ActivityStack.java revision 729cb2391f8eedbab9af1d0ef62febb0b56292cc
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.am; 18 19import static com.android.server.am.ActivityManagerService.TAG; 20import static com.android.server.am.ActivityManagerService.localLOGV; 21import static com.android.server.am.ActivityManagerService.DEBUG_CLEANUP; 22import static com.android.server.am.ActivityManagerService.DEBUG_CONFIGURATION; 23import static com.android.server.am.ActivityManagerService.DEBUG_PAUSE; 24import static com.android.server.am.ActivityManagerService.DEBUG_RESULTS; 25import static com.android.server.am.ActivityManagerService.DEBUG_STACK; 26import static com.android.server.am.ActivityManagerService.DEBUG_SWITCH; 27import static com.android.server.am.ActivityManagerService.DEBUG_TASKS; 28import static com.android.server.am.ActivityManagerService.DEBUG_TRANSITION; 29import static com.android.server.am.ActivityManagerService.DEBUG_USER_LEAVING; 30import static com.android.server.am.ActivityManagerService.DEBUG_VISBILITY; 31import static com.android.server.am.ActivityManagerService.VALIDATE_TOKENS; 32 33import static com.android.server.am.ActivityStackSupervisor.DEBUG_ADD_REMOVE; 34import static com.android.server.am.ActivityStackSupervisor.DEBUG_APP; 35import static com.android.server.am.ActivityStackSupervisor.DEBUG_SAVED_STATE; 36import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 37import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 38 39import android.service.voice.IVoiceInteractionSession; 40import com.android.internal.app.IVoiceInteractor; 41import com.android.internal.os.BatteryStatsImpl; 42import com.android.server.Watchdog; 43import com.android.server.am.ActivityManagerService.ItemMatcher; 44import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 45import com.android.server.wm.AppTransition; 46import com.android.server.wm.TaskGroup; 47import com.android.server.wm.WindowManagerService; 48 49import android.app.Activity; 50import android.app.ActivityManager; 51import android.app.ActivityOptions; 52import android.app.AppGlobals; 53import android.app.IActivityController; 54import android.app.ResultInfo; 55import android.app.ActivityManager.RunningTaskInfo; 56import android.content.ComponentName; 57import android.content.Intent; 58import android.content.pm.ActivityInfo; 59import android.content.pm.PackageManager; 60import android.content.res.Configuration; 61import android.content.res.Resources; 62import android.graphics.Bitmap; 63import android.net.Uri; 64import android.os.Binder; 65import android.os.Bundle; 66import android.os.Debug; 67import android.os.Handler; 68import android.os.IBinder; 69import android.os.Looper; 70import android.os.Message; 71import android.os.RemoteException; 72import android.os.SystemClock; 73import android.os.Trace; 74import android.os.UserHandle; 75import android.util.EventLog; 76import android.util.Slog; 77import android.view.Display; 78 79import java.io.FileDescriptor; 80import java.io.PrintWriter; 81import java.lang.ref.WeakReference; 82import java.util.ArrayList; 83import java.util.Iterator; 84import java.util.List; 85import java.util.Objects; 86 87/** 88 * State and management of a single stack of activities. 89 */ 90final class ActivityStack { 91 92 // Ticks during which we check progress while waiting for an app to launch. 93 static final int LAUNCH_TICK = 500; 94 95 // How long we wait until giving up on the last activity to pause. This 96 // is short because it directly impacts the responsiveness of starting the 97 // next activity. 98 static final int PAUSE_TIMEOUT = 500; 99 100 // How long we wait for the activity to tell us it has stopped before 101 // giving up. This is a good amount of time because we really need this 102 // from the application in order to get its saved state. 103 static final int STOP_TIMEOUT = 10*1000; 104 105 // How long we wait until giving up on an activity telling us it has 106 // finished destroying itself. 107 static final int DESTROY_TIMEOUT = 10*1000; 108 109 // How long until we reset a task when the user returns to it. Currently 110 // disabled. 111 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 112 113 // How long between activity launches that we consider safe to not warn 114 // the user about an unexpected activity being launched on top. 115 static final long START_WARN_TIME = 5*1000; 116 117 // Set to false to disable the preview that is shown while a new activity 118 // is being started. 119 static final boolean SHOW_APP_STARTING_PREVIEW = true; 120 121 // How long to wait for all background Activities to redraw following a call to 122 // convertToTranslucent(). 123 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 124 125 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 126 127 enum ActivityState { 128 INITIALIZING, 129 RESUMED, 130 PAUSING, 131 PAUSED, 132 STOPPING, 133 STOPPED, 134 FINISHING, 135 DESTROYING, 136 DESTROYED 137 } 138 139 final ActivityManagerService mService; 140 final WindowManagerService mWindowManager; 141 142 /** 143 * The back history of all previous (and possibly still 144 * running) activities. It contains #TaskRecord objects. 145 */ 146 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 147 148 /** 149 * Used for validating app tokens with window manager. 150 */ 151 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 152 153 /** 154 * List of running activities, sorted by recent usage. 155 * The first entry in the list is the least recently used. 156 * It contains HistoryRecord objects. 157 */ 158 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 159 160 /** 161 * Animations that for the current transition have requested not to 162 * be considered for the transition animation. 163 */ 164 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 165 166 /** 167 * When we are in the process of pausing an activity, before starting the 168 * next one, this variable holds the activity that is currently being paused. 169 */ 170 ActivityRecord mPausingActivity = null; 171 172 /** 173 * This is the last activity that we put into the paused state. This is 174 * used to determine if we need to do an activity transition while sleeping, 175 * when we normally hold the top activity paused. 176 */ 177 ActivityRecord mLastPausedActivity = null; 178 179 /** 180 * Activities that specify No History must be removed once the user navigates away from them. 181 * If the device goes to sleep with such an activity in the paused state then we save it here 182 * and finish it later if another activity replaces it on wakeup. 183 */ 184 ActivityRecord mLastNoHistoryActivity = null; 185 186 /** 187 * Current activity that is resumed, or null if there is none. 188 */ 189 ActivityRecord mResumedActivity = null; 190 191 /** 192 * This is the last activity that has been started. It is only used to 193 * identify when multiple activities are started at once so that the user 194 * can be warned they may not be in the activity they think they are. 195 */ 196 ActivityRecord mLastStartedActivity = null; 197 198 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 199 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 200 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 201 // Activity in mTranslucentActivityWaiting is notified via 202 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 203 // background activity being drawn then the same call will be made with a true value. 204 ActivityRecord mTranslucentActivityWaiting = null; 205 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 206 new ArrayList<ActivityRecord>(); 207 208 /** 209 * Set when we know we are going to be calling updateConfiguration() 210 * soon, so want to skip intermediate config checks. 211 */ 212 boolean mConfigWillChange; 213 214 long mLaunchStartTime = 0; 215 long mFullyDrawnStartTime = 0; 216 217 /** 218 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 219 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 220 */ 221 private ActivityRecord mLastScreenshotActivity = null; 222 private Bitmap mLastScreenshotBitmap = null; 223 224 int mThumbnailWidth = -1; 225 int mThumbnailHeight = -1; 226 227 int mCurrentUser; 228 229 final int mStackId; 230 final ActivityContainer mActivityContainer; 231 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 232 ArrayList<ActivityStack> mStacks; 233 /** The attached Display's unique identifier, or -1 if detached */ 234 int mDisplayId; 235 236 /** Run all ActivityStacks through this */ 237 final ActivityStackSupervisor mStackSupervisor; 238 239 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 240 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 241 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 242 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 243 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 244 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 245 246 static class ScheduleDestroyArgs { 247 final ProcessRecord mOwner; 248 final boolean mOomAdj; 249 final String mReason; 250 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 251 mOwner = owner; 252 mOomAdj = oomAdj; 253 mReason = reason; 254 } 255 } 256 257 final Handler mHandler; 258 259 final class ActivityStackHandler extends Handler { 260 //public Handler() { 261 // if (localLOGV) Slog.v(TAG, "Handler started!"); 262 //} 263 ActivityStackHandler(Looper looper) { 264 super(looper); 265 } 266 267 @Override 268 public void handleMessage(Message msg) { 269 switch (msg.what) { 270 case PAUSE_TIMEOUT_MSG: { 271 ActivityRecord r = (ActivityRecord)msg.obj; 272 // We don't at this point know if the activity is fullscreen, 273 // so we need to be conservative and assume it isn't. 274 Slog.w(TAG, "Activity pause timeout for " + r); 275 synchronized (mService) { 276 if (r.app != null) { 277 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 278 } 279 activityPausedLocked(r.appToken, true); 280 } 281 } break; 282 case LAUNCH_TICK_MSG: { 283 ActivityRecord r = (ActivityRecord)msg.obj; 284 synchronized (mService) { 285 if (r.continueLaunchTickingLocked()) { 286 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 287 } 288 } 289 } break; 290 case DESTROY_TIMEOUT_MSG: { 291 ActivityRecord r = (ActivityRecord)msg.obj; 292 // We don't at this point know if the activity is fullscreen, 293 // so we need to be conservative and assume it isn't. 294 Slog.w(TAG, "Activity destroy timeout for " + r); 295 synchronized (mService) { 296 activityDestroyedLocked(r != null ? r.appToken : null); 297 } 298 } break; 299 case STOP_TIMEOUT_MSG: { 300 ActivityRecord r = (ActivityRecord)msg.obj; 301 // We don't at this point know if the activity is fullscreen, 302 // so we need to be conservative and assume it isn't. 303 Slog.w(TAG, "Activity stop timeout for " + r); 304 synchronized (mService) { 305 if (r.isInHistory()) { 306 activityStoppedLocked(r, null, null, null); 307 } 308 } 309 } break; 310 case DESTROY_ACTIVITIES_MSG: { 311 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 312 synchronized (mService) { 313 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 314 } 315 } break; 316 case TRANSLUCENT_TIMEOUT_MSG: { 317 synchronized (mService) { 318 notifyActivityDrawnLocked(null); 319 } 320 } break; 321 } 322 } 323 } 324 325 int numActivities() { 326 int count = 0; 327 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 328 count += mTaskHistory.get(taskNdx).mActivities.size(); 329 } 330 return count; 331 } 332 333 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 334 mActivityContainer = activityContainer; 335 mStackSupervisor = activityContainer.getOuter(); 336 mService = mStackSupervisor.mService; 337 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 338 mWindowManager = mService.mWindowManager; 339 mStackId = activityContainer.mStackId; 340 mCurrentUser = mService.mCurrentUserId; 341 } 342 343 /** 344 * Checks whether the userid is a profile of the current user. 345 */ 346 private boolean isCurrentProfileLocked(int userId) { 347 if (userId == mCurrentUser) return true; 348 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 349 if (mService.mCurrentProfileIds[i] == userId) return true; 350 } 351 return false; 352 } 353 354 boolean okToShowLocked(ActivityRecord r) { 355 return isCurrentProfileLocked(r.userId) 356 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 357 } 358 359 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 360 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 361 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 362 if (r != null) { 363 return r; 364 } 365 } 366 return null; 367 } 368 369 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 370 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 371 final TaskRecord task = mTaskHistory.get(taskNdx); 372 final ArrayList<ActivityRecord> activities = task.mActivities; 373 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 374 ActivityRecord r = activities.get(activityNdx); 375 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 376 return r; 377 } 378 } 379 } 380 return null; 381 } 382 383 /** 384 * This is a simplified version of topRunningActivityLocked that provides a number of 385 * optional skip-over modes. It is intended for use with the ActivityController hook only. 386 * 387 * @param token If non-null, any history records matching this token will be skipped. 388 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 389 * 390 * @return Returns the HistoryRecord of the next activity on the stack. 391 */ 392 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 393 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 394 TaskRecord task = mTaskHistory.get(taskNdx); 395 if (task.taskId == taskId) { 396 continue; 397 } 398 ArrayList<ActivityRecord> activities = task.mActivities; 399 for (int i = activities.size() - 1; i >= 0; --i) { 400 final ActivityRecord r = activities.get(i); 401 // Note: the taskId check depends on real taskId fields being non-zero 402 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 403 return r; 404 } 405 } 406 } 407 return null; 408 } 409 410 final ActivityRecord topActivity() { 411 // Iterate to find the first non-empty task stack. Note that this code can 412 // be simplified once we stop storing tasks with empty mActivities lists. 413 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 414 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 415 final int topActivityNdx = activities.size() - 1; 416 if (topActivityNdx >= 0) { 417 return activities.get(topActivityNdx); 418 } 419 } 420 return null; 421 } 422 423 final TaskRecord topTask() { 424 final int size = mTaskHistory.size(); 425 if (size > 0) { 426 return mTaskHistory.get(size - 1); 427 } 428 return null; 429 } 430 431 TaskRecord taskForIdLocked(int id) { 432 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 433 final TaskRecord task = mTaskHistory.get(taskNdx); 434 if (task.taskId == id) { 435 return task; 436 } 437 } 438 return null; 439 } 440 441 ActivityRecord isInStackLocked(IBinder token) { 442 final ActivityRecord r = ActivityRecord.forToken(token); 443 if (r != null) { 444 final TaskRecord task = r.task; 445 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 446 if (task.stack != this) Slog.w(TAG, 447 "Illegal state! task does not point to stack it is in."); 448 return r; 449 } 450 } 451 return null; 452 } 453 454 final boolean updateLRUListLocked(ActivityRecord r) { 455 final boolean hadit = mLRUActivities.remove(r); 456 mLRUActivities.add(r); 457 return hadit; 458 } 459 460 final boolean isHomeStack() { 461 return mStackId == HOME_STACK_ID; 462 } 463 464 final boolean isOnHomeDisplay() { 465 return isAttached() && 466 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 467 } 468 469 final void moveToFront() { 470 if (isAttached()) { 471 if (isOnHomeDisplay()) { 472 mStackSupervisor.moveHomeStack(isHomeStack()); 473 } 474 mStacks.remove(this); 475 mStacks.add(this); 476 } 477 } 478 479 final boolean isAttached() { 480 return mStacks != null; 481 } 482 483 /** 484 * Returns the top activity in any existing task matching the given 485 * Intent. Returns null if no such task is found. 486 */ 487 ActivityRecord findTaskLocked(ActivityRecord target) { 488 Intent intent = target.intent; 489 ActivityInfo info = target.info; 490 ComponentName cls = intent.getComponent(); 491 if (info.targetActivity != null) { 492 cls = new ComponentName(info.packageName, info.targetActivity); 493 } 494 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 495 boolean isDocument = intent != null & intent.isDocument(); 496 // If documentData is non-null then it must match the existing task data. 497 Uri documentData = isDocument ? intent.getData() : null; 498 499 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 500 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 501 final TaskRecord task = mTaskHistory.get(taskNdx); 502 if (task.voiceSession != null) { 503 // We never match voice sessions; those always run independently. 