ActivityStack.java revision df88d73092c62a1a3cd2b2056ca63ae2e70cc238
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 com.android.internal.os.BatteryStatsImpl; 40import com.android.server.Watchdog; 41import com.android.server.am.ActivityManagerService.ItemMatcher; 42import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 43import com.android.server.wm.AppTransition; 44import com.android.server.wm.TaskGroup; 45import com.android.server.wm.WindowManagerService; 46 47import android.app.Activity; 48import android.app.ActivityManager; 49import android.app.ActivityOptions; 50import android.app.AppGlobals; 51import android.app.IActivityController; 52import android.app.IThumbnailReceiver; 53import android.app.ResultInfo; 54import android.app.ActivityManager.RunningTaskInfo; 55import android.content.ComponentName; 56import android.content.Intent; 57import android.content.pm.ActivityInfo; 58import android.content.pm.PackageManager; 59import android.content.res.Configuration; 60import android.content.res.Resources; 61import android.graphics.Bitmap; 62import android.net.Uri; 63import android.os.Binder; 64import android.os.Bundle; 65import android.os.Debug; 66import android.os.Handler; 67import android.os.IBinder; 68import android.os.Looper; 69import android.os.Message; 70import android.os.RemoteException; 71import android.os.SystemClock; 72import android.os.Trace; 73import android.os.UserHandle; 74import android.util.EventLog; 75import android.util.Slog; 76import android.view.Display; 77 78import java.io.FileDescriptor; 79import java.io.PrintWriter; 80import java.lang.ref.WeakReference; 81import java.util.ArrayList; 82import java.util.Iterator; 83import java.util.List; 84import java.util.Objects; 85 86/** 87 * State and management of a single stack of activities. 88 */ 89final class ActivityStack { 90 91 // Ticks during which we check progress while waiting for an app to launch. 92 static final int LAUNCH_TICK = 500; 93 94 // How long we wait until giving up on the last activity to pause. This 95 // is short because it directly impacts the responsiveness of starting the 96 // next activity. 97 static final int PAUSE_TIMEOUT = 500; 98 99 // How long we wait for the activity to tell us it has stopped before 100 // giving up. This is a good amount of time because we really need this 101 // from the application in order to get its saved state. 102 static final int STOP_TIMEOUT = 10*1000; 103 104 // How long we wait until giving up on an activity telling us it has 105 // finished destroying itself. 106 static final int DESTROY_TIMEOUT = 10*1000; 107 108 // How long until we reset a task when the user returns to it. Currently 109 // disabled. 110 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 111 112 // How long between activity launches that we consider safe to not warn 113 // the user about an unexpected activity being launched on top. 114 static final long START_WARN_TIME = 5*1000; 115 116 // Set to false to disable the preview that is shown while a new activity 117 // is being started. 118 static final boolean SHOW_APP_STARTING_PREVIEW = true; 119 120 // How long to wait for all background Activities to redraw following a call to 121 // convertToTranslucent(). 122 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 123 124 static final boolean SCREENSHOT_FORCE_565 = ActivityManager 125 .isLowRamDeviceStatic() ? true : false; 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 boolean okToShow(ActivityRecord r) { 344 return r.userId == mCurrentUser 345 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 346 } 347 348 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 349 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 350 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 351 if (r != null) { 352 return r; 353 } 354 } 355 return null; 356 } 357 358 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 359 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 360 final TaskRecord task = mTaskHistory.get(taskNdx); 361 final ArrayList<ActivityRecord> activities = task.mActivities; 362 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 363 ActivityRecord r = activities.get(activityNdx); 364 if (!r.finishing && !r.delayedResume && r != notTop && okToShow(r)) { 365 return r; 366 } 367 } 368 } 369 return null; 370 } 371 372 /** 373 * This is a simplified version of topRunningActivityLocked that provides a number of 374 * optional skip-over modes. It is intended for use with the ActivityController hook only. 375 * 376 * @param token If non-null, any history records matching this token will be skipped. 377 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 378 * 379 * @return Returns the HistoryRecord of the next activity on the stack. 380 */ 381 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 382 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 383 TaskRecord task = mTaskHistory.get(taskNdx); 384 if (task.taskId == taskId) { 385 continue; 386 } 387 ArrayList<ActivityRecord> activities = task.mActivities; 388 for (int i = activities.size() - 1; i >= 0; --i) { 389 final ActivityRecord r = activities.get(i); 390 // Note: the taskId check depends on real taskId fields being non-zero 391 if (!r.finishing && (token != r.appToken) && okToShow(r)) { 392 return r; 393 } 394 } 395 } 396 return null; 397 } 398 399 final ActivityRecord topActivity() { 400 // Iterate to find the first non-empty task stack. Note that this code can 401 // be simplified once we stop storing tasks with empty mActivities lists. 402 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 403 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 404 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 405 return activities.get(activityNdx); 406 } 407 } 408 return null; 409 } 410 411 final TaskRecord topTask() { 412 final int size = mTaskHistory.size(); 413 if (size > 0) { 414 return mTaskHistory.get(size - 1); 415 } 416 return null; 417 } 418 419 TaskRecord taskForIdLocked(int id) { 420 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 421 final TaskRecord task = mTaskHistory.get(taskNdx); 422 if (task.taskId == id) { 423 return task; 424 } 425 } 426 return null; 427 } 428 429 ActivityRecord isInStackLocked(IBinder token) { 430 final ActivityRecord r = ActivityRecord.forToken(token); 431 if (r != null) { 432 final TaskRecord task = r.task; 433 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 434 if (task.stack != this) Slog.w(TAG, 435 "Illegal state! task does not point to stack it is in."); 436 return r; 437 } 438 } 439 return null; 440 } 441 442 final boolean updateLRUListLocked(ActivityRecord r) { 443 final boolean hadit = mLRUActivities.remove(r); 444 mLRUActivities.add(r); 445 return hadit; 446 } 447 448 final boolean isHomeStack() { 449 return mStackId == HOME_STACK_ID; 450 } 451 452 final boolean isOnHomeDisplay() { 453 return isAttached() && 454 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 455 } 456 457 final void moveToFront() { 458 if (isAttached()) { 459 if (isOnHomeDisplay()) { 460 mStackSupervisor.moveHomeStack(isHomeStack()); 461 } 462 mStacks.remove(this); 463 mStacks.add(this); 464 } 465 } 466 467 final boolean isAttached() { 468 return mStacks != null; 469 } 470 471 /** 472 * Returns the top activity in any existing task matching the given 473 * Intent. Returns null if no such task is found. 474 */ 475 ActivityRecord findTaskLocked(ActivityRecord target) { 476 Intent intent = target.intent; 477 ActivityInfo info = target.info; 478 ComponentName cls = intent.getComponent(); 479 if (info.targetActivity != null) { 480 cls = new ComponentName(info.packageName, info.targetActivity); 481 } 482 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 483 484 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 485 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 486 final TaskRecord task = mTaskHistory.get(taskNdx); 487 if (task.userId != userId) { 488 // Looking for a different task. 489 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 490 continue; 491 } 492 final ActivityRecord r = task.getTopActivity(); 493 if (r == null || r.finishing || r.userId != userId || 494 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 495 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 496 continue; 497 } 498 499 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 500 + r.task.intent.getComponent().flattenToShortString() 501 + "/aff=" + r.task.affinity + " to new cls=" 502 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 503 if (task.affinity != null) { 504 if (task.affinity.equals(info.taskAffinity)) { 505 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 506 return r; 507 } 508 } else if (task.intent != null && task.intent.getComponent().equals(cls)) { 509 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 510 //dump(); 511 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 512 + r.intent); 513 return r; 514 } else if (task.affinityIntent != null 515 && task.affinityIntent.getComponent().equals(cls)) { 516 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 517 //dump(); 518 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 519 + r.intent); 520 return r; 521 } else if (DEBUG_TASKS) { 522 Slog.d(TAG, "Not a match: " + task); 523 } 524 } 525 526 return null; 527 } 528 529 /** 530 * Returns the first activity (starting from the top of the stack) that 531 * is the same as the given activity. Returns null if no such activity 532 * is found. 533 */ 534 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 535 ComponentName cls = intent.getComponent(); 536 if (info.targetActivity != null) { 537 cls = new ComponentName(info.packageName, info.targetActivity); 538 } 539 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 540 541 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 542 TaskRecord task = mTaskHistory.get(taskNdx); 543 if (task.userId != mCurrentUser) { 544 return null; 545 } 546 final ArrayList<ActivityRecord> activities = task.mActivities; 547 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 548 ActivityRecord r = activities.get(activityNdx); 549 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 550 //Slog.i(TAG, "Found matching class!"); 551 //dump(); 552 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 553 return r; 554 } 555 } 556 } 557 558 return null; 559 } 560 561 /* 562 * Move the activities around in the stack to bring a user to the foreground. 563 */ 564 final void switchUserLocked(int userId) { 565 if (mCurrentUser == userId) { 566 return; 567 } 568 mCurrentUser = userId; 569 570 // Move userId's tasks to the top. 571 int index = mTaskHistory.size(); 572 for (int i = 0; i < index; ) { 573 TaskRecord task = mTaskHistory.get(i); 574 if (task.userId == userId) { 575 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 576 " moving " + task + " to top"); 577 mTaskHistory.remove(i); 578 mTaskHistory.add(task); 579 --index; 580 // Use same value for i. 581 } else { 582 ++i; 583 } 584 } 585 if (VALIDATE_TOKENS) { 586 validateAppTokensLocked(); 587 } 588 } 589 590 void minimalResumeActivityLocked(ActivityRecord r) { 591 r.state = ActivityState.RESUMED; 592 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 593 + " (starting new instance)"); 594 r.stopped = false; 595 mResumedActivity = r; 596 r.task.touchActiveTime(); 597 mService.addRecentTaskLocked(r.task); 598 completeResumeLocked(r); 599 mStackSupervisor.checkReadyForSleepLocked(); 600 setLaunchTime(r); 601 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 602 } 603 604 private void startLaunchTraces() { 605 if (mFullyDrawnStartTime != 0) { 606 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 607 } 608 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 609 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 610 } 611 612 private void stopFullyDrawnTraceIfNeeded() { 613 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 614 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 615 mFullyDrawnStartTime = 0; 616 } 617 } 618 619 void setLaunchTime(ActivityRecord r) { 620 if (r.displayStartTime == 0) { 621 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 622 if (mLaunchStartTime == 0) { 623 startLaunchTraces(); 624 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 625 } 626 } else if (mLaunchStartTime == 0) { 627 startLaunchTraces(); 628 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 629 } 630 } 631 632 void clearLaunchTime(ActivityRecord r) { 633 // Make sure that there is no activity waiting for this to launch. 634 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 635 r.displayStartTime = r.fullyDrawnStartTime = 0; 636 } else { 637 mStackSupervisor.removeTimeoutsForActivityLocked(r); 638 mStackSupervisor.scheduleIdleTimeoutLocked(r); 639 } 640 } 641 642 void awakeFromSleepingLocked() { 643 // Ensure activities are no longer sleeping. 644 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 645 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 646 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 647 activities.get(activityNdx).setSleeping(false); 648 } 649 } 650 } 651 652 /** 653 * @return true if something must be done before going to sleep. 654 */ 655 boolean checkReadyForSleepLocked() { 656 if (mResumedActivity != null) { 657 // Still have something resumed; can't sleep until it is paused. 658 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 659 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 660 startPausingLocked(false, true); 661 return true; 662 } 663 if (mPausingActivity != null) { 664 // Still waiting for something to pause; can't sleep yet. 665 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 666 return true; 667 } 668 669 return false; 670 } 671 672 void goToSleep() { 673 ensureActivitiesVisibleLocked(null, 0); 674 675 // Make sure any stopped but visible activities are now sleeping. 676 // This ensures that the activity's onStop() is called. 677 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 678 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 679 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 680 final ActivityRecord r = activities.get(activityNdx); 681 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 682 r.setSleeping(true); 683 } 684 } 685 } 686 } 687 688 public final Bitmap screenshotActivities(ActivityRecord who) { 689 if (who.noDisplay) { 690 return null; 691 } 692 693 TaskRecord tr = who.task; 694 if (mService.getMostRecentTask() != tr && tr.intent != null && 695 (tr.intent.getFlags() & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) != 0) { 696 // If this task is being excluded from recents, we don't want to take 697 // the expense of capturing a thumbnail, since we will never show it. 698 return null; 699 } 700 701 Resources res = mService.mContext.getResources(); 702 int w = mThumbnailWidth; 703 int h = mThumbnailHeight; 704 if (w < 0) { 705 mThumbnailWidth = w = 706 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 707 mThumbnailHeight = h = 708 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 709 } 710 711 if (w > 0) { 712 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 713 || mLastScreenshotActivity.state == ActivityState.RESUMED 714 || mLastScreenshotBitmap.getWidth() != w 715 || mLastScreenshotBitmap.getHeight() != h) { 716 mLastScreenshotActivity = who; 717 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 718 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 719 } 720 if (mLastScreenshotBitmap != null) { 721 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 722 } 723 } 724 return null; 725 } 726 727 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 728 if (mPausingActivity != null) { 729 Slog.e(TAG, "Trying to pause when pause is already pending for " 730 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 731 } 732 ActivityRecord prev = mResumedActivity; 733 if (prev == null) { 734 Slog.e(TAG, "Trying to pause when nothing is resumed", 735 new RuntimeException("here").fillInStackTrace()); 736 mStackSupervisor.resumeTopActivitiesLocked(); 737 return; 738 } 739 740 if (mActivityContainer.mParentActivity == null) { 741 // Top level stack, not a child. Look for child stacks. 