 } 1045 1046 /** 1047 * Once we know that we have asked an application to put an activity in 1048 * the resumed state (either by launching it or explicitly telling it), 1049 * this function updates the rest of our state to match that fact. 1050 */ 1051 private void completeResumeLocked(ActivityRecord next) { 1052 next.idle = false; 1053 next.results = null; 1054 next.newIntents = null; 1055 if (next.nowVisible) { 1056 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1057 mStackSupervisor.dismissKeyguard(); 1058 } 1059 1060 // schedule an idle timeout in case the app doesn't do it for us. 1061 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1062 1063 mStackSupervisor.reportResumedActivityLocked(next); 1064 1065 next.resumeKeyDispatchingLocked(); 1066 mNoAnimActivities.clear(); 1067 1068 // Mark the point when the activity is resuming 1069 // TODO: To be more accurate, the mark should be before the onCreate, 1070 // not after the onResume. But for subsequent starts, onResume is fine. 1071 if (next.app != null) { 1072 synchronized (mService.mProcessCpuThread) { 1073 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1074 } 1075 } else { 1076 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1077 } 1078 1079 // If we are resuming the activity that we had last screenshotted, then we know it will be 1080 // updated, so invalidate the last screenshot to ensure we take a fresh one when requested 1081 if (next == mLastScreenshotActivity) { 1082 invalidateLastScreenshot(); 1083 } 1084 } 1085 1086 private void setVisibile(ActivityRecord r, boolean visible) { 1087 r.visible = visible; 1088 mWindowManager.setAppVisibility(r.appToken, visible); 1089 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1090 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1091 ActivityContainer container = containers.get(containerNdx); 1092 container.setVisible(visible); 1093 } 1094 } 1095 1096 // Checks if any of the stacks above this one has a fullscreen activity behind it. 1097 // If so, this stack is hidden, otherwise it is visible. 1098 private boolean isStackVisible() { 1099 if (!isAttached()) { 1100 return false; 1101 } 1102 1103 if (mStackSupervisor.isFrontStack(this)) { 1104 return true; 1105 } 1106 1107 /** 1108 * Start at the task above this one and go up, looking for a visible 1109 * fullscreen activity, or a translucent activity that requested the 1110 * wallpaper to be shown behind it. 1111 */ 1112 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) { 1113 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks(); 1114 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) { 1115 final TaskRecord task = tasks.get(taskNdx); 1116 final ArrayList<ActivityRecord> activities = task.mActivities; 1117 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) { 1118 final ActivityRecord r = activities.get(activityNdx); 1119 1120 // Conditions for an activity to obscure the stack we're 1121 // examining: 1122 // 1. Not Finishing AND Visible AND: 1123 // 2. Either: 1124 // - Full Screen Activity OR 1125 // - On top of Home and our stack is NOT home 1126 if (!r.finishing && r.visible && (r.fullscreen || 1127 (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()))) { 1128 return false; 1129 } 1130 } 1131 } 1132 } 1133 1134 return true; 1135 } 1136 1137 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1138 ActivityRecord r = topRunningActivityLocked(null); 1139 if (r != null) { 1140 ensureActivitiesVisibleLocked(r, starting, null, configChanges); 1141 } 1142 } 1143 1144 /** 1145 * Make sure that all activities that need to be visible (that is, they 1146 * currently can be seen by the user) actually are. 1147 */ 1148 final void ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1149 String onlyThisProcess, int configChanges) { 1150 if (DEBUG_VISBILITY) Slog.v( 1151 TAG, "ensureActivitiesVisible behind " + top 1152 + " configChanges=0x" + Integer.toHexString(configChanges)); 1153 1154 if (mTranslucentActivityWaiting != top) { 1155 mUndrawnActivitiesBelowTopTranslucent.clear(); 1156 if (mTranslucentActivityWaiting != null) { 1157 // Call the callback with a timeout indication. 1158 notifyActivityDrawnLocked(null); 1159 mTranslucentActivityWaiting = null; 1160 } 1161 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1162 } 1163 1164 // If the top activity is not fullscreen, then we need to 1165 // make sure any activities under it are now visible. 1166 boolean aboveTop = true; 1167 boolean behindFullscreen = !isStackVisible(); 1168 1169 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1170 final TaskRecord task = mTaskHistory.get(taskNdx); 1171 final ArrayList<ActivityRecord> activities = task.mActivities; 1172 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1173 final ActivityRecord r = activities.get(activityNdx); 1174 if (r.finishing) { 1175 continue; 1176 } 1177 if (aboveTop && r != top) { 1178 continue; 1179 } 1180 aboveTop = false; 1181 if (!behindFullscreen) { 1182 if (DEBUG_VISBILITY) Slog.v( 1183 TAG, "Make visible? " + r + " finishing=" + r.finishing 1184 + " state=" + r.state); 1185 1186 final boolean doThisProcess = onlyThisProcess == null 1187 || onlyThisProcess.equals(r.processName); 1188 1189 // First: if this is not the current activity being started, make 1190 // sure it matches the current configuration. 1191 if (r != starting && doThisProcess) { 1192 ensureActivityConfigurationLocked(r, 0); 1193 } 1194 1195 if (r.app == null || r.app.thread == null) { 1196 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1197 // This activity needs to be visible, but isn't even 1198 // running... get it started, but don't resume it 1199 // at this point. 1200 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1201 if (r != starting) { 1202 r.startFreezingScreenLocked(r.app, configChanges); 1203 } 1204 if (!r.visible) { 1205 if (DEBUG_VISBILITY) Slog.v( 1206 TAG, "Starting and making visible: " + r); 1207 setVisibile(r, true); 1208 } 1209 if (r != starting) { 1210 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1211 } 1212 } 1213 1214 } else if (r.visible) { 1215 // If this activity is already visible, then there is nothing 1216 // else to do here. 1217 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1218 r.stopFreezingScreenLocked(false); 1219 try { 1220 if (mReturningActivityOptions != null) { 1221 if (activityNdx > 0) { 1222 ActivityRecord under = activities.get(activityNdx - 1); 1223 under.app.thread.scheduleOnNewActivityOptions(under.appToken, 1224 mReturningActivityOptions); 1225 } 1226 mReturningActivityOptions = null; 1227 } 1228 } catch(RemoteException e) { 1229 } 1230 } else if (onlyThisProcess == null) { 1231 // This activity is not currently visible, but is running. 1232 // Tell it to become visible. 1233 r.visible = true; 1234 if (r.state != ActivityState.RESUMED && r != starting) { 1235 // If this activity is paused, tell it 1236 // to now show its window. 1237 if (DEBUG_VISBILITY) Slog.v( 1238 TAG, "Making visible and scheduling visibility: " + r); 1239 try { 1240 if (mTranslucentActivityWaiting != null) { 1241 r.updateOptionsLocked(mReturningActivityOptions); 1242 mUndrawnActivitiesBelowTopTranslucent.add(r); 1243 } 1244 setVisibile(r, true); 1245 r.sleeping = false; 1246 r.app.pendingUiClean = true; 1247 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1248 r.stopFreezingScreenLocked(false); 1249 } catch (Exception e) { 1250 // Just skip on any failure; we'll make it 1251 // visible when it next restarts. 1252 Slog.w(TAG, "Exception thrown making visibile: " 1253 + r.intent.getComponent(), e); 1254 } 1255 } 1256 } 1257 1258 // Aggregate current change flags. 1259 configChanges |= r.configChangeFlags; 1260 1261 if (r.fullscreen) { 1262 // At this point, nothing else needs to be shown 1263 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1264 behindFullscreen = true; 1265 } else if (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()) { 1266 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1267 behindFullscreen = true; 1268 } 1269 } else { 1270 if (DEBUG_VISBILITY) Slog.v( 1271 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1272 + " state=" + r.state 1273 + " behindFullscreen=" + behindFullscreen); 1274 // Now for any activities that aren't visible to the user, make 1275 // sure they no longer are keeping the screen frozen. 1276 if (r.visible) { 1277 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1278 try { 1279 setVisibile(r, false); 1280 switch (r.state) { 1281 case STOPPING: 1282 case STOPPED: 1283 if (r.app != null && r.app.thread != null) { 1284 if (DEBUG_VISBILITY) Slog.v( 1285 TAG, "Scheduling invisibility: " + r); 1286 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1287 } 1288 break; 1289 1290 case INITIALIZING: 1291 case RESUMED: 1292 case PAUSING: 1293 case PAUSED: 1294 // This case created for transitioning activities from 1295 // translucent to opaque {@link Activity#convertToOpaque}. 1296 if (getMediaPlayer() == r) { 1297 releaseMediaResources(); 1298 } else { 1299 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1300 mStackSupervisor.mStoppingActivities.add(r); 1301 } 1302 mStackSupervisor.scheduleIdleLocked(); 1303 } 1304 break; 1305 1306 default: 1307 break; 1308 } 1309 } catch (Exception e) { 1310 // Just skip on any failure; we'll make it 1311 // visible when it next restarts. 1312 Slog.w(TAG, "Exception thrown making hidden: " 1313 + r.intent.getComponent(), e); 1314 } 1315 } else { 1316 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1317 } 1318 } 1319 } 1320 } 1321 1322 if (mTranslucentActivityWaiting != null && 1323 mUndrawnActivitiesBelowTopTranslucent.isEmpty()) { 1324 // Nothing is getting drawn or everything was already visible, don't wait for timeout. 1325 notifyActivityDrawnLocked(null); 1326 } 1327 } 1328 1329 void convertToTranslucent(ActivityRecord r, ActivityOptions options) { 1330 mTranslucentActivityWaiting = r; 1331 mUndrawnActivitiesBelowTopTranslucent.clear(); 1332 mReturningActivityOptions = options; 1333 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1334 } 1335 1336 /** 1337 * Called as activities below the top translucent activity are redrawn. When the last one is 1338 * redrawn notify the top activity by calling 1339 * {@link Activity#onTranslucentConversionComplete}. 1340 * 1341 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1342 * occurred and the activity will be notified immediately. 1343 */ 1344 void notifyActivityDrawnLocked(ActivityRecord r) { 1345 mActivityContainer.setDrawn(); 1346 if ((r == null) 1347 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1348 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1349 // The last undrawn activity below the top has just been drawn. If there is an 1350 // opaque activity at the top, notify it that it can become translucent safely now. 1351 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1352 mTranslucentActivityWaiting = null; 1353 mUndrawnActivitiesBelowTopTranslucent.clear(); 1354 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1355 1356 if (waitingActivity != null) { 1357 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1358 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1359 try { 1360 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1361 waitingActivity.appToken, r != null); 1362 } catch (RemoteException e) { 1363 } 1364 } 1365 } 1366 } 1367 } 1368 1369 /** If any activities below the top running one are in the INITIALIZING state and they have a 1370 * starting window displayed then remove that starting window. It is possible that the activity 1371 * in this state will never resumed in which case that starting window will be orphaned. */ 1372 void cancelInitializingActivities() { 1373 final ActivityRecord topActivity = topRunningActivityLocked(null); 1374 boolean aboveTop = true; 1375 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1376 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1377 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1378 final ActivityRecord r = activities.get(activityNdx); 1379 if (aboveTop) { 1380 if (r == topActivity) { 1381 aboveTop = false; 1382 } 1383 continue; 1384 } 1385 1386 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1387 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1388 r.mStartingWindowShown = false; 1389 mWindowManager.removeAppStartingWindow(r.appToken); 1390 } 1391 } 1392 } 1393 } 1394 1395 /** 1396 * Ensure that the top activity in the stack is resumed. 1397 * 1398 * @param prev The previously resumed activity, for when in the process 1399 * of pausing; can be null to call from elsewhere. 1400 * 1401 * @return Returns true if something is being resumed, or false if 1402 * nothing happened. 1403 */ 1404 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1405 return resumeTopActivityLocked(prev, null); 1406 } 1407 1408 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1409 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1410 1411 ActivityRecord parent = mActivityContainer.mParentActivity; 1412 if ((parent != null && parent.state != ActivityState.RESUMED) || 1413 !mActivityContainer.isAttachedLocked()) { 1414 // Do not resume this stack if its parent is not resumed. 