504 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 505 continue; 506 } 507 if (task.userId != userId) { 508 // Looking for a different task. 509 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 510 continue; 511 } 512 final ActivityRecord r = task.getTopActivity(); 513 if (r == null || r.finishing || r.userId != userId || 514 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 515 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 516 continue; 517 } 518 519 final Intent taskIntent = task.intent; 520 final Intent affinityIntent = task.affinityIntent; 521 final boolean taskIsDocument; 522 final Uri taskDocumentData; 523 if (taskIntent != null && taskIntent.isDocument()) { 524 taskIsDocument = true; 525 taskDocumentData = taskIntent.getData(); 526 } else if (affinityIntent != null && affinityIntent.isDocument()) { 527 taskIsDocument = true; 528 taskDocumentData = affinityIntent.getData(); 529 } else { 530 taskIsDocument = false; 531 taskDocumentData = null; 532 } 533 534 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 535 + taskIntent.getComponent().flattenToShortString() 536 + "/aff=" + r.task.affinity + " to new cls=" 537 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 538 if (!isDocument && !taskIsDocument && task.affinity != null) { 539 if (task.affinity.equals(target.taskAffinity)) { 540 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 541 return r; 542 } 543 } else if (taskIntent != null && taskIntent.getComponent().equals(cls) && 544 Objects.equals(documentData, taskDocumentData)) { 545 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 546 //dump(); 547 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 548 + r.intent); 549 return r; 550 } else if (affinityIntent != null && affinityIntent.getComponent().equals(cls) && 551 Objects.equals(documentData, taskDocumentData)) { 552 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 553 //dump(); 554 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 555 + r.intent); 556 return r; 557 } else if (DEBUG_TASKS) { 558 Slog.d(TAG, "Not a match: " + task); 559 } 560 } 561 562 return null; 563 } 564 565 /** 566 * Returns the first activity (starting from the top of the stack) that 567 * is the same as the given activity. Returns null if no such activity 568 * is found. 569 */ 570 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 571 ComponentName cls = intent.getComponent(); 572 if (info.targetActivity != null) { 573 cls = new ComponentName(info.packageName, info.targetActivity); 574 } 575 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 576 577 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 578 TaskRecord task = mTaskHistory.get(taskNdx); 579 if (!isCurrentProfileLocked(task.userId)) { 580 return null; 581 } 582 final ArrayList<ActivityRecord> activities = task.mActivities; 583 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 584 ActivityRecord r = activities.get(activityNdx); 585 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 586 //Slog.i(TAG, "Found matching class!"); 587 //dump(); 588 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 589 return r; 590 } 591 } 592 } 593 594 return null; 595 } 596 597 /* 598 * Move the activities around in the stack to bring a user to the foreground. 599 */ 600 final void switchUserLocked(int userId) { 601 if (mCurrentUser == userId) { 602 return; 603 } 604 mCurrentUser = userId; 605 606 // Move userId's tasks to the top. 607 int index = mTaskHistory.size(); 608 for (int i = 0; i < index; ) { 609 TaskRecord task = mTaskHistory.get(i); 610 if (isCurrentProfileLocked(task.userId)) { 611 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 612 " moving " + task + " to top"); 613 mTaskHistory.remove(i); 614 mTaskHistory.add(task); 615 --index; 616 // Use same value for i. 617 } else { 618 ++i; 619 } 620 } 621 if (VALIDATE_TOKENS) { 622 validateAppTokensLocked(); 623 } 624 } 625 626 void minimalResumeActivityLocked(ActivityRecord r) { 627 r.state = ActivityState.RESUMED; 628 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 629 + " (starting new instance)"); 630 r.stopped = false; 631 mResumedActivity = r; 632 r.task.touchActiveTime(); 633 mService.addRecentTaskLocked(r.task); 634 completeResumeLocked(r); 635 mStackSupervisor.checkReadyForSleepLocked(); 636 setLaunchTime(r); 637 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 638 } 639 640 private void startLaunchTraces() { 641 if (mFullyDrawnStartTime != 0) { 642 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 643 } 644 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 645 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 646 } 647 648 private void stopFullyDrawnTraceIfNeeded() { 649 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 650 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 651 mFullyDrawnStartTime = 0; 652 } 653 } 654 655 void setLaunchTime(ActivityRecord r) { 656 if (r.displayStartTime == 0) { 657 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 658 if (mLaunchStartTime == 0) { 659 startLaunchTraces(); 660 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 661 } 662 } else if (mLaunchStartTime == 0) { 663 startLaunchTraces(); 664 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 665 } 666 } 667 668 void clearLaunchTime(ActivityRecord r) { 669 // Make sure that there is no activity waiting for this to launch. 670 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 671 r.displayStartTime = r.fullyDrawnStartTime = 0; 672 } else { 673 mStackSupervisor.removeTimeoutsForActivityLocked(r); 674 mStackSupervisor.scheduleIdleTimeoutLocked(r); 675 } 676 } 677 678 void awakeFromSleepingLocked() { 679 // Ensure activities are no longer sleeping. 680 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 681 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 682 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 683 activities.get(activityNdx).setSleeping(false); 684 } 685 } 686 } 687 688 /** 689 * @return true if something must be done before going to sleep. 690 */ 691 boolean checkReadyForSleepLocked() { 692 if (mResumedActivity != null) { 693 // Still have something resumed; can't sleep until it is paused. 694 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 695 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 696 startPausingLocked(false, true); 697 return true; 698 } 699 if (mPausingActivity != null) { 700 // Still waiting for something to pause; can't sleep yet. 701 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 702 return true; 703 } 704 705 return false; 706 } 707 708 void goToSleep() { 709 ensureActivitiesVisibleLocked(null, 0); 710 711 // Make sure any stopped but visible activities are now sleeping. 712 // This ensures that the activity's onStop() is called. 713 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 714 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 715 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 716 final ActivityRecord r = activities.get(activityNdx); 717 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 718 r.setSleeping(true); 719 } 720 } 721 } 722 } 723 724 public final Bitmap screenshotActivities(ActivityRecord who) { 725 if (who.noDisplay) { 726 return null; 727 } 728 729 TaskRecord tr = who.task; 730 if (mService.getMostRecentTask() != tr && tr.intent != null && 731 (tr.intent.getFlags() & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) != 0) { 732 // If this task is being excluded from recents, we don't want to take 733 // the expense of capturing a thumbnail, since we will never show it. 734 return null; 735 } 736 737 Resources res = mService.mContext.getResources(); 738 int w = mThumbnailWidth; 739 int h = mThumbnailHeight; 740 if (w < 0) { 741 Configuration config = res.getConfiguration(); 742 boolean useAlternateRecents = (config.smallestScreenWidthDp < 600); 743 if (useAlternateRecents) { 744 mThumbnailWidth = w = 745 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_width); 746 mThumbnailHeight = h = 747 res.getDimensionPixelSize(com.android.internal.R.dimen.recents_thumbnail_height); 748 } else { 749 mThumbnailWidth = w = 750 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 751 mThumbnailHeight = h = 752 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 753 } 754 } 755 756 if (w > 0) { 757 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 758 || mLastScreenshotActivity.state == ActivityState.RESUMED 759 || mLastScreenshotBitmap.getWidth() != w 760 || mLastScreenshotBitmap.getHeight() != h) { 761 mLastScreenshotActivity = who; 762 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 763 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 764 } 765 if (mLastScreenshotBitmap != null) { 766 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 767 } 768 } 769 return null; 770 } 771 772 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 773 if (mPausingActivity != null) { 774 Slog.e(TAG, "Trying to pause when pause is already pending for " 775 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 776 } 777 ActivityRecord prev = mResumedActivity; 778 if (prev == null) { 779 Slog.e(TAG, "Trying to pause when nothing is resumed", 780 new RuntimeException("here").fillInStackTrace()); 781 mStackSupervisor.resumeTopActivitiesLocked(); 782 return; 783 } 784 785 if (mActivityContainer.mParentActivity == null) { 786 // Top level stack, not a child. Look for child stacks. 787 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 788 } 789 790 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 791 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 792 mResumedActivity = null; 793 mPausingActivity = prev; 794 mLastPausedActivity = prev; 795 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 796 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 797 prev.state = ActivityState.PAUSING; 798 prev.task.touchActiveTime(); 799 clearLaunchTime(prev); 800 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 801 if (next == null || next.noDisplay || next.task != prev.task) { 802 prev.updateThumbnail(screenshotActivities(prev), null); 803 } 804 stopFullyDrawnTraceIfNeeded(); 805 806 mService.updateCpuStats(); 807 808 if (prev.app != null && prev.app.thread != null) { 809 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 810 try { 811 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 812 prev.userId, System.identityHashCode(prev), 813 prev.shortComponentName); 814 mService.updateUsageStats(prev, false); 815 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 816 userLeaving, prev.configChangeFlags); 817 } catch (Exception e) { 818 // Ignore exception, if process died other code will cleanup. 819 Slog.w(TAG, "Exception thrown during pause", e); 820 mPausingActivity = null; 821 mLastPausedActivity = null; 822 mLastNoHistoryActivity = null; 823 } 824 } else { 825 mPausingActivity = null; 826 mLastPausedActivity = null; 827 mLastNoHistoryActivity = null; 828 } 829 830 // If we are not going to sleep, we want to ensure the device is 831 // awake until the next activity is started. 832 if (!mService.isSleepingOrShuttingDown()) { 833 mStackSupervisor.acquireLaunchWakelock(); 834 } 835 836 if (mPausingActivity != null) { 837 // Have the window manager pause its key dispatching until the new 838 // activity has started. If we're pausing the activity just because 839 // the screen is being turned off and the UI is sleeping, don't interrupt 840 // key dispatch; the same activity will pick it up again on wakeup. 841 if (!uiSleeping) { 842 prev.pauseKeyDispatchingLocked(); 843 } else { 844 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 845 } 846 847 // Schedule a pause timeout in case the app doesn't respond. 848 // We don't give it much time because this directly impacts the 849 // responsiveness seen by the user. 850 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 851 msg.obj = prev; 852 prev.pauseTime = SystemClock.uptimeMillis(); 853 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 854 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 855 } else { 856 // This activity failed to schedule the 857 // pause, so just treat it as being paused now. 858 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 859 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 860 } 861 } 862 863 final void activityPausedLocked(IBinder token, boolean timeout) { 864 if (DEBUG_PAUSE) Slog.v( 865 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 866 867 final ActivityRecord r = isInStackLocked(token); 868 if (r != null) { 869 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 870 if (mPausingActivity == r) { 871 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 872 + (timeout ? " (due to timeout)" : " (pause complete)")); 873 r.state = ActivityState.PAUSED; 874 completePauseLocked(); 875 } else { 876 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 877 r.userId, System.identityHashCode(r), r.shortComponentName, 878 mPausingActivity != null 879 ? mPausingActivity.shortComponentName : "(none)"); 880 } 881 } 882 } 883 884 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, Bitmap thumbnail, 885 CharSequence description) { 886 if (r.state != ActivityState.STOPPING) { 887 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 888 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 889 return; 890 } 891 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 892 if (icicle != null) { 893 // If icicle is null, this is happening due to a timeout, so we 894 // haven't really saved the state. 895 r.icicle = icicle; 896 r.haveState = true; 897 r.launchCount = 0; 898 r.updateThumbnail(thumbnail, description); 899 } 900 if (!r.stopped) { 901 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 902 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 903 r.stopped = true; 904 r.state = ActivityState.STOPPED; 905 if (r.finishing) { 906 r.clearOptionsLocked(); 907 } else { 908 if (r.configDestroy) { 909 destroyActivityLocked(r, true, false, "stop-config"); 910 mStackSupervisor.resumeTopActivitiesLocked(); 911 } else { 912 mStackSupervisor.updatePreviousProcessLocked(r); 913 } 914 } 915 } 916 } 917 918 private void completePauseLocked() { 919 ActivityRecord prev = mPausingActivity; 920 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 921 922 if (prev != null) { 923 if (prev.finishing) { 924 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 925 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 926 } else if (prev.app != null) { 927 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 928 if (prev.waitingVisible) { 929 prev.waitingVisible = false; 930 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 931 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 932 TAG, "Complete pause, no longer waiting: " + prev); 933 } 934 if (prev.configDestroy) { 935 // The previous is being paused because the configuration 936 // is changing, which means it is actually stopping... 937 // To juggle the fact that we are also starting a new 938 // instance right now, we need to first completely stop 939 // the current instance before starting the new one. 940 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 941 destroyActivityLocked(prev, true, false, "pause-config"); 942 } else { 943 mStackSupervisor.mStoppingActivities.add(prev); 944 if (mStackSupervisor.mStoppingActivities.size() > 3 || 945 prev.frontOfTask && mTaskHistory.size() <= 1) { 946 // If we already have a few activities waiting to stop, 947 // then give up on things going idle and start clearing 948 // them out. Or if r is the last of activity of the last task the stack 949 // will be empty and must be cleared immediately. 950 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 951 mStackSupervisor.scheduleIdleLocked(); 952 } else { 953 mStackSupervisor.checkReadyForSleepLocked(); 954 } 955 } 956 } else { 957 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 958 prev = null; 959 } 960 mPausingActivity = null; 961 } 962 963 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 964 if (!mService.isSleepingOrShuttingDown()) { 965 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 966 } else { 967 mStackSupervisor.checkReadyForSleepLocked(); 968 ActivityRecord top = topStack.topRunningActivityLocked(null); 969 if (top == null || (prev != null && top != prev)) { 970 // If there are no more activities available to run, 971 // do resume anyway to start something. Also if the top 972 // activity on the stack is not the just paused activity, 973 // we need to go ahead and resume it to ensure we complete 974 // an in-flight app switch. 