ActivityStack.java revision 71dd1b63436e9cdd5cbd2d42cd5841d497da8238
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) { 1237 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1238 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1239 try { 1240 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1241 waitingActivity.appToken, r != null); 1242 } catch (RemoteException e) { 1243 } 1244 } 1245 } 1246 } 1247 } 1248 1249 /** 1250 * Ensure that the top activity in the stack is resumed. 1251 * 1252 * @param prev The previously resumed activity, for when in the process 1253 * of pausing; can be null to call from elsewhere. 1254 * 1255 * @return Returns true if something is being resumed, or false if 1256 * nothing happened. 1257 */ 1258 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1259 return resumeTopActivityLocked(prev, null); 1260 } 1261 1262 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1263 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1264 1265 ActivityRecord parent = mActivityContainer.mParentActivity; 1266 if (parent != null && parent.state != ActivityState.RESUMED) { 1267 // Do not resume this stack if its parent is not resumed. 1268 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1269 return false; 1270 } 1271 1272 // Find the first activity that is not finishing. 1273 ActivityRecord next = topRunningActivityLocked(null); 1274 1275 // Remember how we'll process this pause/resume situation, and ensure 1276 // that the state is reset however we wind up proceeding. 1277 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1278 mStackSupervisor.mUserLeaving = false; 1279 1280 if (next == null) { 1281 // There are no more activities! Let's just start up the 1282 // Launcher... 1283 ActivityOptions.abort(options); 1284 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1285 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1286 // Only resume home if on home display 1287 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1288 } 1289 1290 next.delayedResume = false; 1291 1292 // If the top activity is the resumed one, nothing to do. 1293 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1294 mStackSupervisor.allResumedActivitiesComplete()) { 1295 // Make sure we have executed any pending transitions, since there 1296 // should be nothing left to do at this point. 1297 mWindowManager.executeAppTransition(); 1298 mNoAnimActivities.clear(); 1299 ActivityOptions.abort(options); 1300 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1301 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1302 return false; 1303 } 1304 1305 final TaskRecord nextTask = next.task; 1306 final TaskRecord prevTask = prev != null ? prev.task : null; 1307 if (prevTask != null && prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1308 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1309 if (prevTask == nextTask) { 1310 prevTask.setFrontOfTask(); 1311 } else if (prevTask != topTask()) { 1312 // This task is going away but it was supposed to return to the home task. 1313 // Now the task above it has to return to the home task instead. 1314 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1315 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1316 } else { 1317 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1318 "resumeTopActivityLocked: Launching home next"); 1319 // Only resume home if on home display 1320 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1321 } 1322 } 1323 1324 // If we are sleeping, and there is no resumed activity, and the top 1325 // activity is paused, well that is the state we want. 1326 if (mService.isSleepingOrShuttingDown() 1327 && mLastPausedActivity == next 1328 && mStackSupervisor.allPausedActivitiesComplete()) { 1329 // Make sure we have executed any pending transitions, since there 1330 // should be nothing left to do at this point. 1331 mWindowManager.executeAppTransition(); 1332 mNoAnimActivities.clear(); 1333 ActivityOptions.abort(options); 1334 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1335 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1336 return false; 1337 } 1338 1339 // Make sure that the user who owns this activity is started. If not, 1340 // we will just leave it as is because someone should be bringing 1341 // another user's activities to the top of the stack. 