742 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 743 } 744 745 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 746 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 747 mResumedActivity = null; 748 mPausingActivity = prev; 749 mLastPausedActivity = prev; 750 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 751 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 752 prev.state = ActivityState.PAUSING; 753 prev.task.touchActiveTime(); 754 clearLaunchTime(prev); 755 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 756 if (next == null || next.task != prev.task) { 757 prev.updateThumbnail(screenshotActivities(prev), null); 758 } 759 stopFullyDrawnTraceIfNeeded(); 760 761 mService.updateCpuStats(); 762 763 if (prev.app != null && prev.app.thread != null) { 764 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 765 try { 766 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 767 prev.userId, System.identityHashCode(prev), 768 prev.shortComponentName); 769 mService.updateUsageStats(prev, false); 770 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 771 userLeaving, prev.configChangeFlags); 772 } catch (Exception e) { 773 // Ignore exception, if process died other code will cleanup. 774 Slog.w(TAG, "Exception thrown during pause", e); 775 mPausingActivity = null; 776 mLastPausedActivity = null; 777 mLastNoHistoryActivity = null; 778 } 779 } else { 780 mPausingActivity = null; 781 mLastPausedActivity = null; 782 mLastNoHistoryActivity = null; 783 } 784 785 // If we are not going to sleep, we want to ensure the device is 786 // awake until the next activity is started. 787 if (!mService.isSleepingOrShuttingDown()) { 788 mStackSupervisor.acquireLaunchWakelock(); 789 } 790 791 if (mPausingActivity != null) { 792 // Have the window manager pause its key dispatching until the new 793 // activity has started. If we're pausing the activity just because 794 // the screen is being turned off and the UI is sleeping, don't interrupt 795 // key dispatch; the same activity will pick it up again on wakeup. 796 if (!uiSleeping) { 797 prev.pauseKeyDispatchingLocked(); 798 } else { 799 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 800 } 801 802 // Schedule a pause timeout in case the app doesn't respond. 803 // We don't give it much time because this directly impacts the 804 // responsiveness seen by the user. 805 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 806 msg.obj = prev; 807 prev.pauseTime = SystemClock.uptimeMillis(); 808 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 809 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 810 } else { 811 // This activity failed to schedule the 812 // pause, so just treat it as being paused now. 813 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 814 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 815 } 816 } 817 818 final void activityPausedLocked(IBinder token, boolean timeout) { 819 if (DEBUG_PAUSE) Slog.v( 820 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 821 822 final ActivityRecord r = isInStackLocked(token); 823 if (r != null) { 824 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 825 if (mPausingActivity == r) { 826 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 827 + (timeout ? " (due to timeout)" : " (pause complete)")); 828 r.state = ActivityState.PAUSED; 829 completePauseLocked(); 830 } else { 831 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 832 r.userId, System.identityHashCode(r), r.shortComponentName, 833 mPausingActivity != null 834 ? mPausingActivity.shortComponentName : "(none)"); 835 } 836 } 837 } 838 839 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, Bitmap thumbnail, 840 CharSequence description) { 841 if (r.state != ActivityState.STOPPING) { 842 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 843 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 844 return; 845 } 846 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 847 if (icicle != null) { 848 // If icicle is null, this is happening due to a timeout, so we 849 // haven't really saved the state. 850 r.icicle = icicle; 851 r.haveState = true; 852 r.launchCount = 0; 853 r.updateThumbnail(thumbnail, description); 854 } 855 if (!r.stopped) { 856 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 857 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 858 r.stopped = true; 859 r.state = ActivityState.STOPPED; 860 if (r.finishing) { 861 r.clearOptionsLocked(); 862 } else { 863 if (r.configDestroy) { 864 destroyActivityLocked(r, true, false, "stop-config"); 865 mStackSupervisor.resumeTopActivitiesLocked(); 866 } else { 867 mStackSupervisor.updatePreviousProcessLocked(r); 868 } 869 } 870 } 871 } 872 873 private void completePauseLocked() { 874 ActivityRecord prev = mPausingActivity; 875 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 876 877 if (prev != null) { 878 if (prev.finishing) { 879 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 880 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 881 } else if (prev.app != null) { 882 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 883 if (prev.waitingVisible) { 884 prev.waitingVisible = false; 885 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 886 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 887 TAG, "Complete pause, no longer waiting: " + prev); 888 } 889 if (prev.configDestroy) { 890 // The previous is being paused because the configuration 891 // is changing, which means it is actually stopping... 892 // To juggle the fact that we are also starting a new 893 // instance right now, we need to first completely stop 894 // the current instance before starting the new one. 895 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 896 destroyActivityLocked(prev, true, false, "pause-config"); 897 } else { 898 mStackSupervisor.mStoppingActivities.add(prev); 899 if (mStackSupervisor.mStoppingActivities.size() > 3 || 900 prev.frontOfTask && mTaskHistory.size() <= 1) { 901 // If we already have a few activities waiting to stop, 902 // then give up on things going idle and start clearing 903 // them out. Or if r is the last of activity of the last task the stack 904 // will be empty and must be cleared immediately. 905 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 906 mStackSupervisor.scheduleIdleLocked(); 907 } else { 908 mStackSupervisor.checkReadyForSleepLocked(); 909 } 910 } 911 } else { 912 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 913 prev = null; 914 } 915 mPausingActivity = null; 916 } 917 918 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 919 if (!mService.isSleepingOrShuttingDown()) { 920 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 921 } else { 922 mStackSupervisor.checkReadyForSleepLocked(); 923 ActivityRecord top = topStack.topRunningActivityLocked(null); 924 if (top == null || (prev != null && top != prev)) { 925 // If there are no more activities available to run, 926 // do resume anyway to start something. Also if the top 927 // activity on the stack is not the just paused activity, 928 // we need to go ahead and resume it to ensure we complete 929 // an in-flight app switch. 930 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 931 } 932 } 933 934 if (prev != null) { 935 prev.resumeKeyDispatchingLocked(); 936 937 if (prev.app != null && prev.cpuTimeAtResume > 0 938 && mService.mBatteryStatsService.isOnBattery()) { 939 long diff; 940 synchronized (mService.mProcessCpuThread) { 941 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 942 - prev.cpuTimeAtResume; 943 } 944 if (diff > 0) { 945 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 946 synchronized (bsi) { 947 BatteryStatsImpl.Uid.Proc ps = 948 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 949 prev.info.packageName); 950 if (ps != null) { 951 ps.addForegroundTimeLocked(diff); 952 } 953 } 954 } 955 } 956 prev.cpuTimeAtResume = 0; // reset it 957 } 958 } 959 960 /** 961 * Once we know that we have asked an application to put an activity in 962 * the resumed state (either by launching it or explicitly telling it), 963 * this function updates the rest of our state to match that fact. 964 */ 965 private void completeResumeLocked(ActivityRecord next) { 966 next.idle = false; 967 next.results = null; 968 next.newIntents = null; 969 if (next.nowVisible) { 970 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 971 mStackSupervisor.dismissKeyguard(); 972 } 973 974 // schedule an idle timeout in case the app doesn't do it for us. 975 mStackSupervisor.scheduleIdleTimeoutLocked(next); 976 977 mStackSupervisor.reportResumedActivityLocked(next); 978 979 next.resumeKeyDispatchingLocked(); 980 mNoAnimActivities.clear(); 981 982 // Mark the point when the activity is resuming 983 // TODO: To be more accurate, the mark should be before the onCreate, 984 // not after the onResume. But for subsequent starts, onResume is fine. 985 if (next.app != null) { 986 synchronized (mService.mProcessCpuThread) { 987 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 988 } 989 } else { 990 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 991 } 992 } 993 994 /** 995 * Determine if home should be visible below the passed record. 996 * @param record activity we are querying for. 997 * @return true if home is visible below the passed activity, false otherwise. 998 */ 999 boolean isActivityOverHome(ActivityRecord record) { 1000 // Start at record and go down, look for either home or a visible fullscreen activity. 1001 final TaskRecord recordTask = record.task; 1002 for (int taskNdx = mTaskHistory.indexOf(recordTask); taskNdx >= 0; --taskNdx) { 1003 TaskRecord task = mTaskHistory.get(taskNdx); 1004 final ArrayList<ActivityRecord> activities = task.mActivities; 1005 final int startNdx = 1006 task == recordTask ? activities.indexOf(record) : activities.size() - 1; 1007 for (int activityNdx = startNdx; activityNdx >= 0; --activityNdx) { 1008 final ActivityRecord r = activities.get(activityNdx); 1009 if (r.isHomeActivity()) { 1010 return true; 1011 } 1012 if (!r.finishing && r.fullscreen) { 1013 // Passed activity is over a fullscreen activity. 1014 return false; 1015 } 1016 } 1017 if (task.mOnTopOfHome) { 1018 // Got to the bottom of a task on top of home without finding a visible fullscreen 1019 // activity. Home is visible. 1020 return true; 1021 } 1022 } 1023 // Got to the bottom of this stack and still don't know. If this is over the home stack 1024 // then record is over home. May not work if we ever get more than two layers. 1025 return mStackSupervisor.isFrontStack(this); 1026 } 1027 1028 /** 1029 * Version of ensureActivitiesVisible that can easily be called anywhere. 1030 */ 1031 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1032 return ensureActivitiesVisibleLocked(starting, configChanges, false); 1033 } 1034 1035 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges, 1036 boolean forceHomeShown) { 1037 ActivityRecord r = topRunningActivityLocked(null); 1038 return r != null && 1039 ensureActivitiesVisibleLocked(r, starting, null, configChanges, forceHomeShown); 1040 } 1041 1042 /** 1043 * Make sure that all activities that need to be visible (that is, they 1044 * currently can be seen by the user) actually are. 1045 */ 1046 final boolean ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1047 String onlyThisProcess, int configChanges, boolean forceHomeShown) { 1048 if (DEBUG_VISBILITY) Slog.v( 1049 TAG, "ensureActivitiesVisible behind " + top 1050 + " configChanges=0x" + Integer.toHexString(configChanges)); 1051 1052 if (mTranslucentActivityWaiting != top) { 1053 mUndrawnActivitiesBelowTopTranslucent.clear(); 1054 if (mTranslucentActivityWaiting != null) { 1055 // Call the callback with a timeout indication. 1056 notifyActivityDrawnLocked(null); 1057 mTranslucentActivityWaiting = null; 1058 } 1059 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1060 } 1061 1062 // If the top activity is not fullscreen, then we need to 1063 // make sure any activities under it are now visible. 1064 boolean aboveTop = true; 1065 boolean showHomeBehindStack = false; 1066 boolean behindFullscreen = !mStackSupervisor.isFrontStack(this) && 1067 !(forceHomeShown && isHomeStack()); 1068 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1069 final TaskRecord task = mTaskHistory.get(taskNdx); 1070 final ArrayList<ActivityRecord> activities = task.mActivities; 1071 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1072 final ActivityRecord r = activities.get(activityNdx); 1073 if (r.finishing) { 1074 continue; 1075 } 1076 if (aboveTop && r != top) { 1077 continue; 1078 } 1079 aboveTop = false; 1080 if (!behindFullscreen) { 1081 if (DEBUG_VISBILITY) Slog.v( 1082 TAG, "Make visible? " + r + " finishing=" + r.finishing 1083 + " state=" + r.state); 1084 1085 final boolean doThisProcess = onlyThisProcess == null 1086 || onlyThisProcess.equals(r.processName); 1087 1088 // First: if this is not the current activity being started, make 1089 // sure it matches the current configuration. 1090 if (r != starting && doThisProcess) { 1091 ensureActivityConfigurationLocked(r, 0); 1092 } 1093 1094 if (r.app == null || r.app.thread == null) { 1095 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1096 // This activity needs to be visible, but isn't even 1097 // running... get it started, but don't resume it 1098 // at this point. 1099 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1100 if (r != starting) { 1101 r.startFreezingScreenLocked(r.app, configChanges); 1102 } 1103 if (!r.visible) { 1104 if (DEBUG_VISBILITY) Slog.v( 1105 TAG, "Starting and making visible: " + r); 1106 r.visible = true; 1107 mWindowManager.setAppVisibility(r.appToken, true); 1108 } 1109 if (r != starting) { 1110 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1111 } 1112 } 1113 1114 } else if (r.visible) { 1115 // If this activity is already visible, then there is nothing 1116 // else to do here. 1117 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1118 r.stopFreezingScreenLocked(false); 1119 1120 } else if (onlyThisProcess == null) { 1121 // This activity is not currently visible, but is running. 1122 // Tell it to become visible. 1123 r.visible = true; 1124 if (r.state != ActivityState.RESUMED && r != starting) { 1125 // If this activity is paused, tell it 1126 // to now show its window. 