1415 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1416 return false; 1417 } 1418 1419 cancelInitializingActivities(); 1420 1421 // Find the first activity that is not finishing. 1422 ActivityRecord next = topRunningActivityLocked(null); 1423 1424 // Remember how we'll process this pause/resume situation, and ensure 1425 // that the state is reset however we wind up proceeding. 1426 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1427 mStackSupervisor.mUserLeaving = false; 1428 1429 final TaskRecord prevTask = prev != null ? prev.task : null; 1430 if (next == null) { 1431 // There are no more activities! Let's just start up the 1432 // Launcher... 1433 ActivityOptions.abort(options); 1434 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1435 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1436 // Only resume home if on home display 1437 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1438 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1439 return isOnHomeDisplay() && 1440 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1441 } 1442 1443 next.delayedResume = false; 1444 1445 // If the top activity is the resumed one, nothing to do. 1446 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1447 mStackSupervisor.allResumedActivitiesComplete()) { 1448 // Make sure we have executed any pending transitions, since there 1449 // should be nothing left to do at this point. 1450 mWindowManager.executeAppTransition(); 1451 mNoAnimActivities.clear(); 1452 ActivityOptions.abort(options); 1453 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1454 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1455 return false; 1456 } 1457 1458 final TaskRecord nextTask = next.task; 1459 if (prevTask != null && prevTask.stack == this && 1460 prevTask.isOverHomeStack() && prev.finishing && prev.frontOfTask) { 1461 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1462 if (prevTask == nextTask) { 1463 prevTask.setFrontOfTask(); 1464 } else if (prevTask != topTask()) { 1465 // This task is going away but it was supposed to return to the home stack. 1466 // Now the task above it has to return to the home task instead. 1467 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1468 mTaskHistory.get(taskNdx).setTaskToReturnTo(HOME_ACTIVITY_TYPE); 1469 } else { 1470 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1471 "resumeTopActivityLocked: Launching home next"); 1472 // Only resume home if on home display 1473 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1474 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1475 return isOnHomeDisplay() && 1476 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1477 } 1478 } 1479 1480 // If we are sleeping, and there is no resumed activity, and the top 1481 // activity is paused, well that is the state we want. 1482 if (mService.isSleepingOrShuttingDown() 1483 && mLastPausedActivity == next 1484 && mStackSupervisor.allPausedActivitiesComplete()) { 1485 // Make sure we have executed any pending transitions, since there 1486 // should be nothing left to do at this point. 1487 mWindowManager.executeAppTransition(); 1488 mNoAnimActivities.clear(); 1489 ActivityOptions.abort(options); 1490 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1491 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1492 return false; 1493 } 1494 1495 // Make sure that the user who owns this activity is started. If not, 1496 // we will just leave it as is because someone should be bringing 1497 // another user's activities to the top of the stack. 1498 if (mService.mStartedUsers.get(next.userId) == null) { 1499 Slog.w(TAG, "Skipping resume of top activity " + next 1500 + ": user " + next.userId + " is stopped"); 1501 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1502 return false; 1503 } 1504 1505 // The activity may be waiting for stop, but that is no longer 1506 // appropriate for it. 1507 mStackSupervisor.mStoppingActivities.remove(next); 1508 mStackSupervisor.mGoingToSleepActivities.remove(next); 1509 next.sleeping = false; 1510 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1511 1512 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1513 1514 // If we are currently pausing an activity, then don't do anything 1515 // until that is done. 1516 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1517 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1518 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1519 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1520 return false; 1521 } 1522 1523 // Okay we are now going to start a switch, to 'next'. We may first 1524 // have to pause the current activity, but this is an important point 1525 // where we have decided to go to 'next' so keep track of that. 1526 // XXX "App Redirected" dialog is getting too many false positives 1527 // at this point, so turn off for now. 1528 if (false) { 1529 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1530 long now = SystemClock.uptimeMillis(); 1531 final boolean inTime = mLastStartedActivity.startTime != 0 1532 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1533 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1534 final int nextUid = next.info.applicationInfo.uid; 1535 if (inTime && lastUid != nextUid 1536 && lastUid != next.launchedFromUid 1537 && mService.checkPermission( 1538 android.Manifest.permission.STOP_APP_SWITCHES, 1539 -1, next.launchedFromUid) 1540 != PackageManager.PERMISSION_GRANTED) { 1541 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1542 } else { 1543 next.startTime = now; 1544 mLastStartedActivity = next; 1545 } 1546 } else { 1547 next.startTime = SystemClock.uptimeMillis(); 1548 mLastStartedActivity = next; 1549 } 1550 } 1551 1552 // We need to start pausing the current activity so the top one 1553 // can be resumed... 1554 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1555 if (mResumedActivity != null) { 1556 pausing = true; 1557 startPausingLocked(userLeaving, false); 1558 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1559 } 1560 if (pausing) { 1561 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1562 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1563 // At this point we want to put the upcoming activity's process 1564 // at the top of the LRU list, since we know we will be needing it 1565 // very soon and it would be a waste to let it get killed if it 1566 // happens to be sitting towards the end. 1567 if (next.app != null && next.app.thread != null) { 1568 mService.updateLruProcessLocked(next.app, true, null); 1569 } 1570 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1571 return true; 1572 } 1573 1574 // If the most recent activity was noHistory but was only stopped rather 1575 // than stopped+finished because the device went to sleep, we need to make 1576 // sure to finish it as we're making a new activity topmost. 1577 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1578 !mLastNoHistoryActivity.finishing) { 1579 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1580 " on new resume"); 1581 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1582 null, "no-history", false); 1583 mLastNoHistoryActivity = null; 1584 } 1585 1586 if (prev != null && prev != next) { 1587 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1588 prev.waitingVisible = true; 1589 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1590 if (DEBUG_SWITCH) Slog.v( 1591 TAG, "Resuming top, waiting visible to hide: " + prev); 1592 } else { 1593 // The next activity is already visible, so hide the previous 1594 // activity's windows right now so we can show the new one ASAP. 1595 // We only do this if the previous is finishing, which should mean 1596 // it is on top of the one being resumed so hiding it quickly 1597 // is good. Otherwise, we want to do the normal route of allowing 1598 // the resumed activity to be shown so we can decide if the 1599 // previous should actually be hidden depending on whether the 1600 // new one is found to be full-screen or not. 1601 if (prev.finishing) { 1602 mWindowManager.setAppVisibility(prev.appToken, false); 1603 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1604 + prev + ", waitingVisible=" 1605 + (prev != null ? prev.waitingVisible : null) 1606 + ", nowVisible=" + next.nowVisible); 1607 } else { 1608 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1609 + prev + ", waitingVisible=" 1610 + (prev != null ? prev.waitingVisible : null) 1611 + ", nowVisible=" + next.nowVisible); 1612 } 1613 } 1614 } 1615 1616 // Launching this app's activity, make sure the app is no longer 1617 // considered stopped. 1618 try { 1619 AppGlobals.getPackageManager().setPackageStoppedState( 1620 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1621 } catch (RemoteException e1) { 1622 } catch (IllegalArgumentException e) { 1623 Slog.w(TAG, "Failed trying to unstop package " 1624 + next.packageName + ": " + e); 1625 } 1626 1627 // We are starting up the next activity, so tell the window manager 1628 // that the previous one will be hidden soon. This way it can know 1629 // to ignore it when computing the desired screen orientation. 1630 boolean anim = true; 1631 if (prev != null) { 1632 if (prev.finishing) { 1633 if (DEBUG_TRANSITION) Slog.v(TAG, 1634 "Prepare close transition: prev=" + prev); 1635 if (mNoAnimActivities.contains(prev)) { 1636 anim = false; 1637 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1638 } else { 1639 mWindowManager.prepareAppTransition(prev.task == next.task 1640 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1641 : AppTransition.TRANSIT_TASK_CLOSE, false); 1642 } 1643 mWindowManager.setAppWillBeHidden(prev.appToken); 1644 mWindowManager.setAppVisibility(prev.appToken, false); 1645 } else { 1646 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1647 if (mNoAnimActivities.contains(next)) { 1648 anim = false; 1649 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1650 } else { 1651 mWindowManager.prepareAppTransition(prev.task == next.task 1652 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1653 : AppTransition.TRANSIT_TASK_OPEN, false); 1654 } 1655 } 1656 if (false) { 1657 mWindowManager.setAppWillBeHidden(prev.appToken); 1658 mWindowManager.setAppVisibility(prev.appToken, false); 1659 } 1660 } else { 1661 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1662 if (mNoAnimActivities.contains(next)) { 1663 anim = false; 1664 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1665 } else { 1666 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1667 } 1668 } 1669 1670 Bundle resumeAnimOptions = null; 1671 if (anim) { 1672 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1673 if (opts != null) { 1674 resumeAnimOptions = opts.toBundle(); 1675 } 1676 next.applyOptionsLocked(); 1677 } else { 1678 next.clearOptionsLocked(); 1679 } 1680 1681 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1682 if (next.app != null && next.app.thread != null) { 1683 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1684 1685 // This activity is now becoming visible. 1686 mWindowManager.setAppVisibility(next.appToken, true); 1687 1688 // schedule launch ticks to collect information about slow apps. 1689 next.startLaunchTickingLocked(); 1690 1691 ActivityRecord lastResumedActivity = 1692 lastStack == null ? null :lastStack.mResumedActivity; 1693 ActivityState lastState = next.state; 1694 1695 mService.updateCpuStats(); 1696 1697 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1698 next.state = ActivityState.RESUMED; 1699 mResumedActivity = next; 1700 next.task.touchActiveTime(); 1701 mService.addRecentTaskLocked(next.task); 1702 mService.updateLruProcessLocked(next.app, true, null); 1703 updateLRUListLocked(next); 1704 mService.updateOomAdjLocked(); 1705 1706 // Have the window manager re-evaluate the orientation of 1707 // the screen based on the new activity order. 1708 boolean notUpdated = true; 1709 if (mStackSupervisor.isFrontStack(this)) { 1710 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1711 mService.mConfiguration, 1712 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1713 if (config != null) { 1714 next.frozenBeforeDestroy = true; 1715 } 1716 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1717 } 1718 1719 if (notUpdated) { 1720 // The configuration update wasn't able to keep the existing 1721 // instance of the activity, and instead started a new one. 1722 // We should be all done, but let's just make sure our activity 1723 // is still at the top and schedule another run if something 1724 // weird happened. 1725 ActivityRecord nextNext = topRunningActivityLocked(null); 1726 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1727 "Activity config changed during resume: " + next 1728 + ", new next: " + nextNext); 1729 if (nextNext != next) { 1730 // Do over! 1731 mStackSupervisor.scheduleResumeTopActivities(); 1732 } 1733 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1734 mNoAnimActivities.clear(); 1735 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1736 return true; 1737 } 1738 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1739 return false; 1740 } 1741 1742 try { 1743 // Deliver all pending results. 