1342 if (mService.mStartedUsers.get(next.userId) == null) { 1343 Slog.w(TAG, "Skipping resume of top activity " + next 1344 + ": user " + next.userId + " is stopped"); 1345 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1346 return false; 1347 } 1348 1349 // The activity may be waiting for stop, but that is no longer 1350 // appropriate for it. 1351 mStackSupervisor.mStoppingActivities.remove(next); 1352 mStackSupervisor.mGoingToSleepActivities.remove(next); 1353 next.sleeping = false; 1354 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1355 1356 next.updateOptionsLocked(options); 1357 1358 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1359 1360 // If we are currently pausing an activity, then don't do anything 1361 // until that is done. 1362 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1363 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1364 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1365 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1366 return false; 1367 } 1368 1369 // Okay we are now going to start a switch, to 'next'. We may first 1370 // have to pause the current activity, but this is an important point 1371 // where we have decided to go to 'next' so keep track of that. 1372 // XXX "App Redirected" dialog is getting too many false positives 1373 // at this point, so turn off for now. 1374 if (false) { 1375 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1376 long now = SystemClock.uptimeMillis(); 1377 final boolean inTime = mLastStartedActivity.startTime != 0 1378 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1379 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1380 final int nextUid = next.info.applicationInfo.uid; 1381 if (inTime && lastUid != nextUid 1382 && lastUid != next.launchedFromUid 1383 && mService.checkPermission( 1384 android.Manifest.permission.STOP_APP_SWITCHES, 1385 -1, next.launchedFromUid) 1386 != PackageManager.PERMISSION_GRANTED) { 1387 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1388 } else { 1389 next.startTime = now; 1390 mLastStartedActivity = next; 1391 } 1392 } else { 1393 next.startTime = SystemClock.uptimeMillis(); 1394 mLastStartedActivity = next; 1395 } 1396 } 1397 1398 // We need to start pausing the current activity so the top one 1399 // can be resumed... 1400 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1401 if (mResumedActivity != null) { 1402 pausing = true; 1403 startPausingLocked(userLeaving, false); 1404 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1405 } 1406 if (pausing) { 1407 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1408 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1409 // At this point we want to put the upcoming activity's process 1410 // at the top of the LRU list, since we know we will be needing it 1411 // very soon and it would be a waste to let it get killed if it 1412 // happens to be sitting towards the end. 1413 if (next.app != null && next.app.thread != null) { 1414 // No reason to do full oom adj update here; we'll let that 1415 // happen whenever it needs to later. 1416 mService.updateLruProcessLocked(next.app, true, null); 1417 } 1418 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1419 return true; 1420 } 1421 1422 // If the most recent activity was noHistory but was only stopped rather 1423 // than stopped+finished because the device went to sleep, we need to make 1424 // sure to finish it as we're making a new activity topmost. 1425 if (mService.mSleeping && mLastNoHistoryActivity != null && 1426 !mLastNoHistoryActivity.finishing) { 1427 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1428 " on new resume"); 1429 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1430 null, "no-history", false); 1431 mLastNoHistoryActivity = null; 1432 } 1433 1434 if (prev != null && prev != next) { 1435 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1436 prev.waitingVisible = true; 1437 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1438 if (DEBUG_SWITCH) Slog.v( 1439 TAG, "Resuming top, waiting visible to hide: " + prev); 1440 } else { 1441 // The next activity is already visible, so hide the previous 1442 // activity's windows right now so we can show the new one ASAP. 1443 // We only do this if the previous is finishing, which should mean 1444 // it is on top of the one being resumed so hiding it quickly 1445 // is good. Otherwise, we want to do the normal route of allowing 1446 // the resumed activity to be shown so we can decide if the 1447 // previous should actually be hidden depending on whether the 1448 // new one is found to be full-screen or not. 1449 if (prev.finishing) { 1450 mWindowManager.setAppVisibility(prev.appToken, false); 1451 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1452 + prev + ", waitingVisible=" 1453 + (prev != null ? prev.waitingVisible : null) 1454 + ", nowVisible=" + next.nowVisible); 1455 } else { 1456 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1457 + prev + ", waitingVisible=" 1458 + (prev != null ? prev.waitingVisible : null) 1459 + ", nowVisible=" + next.nowVisible); 1460 } 1461 } 1462 } 1463 1464 // Launching this app's activity, make sure the app is no longer 1465 // considered stopped. 