975 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 976 } 977 } 978 979 if (prev != null) { 980 prev.resumeKeyDispatchingLocked(); 981 982 if (prev.app != null && prev.cpuTimeAtResume > 0 983 && mService.mBatteryStatsService.isOnBattery()) { 984 long diff; 985 synchronized (mService.mProcessCpuThread) { 986 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 987 - prev.cpuTimeAtResume; 988 } 989 if (diff > 0) { 990 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 991 synchronized (bsi) { 992 BatteryStatsImpl.Uid.Proc ps = 993 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 994 prev.info.packageName); 995 if (ps != null) { 996 ps.addForegroundTimeLocked(diff); 997 } 998 } 999 } 1000 } 1001 prev.cpuTimeAtResume = 0; // reset it 1002 } 1003 } 1004 1005 /** 1006 * Once we know that we have asked an application to put an activity in 1007 * the resumed state (either by launching it or explicitly telling it), 1008 * this function updates the rest of our state to match that fact. 1009 */ 1010 private void completeResumeLocked(ActivityRecord next) { 1011 next.idle = false; 1012 next.results = null; 1013 next.newIntents = null; 1014 if (next.nowVisible) { 1015 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1016 mStackSupervisor.dismissKeyguard(); 1017 } 1018 1019 // schedule an idle timeout in case the app doesn't do it for us. 1020 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1021 1022 mStackSupervisor.reportResumedActivityLocked(next); 1023 1024 next.resumeKeyDispatchingLocked(); 1025 mNoAnimActivities.clear(); 1026 1027 // Mark the point when the activity is resuming 1028 // TODO: To be more accurate, the mark should be before the onCreate, 1029 // not after the onResume. But for subsequent starts, onResume is fine. 1030 if (next.app != null) { 1031 synchronized (mService.mProcessCpuThread) { 1032 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1033 } 1034 } else { 1035 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1036 } 1037 } 1038 1039 /** 1040 * Determine if home should be visible below the passed record. 1041 * @param record activity we are querying for. 1042 * @return true if home is visible below the passed activity, false otherwise. 1043 */ 1044 boolean isActivityOverHome(ActivityRecord record) { 1045 // Start at record and go down, look for either home or a visible fullscreen activity. 1046 final TaskRecord recordTask = record.task; 1047 for (int taskNdx = mTaskHistory.indexOf(recordTask); taskNdx >= 0; --taskNdx) { 1048 TaskRecord task = mTaskHistory.get(taskNdx); 1049 final ArrayList<ActivityRecord> activities = task.mActivities; 1050 final int startNdx = 1051 task == recordTask ? activities.indexOf(record) : activities.size() - 1; 1052 for (int activityNdx = startNdx; activityNdx >= 0; --activityNdx) { 1053 final ActivityRecord r = activities.get(activityNdx); 1054 if (r.isHomeActivity()) { 1055 return true; 1056 } 1057 if (!r.finishing && r.fullscreen) { 1058 // Passed activity is over a fullscreen activity. 1059 return false; 1060 } 1061 } 1062 if (task.mOnTopOfHome) { 1063 // Got to the bottom of a task on top of home without finding a visible fullscreen 1064 // activity. Home is visible. 1065 return true; 1066 } 1067 } 1068 // Got to the bottom of this stack and still don't know. If this is over the home stack 1069 // then record is over home. May not work if we ever get more than two layers. 1070 return mStackSupervisor.isFrontStack(this); 1071 } 1072 1073 private void setVisibile(ActivityRecord r, boolean visible) { 1074 r.visible = visible; 1075 mWindowManager.setAppVisibility(r.appToken, visible); 1076 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1077 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1078 ActivityContainer container = containers.get(containerNdx); 1079 container.setVisible(visible); 1080 } 1081 } 1082 1083 // Checks if any of the stacks above this one has a fullscreen activity behind it. 1084 // If so, this stack is hidden, otherwise it is visible. 1085 private boolean isStackVisible() { 1086 if (!isAttached()) { 1087 return false; 1088 } 1089 1090 if (mStackSupervisor.isFrontStack(this)) { 1091 return true; 1092 } 1093 1094 /** 1095 * Start at the task above this one and go up, looking for a visible 1096 * fullscreen activity, or a translucent activity that requested the 1097 * wallpaper to be shown behind it. 1098 */ 1099 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) { 1100 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks(); 1101 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) { 1102 final ArrayList<ActivityRecord> activities = tasks.get(taskNdx).mActivities; 1103 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) { 1104 final ActivityRecord r = activities.get(activityNdx); 1105 1106 // Conditions for an activity to obscure the stack we're 1107 // examining: 1108 // 1. Not Finishing AND Visible AND: 1109 // 2. Either: 1110 // - Full Screen Activity OR 1111 // - On top of Home and our stack is NOT home 1112 if (!r.finishing && r.visible && (r.fullscreen || 1113 (!isHomeStack() && r.frontOfTask && tasks.get(taskNdx).mOnTopOfHome))) { 1114 return false; 1115 } 1116 } 1117 } 1118 } 1119 1120 return true; 1121 } 1122 1123 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1124 ActivityRecord r = topRunningActivityLocked(null); 1125 if (r != null) { 1126 ensureActivitiesVisibleLocked(r, starting, null, configChanges); 1127 } 1128 } 1129 1130 /** 1131 * Make sure that all activities that need to be visible (that is, they 1132 * currently can be seen by the user) actually are. 1133 */ 1134 final void ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1135 String onlyThisProcess, int configChanges) { 1136 if (DEBUG_VISBILITY) Slog.v( 1137 TAG, "ensureActivitiesVisible behind " + top 1138 + " configChanges=0x" + Integer.toHexString(configChanges)); 1139 1140 if (mTranslucentActivityWaiting != top) { 1141 mUndrawnActivitiesBelowTopTranslucent.clear(); 1142 if (mTranslucentActivityWaiting != null) { 1143 // Call the callback with a timeout indication. 1144 notifyActivityDrawnLocked(null); 1145 mTranslucentActivityWaiting = null; 1146 } 1147 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1148 } 1149 1150 // If the top activity is not fullscreen, then we need to 1151 // make sure any activities under it are now visible. 1152 boolean aboveTop = true; 1153 boolean behindFullscreen = !isStackVisible(); 1154 1155 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1156 final TaskRecord task = mTaskHistory.get(taskNdx); 1157 final ArrayList<ActivityRecord> activities = task.mActivities; 1158 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1159 final ActivityRecord r = activities.get(activityNdx); 1160 if (r.finishing) { 1161 continue; 1162 } 1163 if (aboveTop && r != top) { 1164 continue; 1165 } 1166 aboveTop = false; 1167 if (!behindFullscreen) { 1168 if (DEBUG_VISBILITY) Slog.v( 1169 TAG, "Make visible? " + r + " finishing=" + r.finishing 1170 + " state=" + r.state); 1171 1172 final boolean doThisProcess = onlyThisProcess == null 1173 || onlyThisProcess.equals(r.processName); 1174 1175 // First: if this is not the current activity being started, make 1176 // sure it matches the current configuration. 1177 if (r != starting && doThisProcess) { 1178 ensureActivityConfigurationLocked(r, 0); 1179 } 1180 1181 if (r.app == null || r.app.thread == null) { 1182 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1183 // This activity needs to be visible, but isn't even 1184 // running... get it started, but don't resume it 1185 // at this point. 1186 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1187 if (r != starting) { 1188 r.startFreezingScreenLocked(r.app, configChanges); 1189 } 1190 if (!r.visible) { 1191 if (DEBUG_VISBILITY) Slog.v( 1192 TAG, "Starting and making visible: " + r); 1193 setVisibile(r, true); 1194 } 1195 if (r != starting) { 1196 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1197 } 1198 } 1199 1200 } else if (r.visible) { 1201 // If this activity is already visible, then there is nothing 1202 // else to do here. 1203 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1204 r.stopFreezingScreenLocked(false); 1205 1206 } else if (onlyThisProcess == null) { 1207 // This activity is not currently visible, but is running. 1208 // Tell it to become visible. 1209 r.visible = true; 1210 if (r.state != ActivityState.RESUMED && r != starting) { 1211 // If this activity is paused, tell it 1212 // to now show its window. 1213 if (DEBUG_VISBILITY) Slog.v( 1214 TAG, "Making visible and scheduling visibility: " + r); 1215 try { 1216 if (mTranslucentActivityWaiting != null) { 1217 mUndrawnActivitiesBelowTopTranslucent.add(r); 1218 } 1219 setVisibile(r, true); 1220 r.sleeping = false; 1221 r.app.pendingUiClean = true; 1222 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1223 r.stopFreezingScreenLocked(false); 1224 } catch (Exception e) { 1225 // Just skip on any failure; we'll make it 1226 // visible when it next restarts. 1227 Slog.w(TAG, "Exception thrown making visibile: " 1228 + r.intent.getComponent(), e); 1229 } 1230 } 1231 } 1232 1233 // Aggregate current change flags. 1234 configChanges |= r.configChangeFlags; 1235 1236 if (r.fullscreen) { 1237 // At this point, nothing else needs to be shown 1238 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1239 behindFullscreen = true; 1240 } else if (!isHomeStack() && r.frontOfTask && task.mOnTopOfHome) { 1241 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1242 behindFullscreen = true; 1243 } 1244 } else { 1245 if (DEBUG_VISBILITY) Slog.v( 1246 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1247 + " state=" + r.state 1248 + " behindFullscreen=" + behindFullscreen); 1249 // Now for any activities that aren't visible to the user, make 1250 // sure they no longer are keeping the screen frozen. 1251 if (r.visible) { 1252 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1253 try { 1254 setVisibile(r, false); 1255 switch (r.state) { 1256 case STOPPING: 1257 case STOPPED: 1258 if (r.app != null && r.app.thread != null) { 1259 if (DEBUG_VISBILITY) Slog.v( 1260 TAG, "Scheduling invisibility: " + r); 1261 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1262 } 1263 break; 1264 1265 case INITIALIZING: 1266 case RESUMED: 1267 case PAUSING: 1268 case PAUSED: 1269 // This case created for transitioning activities from 1270 // translucent to opaque {@link Activity#convertToOpaque}. 1271 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1272 mStackSupervisor.mStoppingActivities.add(r); 1273 } 1274 mStackSupervisor.scheduleIdleLocked(); 1275 break; 1276 1277 default: 1278 break; 1279 } 1280 } catch (Exception e) { 1281 // Just skip on any failure; we'll make it 1282 // visible when it next restarts. 1283 Slog.w(TAG, "Exception thrown making hidden: " 1284 + r.intent.getComponent(), e); 1285 } 1286 } else { 1287 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1288 } 1289 } 1290 } 1291 } 1292 } 1293 1294 void convertToTranslucent(ActivityRecord r) { 1295 mTranslucentActivityWaiting = r; 1296 mUndrawnActivitiesBelowTopTranslucent.clear(); 1297 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1298 } 1299 1300 /** 1301 * Called as activities below the top translucent activity are redrawn. When the last one is 1302 * redrawn notify the top activity by calling 1303 * {@link Activity#onTranslucentConversionComplete}. 1304 * 1305 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1306 * occurred and the activity will be notified immediately. 1307 */ 1308 void notifyActivityDrawnLocked(ActivityRecord r) { 1309 mActivityContainer.setDrawn(); 1310 if ((r == null) 1311 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1312 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1313 // The last undrawn activity below the top has just been drawn. If there is an 1314 // opaque activity at the top, notify it that it can become translucent safely now. 1315 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1316 mTranslucentActivityWaiting = null; 1317 mUndrawnActivitiesBelowTopTranslucent.clear(); 1318 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1319 1320 if (waitingActivity != null) { 1321 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1322 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1323 try { 1324 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1325 waitingActivity.appToken, r != null); 1326 } catch (RemoteException e) { 1327 } 1328 } 1329 } 1330 } 1331 } 1332 1333 /** If any activities below the top running one are in the INITIALIZING state and they have a 1334 * starting window displayed then remove that starting window. It is possible that the activity 1335 * in this state will never resumed in which case that starting window will be orphaned. */ 1336 void cancelInitializingActivities() { 1337 final ActivityRecord topActivity = topRunningActivityLocked(null); 1338 boolean aboveTop = true; 1339 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1340 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1341 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1342 final ActivityRecord r = activities.get(activityNdx); 1343 if (aboveTop) { 1344 if (r == topActivity) { 1345 aboveTop = false; 1346 } 1347 continue; 1348 } 1349 1350 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1351 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1352 r.mStartingWindowShown = false; 1353 mWindowManager.removeAppStartingWindow(r.appToken); 1354 } 1355 } 1356 } 1357 } 1358 1359 /** 1360 * Ensure that the top activity in the stack is resumed. 1361 * 1362 * @param prev The previously resumed activity, for when in the process 1363 * of pausing; can be null to call from elsewhere. 1364 * 1365 * @return Returns true if something is being resumed, or false if 1366 * nothing happened. 1367 */ 1368 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1369 return resumeTopActivityLocked(prev, null); 1370 } 1371 1372 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1373 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1374 1375 ActivityRecord parent = mActivityContainer.mParentActivity; 1376 if ((parent != null && parent.state != ActivityState.RESUMED) || 1377 !mActivityContainer.isAttached()) { 1378 // Do not resume this stack if its parent is not resumed. 1379 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1380 return false; 1381 } 1382 1383 cancelInitializingActivities(); 1384 1385 // Find the first activity that is not finishing. 1386 ActivityRecord next = topRunningActivityLocked(null); 1387 1388 // Remember how we'll process this pause/resume situation, and ensure 1389 // that the state is reset however we wind up proceeding. 1390 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1391 mStackSupervisor.mUserLeaving = false; 1392 1393 if (next == null) { 1394 // There are no more activities! Let's just start up the 1395 // Launcher... 1396 ActivityOptions.abort(options); 1397 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1398 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1399 // Only resume home if on home display 1400 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1401 } 1402 1403 next.delayedResume = false; 1404 1405 // If the top activity is the resumed one, nothing to do. 1406 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1407 mStackSupervisor.allResumedActivitiesComplete()) { 1408 // Make sure we have executed any pending transitions, since there 1409 // should be nothing left to do at this point. 1410 mWindowManager.executeAppTransition(); 1411 mNoAnimActivities.clear(); 1412 ActivityOptions.abort(options); 1413 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1414 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1415 return false; 1416 } 1417 1418 final TaskRecord nextTask = next.task; 1419 final TaskRecord prevTask = prev != null ? prev.task : null; 1420 if (prevTask != null && prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1421 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1422 if (prevTask == nextTask) { 1423 prevTask.setFrontOfTask(); 1424 } else if (prevTask != topTask()) { 1425 // This task is going away but it was supposed to return to the home task. 1426 // Now the task above it has to return to the home task instead. 1427 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1428 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1429 } else { 1430 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1431 "resumeTopActivityLocked: Launching home next"); 1432 // Only resume home if on home display 1433 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1434 } 1435 } 1436 1437 // If we are sleeping, and there is no resumed activity, and the top 1438 // activity is paused, well that is the state we want. 1439 if (mService.isSleepingOrShuttingDown() 1440 && mLastPausedActivity == next 1441 && mStackSupervisor.allPausedActivitiesComplete()) { 1442 // Make sure we have executed any pending transitions, since there 1443 // should be nothing left to do at this point. 