1127 if (DEBUG_VISBILITY) Slog.v( 1128 TAG, "Making visible and scheduling visibility: " + r); 1129 try { 1130 if (mTranslucentActivityWaiting != null) { 1131 mUndrawnActivitiesBelowTopTranslucent.add(r); 1132 } 1133 mWindowManager.setAppVisibility(r.appToken, true); 1134 r.sleeping = false; 1135 r.app.pendingUiClean = true; 1136 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1137 r.stopFreezingScreenLocked(false); 1138 } catch (Exception e) { 1139 // Just skip on any failure; we'll make it 1140 // visible when it next restarts. 1141 Slog.w(TAG, "Exception thrown making visibile: " 1142 + r.intent.getComponent(), e); 1143 } 1144 } 1145 } 1146 1147 // Aggregate current change flags. 1148 configChanges |= r.configChangeFlags; 1149 1150 if (r.fullscreen) { 1151 // At this point, nothing else needs to be shown 1152 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1153 behindFullscreen = true; 1154 } else if (isActivityOverHome(r)) { 1155 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1156 showHomeBehindStack = true; 1157 behindFullscreen = !isHomeStack() && r.frontOfTask && task.mOnTopOfHome; 1158 } 1159 } else { 1160 if (DEBUG_VISBILITY) Slog.v( 1161 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1162 + " state=" + r.state 1163 + " behindFullscreen=" + behindFullscreen); 1164 // Now for any activities that aren't visible to the user, make 1165 // sure they no longer are keeping the screen frozen. 1166 if (r.visible) { 1167 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1168 r.visible = false; 1169 try { 1170 mWindowManager.setAppVisibility(r.appToken, false); 1171 switch (r.state) { 1172 case STOPPING: 1173 case STOPPED: 1174 if (r.app != null && r.app.thread != null) { 1175 if (DEBUG_VISBILITY) Slog.v( 1176 TAG, "Scheduling invisibility: " + r); 1177 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1178 } 1179 break; 1180 1181 case INITIALIZING: 1182 case RESUMED: 1183 case PAUSING: 1184 case PAUSED: 1185 // This case created for transitioning activities from 1186 // translucent to opaque {@link Activity#convertToOpaque}. 1187 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1188 mStackSupervisor.mStoppingActivities.add(r); 1189 } 1190 mStackSupervisor.scheduleIdleLocked(); 1191 break; 1192 1193 default: 1194 break; 1195 } 1196 } catch (Exception e) { 1197 // Just skip on any failure; we'll make it 1198 // visible when it next restarts. 1199 Slog.w(TAG, "Exception thrown making hidden: " 1200 + r.intent.getComponent(), e); 1201 } 1202 } else { 1203 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1204 } 1205 } 1206 } 1207 } 1208 return showHomeBehindStack; 1209 } 1210 1211 void convertToTranslucent(ActivityRecord r) { 1212 mTranslucentActivityWaiting = r; 1213 mUndrawnActivitiesBelowTopTranslucent.clear(); 1214 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1215 } 1216 1217 /** 1218 * Called as activities below the top translucent activity are redrawn. When the last one is 1219 * redrawn notify the top activity by calling 1220 * {@link Activity#onTranslucentConversionComplete}. 1221 * 1222 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1223 * occurred and the activity will be notified immediately. 1224 */ 1225 void notifyActivityDrawnLocked(ActivityRecord r) { 1226 if ((r == null) 1227 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1228 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1229 // The last undrawn activity below the top has just been drawn. If there is an 1230 // opaque activity at the top, notify it that it can become translucent safely now. 1231 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1232 mTranslucentActivityWaiting = null; 1233 mUndrawnActivitiesBelowTopTranslucent.clear(); 1234 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1235 1236 if (waitingActivity != null && waitingActivity.app != null && 1237 waitingActivity.app.thread != null) { 1238 try { 1239 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1240 waitingActivity.appToken, r != null); 1241 } catch (RemoteException e) { 1242 } 1243 } 1244 } 1245 } 1246 1247 /** 1248 * Ensure that the top activity in the stack is resumed. 1249 * 1250 * @param prev The previously resumed activity, for when in the process 1251 * of pausing; can be null to call from elsewhere. 1252 * 1253 * @return Returns true if something is being resumed, or false if 1254 * nothing happened. 1255 */ 1256 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1257 return resumeTopActivityLocked(prev, null); 1258 } 1259 1260 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1261 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1262 1263 ActivityRecord parent = mActivityContainer.mParentActivity; 1264 if (parent != null && parent.state != ActivityState.RESUMED) { 1265 // Do not resume this stack if its parent is not resumed. 1266 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1267 return false; 1268 } 1269 1270 // Find the first activity that is not finishing. 1271 ActivityRecord next = topRunningActivityLocked(null); 1272 1273 // Remember how we'll process this pause/resume situation, and ensure 1274 // that the state is reset however we wind up proceeding. 1275 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1276 mStackSupervisor.mUserLeaving = false; 1277 1278 if (next == null) { 1279 // There are no more activities! Let's just start up the 1280 // Launcher... 1281 ActivityOptions.abort(options); 1282 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1283 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1284 // Only resume home if on home display 1285 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1286 } 1287 1288 next.delayedResume = false; 1289 1290 // If the top activity is the resumed one, nothing to do. 1291 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1292 mStackSupervisor.allResumedActivitiesComplete()) { 1293 // Make sure we have executed any pending transitions, since there 1294 // should be nothing left to do at this point. 1295 mWindowManager.executeAppTransition(); 1296 mNoAnimActivities.clear(); 1297 ActivityOptions.abort(options); 1298 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1299 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1300 return false; 1301 } 1302 1303 final TaskRecord nextTask = next.task; 1304 final TaskRecord prevTask = prev != null ? prev.task : null; 1305 if (prevTask != null && prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1306 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1307 if (prevTask == nextTask) { 1308 prevTask.setFrontOfTask(); 1309 } else if (prevTask != topTask()) { 1310 // This task is going away but it was supposed to return to the home task. 1311 // Now the task above it has to return to the home task instead. 1312 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1313 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1314 } else { 1315 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1316 "resumeTopActivityLocked: Launching home next"); 1317 // Only resume home if on home display 1318 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1319 } 1320 } 1321 1322 // If we are sleeping, and there is no resumed activity, and the top 1323 // activity is paused, well that is the state we want. 1324 if (mService.isSleepingOrShuttingDown() 1325 && mLastPausedActivity == next 1326 && mStackSupervisor.allPausedActivitiesComplete()) { 1327 // Make sure we have executed any pending transitions, since there 1328 // should be nothing left to do at this point. 1329 mWindowManager.executeAppTransition(); 1330 mNoAnimActivities.clear(); 1331 ActivityOptions.abort(options); 1332 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1333 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1334 return false; 1335 } 1336 1337 // Make sure that the user who owns this activity is started. If not, 1338 // we will just leave it as is because someone should be bringing 1339 // another user's activities to the top of the stack. 1340 if (mService.mStartedUsers.get(next.userId) == null) { 1341 Slog.w(TAG, "Skipping resume of top activity " + next 1342 + ": user " + next.userId + " is stopped"); 1343 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1344 return false; 1345 } 1346 1347 // The activity may be waiting for stop, but that is no longer 1348 // appropriate for it. 1349 mStackSupervisor.mStoppingActivities.remove(next); 1350 mStackSupervisor.mGoingToSleepActivities.remove(next); 1351 next.sleeping = false; 1352 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1353 1354 next.updateOptionsLocked(options); 1355 1356 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1357 1358 // If we are currently pausing an activity, then don't do anything 1359 // until that is done. 1360 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1361 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1362 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1363 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1364 return false; 1365 } 1366 1367 // Okay we are now going to start a switch, to 'next'. We may first 1368 // have to pause the current activity, but this is an important point 1369 // where we have decided to go to 'next' so keep track of that. 1370 // XXX "App Redirected" dialog is getting too many false positives 1371 // at this point, so turn off for now. 1372 if (false) { 1373 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1374 long now = SystemClock.uptimeMillis(); 1375 final boolean inTime = mLastStartedActivity.startTime != 0 1376 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1377 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1378 final int nextUid = next.info.applicationInfo.uid; 1379 if (inTime && lastUid != nextUid 1380 && lastUid != next.launchedFromUid 1381 && mService.checkPermission( 1382 android.Manifest.permission.STOP_APP_SWITCHES, 1383 -1, next.launchedFromUid) 1384 != PackageManager.PERMISSION_GRANTED) { 1385 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1386 } else { 1387 next.startTime = now; 1388 mLastStartedActivity = next; 1389 } 1390 } else { 1391 next.startTime = SystemClock.uptimeMillis(); 1392 mLastStartedActivity = next; 1393 } 1394 } 1395 1396 // We need to start pausing the current activity so the top one 1397 // can be resumed... 1398 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1399 if (mResumedActivity != null) { 1400 pausing = true; 1401 startPausingLocked(userLeaving, false); 1402 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1403 } 1404 if (pausing) { 1405 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1406 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1407 // At this point we want to put the upcoming activity's process 1408 // at the top of the LRU list, since we know we will be needing it 1409 // very soon and it would be a waste to let it get killed if it 1410 // happens to be sitting towards the end. 1411 if (next.app != null && next.app.thread != null) { 1412 // No reason to do full oom adj update here; we'll let that 1413 // happen whenever it needs to later. 1414 mService.updateLruProcessLocked(next.app, true, null); 1415 } 1416 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1417 return true; 1418 } 1419 1420 // If the most recent activity was noHistory but was only stopped rather 1421 // than stopped+finished because the device went to sleep, we need to make 1422 // sure to finish it as we're making a new activity topmost. 1423 if (mService.mSleeping && mLastNoHistoryActivity != null && 1424 !mLastNoHistoryActivity.finishing) { 1425 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1426 " on new resume"); 1427 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1428 null, "no-history", false); 1429 mLastNoHistoryActivity = null; 1430 } 1431 1432 if (prev != null && prev != next) { 1433 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1434 prev.waitingVisible = true; 1435 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1436 if (DEBUG_SWITCH) Slog.v( 1437 TAG, "Resuming top, waiting visible to hide: " + prev); 1438 } else { 1439 // The next activity is already visible, so hide the previous 1440 // activity's windows right now so we can show the new one ASAP. 1441 // We only do this if the previous is finishing, which should mean 1442 // it is on top of the one being resumed so hiding it quickly 1443 // is good. Otherwise, we want to do the normal route of allowing 1444 // the resumed activity to be shown so we can decide if the 1445 // previous should actually be hidden depending on whether the 1446 // new one is found to be full-screen or not. 1447 if (prev.finishing) { 1448 mWindowManager.setAppVisibility(prev.appToken, false); 1449 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1450 + prev + ", waitingVisible=" 1451 + (prev != null ? prev.waitingVisible : null) 1452 + ", nowVisible=" + next.nowVisible); 1453 } else { 1454 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1455 + prev + ", waitingVisible=" 1456 + (prev != null ? prev.waitingVisible : null) 1457 + ", nowVisible=" + next.nowVisible); 1458 } 1459 } 1460 } 1461 1462 // Launching this app's activity, make sure the app is no longer 1463 // considered stopped. 1464 try { 1465 AppGlobals.getPackageManager().setPackageStoppedState( 1466 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1467 } catch (RemoteException e1) { 1468 } catch (IllegalArgumentException e) { 1469 Slog.w(TAG, "Failed trying to unstop package " 1470 + next.packageName + ": " + e); 1471 } 1472 1473 // We are starting up the next activity, so tell the window manager 1474 // that the previous one will be hidden soon. This way it can know 1475 // to ignore it when computing the desired screen orientation. 1476 boolean anim = true; 1477 if (prev != null) { 1478 if (prev.finishing) { 1479 if (DEBUG_TRANSITION) Slog.v(TAG, 1480 "Prepare close transition: prev=" + prev); 1481 if (mNoAnimActivities.contains(prev)) { 1482 anim = false; 1483 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1484 } else { 1485 mWindowManager.prepareAppTransition(prev.task == next.task 1486 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1487 : AppTransition.TRANSIT_TASK_CLOSE, false); 1488 } 1489 mWindowManager.setAppWillBeHidden(prev.appToken); 1490 mWindowManager.setAppVisibility(prev.appToken, false); 1491 } else { 1492 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1493 if (mNoAnimActivities.contains(next)) { 1494 anim = false; 1495 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1496 } else { 1497 mWindowManager.prepareAppTransition(prev.task == next.task 1498 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1499 : AppTransition.TRANSIT_TASK_OPEN, false); 1500 } 1501 } 1502 if (false) { 1503 mWindowManager.setAppWillBeHidden(prev.appToken); 1504 mWindowManager.setAppVisibility(prev.appToken, false); 1505 } 1506 } else { 1507 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1508 if (mNoAnimActivities.contains(next)) { 1509 anim = false; 1510 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1511 } else { 1512 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1513 } 1514 } 1515 if (anim) { 1516 next.applyOptionsLocked(); 1517 } else { 1518 next.clearOptionsLocked(); 1519 } 1520 1521 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1522 if (next.app != null && next.app.thread != null) { 1523 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1524 1525 // This activity is now becoming visible. 