1466 try { 1467 AppGlobals.getPackageManager().setPackageStoppedState( 1468 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1469 } catch (RemoteException e1) { 1470 } catch (IllegalArgumentException e) { 1471 Slog.w(TAG, "Failed trying to unstop package " 1472 + next.packageName + ": " + e); 1473 } 1474 1475 // We are starting up the next activity, so tell the window manager 1476 // that the previous one will be hidden soon. This way it can know 1477 // to ignore it when computing the desired screen orientation. 1478 boolean anim = true; 1479 if (prev != null) { 1480 if (prev.finishing) { 1481 if (DEBUG_TRANSITION) Slog.v(TAG, 1482 "Prepare close transition: prev=" + prev); 1483 if (mNoAnimActivities.contains(prev)) { 1484 anim = false; 1485 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1486 } else { 1487 mWindowManager.prepareAppTransition(prev.task == next.task 1488 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1489 : AppTransition.TRANSIT_TASK_CLOSE, false); 1490 } 1491 mWindowManager.setAppWillBeHidden(prev.appToken); 1492 mWindowManager.setAppVisibility(prev.appToken, false); 1493 } else { 1494 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1495 if (mNoAnimActivities.contains(next)) { 1496 anim = false; 1497 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1498 } else { 1499 mWindowManager.prepareAppTransition(prev.task == next.task 1500 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1501 : AppTransition.TRANSIT_TASK_OPEN, false); 1502 } 1503 } 1504 if (false) { 1505 mWindowManager.setAppWillBeHidden(prev.appToken); 1506 mWindowManager.setAppVisibility(prev.appToken, false); 1507 } 1508 } else { 1509 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1510 if (mNoAnimActivities.contains(next)) { 1511 anim = false; 1512 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1513 } else { 1514 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1515 } 1516 } 1517 if (anim) { 1518 next.applyOptionsLocked(); 1519 } else { 1520 next.clearOptionsLocked(); 1521 } 1522 1523 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1524 if (next.app != null && next.app.thread != null) { 1525 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1526 1527 // This activity is now becoming visible. 1528 mWindowManager.setAppVisibility(next.appToken, true); 1529 1530 // schedule launch ticks to collect information about slow apps. 1531 next.startLaunchTickingLocked(); 1532 1533 ActivityRecord lastResumedActivity = 1534 lastStack == null ? null :lastStack.mResumedActivity; 1535 ActivityState lastState = next.state; 1536 1537 mService.updateCpuStats(); 1538 1539 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1540 next.state = ActivityState.RESUMED; 1541 mResumedActivity = next; 1542 next.task.touchActiveTime(); 1543 mService.addRecentTaskLocked(next.task); 1544 mService.updateLruProcessLocked(next.app, true, null); 1545 updateLRUListLocked(next); 1546 mService.updateOomAdjLocked(); 1547 1548 // Have the window manager re-evaluate the orientation of 1549 // the screen based on the new activity order. 1550 boolean notUpdated = true; 1551 if (mStackSupervisor.isFrontStack(this)) { 1552 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1553 mService.mConfiguration, 1554 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1555 if (config != null) { 1556 next.frozenBeforeDestroy = true; 1557 } 1558 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1559 } 1560 1561 if (notUpdated) { 1562 // The configuration update wasn't able to keep the existing 1563 // instance of the activity, and instead started a new one. 1564 // We should be all done, but let's just make sure our activity 1565 // is still at the top and schedule another run if something 1566 // weird happened. 1567 ActivityRecord nextNext = topRunningActivityLocked(null); 1568 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1569 "Activity config changed during resume: " + next 1570 + ", new next: " + nextNext); 1571 if (nextNext != next) { 1572 // Do over! 1573 mStackSupervisor.scheduleResumeTopActivities(); 1574 } 1575 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1576 mNoAnimActivities.clear(); 1577 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1578 return true; 1579 } 1580 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1581 return false; 1582 } 1583 1584 try { 1585 // Deliver all pending results. 1586 ArrayList<ResultInfo> a = next.results; 1587 if (a != null) { 1588 final int N = a.size(); 1589 if (!next.finishing && N > 0) { 1590 if (DEBUG_RESULTS) Slog.v( 1591 TAG, "Delivering results to " + next 1592 + ": " + a); 1593 next.app.thread.scheduleSendResult(next.appToken, a); 1594 } 1595 } 1596 1597 if (next.newIntents != null) { 1598 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1599 } 1600 1601 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1602 next.userId, System.identityHashCode(next), 1603 next.task.taskId, next.shortComponentName); 1604 1605 next.sleeping = false; 1606 mService.showAskCompatModeDialogLocked(next); 1607 next.app.pendingUiClean = true; 1608 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1609 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1610 mService.isNextTransitionForward()); 1611 1612 mStackSupervisor.checkReadyForSleepLocked(); 1613 1614 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1615 } catch (Exception e) { 1616 // Whoops, need to restart this activity! 