1444 mWindowManager.executeAppTransition(); 1445 mNoAnimActivities.clear(); 1446 ActivityOptions.abort(options); 1447 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1448 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1449 return false; 1450 } 1451 1452 // Make sure that the user who owns this activity is started. If not, 1453 // we will just leave it as is because someone should be bringing 1454 // another user's activities to the top of the stack. 1455 if (mService.mStartedUsers.get(next.userId) == null) { 1456 Slog.w(TAG, "Skipping resume of top activity " + next 1457 + ": user " + next.userId + " is stopped"); 1458 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1459 return false; 1460 } 1461 1462 // The activity may be waiting for stop, but that is no longer 1463 // appropriate for it. 1464 mStackSupervisor.mStoppingActivities.remove(next); 1465 mStackSupervisor.mGoingToSleepActivities.remove(next); 1466 next.sleeping = false; 1467 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1468 1469 next.updateOptionsLocked(options); 1470 1471 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1472 1473 // If we are currently pausing an activity, then don't do anything 1474 // until that is done. 1475 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1476 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1477 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1478 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1479 return false; 1480 } 1481 1482 // Okay we are now going to start a switch, to 'next'. We may first 1483 // have to pause the current activity, but this is an important point 1484 // where we have decided to go to 'next' so keep track of that. 1485 // XXX "App Redirected" dialog is getting too many false positives 1486 // at this point, so turn off for now. 1487 if (false) { 1488 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1489 long now = SystemClock.uptimeMillis(); 1490 final boolean inTime = mLastStartedActivity.startTime != 0 1491 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1492 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1493 final int nextUid = next.info.applicationInfo.uid; 1494 if (inTime && lastUid != nextUid 1495 && lastUid != next.launchedFromUid 1496 && mService.checkPermission( 1497 android.Manifest.permission.STOP_APP_SWITCHES, 1498 -1, next.launchedFromUid) 1499 != PackageManager.PERMISSION_GRANTED) { 1500 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1501 } else { 1502 next.startTime = now; 1503 mLastStartedActivity = next; 1504 } 1505 } else { 1506 next.startTime = SystemClock.uptimeMillis(); 1507 mLastStartedActivity = next; 1508 } 1509 } 1510 1511 // We need to start pausing the current activity so the top one 1512 // can be resumed... 1513 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1514 if (mResumedActivity != null) { 1515 pausing = true; 1516 startPausingLocked(userLeaving, false); 1517 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1518 } 1519 if (pausing) { 1520 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1521 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1522 // At this point we want to put the upcoming activity's process 1523 // at the top of the LRU list, since we know we will be needing it 1524 // very soon and it would be a waste to let it get killed if it 1525 // happens to be sitting towards the end. 1526 if (next.app != null && next.app.thread != null) { 1527 // No reason to do full oom adj update here; we'll let that 1528 // happen whenever it needs to later. 1529 mService.updateLruProcessLocked(next.app, true, null); 1530 } 1531 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1532 return true; 1533 } 1534 1535 // If the most recent activity was noHistory but was only stopped rather 1536 // than stopped+finished because the device went to sleep, we need to make 1537 // sure to finish it as we're making a new activity topmost. 1538 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1539 !mLastNoHistoryActivity.finishing) { 1540 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1541 " on new resume"); 1542 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1543 null, "no-history", false); 1544 mLastNoHistoryActivity = null; 1545 } 1546 1547 if (prev != null && prev != next) { 1548 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1549 prev.waitingVisible = true; 1550 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1551 if (DEBUG_SWITCH) Slog.v( 1552 TAG, "Resuming top, waiting visible to hide: " + prev); 1553 } else { 1554 // The next activity is already visible, so hide the previous 1555 // activity's windows right now so we can show the new one ASAP. 1556 // We only do this if the previous is finishing, which should mean 1557 // it is on top of the one being resumed so hiding it quickly 1558 // is good. Otherwise, we want to do the normal route of allowing 1559 // the resumed activity to be shown so we can decide if the 1560 // previous should actually be hidden depending on whether the 1561 // new one is found to be full-screen or not. 1562 if (prev.finishing) { 1563 mWindowManager.setAppVisibility(prev.appToken, false); 1564 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1565 + prev + ", waitingVisible=" 1566 + (prev != null ? prev.waitingVisible : null) 1567 + ", nowVisible=" + next.nowVisible); 1568 } else { 1569 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1570 + prev + ", waitingVisible=" 1571 + (prev != null ? prev.waitingVisible : null) 1572 + ", nowVisible=" + next.nowVisible); 1573 } 1574 } 1575 } 1576 1577 // Launching this app's activity, make sure the app is no longer 1578 // considered stopped. 1579 try { 1580 AppGlobals.getPackageManager().setPackageStoppedState( 1581 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1582 } catch (RemoteException e1) { 1583 } catch (IllegalArgumentException e) { 1584 Slog.w(TAG, "Failed trying to unstop package " 1585 + next.packageName + ": " + e); 1586 } 1587 1588 // We are starting up the next activity, so tell the window manager 1589 // that the previous one will be hidden soon. This way it can know 1590 // to ignore it when computing the desired screen orientation. 1591 boolean anim = true; 1592 if (prev != null) { 1593 if (prev.finishing) { 1594 if (DEBUG_TRANSITION) Slog.v(TAG, 1595 "Prepare close transition: prev=" + prev); 1596 if (mNoAnimActivities.contains(prev)) { 1597 anim = false; 1598 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1599 } else { 1600 mWindowManager.prepareAppTransition(prev.task == next.task 1601 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1602 : AppTransition.TRANSIT_TASK_CLOSE, false); 1603 } 1604 mWindowManager.setAppWillBeHidden(prev.appToken); 1605 mWindowManager.setAppVisibility(prev.appToken, false); 1606 } else { 1607 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1608 if (mNoAnimActivities.contains(next)) { 1609 anim = false; 1610 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1611 } else { 1612 mWindowManager.prepareAppTransition(prev.task == next.task 1613 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1614 : AppTransition.TRANSIT_TASK_OPEN, false); 1615 } 1616 } 1617 if (false) { 1618 mWindowManager.setAppWillBeHidden(prev.appToken); 1619 mWindowManager.setAppVisibility(prev.appToken, false); 1620 } 1621 } else { 1622 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1623 if (mNoAnimActivities.contains(next)) { 1624 anim = false; 1625 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1626 } else { 1627 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1628 } 1629 } 1630 1631 Bundle resumeAnimOptions = null; 1632 if (anim) { 1633 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1634 if (opts != null) { 1635 resumeAnimOptions = opts.toBundle(); 1636 } 1637 next.applyOptionsLocked(); 1638 } else { 1639 next.clearOptionsLocked(); 1640 } 1641 1642 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1643 if (next.app != null && next.app.thread != null) { 1644 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1645 1646 // This activity is now becoming visible. 1647 mWindowManager.setAppVisibility(next.appToken, true); 1648 1649 // schedule launch ticks to collect information about slow apps. 1650 next.startLaunchTickingLocked(); 1651 1652 ActivityRecord lastResumedActivity = 1653 lastStack == null ? null :lastStack.mResumedActivity; 1654 ActivityState lastState = next.state; 1655 1656 mService.updateCpuStats(); 1657 1658 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1659 next.state = ActivityState.RESUMED; 1660 mResumedActivity = next; 1661 next.task.touchActiveTime(); 1662 mService.addRecentTaskLocked(next.task); 1663 mService.updateLruProcessLocked(next.app, true, null); 1664 updateLRUListLocked(next); 1665 mService.updateOomAdjLocked(); 1666 1667 // Have the window manager re-evaluate the orientation of 1668 // the screen based on the new activity order. 1669 boolean notUpdated = true; 1670 if (mStackSupervisor.isFrontStack(this)) { 1671 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1672 mService.mConfiguration, 1673 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1674 if (config != null) { 1675 next.frozenBeforeDestroy = true; 1676 } 1677 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1678 } 1679 1680 if (notUpdated) { 1681 // The configuration update wasn't able to keep the existing 1682 // instance of the activity, and instead started a new one. 1683 // We should be all done, but let's just make sure our activity 1684 // is still at the top and schedule another run if something 1685 // weird happened. 1686 ActivityRecord nextNext = topRunningActivityLocked(null); 1687 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1688 "Activity config changed during resume: " + next 1689 + ", new next: " + nextNext); 1690 if (nextNext != next) { 1691 // Do over! 1692 mStackSupervisor.scheduleResumeTopActivities(); 1693 } 1694 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1695 mNoAnimActivities.clear(); 1696 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1697 return true; 1698 } 1699 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1700 return false; 1701 } 1702 1703 try { 1704 // Deliver all pending results. 1705 ArrayList<ResultInfo> a = next.results; 1706 if (a != null) { 1707 final int N = a.size(); 1708 if (!next.finishing && N > 0) { 1709 if (DEBUG_RESULTS) Slog.v( 1710 TAG, "Delivering results to " + next 1711 + ": " + a); 1712 next.app.thread.scheduleSendResult(next.appToken, a); 1713 } 1714 } 1715 1716 if (next.newIntents != null) { 1717 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1718 } 1719 1720 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1721 next.userId, System.identityHashCode(next), 1722 next.task.taskId, next.shortComponentName); 1723 1724 next.sleeping = false; 1725 mService.showAskCompatModeDialogLocked(next); 1726 next.app.pendingUiClean = true; 1727 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1728 next.clearOptionsLocked(); 1729 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1730 mService.isNextTransitionForward(), resumeAnimOptions); 1731 1732 mStackSupervisor.checkReadyForSleepLocked(); 1733 1734 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1735 } catch (Exception e) { 1736 // Whoops, need to restart this activity! 1737 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1738 + lastState + ": " + next); 1739 next.state = lastState; 1740 if (lastStack != null) { 1741 lastStack.mResumedActivity = lastResumedActivity; 1742 } 1743 Slog.i(TAG, "Restarting because process died: " + next); 1744 if (!next.hasBeenLaunched) { 1745 next.hasBeenLaunched = true; 1746 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1747 mStackSupervisor.isFrontStack(lastStack)) { 1748 mWindowManager.setAppStartingWindow( 1749 next.appToken, next.packageName, next.theme, 1750 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1751 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1752 next.windowFlags, null, true); 1753 } 1754 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1755 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1756 return true; 1757 } 1758 1759 // From this point on, if something goes wrong there is no way 1760 // to recover the activity. 1761 try { 1762 next.visible = true; 1763 completeResumeLocked(next); 1764 } catch (Exception e) { 1765 // If any exception gets thrown, toss away this 1766 // activity and try the next one. 1767 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1768 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1769 "resume-exception", true); 1770 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1771 return true; 1772 } 1773 next.stopped = false; 1774 1775 } else { 1776 // Whoops, need to restart this activity! 1777 if (!next.hasBeenLaunched) { 1778 next.hasBeenLaunched = true; 1779 } else { 1780 if (SHOW_APP_STARTING_PREVIEW) { 1781 mWindowManager.setAppStartingWindow( 1782 next.appToken, next.packageName, next.theme, 1783 mService.compatibilityInfoForPackageLocked( 1784 next.info.applicationInfo), 1785 next.nonLocalizedLabel, 1786 next.labelRes, next.icon, next.logo, next.windowFlags, 1787 null, true); 1788 } 1789 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1790 } 1791 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1792 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1793 } 1794 1795 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1796 return true; 1797 } 1798 1799 private void insertTaskAtTop(TaskRecord task) { 1800 // If this is being moved to the top by another activity or being launched from the home 1801 // activity, set mOnTopOfHome accordingly. 1802 if (isOnHomeDisplay()) { 1803 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1804 final boolean fromHome = lastStack.isHomeStack(); 1805 if (!isHomeStack() && (fromHome || topTask() != task)) { 1806 task.mOnTopOfHome = fromHome; 1807 } 1808 } else { 1809 task.mOnTopOfHome = false; 1810 } 1811 1812 mTaskHistory.remove(task); 1813 // Now put task at top. 1814 int stackNdx = mTaskHistory.size(); 1815 if (!isCurrentProfileLocked(task.userId)) { 1816 // Put non-current user tasks below current user tasks. 1817 while (--stackNdx >= 0) { 1818 if (!isCurrentProfileLocked(mTaskHistory.get(stackNdx).userId)) { 1819 break; 1820 } 1821 } 1822 ++stackNdx; 1823 } 1824 mTaskHistory.add(stackNdx, task); 1825 } 1826 1827 final void startActivityLocked(ActivityRecord r, boolean newTask, 1828 boolean doResume, boolean keepCurTransition, Bundle options) { 1829 TaskRecord rTask = r.task; 1830 final int taskId = rTask.taskId; 1831 if (taskForIdLocked(taskId) == null || newTask) { 1832 // Last activity in task had been removed or ActivityManagerService is reusing task. 1833 // Insert or replace. 1834 // Might not even be in. 1835 insertTaskAtTop(rTask); 1836 mWindowManager.moveTaskToTop(taskId); 1837 } 1838 TaskRecord task = null; 1839 if (!newTask) { 1840 // If starting in an existing task, find where that is... 1841 boolean startIt = true; 1842 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1843 task = mTaskHistory.get(taskNdx); 1844 if (task == r.task) { 1845 // Here it is! Now, if this is not yet visible to the 1846 // user, then just add it without starting; it will 1847 // get started when the user navigates back to it. 1848 if (!startIt) { 1849 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1850 + task, new RuntimeException("here").fillInStackTrace()); 1851 task.addActivityToTop(r); 1852 r.putInHistory(); 1853 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1854 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1855 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1856 r.userId, r.info.configChanges); 1857 if (VALIDATE_TOKENS) { 1858 validateAppTokensLocked(); 1859 } 1860 ActivityOptions.abort(options); 1861 return; 1862 } 1863 break; 1864 } else if (task.numFullscreen > 0) { 1865 startIt = false; 1866 } 1867 } 1868 } 1869 1870 // Place a new activity at top of stack, so it is next to interact 1871 // with the user. 1872 1873 // If we are not placing the new activity frontmost, we do not want 1874 // to deliver the onUserLeaving callback to the actual frontmost 1875 // activity 1876 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1877 mStackSupervisor.mUserLeaving = false; 1878 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1879 "startActivity() behind front, mUserLeaving=false"); 1880 } 1881 1882 task = r.task; 1883 1884 // Slot the activity into the history stack and proceed 1885 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1886 new RuntimeException("here").fillInStackTrace()); 1887 task.addActivityToTop(r); 1888 task.setFrontOfTask(); 1889 1890 r.putInHistory(); 1891 if (!isHomeStack() || numActivities() > 0) { 1892 // We want to show the starting preview window if we are 1893 // switching to a new task, or the next activity's process is 1894 // not currently running. 