1526 mWindowManager.setAppVisibility(next.appToken, true); 1527 1528 // schedule launch ticks to collect information about slow apps. 1529 next.startLaunchTickingLocked(); 1530 1531 ActivityRecord lastResumedActivity = 1532 lastStack == null ? null :lastStack.mResumedActivity; 1533 ActivityState lastState = next.state; 1534 1535 mService.updateCpuStats(); 1536 1537 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1538 next.state = ActivityState.RESUMED; 1539 mResumedActivity = next; 1540 next.task.touchActiveTime(); 1541 mService.addRecentTaskLocked(next.task); 1542 mService.updateLruProcessLocked(next.app, true, null); 1543 updateLRUListLocked(next); 1544 mService.updateOomAdjLocked(); 1545 1546 // Have the window manager re-evaluate the orientation of 1547 // the screen based on the new activity order. 1548 boolean notUpdated = true; 1549 if (mStackSupervisor.isFrontStack(this)) { 1550 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1551 mService.mConfiguration, 1552 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1553 if (config != null) { 1554 next.frozenBeforeDestroy = true; 1555 } 1556 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1557 } 1558 1559 if (notUpdated) { 1560 // The configuration update wasn't able to keep the existing 1561 // instance of the activity, and instead started a new one. 1562 // We should be all done, but let's just make sure our activity 1563 // is still at the top and schedule another run if something 1564 // weird happened. 1565 ActivityRecord nextNext = topRunningActivityLocked(null); 1566 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1567 "Activity config changed during resume: " + next 1568 + ", new next: " + nextNext); 1569 if (nextNext != next) { 1570 // Do over! 1571 mStackSupervisor.scheduleResumeTopActivities(); 1572 } 1573 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1574 mNoAnimActivities.clear(); 1575 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1576 return true; 1577 } 1578 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1579 return false; 1580 } 1581 1582 try { 1583 // Deliver all pending results. 1584 ArrayList<ResultInfo> a = next.results; 1585 if (a != null) { 1586 final int N = a.size(); 1587 if (!next.finishing && N > 0) { 1588 if (DEBUG_RESULTS) Slog.v( 1589 TAG, "Delivering results to " + next 1590 + ": " + a); 1591 next.app.thread.scheduleSendResult(next.appToken, a); 1592 } 1593 } 1594 1595 if (next.newIntents != null) { 1596 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1597 } 1598 1599 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1600 next.userId, System.identityHashCode(next), 1601 next.task.taskId, next.shortComponentName); 1602 1603 next.sleeping = false; 1604 mService.showAskCompatModeDialogLocked(next); 1605 next.app.pendingUiClean = true; 1606 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1607 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1608 mService.isNextTransitionForward()); 1609 1610 mStackSupervisor.checkReadyForSleepLocked(); 1611 1612 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1613 } catch (Exception e) { 1614 // Whoops, need to restart this activity! 1615 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1616 + lastState + ": " + next); 1617 next.state = lastState; 1618 if (lastStack != null) { 1619 lastStack.mResumedActivity = lastResumedActivity; 1620 } 1621 Slog.i(TAG, "Restarting because process died: " + next); 1622 if (!next.hasBeenLaunched) { 1623 next.hasBeenLaunched = true; 1624 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1625 mStackSupervisor.isFrontStack(lastStack)) { 1626 mWindowManager.setAppStartingWindow( 1627 next.appToken, next.packageName, next.theme, 1628 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1629 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1630 next.windowFlags, null, true); 1631 } 1632 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1633 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1634 return true; 1635 } 1636 1637 // From this point on, if something goes wrong there is no way 1638 // to recover the activity. 1639 try { 1640 next.visible = true; 1641 completeResumeLocked(next); 1642 } catch (Exception e) { 1643 // If any exception gets thrown, toss away this 1644 // activity and try the next one. 1645 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1646 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1647 "resume-exception", true); 1648 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1649 return true; 1650 } 1651 next.stopped = false; 1652 1653 } else { 1654 // Whoops, need to restart this activity! 1655 if (!next.hasBeenLaunched) { 1656 next.hasBeenLaunched = true; 1657 } else { 1658 if (SHOW_APP_STARTING_PREVIEW) { 1659 mWindowManager.setAppStartingWindow( 1660 next.appToken, next.packageName, next.theme, 1661 mService.compatibilityInfoForPackageLocked( 1662 next.info.applicationInfo), 1663 next.nonLocalizedLabel, 1664 next.labelRes, next.icon, next.logo, next.windowFlags, 1665 null, true); 1666 } 1667 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1668 } 1669 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1670 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1671 } 1672 1673 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1674 return true; 1675 } 1676 1677 private void insertTaskAtTop(TaskRecord task) { 1678 // If this is being moved to the top by another activity or being launched from the home 1679 // activity, set mOnTopOfHome accordingly. 1680 if (isOnHomeDisplay()) { 1681 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1682 final boolean fromHome = lastStack.isHomeStack(); 1683 if (!isHomeStack() && (fromHome || topTask() != task)) { 1684 task.mOnTopOfHome = fromHome; 1685 } 1686 } else { 1687 task.mOnTopOfHome = false; 1688 } 1689 1690 mTaskHistory.remove(task); 1691 // Now put task at top. 1692 int stackNdx = mTaskHistory.size(); 1693 if (task.userId != mCurrentUser) { 1694 // Put non-current user tasks below current user tasks. 1695 while (--stackNdx >= 0) { 1696 if (mTaskHistory.get(stackNdx).userId != mCurrentUser) { 1697 break; 1698 } 1699 } 1700 ++stackNdx; 1701 } 1702 mTaskHistory.add(stackNdx, task); 1703 } 1704 1705 final void startActivityLocked(ActivityRecord r, boolean newTask, 1706 boolean doResume, boolean keepCurTransition, Bundle options) { 1707 TaskRecord rTask = r.task; 1708 final int taskId = rTask.taskId; 1709 if (taskForIdLocked(taskId) == null || newTask) { 1710 // Last activity in task had been removed or ActivityManagerService is reusing task. 1711 // Insert or replace. 1712 // Might not even be in. 1713 insertTaskAtTop(rTask); 1714 mWindowManager.moveTaskToTop(taskId); 1715 } 1716 TaskRecord task = null; 1717 if (!newTask) { 1718 // If starting in an existing task, find where that is... 1719 boolean startIt = true; 1720 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1721 task = mTaskHistory.get(taskNdx); 1722 if (task == r.task) { 1723 // Here it is! Now, if this is not yet visible to the 1724 // user, then just add it without starting; it will 1725 // get started when the user navigates back to it. 1726 if (!startIt) { 1727 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1728 + task, new RuntimeException("here").fillInStackTrace()); 1729 task.addActivityToTop(r); 1730 r.putInHistory(); 1731 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1732 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1733 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1734 r.userId, r.info.configChanges); 1735 if (VALIDATE_TOKENS) { 1736 validateAppTokensLocked(); 1737 } 1738 ActivityOptions.abort(options); 1739 return; 1740 } 1741 break; 1742 } else if (task.numFullscreen > 0) { 1743 startIt = false; 1744 } 1745 } 1746 } 1747 1748 // Place a new activity at top of stack, so it is next to interact 1749 // with the user. 1750 1751 // If we are not placing the new activity frontmost, we do not want 1752 // to deliver the onUserLeaving callback to the actual frontmost 1753 // activity 1754 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1755 mStackSupervisor.mUserLeaving = false; 1756 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1757 "startActivity() behind front, mUserLeaving=false"); 1758 } 1759 1760 task = r.task; 1761 1762 // Slot the activity into the history stack and proceed 1763 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1764 new RuntimeException("here").fillInStackTrace()); 1765 task.addActivityToTop(r); 1766 task.setFrontOfTask(); 1767 1768 r.putInHistory(); 1769 if (!isHomeStack() || numActivities() > 0) { 1770 // We want to show the starting preview window if we are 1771 // switching to a new task, or the next activity's process is 1772 // not currently running. 1773 boolean showStartingIcon = newTask; 1774 ProcessRecord proc = r.app; 1775 if (proc == null) { 1776 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1777 } 1778 if (proc == null || proc.thread == null) { 1779 showStartingIcon = true; 1780 } 1781 if (DEBUG_TRANSITION) Slog.v(TAG, 1782 "Prepare open transition: starting " + r); 1783 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1784 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1785 mNoAnimActivities.add(r); 1786 } else { 1787 mWindowManager.prepareAppTransition(newTask 1788 ? AppTransition.TRANSIT_TASK_OPEN 1789 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1790 mNoAnimActivities.remove(r); 1791 } 1792 r.updateOptionsLocked(options); 1793 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1794 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1795 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1796 r.info.configChanges); 1797 boolean doShow = true; 1798 if (newTask) { 1799 // Even though this activity is starting fresh, we still need 1800 // to reset it to make sure we apply affinities to move any 1801 // existing activities from other tasks in to it. 1802 // If the caller has requested that the target task be 1803 // reset, then do so. 1804 if ((r.intent.getFlags() 1805 &Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1806 resetTaskIfNeededLocked(r, r); 1807 doShow = topRunningNonDelayedActivityLocked(null) == r; 1808 } 1809 } 1810 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1811 // Figure out if we are transitioning from another activity that is 1812 // "has the same starting icon" as the next one. This allows the 1813 // window manager to keep the previous window it had previously 1814 // created, if it still had one. 1815 ActivityRecord prev = mResumedActivity; 1816 if (prev != null) { 1817 // We don't want to reuse the previous starting preview if: 1818 // (1) The current activity is in a different task. 1819 if (prev.task != r.task) { 1820 prev = null; 1821 } 1822 // (2) The current activity is already displayed. 1823 else if (prev.nowVisible) { 1824 prev = null; 1825 } 1826 } 1827 mWindowManager.setAppStartingWindow( 1828 r.appToken, r.packageName, r.theme, 1829 mService.compatibilityInfoForPackageLocked( 1830 r.info.applicationInfo), r.nonLocalizedLabel, 1831 r.labelRes, r.icon, r.logo, r.windowFlags, 1832 prev != null ? prev.appToken : null, showStartingIcon); 1833 } 1834 } else { 1835 // If this is the first activity, don't do any fancy animations, 1836 // because there is nothing for it to animate on top of. 1837 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1838 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1839 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1840 r.info.configChanges); 1841 ActivityOptions.abort(options); 1842 } 1843 if (VALIDATE_TOKENS) { 1844 validateAppTokensLocked(); 1845 } 1846 1847 if (doResume) { 1848 mStackSupervisor.resumeTopActivitiesLocked(); 1849 } 1850 } 1851 1852 final void validateAppTokensLocked() { 1853 mValidateAppTokens.clear(); 1854 mValidateAppTokens.ensureCapacity(numActivities()); 1855 final int numTasks = mTaskHistory.size(); 1856 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1857 TaskRecord task = mTaskHistory.get(taskNdx); 1858 final ArrayList<ActivityRecord> activities = task.mActivities; 1859 if (activities.isEmpty()) { 1860 continue; 1861 } 1862 TaskGroup group = new TaskGroup(); 1863 group.taskId = task.taskId; 1864 mValidateAppTokens.add(group); 1865 final int numActivities = activities.size(); 1866 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1867 final ActivityRecord r = activities.get(activityNdx); 1868 group.tokens.add(r.appToken); 1869 } 1870 } 1871 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 1872 } 1873 1874 /** 1875 * Perform a reset of the given task, if needed as part of launching it. 1876 * Returns the new HistoryRecord at the top of the task. 1877 */ 1878 /** 1879 * Helper method for #resetTaskIfNeededLocked. 1880 * We are inside of the task being reset... we'll either finish this activity, push it out 1881 * for another task, or leave it as-is. 1882 * @param task The task containing the Activity (taskTop) that might be reset. 1883 * @param forceReset 1884 * @return An ActivityOptions that needs to be processed. 1885 */ 1886 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 1887 ActivityOptions topOptions = null; 1888 1889 int replyChainEnd = -1; 1890 boolean canMoveOptions = true; 1891 1892 // We only do this for activities that are not the root of the task (since if we finish 1893 // the root, we may no longer have the task!). 1894 final ArrayList<ActivityRecord> activities = task.mActivities; 1895 final int numActivities = activities.size(); 1896 for (int i = numActivities - 1; i > 0; --i ) { 1897 ActivityRecord target = activities.get(i); 1898 1899 final int flags = target.info.flags; 1900 final boolean finishOnTaskLaunch = 1901 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 1902 final boolean allowTaskReparenting = 1903 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 1904 final boolean clearWhenTaskReset = 1905 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 1906 1907 if (!finishOnTaskLaunch 1908 && !clearWhenTaskReset 1909 && target.resultTo != null) { 1910 // If this activity is sending a reply to a previous 1911 // activity, we can't do anything with it now until 1912 // we reach the start of the reply chain. 1913 // XXX note that we are assuming the result is always 1914 // to the previous activity, which is almost always 1915 // the case but we really shouldn't count on. 1916 if (replyChainEnd < 0) { 1917 replyChainEnd = i; 1918 } 1919 } else if (!finishOnTaskLaunch 1920 && !clearWhenTaskReset 1921 && allowTaskReparenting 1922 && target.taskAffinity != null 1923 && !target.taskAffinity.equals(task.affinity)) { 1924 // If this activity has an affinity for another 1925 // task, then we need to move it out of here. We will 1926 // move it as far out of the way as possible, to the 1927 // bottom of the activity stack. This also keeps it 1928 // correctly ordered with any activities we previously 1929 // moved. 