1617 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1618 + lastState + ": " + next); 1619 next.state = lastState; 1620 if (lastStack != null) { 1621 lastStack.mResumedActivity = lastResumedActivity; 1622 } 1623 Slog.i(TAG, "Restarting because process died: " + next); 1624 if (!next.hasBeenLaunched) { 1625 next.hasBeenLaunched = true; 1626 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1627 mStackSupervisor.isFrontStack(lastStack)) { 1628 mWindowManager.setAppStartingWindow( 1629 next.appToken, next.packageName, next.theme, 1630 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1631 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1632 next.windowFlags, null, true); 1633 } 1634 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1635 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1636 return true; 1637 } 1638 1639 // From this point on, if something goes wrong there is no way 1640 // to recover the activity. 1641 try { 1642 next.visible = true; 1643 completeResumeLocked(next); 1644 } catch (Exception e) { 1645 // If any exception gets thrown, toss away this 1646 // activity and try the next one. 1647 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1648 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1649 "resume-exception", true); 1650 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1651 return true; 1652 } 1653 next.stopped = false; 1654 1655 } else { 1656 // Whoops, need to restart this activity! 1657 if (!next.hasBeenLaunched) { 1658 next.hasBeenLaunched = true; 1659 } else { 1660 if (SHOW_APP_STARTING_PREVIEW) { 1661 mWindowManager.setAppStartingWindow( 1662 next.appToken, next.packageName, next.theme, 1663 mService.compatibilityInfoForPackageLocked( 1664 next.info.applicationInfo), 1665 next.nonLocalizedLabel, 1666 next.labelRes, next.icon, next.logo, next.windowFlags, 1667 null, true); 1668 } 1669 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1670 } 1671 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1672 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1673 } 1674 1675 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1676 return true; 1677 } 1678 1679 private void insertTaskAtTop(TaskRecord task) { 1680 // If this is being moved to the top by another activity or being launched from the home 1681 // activity, set mOnTopOfHome accordingly. 1682 if (isOnHomeDisplay()) { 1683 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1684 final boolean fromHome = lastStack.isHomeStack(); 1685 if (!isHomeStack() && (fromHome || topTask() != task)) { 1686 task.mOnTopOfHome = fromHome; 1687 } 1688 } else { 1689 task.mOnTopOfHome = false; 1690 } 1691 1692 mTaskHistory.remove(task); 1693 // Now put task at top. 1694 int stackNdx = mTaskHistory.size(); 1695 if (task.userId != mCurrentUser) { 1696 // Put non-current user tasks below current user tasks. 1697 while (--stackNdx >= 0) { 1698 if (mTaskHistory.get(stackNdx).userId != mCurrentUser) { 1699 break; 1700 } 1701 } 1702 ++stackNdx; 1703 } 1704 mTaskHistory.add(stackNdx, task); 1705 } 1706 1707 final void startActivityLocked(ActivityRecord r, boolean newTask, 1708 boolean doResume, boolean keepCurTransition, Bundle options) { 1709 TaskRecord rTask = r.task; 1710 final int taskId = rTask.taskId; 1711 if (taskForIdLocked(taskId) == null || newTask) { 1712 // Last activity in task had been removed or ActivityManagerService is reusing task. 1713 // Insert or replace. 1714 // Might not even be in. 1715 insertTaskAtTop(rTask); 1716 mWindowManager.moveTaskToTop(taskId); 1717 } 1718 TaskRecord task = null; 1719 if (!newTask) { 1720 // If starting in an existing task, find where that is... 1721 boolean startIt = true; 1722 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1723 task = mTaskHistory.get(taskNdx); 1724 if (task == r.task) { 1725 // Here it is! Now, if this is not yet visible to the 1726 // user, then just add it without starting; it will 1727 // get started when the user navigates back to it. 1728 if (!startIt) { 1729 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1730 + task, new RuntimeException("here").fillInStackTrace()); 1731 task.addActivityToTop(r); 1732 r.putInHistory(); 1733 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1734 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1735 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1736 