1895 boolean showStartingIcon = newTask; 1896 ProcessRecord proc = r.app; 1897 if (proc == null) { 1898 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1899 } 1900 if (proc == null || proc.thread == null) { 1901 showStartingIcon = true; 1902 } 1903 if (DEBUG_TRANSITION) Slog.v(TAG, 1904 "Prepare open transition: starting " + r); 1905 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1906 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1907 mNoAnimActivities.add(r); 1908 } else { 1909 mWindowManager.prepareAppTransition(newTask 1910 ? AppTransition.TRANSIT_TASK_OPEN 1911 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1912 mNoAnimActivities.remove(r); 1913 } 1914 r.updateOptionsLocked(options); 1915 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1916 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1917 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1918 r.info.configChanges); 1919 boolean doShow = true; 1920 if (newTask) { 1921 // Even though this activity is starting fresh, we still need 1922 // to reset it to make sure we apply affinities to move any 1923 // existing activities from other tasks in to it. 1924 // If the caller has requested that the target task be 1925 // reset, then do so. 1926 if ((r.intent.getFlags() 1927 & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1928 resetTaskIfNeededLocked(r, r); 1929 doShow = topRunningNonDelayedActivityLocked(null) == r; 1930 } 1931 } 1932 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1933 // Figure out if we are transitioning from another activity that is 1934 // "has the same starting icon" as the next one. This allows the 1935 // window manager to keep the previous window it had previously 1936 // created, if it still had one. 1937 ActivityRecord prev = mResumedActivity; 1938 if (prev != null) { 1939 // We don't want to reuse the previous starting preview if: 1940 // (1) The current activity is in a different task. 1941 if (prev.task != r.task) { 1942 prev = null; 1943 } 1944 // (2) The current activity is already displayed. 1945 else if (prev.nowVisible) { 1946 prev = null; 1947 } 1948 } 1949 mWindowManager.setAppStartingWindow( 1950 r.appToken, r.packageName, r.theme, 1951 mService.compatibilityInfoForPackageLocked( 1952 r.info.applicationInfo), r.nonLocalizedLabel, 1953 r.labelRes, r.icon, r.logo, r.windowFlags, 1954 prev != null ? prev.appToken : null, showStartingIcon); 1955 r.mStartingWindowShown = true; 1956 } 1957 } else { 1958 // If this is the first activity, don't do any fancy animations, 1959 // because there is nothing for it to animate on top of. 1960 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1961 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1962 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1963 r.info.configChanges); 1964 ActivityOptions.abort(options); 1965 } 1966 if (VALIDATE_TOKENS) { 1967 validateAppTokensLocked(); 1968 } 1969 1970 if (doResume) { 1971 mStackSupervisor.resumeTopActivitiesLocked(); 1972 } 1973 } 1974 1975 final void validateAppTokensLocked() { 1976 mValidateAppTokens.clear(); 1977 mValidateAppTokens.ensureCapacity(numActivities()); 1978 final int numTasks = mTaskHistory.size(); 1979 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1980 TaskRecord task = mTaskHistory.get(taskNdx); 1981 final ArrayList<ActivityRecord> activities = task.mActivities; 1982 if (activities.isEmpty()) { 1983 continue; 1984 } 1985 TaskGroup group = new TaskGroup(); 1986 group.taskId = task.taskId; 1987 mValidateAppTokens.add(group); 1988 final int numActivities = activities.size(); 1989 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1990 final ActivityRecord r = activities.get(activityNdx); 1991 group.tokens.add(r.appToken); 1992 } 1993 } 1994 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 1995 } 1996 1997 /** 1998 * Perform a reset of the given task, if needed as part of launching it. 1999 * Returns the new HistoryRecord at the top of the task. 2000 */ 2001 /** 2002 * Helper method for #resetTaskIfNeededLocked. 2003 * We are inside of the task being reset... we'll either finish this activity, push it out 2004 * for another task, or leave it as-is. 2005 * @param task The task containing the Activity (taskTop) that might be reset. 2006 * @param forceReset 2007 * @return An ActivityOptions that needs to be processed. 2008 */ 2009 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 2010 ActivityOptions topOptions = null; 2011 2012 int replyChainEnd = -1; 2013 boolean canMoveOptions = true; 2014 2015 // We only do this for activities that are not the root of the task (since if we finish 2016 // the root, we may no longer have the task!). 2017 final ArrayList<ActivityRecord> activities = task.mActivities; 2018 final int numActivities = activities.size(); 2019 for (int i = numActivities - 1; i > 0; --i ) { 2020 ActivityRecord target = activities.get(i); 2021 2022 final int flags = target.info.flags; 2023 final boolean finishOnTaskLaunch = 2024 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2025 final boolean allowTaskReparenting = 2026 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2027 final boolean clearWhenTaskReset = 2028 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2029 2030 if (!finishOnTaskLaunch 2031 && !clearWhenTaskReset 2032 && target.resultTo != null) { 2033 // If this activity is sending a reply to a previous 2034 // activity, we can't do anything with it now until 2035 // we reach the start of the reply chain. 2036 // XXX note that we are assuming the result is always 2037 // to the previous activity, which is almost always 2038 // the case but we really shouldn't count on. 2039 if (replyChainEnd < 0) { 2040 replyChainEnd = i; 2041 } 2042 } else if (!finishOnTaskLaunch 2043 && !clearWhenTaskReset 2044 && allowTaskReparenting 2045 && target.taskAffinity != null 2046 && !target.taskAffinity.equals(task.affinity)) { 2047 // If this activity has an affinity for another 2048 // task, then we need to move it out of here. We will 2049 // move it as far out of the way as possible, to the 2050 // bottom of the activity stack. This also keeps it 2051 // correctly ordered with any activities we previously 2052 // moved. 2053 final ThumbnailHolder newThumbHolder; 2054 final TaskRecord targetTask; 2055 final ActivityRecord bottom = 2056 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2057 mTaskHistory.get(0).mActivities.get(0) : null; 2058 if (bottom != null && target.taskAffinity != null 2059 && target.taskAffinity.equals(bottom.task.affinity)) { 2060 // If the activity currently at the bottom has the 2061 // same task affinity as the one we are moving, 2062 // then merge it into the same task. 2063 targetTask = bottom.task; 2064 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 2065 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2066 + " out to bottom task " + bottom.task); 2067 } else { 2068 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2069 null, null, null, false); 2070 newThumbHolder = targetTask; 2071 targetTask.affinityIntent = target.intent; 2072 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2073 + " out to new task " + target.task); 2074 } 2075 2076 target.thumbHolder = newThumbHolder; 2077 2078 final int targetTaskId = targetTask.taskId; 2079 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2080 2081 boolean noOptions = canMoveOptions; 2082 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2083 for (int srcPos = start; srcPos >= i; --srcPos) { 2084 final ActivityRecord p = activities.get(srcPos); 2085 if (p.finishing) { 2086 continue; 2087 } 2088 2089 ThumbnailHolder curThumbHolder = p.thumbHolder; 2090 canMoveOptions = false; 2091 if (noOptions && topOptions == null) { 2092 topOptions = p.takeOptionsLocked(); 2093 if (topOptions != null) { 2094 noOptions = false; 2095 } 2096 } 2097 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2098 + task + " adding to task=" + targetTask 2099 + " Callers=" + Debug.getCallers(4)); 2100 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2101 + " out to target's task " + target.task); 2102 p.setTask(targetTask, curThumbHolder, false); 2103 targetTask.addActivityAtBottom(p); 2104 2105 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2106 } 2107 2108 mWindowManager.moveTaskToBottom(targetTaskId); 2109 if (VALIDATE_TOKENS) { 2110 validateAppTokensLocked(); 2111 } 2112 2113 replyChainEnd = -1; 2114 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2115 // If the activity should just be removed -- either 2116 // because it asks for it, or the task should be 2117 // cleared -- then finish it and anything that is 2118 // part of its reply chain. 2119 int end; 2120 if (clearWhenTaskReset) { 2121 // In this case, we want to finish this activity 2122 // and everything above it, so be sneaky and pretend 2123 // like these are all in the reply chain. 2124 end = numActivities - 1; 2125 } else if (replyChainEnd < 0) { 2126 end = i; 2127 } else { 2128 end = replyChainEnd; 2129 } 2130 boolean noOptions = canMoveOptions; 2131 for (int srcPos = i; srcPos <= end; srcPos++) { 2132 ActivityRecord p = activities.get(srcPos); 2133 if (p.finishing) { 2134 continue; 2135 } 2136 canMoveOptions = false; 2137 if (noOptions && topOptions == null) { 2138 topOptions = p.takeOptionsLocked(); 2139 if (topOptions != null) { 2140 noOptions = false; 2141 } 2142 } 2143 if (DEBUG_TASKS) Slog.w(TAG, 2144 "resetTaskIntendedTask: calling finishActivity on " + p); 2145 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2146 end--; 2147 srcPos--; 2148 } 2149 } 2150 replyChainEnd = -1; 2151 } else { 2152 // If we were in the middle of a chain, well the 2153 // activity that started it all doesn't want anything 2154 // special, so leave it all as-is. 2155 replyChainEnd = -1; 2156 } 2157 } 2158 2159 return topOptions; 2160 } 2161 2162 /** 2163 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2164 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2165 * @param affinityTask The task we are looking for an affinity to. 2166 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2167 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2168 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2169 */ 2170 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2171 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2172 int replyChainEnd = -1; 2173 final int taskId = task.taskId; 2174 final String taskAffinity = task.affinity; 2175 2176 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2177 final int numActivities = activities.size(); 2178 // Do not operate on the root Activity. 2179 for (int i = numActivities - 1; i > 0; --i) { 2180 ActivityRecord target = activities.get(i); 2181 2182 final int flags = target.info.flags; 2183 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2184 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2185 2186 if (target.resultTo != null) { 2187 // If this activity is sending a reply to a previous 2188 // activity, we can't do anything with it now until 2189 // we reach the start of the reply chain. 2190 // XXX note that we are assuming the result is always 2191 // to the previous activity, which is almost always 2192 // the case but we really shouldn't count on. 2193 if (replyChainEnd < 0) { 2194 replyChainEnd = i; 2195 } 2196 } else if (topTaskIsHigher 2197 && allowTaskReparenting 2198 && taskAffinity != null 2199 && taskAffinity.equals(target.taskAffinity)) { 2200 // This activity has an affinity for our task. Either remove it if we are 2201 // clearing or move it over to our task. Note that 2202 // we currently punt on the case where we are resetting a 2203 // task that is not at the top but who has activities above 2204 // with an affinity to it... this is really not a normal 2205 // case, and we will need to later pull that task to the front 2206 // and usually at that point we will do the reset and pick 2207 // up those remaining activities. (This only happens if 2208 // someone starts an activity in a new task from an activity 2209 // in a task that is not currently on top.) 2210 if (forceReset || finishOnTaskLaunch) { 2211 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2212 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2213 for (int srcPos = start; srcPos >= i; --srcPos) { 2214 final ActivityRecord p = activities.get(srcPos); 2215 if (p.finishing) { 2216 continue; 2217 } 2218 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2219 } 2220 } else { 2221 if (taskInsertionPoint < 0) { 2222 taskInsertionPoint = task.mActivities.size(); 2223 2224 } 2225 2226 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2227 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2228 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2229 for (int srcPos = start; srcPos >= i; --srcPos) { 2230 final ActivityRecord p = activities.get(srcPos); 2231 p.setTask(task, null, false); 2232 task.addActivityAtIndex(taskInsertionPoint, p); 2233 2234 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2235 + " to stack at " + task, 2236 new RuntimeException("here").fillInStackTrace()); 2237 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2238 + " in to resetting task " + task); 2239 mWindowManager.setAppGroupId(p.appToken, taskId); 2240 } 2241 mWindowManager.moveTaskToTop(taskId); 2242 if (VALIDATE_TOKENS) { 2243 validateAppTokensLocked(); 2244 } 2245 2246 // Now we've moved it in to place... but what if this is 2247 // a singleTop activity and we have put it on top of another 2248 // instance of the same activity? Then we drop the instance 2249 // below so it remains singleTop. 2250 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2251 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2252 int targetNdx = taskActivities.indexOf(target); 2253 if (targetNdx > 0) { 2254 ActivityRecord p = taskActivities.get(targetNdx - 1); 2255 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2256 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2257 false); 2258 } 2259 } 2260 } 2261 } 2262 2263 replyChainEnd = -1; 2264 } 2265 } 2266 return taskInsertionPoint; 2267 } 2268 2269 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2270 ActivityRecord newActivity) { 2271 boolean forceReset = 2272 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2273 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2274 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2275 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2276 forceReset = true; 2277 } 2278 } 2279 2280 final TaskRecord task = taskTop.task; 2281 2282 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2283 * for remaining tasks. Used for later tasks to reparent to task. */ 2284 boolean taskFound = false; 2285 2286 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2287 ActivityOptions topOptions = null; 2288 2289 // Preserve the location for reparenting in the new task. 2290 int reparentInsertionPoint = -1; 2291 2292 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2293 final TaskRecord targetTask = mTaskHistory.get(i); 2294 2295 if (targetTask == task) { 2296 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2297 taskFound = true; 2298 } else { 2299 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2300 taskFound, forceReset, reparentInsertionPoint); 2301 } 2302 } 2303 2304 int taskNdx = mTaskHistory.indexOf(task); 2305 do { 2306 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2307 } while (taskTop == null && taskNdx >= 0); 2308 2309 if (topOptions != null) { 2310 // If we got some ActivityOptions from an activity on top that 2311 // was removed from the task, propagate them to the new real top. 2312 if (taskTop != null) { 2313 taskTop.updateOptionsLocked(topOptions); 2314 } else { 2315 topOptions.abort(); 2316 } 2317 } 2318 2319 return taskTop; 2320 } 2321 2322 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2323 String resultWho, int requestCode, int resultCode, Intent data) { 2324 2325 if (callingUid > 0) { 2326 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2327 data, r.getUriPermissionsLocked()); 2328 } 2329 2330 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2331 + " : who=" + resultWho + " req=" + requestCode 2332 + " res=" + resultCode + " data=" + data); 2333 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2334 try { 2335 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2336 list.add(new ResultInfo(resultWho, requestCode, 2337 resultCode, data)); 2338 r.app.thread.scheduleSendResult(r.appToken, list); 2339 return; 2340 } catch (Exception e) { 2341 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2342 } 2343 } 2344 2345 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2346 } 2347 2348 private void adjustFocusedActivityLocked(ActivityRecord r) { 2349 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2350 ActivityRecord next = topRunningActivityLocked(null); 2351 if (next != r) { 2352 final TaskRecord task = r.task; 2353 if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) { 2354 mStackSupervisor.moveHomeToTop(); 2355 } 2356 } 2357 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2358 if (top != null) { 2359 mService.setFocusedActivityLocked(top); 2360 } 2361 } 2362 } 2363 2364 final void stopActivityLocked(ActivityRecord r) { 2365 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2366 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2367 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2368 if (!r.finishing) { 2369 if (!mService.isSleeping()) { 2370 if (DEBUG_STATES) { 2371 Slog.d(TAG, "no-history finish of " + r); 2372 } 2373 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2374 "no-history", false); 2375 } else { 2376 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2377 + " on stop because we're just sleeping"); 2378 } 2379 } 2380 } 2381 2382 if (r.app != null && r.app.thread != null) { 2383 adjustFocusedActivityLocked(r); 2384 r.resumeKeyDispatchingLocked(); 2385 try { 2386 r.stopped = false; 2387 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2388 + " (stop requested)"); 2389 r.state = ActivityState.STOPPING; 2390 if (DEBUG_VISBILITY) Slog.v( 2391 TAG, "Stopping visible=" + r.visible + " for " + r); 2392 if (!r.visible) { 2393 mWindowManager.setAppVisibility(r.appToken, false); 2394 } 2395 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2396 if (mService.isSleepingOrShuttingDown()) { 2397 r.setSleeping(true); 2398 } 2399 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2400 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2401 } catch (Exception e) { 2402 // Maybe just ignore exceptions here... if the process 2403 // has crashed, our death notification will clean things 2404 // up. 2405 Slog.w(TAG, "Exception thrown during pause", e); 2406 // Just in case, assume it to be stopped. 