1744 ArrayList<ResultInfo> a = next.results; 1745 if (a != null) { 1746 final int N = a.size(); 1747 if (!next.finishing && N > 0) { 1748 if (DEBUG_RESULTS) Slog.v( 1749 TAG, "Delivering results to " + next 1750 + ": " + a); 1751 next.app.thread.scheduleSendResult(next.appToken, a); 1752 } 1753 } 1754 1755 if (next.newIntents != null) { 1756 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1757 } 1758 1759 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1760 next.userId, System.identityHashCode(next), 1761 next.task.taskId, next.shortComponentName); 1762 1763 next.sleeping = false; 1764 mService.showAskCompatModeDialogLocked(next); 1765 next.app.pendingUiClean = true; 1766 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1767 next.clearOptionsLocked(); 1768 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1769 mService.isNextTransitionForward(), resumeAnimOptions); 1770 1771 mStackSupervisor.checkReadyForSleepLocked(); 1772 1773 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1774 } catch (Exception e) { 1775 // Whoops, need to restart this activity! 1776 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1777 + lastState + ": " + next); 1778 next.state = lastState; 1779 if (lastStack != null) { 1780 lastStack.mResumedActivity = lastResumedActivity; 1781 } 1782 Slog.i(TAG, "Restarting because process died: " + next); 1783 if (!next.hasBeenLaunched) { 1784 next.hasBeenLaunched = true; 1785 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1786 mStackSupervisor.isFrontStack(lastStack)) { 1787 mWindowManager.setAppStartingWindow( 1788 next.appToken, next.packageName, next.theme, 1789 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1790 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1791 next.windowFlags, null, true); 1792 } 1793 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1794 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1795 return true; 1796 } 1797 1798 // From this point on, if something goes wrong there is no way 1799 // to recover the activity. 1800 try { 1801 next.visible = true; 1802 completeResumeLocked(next); 1803 } catch (Exception e) { 1804 // If any exception gets thrown, toss away this 1805 // activity and try the next one. 1806 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1807 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1808 "resume-exception", true); 1809 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1810 return true; 1811 } 1812 next.stopped = false; 1813 1814 } else { 1815 // Whoops, need to restart this activity! 1816 if (!next.hasBeenLaunched) { 1817 next.hasBeenLaunched = true; 1818 } else { 1819 if (SHOW_APP_STARTING_PREVIEW) { 1820 mWindowManager.setAppStartingWindow( 1821 next.appToken, next.packageName, next.theme, 1822 mService.compatibilityInfoForPackageLocked( 1823 next.info.applicationInfo), 1824 next.nonLocalizedLabel, 1825 next.labelRes, next.icon, next.logo, next.windowFlags, 1826 null, true); 1827 } 1828 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1829 } 1830 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1831 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1832 } 1833 1834 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1835 return true; 1836 } 1837 1838 private void insertTaskAtTop(TaskRecord task) { 1839 // If this is being moved to the top by another activity or being launched from the home 1840 // activity, set mOnTopOfHome accordingly. 1841 if (isOnHomeDisplay()) { 1842 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1843 final boolean fromHome = lastStack.isHomeStack(); 1844 if (!isHomeStack() && (fromHome || topTask() != task)) { 1845 task.setTaskToReturnTo(fromHome 1846 ? lastStack.topTask() == null 1847 ? HOME_ACTIVITY_TYPE 1848 : lastStack.topTask().taskType 1849 : APPLICATION_ACTIVITY_TYPE); 1850 } 1851 } else { 1852 task.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 1853 } 1854 1855 mTaskHistory.remove(task); 1856 // Now put task at top. 1857 int stackNdx = mTaskHistory.size(); 1858 if (!isCurrentProfileLocked(task.userId)) { 1859 // Put non-current user tasks below current user tasks. 1860 while (--stackNdx >= 0) { 1861 if (!isCurrentProfileLocked(mTaskHistory.get(stackNdx).userId)) { 1862 break; 1863 } 1864 } 1865 ++stackNdx; 1866 } 1867 mTaskHistory.add(stackNdx, task); 1868 updateTaskMovement(task, true); 1869 } 1870 1871 final void startActivityLocked(ActivityRecord r, boolean newTask, 1872 boolean doResume, boolean keepCurTransition, Bundle options) { 1873 TaskRecord rTask = r.task; 1874 final int taskId = rTask.taskId; 1875 if (taskForIdLocked(taskId) == null || newTask) { 1876 // Last activity in task had been removed or ActivityManagerService is reusing task. 1877 // Insert or replace. 1878 // Might not even be in. 1879 insertTaskAtTop(rTask); 1880 mWindowManager.moveTaskToTop(taskId); 1881 } 1882 TaskRecord task = null; 1883 if (!newTask) { 1884 // If starting in an existing task, find where that is... 1885 boolean startIt = true; 1886 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1887 task = mTaskHistory.get(taskNdx); 1888 if (task == r.task) { 1889 // Here it is! Now, if this is not yet visible to the 1890 // user, then just add it without starting; it will 1891 // get started when the user navigates back to it. 1892 if (!startIt) { 1893 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1894 + task, new RuntimeException("here").fillInStackTrace()); 1895 task.addActivityToTop(r); 1896 r.putInHistory(); 1897 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1898 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1899 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1900 r.userId, r.info.configChanges, task.voiceSession != null); 1901 if (VALIDATE_TOKENS) { 1902 validateAppTokensLocked(); 1903 } 1904 ActivityOptions.abort(options); 1905 return; 1906 } 1907 break; 1908 } else if (task.numFullscreen > 0) { 1909 startIt = false; 1910 } 1911 } 1912 } 1913 1914 // Place a new activity at top of stack, so it is next to interact 1915 // with the user. 1916 1917 // If we are not placing the new activity frontmost, we do not want 1918 // to deliver the onUserLeaving callback to the actual frontmost 1919 // activity 1920 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1921 mStackSupervisor.mUserLeaving = false; 1922 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1923 "startActivity() behind front, mUserLeaving=false"); 1924 } 1925 1926 task = r.task; 1927 1928 // Slot the activity into the history stack and proceed 1929 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1930 new RuntimeException("here").fillInStackTrace()); 1931 task.addActivityToTop(r); 1932 task.setFrontOfTask(); 1933 1934 r.putInHistory(); 1935 if (!isHomeStack() || numActivities() > 0) { 1936 // We want to show the starting preview window if we are 1937 // switching to a new task, or the next activity's process is 1938 // not currently running. 1939 boolean showStartingIcon = newTask; 1940 ProcessRecord proc = r.app; 1941 if (proc == null) { 1942 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1943 } 1944 if (proc == null || proc.thread == null) { 1945 showStartingIcon = true; 1946 } 1947 if (DEBUG_TRANSITION) Slog.v(TAG, 1948 "Prepare open transition: starting " + r); 1949 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1950 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1951 mNoAnimActivities.add(r); 1952 } else { 1953 mWindowManager.prepareAppTransition(newTask 1954 ? AppTransition.TRANSIT_TASK_OPEN 1955 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1956 mNoAnimActivities.remove(r); 1957 } 1958 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1959 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1960 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1961 r.info.configChanges, task.voiceSession != null); 1962 boolean doShow = true; 1963 if (newTask) { 1964 // Even though this activity is starting fresh, we still need 1965 // to reset it to make sure we apply affinities to move any 1966 // existing activities from other tasks in to it. 1967 // If the caller has requested that the target task be 1968 // reset, then do so. 1969 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1970 resetTaskIfNeededLocked(r, r); 1971 doShow = topRunningNonDelayedActivityLocked(null) == r; 1972 } 1973 } else if (options != null && new ActivityOptions(options).getAnimationType() 1974 == ActivityOptions.ANIM_SCENE_TRANSITION) { 1975 doShow = false; 1976 } 1977 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1978 // Figure out if we are transitioning from another activity that is 1979 // "has the same starting icon" as the next one. This allows the 1980 // window manager to keep the previous window it had previously 1981 // created, if it still had one. 1982 ActivityRecord prev = mResumedActivity; 1983 if (prev != null) { 1984 // We don't want to reuse the previous starting preview if: 1985 // (1) The current activity is in a different task. 1986 if (prev.task != r.task) { 1987 prev = null; 1988 } 1989 // (2) The current activity is already displayed. 1990 else if (prev.nowVisible) { 1991 prev = null; 1992 } 1993 } 1994 mWindowManager.setAppStartingWindow( 1995 r.appToken, r.packageName, r.theme, 1996 mService.compatibilityInfoForPackageLocked( 1997 r.info.applicationInfo), r.nonLocalizedLabel, 1998 r.labelRes, r.icon, r.logo, r.windowFlags, 1999 prev != null ? prev.appToken : null, showStartingIcon); 2000 r.mStartingWindowShown = true; 2001 } 2002 } else { 2003 // If this is the first activity, don't do any fancy animations, 2004 // because there is nothing for it to animate on top of. 2005 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 2006 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 2007 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 2008 r.info.configChanges, task.voiceSession != null); 2009 ActivityOptions.abort(options); 2010 options = null; 2011 } 2012 if (VALIDATE_TOKENS) { 2013 validateAppTokensLocked(); 2014 } 2015 2016 if (doResume) { 2017 mStackSupervisor.resumeTopActivitiesLocked(this, r, options); 2018 } 2019 } 2020 2021 final void validateAppTokensLocked() { 2022 mValidateAppTokens.clear(); 2023 mValidateAppTokens.ensureCapacity(numActivities()); 2024 final int numTasks = mTaskHistory.size(); 2025 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 2026 TaskRecord task = mTaskHistory.get(taskNdx); 2027 final ArrayList<ActivityRecord> activities = task.mActivities; 2028 if (activities.isEmpty()) { 2029 continue; 2030 } 2031 TaskGroup group = new TaskGroup(); 2032 group.taskId = task.taskId; 2033 mValidateAppTokens.add(group); 2034 final int numActivities = activities.size(); 2035 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 2036 final ActivityRecord r = activities.get(activityNdx); 2037 group.tokens.add(r.appToken); 2038 } 2039 } 2040 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 2041 } 2042 2043 /** 2044 * Perform a reset of the given task, if needed as part of launching it. 2045 * Returns the new HistoryRecord at the top of the task. 2046 */ 2047 /** 2048 * Helper method for #resetTaskIfNeededLocked. 2049 * We are inside of the task being reset... we'll either finish this activity, push it out 2050 * for another task, or leave it as-is. 2051 * @param task The task containing the Activity (taskTop) that might be reset. 2052 * @param forceReset 2053 * @return An ActivityOptions that needs to be processed. 2054 */ 2055 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 2056 ActivityOptions topOptions = null; 2057 2058 int replyChainEnd = -1; 2059 boolean canMoveOptions = true; 2060 2061 // We only do this for activities that are not the root of the task (since if we finish 2062 // the root, we may no longer have the task!). 2063 final ArrayList<ActivityRecord> activities = task.mActivities; 2064 final int numActivities = activities.size(); 2065 final int rootActivityNdx = task.findEffectiveRootIndex(); 2066 for (int i = numActivities - 1; i > rootActivityNdx; --i ) { 2067 ActivityRecord target = activities.get(i); 2068 2069 final int flags = target.info.flags; 2070 final boolean finishOnTaskLaunch = 2071 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2072 final boolean allowTaskReparenting = 2073 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2074 final boolean clearWhenTaskReset = 2075 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2076 2077 if (!finishOnTaskLaunch 2078 && !clearWhenTaskReset 2079 && target.resultTo != null) { 2080 // If this activity is sending a reply to a previous 2081 // activity, we can't do anything with it now until 2082 // we reach the start of the reply chain. 