r.userId, r.info.configChanges); 1737 if (VALIDATE_TOKENS) { 1738 validateAppTokensLocked(); 1739 } 1740 ActivityOptions.abort(options); 1741 return; 1742 } 1743 break; 1744 } else if (task.numFullscreen > 0) { 1745 startIt = false; 1746 } 1747 } 1748 } 1749 1750 // Place a new activity at top of stack, so it is next to interact 1751 // with the user. 1752 1753 // If we are not placing the new activity frontmost, we do not want 1754 // to deliver the onUserLeaving callback to the actual frontmost 1755 // activity 1756 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1757 mStackSupervisor.mUserLeaving = false; 1758 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1759 "startActivity() behind front, mUserLeaving=false"); 1760 } 1761 1762 task = r.task; 1763 1764 // Slot the activity into the history stack and proceed 1765 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1766 new RuntimeException("here").fillInStackTrace()); 1767 task.addActivityToTop(r); 1768 task.setFrontOfTask(); 1769 1770 r.putInHistory(); 1771 if (!isHomeStack() || numActivities() > 0) { 1772 // We want to show the starting preview window if we are 1773 // switching to a new task, or the next activity's process is 1774 // not currently running. 1775 boolean showStartingIcon = newTask; 1776 ProcessRecord proc = r.app; 1777 if (proc == null) { 1778 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1779 } 1780 if (proc == null || proc.thread == null) { 1781 showStartingIcon = true; 1782 } 1783 if (DEBUG_TRANSITION) Slog.v(TAG, 1784 "Prepare open transition: starting " + r); 1785 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1786 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1787 mNoAnimActivities.add(r); 1788 } else { 1789 mWindowManager.prepareAppTransition(newTask 1790 ? AppTransition.TRANSIT_TASK_OPEN 1791 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1792 mNoAnimActivities.remove(r); 1793 } 1794 r.updateOptionsLocked(options); 1795 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1796 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1797 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1798 r.info.configChanges); 1799 boolean doShow = true; 1800 if (newTask) { 1801 // Even though this activity is starting fresh, we still need 1802 // to reset it to make sure we apply affinities to move any 1803 // existing activities from other tasks in to it. 1804 // If the caller has requested that the target task be 1805 // reset, then do so. 1806 if ((r.intent.getFlags() 1807 &Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1808 resetTaskIfNeededLocked(r, r); 1809 doShow = topRunningNonDelayedActivityLocked(null) == r; 1810 } 1811 } 1812 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1813 // Figure out if we are transitioning from another activity that is 1814 // "has the same starting icon" as the next one. This allows the 1815 // window manager to keep the previous window it had previously 1816 // created, if it still had one. 1817 ActivityRecord prev = mResumedActivity; 1818 if (prev != null) { 1819 // We don't want to reuse the previous starting preview if: 1820 // (1) The current activity is in a different task. 1821 if (prev.task != r.task) { 1822 prev = null; 1823 } 1824 // (2) The current activity is already displayed. 1825 else if (prev.nowVisible) { 1826 prev = null; 1827 } 1828 } 1829 mWindowManager.setAppStartingWindow( 1830 r.appToken, r.packageName, r.theme, 1831 mService.compatibilityInfoForPackageLocked( 1832 r.info.applicationInfo), r.nonLocalizedLabel, 1833 r.labelRes, r.icon, r.logo, r.windowFlags, 1834 prev != null ? prev.appToken : null, showStartingIcon); 1835 } 1836 } else { 1837 // If this is the first activity, don't do any fancy animations, 1838 // because there is nothing for it to animate on top of. 1839 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1840 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1841 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1842 r.info.configChanges); 1843 ActivityOptions.abort(options); 1844 } 1845 if (VALIDATE_TOKENS) { 1846 validateAppTokensLocked(); 1847 } 1848 1849 if (doResume) { 1850 mStackSupervisor.resumeTopActivitiesLocked(); 1851 } 1852 } 1853 1854 final void validateAppTokensLocked() { 1855 mValidateAppTokens.clear(); 1856 mValidateAppTokens.ensureCapacity(numActivities()); 1857 final int numTasks = mTaskHistory.size(); 1858 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1859 TaskRecord task = mTaskHistory.get(taskNdx); 1860 final ArrayList<ActivityRecord> activities = task.mActivities; 1861 if (activities.isEmpty()) { 1862 continue; 1863 } 1864 TaskGroup group = new TaskGroup(); 1865 group.taskId = task.taskId; 1866 mValidateAppTokens.add(group); 1867 final int numActivities = activities.size(); 1868 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1869 final ActivityRecord r = activities.get(activityNdx); 1870 group.tokens.add(r.appToken); 1871 } 1872 } 1873 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 1874 } 1875 1876 /** 1877 * Perform a reset of the given task, if needed as part of launching it. 1878 * Returns the new HistoryRecord at the top of the task. 1879 */ 1880 /** 1881 * Helper method for #resetTaskIfNeededLocked. 