1930 final ThumbnailHolder newThumbHolder; 1931 final TaskRecord targetTask; 1932 final ActivityRecord bottom = 1933 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 1934 mTaskHistory.get(0).mActivities.get(0) : null; 1935 if (bottom != null && target.taskAffinity != null 1936 && target.taskAffinity.equals(bottom.task.affinity)) { 1937 // If the activity currently at the bottom has the 1938 // same task affinity as the one we are moving, 1939 // then merge it into the same task. 1940 targetTask = bottom.task; 1941 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 1942 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 1943 + " out to bottom task " + bottom.task); 1944 } else { 1945 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 1946 null, false); 1947 newThumbHolder = targetTask; 1948 targetTask.affinityIntent = target.intent; 1949 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 1950 + " out to new task " + target.task); 1951 } 1952 1953 if (clearWhenTaskReset) { 1954 // This is the start of a new sub-task. 1955 if (target.thumbHolder == null) { 1956 target.thumbHolder = new ThumbnailHolder(); 1957 } 1958 } else { 1959 target.thumbHolder = newThumbHolder; 1960 } 1961 1962 final int targetTaskId = targetTask.taskId; 1963 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 1964 1965 boolean noOptions = canMoveOptions; 1966 final int start = replyChainEnd < 0 ? i : replyChainEnd; 1967 for (int srcPos = start; srcPos >= i; --srcPos) { 1968 final ActivityRecord p = activities.get(srcPos); 1969 if (p.finishing) { 1970 continue; 1971 } 1972 1973 ThumbnailHolder curThumbHolder = p.thumbHolder; 1974 canMoveOptions = false; 1975 if (noOptions && topOptions == null) { 1976 topOptions = p.takeOptionsLocked(); 1977 if (topOptions != null) { 1978 noOptions = false; 1979 } 1980 } 1981 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 1982 + task + " adding to task=" + targetTask 1983 + " Callers=" + Debug.getCallers(4)); 1984 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 1985 + " out to target's task " + target.task); 1986 p.setTask(targetTask, curThumbHolder, false); 1987 targetTask.addActivityAtBottom(p); 1988 1989 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 1990 } 1991 1992 mWindowManager.moveTaskToBottom(targetTaskId); 1993 if (VALIDATE_TOKENS) { 1994 validateAppTokensLocked(); 1995 } 1996 1997 replyChainEnd = -1; 1998 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 1999 // If the activity should just be removed -- either 2000 // because it asks for it, or the task should be 2001 // cleared -- then finish it and anything that is 2002 // part of its reply chain. 2003 int end; 2004 if (clearWhenTaskReset) { 2005 // In this case, we want to finish this activity 2006 // and everything above it, so be sneaky and pretend 2007 // like these are all in the reply chain. 2008 end = numActivities - 1; 2009 } else if (replyChainEnd < 0) { 2010 end = i; 2011 } else { 2012 end = replyChainEnd; 2013 } 2014 boolean noOptions = canMoveOptions; 2015 for (int srcPos = i; srcPos <= end; srcPos++) { 2016 ActivityRecord p = activities.get(srcPos); 2017 if (p.finishing) { 2018 continue; 2019 } 2020 canMoveOptions = false; 2021 if (noOptions && topOptions == null) { 2022 topOptions = p.takeOptionsLocked(); 2023 if (topOptions != null) { 2024 noOptions = false; 2025 } 2026 } 2027 if (DEBUG_TASKS) Slog.w(TAG, 2028 "resetTaskIntendedTask: calling finishActivity on " + p); 2029 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2030 end--; 2031 srcPos--; 2032 } 2033 } 2034 replyChainEnd = -1; 2035 } else { 2036 // If we were in the middle of a chain, well the 2037 // activity that started it all doesn't want anything 2038 // special, so leave it all as-is. 2039 replyChainEnd = -1; 2040 } 2041 } 2042 2043 return topOptions; 2044 } 2045 2046 /** 2047 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2048 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2049 * @param affinityTask The task we are looking for an affinity to. 2050 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2051 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2052 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2053 */ 2054 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2055 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2056 int replyChainEnd = -1; 2057 final int taskId = task.taskId; 2058 final String taskAffinity = task.affinity; 2059 2060 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2061 final int numActivities = activities.size(); 2062 // Do not operate on the root Activity. 2063 for (int i = numActivities - 1; i > 0; --i) { 2064 ActivityRecord target = activities.get(i); 2065 2066 final int flags = target.info.flags; 2067 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2068 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2069 2070 if (target.resultTo != null) { 2071 // If this activity is sending a reply to a previous 2072 // activity, we can't do anything with it now until 2073 // we reach the start of the reply chain. 2074 // XXX note that we are assuming the result is always 2075 // to the previous activity, which is almost always 2076 // the case but we really shouldn't count on. 2077 if (replyChainEnd < 0) { 2078 replyChainEnd = i; 2079 } 2080 } else if (topTaskIsHigher 2081 && allowTaskReparenting 2082 && taskAffinity != null 2083 && taskAffinity.equals(target.taskAffinity)) { 2084 // This activity has an affinity for our task. Either remove it if we are 2085 // clearing or move it over to our task. Note that 2086 // we currently punt on the case where we are resetting a 2087 // task that is not at the top but who has activities above 2088 // with an affinity to it... this is really not a normal 2089 // case, and we will need to later pull that task to the front 2090 // and usually at that point we will do the reset and pick 2091 // up those remaining activities. (This only happens if 2092 // someone starts an activity in a new task from an activity 2093 // in a task that is not currently on top.) 2094 if (forceReset || finishOnTaskLaunch) { 2095 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2096 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2097 for (int srcPos = start; srcPos >= i; --srcPos) { 2098 final ActivityRecord p = activities.get(srcPos); 2099 if (p.finishing) { 2100 continue; 2101 } 2102 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2103 } 2104 } else { 2105 if (taskInsertionPoint < 0) { 2106 taskInsertionPoint = task.mActivities.size(); 2107 2108 } 2109 2110 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2111 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2112 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2113 for (int srcPos = start; srcPos >= i; --srcPos) { 2114 final ActivityRecord p = activities.get(srcPos); 2115 p.setTask(task, null, false); 2116 task.addActivityAtIndex(taskInsertionPoint, p); 2117 2118 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2119 + " to stack at " + task, 2120 new RuntimeException("here").fillInStackTrace()); 2121 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2122 + " in to resetting task " + task); 2123 mWindowManager.setAppGroupId(p.appToken, taskId); 2124 } 2125 mWindowManager.moveTaskToTop(taskId); 2126 if (VALIDATE_TOKENS) { 2127 validateAppTokensLocked(); 2128 } 2129 2130 // Now we've moved it in to place... but what if this is 2131 // a singleTop activity and we have put it on top of another 2132 // instance of the same activity? Then we drop the instance 2133 // below so it remains singleTop. 2134 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2135 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2136 int targetNdx = taskActivities.indexOf(target); 2137 if (targetNdx > 0) { 2138 ActivityRecord p = taskActivities.get(targetNdx - 1); 2139 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2140 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2141 false); 2142 } 2143 } 2144 } 2145 } 2146 2147 replyChainEnd = -1; 2148 } 2149 } 2150 return taskInsertionPoint; 2151 } 2152 2153 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2154 ActivityRecord newActivity) { 2155 boolean forceReset = 2156 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2157 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2158 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2159 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2160 forceReset = true; 2161 } 2162 } 2163 2164 final TaskRecord task = taskTop.task; 2165 2166 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2167 * for remaining tasks. Used for later tasks to reparent to task. */ 2168 boolean taskFound = false; 2169 2170 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2171 ActivityOptions topOptions = null; 2172 2173 // Preserve the location for reparenting in the new task. 2174 int reparentInsertionPoint = -1; 2175 2176 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2177 final TaskRecord targetTask = mTaskHistory.get(i); 2178 2179 if (targetTask == task) { 2180 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2181 taskFound = true; 2182 } else { 2183 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2184 taskFound, forceReset, reparentInsertionPoint); 2185 } 2186 } 2187 2188 int taskNdx = mTaskHistory.indexOf(task); 2189 do { 2190 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2191 } while (taskTop == null && taskNdx >= 0); 2192 2193 if (topOptions != null) { 2194 // If we got some ActivityOptions from an activity on top that 2195 // was removed from the task, propagate them to the new real top. 2196 if (taskTop != null) { 2197 taskTop.updateOptionsLocked(topOptions); 2198 } else { 2199 topOptions.abort(); 2200 } 2201 } 2202 2203 return taskTop; 2204 } 2205 2206 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2207 String resultWho, int requestCode, int resultCode, Intent data) { 2208 2209 if (callingUid > 0) { 2210 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2211 data, r.getUriPermissionsLocked()); 2212 } 2213 2214 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2215 + " : who=" + resultWho + " req=" + requestCode 2216 + " res=" + resultCode + " data=" + data); 2217 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2218 try { 2219 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2220 list.add(new ResultInfo(resultWho, requestCode, 2221 resultCode, data)); 2222 r.app.thread.scheduleSendResult(r.appToken, list); 2223 return; 2224 } catch (Exception e) { 2225 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2226 } 2227 } 2228 2229 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2230 } 2231 2232 private void adjustFocusedActivityLocked(ActivityRecord r) { 2233 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2234 ActivityRecord next = topRunningActivityLocked(null); 2235 if (next != r) { 2236 final TaskRecord task = r.task; 2237 if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) { 2238 mStackSupervisor.moveHomeToTop(); 2239 } 2240 } 2241 mService.setFocusedActivityLocked(mStackSupervisor.topRunningActivityLocked()); 2242 } 2243 } 2244 2245 final void stopActivityLocked(ActivityRecord r) { 2246 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2247 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2248 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2249 if (!r.finishing) { 2250 if (!mService.mSleeping) { 2251 if (DEBUG_STATES) { 2252 Slog.d(TAG, "no-history finish of " + r); 2253 } 2254 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2255 "no-history", false); 2256 } else { 2257 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2258 + " on stop because we're just sleeping"); 2259 } 2260 } 2261 } 2262 2263 if (r.app != null && r.app.thread != null) { 2264 adjustFocusedActivityLocked(r); 2265 r.resumeKeyDispatchingLocked(); 2266 try { 2267 r.stopped = false; 2268 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2269 + " (stop requested)"); 2270 r.state = ActivityState.STOPPING; 2271 if (DEBUG_VISBILITY) Slog.v( 2272 TAG, "Stopping visible=" + r.visible + " for " + r); 2273 if (!r.visible) { 2274 mWindowManager.setAppVisibility(r.appToken, false); 2275 } 2276 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2277 if (mService.isSleepingOrShuttingDown()) { 2278 r.setSleeping(true); 2279 } 2280 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2281 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2282 } catch (Exception e) { 2283 // Maybe just ignore exceptions here... if the process 2284 // has crashed, our death notification will clean things 2285 // up. 2286 Slog.w(TAG, "Exception thrown during pause", e); 2287 // Just in case, assume it to be stopped. 2288 r.stopped = true; 2289 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2290 r.state = ActivityState.STOPPED; 2291 if (r.configDestroy) { 2292 destroyActivityLocked(r, true, false, "stop-except"); 2293 } 2294 } 2295 } 2296 } 2297 2298 /** 2299 * @return Returns true if the activity is being finished, false if for 2300 * some reason it is being left as-is. 2301 */ 2302 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2303 Intent resultData, String reason, boolean oomAdj) { 2304 ActivityRecord r = isInStackLocked(token); 2305 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2306 TAG, "Finishing activity token=" + token + " r=" 2307 + ", result=" + resultCode + ", data=" + resultData 2308 + ", reason=" + reason); 2309 if (r == null) { 2310 return false; 2311 } 2312 2313 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2314 return true; 2315 } 2316 2317 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2318 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2319 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2320 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2321 ActivityRecord r = activities.get(activityNdx); 2322 if (r.resultTo == self && r.requestCode == requestCode) { 2323 if ((r.resultWho == null && resultWho == null) || 2324 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2325 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2326 false); 2327 } 2328 } 2329 } 2330 } 2331 mService.updateOomAdjLocked(); 2332 } 2333 2334 final void finishTopRunningActivityLocked(ProcessRecord app) { 2335 ActivityRecord r = topRunningActivityLocked(null); 2336 if (r != null && r.app == app) { 2337 // If the top running activity is from this crashing 2338 // process, then terminate it to avoid getting in a loop. 2339 Slog.w(TAG, " Force finishing activity " 2340 + r.intent.getComponent().flattenToShortString()); 2341 int taskNdx = mTaskHistory.indexOf(r.task); 2342 int activityNdx = r.task.mActivities.indexOf(r); 2343 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2344 // Also terminate any activities below it that aren't yet 2345 // stopped, to avoid a situation where one will get 2346 // re-start our crashing activity once it gets resumed again. 