2083 // XXX note that we are assuming the result is always 2084 // to the previous activity, which is almost always 2085 // the case but we really shouldn't count on. 2086 if (replyChainEnd < 0) { 2087 replyChainEnd = i; 2088 } 2089 } else if (!finishOnTaskLaunch 2090 && !clearWhenTaskReset 2091 && allowTaskReparenting 2092 && target.taskAffinity != null 2093 && !target.taskAffinity.equals(task.affinity)) { 2094 // If this activity has an affinity for another 2095 // task, then we need to move it out of here. We will 2096 // move it as far out of the way as possible, to the 2097 // bottom of the activity stack. This also keeps it 2098 // correctly ordered with any activities we previously 2099 // moved. 2100 final TaskRecord targetTask; 2101 final ActivityRecord bottom = 2102 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2103 mTaskHistory.get(0).mActivities.get(0) : null; 2104 if (bottom != null && target.taskAffinity != null 2105 && target.taskAffinity.equals(bottom.task.affinity)) { 2106 // If the activity currently at the bottom has the 2107 // same task affinity as the one we are moving, 2108 // then merge it into the same task. 2109 targetTask = bottom.task; 2110 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2111 + " out to bottom task " + bottom.task); 2112 } else { 2113 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2114 null, null, null, false); 2115 targetTask.affinityIntent = target.intent; 2116 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2117 + " out to new task " + target.task); 2118 } 2119 2120 final int targetTaskId = targetTask.taskId; 2121 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2122 2123 boolean noOptions = canMoveOptions; 2124 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2125 for (int srcPos = start; srcPos >= i; --srcPos) { 2126 final ActivityRecord p = activities.get(srcPos); 2127 if (p.finishing) { 2128 continue; 2129 } 2130 2131 canMoveOptions = false; 2132 if (noOptions && topOptions == null) { 2133 topOptions = p.takeOptionsLocked(); 2134 if (topOptions != null) { 2135 noOptions = false; 2136 } 2137 } 2138 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2139 + task + " adding to task=" + targetTask 2140 + " Callers=" + Debug.getCallers(4)); 2141 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2142 + " out to target's task " + target.task); 2143 p.setTask(targetTask, null); 2144 targetTask.addActivityAtBottom(p); 2145 2146 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2147 } 2148 2149 mWindowManager.moveTaskToBottom(targetTaskId); 2150 if (VALIDATE_TOKENS) { 2151 validateAppTokensLocked(); 2152 } 2153 2154 replyChainEnd = -1; 2155 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2156 // If the activity should just be removed -- either 2157 // because it asks for it, or the task should be 2158 // cleared -- then finish it and anything that is 2159 // part of its reply chain. 2160 int end; 2161 if (clearWhenTaskReset) { 2162 // In this case, we want to finish this activity 2163 // and everything above it, so be sneaky and pretend 2164 // like these are all in the reply chain. 2165 end = numActivities - 1; 2166 } else if (replyChainEnd < 0) { 2167 end = i; 2168 } else { 2169 end = replyChainEnd; 2170 } 2171 boolean noOptions = canMoveOptions; 2172 for (int srcPos = i; srcPos <= end; srcPos++) { 2173 ActivityRecord p = activities.get(srcPos); 2174 if (p.finishing) { 2175 continue; 2176 } 2177 canMoveOptions = false; 2178 if (noOptions && topOptions == null) { 2179 topOptions = p.takeOptionsLocked(); 2180 if (topOptions != null) { 2181 noOptions = false; 2182 } 2183 } 2184 if (DEBUG_TASKS) Slog.w(TAG, 2185 "resetTaskIntendedTask: calling finishActivity on " + p); 2186 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2187 end--; 2188 srcPos--; 2189 } 2190 } 2191 replyChainEnd = -1; 2192 } else { 2193 // If we were in the middle of a chain, well the 2194 // activity that started it all doesn't want anything 2195 // special, so leave it all as-is. 2196 replyChainEnd = -1; 2197 } 2198 } 2199 2200 return topOptions; 2201 } 2202 2203 /** 2204 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2205 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2206 * @param affinityTask The task we are looking for an affinity to. 2207 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2208 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2209 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2210 */ 2211 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2212 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2213 int replyChainEnd = -1; 2214 final int taskId = task.taskId; 2215 final String taskAffinity = task.affinity; 2216 2217 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2218 final int numActivities = activities.size(); 2219 final int rootActivityNdx = affinityTask.findEffectiveRootIndex(); 2220 2221 // Do not operate on or below the effective root Activity. 2222 for (int i = numActivities - 1; i > rootActivityNdx; --i) { 2223 ActivityRecord target = activities.get(i); 2224 2225 final int flags = target.info.flags; 2226 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2227 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2228 2229 if (target.resultTo != null) { 2230 // If this activity is sending a reply to a previous 2231 // activity, we can't do anything with it now until 2232 // we reach the start of the reply chain. 2233 // XXX note that we are assuming the result is always 2234 // to the previous activity, which is almost always 2235 // the case but we really shouldn't count on. 2236 if (replyChainEnd < 0) { 2237 replyChainEnd = i; 2238 } 2239 } else if (topTaskIsHigher 2240 && allowTaskReparenting 2241 && taskAffinity != null 2242 && taskAffinity.equals(target.taskAffinity)) { 2243 // This activity has an affinity for our task. Either remove it if we are 2244 // clearing or move it over to our task. Note that 2245 // we currently punt on the case where we are resetting a 2246 // task that is not at the top but who has activities above 2247 // with an affinity to it... this is really not a normal 2248 // case, and we will need to later pull that task to the front 2249 // and usually at that point we will do the reset and pick 2250 // up those remaining activities. (This only happens if 2251 // someone starts an activity in a new task from an activity 2252 // in a task that is not currently on top.) 2253 if (forceReset || finishOnTaskLaunch) { 2254 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2255 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2256 for (int srcPos = start; srcPos >= i; --srcPos) { 2257 final ActivityRecord p = activities.get(srcPos); 2258 if (p.finishing) { 2259 continue; 2260 } 2261 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2262 } 2263 } else { 2264 if (taskInsertionPoint < 0) { 2265 taskInsertionPoint = task.mActivities.size(); 2266 2267 } 2268 2269 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2270 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2271 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2272 for (int srcPos = start; srcPos >= i; --srcPos) { 2273 final ActivityRecord p = activities.get(srcPos); 2274 p.setTask(task, null); 2275 task.addActivityAtIndex(taskInsertionPoint, p); 2276 2277 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2278 + " to stack at " + task, 2279 new RuntimeException("here").fillInStackTrace()); 2280 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2281 + " in to resetting task " + task); 2282 mWindowManager.setAppGroupId(p.appToken, taskId); 2283 } 2284 mWindowManager.moveTaskToTop(taskId); 2285 if (VALIDATE_TOKENS) { 2286 validateAppTokensLocked(); 2287 } 2288 2289 // Now we've moved it in to place... but what if this is 2290 // a singleTop activity and we have put it on top of another 2291 // instance of the same activity? Then we drop the instance 2292 // below so it remains singleTop. 2293 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2294 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2295 int targetNdx = taskActivities.indexOf(target); 2296 if (targetNdx > 0) { 2297 ActivityRecord p = taskActivities.get(targetNdx - 1); 2298 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2299 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2300 false); 2301 } 2302 } 2303 } 2304 } 2305 2306 replyChainEnd = -1; 2307 } 2308 } 2309 return taskInsertionPoint; 2310 } 2311 2312 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2313 ActivityRecord newActivity) { 2314 boolean forceReset = 2315 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2316 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2317 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2318 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2319 forceReset = true; 2320 } 2321 } 2322 2323 final TaskRecord task = taskTop.task; 2324 2325 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2326 * for remaining tasks. Used for later tasks to reparent to task. */ 2327 boolean taskFound = false; 2328 2329 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2330 ActivityOptions topOptions = null; 2331 2332 // Preserve the location for reparenting in the new task. 2333 int reparentInsertionPoint = -1; 2334 2335 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2336 final TaskRecord targetTask = mTaskHistory.get(i); 2337 2338 if (targetTask == task) { 2339 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2340 taskFound = true; 2341 } else { 2342 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2343 taskFound, forceReset, reparentInsertionPoint); 2344 } 2345 } 2346 2347 int taskNdx = mTaskHistory.indexOf(task); 2348 do { 2349 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2350 } while (taskTop == null && taskNdx >= 0); 2351 2352 if (topOptions != null) { 2353 // If we got some ActivityOptions from an activity on top that 2354 // was removed from the task, propagate them to the new real top. 2355 if (taskTop != null) { 2356 taskTop.updateOptionsLocked(topOptions); 2357 } else { 2358 topOptions.abort(); 2359 } 2360 } 2361 2362 return taskTop; 2363 } 2364 2365 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2366 String resultWho, int requestCode, int resultCode, Intent data) { 2367 2368 if (callingUid > 0) { 2369 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2370 data, r.getUriPermissionsLocked(), r.userId); 2371 } 2372 2373 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2374 + " : who=" + resultWho + " req=" + requestCode 2375 + " res=" + resultCode + " data=" + data); 2376 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2377 try { 2378 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2379 list.add(new ResultInfo(resultWho, requestCode, 2380 resultCode, data)); 2381 r.app.thread.scheduleSendResult(r.appToken, list); 2382 return; 2383 } catch (Exception e) { 2384 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2385 } 2386 } 2387 2388 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2389 } 2390 2391 private void adjustFocusedActivityLocked(ActivityRecord r) { 2392 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2393 ActivityRecord next = topRunningActivityLocked(null); 2394 if (next != r) { 2395 final TaskRecord task = r.task; 2396 if (r.frontOfTask && task == topTask() && task.isOverHomeStack()) { 2397 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 2398 } 2399 } 2400 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2401 if (top != null) { 2402 mService.setFocusedActivityLocked(top); 2403 } 2404 } 2405 } 2406 2407 final void stopActivityLocked(ActivityRecord r) { 2408 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2409 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2410 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2411 if (!r.finishing) { 2412 if (!mService.isSleeping()) { 2413 if (DEBUG_STATES) { 2414 Slog.d(TAG, "no-history finish of " + r); 2415 } 2416 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2417 "no-history", false); 2418 } else { 2419 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2420 + " on stop because we're just sleeping"); 2421 } 2422 } 2423 } 2424 2425 if (r.app != null && r.app.thread != null) { 2426 adjustFocusedActivityLocked(r); 2427 r.resumeKeyDispatchingLocked(); 2428 try { 2429 r.stopped = false; 2430 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2431 + " (stop requested)"); 2432 r.state = ActivityState.STOPPING; 2433 if (DEBUG_VISBILITY) Slog.v( 2434 TAG, "Stopping visible=" + r.visible + " for " + r); 2435 if (!r.visible) { 2436 mWindowManager.setAppVisibility(r.appToken, false); 2437 } 2438 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2439 if (mService.isSleepingOrShuttingDown()) { 2440 r.setSleeping(true); 2441 } 2442 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2443 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2444 } catch (Exception e) { 2445 // Maybe just ignore exceptions here... if the process 2446 // has crashed, our death notification will clean things 2447 // up. 2448 Slog.w(TAG, "Exception thrown during pause", e); 2449 // Just in case, assume it to be stopped. 