1882 * We are inside of the task being reset... we'll either finish this activity, push it out 1883 * for another task, or leave it as-is. 1884 * @param task The task containing the Activity (taskTop) that might be reset. 1885 * @param forceReset 1886 * @return An ActivityOptions that needs to be processed. 1887 */ 1888 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 1889 ActivityOptions topOptions = null; 1890 1891 int replyChainEnd = -1; 1892 boolean canMoveOptions = true; 1893 1894 // We only do this for activities that are not the root of the task (since if we finish 1895 // the root, we may no longer have the task!). 1896 final ArrayList<ActivityRecord> activities = task.mActivities; 1897 final int numActivities = activities.size(); 1898 for (int i = numActivities - 1; i > 0; --i ) { 1899 ActivityRecord target = activities.get(i); 1900 1901 final int flags = target.info.flags; 1902 final boolean finishOnTaskLaunch = 1903 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 1904 final boolean allowTaskReparenting = 1905 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 1906 final boolean clearWhenTaskReset = 1907 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 1908 1909 if (!finishOnTaskLaunch 1910 && !clearWhenTaskReset 1911 && target.resultTo != null) { 1912 // If this activity is sending a reply to a previous 1913 // activity, we can't do anything with it now until 1914 // we reach the start of the reply chain. 1915 // XXX note that we are assuming the result is always 1916 // to the previous activity, which is almost always 1917 // the case but we really shouldn't count on. 1918 if (replyChainEnd < 0) { 1919 replyChainEnd = i; 1920 } 1921 } else if (!finishOnTaskLaunch 1922 && !clearWhenTaskReset 1923 && allowTaskReparenting 1924 && target.taskAffinity != null 1925 && !target.taskAffinity.equals(task.affinity)) { 1926 // If this activity has an affinity for another 1927 // task, then we need to move it out of here. We will 1928 // move it as far out of the way as possible, to the 1929 // bottom of the activity stack. This also keeps it 1930 // correctly ordered with any activities we previously 1931 // moved. 1932 final ThumbnailHolder newThumbHolder; 1933 final TaskRecord targetTask; 1934 final ActivityRecord bottom = 1935 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 1936 mTaskHistory.get(0).mActivities.get(0) : null; 1937 if (bottom != null && target.taskAffinity != null 1938 && target.taskAffinity.equals(bottom.task.affinity)) { 1939 // If the activity currently at the bottom has the 1940 // same task affinity as the one we are moving, 1941 // then merge it into the same task. 1942 targetTask = bottom.task; 1943 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 1944 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 1945 + " out to bottom task " + bottom.task); 1946 } else { 1947 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 1948 null, false); 1949 newThumbHolder = targetTask; 1950 targetTask.affinityIntent = target.intent; 1951 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 1952 + " out to new task " + target.task); 1953 } 1954 1955 if (clearWhenTaskReset) { 1956 // This is the start of a new sub-task. 1957 if (target.thumbHolder == null) { 1958 target.thumbHolder = new ThumbnailHolder(); 1959 } 1960 } else { 1961 target.thumbHolder = newThumbHolder; 1962 } 1963 1964 final int targetTaskId = targetTask.taskId; 1965 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 1966 1967 boolean noOptions = canMoveOptions; 1968 final int start = replyChainEnd < 0 ? i : replyChainEnd; 1969 for (int srcPos = start; srcPos >= i; --srcPos) { 1970 final ActivityRecord p = activities.get(srcPos); 1971 if (p.finishing) { 1972 continue; 1973 } 1974 1975 ThumbnailHolder curThumbHolder = p.thumbHolder; 1976 canMoveOptions = false; 1977 if (noOptions && topOptions == null) { 1978 topOptions = p.takeOptionsLocked(); 1979 if (topOptions != null) { 1980 noOptions = false; 1981 } 1982 } 1983 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 1984 + task + " adding to task=" + targetTask 1985 + " Callers=" + Debug.getCallers(4)); 1986 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 1987 + " out to target's task " + target.task); 1988 p.setTask(targetTask, curThumbHolder, false); 1989 targetTask.addActivityAtBottom(p); 1990 1991 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 1992 } 1993 1994 mWindowManager.moveTaskToBottom(targetTaskId); 1995 if (VALIDATE_TOKENS) { 1996 validateAppTokensLocked(); 1997 } 1998 1999 replyChainEnd = -1; 2000 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2001 // If the activity should just be removed -- either 2002 // because it asks for it, or the task should be 2003 // cleared -- then finish it and anything that is 2004 // part of its reply chain. 