2347 --activityNdx; 2348 if (activityNdx < 0) { 2349 do { 2350 --taskNdx; 2351 if (taskNdx < 0) { 2352 break; 2353 } 2354 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2355 } while (activityNdx < 0); 2356 } 2357 if (activityNdx >= 0) { 2358 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2359 if (r.state == ActivityState.RESUMED 2360 || r.state == ActivityState.PAUSING 2361 || r.state == ActivityState.PAUSED) { 2362 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2363 Slog.w(TAG, " Force finishing activity " 2364 + r.intent.getComponent().flattenToShortString()); 2365 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2366 } 2367 } 2368 } 2369 } 2370 } 2371 2372 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2373 ArrayList<ActivityRecord> activities = r.task.mActivities; 2374 for (int index = activities.indexOf(r); index >= 0; --index) { 2375 ActivityRecord cur = activities.get(index); 2376 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2377 break; 2378 } 2379 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2380 } 2381 return true; 2382 } 2383 2384 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2385 // send the result 2386 ActivityRecord resultTo = r.resultTo; 2387 if (resultTo != null) { 2388 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2389 + " who=" + r.resultWho + " req=" + r.requestCode 2390 + " res=" + resultCode + " data=" + resultData); 2391 if (r.info.applicationInfo.uid > 0) { 2392 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2393 resultTo.packageName, resultData, 2394 resultTo.getUriPermissionsLocked()); 2395 } 2396 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2397 resultData); 2398 r.resultTo = null; 2399 } 2400 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2401 2402 // Make sure this HistoryRecord is not holding on to other resources, 2403 // because clients have remote IPC references to this object so we 2404 // can't assume that will go away and want to avoid circular IPC refs. 2405 r.results = null; 2406 r.pendingResults = null; 2407 r.newIntents = null; 2408 r.icicle = null; 2409 } 2410 2411 /** 2412 * @return Returns true if this activity has been removed from the history 2413 * list, or false if it is still in the list and will be removed later. 2414 */ 2415 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2416 String reason, boolean oomAdj) { 2417 if (r.finishing) { 2418 Slog.w(TAG, "Duplicate finish request for " + r); 2419 return false; 2420 } 2421 2422 r.makeFinishing(); 2423 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2424 r.userId, System.identityHashCode(r), 2425 r.task.taskId, r.shortComponentName, reason); 2426 final ArrayList<ActivityRecord> activities = r.task.mActivities; 2427 final int index = activities.indexOf(r); 2428 if (index < (activities.size() - 1)) { 2429 r.task.setFrontOfTask(); 2430 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2431 // If the caller asked that this activity (and all above it) 2432 // be cleared when the task is reset, don't lose that information, 2433 // but propagate it up to the next activity. 2434 ActivityRecord next = activities.get(index+1); 2435 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2436 } 2437 } 2438 2439 r.pauseKeyDispatchingLocked(); 2440 2441 adjustFocusedActivityLocked(r); 2442 2443 finishActivityResultsLocked(r, resultCode, resultData); 2444 2445 if (!mService.mPendingThumbnails.isEmpty()) { 2446 // There are clients waiting to receive thumbnails so, in case 2447 // this is an activity that someone is waiting for, add it 2448 // to the pending list so we can correctly update the clients. 2449 mStackSupervisor.mCancelledThumbnails.add(r); 2450 } 2451 2452 if (mResumedActivity == r) { 2453 boolean endTask = index <= 0; 2454 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2455 "Prepare close transition: finishing " + r); 2456 mWindowManager.prepareAppTransition(endTask 2457 ? AppTransition.TRANSIT_TASK_CLOSE 2458 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2459 2460 // Tell window manager to prepare for this one to be removed. 2461 mWindowManager.setAppVisibility(r.appToken, false); 2462 2463 if (mPausingActivity == null) { 2464 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2465 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2466 startPausingLocked(false, false); 2467 } 2468 2469 } else if (r.state != ActivityState.PAUSING) { 2470 // If the activity is PAUSING, we will complete the finish once 2471 // it is done pausing; else we can just directly finish it here. 2472 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2473 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2474 } else { 2475 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2476 } 2477 2478 return false; 2479 } 2480 2481 static final int FINISH_IMMEDIATELY = 0; 2482 static final int FINISH_AFTER_PAUSE = 1; 2483 static final int FINISH_AFTER_VISIBLE = 2; 2484 2485 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2486 // First things first: if this activity is currently visible, 2487 // and the resumed activity is not yet visible, then hold off on 2488 // finishing until the resumed one becomes visible. 2489 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2490 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2491 mStackSupervisor.mStoppingActivities.add(r); 2492 if (mStackSupervisor.mStoppingActivities.size() > 3 2493 || r.frontOfTask && mTaskHistory.size() <= 1) { 2494 // If we already have a few activities waiting to stop, 2495 // then give up on things going idle and start clearing 2496 // them out. Or if r is the last of activity of the last task the stack 2497 // will be empty and must be cleared immediately. 2498 mStackSupervisor.scheduleIdleLocked(); 2499 } else { 2500 mStackSupervisor.checkReadyForSleepLocked(); 2501 } 2502 } 2503 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2504 + " (finish requested)"); 2505 r.state = ActivityState.STOPPING; 2506 if (oomAdj) { 2507 mService.updateOomAdjLocked(); 2508 } 2509 return r; 2510 } 2511 2512 // make sure the record is cleaned out of other places. 2513 mStackSupervisor.mStoppingActivities.remove(r); 2514 mStackSupervisor.mGoingToSleepActivities.remove(r); 2515 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2516 if (mResumedActivity == r) { 2517 mResumedActivity = null; 2518 } 2519 final ActivityState prevState = r.state; 2520 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2521 r.state = ActivityState.FINISHING; 2522 2523 if (mode == FINISH_IMMEDIATELY 2524 || prevState == ActivityState.STOPPED 2525 || prevState == ActivityState.INITIALIZING) { 2526 // If this activity is already stopped, we can just finish 2527 // it right now. 2528 boolean activityRemoved = destroyActivityLocked(r, true, 2529 oomAdj, "finish-imm"); 2530 if (activityRemoved) { 2531 mStackSupervisor.resumeTopActivitiesLocked(); 2532 } 2533 return activityRemoved ? null : r; 2534 } 2535 2536 // Need to go through the full pause cycle to get this 2537 // activity into the stopped state and then finish it. 2538 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2539 mStackSupervisor.mFinishingActivities.add(r); 2540 r.resumeKeyDispatchingLocked(); 2541 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2542 return r; 2543 } 2544 2545 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2546 Intent resultData) { 2547 final ActivityRecord srec = ActivityRecord.forToken(token); 2548 final TaskRecord task = srec.task; 2549 final ArrayList<ActivityRecord> activities = task.mActivities; 2550 final int start = activities.indexOf(srec); 2551 if (!mTaskHistory.contains(task) || (start < 0)) { 2552 return false; 2553 } 2554 int finishTo = start - 1; 2555 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2556 boolean foundParentInTask = false; 2557 final ComponentName dest = destIntent.getComponent(); 2558 if (start > 0 && dest != null) { 2559 for (int i = finishTo; i >= 0; i--) { 2560 ActivityRecord r = activities.get(i); 2561 if (r.info.packageName.equals(dest.getPackageName()) && 2562 r.info.name.equals(dest.getClassName())) { 2563 finishTo = i; 2564 parent = r; 2565 foundParentInTask = true; 2566 break; 2567 } 2568 } 2569 } 2570 2571 IActivityController controller = mService.mController; 2572 if (controller != null) { 2573 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2574 if (next != null) { 2575 // ask watcher if this is allowed 2576 boolean resumeOK = true; 2577 try { 2578 resumeOK = controller.activityResuming(next.packageName); 2579 } catch (RemoteException e) { 2580 mService.mController = null; 2581 Watchdog.getInstance().setActivityController(null); 2582 } 2583 2584 if (!resumeOK) { 2585 return false; 2586 } 2587 } 2588 } 2589 final long origId = Binder.clearCallingIdentity(); 2590 for (int i = start; i > finishTo; i--) { 2591 ActivityRecord r = activities.get(i); 2592 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2593 // Only return the supplied result for the first activity finished 2594 resultCode = Activity.RESULT_CANCELED; 2595 resultData = null; 2596 } 2597 2598 if (parent != null && foundParentInTask) { 2599 final int parentLaunchMode = parent.info.launchMode; 2600 final int destIntentFlags = destIntent.getFlags(); 2601 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2602 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2603 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2604 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2605 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2606 } else { 2607 try { 2608 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2609 destIntent.getComponent(), 0, srec.userId); 2610 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2611 null, aInfo, parent.appToken, null, 2612 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2613 0, null, true, null, null); 2614 foundParentInTask = res == ActivityManager.START_SUCCESS; 2615 } catch (RemoteException e) { 2616 foundParentInTask = false; 2617 } 2618 requestFinishActivityLocked(parent.appToken, resultCode, 2619 resultData, "navigate-up", true); 2620 } 2621 } 2622 Binder.restoreCallingIdentity(origId); 2623 return foundParentInTask; 2624 } 2625 /** 2626 * Perform the common clean-up of an activity record. This is called both 2627 * as part of destroyActivityLocked() (when destroying the client-side 2628 * representation) and cleaning things up as a result of its hosting 2629 * processing going away, in which case there is no remaining client-side 2630 * state to destroy so only the cleanup here is needed. 2631 */ 2632 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2633 boolean setState) { 2634 if (mResumedActivity == r) { 2635 mResumedActivity = null; 2636 } 2637 if (mService.mFocusedActivity == r) { 2638 mService.mFocusedActivity = null; 2639 } 2640 2641 r.configDestroy = false; 2642 r.frozenBeforeDestroy = false; 2643 2644 if (setState) { 2645 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2646 r.state = ActivityState.DESTROYED; 2647 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2648 r.app = null; 2649 } 2650 2651 // Make sure this record is no longer in the pending finishes list. 2652 // This could happen, for example, if we are trimming activities 2653 // down to the max limit while they are still waiting to finish. 2654 mStackSupervisor.mFinishingActivities.remove(r); 2655 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2656 2657 // Remove any pending results. 2658 if (r.finishing && r.pendingResults != null) { 2659 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2660 PendingIntentRecord rec = apr.get(); 2661 if (rec != null) { 2662 mService.cancelIntentSenderLocked(rec, false); 2663 } 2664 } 2665 r.pendingResults = null; 2666 } 2667 2668 if (cleanServices) { 2669 cleanUpActivityServicesLocked(r); 2670 } 2671 2672 if (!mService.mPendingThumbnails.isEmpty()) { 2673 // There are clients waiting to receive thumbnails so, in case 2674 // this is an activity that someone is waiting for, add it 2675 // to the pending list so we can correctly update the clients. 2676 mStackSupervisor.mCancelledThumbnails.add(r); 2677 } 2678 2679 // Get rid of any pending idle timeouts. 2680 removeTimeoutsForActivityLocked(r); 2681 } 2682 2683 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2684 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2685 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2686 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2687 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2688 r.finishLaunchTickingLocked(); 2689 } 2690 2691 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2692 mStackSupervisor.removeChildActivityContainers(r); 2693 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2694 r.makeFinishing(); 2695 if (DEBUG_ADD_REMOVE) { 2696 RuntimeException here = new RuntimeException("here"); 2697 here.fillInStackTrace(); 2698 Slog.i(TAG, "Removing activity " + r + " from stack"); 2699 } 2700 final TaskRecord task = r.task; 2701 if (task != null && task.removeActivity(r)) { 2702 if (DEBUG_STACK) Slog.i(TAG, 2703 "removeActivityFromHistoryLocked: last activity removed from " + this); 2704 if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) { 2705 mStackSupervisor.moveHomeToTop(); 2706 } 2707 removeTask(task); 2708 } 2709 r.takeFromHistory(); 2710 removeTimeoutsForActivityLocked(r); 2711 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2712 r.state = ActivityState.DESTROYED; 2713 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2714 r.app = null; 2715 mWindowManager.removeAppToken(r.appToken); 2716 if (VALIDATE_TOKENS) { 2717 validateAppTokensLocked(); 2718 } 2719 cleanUpActivityServicesLocked(r); 2720 r.removeUriPermissionsLocked(); 2721 } 2722 2723 /** 2724 * Perform clean-up of service connections in an activity record. 2725 */ 2726 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2727 // Throw away any services that have been bound by this activity. 2728 if (r.connections != null) { 2729 Iterator<ConnectionRecord> it = r.connections.iterator(); 2730 while (it.hasNext()) { 2731 ConnectionRecord c = it.next(); 2732 mService.mServices.removeConnectionLocked(c, null, r); 2733 } 2734 r.connections = null; 2735 } 2736 } 2737 2738 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2739 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2740 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2741 mHandler.sendMessage(msg); 2742 } 2743 2744 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2745 boolean lastIsOpaque = false; 2746 boolean activityRemoved = false; 2747 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2748 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2749 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2750 final ActivityRecord r = activities.get(activityNdx); 2751 if (r.finishing) { 2752 continue; 2753 } 2754 if (r.fullscreen) { 2755 lastIsOpaque = true; 2756 } 2757 if (owner != null && r.app != owner) { 2758 continue; 2759 } 2760 if (!lastIsOpaque) { 2761 continue; 2762 } 2763 // We can destroy this one if we have its icicle saved and 2764 // it is not in the process of pausing/stopping/finishing. 2765 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2766 && r.haveState && !r.visible && r.stopped 2767 && r.state != ActivityState.DESTROYING 2768 && r.state != ActivityState.DESTROYED) { 2769 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2770 + " resumed=" + mResumedActivity 2771 + " pausing=" + mPausingActivity); 2772 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2773 activityRemoved = true; 2774 } 2775 } 2776 } 2777 } 2778 if (activityRemoved) { 2779 mStackSupervisor.resumeTopActivitiesLocked(); 2780 2781 } 2782 } 2783 2784 /** 2785 * Destroy the current CLIENT SIDE instance of an activity. This may be 2786 * called both when actually finishing an activity, or when performing 2787 * a configuration switch where we destroy the current client-side object 2788 * but then create a new client-side object for this same HistoryRecord. 