2407 r.stopped = true; 2408 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2409 r.state = ActivityState.STOPPED; 2410 if (r.configDestroy) { 2411 destroyActivityLocked(r, true, false, "stop-except"); 2412 } 2413 } 2414 } 2415 } 2416 2417 /** 2418 * @return Returns true if the activity is being finished, false if for 2419 * some reason it is being left as-is. 2420 */ 2421 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2422 Intent resultData, String reason, boolean oomAdj) { 2423 ActivityRecord r = isInStackLocked(token); 2424 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2425 TAG, "Finishing activity token=" + token + " r=" 2426 + ", result=" + resultCode + ", data=" + resultData 2427 + ", reason=" + reason); 2428 if (r == null) { 2429 return false; 2430 } 2431 2432 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2433 return true; 2434 } 2435 2436 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2437 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2438 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2439 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2440 ActivityRecord r = activities.get(activityNdx); 2441 if (r.resultTo == self && r.requestCode == requestCode) { 2442 if ((r.resultWho == null && resultWho == null) || 2443 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2444 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2445 false); 2446 } 2447 } 2448 } 2449 } 2450 mService.updateOomAdjLocked(); 2451 } 2452 2453 final void finishTopRunningActivityLocked(ProcessRecord app) { 2454 ActivityRecord r = topRunningActivityLocked(null); 2455 if (r != null && r.app == app) { 2456 // If the top running activity is from this crashing 2457 // process, then terminate it to avoid getting in a loop. 2458 Slog.w(TAG, " Force finishing activity " 2459 + r.intent.getComponent().flattenToShortString()); 2460 int taskNdx = mTaskHistory.indexOf(r.task); 2461 int activityNdx = r.task.mActivities.indexOf(r); 2462 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2463 // Also terminate any activities below it that aren't yet 2464 // stopped, to avoid a situation where one will get 2465 // re-start our crashing activity once it gets resumed again. 2466 --activityNdx; 2467 if (activityNdx < 0) { 2468 do { 2469 --taskNdx; 2470 if (taskNdx < 0) { 2471 break; 2472 } 2473 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2474 } while (activityNdx < 0); 2475 } 2476 if (activityNdx >= 0) { 2477 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2478 if (r.state == ActivityState.RESUMED 2479 || r.state == ActivityState.PAUSING 2480 || r.state == ActivityState.PAUSED) { 2481 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2482 Slog.w(TAG, " Force finishing activity " 2483 + r.intent.getComponent().flattenToShortString()); 2484 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2485 } 2486 } 2487 } 2488 } 2489 } 2490 2491 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2492 ArrayList<ActivityRecord> activities = r.task.mActivities; 2493 for (int index = activities.indexOf(r); index >= 0; --index) { 2494 ActivityRecord cur = activities.get(index); 2495 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2496 break; 2497 } 2498 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2499 } 2500 return true; 2501 } 2502 2503 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2504 // send the result 2505 ActivityRecord resultTo = r.resultTo; 2506 if (resultTo != null) { 2507 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2508 + " who=" + r.resultWho + " req=" + r.requestCode 2509 + " res=" + resultCode + " data=" + resultData); 2510 if (r.info.applicationInfo.uid > 0) { 2511 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2512 resultTo.packageName, resultData, 2513 resultTo.getUriPermissionsLocked()); 2514 } 2515 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2516 resultData); 2517 r.resultTo = null; 2518 } 2519 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2520 2521 // Make sure this HistoryRecord is not holding on to other resources, 2522 // because clients have remote IPC references to this object so we 2523 // can't assume that will go away and want to avoid circular IPC refs. 2524 r.results = null; 2525 r.pendingResults = null; 2526 r.newIntents = null; 2527 r.icicle = null; 2528 } 2529 2530 /** 2531 * @return Returns true if this activity has been removed from the history 2532 * list, or false if it is still in the list and will be removed later. 2533 */ 2534 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2535 String reason, boolean oomAdj) { 2536 if (r.finishing) { 2537 Slog.w(TAG, "Duplicate finish request for " + r); 2538 return false; 2539 } 2540 2541 r.makeFinishing(); 2542 final TaskRecord task = r.task; 2543 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2544 r.userId, System.identityHashCode(r), 2545 task.taskId, r.shortComponentName, reason); 2546 final ArrayList<ActivityRecord> activities = task.mActivities; 2547 final int index = activities.indexOf(r); 2548 if (index < (activities.size() - 1)) { 2549 task.setFrontOfTask(); 2550 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2551 // If the caller asked that this activity (and all above it) 2552 // be cleared when the task is reset, don't lose that information, 2553 // but propagate it up to the next activity. 2554 ActivityRecord next = activities.get(index+1); 2555 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2556 } 2557 } 2558 2559 r.pauseKeyDispatchingLocked(); 2560 2561 adjustFocusedActivityLocked(r); 2562 2563 finishActivityResultsLocked(r, resultCode, resultData); 2564 2565 if (mResumedActivity == r) { 2566 boolean endTask = index <= 0; 2567 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2568 "Prepare close transition: finishing " + r); 2569 mWindowManager.prepareAppTransition(endTask 2570 ? AppTransition.TRANSIT_TASK_CLOSE 2571 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2572 2573 // Tell window manager to prepare for this one to be removed. 2574 mWindowManager.setAppVisibility(r.appToken, false); 2575 2576 if (mPausingActivity == null) { 2577 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2578 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2579 startPausingLocked(false, false); 2580 } 2581 2582 if (endTask) { 2583 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2584 } 2585 } else if (r.state != ActivityState.PAUSING) { 2586 // If the activity is PAUSING, we will complete the finish once 2587 // it is done pausing; else we can just directly finish it here. 2588 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2589 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2590 } else { 2591 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2592 } 2593 2594 return false; 2595 } 2596 2597 static final int FINISH_IMMEDIATELY = 0; 2598 static final int FINISH_AFTER_PAUSE = 1; 2599 static final int FINISH_AFTER_VISIBLE = 2; 2600 2601 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2602 // First things first: if this activity is currently visible, 2603 // and the resumed activity is not yet visible, then hold off on 2604 // finishing until the resumed one becomes visible. 2605 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2606 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2607 mStackSupervisor.mStoppingActivities.add(r); 2608 if (mStackSupervisor.mStoppingActivities.size() > 3 2609 || r.frontOfTask && mTaskHistory.size() <= 1) { 2610 // If we already have a few activities waiting to stop, 2611 // then give up on things going idle and start clearing 2612 // them out. Or if r is the last of activity of the last task the stack 2613 // will be empty and must be cleared immediately. 2614 mStackSupervisor.scheduleIdleLocked(); 2615 } else { 2616 mStackSupervisor.checkReadyForSleepLocked(); 2617 } 2618 } 2619 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2620 + " (finish requested)"); 2621 r.state = ActivityState.STOPPING; 2622 if (oomAdj) { 2623 mService.updateOomAdjLocked(); 2624 } 2625 return r; 2626 } 2627 2628 // make sure the record is cleaned out of other places. 2629 mStackSupervisor.mStoppingActivities.remove(r); 2630 mStackSupervisor.mGoingToSleepActivities.remove(r); 2631 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2632 if (mResumedActivity == r) { 2633 mResumedActivity = null; 2634 } 2635 final ActivityState prevState = r.state; 2636 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2637 r.state = ActivityState.FINISHING; 2638 2639 if (mode == FINISH_IMMEDIATELY 2640 || prevState == ActivityState.STOPPED 2641 || prevState == ActivityState.INITIALIZING) { 2642 // If this activity is already stopped, we can just finish 2643 // it right now. 2644 boolean activityRemoved = destroyActivityLocked(r, true, 2645 oomAdj, "finish-imm"); 2646 if (activityRemoved) { 2647 mStackSupervisor.resumeTopActivitiesLocked(); 2648 } 2649 return activityRemoved ? null : r; 2650 } 2651 2652 // Need to go through the full pause cycle to get this 2653 // activity into the stopped state and then finish it. 2654 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2655 mStackSupervisor.mFinishingActivities.add(r); 2656 r.resumeKeyDispatchingLocked(); 2657 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2658 return r; 2659 } 2660 2661 void finishAllActivitiesLocked() { 2662 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2663 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2664 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2665 final ActivityRecord r = activities.get(activityNdx); 2666 if (r.finishing) { 2667 continue; 2668 } 2669 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2670 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2671 } 2672 } 2673 } 2674 2675 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2676 Intent resultData) { 2677 final ActivityRecord srec = ActivityRecord.forToken(token); 2678 final TaskRecord task = srec.task; 2679 final ArrayList<ActivityRecord> activities = task.mActivities; 2680 final int start = activities.indexOf(srec); 2681 if (!mTaskHistory.contains(task) || (start < 0)) { 2682 return false; 2683 } 2684 int finishTo = start - 1; 2685 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2686 boolean foundParentInTask = false; 2687 final ComponentName dest = destIntent.getComponent(); 2688 if (start > 0 && dest != null) { 2689 for (int i = finishTo; i >= 0; i--) { 2690 ActivityRecord r = activities.get(i); 2691 if (r.info.packageName.equals(dest.getPackageName()) && 2692 r.info.name.equals(dest.getClassName())) { 2693 finishTo = i; 2694 parent = r; 2695 foundParentInTask = true; 2696 break; 2697 } 2698 } 2699 } 2700 2701 IActivityController controller = mService.mController; 2702 if (controller != null) { 2703 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2704 if (next != null) { 2705 // ask watcher if this is allowed 2706 boolean resumeOK = true; 2707 try { 2708 resumeOK = controller.activityResuming(next.packageName); 2709 } catch (RemoteException e) { 2710 mService.mController = null; 2711 Watchdog.getInstance().setActivityController(null); 2712 } 2713 2714 if (!resumeOK) { 2715 return false; 2716 } 2717 } 2718 } 2719 final long origId = Binder.clearCallingIdentity(); 2720 for (int i = start; i > finishTo; i--) { 2721 ActivityRecord r = activities.get(i); 2722 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2723 // Only return the supplied result for the first activity finished 2724 resultCode = Activity.RESULT_CANCELED; 2725 resultData = null; 2726 } 2727 2728 if (parent != null && foundParentInTask) { 2729 final int parentLaunchMode = parent.info.launchMode; 2730 final int destIntentFlags = destIntent.getFlags(); 2731 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2732 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2733 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2734 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2735 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2736 } else { 2737 try { 2738 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2739 destIntent.getComponent(), 0, srec.userId); 2740 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2741 null, aInfo, null, null, parent.appToken, null, 2742 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2743 0, null, true, null, null); 2744 foundParentInTask = res == ActivityManager.START_SUCCESS; 2745 } catch (RemoteException e) { 2746 foundParentInTask = false; 2747 } 2748 requestFinishActivityLocked(parent.appToken, resultCode, 2749 resultData, "navigate-up", true); 2750 } 2751 } 2752 Binder.restoreCallingIdentity(origId); 2753 return foundParentInTask; 2754 } 2755 /** 2756 * Perform the common clean-up of an activity record. This is called both 2757 * as part of destroyActivityLocked() (when destroying the client-side 2758 * representation) and cleaning things up as a result of its hosting 2759 * processing going away, in which case there is no remaining client-side 2760 * state to destroy so only the cleanup here is needed. 2761 */ 2762 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2763 boolean setState) { 2764 if (mResumedActivity == r) { 2765 mResumedActivity = null; 2766 } 2767 if (mPausingActivity == r) { 2768 mPausingActivity = null; 2769 } 2770 mService.clearFocusedActivity(r); 2771 2772 r.configDestroy = false; 2773 r.frozenBeforeDestroy = false; 2774 2775 if (setState) { 2776 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2777 r.state = ActivityState.DESTROYED; 2778 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2779 r.app = null; 2780 } 2781 2782 // Make sure this record is no longer in the pending finishes list. 2783 // This could happen, for example, if we are trimming activities 2784 // down to the max limit while they are still waiting to finish. 2785 mStackSupervisor.mFinishingActivities.remove(r); 2786 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2787 2788 // Remove any pending results. 2789 if (r.finishing && r.pendingResults != null) { 2790 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2791 PendingIntentRecord rec = apr.get(); 2792 if (rec != null) { 2793 mService.cancelIntentSenderLocked(rec, false); 2794 } 2795 } 2796 r.pendingResults = null; 2797 } 2798 2799 if (cleanServices) { 2800 cleanUpActivityServicesLocked(r); 2801 } 2802 2803 // Get rid of any pending idle timeouts. 