2005 int end; 2006 if (clearWhenTaskReset) { 2007 // In this case, we want to finish this activity 2008 // and everything above it, so be sneaky and pretend 2009 // like these are all in the reply chain. 2010 end = numActivities - 1; 2011 } else if (replyChainEnd < 0) { 2012 end = i; 2013 } else { 2014 end = replyChainEnd; 2015 } 2016 boolean noOptions = canMoveOptions; 2017 for (int srcPos = i; srcPos <= end; srcPos++) { 2018 ActivityRecord p = activities.get(srcPos); 2019 if (p.finishing) { 2020 continue; 2021 } 2022 canMoveOptions = false; 2023 if (noOptions && topOptions == null) { 2024 topOptions = p.takeOptionsLocked(); 2025 if (topOptions != null) { 2026 noOptions = false; 2027 } 2028 } 2029 if (DEBUG_TASKS) Slog.w(TAG, 2030 "resetTaskIntendedTask: calling finishActivity on " + p); 2031 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2032 end--; 2033 srcPos--; 2034 } 2035 } 2036 replyChainEnd = -1; 2037 } else { 2038 // If we were in the middle of a chain, well the 2039 // activity that started it all doesn't want anything 2040 // special, so leave it all as-is. 2041 replyChainEnd = -1; 2042 } 2043 } 2044 2045 return topOptions; 2046 } 2047 2048 /** 2049 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2050 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2051 * @param affinityTask The task we are looking for an affinity to. 2052 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2053 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2054 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2055 */ 2056 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2057 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2058 int replyChainEnd = -1; 2059 final int taskId = task.taskId; 2060 final String taskAffinity = task.affinity; 2061 2062 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2063 final int numActivities = activities.size(); 2064 // Do not operate on the root Activity. 2065 for (int i = numActivities - 1; i > 0; --i) { 2066 ActivityRecord target = activities.get(i); 2067 2068 final int flags = target.info.flags; 2069 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2070 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2071 2072 if (target.resultTo != null) { 2073 // If this activity is sending a reply to a previous 2074 // activity, we can't do anything with it now until 2075 // we reach the start of the reply chain. 2076 // XXX note that we are assuming the result is always 2077 // to the previous activity, which is almost always 2078 // the case but we really shouldn't count on. 2079 if (replyChainEnd < 0) { 2080 replyChainEnd = i; 2081 } 2082 } else if (topTaskIsHigher 2083 && allowTaskReparenting 2084 && taskAffinity != null 2085 && taskAffinity.equals(target.taskAffinity)) { 2086 // This activity has an affinity for our task. Either remove it if we are 2087 // clearing or move it over to our task. Note that 2088 // we currently punt on the case where we are resetting a 2089 // task that is not at the top but who has activities above 2090 // with an affinity to it... this is really not a normal 2091 // case, and we will need to later pull that task to the front 2092 // and usually at that point we will do the reset and pick 2093 // up those remaining activities. (This only happens if 2094 // someone starts an activity in a new task from an activity 2095 // in a task that is not currently on top.) 2096 if (forceReset || finishOnTaskLaunch) { 2097 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2098 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2099 for (int srcPos = start; srcPos >= i; --srcPos) { 2100 final ActivityRecord p = activities.get(srcPos); 2101 if (p.finishing) { 2102 continue; 2103 } 2104 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2105 } 2106 } else { 2107 if (taskInsertionPoint < 0) { 2108 taskInsertionPoint = task.mActivities.size(); 2109 2110 } 2111 2112 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2113 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2114 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2115 for (int srcPos = start; srcPos >= i; --srcPos) { 2116 final ActivityRecord p = activities.get(srcPos); 2117 p.setTask(task, null, false); 2118 task.addActivityAtIndex(taskInsertionPoint, p); 2119 2120 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2121 + " to stack at " + task, 2122 new RuntimeException("here").fillInStackTrace()); 2123 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2124 + " in to resetting task " + task); 2125 mWindowManager.setAppGroupId(p.appToken, taskId); 2126 } 2127 mWindowManager.moveTaskToTop(taskId); 2128 if (VALIDATE_TOKENS) { 2129 validateAppTokensLocked(); 2130 } 2131 2132 // Now we've moved it in to place... but what if this is 2133 // a singleTop activity and we have put it on top of another 2134 // instance of the same activity? Then we drop the instance 2135 // below so it remains singleTop. 