2789 */ 2790 final boolean destroyActivityLocked(ActivityRecord r, 2791 boolean removeFromApp, boolean oomAdj, String reason) { 2792 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2793 TAG, "Removing activity from " + reason + ": token=" + r 2794 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2795 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2796 r.userId, System.identityHashCode(r), 2797 r.task.taskId, r.shortComponentName, reason); 2798 2799 boolean removedFromHistory = false; 2800 2801 cleanUpActivityLocked(r, false, false); 2802 2803 final boolean hadApp = r.app != null; 2804 2805 if (hadApp) { 2806 if (removeFromApp) { 2807 r.app.activities.remove(r); 2808 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2809 mService.mHeavyWeightProcess = null; 2810 mService.mHandler.sendEmptyMessage( 2811 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2812 } 2813 if (r.app.activities.isEmpty()) { 2814 // No longer have activities, so update LRU list and oom adj. 2815 mService.updateLruProcessLocked(r.app, false, null); 2816 mService.updateOomAdjLocked(); 2817 } 2818 } 2819 2820 boolean skipDestroy = false; 2821 2822 try { 2823 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2824 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2825 r.configChangeFlags); 2826 } catch (Exception e) { 2827 // We can just ignore exceptions here... if the process 2828 // has crashed, our death notification will clean things 2829 // up. 2830 //Slog.w(TAG, "Exception thrown during finish", e); 2831 if (r.finishing) { 2832 removeActivityFromHistoryLocked(r); 2833 removedFromHistory = true; 2834 skipDestroy = true; 2835 } 2836 } 2837 2838 r.nowVisible = false; 2839 2840 // If the activity is finishing, we need to wait on removing it 2841 // from the list to give it a chance to do its cleanup. During 2842 // that time it may make calls back with its token so we need to 2843 // be able to find it on the list and so we don't want to remove 2844 // it from the list yet. Otherwise, we can just immediately put 2845 // it in the destroyed state since we are not removing it from the 2846 // list. 2847 if (r.finishing && !skipDestroy) { 2848 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2849 + " (destroy requested)"); 2850 r.state = ActivityState.DESTROYING; 2851 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2852 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2853 } else { 2854 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 2855 r.state = ActivityState.DESTROYED; 2856 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2857 r.app = null; 2858 } 2859 } else { 2860 // remove this record from the history. 2861 if (r.finishing) { 2862 removeActivityFromHistoryLocked(r); 2863 removedFromHistory = true; 2864 } else { 2865 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 2866 r.state = ActivityState.DESTROYED; 2867 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2868 r.app = null; 2869 } 2870 } 2871 2872 r.configChangeFlags = 0; 2873 2874 if (!mLRUActivities.remove(r) && hadApp) { 2875 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 2876 } 2877 2878 return removedFromHistory; 2879 } 2880 2881 final void activityDestroyedLocked(IBinder token) { 2882 final long origId = Binder.clearCallingIdentity(); 2883 try { 2884 ActivityRecord r = ActivityRecord.forToken(token); 2885 if (r != null) { 2886 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2887 } 2888 2889 if (isInStackLocked(token) != null) { 2890 if (r.state == ActivityState.DESTROYING) { 2891 cleanUpActivityLocked(r, true, false); 2892 removeActivityFromHistoryLocked(r); 2893 } 2894 } 2895 mStackSupervisor.resumeTopActivitiesLocked(); 2896 } finally { 2897 Binder.restoreCallingIdentity(origId); 2898 } 2899 } 2900 2901 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 2902 ProcessRecord app, String listName) { 2903 int i = list.size(); 2904 if (DEBUG_CLEANUP) Slog.v( 2905 TAG, "Removing app " + app + " from list " + listName 2906 + " with " + i + " entries"); 2907 while (i > 0) { 2908 i--; 2909 ActivityRecord r = list.get(i); 2910 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 2911 if (r.app == app) { 2912 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 2913 list.remove(i); 2914 removeTimeoutsForActivityLocked(r); 2915 } 2916 } 2917 } 2918 2919 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 2920 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 2921 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 2922 "mStoppingActivities"); 2923 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 2924 "mGoingToSleepActivities"); 2925 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 2926 "mWaitingVisibleActivities"); 2927 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 2928 "mFinishingActivities"); 2929 2930 boolean hasVisibleActivities = false; 2931 2932 // Clean out the history list. 2933 int i = numActivities(); 2934 if (DEBUG_CLEANUP) Slog.v( 2935 TAG, "Removing app " + app + " from history with " + i + " entries"); 2936 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2937 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2938 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2939 final ActivityRecord r = activities.get(activityNdx); 2940 --i; 2941 if (DEBUG_CLEANUP) Slog.v( 2942 TAG, "Record #" + i + " " + r + ": app=" + r.app); 2943 if (r.app == app) { 2944 boolean remove; 2945 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 2946 // Don't currently have state for the activity, or 2947 // it is finishing -- always remove it. 2948 remove = true; 2949 } else if (r.launchCount > 2 && 2950 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 2951 // We have launched this activity too many times since it was 2952 // able to run, so give up and remove it. 2953 remove = true; 2954 } else { 2955 // The process may be gone, but the activity lives on! 2956 remove = false; 2957 } 2958 if (remove) { 2959 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 2960 RuntimeException here = new RuntimeException("here"); 2961 here.fillInStackTrace(); 2962 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 2963 + ": haveState=" + r.haveState 2964 + " stateNotNeeded=" + r.stateNotNeeded 2965 + " finishing=" + r.finishing 2966 + " state=" + r.state, here); 2967 } 2968 if (!r.finishing) { 2969 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 2970 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2971 r.userId, System.identityHashCode(r), 2972 r.task.taskId, r.shortComponentName, 2973 "proc died without state saved"); 2974 if (r.state == ActivityState.RESUMED) { 2975 mService.updateUsageStats(r, false); 2976 } 2977 } 2978 removeActivityFromHistoryLocked(r); 2979 2980 } else { 2981 // We have the current state for this activity, so 2982 // it can be restarted later when needed. 2983 if (localLOGV) Slog.v( 2984 TAG, "Keeping entry, setting app to null"); 2985 if (r.visible) { 2986 hasVisibleActivities = true; 2987 } 2988 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 2989 + r); 2990 r.app = null; 2991 r.nowVisible = false; 2992 if (!r.haveState) { 2993 if (DEBUG_SAVED_STATE) Slog.i(TAG, 2994 "App died, clearing saved state of " + r); 2995 r.icicle = null; 2996 } 2997 } 2998 2999 cleanUpActivityLocked(r, true, true); 3000 } 3001 } 3002 } 3003 3004 return hasVisibleActivities; 3005 } 3006 3007 final void updateTransitLocked(int transit, Bundle options) { 3008 if (options != null) { 3009 ActivityRecord r = topRunningActivityLocked(null); 3010 if (r != null && r.state != ActivityState.RESUMED) { 3011 r.updateOptionsLocked(options); 3012 } else { 3013 ActivityOptions.abort(options); 3014 } 3015 } 3016 mWindowManager.prepareAppTransition(transit, false); 3017 } 3018 3019 void moveHomeTaskToTop() { 3020 final int top = mTaskHistory.size() - 1; 3021 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3022 final TaskRecord task = mTaskHistory.get(taskNdx); 3023 if (task.isHomeTask()) { 3024 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task); 3025 mTaskHistory.remove(taskNdx); 3026 mTaskHistory.add(top, task); 3027 mWindowManager.moveTaskToTop(task.taskId); 3028 return; 3029 } 3030 } 3031 } 3032 3033 final boolean findTaskToMoveToFrontLocked(int taskId, int flags, Bundle options) { 3034 final TaskRecord task = taskForIdLocked(taskId); 3035 if (task != null) { 3036 if ((flags & ActivityManager.MOVE_TASK_NO_USER_ACTION) == 0) { 3037 mStackSupervisor.mUserLeaving = true; 3038 } 3039 if ((flags & ActivityManager.MOVE_TASK_WITH_HOME) != 0) { 3040 // Caller wants the home activity moved with it. To accomplish this, 3041 // we'll just indicate that this task returns to the home task. 3042 task.mOnTopOfHome = true; 3043 } 3044 moveTaskToFrontLocked(task, null, options); 3045 return true; 3046 } 3047 return false; 3048 } 3049 3050 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3051 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3052 3053 final int numTasks = mTaskHistory.size(); 3054 final int index = mTaskHistory.indexOf(tr); 3055 if (numTasks == 0 || index < 0) { 3056 // nothing to do! 3057 if (reason != null && 3058 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3059 ActivityOptions.abort(options); 3060 } else { 3061 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3062 } 3063 return; 3064 } 3065 3066 moveToFront(); 3067 3068 // Shift all activities with this task up to the top 3069 // of the stack, keeping them in the same internal order. 3070 insertTaskAtTop(tr); 3071 3072 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3073 if (reason != null && 3074 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3075 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3076 ActivityRecord r = topRunningActivityLocked(null); 3077 if (r != null) { 3078 mNoAnimActivities.add(r); 3079 } 3080 ActivityOptions.abort(options); 3081 } else { 3082 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3083 } 3084 3085 mWindowManager.moveTaskToTop(tr.taskId); 3086 3087 mStackSupervisor.resumeTopActivitiesLocked(); 3088 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3089 3090 if (VALIDATE_TOKENS) { 3091 validateAppTokensLocked(); 3092 } 3093 } 3094 3095 /** 3096 * Worker method for rearranging history stack. Implements the function of moving all 3097 * activities for a specific task (gathering them if disjoint) into a single group at the 3098 * bottom of the stack. 3099 * 3100 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3101 * to premeptively cancel the move. 3102 * 3103 * @param taskId The taskId to collect and move to the bottom. 3104 * @return Returns true if the move completed, false if not. 3105 */ 3106 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3107 Slog.i(TAG, "moveTaskToBack: " + taskId); 3108 3109 // If we have a watcher, preflight the move before committing to it. First check 3110 // for *other* available tasks, but if none are available, then try again allowing the 3111 // current task to be selected. 3112 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3113 ActivityRecord next = topRunningActivityLocked(null, taskId); 3114 if (next == null) { 3115 next = topRunningActivityLocked(null, 0); 3116 } 3117 if (next != null) { 3118 // ask watcher if this is allowed 3119 boolean moveOK = true; 3120 try { 3121 moveOK = mService.mController.activityResuming(next.packageName); 3122 } catch (RemoteException e) { 3123 mService.mController = null; 3124 Watchdog.getInstance().setActivityController(null); 3125 } 3126 if (!moveOK) { 3127 return false; 3128 } 3129 } 3130 } 3131 3132 if (DEBUG_TRANSITION) Slog.v(TAG, 3133 "Prepare to back transition: task=" + taskId); 3134 3135 final TaskRecord tr = taskForIdLocked(taskId); 3136 if (tr == null) { 3137 return false; 3138 } 3139 3140 mTaskHistory.remove(tr); 3141 mTaskHistory.add(0, tr); 3142 3143 // There is an assumption that moving a task to the back moves it behind the home activity. 3144 // We make sure here that some activity in the stack will launch home. 3145 ActivityRecord lastActivity = null; 3146 int numTasks = mTaskHistory.size(); 3147 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3148 final TaskRecord task = mTaskHistory.get(taskNdx); 3149 if (task.mOnTopOfHome) { 3150 break; 3151 } 3152 if (taskNdx == 1) { 3153 // Set the last task before tr to go to home. 3154 task.mOnTopOfHome = true; 3155 } 3156 } 3157 3158 if (reason != null && 3159 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3160 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3161 ActivityRecord r = topRunningActivityLocked(null); 3162 if (r != null) { 3163 mNoAnimActivities.add(r); 3164 } 3165 } else { 3166 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3167 } 3168 mWindowManager.moveTaskToBottom(taskId); 3169 3170 if (VALIDATE_TOKENS) { 3171 validateAppTokensLocked(); 3172 } 3173 3174 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3175 if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) { 3176 tr.mOnTopOfHome = false; 3177 return mStackSupervisor.resumeHomeActivity(null); 3178 } 3179 3180 mStackSupervisor.resumeTopActivitiesLocked(); 3181 return true; 3182 } 3183 3184 static final void logStartActivity(int tag, ActivityRecord r, 3185 TaskRecord task) { 3186 final Uri data = r.intent.getData(); 3187 final String strData = data != null ? data.toSafeString() : null; 3188 3189 EventLog.writeEvent(tag, 3190 r.userId, System.identityHashCode(r), task.taskId, 3191 r.shortComponentName, r.intent.getAction(), 3192 r.intent.getType(), strData, r.intent.getFlags()); 3193 } 3194 3195 /** 3196 * Make sure the given activity matches the current configuration. Returns 3197 * false if the activity had to be destroyed. Returns true if the 3198 * configuration is the same, or the activity will remain running as-is 3199 * for whatever reason. Ensures the HistoryRecord is updated with the 3200 * correct configuration and all other bookkeeping is handled. 3201 */ 3202 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3203 int globalChanges) { 3204 if (mConfigWillChange) { 3205 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3206 "Skipping config check (will change): " + r); 3207 return true; 3208 } 3209 3210 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3211 "Ensuring correct configuration: " + r); 3212 3213 // Short circuit: if the two configurations are the exact same 3214 // object (the common case), then there is nothing to do. 3215 Configuration newConfig = mService.mConfiguration; 3216 if (r.configuration == newConfig && !r.forceNewConfig) { 3217 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3218 "Configuration unchanged in " + r); 3219 return true; 3220 } 3221 3222 // We don't worry about activities that are finishing. 