2450 r.stopped = true; 2451 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2452 r.state = ActivityState.STOPPED; 2453 if (r.configDestroy) { 2454 destroyActivityLocked(r, true, "stop-except"); 2455 } 2456 } 2457 } 2458 } 2459 2460 /** 2461 * @return Returns true if the activity is being finished, false if for 2462 * some reason it is being left as-is. 2463 */ 2464 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2465 Intent resultData, String reason, boolean oomAdj) { 2466 ActivityRecord r = isInStackLocked(token); 2467 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2468 TAG, "Finishing activity token=" + token + " r=" 2469 + ", result=" + resultCode + ", data=" + resultData 2470 + ", reason=" + reason); 2471 if (r == null) { 2472 return false; 2473 } 2474 2475 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2476 return true; 2477 } 2478 2479 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2480 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2481 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2482 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2483 ActivityRecord r = activities.get(activityNdx); 2484 if (r.resultTo == self && r.requestCode == requestCode) { 2485 if ((r.resultWho == null && resultWho == null) || 2486 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2487 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2488 false); 2489 } 2490 } 2491 } 2492 } 2493 mService.updateOomAdjLocked(); 2494 } 2495 2496 final void finishTopRunningActivityLocked(ProcessRecord app) { 2497 ActivityRecord r = topRunningActivityLocked(null); 2498 if (r != null && r.app == app) { 2499 // If the top running activity is from this crashing 2500 // process, then terminate it to avoid getting in a loop. 2501 Slog.w(TAG, " Force finishing activity " 2502 + r.intent.getComponent().flattenToShortString()); 2503 int taskNdx = mTaskHistory.indexOf(r.task); 2504 int activityNdx = r.task.mActivities.indexOf(r); 2505 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2506 // Also terminate any activities below it that aren't yet 2507 // stopped, to avoid a situation where one will get 2508 // re-start our crashing activity once it gets resumed again. 2509 --activityNdx; 2510 if (activityNdx < 0) { 2511 do { 2512 --taskNdx; 2513 if (taskNdx < 0) { 2514 break; 2515 } 2516 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2517 } while (activityNdx < 0); 2518 } 2519 if (activityNdx >= 0) { 2520 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2521 if (r.state == ActivityState.RESUMED 2522 || r.state == ActivityState.PAUSING 2523 || r.state == ActivityState.PAUSED) { 2524 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2525 Slog.w(TAG, " Force finishing activity " 2526 + r.intent.getComponent().flattenToShortString()); 2527 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2528 } 2529 } 2530 } 2531 } 2532 } 2533 2534 final void finishVoiceTask(IVoiceInteractionSession session) { 2535 IBinder sessionBinder = session.asBinder(); 2536 boolean didOne = false; 2537 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2538 TaskRecord tr = mTaskHistory.get(taskNdx); 2539 if (tr.voiceSession != null && tr.voiceSession.asBinder() == sessionBinder) { 2540 for (int activityNdx = tr.mActivities.size() - 1; activityNdx >= 0; --activityNdx) { 2541 ActivityRecord r = tr.mActivities.get(activityNdx); 2542 if (!r.finishing) { 2543 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "finish-voice", 2544 false); 2545 didOne = true; 2546 } 2547 } 2548 } 2549 } 2550 if (didOne) { 2551 mService.updateOomAdjLocked(); 2552 } 2553 } 2554 2555 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2556 ArrayList<ActivityRecord> activities = r.task.mActivities; 2557 for (int index = activities.indexOf(r); index >= 0; --index) { 2558 ActivityRecord cur = activities.get(index); 2559 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2560 break; 2561 } 2562 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2563 } 2564 return true; 2565 } 2566 2567 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2568 // send the result 2569 ActivityRecord resultTo = r.resultTo; 2570 if (resultTo != null) { 2571 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2572 + " who=" + r.resultWho + " req=" + r.requestCode 2573 + " res=" + resultCode + " data=" + resultData); 2574 if (resultTo.userId != r.userId) { 2575 if (resultData != null) { 2576 resultData.prepareToLeaveUser(r.userId); 2577 } 2578 } 2579 if (r.info.applicationInfo.uid > 0) { 2580 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2581 resultTo.packageName, resultData, 2582 resultTo.getUriPermissionsLocked(), resultTo.userId); 2583 } 2584 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2585 resultData); 2586 r.resultTo = null; 2587 } 2588 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2589 2590 // Make sure this HistoryRecord is not holding on to other resources, 2591 // because clients have remote IPC references to this object so we 2592 // can't assume that will go away and want to avoid circular IPC refs. 2593 r.results = null; 2594 r.pendingResults = null; 2595 r.newIntents = null; 2596 r.icicle = null; 2597 } 2598 2599 /** 2600 * @return Returns true if this activity has been removed from the history 2601 * list, or false if it is still in the list and will be removed later. 2602 */ 2603 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2604 String reason, boolean oomAdj) { 2605 if (r.finishing) { 2606 Slog.w(TAG, "Duplicate finish request for " + r); 2607 return false; 2608 } 2609 2610 r.makeFinishing(); 2611 final TaskRecord task = r.task; 2612 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2613 r.userId, System.identityHashCode(r), 2614 task.taskId, r.shortComponentName, reason); 2615 final ArrayList<ActivityRecord> activities = task.mActivities; 2616 final int index = activities.indexOf(r); 2617 if (index < (activities.size() - 1)) { 2618 task.setFrontOfTask(); 2619 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2620 // If the caller asked that this activity (and all above it) 2621 // be cleared when the task is reset, don't lose that information, 2622 // but propagate it up to the next activity. 2623 ActivityRecord next = activities.get(index+1); 2624 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2625 } 2626 } 2627 2628 r.pauseKeyDispatchingLocked(); 2629 2630 adjustFocusedActivityLocked(r); 2631 2632 finishActivityResultsLocked(r, resultCode, resultData); 2633 2634 if (mResumedActivity == r) { 2635 boolean endTask = index <= 0; 2636 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2637 "Prepare close transition: finishing " + r); 2638 mWindowManager.prepareAppTransition(endTask 2639 ? AppTransition.TRANSIT_TASK_CLOSE 2640 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2641 2642 // Tell window manager to prepare for this one to be removed. 2643 mWindowManager.setAppVisibility(r.appToken, false); 2644 2645 if (mPausingActivity == null) { 2646 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2647 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2648 startPausingLocked(false, false); 2649 } 2650 2651 if (endTask) { 2652 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2653 } 2654 } else if (r.state != ActivityState.PAUSING) { 2655 // If the activity is PAUSING, we will complete the finish once 2656 // it is done pausing; else we can just directly finish it here. 2657 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2658 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2659 } else { 2660 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2661 } 2662 2663 return false; 2664 } 2665 2666 static final int FINISH_IMMEDIATELY = 0; 2667 static final int FINISH_AFTER_PAUSE = 1; 2668 static final int FINISH_AFTER_VISIBLE = 2; 2669 2670 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2671 // First things first: if this activity is currently visible, 2672 // and the resumed activity is not yet visible, then hold off on 2673 // finishing until the resumed one becomes visible. 2674 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2675 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2676 mStackSupervisor.mStoppingActivities.add(r); 2677 if (mStackSupervisor.mStoppingActivities.size() > 3 2678 || r.frontOfTask && mTaskHistory.size() <= 1) { 2679 // If we already have a few activities waiting to stop, 2680 // then give up on things going idle and start clearing 2681 // them out. Or if r is the last of activity of the last task the stack 2682 // will be empty and must be cleared immediately. 2683 mStackSupervisor.scheduleIdleLocked(); 2684 } else { 2685 mStackSupervisor.checkReadyForSleepLocked(); 2686 } 2687 } 2688 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2689 + " (finish requested)"); 2690 r.state = ActivityState.STOPPING; 2691 if (oomAdj) { 2692 mService.updateOomAdjLocked(); 2693 } 2694 return r; 2695 } 2696 2697 // make sure the record is cleaned out of other places. 2698 mStackSupervisor.mStoppingActivities.remove(r); 2699 mStackSupervisor.mGoingToSleepActivities.remove(r); 2700 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2701 if (mResumedActivity == r) { 2702 mResumedActivity = null; 2703 } 2704 final ActivityState prevState = r.state; 2705 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2706 r.state = ActivityState.FINISHING; 2707 2708 if (mode == FINISH_IMMEDIATELY 2709 || prevState == ActivityState.STOPPED 2710 || prevState == ActivityState.INITIALIZING) { 2711 // If this activity is already stopped, we can just finish 2712 // it right now. 2713 r.makeFinishing(); 2714 boolean activityRemoved = destroyActivityLocked(r, true, "finish-imm"); 2715 if (activityRemoved) { 2716 mStackSupervisor.resumeTopActivitiesLocked(); 2717 } 2718 if (DEBUG_CONTAINERS) Slog.d(TAG, 2719 "destroyActivityLocked: finishCurrentActivityLocked r=" + r + 2720 " destroy returned removed=" + activityRemoved); 2721 return activityRemoved ? null : r; 2722 } 2723 2724 // Need to go through the full pause cycle to get this 2725 // activity into the stopped state and then finish it. 2726 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2727 mStackSupervisor.mFinishingActivities.add(r); 2728 r.resumeKeyDispatchingLocked(); 2729 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2730 return r; 2731 } 2732 2733 void finishAllActivitiesLocked() { 2734 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2735 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2736 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2737 final ActivityRecord r = activities.get(activityNdx); 2738 if (r.finishing) { 2739 continue; 2740 } 2741 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2742 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2743 } 2744 } 2745 } 2746 2747 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2748 Intent resultData) { 2749 final ActivityRecord srec = ActivityRecord.forToken(token); 2750 final TaskRecord task = srec.task; 2751 final ArrayList<ActivityRecord> activities = task.mActivities; 2752 final int start = activities.indexOf(srec); 2753 if (!mTaskHistory.contains(task) || (start < 0)) { 2754 return false; 2755 } 2756 int finishTo = start - 1; 2757 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2758 boolean foundParentInTask = false; 2759 final ComponentName dest = destIntent.getComponent(); 2760 if (start > 0 && dest != null) { 2761 for (int i = finishTo; i >= 0; i--) { 2762 ActivityRecord r = activities.get(i); 2763 if (r.info.packageName.equals(dest.getPackageName()) && 2764 r.info.name.equals(dest.getClassName())) { 2765 finishTo = i; 2766 parent = r; 2767 foundParentInTask = true; 2768 break; 2769 } 2770 } 2771 } 2772 2773 IActivityController controller = mService.mController; 2774 if (controller != null) { 2775 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2776 if (next != null) { 2777 // ask watcher if this is allowed 2778 boolean resumeOK = true; 2779 try { 2780 resumeOK = controller.activityResuming(next.packageName); 2781 } catch (RemoteException e) { 2782 mService.mController = null; 2783 Watchdog.getInstance().setActivityController(null); 2784 } 2785 2786 if (!resumeOK) { 2787 return false; 2788 } 2789 } 2790 } 2791 final long origId = Binder.clearCallingIdentity(); 2792 for (int i = start; i > finishTo; i--) { 2793 ActivityRecord r = activities.get(i); 2794 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2795 // Only return the supplied result for the first activity finished 2796 resultCode = Activity.RESULT_CANCELED; 2797 resultData = null; 2798 } 2799 2800 if (parent != null && foundParentInTask) { 2801 final int parentLaunchMode = parent.info.launchMode; 2802 final int destIntentFlags = destIntent.getFlags(); 2803 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2804 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2805 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2806 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2807 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2808 } else { 2809 try { 2810 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2811 destIntent.getComponent(), 0, srec.userId); 2812 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2813 null, aInfo, null, null, parent.appToken, null, 2814 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2815 0, null, true, null, null); 2816 foundParentInTask = res == ActivityManager.START_SUCCESS; 2817 } catch (RemoteException e) { 2818 foundParentInTask = false; 2819 } 2820 requestFinishActivityLocked(parent.appToken, resultCode, 2821 resultData, "navigate-up", true); 2822 } 2823 } 2824 Binder.restoreCallingIdentity(origId); 2825 return foundParentInTask; 2826 } 2827 /** 2828 * Perform the common clean-up of an activity record. This is called both 2829 * as part of destroyActivityLocked() (when destroying the client-side 2830 * representation) and cleaning things up as a result of its hosting 2831 * processing going away, in which case there is no remaining client-side 2832 * state to destroy so only the cleanup here is needed. 