2804 removeTimeoutsForActivityLocked(r); 2805 } 2806 2807 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2808 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2809 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2810 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2811 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2812 r.finishLaunchTickingLocked(); 2813 } 2814 2815 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2816 mStackSupervisor.removeChildActivityContainers(r); 2817 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2818 r.makeFinishing(); 2819 if (DEBUG_ADD_REMOVE) { 2820 RuntimeException here = new RuntimeException("here"); 2821 here.fillInStackTrace(); 2822 Slog.i(TAG, "Removing activity " + r + " from stack"); 2823 } 2824 r.takeFromHistory(); 2825 removeTimeoutsForActivityLocked(r); 2826 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2827 r.state = ActivityState.DESTROYED; 2828 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2829 r.app = null; 2830 mWindowManager.removeAppToken(r.appToken); 2831 if (VALIDATE_TOKENS) { 2832 validateAppTokensLocked(); 2833 } 2834 final TaskRecord task = r.task; 2835 if (task != null && task.removeActivity(r)) { 2836 if (DEBUG_STACK) Slog.i(TAG, 2837 "removeActivityFromHistoryLocked: last activity removed from " + this); 2838 if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) { 2839 mStackSupervisor.moveHomeToTop(); 2840 } 2841 removeTask(task); 2842 } 2843 cleanUpActivityServicesLocked(r); 2844 r.removeUriPermissionsLocked(); 2845 } 2846 2847 /** 2848 * Perform clean-up of service connections in an activity record. 2849 */ 2850 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2851 // Throw away any services that have been bound by this activity. 2852 if (r.connections != null) { 2853 Iterator<ConnectionRecord> it = r.connections.iterator(); 2854 while (it.hasNext()) { 2855 ConnectionRecord c = it.next(); 2856 mService.mServices.removeConnectionLocked(c, null, r); 2857 } 2858 r.connections = null; 2859 } 2860 } 2861 2862 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2863 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2864 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2865 mHandler.sendMessage(msg); 2866 } 2867 2868 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2869 boolean lastIsOpaque = false; 2870 boolean activityRemoved = false; 2871 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2872 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2873 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2874 final ActivityRecord r = activities.get(activityNdx); 2875 if (r.finishing) { 2876 continue; 2877 } 2878 if (r.fullscreen) { 2879 lastIsOpaque = true; 2880 } 2881 if (owner != null && r.app != owner) { 2882 continue; 2883 } 2884 if (!lastIsOpaque) { 2885 continue; 2886 } 2887 // We can destroy this one if we have its icicle saved and 2888 // it is not in the process of pausing/stopping/finishing. 2889 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2890 && r.haveState && !r.visible && r.stopped 2891 && r.state != ActivityState.DESTROYING 2892 && r.state != ActivityState.DESTROYED) { 2893 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2894 + " resumed=" + mResumedActivity 2895 + " pausing=" + mPausingActivity); 2896 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2897 activityRemoved = true; 2898 } 2899 } 2900 } 2901 } 2902 if (activityRemoved) { 2903 mStackSupervisor.resumeTopActivitiesLocked(); 2904 } 2905 } 2906 2907 /** 2908 * Destroy the current CLIENT SIDE instance of an activity. This may be 2909 * called both when actually finishing an activity, or when performing 2910 * a configuration switch where we destroy the current client-side object 2911 * but then create a new client-side object for this same HistoryRecord. 2912 */ 2913 final boolean destroyActivityLocked(ActivityRecord r, 2914 boolean removeFromApp, boolean oomAdj, String reason) { 2915 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2916 TAG, "Removing activity from " + reason + ": token=" + r 2917 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2918 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2919 r.userId, System.identityHashCode(r), 2920 r.task.taskId, r.shortComponentName, reason); 2921 2922 boolean removedFromHistory = false; 2923 2924 cleanUpActivityLocked(r, false, false); 2925 2926 final boolean hadApp = r.app != null; 2927 2928 if (hadApp) { 2929 if (removeFromApp) { 2930 r.app.activities.remove(r); 2931 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2932 mService.mHeavyWeightProcess = null; 2933 mService.mHandler.sendEmptyMessage( 2934 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2935 } 2936 if (r.app.activities.isEmpty()) { 2937 // No longer have activities, so update LRU list and oom adj. 2938 mService.updateLruProcessLocked(r.app, false, null); 2939 mService.updateOomAdjLocked(); 2940 } 2941 } 2942 2943 boolean skipDestroy = false; 2944 2945 try { 2946 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2947 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2948 r.configChangeFlags); 2949 } catch (Exception e) { 2950 // We can just ignore exceptions here... if the process 2951 // has crashed, our death notification will clean things 2952 // up. 2953 //Slog.w(TAG, "Exception thrown during finish", e); 2954 if (r.finishing) { 2955 removeActivityFromHistoryLocked(r); 2956 removedFromHistory = true; 2957 skipDestroy = true; 2958 } 2959 } 2960 2961 r.nowVisible = false; 2962 2963 // If the activity is finishing, we need to wait on removing it 2964 // from the list to give it a chance to do its cleanup. During 2965 // that time it may make calls back with its token so we need to 2966 // be able to find it on the list and so we don't want to remove 2967 // it from the list yet. Otherwise, we can just immediately put 2968 // it in the destroyed state since we are not removing it from the 2969 // list. 2970 if (r.finishing && !skipDestroy) { 2971 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2972 + " (destroy requested)"); 2973 r.state = ActivityState.DESTROYING; 2974 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2975 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2976 } else { 2977 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 2978 r.state = ActivityState.DESTROYED; 2979 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2980 r.app = null; 2981 } 2982 } else { 2983 // remove this record from the history. 2984 if (r.finishing) { 2985 removeActivityFromHistoryLocked(r); 2986 removedFromHistory = true; 2987 } else { 2988 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 2989 r.state = ActivityState.DESTROYED; 2990 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2991 r.app = null; 2992 } 2993 } 2994 2995 r.configChangeFlags = 0; 2996 2997 if (!mLRUActivities.remove(r) && hadApp) { 2998 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 2999 } 3000 3001 return removedFromHistory; 3002 } 3003 3004 final void activityDestroyedLocked(IBinder token) { 3005 final long origId = Binder.clearCallingIdentity(); 3006 try { 3007 ActivityRecord r = ActivityRecord.forToken(token); 3008 if (r != null) { 3009 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3010 } 3011 3012 if (isInStackLocked(token) != null) { 3013 if (r.state == ActivityState.DESTROYING) { 3014 cleanUpActivityLocked(r, true, false); 3015 removeActivityFromHistoryLocked(r); 3016 } 3017 } 3018 mStackSupervisor.resumeTopActivitiesLocked(); 3019 } finally { 3020 Binder.restoreCallingIdentity(origId); 3021 } 3022 } 3023 3024 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3025 ProcessRecord app, String listName) { 3026 int i = list.size(); 3027 if (DEBUG_CLEANUP) Slog.v( 3028 TAG, "Removing app " + app + " from list " + listName 3029 + " with " + i + " entries"); 3030 while (i > 0) { 3031 i--; 3032 ActivityRecord r = list.get(i); 3033 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3034 if (r.app == app) { 3035 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3036 list.remove(i); 3037 removeTimeoutsForActivityLocked(r); 3038 } 3039 } 3040 } 3041 3042 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3043 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3044 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3045 "mStoppingActivities"); 3046 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3047 "mGoingToSleepActivities"); 3048 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3049 "mWaitingVisibleActivities"); 3050 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3051 "mFinishingActivities"); 3052 3053 boolean hasVisibleActivities = false; 3054 3055 // Clean out the history list. 3056 int i = numActivities(); 3057 if (DEBUG_CLEANUP) Slog.v( 3058 TAG, "Removing app " + app + " from history with " + i + " entries"); 3059 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3060 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3061 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3062 final ActivityRecord r = activities.get(activityNdx); 3063 --i; 3064 if (DEBUG_CLEANUP) Slog.v( 3065 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3066 if (r.app == app) { 3067 boolean remove; 3068 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3069 // Don't currently have state for the activity, or 3070 // it is finishing -- always remove it. 3071 remove = true; 3072 } else if (r.launchCount > 2 && 3073 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3074 // We have launched this activity too many times since it was 3075 // able to run, so give up and remove it. 3076 remove = true; 3077 } else { 3078 // The process may be gone, but the activity lives on! 3079 remove = false; 3080 } 3081 if (remove) { 3082 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3083 RuntimeException here = new RuntimeException("here"); 3084 here.fillInStackTrace(); 3085 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3086 + ": haveState=" + r.haveState 3087 + " stateNotNeeded=" + r.stateNotNeeded 3088 + " finishing=" + r.finishing 3089 + " state=" + r.state, here); 3090 } 3091 if (!r.finishing) { 3092 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3093 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3094 r.userId, System.identityHashCode(r), 3095 r.task.taskId, r.shortComponentName, 3096 "proc died without state saved"); 3097 if (r.state == ActivityState.RESUMED) { 3098 mService.updateUsageStats(r, false); 3099 } 3100 } 3101 removeActivityFromHistoryLocked(r); 3102 3103 } else { 3104 // We have the current state for this activity, so 3105 // it can be restarted later when needed. 3106 if (localLOGV) Slog.v( 3107 TAG, "Keeping entry, setting app to null"); 3108 if (r.visible) { 3109 hasVisibleActivities = true; 3110 } 3111 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3112 + r); 3113 r.app = null; 3114 r.nowVisible = false; 3115 if (!r.haveState) { 3116 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3117 "App died, clearing saved state of " + r); 3118 r.icicle = null; 3119 } 3120 } 3121 3122 cleanUpActivityLocked(r, true, true); 3123 } 3124 } 3125 } 3126 3127 return hasVisibleActivities; 3128 } 3129 3130 final void updateTransitLocked(int transit, Bundle options) { 3131 if (options != null) { 3132 ActivityRecord r = topRunningActivityLocked(null); 3133 if (r != null && r.state != ActivityState.RESUMED) { 3134 r.updateOptionsLocked(options); 3135 } else { 3136 ActivityOptions.abort(options); 3137 } 3138 } 3139 mWindowManager.prepareAppTransition(transit, false); 3140 } 3141 3142 void moveHomeTaskToTop() { 3143 final int top = mTaskHistory.size() - 1; 3144 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3145 final TaskRecord task = mTaskHistory.get(taskNdx); 3146 if (task.isHomeTask()) { 3147 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task); 3148 mTaskHistory.remove(taskNdx); 3149 mTaskHistory.add(top, task); 3150 mWindowManager.moveTaskToTop(task.taskId); 3151 return; 3152 } 3153 } 3154 } 3155 3156 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3157 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3158 3159 final int numTasks = mTaskHistory.size(); 3160 final int index = mTaskHistory.indexOf(tr); 3161 if (numTasks == 0 || index < 0) { 3162 // nothing to do! 3163 if (reason != null && 3164 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3165 ActivityOptions.abort(options); 3166 } else { 3167 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3168 } 3169 return; 3170 } 3171 3172 moveToFront(); 3173 3174 // Shift all activities with this task up to the top 3175 // of the stack, keeping them in the same internal order. 3176 insertTaskAtTop(tr); 3177 3178 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3179 if (reason != null && 3180 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3181 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3182 ActivityRecord r = topRunningActivityLocked(null); 3183 if (r != null) { 3184 mNoAnimActivities.add(r); 3185 } 3186 ActivityOptions.abort(options); 3187 } else { 3188 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3189 } 3190 3191 mWindowManager.moveTaskToTop(tr.taskId); 3192 3193 mStackSupervisor.resumeTopActivitiesLocked(); 3194 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3195 3196 if (VALIDATE_TOKENS) { 3197 validateAppTokensLocked(); 3198 } 3199 } 3200 3201 /** 3202 * Worker method for rearranging history stack. Implements the function of moving all 3203 * activities for a specific task (gathering them if disjoint) into a single group at the 3204 * bottom of the stack. 3205 * 3206 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3207 * to premeptively cancel the move. 3208 * 3209 * @param taskId The taskId to collect and move to the bottom. 3210 * @return Returns true if the move completed, false if not. 3211 */ 3212 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3213 final TaskRecord tr = taskForIdLocked(taskId); 3214 if (tr == null) { 3215 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3216 return false; 3217 } 3218 3219 Slog.i(TAG, "moveTaskToBack: " + tr); 3220 3221 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3222 3223 // If we have a watcher, preflight the move before committing to it. First check 3224 // for *other* available tasks, but if none are available, then try again allowing the 3225 // current task to be selected. 3226 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3227 ActivityRecord next = topRunningActivityLocked(null, taskId); 3228 if (next == null) { 3229 next = topRunningActivityLocked(null, 0); 3230 } 3231 if (next != null) { 3232 // ask watcher if this is allowed 3233 boolean moveOK = true; 3234 try { 3235 moveOK = mService.mController.activityResuming(next.packageName); 3236 } catch (RemoteException e) { 3237 mService.mController = null; 3238 Watchdog.getInstance().setActivityController(null); 3239 } 3240 if (!moveOK) { 3241 return false; 3242 } 3243 } 3244 } 3245 3246 if (DEBUG_TRANSITION) Slog.v(TAG, 3247 "Prepare to back transition: task=" + taskId); 3248 3249 mTaskHistory.remove(tr); 3250 mTaskHistory.add(0, tr); 3251 3252 // There is an assumption that moving a task to the back moves it behind the home activity. 3253 // We make sure here that some activity in the stack will launch home. 3254 ActivityRecord lastActivity = null; 3255 int numTasks = mTaskHistory.size(); 3256 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3257 final TaskRecord task = mTaskHistory.get(taskNdx); 3258 if (task.mOnTopOfHome) { 3259 break; 3260 } 3261 if (taskNdx == 1) { 3262 // Set the last task before tr to go to home. 3263 task.mOnTopOfHome = true; 3264 } 3265 } 3266 3267 if (reason != null && 3268 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3269 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3270 ActivityRecord r = topRunningActivityLocked(null); 3271 if (r != null) { 3272 mNoAnimActivities.add(r); 3273 } 3274 } else { 3275 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3276 } 3277 mWindowManager.moveTaskToBottom(taskId); 3278 3279 if (VALIDATE_TOKENS) { 3280 validateAppTokensLocked(); 3281 } 3282 3283 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3284 if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) { 3285 tr.mOnTopOfHome = false; 3286 return mStackSupervisor.resumeHomeActivity(null); 3287 } 3288 3289 mStackSupervisor.resumeTopActivitiesLocked(); 3290 return true; 3291 } 3292 3293 static final void logStartActivity(int tag, ActivityRecord r, 3294 TaskRecord task) { 3295 final Uri data = r.intent.getData(); 3296 final String strData = data != null ? data.toSafeString() : null; 3297 3298 EventLog.writeEvent(tag, 3299 r.userId, System.identityHashCode(r), task.taskId, 3300 r.shortComponentName, r.intent.getAction(), 3301 r.intent.getType(), strData, r.intent.getFlags()); 3302 } 3303 3304 /** 3305 * Make sure the given activity matches the current configuration. Returns 3306 * false if the activity had to be destroyed. Returns true if the 3307 * configuration is the same, or the activity will remain running as-is 3308 * for whatever reason. Ensures the HistoryRecord is updated with the 3309 * correct configuration and all other bookkeeping is handled. 