3223 if (r.finishing) { 3224 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3225 "Configuration doesn't matter in finishing " + r); 3226 r.stopFreezingScreenLocked(false); 3227 return true; 3228 } 3229 3230 // Okay we now are going to make this activity have the new config. 3231 // But then we need to figure out how it needs to deal with that. 3232 Configuration oldConfig = r.configuration; 3233 r.configuration = newConfig; 3234 3235 // Determine what has changed. May be nothing, if this is a config 3236 // that has come back from the app after going idle. In that case 3237 // we just want to leave the official config object now in the 3238 // activity and do nothing else. 3239 final int changes = oldConfig.diff(newConfig); 3240 if (changes == 0 && !r.forceNewConfig) { 3241 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3242 "Configuration no differences in " + r); 3243 return true; 3244 } 3245 3246 // If the activity isn't currently running, just leave the new 3247 // configuration and it will pick that up next time it starts. 3248 if (r.app == null || r.app.thread == null) { 3249 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3250 "Configuration doesn't matter not running " + r); 3251 r.stopFreezingScreenLocked(false); 3252 r.forceNewConfig = false; 3253 return true; 3254 } 3255 3256 // Figure out how to handle the changes between the configurations. 3257 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3258 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3259 + Integer.toHexString(changes) + ", handles=0x" 3260 + Integer.toHexString(r.info.getRealConfigChanged()) 3261 + ", newConfig=" + newConfig); 3262 } 3263 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3264 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3265 r.configChangeFlags |= changes; 3266 r.startFreezingScreenLocked(r.app, globalChanges); 3267 r.forceNewConfig = false; 3268 if (r.app == null || r.app.thread == null) { 3269 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3270 "Config is destroying non-running " + r); 3271 destroyActivityLocked(r, true, false, "config"); 3272 } else if (r.state == ActivityState.PAUSING) { 3273 // A little annoying: we are waiting for this activity to 3274 // finish pausing. Let's not do anything now, but just 3275 // flag that it needs to be restarted when done pausing. 3276 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3277 "Config is skipping already pausing " + r); 3278 r.configDestroy = true; 3279 return true; 3280 } else if (r.state == ActivityState.RESUMED) { 3281 // Try to optimize this case: the configuration is changing 3282 // and we need to restart the top, resumed activity. 3283 // Instead of doing the normal handshaking, just say 3284 // "restart!". 3285 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3286 "Config is relaunching resumed " + r); 3287 relaunchActivityLocked(r, r.configChangeFlags, true); 3288 r.configChangeFlags = 0; 3289 } else { 3290 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3291 "Config is relaunching non-resumed " + r); 3292 relaunchActivityLocked(r, r.configChangeFlags, false); 3293 r.configChangeFlags = 0; 3294 } 3295 3296 // All done... tell the caller we weren't able to keep this 3297 // activity around. 3298 return false; 3299 } 3300 3301 // Default case: the activity can handle this new configuration, so 3302 // hand it over. Note that we don't need to give it the new 3303 // configuration, since we always send configuration changes to all 3304 // process when they happen so it can just use whatever configuration 3305 // it last got. 3306 if (r.app != null && r.app.thread != null) { 3307 try { 3308 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3309 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3310 } catch (RemoteException e) { 3311 // If process died, whatever. 3312 } 3313 } 3314 r.stopFreezingScreenLocked(false); 3315 3316 return true; 3317 } 3318 3319 private boolean relaunchActivityLocked(ActivityRecord r, 3320 int changes, boolean andResume) { 3321 List<ResultInfo> results = null; 3322 List<Intent> newIntents = null; 3323 if (andResume) { 3324 results = r.results; 3325 newIntents = r.newIntents; 3326 } 3327 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3328 + " with results=" + results + " newIntents=" + newIntents 3329 + " andResume=" + andResume); 3330 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3331 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3332 r.task.taskId, r.shortComponentName); 3333 3334 r.startFreezingScreenLocked(r.app, 0); 3335 3336 mStackSupervisor.removeChildActivityContainers(r); 3337 3338 try { 3339 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3340 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3341 + r); 3342 r.forceNewConfig = false; 3343 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3344 changes, !andResume, new Configuration(mService.mConfiguration)); 3345 // Note: don't need to call pauseIfSleepingLocked() here, because 3346 // the caller will only pass in 'andResume' if this activity is 3347 // currently resumed, which implies we aren't sleeping. 3348 } catch (RemoteException e) { 3349 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3350 } 3351 3352 if (andResume) { 3353 r.results = null; 3354 r.newIntents = null; 3355 r.state = ActivityState.RESUMED; 3356 } else { 3357 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3358 r.state = ActivityState.PAUSED; 3359 } 3360 3361 return true; 3362 } 3363 3364 boolean willActivityBeVisibleLocked(IBinder token) { 3365 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3366 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3367 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3368 final ActivityRecord r = activities.get(activityNdx); 3369 if (r.appToken == token) { 3370 return true; 3371 } 3372 if (r.fullscreen && !r.finishing) { 3373 return false; 3374 } 3375 } 3376 } 3377 final ActivityRecord r = ActivityRecord.forToken(token); 3378 if (r == null) { 3379 return false; 3380 } 3381 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3382 + " would have returned true for r=" + r); 3383 return !r.finishing; 3384 } 3385 3386 void closeSystemDialogsLocked() { 3387 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3388 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3389 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3390 final ActivityRecord r = activities.get(activityNdx); 3391 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3392 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3393 } 3394 } 3395 } 3396 } 3397 3398 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3399 boolean didSomething = false; 3400 TaskRecord lastTask = null; 3401 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3402 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3403 int numActivities = activities.size(); 3404 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3405 ActivityRecord r = activities.get(activityNdx); 3406 final boolean samePackage = r.packageName.equals(name) 3407 || (name == null && r.userId == userId); 3408 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3409 && (samePackage || r.task == lastTask) 3410 && (r.app == null || evenPersistent || !r.app.persistent)) { 3411 if (!doit) { 3412 if (r.finishing) { 3413 // If this activity is just finishing, then it is not 3414 // interesting as far as something to stop. 3415 continue; 3416 } 3417 return true; 3418 } 3419 didSomething = true; 3420 Slog.i(TAG, " Force finishing activity " + r); 3421 if (samePackage) { 3422 if (r.app != null) { 3423 r.app.removed = true; 3424 } 3425 r.app = null; 3426 } 3427 lastTask = r.task; 3428 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3429 true)) { 3430 // r has been deleted from mActivities, accommodate. 3431 --numActivities; 3432 --activityNdx; 3433 } 3434 } 3435 } 3436 } 3437 return didSomething; 3438 } 3439 3440 ActivityRecord getTasksLocked(IThumbnailReceiver receiver, 3441 PendingThumbnailsRecord pending, List<RunningTaskInfo> list) { 3442 ActivityRecord topRecord = null; 3443 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3444 final TaskRecord task = mTaskHistory.get(taskNdx); 3445 ActivityRecord r = null; 3446 ActivityRecord top = null; 3447 int numActivities = 0; 3448 int numRunning = 0; 3449 final ArrayList<ActivityRecord> activities = task.mActivities; 3450 if (activities.isEmpty()) { 3451 continue; 3452 } 3453 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3454 r = activities.get(activityNdx); 3455 3456 // Initialize state for next task if needed. 3457 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3458 top = r; 3459 numActivities = numRunning = 0; 3460 } 3461 3462 // Add 'r' into the current task. 3463 numActivities++; 3464 if (r.app != null && r.app.thread != null) { 3465 numRunning++; 3466 } 3467 3468 if (localLOGV) Slog.v( 3469 TAG, r.intent.getComponent().flattenToShortString() 3470 + ": task=" + r.task); 3471 } 3472 3473 RunningTaskInfo ci = new RunningTaskInfo(); 3474 ci.id = task.taskId; 3475 ci.baseActivity = r.intent.getComponent(); 3476 ci.topActivity = top.intent.getComponent(); 3477 ci.lastActiveTime = task.lastActiveTime; 3478 3479 if (top.thumbHolder != null) { 3480 ci.description = top.thumbHolder.lastDescription; 3481 } 3482 ci.numActivities = numActivities; 3483 ci.numRunning = numRunning; 3484 //System.out.println( 3485 // "#" + maxNum + ": " + " descr=" + ci.description); 3486 if (receiver != null) { 3487 if (localLOGV) Slog.v( 3488 TAG, "State=" + top.state + "Idle=" + top.idle 3489 + " app=" + top.app 3490 + " thr=" + (top.app != null ? top.app.thread : null)); 3491 if (top.state == ActivityState.RESUMED || top.state == ActivityState.PAUSING) { 3492 if (top.idle && top.app != null && top.app.thread != null) { 3493 topRecord = top; 3494 } else { 3495 top.thumbnailNeeded = true; 3496 } 3497 } 3498 pending.pendingRecords.add(top); 3499 } 3500 list.add(ci); 3501 } 3502 return topRecord; 3503 } 3504 3505 public void unhandledBackLocked() { 3506 final int top = mTaskHistory.size() - 1; 3507 if (DEBUG_SWITCH) Slog.d( 3508 TAG, "Performing unhandledBack(): top activity at " + top); 3509 if (top >= 0) { 3510 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3511 int activityTop = activities.size() - 1; 3512 if (activityTop > 0) { 3513 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3514 "unhandled-back", true); 3515 } 3516 } 3517 } 3518 3519 /** 3520 * Reset local parameters because an app's activity died. 3521 * @param app The app of the activity that died. 3522 * @return result from removeHistoryRecordsForAppLocked. 3523 */ 3524 boolean handleAppDiedLocked(ProcessRecord app) { 3525 if (mPausingActivity != null && mPausingActivity.app == app) { 3526 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3527 "App died while pausing: " + mPausingActivity); 3528 mPausingActivity = null; 3529 } 3530 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3531 mLastPausedActivity = null; 3532 mLastNoHistoryActivity = null; 3533 } 3534 3535 return removeHistoryRecordsForAppLocked(app); 3536 } 3537 3538 void handleAppCrashLocked(ProcessRecord app) { 3539 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3540 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3541 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3542 final ActivityRecord r = activities.get(activityNdx); 3543 if (r.app == app) { 3544 Slog.w(TAG, " Force finishing activity " 3545 + r.intent.getComponent().flattenToShortString()); 3546 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3547 } 3548 } 3549 } 3550 } 3551 3552 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3553 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3554 boolean printed = false; 3555 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3556 final TaskRecord task = mTaskHistory.get(taskNdx); 3557 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3558 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3559 dumpClient, dumpPackage, needSep, header, 3560 " Task id #" + task.taskId); 3561 if (printed) { 3562 header = null; 3563 } 3564 } 3565 return printed; 3566 } 3567 3568 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3569 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3570 3571 if ("all".equals(name)) { 3572 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3573 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3574 } 3575 } else if ("top".equals(name)) { 3576 final int top = mTaskHistory.size() - 1; 3577 if (top >= 0) { 3578 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3579 int listTop = list.size() - 1; 3580 if (listTop >= 0) { 3581 activities.add(list.get(listTop)); 3582 } 3583 } 3584 } else { 3585 ItemMatcher matcher = new ItemMatcher(); 3586 matcher.build(name); 3587 3588 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3589 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3590 if (matcher.match(r1, r1.intent.getComponent())) { 3591 activities.add(r1); 3592 } 3593 } 3594 } 3595 } 3596 3597 return activities; 3598 } 3599 3600 ActivityRecord restartPackage(String packageName) { 3601 ActivityRecord starting = topRunningActivityLocked(null); 3602 3603 // All activities that came from the package must be 3604 // restarted as if there was a config change. 3605 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3606 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3607 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3608 final ActivityRecord a = activities.get(activityNdx); 3609 if (a.info.packageName.equals(packageName)) { 3610 a.forceNewConfig = true; 3611 if (starting != null && a == starting && a.visible) { 3612 a.startFreezingScreenLocked(starting.app, 3613 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3614 } 3615 } 3616 } 3617 } 3618 3619 return starting; 3620 } 3621 3622 void removeTask(TaskRecord task) { 3623 mWindowManager.removeTask(task.taskId); 3624 final ActivityRecord r = mResumedActivity; 3625 if (r != null && r.task == task) { 3626 mResumedActivity = null; 3627 } 3628 3629 final int taskNdx = mTaskHistory.indexOf(task); 3630 final int topTaskNdx = mTaskHistory.size() - 1; 3631 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3632 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3633 } 3634 mTaskHistory.remove(task); 3635 3636 if (mTaskHistory.isEmpty()) { 3637 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3638 if (isOnHomeDisplay()) { 3639 mStackSupervisor.moveHomeStack(!isHomeStack()); 3640 } 3641 if (mStacks != null) { 3642 mStacks.remove(this); 3643 mStacks.add(0, this); 3644 } 3645 } 3646 } 3647 3648 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, boolean toTop) { 3649 TaskRecord task = new TaskRecord(taskId, info, intent); 3650 addTask(task, toTop); 3651 return task; 3652 } 3653 3654 ArrayList<TaskRecord> getAllTasks() { 3655 return new ArrayList<TaskRecord>(mTaskHistory); 3656 } 3657 3658 void addTask(final TaskRecord task, final boolean toTop) { 3659 task.stack = this; 3660 if (toTop) { 3661 insertTaskAtTop(task); 3662 } else { 3663 mTaskHistory.add(0, task); 3664 } 3665 } 3666 3667 public int getStackId() { 3668 return mStackId; 3669 } 3670 3671 @Override 3672 public String toString() { 3673 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3674 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3675 } 3676} 3677