2833 */ 2834 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2835 boolean setState) { 2836 if (mResumedActivity == r) { 2837 mResumedActivity = null; 2838 } 2839 if (mPausingActivity == r) { 2840 mPausingActivity = null; 2841 } 2842 mService.clearFocusedActivity(r); 2843 2844 r.configDestroy = false; 2845 r.frozenBeforeDestroy = false; 2846 2847 if (setState) { 2848 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2849 r.state = ActivityState.DESTROYED; 2850 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2851 r.app = null; 2852 } 2853 2854 // Make sure this record is no longer in the pending finishes list. 2855 // This could happen, for example, if we are trimming activities 2856 // down to the max limit while they are still waiting to finish. 2857 mStackSupervisor.mFinishingActivities.remove(r); 2858 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2859 2860 // Remove any pending results. 2861 if (r.finishing && r.pendingResults != null) { 2862 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2863 PendingIntentRecord rec = apr.get(); 2864 if (rec != null) { 2865 mService.cancelIntentSenderLocked(rec, false); 2866 } 2867 } 2868 r.pendingResults = null; 2869 } 2870 2871 if (cleanServices) { 2872 cleanUpActivityServicesLocked(r); 2873 } 2874 2875 // Get rid of any pending idle timeouts. 2876 removeTimeoutsForActivityLocked(r); 2877 if (getMediaPlayer() == r) { 2878 mStackSupervisor.setMediaPlayingLocked(r, false); 2879 } 2880 } 2881 2882 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2883 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2884 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2885 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2886 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2887 r.finishLaunchTickingLocked(); 2888 } 2889 2890 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2891 mStackSupervisor.removeChildActivityContainers(r); 2892 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2893 r.makeFinishing(); 2894 if (DEBUG_ADD_REMOVE) { 2895 RuntimeException here = new RuntimeException("here"); 2896 here.fillInStackTrace(); 2897 Slog.i(TAG, "Removing activity " + r + " from stack"); 2898 } 2899 r.takeFromHistory(); 2900 removeTimeoutsForActivityLocked(r); 2901 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2902 r.state = ActivityState.DESTROYED; 2903 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2904 r.app = null; 2905 mWindowManager.removeAppToken(r.appToken); 2906 if (VALIDATE_TOKENS) { 2907 validateAppTokensLocked(); 2908 } 2909 final TaskRecord task = r.task; 2910 if (task != null && task.removeActivity(r)) { 2911 if (DEBUG_STACK) Slog.i(TAG, 2912 "removeActivityFromHistoryLocked: last activity removed from " + this); 2913 if (mStackSupervisor.isFrontStack(this) && task == topTask() && 2914 task.isOverHomeStack()) { 2915 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 2916 } 2917 removeTask(task); 2918 } 2919 cleanUpActivityServicesLocked(r); 2920 r.removeUriPermissionsLocked(); 2921 } 2922 2923 /** 2924 * Perform clean-up of service connections in an activity record. 2925 */ 2926 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2927 // Throw away any services that have been bound by this activity. 2928 if (r.connections != null) { 2929 Iterator<ConnectionRecord> it = r.connections.iterator(); 2930 while (it.hasNext()) { 2931 ConnectionRecord c = it.next(); 2932 mService.mServices.removeConnectionLocked(c, null, r); 2933 } 2934 r.connections = null; 2935 } 2936 } 2937 2938 final void scheduleDestroyActivities(ProcessRecord owner, String reason) { 2939 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2940 msg.obj = new ScheduleDestroyArgs(owner, reason); 2941 mHandler.sendMessage(msg); 2942 } 2943 2944 final void destroyActivitiesLocked(ProcessRecord owner, String reason) { 2945 boolean lastIsOpaque = false; 2946 boolean activityRemoved = false; 2947 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2948 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2949 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2950 final ActivityRecord r = activities.get(activityNdx); 2951 if (r.finishing) { 2952 continue; 2953 } 2954 if (r.fullscreen) { 2955 lastIsOpaque = true; 2956 } 2957 if (owner != null && r.app != owner) { 2958 continue; 2959 } 2960 if (!lastIsOpaque) { 2961 continue; 2962 } 2963 // We can destroy this one if we have its icicle saved and 2964 // it is not in the process of pausing/stopping/finishing. 2965 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2966 && r.haveState && !r.visible && r.stopped 2967 && r.state != ActivityState.DESTROYING 2968 && r.state != ActivityState.DESTROYED) { 2969 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2970 + " resumed=" + mResumedActivity 2971 + " pausing=" + mPausingActivity); 2972 if (destroyActivityLocked(r, true, reason)) { 2973 activityRemoved = true; 2974 } 2975 } 2976 } 2977 } 2978 if (activityRemoved) { 2979 mStackSupervisor.resumeTopActivitiesLocked(); 2980 } 2981 } 2982 2983 /** 2984 * Destroy the current CLIENT SIDE instance of an activity. This may be 2985 * called both when actually finishing an activity, or when performing 2986 * a configuration switch where we destroy the current client-side object 2987 * but then create a new client-side object for this same HistoryRecord. 2988 */ 2989 final boolean destroyActivityLocked(ActivityRecord r, boolean removeFromApp, String reason) { 2990 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2991 TAG, "Removing activity from " + reason + ": token=" + r 2992 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2993 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2994 r.userId, System.identityHashCode(r), 2995 r.task.taskId, r.shortComponentName, reason); 2996 2997 boolean removedFromHistory = false; 2998 2999 cleanUpActivityLocked(r, false, false); 3000 3001 final boolean hadApp = r.app != null; 3002 3003 if (hadApp) { 3004 if (removeFromApp) { 3005 r.app.activities.remove(r); 3006 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 3007 mService.mHeavyWeightProcess = null; 3008 mService.mHandler.sendEmptyMessage( 3009 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 3010 } 3011 if (r.app.activities.isEmpty()) { 3012 // No longer have activities, so update LRU list and oom adj. 3013 mService.updateLruProcessLocked(r.app, false, null); 3014 mService.updateOomAdjLocked(); 3015 } 3016 } 3017 3018 boolean skipDestroy = false; 3019 3020 try { 3021 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 3022 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 3023 r.configChangeFlags); 3024 } catch (Exception e) { 3025 // We can just ignore exceptions here... if the process 3026 // has crashed, our death notification will clean things 3027 // up. 3028 //Slog.w(TAG, "Exception thrown during finish", e); 3029 if (r.finishing) { 3030 removeActivityFromHistoryLocked(r); 3031 removedFromHistory = true; 3032 skipDestroy = true; 3033 } 3034 } 3035 3036 r.nowVisible = false; 3037 3038 // If the activity is finishing, we need to wait on removing it 3039 // from the list to give it a chance to do its cleanup. During 3040 // that time it may make calls back with its token so we need to 3041 // be able to find it on the list and so we don't want to remove 3042 // it from the list yet. Otherwise, we can just immediately put 3043 // it in the destroyed state since we are not removing it from the 3044 // list. 3045 if (r.finishing && !skipDestroy) { 3046 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 3047 + " (destroy requested)"); 3048 r.state = ActivityState.DESTROYING; 3049 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 3050 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 3051 } else { 3052 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 3053 r.state = ActivityState.DESTROYED; 3054 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3055 r.app = null; 3056 } 3057 } else { 3058 // remove this record from the history. 3059 if (r.finishing) { 3060 removeActivityFromHistoryLocked(r); 3061 removedFromHistory = true; 3062 } else { 3063 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 3064 r.state = ActivityState.DESTROYED; 3065 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3066 r.app = null; 3067 } 3068 } 3069 3070 r.configChangeFlags = 0; 3071 3072 if (!mLRUActivities.remove(r) && hadApp) { 3073 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 3074 } 3075 3076 return removedFromHistory; 3077 } 3078 3079 final void activityDestroyedLocked(IBinder token) { 3080 final long origId = Binder.clearCallingIdentity(); 3081 try { 3082 ActivityRecord r = ActivityRecord.forToken(token); 3083 if (r != null) { 3084 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3085 } 3086 if (DEBUG_CONTAINERS) Slog.d(TAG, "activityDestroyedLocked: r=" + r); 3087 3088 if (isInStackLocked(token) != null) { 3089 if (r.state == ActivityState.DESTROYING) { 3090 cleanUpActivityLocked(r, true, false); 3091 removeActivityFromHistoryLocked(r); 3092 } 3093 } 3094 mStackSupervisor.resumeTopActivitiesLocked(); 3095 } finally { 3096 Binder.restoreCallingIdentity(origId); 3097 } 3098 } 3099 3100 void releaseMediaResources() { 3101 if (isMediaPlaying() && !mHandler.hasMessages(STOP_MEDIA_PLAYING_TIMEOUT_MSG)) { 3102 final ActivityRecord r = getMediaPlayer(); 3103 if (DEBUG_STATES) Slog.d(TAG, "releaseMediaResources activtyDisplay=" + 3104 mActivityContainer.mActivityDisplay + " mediaPlayer=" + r + " app=" + r.app + 3105 " thread=" + r.app.thread); 3106 if (r != null && r.app != null && r.app.thread != null) { 3107 try { 3108 r.app.thread.scheduleStopMediaPlaying(r.appToken); 3109 } catch (RemoteException e) { 3110 } 3111 mHandler.sendEmptyMessageDelayed(STOP_MEDIA_PLAYING_TIMEOUT_MSG, 500); 3112 } else { 3113 Slog.e(TAG, "releaseMediaResources: activity " + r + " no longer running"); 3114 mediaResourcesReleased(r.appToken); 3115 } 3116 } 3117 } 3118 3119 final void mediaResourcesReleased(IBinder token) { 3120 mHandler.removeMessages(STOP_MEDIA_PLAYING_TIMEOUT_MSG); 3121 final ActivityRecord r = getMediaPlayer(); 3122 if (r != null) { 3123 mStackSupervisor.mStoppingActivities.add(r); 3124 setMediaPlayer(null); 3125 } 3126 mStackSupervisor.resumeTopActivitiesLocked(); 3127 } 3128 3129 boolean isMediaPlaying() { 3130 return isAttached() && mActivityContainer.mActivityDisplay.isMediaPlaying(); 3131 } 3132 3133 void setMediaPlayer(ActivityRecord r) { 3134 if (isAttached()) { 3135 mActivityContainer.mActivityDisplay.setMediaPlaying(r); 3136 } 3137 } 3138 3139 ActivityRecord getMediaPlayer() { 3140 return isAttached() ? mActivityContainer.mActivityDisplay.mMediaPlayingActivity : null; 3141 } 3142 3143 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3144 ProcessRecord app, String listName) { 3145 int i = list.size(); 3146 if (DEBUG_CLEANUP) Slog.v( 3147 TAG, "Removing app " + app + " from list " + listName 3148 + " with " + i + " entries"); 3149 while (i > 0) { 3150 i--; 3151 ActivityRecord r = list.get(i); 3152 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3153 if (r.app == app) { 3154 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3155 list.remove(i); 3156 removeTimeoutsForActivityLocked(r); 3157 } 3158 } 3159 } 3160 3161 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3162 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3163 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3164 "mStoppingActivities"); 3165 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3166 "mGoingToSleepActivities"); 3167 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3168 "mWaitingVisibleActivities"); 3169 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3170 "mFinishingActivities"); 3171 3172 boolean hasVisibleActivities = false; 3173 3174 // Clean out the history list. 3175 int i = numActivities(); 3176 if (DEBUG_CLEANUP) Slog.v( 3177 TAG, "Removing app " + app + " from history with " + i + " entries"); 3178 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3179 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3180 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3181 final ActivityRecord r = activities.get(activityNdx); 3182 --i; 3183 if (DEBUG_CLEANUP) Slog.v( 3184 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3185 if (r.app == app) { 3186 boolean remove; 3187 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3188 // Don't currently have state for the activity, or 3189 // it is finishing -- always remove it. 3190 remove = true; 3191 } else if (r.launchCount > 2 && 3192 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3193 // We have launched this activity too many times since it was 3194 // able to run, so give up and remove it. 3195 remove = true; 3196 } else { 3197 // The process may be gone, but the activity lives on! 3198 remove = false; 3199 } 3200 if (remove) { 3201 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3202 RuntimeException here = new RuntimeException("here"); 3203 here.fillInStackTrace(); 3204 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3205 + ": haveState=" + r.haveState 3206 + " stateNotNeeded=" + r.stateNotNeeded 3207 + " finishing=" + r.finishing 3208 + " state=" + r.state, here); 3209 } 3210 if (!r.finishing) { 3211 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3212 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3213 r.userId, System.identityHashCode(r), 3214 r.task.taskId, r.shortComponentName, 3215 "proc died without state saved"); 3216 if (r.state == ActivityState.RESUMED) { 3217 mService.updateUsageStats(r, false); 3218 } 3219 } 3220 removeActivityFromHistoryLocked(r); 3221 3222 } else { 3223 // We have the current state for this activity, so 3224 // it can be restarted later when needed. 