3310 */ 3311 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3312 int globalChanges) { 3313 if (mConfigWillChange) { 3314 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3315 "Skipping config check (will change): " + r); 3316 return true; 3317 } 3318 3319 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3320 "Ensuring correct configuration: " + r); 3321 3322 // Short circuit: if the two configurations are the exact same 3323 // object (the common case), then there is nothing to do. 3324 Configuration newConfig = mService.mConfiguration; 3325 if (r.configuration == newConfig && !r.forceNewConfig) { 3326 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3327 "Configuration unchanged in " + r); 3328 return true; 3329 } 3330 3331 // We don't worry about activities that are finishing. 3332 if (r.finishing) { 3333 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3334 "Configuration doesn't matter in finishing " + r); 3335 r.stopFreezingScreenLocked(false); 3336 return true; 3337 } 3338 3339 // Okay we now are going to make this activity have the new config. 3340 // But then we need to figure out how it needs to deal with that. 3341 Configuration oldConfig = r.configuration; 3342 r.configuration = newConfig; 3343 3344 // Determine what has changed. May be nothing, if this is a config 3345 // that has come back from the app after going idle. In that case 3346 // we just want to leave the official config object now in the 3347 // activity and do nothing else. 3348 final int changes = oldConfig.diff(newConfig); 3349 if (changes == 0 && !r.forceNewConfig) { 3350 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3351 "Configuration no differences in " + r); 3352 return true; 3353 } 3354 3355 // If the activity isn't currently running, just leave the new 3356 // configuration and it will pick that up next time it starts. 3357 if (r.app == null || r.app.thread == null) { 3358 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3359 "Configuration doesn't matter not running " + r); 3360 r.stopFreezingScreenLocked(false); 3361 r.forceNewConfig = false; 3362 return true; 3363 } 3364 3365 // Figure out how to handle the changes between the configurations. 3366 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3367 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3368 + Integer.toHexString(changes) + ", handles=0x" 3369 + Integer.toHexString(r.info.getRealConfigChanged()) 3370 + ", newConfig=" + newConfig); 3371 } 3372 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3373 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3374 r.configChangeFlags |= changes; 3375 r.startFreezingScreenLocked(r.app, globalChanges); 3376 r.forceNewConfig = false; 3377 if (r.app == null || r.app.thread == null) { 3378 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3379 "Config is destroying non-running " + r); 3380 destroyActivityLocked(r, true, false, "config"); 3381 } else if (r.state == ActivityState.PAUSING) { 3382 // A little annoying: we are waiting for this activity to 3383 // finish pausing. Let's not do anything now, but just 3384 // flag that it needs to be restarted when done pausing. 3385 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3386 "Config is skipping already pausing " + r); 3387 r.configDestroy = true; 3388 return true; 3389 } else if (r.state == ActivityState.RESUMED) { 3390 // Try to optimize this case: the configuration is changing 3391 // and we need to restart the top, resumed activity. 3392 // Instead of doing the normal handshaking, just say 3393 // "restart!". 3394 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3395 "Config is relaunching resumed " + r); 3396 relaunchActivityLocked(r, r.configChangeFlags, true); 3397 r.configChangeFlags = 0; 3398 } else { 3399 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3400 "Config is relaunching non-resumed " + r); 3401 relaunchActivityLocked(r, r.configChangeFlags, false); 3402 r.configChangeFlags = 0; 3403 } 3404 3405 // All done... tell the caller we weren't able to keep this 3406 // activity around. 3407 return false; 3408 } 3409 3410 // Default case: the activity can handle this new configuration, so 3411 // hand it over. Note that we don't need to give it the new 3412 // configuration, since we always send configuration changes to all 3413 // process when they happen so it can just use whatever configuration 3414 // it last got. 3415 if (r.app != null && r.app.thread != null) { 3416 try { 3417 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3418 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3419 } catch (RemoteException e) { 3420 // If process died, whatever. 3421 } 3422 } 3423 r.stopFreezingScreenLocked(false); 3424 3425 return true; 3426 } 3427 3428 private boolean relaunchActivityLocked(ActivityRecord r, 3429 int changes, boolean andResume) { 3430 List<ResultInfo> results = null; 3431 List<Intent> newIntents = null; 3432 if (andResume) { 3433 results = r.results; 3434 newIntents = r.newIntents; 3435 } 3436 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3437 + " with results=" + results + " newIntents=" + newIntents 3438 + " andResume=" + andResume); 3439 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3440 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3441 r.task.taskId, r.shortComponentName); 3442 3443 r.startFreezingScreenLocked(r.app, 0); 3444 3445 mStackSupervisor.removeChildActivityContainers(r); 3446 3447 try { 3448 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3449 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3450 + r); 3451 r.forceNewConfig = false; 3452 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3453 changes, !andResume, new Configuration(mService.mConfiguration)); 3454 // Note: don't need to call pauseIfSleepingLocked() here, because 3455 // the caller will only pass in 'andResume' if this activity is 3456 // currently resumed, which implies we aren't sleeping. 3457 } catch (RemoteException e) { 3458 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3459 } 3460 3461 if (andResume) { 3462 r.results = null; 3463 r.newIntents = null; 3464 r.state = ActivityState.RESUMED; 3465 } else { 3466 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3467 r.state = ActivityState.PAUSED; 3468 } 3469 3470 return true; 3471 } 3472 3473 boolean willActivityBeVisibleLocked(IBinder token) { 3474 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3475 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3476 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3477 final ActivityRecord r = activities.get(activityNdx); 3478 if (r.appToken == token) { 3479 return true; 3480 } 3481 if (r.fullscreen && !r.finishing) { 3482 return false; 3483 } 3484 } 3485 } 3486 final ActivityRecord r = ActivityRecord.forToken(token); 3487 if (r == null) { 3488 return false; 3489 } 3490 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3491 + " would have returned true for r=" + r); 3492 return !r.finishing; 3493 } 3494 3495 void closeSystemDialogsLocked() { 3496 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3497 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3498 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3499 final ActivityRecord r = activities.get(activityNdx); 3500 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3501 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3502 } 3503 } 3504 } 3505 } 3506 3507 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3508 boolean didSomething = false; 3509 TaskRecord lastTask = null; 3510 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3511 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3512 int numActivities = activities.size(); 3513 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3514 ActivityRecord r = activities.get(activityNdx); 3515 final boolean samePackage = r.packageName.equals(name) 3516 || (name == null && r.userId == userId); 3517 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3518 && (samePackage || r.task == lastTask) 3519 && (r.app == null || evenPersistent || !r.app.persistent)) { 3520 if (!doit) { 3521 if (r.finishing) { 3522 // If this activity is just finishing, then it is not 3523 // interesting as far as something to stop. 3524 continue; 3525 } 3526 return true; 3527 } 3528 didSomething = true; 3529 Slog.i(TAG, " Force finishing activity " + r); 3530 if (samePackage) { 3531 if (r.app != null) { 3532 r.app.removed = true; 3533 } 3534 r.app = null; 3535 } 3536 lastTask = r.task; 3537 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3538 true)) { 3539 // r has been deleted from mActivities, accommodate. 3540 --numActivities; 3541 --activityNdx; 3542 } 3543 } 3544 } 3545 } 3546 return didSomething; 3547 } 3548 3549 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3550 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3551 final TaskRecord task = mTaskHistory.get(taskNdx); 3552 ActivityRecord r = null; 3553 ActivityRecord top = null; 3554 int numActivities = 0; 3555 int numRunning = 0; 3556 final ArrayList<ActivityRecord> activities = task.mActivities; 3557 if (activities.isEmpty()) { 3558 continue; 3559 } 3560 if (!allowed && !task.isHomeTask() && task.creatorUid != callingUid) { 3561 continue; 3562 } 3563 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3564 r = activities.get(activityNdx); 3565 3566 // Initialize state for next task if needed. 3567 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3568 top = r; 3569 numActivities = numRunning = 0; 3570 } 3571 3572 // Add 'r' into the current task. 3573 numActivities++; 3574 if (r.app != null && r.app.thread != null) { 3575 numRunning++; 3576 } 3577 3578 if (localLOGV) Slog.v( 3579 TAG, r.intent.getComponent().flattenToShortString() 3580 + ": task=" + r.task); 3581 } 3582 3583 RunningTaskInfo ci = new RunningTaskInfo(); 3584 ci.id = task.taskId; 3585 ci.baseActivity = r.intent.getComponent(); 3586 ci.topActivity = top.intent.getComponent(); 3587 ci.lastActiveTime = task.lastActiveTime; 3588 3589 if (top.thumbHolder != null) { 3590 ci.description = top.thumbHolder.lastDescription; 3591 } 3592 ci.numActivities = numActivities; 3593 ci.numRunning = numRunning; 3594 //System.out.println( 3595 // "#" + maxNum + ": " + " descr=" + ci.description); 3596 list.add(ci); 3597 } 3598 } 3599 3600 public void unhandledBackLocked() { 3601 final int top = mTaskHistory.size() - 1; 3602 if (DEBUG_SWITCH) Slog.d( 3603 TAG, "Performing unhandledBack(): top activity at " + top); 3604 if (top >= 0) { 3605 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3606 int activityTop = activities.size() - 1; 3607 if (activityTop > 0) { 3608 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3609 "unhandled-back", true); 3610 } 3611 } 3612 } 3613 3614 /** 3615 * Reset local parameters because an app's activity died. 3616 * @param app The app of the activity that died. 3617 * @return result from removeHistoryRecordsForAppLocked. 3618 */ 3619 boolean handleAppDiedLocked(ProcessRecord app) { 3620 if (mPausingActivity != null && mPausingActivity.app == app) { 3621 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3622 "App died while pausing: " + mPausingActivity); 3623 mPausingActivity = null; 3624 } 3625 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3626 mLastPausedActivity = null; 3627 mLastNoHistoryActivity = null; 3628 } 3629 3630 return removeHistoryRecordsForAppLocked(app); 3631 } 3632 3633 void handleAppCrashLocked(ProcessRecord app) { 3634 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3635 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3636 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3637 final ActivityRecord r = activities.get(activityNdx); 3638 if (r.app == app) { 3639 Slog.w(TAG, " Force finishing activity " 3640 + r.intent.getComponent().flattenToShortString()); 3641 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3642 } 3643 } 3644 } 3645 } 3646 3647 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3648 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3649 boolean printed = false; 3650 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3651 final TaskRecord task = mTaskHistory.get(taskNdx); 3652 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3653 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3654 dumpClient, dumpPackage, needSep, header, 3655 " Task id #" + task.taskId); 3656 if (printed) { 3657 header = null; 3658 } 3659 } 3660 return printed; 3661 } 3662 3663 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3664 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3665 3666 if ("all".equals(name)) { 3667 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3668 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3669 } 3670 } else if ("top".equals(name)) { 3671 final int top = mTaskHistory.size() - 1; 3672 if (top >= 0) { 3673 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3674 int listTop = list.size() - 1; 3675 if (listTop >= 0) { 3676 activities.add(list.get(listTop)); 3677 } 3678 } 3679 } else { 3680 ItemMatcher matcher = new ItemMatcher(); 3681 matcher.build(name); 3682 3683 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3684 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3685 if (matcher.match(r1, r1.intent.getComponent())) { 3686 activities.add(r1); 3687 } 3688 } 3689 } 3690 } 3691 3692 return activities; 3693 } 3694 3695 ActivityRecord restartPackage(String packageName) { 3696 ActivityRecord starting = topRunningActivityLocked(null); 3697 3698 // All activities that came from the package must be 3699 // restarted as if there was a config change. 3700 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3701 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3702 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3703 final ActivityRecord a = activities.get(activityNdx); 3704 if (a.info.packageName.equals(packageName)) { 3705 a.forceNewConfig = true; 3706 if (starting != null && a == starting && a.visible) { 3707 a.startFreezingScreenLocked(starting.app, 3708 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3709 } 3710 } 3711 } 3712 } 3713 3714 return starting; 3715 } 3716 3717 void removeTask(TaskRecord task) { 3718 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3719 mWindowManager.removeTask(task.taskId); 3720 final ActivityRecord r = mResumedActivity; 3721 if (r != null && r.task == task) { 3722 mResumedActivity = null; 3723 } 3724 3725 final int taskNdx = mTaskHistory.indexOf(task); 3726 final int topTaskNdx = mTaskHistory.size() - 1; 3727 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3728 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3729 } 3730 mTaskHistory.remove(task); 3731 3732 if (task.mActivities.isEmpty()) { 3733 final boolean isVoiceSession = task.voiceSession != null; 3734 if (isVoiceSession) { 3735 try { 3736 task.voiceSession.taskFinished(task.intent, task.taskId); 3737 } catch (RemoteException e) { 3738 } 3739 } 3740 if (task.autoRemoveFromRecents() || isVoiceSession) { 3741 // Task creator asked to remove this when done, or this task was a voice 3742 // interaction, so it should not remain on the recent tasks list. 3743 mService.mRecentTasks.remove(task); 3744 } 3745 } 3746 3747 if (mTaskHistory.isEmpty()) { 3748 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3749 if (isOnHomeDisplay()) { 3750 mStackSupervisor.moveHomeStack(!isHomeStack()); 3751 } 3752 if (mStacks != null) { 3753 mStacks.remove(this); 3754 mStacks.add(0, this); 3755 } 3756 } 3757 } 3758 3759 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 3760 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 3761 boolean toTop) { 3762 TaskRecord task = new TaskRecord(taskId, info, intent, voiceSession, voiceInteractor); 3763 addTask(task, toTop, false); 3764 return task; 3765 } 3766 3767 ArrayList<TaskRecord> getAllTasks() { 3768 return new ArrayList<TaskRecord>(mTaskHistory); 3769 } 3770 3771 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 3772 task.stack = this; 3773 if (toTop) { 3774 insertTaskAtTop(task); 3775 } else { 3776 mTaskHistory.add(0, task); 3777 } 3778 if (!moving && task.voiceSession != null) { 3779 try { 3780 task.voiceSession.taskStarted(task.intent, task.taskId); 3781 } catch (RemoteException e) { 3782 } 3783 } 3784 } 3785 3786 public int getStackId() { 3787 return mStackId; 3788 } 3789 3790 @Override 3791 public String toString() { 3792 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3793 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3794 } 3795} 3796