3225 if (localLOGV) Slog.v( 3226 TAG, "Keeping entry, setting app to null"); 3227 if (r.visible) { 3228 hasVisibleActivities = true; 3229 } 3230 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3231 + r); 3232 r.app = null; 3233 r.nowVisible = false; 3234 if (!r.haveState) { 3235 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3236 "App died, clearing saved state of " + r); 3237 r.icicle = null; 3238 } 3239 } 3240 3241 cleanUpActivityLocked(r, true, true); 3242 } 3243 } 3244 } 3245 3246 return hasVisibleActivities; 3247 } 3248 3249 final void updateTransitLocked(int transit, Bundle options) { 3250 if (options != null) { 3251 ActivityRecord r = topRunningActivityLocked(null); 3252 if (r != null && r.state != ActivityState.RESUMED) { 3253 r.updateOptionsLocked(options); 3254 } else { 3255 ActivityOptions.abort(options); 3256 } 3257 } 3258 mWindowManager.prepareAppTransition(transit, false); 3259 } 3260 3261 void updateTaskMovement(TaskRecord task, boolean toFront) { 3262 if (task.isPersistable) { 3263 task.mLastTimeMoved = System.currentTimeMillis(); 3264 // Sign is used to keep tasks sorted when persisted. Tasks sent to the bottom most 3265 // recently will be most negative, tasks sent to the bottom before that will be less 3266 // negative. Similarly for recent tasks moved to the top which will be most positive. 3267 if (!toFront) { 3268 task.mLastTimeMoved *= -1; 3269 } 3270 } 3271 } 3272 3273 void moveHomeStackTaskToTop(int homeStackTaskType) { 3274 final int top = mTaskHistory.size() - 1; 3275 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3276 final TaskRecord task = mTaskHistory.get(taskNdx); 3277 if (task.taskType == homeStackTaskType) { 3278 if (DEBUG_TASKS || DEBUG_STACK) 3279 Slog.d(TAG, "moveHomeStackTaskToTop: moving " + task); 3280 mTaskHistory.remove(taskNdx); 3281 mTaskHistory.add(top, task); 3282 updateTaskMovement(task, true); 3283 mWindowManager.moveTaskToTop(task.taskId); 3284 return; 3285 } 3286 } 3287 } 3288 3289 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3290 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3291 3292 final int numTasks = mTaskHistory.size(); 3293 final int index = mTaskHistory.indexOf(tr); 3294 if (numTasks == 0 || index < 0) { 3295 // nothing to do! 3296 if (reason != null && 3297 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3298 ActivityOptions.abort(options); 3299 } else { 3300 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3301 } 3302 return; 3303 } 3304 3305 moveToFront(); 3306 3307 // Shift all activities with this task up to the top 3308 // of the stack, keeping them in the same internal order. 3309 insertTaskAtTop(tr); 3310 3311 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3312 if (reason != null && 3313 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3314 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3315 ActivityRecord r = topRunningActivityLocked(null); 3316 if (r != null) { 3317 mNoAnimActivities.add(r); 3318 } 3319 ActivityOptions.abort(options); 3320 } else { 3321 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3322 } 3323 3324 mWindowManager.moveTaskToTop(tr.taskId); 3325 3326 mStackSupervisor.resumeTopActivitiesLocked(); 3327 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3328 3329 if (VALIDATE_TOKENS) { 3330 validateAppTokensLocked(); 3331 } 3332 } 3333 3334 /** 3335 * Worker method for rearranging history stack. Implements the function of moving all 3336 * activities for a specific task (gathering them if disjoint) into a single group at the 3337 * bottom of the stack. 3338 * 3339 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3340 * to premeptively cancel the move. 3341 * 3342 * @param taskId The taskId to collect and move to the bottom. 3343 * @return Returns true if the move completed, false if not. 3344 */ 3345 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3346 final TaskRecord tr = taskForIdLocked(taskId); 3347 if (tr == null) { 3348 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3349 return false; 3350 } 3351 3352 Slog.i(TAG, "moveTaskToBack: " + tr); 3353 3354 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3355 3356 // If we have a watcher, preflight the move before committing to it. First check 3357 // for *other* available tasks, but if none are available, then try again allowing the 3358 // current task to be selected. 3359 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3360 ActivityRecord next = topRunningActivityLocked(null, taskId); 3361 if (next == null) { 3362 next = topRunningActivityLocked(null, 0); 3363 } 3364 if (next != null) { 3365 // ask watcher if this is allowed 3366 boolean moveOK = true; 3367 try { 3368 moveOK = mService.mController.activityResuming(next.packageName); 3369 } catch (RemoteException e) { 3370 mService.mController = null; 3371 Watchdog.getInstance().setActivityController(null); 3372 } 3373 if (!moveOK) { 3374 return false; 3375 } 3376 } 3377 } 3378 3379 if (DEBUG_TRANSITION) Slog.v(TAG, 3380 "Prepare to back transition: task=" + taskId); 3381 3382 mTaskHistory.remove(tr); 3383 mTaskHistory.add(0, tr); 3384 updateTaskMovement(tr, false); 3385 3386 // There is an assumption that moving a task to the back moves it behind the home activity. 3387 // We make sure here that some activity in the stack will launch home. 3388 int numTasks = mTaskHistory.size(); 3389 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3390 final TaskRecord task = mTaskHistory.get(taskNdx); 3391 if (task.isOverHomeStack()) { 3392 break; 3393 } 3394 if (taskNdx == 1) { 3395 // Set the last task before tr to go to home. 3396 task.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3397 } 3398 } 3399 3400 if (reason != null && 3401 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3402 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3403 ActivityRecord r = topRunningActivityLocked(null); 3404 if (r != null) { 3405 mNoAnimActivities.add(r); 3406 } 3407 } else { 3408 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3409 } 3410 mWindowManager.moveTaskToBottom(taskId); 3411 3412 if (VALIDATE_TOKENS) { 3413 validateAppTokensLocked(); 3414 } 3415 3416 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3417 if (task == tr && tr.isOverHomeStack() || numTasks <= 1 && isOnHomeDisplay()) { 3418 final int taskToReturnTo = tr.getTaskToReturnTo(); 3419 tr.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 3420 return mStackSupervisor.resumeHomeStackTask(taskToReturnTo, null); 3421 } 3422 3423 mStackSupervisor.resumeTopActivitiesLocked(); 3424 return true; 3425 } 3426 3427 static final void logStartActivity(int tag, ActivityRecord r, 3428 TaskRecord task) { 3429 final Uri data = r.intent.getData(); 3430 final String strData = data != null ? data.toSafeString() : null; 3431 3432 EventLog.writeEvent(tag, 3433 r.userId, System.identityHashCode(r), task.taskId, 3434 r.shortComponentName, r.intent.getAction(), 3435 r.intent.getType(), strData, r.intent.getFlags()); 3436 } 3437 3438 /** 3439 * Make sure the given activity matches the current configuration. Returns 3440 * false if the activity had to be destroyed. Returns true if the 3441 * configuration is the same, or the activity will remain running as-is 3442 * for whatever reason. Ensures the HistoryRecord is updated with the 3443 * correct configuration and all other bookkeeping is handled. 3444 */ 3445 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3446 int globalChanges) { 3447 if (mConfigWillChange) { 3448 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3449 "Skipping config check (will change): " + r); 3450 return true; 3451 } 3452 3453 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3454 "Ensuring correct configuration: " + r); 3455 3456 // Short circuit: if the two configurations are the exact same 3457 // object (the common case), then there is nothing to do. 3458 Configuration newConfig = mService.mConfiguration; 3459 if (r.configuration == newConfig && !r.forceNewConfig) { 3460 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3461 "Configuration unchanged in " + r); 3462 return true; 3463 } 3464 3465 // We don't worry about activities that are finishing. 3466 if (r.finishing) { 3467 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3468 "Configuration doesn't matter in finishing " + r); 3469 r.stopFreezingScreenLocked(false); 3470 return true; 3471 } 3472 3473 // Okay we now are going to make this activity have the new config. 3474 // But then we need to figure out how it needs to deal with that. 3475 Configuration oldConfig = r.configuration; 3476 r.configuration = newConfig; 3477 3478 // Determine what has changed. May be nothing, if this is a config 3479 // that has come back from the app after going idle. In that case 3480 // we just want to leave the official config object now in the 3481 // activity and do nothing else. 3482 final int changes = oldConfig.diff(newConfig); 3483 if (changes == 0 && !r.forceNewConfig) { 3484 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3485 "Configuration no differences in " + r); 3486 return true; 3487 } 3488 3489 // If the activity isn't currently running, just leave the new 3490 // configuration and it will pick that up next time it starts. 3491 if (r.app == null || r.app.thread == null) { 3492 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3493 "Configuration doesn't matter not running " + r); 3494 r.stopFreezingScreenLocked(false); 3495 r.forceNewConfig = false; 3496 return true; 3497 } 3498 3499 // Figure out how to handle the changes between the configurations. 3500 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3501 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3502 + Integer.toHexString(changes) + ", handles=0x" 3503 + Integer.toHexString(r.info.getRealConfigChanged()) 3504 + ", newConfig=" + newConfig); 3505 } 3506 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3507 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3508 r.configChangeFlags |= changes; 3509 r.startFreezingScreenLocked(r.app, globalChanges); 3510 r.forceNewConfig = false; 3511 if (r.app == null || r.app.thread == null) { 3512 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3513 "Config is destroying non-running " + r); 3514 destroyActivityLocked(r, true, "config"); 3515 } else if (r.state == ActivityState.PAUSING) { 3516 // A little annoying: we are waiting for this activity to 3517 // finish pausing. Let's not do anything now, but just 3518 // flag that it needs to be restarted when done pausing. 3519 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3520 "Config is skipping already pausing " + r); 3521 r.configDestroy = true; 3522 return true; 3523 } else if (r.state == ActivityState.RESUMED) { 3524 // Try to optimize this case: the configuration is changing 3525 // and we need to restart the top, resumed activity. 3526 // Instead of doing the normal handshaking, just say 3527 // "restart!". 3528 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3529 "Config is relaunching resumed " + r); 3530 relaunchActivityLocked(r, r.configChangeFlags, true); 3531 r.configChangeFlags = 0; 3532 } else { 3533 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3534 "Config is relaunching non-resumed " + r); 3535 relaunchActivityLocked(r, r.configChangeFlags, false); 3536 r.configChangeFlags = 0; 3537 } 3538 3539 // All done... tell the caller we weren't able to keep this 3540 // activity around. 3541 return false; 3542 } 3543 3544 // Default case: the activity can handle this new configuration, so 3545 // hand it over. Note that we don't need to give it the new 3546 // configuration, since we always send configuration changes to all 3547 // process when they happen so it can just use whatever configuration 3548 // it last got. 3549 if (r.app != null && r.app.thread != null) { 3550 try { 3551 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3552 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3553 } catch (RemoteException e) { 3554 // If process died, whatever. 3555 } 3556 } 3557 r.stopFreezingScreenLocked(false); 3558 3559 return true; 3560 } 3561 3562 private boolean relaunchActivityLocked(ActivityRecord r, 3563 int changes, boolean andResume) { 3564 List<ResultInfo> results = null; 3565 List<Intent> newIntents = null; 3566 if (andResume) { 3567 results = r.results; 3568 newIntents = r.newIntents; 3569 } 3570 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3571 + " with results=" + results + " newIntents=" + newIntents 3572 + " andResume=" + andResume); 3573 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3574 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3575 r.task.taskId, r.shortComponentName); 3576 3577 r.startFreezingScreenLocked(r.app, 0); 3578 3579 mStackSupervisor.removeChildActivityContainers(r); 3580 3581 try { 3582 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3583 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3584 + r); 3585 r.forceNewConfig = false; 3586 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3587 changes, !andResume, new Configuration(mService.mConfiguration)); 3588 // Note: don't need to call pauseIfSleepingLocked() here, because 3589 // the caller will only pass in 'andResume' if this activity is 3590 // currently resumed, which implies we aren't sleeping. 3591 } catch (RemoteException e) { 3592 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3593 } 3594 3595 if (andResume) { 3596 r.results = null; 3597 r.newIntents = null; 3598 r.state = ActivityState.RESUMED; 3599 } else { 3600 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3601 r.state = ActivityState.PAUSED; 3602 } 3603 3604 return true; 3605 } 3606 3607 boolean willActivityBeVisibleLocked(IBinder token) { 3608 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3609 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3610 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3611 final ActivityRecord r = activities.get(activityNdx); 3612 if (r.appToken == token) { 3613 return true; 3614 } 3615 if (r.fullscreen && !r.finishing) { 3616 return false; 3617 } 3618 } 3619 } 3620 final ActivityRecord r = ActivityRecord.forToken(token); 3621 if (r == null) { 3622 return false; 3623 } 3624 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3625 + " would have returned true for r=" + r); 3626 return !r.finishing; 3627 } 3628 3629 void closeSystemDialogsLocked() { 3630 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3631 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3632 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3633 final ActivityRecord r = activities.get(activityNdx); 3634 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3635 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3636 } 3637 } 3638 } 3639 } 3640 3641 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3642 boolean didSomething = false; 3643 TaskRecord lastTask = null; 3644 ComponentName homeActivity = null; 3645 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3646 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3647 int numActivities = activities.size(); 3648 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3649 ActivityRecord r = activities.get(activityNdx); 3650 final boolean samePackage = r.packageName.equals(name) 3651 || (name == null && r.userId == userId); 3652 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3653 && (samePackage || r.task == lastTask) 3654 && (r.app == null || evenPersistent || !r.app.persistent)) { 3655 if (!doit) { 3656 if (r.finishing) { 3657 // If this activity is just finishing, then it is not 3658 // interesting as far as something to stop. 3659 continue; 3660 } 3661 return true; 3662 } 3663 if (r.isHomeActivity()) { 3664 if (homeActivity != null && homeActivity.equals(r.realActivity)) { 3665 Slog.i(TAG, "Skip force-stop again " + r); 3666 continue; 3667 } else { 3668 homeActivity = r.realActivity; 3669 } 3670 } 3671 didSomething = true; 3672 Slog.i(TAG, " Force finishing activity " + r); 3673 if (samePackage) { 3674 if (r.app != null) { 3675 r.app.removed = true; 3676 } 3677 r.app = null; 3678 } 3679 lastTask = r.task; 3680 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3681 true)) { 3682 // r has been deleted from mActivities, accommodate. 3683 --numActivities; 3684 --activityNdx; 3685 } 3686 } 3687 } 3688 } 3689 return didSomething; 3690 } 3691 3692 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3693 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3694 final TaskRecord task = mTaskHistory.get(taskNdx); 3695 ActivityRecord r = null; 3696 ActivityRecord top = null; 3697 int numActivities = 0; 3698 int numRunning = 0; 3699 final ArrayList<ActivityRecord> activities = task.mActivities; 3700 if (activities.isEmpty()) { 3701 continue; 3702 } 3703 if (!allowed && !task.isHomeTask() && task.creatorUid != callingUid) { 3704 continue; 3705 } 3706 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3707 r = activities.get(activityNdx); 3708 3709 // Initialize state for next task if needed. 3710 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3711 top = r; 3712 numActivities = numRunning = 0; 3713 } 3714 3715 // Add 'r' into the current task. 3716 numActivities++; 3717 if (r.app != null && r.app.thread != null) { 3718 numRunning++; 3719 } 3720 3721 if (localLOGV) Slog.v( 3722 TAG, r.intent.getComponent().flattenToShortString() 3723 + ": task=" + r.task); 3724 } 3725 3726 RunningTaskInfo ci = new RunningTaskInfo(); 3727 ci.id = task.taskId; 3728 ci.baseActivity = r.intent.getComponent(); 3729 ci.topActivity = top.intent.getComponent(); 3730 ci.lastActiveTime = task.lastActiveTime; 3731 3732 if (top.task != null) { 3733 ci.description = top.task.lastDescription; 3734 } 3735 ci.numActivities = numActivities; 3736 ci.numRunning = numRunning; 3737 //System.out.println( 3738 // "#" + maxNum + ": " + " descr=" + ci.description); 3739 list.add(ci); 3740 } 3741 } 3742 3743 public void unhandledBackLocked() { 3744 final int top = mTaskHistory.size() - 1; 3745 if (DEBUG_SWITCH) Slog.d( 3746 TAG, "Performing unhandledBack(): top activity at " + top); 3747 if (top >= 0) { 3748 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3749 int activityTop = activities.size() - 1; 3750 if (activityTop > 0) { 3751 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3752 "unhandled-back", true); 3753 } 3754 } 3755 } 3756 3757 /** 3758 * Reset local parameters because an app's activity died. 3759 * @param app The app of the activity that died. 3760 * @return result from removeHistoryRecordsForAppLocked. 3761 */ 3762 boolean handleAppDiedLocked(ProcessRecord app) { 3763 if (mPausingActivity != null && mPausingActivity.app == app) { 3764 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3765 "App died while pausing: " + mPausingActivity); 3766 mPausingActivity = null; 3767 } 3768 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3769 mLastPausedActivity = null; 3770 mLastNoHistoryActivity = null; 3771 } 3772 3773 return removeHistoryRecordsForAppLocked(app); 3774 } 3775 3776 void handleAppCrashLocked(ProcessRecord app) { 3777 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3778 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3779 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3780 final ActivityRecord r = activities.get(activityNdx); 3781 if (r.app == app) { 3782 Slog.w(TAG, " Force finishing activity " 3783 + r.intent.getComponent().flattenToShortString()); 3784 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3785 } 3786 } 3787 } 3788 } 3789 3790 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3791 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3792 boolean printed = false; 3793 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3794 final TaskRecord task = mTaskHistory.get(taskNdx); 3795 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3796 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3797 dumpClient, dumpPackage, needSep, header, 3798 " Task id #" + task.taskId); 3799 if (printed) { 3800 header = null; 3801 } 3802 } 3803 return printed; 3804 } 3805 3806 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3807 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3808 3809 if ("all".equals(name)) { 3810 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3811 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3812 } 3813 } else if ("top".equals(name)) { 3814 final int top = mTaskHistory.size() - 1; 3815 if (top >= 0) { 3816 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3817 int listTop = list.size() - 1; 3818 if (listTop >= 0) { 3819 activities.add(list.get(listTop)); 3820 } 3821 } 3822 } else { 3823 ItemMatcher matcher = new ItemMatcher(); 3824 matcher.build(name); 3825 3826 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3827 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3828 if (matcher.match(r1, r1.intent.getComponent())) { 3829 activities.add(r1); 3830 } 3831 } 3832 } 3833 } 3834 3835 return activities; 3836 } 3837 3838 ActivityRecord restartPackage(String packageName) { 3839 ActivityRecord starting = topRunningActivityLocked(null); 3840 3841 // All activities that came from the package must be 3842 // restarted as if there was a config change. 3843 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3844 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3845 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3846 final ActivityRecord a = activities.get(activityNdx); 3847 if (a.info.packageName.equals(packageName)) { 3848 a.forceNewConfig = true; 3849 if (starting != null && a == starting && a.visible) { 3850 a.startFreezingScreenLocked(starting.app, 3851 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3852 } 3853 } 3854 } 3855 } 3856 3857 return starting; 3858 } 3859 3860 void removeTask(TaskRecord task) { 3861 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3862 mWindowManager.removeTask(task.taskId); 3863 final ActivityRecord r = mResumedActivity; 3864 if (r != null && r.task == task) { 3865 mResumedActivity = null; 3866 } 3867 3868 final int taskNdx = mTaskHistory.indexOf(task); 3869 final int topTaskNdx = mTaskHistory.size() - 1; 3870 if (task.isOverHomeStack() && taskNdx < topTaskNdx) { 3871 final TaskRecord nextTask = mTaskHistory.get(taskNdx + 1); 3872 if (!nextTask.isOverHomeStack()) { 3873 nextTask.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3874 } 3875 } 3876 mTaskHistory.remove(task); 3877 updateTaskMovement(task, true); 3878 3879 if (task.mActivities.isEmpty()) { 3880 final boolean isVoiceSession = task.voiceSession != null; 3881 if (isVoiceSession) { 3882 try { 3883 task.voiceSession.taskFinished(task.intent, task.taskId); 3884 } catch (RemoteException e) { 3885 } 3886 } 3887 if (task.autoRemoveFromRecents() || isVoiceSession) { 3888 // Task creator asked to remove this when done, or this task was a voice 3889 // interaction, so it should not remain on the recent tasks list. 3890 mService.mRecentTasks.remove(task); 3891 task.closeRecentsChain(); 3892 } 3893 } 3894 3895 if (mTaskHistory.isEmpty()) { 3896 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3897 if (isOnHomeDisplay()) { 3898 mStackSupervisor.moveHomeStack(!isHomeStack()); 3899 } 3900 if (mStacks != null) { 3901 mStacks.remove(this); 3902 mStacks.add(0, this); 3903 } 3904 mActivityContainer.onTaskListEmptyLocked(); 3905 } 3906 } 3907 3908 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 3909 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 3910 boolean toTop) { 3911 TaskRecord task = new TaskRecord(mService, taskId, info, intent, voiceSession, 3912 voiceInteractor); 3913 addTask(task, toTop, false); 3914 return task; 3915 } 3916 3917 ArrayList<TaskRecord> getAllTasks() { 3918 return new ArrayList<TaskRecord>(mTaskHistory); 3919 } 3920 3921 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 3922 task.stack = this; 3923 if (toTop) { 3924 insertTaskAtTop(task); 3925 } else { 3926 mTaskHistory.add(0, task); 3927 updateTaskMovement(task, false); 3928 } 3929 if (!moving && task.voiceSession != null) { 3930 try { 3931 task.voiceSession.taskStarted(task.intent, task.taskId); 3932 } catch (RemoteException e) { 3933 } 3934 } 3935 } 3936 3937 public int getStackId() { 3938 return mStackId; 3939 } 3940 3941 @Override 3942 public String toString() { 3943 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3944 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3945 } 3946} 3947