2136 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2137 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2138 int targetNdx = taskActivities.indexOf(target); 2139 if (targetNdx > 0) { 2140 ActivityRecord p = taskActivities.get(targetNdx - 1); 2141 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2142 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2143 false); 2144 } 2145 } 2146 } 2147 } 2148 2149 replyChainEnd = -1; 2150 } 2151 } 2152 return taskInsertionPoint; 2153 } 2154 2155 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2156 ActivityRecord newActivity) { 2157 boolean forceReset = 2158 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2159 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2160 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2161 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2162 forceReset = true; 2163 } 2164 } 2165 2166 final TaskRecord task = taskTop.task; 2167 2168 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2169 * for remaining tasks. Used for later tasks to reparent to task. */ 2170 boolean taskFound = false; 2171 2172 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2173 ActivityOptions topOptions = null; 2174 2175 // Preserve the location for reparenting in the new task. 2176 int reparentInsertionPoint = -1; 2177 2178 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2179 final TaskRecord targetTask = mTaskHistory.get(i); 2180 2181 if (targetTask == task) { 2182 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2183 taskFound = true; 2184 } else { 2185 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2186 taskFound, forceReset, reparentInsertionPoint); 2187 } 2188 } 2189 2190 int taskNdx = mTaskHistory.indexOf(task); 2191 do { 2192 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2193 } while (taskTop == null && taskNdx >= 0); 2194 2195 if (topOptions != null) { 2196 // If we got some ActivityOptions from an activity on top that 2197 // was removed from the task, propagate them to the new real top. 2198 if (taskTop != null) { 2199 taskTop.updateOptionsLocked(topOptions); 2200 } else { 2201 topOptions.abort(); 2202 } 2203 } 2204 2205 return taskTop; 2206 } 2207 2208 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2209 String resultWho, int requestCode, int resultCode, Intent data) { 2210 2211 if (callingUid > 0) { 2212 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2213 data, r.getUriPermissionsLocked()); 2214 } 2215 2216 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2217 + " : who=" + resultWho + " req=" + requestCode 2218 + " res=" + resultCode + " data=" + data); 2219 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2220 try { 2221 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2222 list.add(new ResultInfo(resultWho, requestCode, 2223 resultCode, data)); 2224 r.app.thread.scheduleSendResult(r.appToken, list); 2225 return; 2226 } catch (Exception e) { 2227 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2228 } 2229 } 2230 2231 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2232 } 2233 2234 private void adjustFocusedActivityLocked(ActivityRecord r) { 2235 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2236 ActivityRecord next = topRunningActivityLocked(null); 2237 if (next != r) { 2238 final TaskRecord task = r.task; 2239 if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) { 2240 mStackSupervisor.moveHomeToTop(); 2241 } 2242 } 2243 mService.setFocusedActivityLocked(mStackSupervisor.topRunningActivityLocked()); 2244 } 2245 } 2246 2247 final void stopActivityLocked(ActivityRecord r) { 2248 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2249 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2250 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2251 if (!r.finishing) { 2252 if (!mService.mSleeping) { 2253 if (DEBUG_STATES) { 2254 Slog.d(TAG, "no-history finish of " + r); 2255 } 2256 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2257 "no-history", false); 2258 } else { 2259 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2260 + " on stop because we're just sleeping"); 2261 } 2262 } 2263 } 2264 2265 if (r.app != null && r.app.thread != null) { 2266 adjustFocusedActivityLocked(r); 2267 r.resumeKeyDispatchingLocked(); 2268 try { 2269 r.stopped = false; 2270 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2271 + " (stop requested)"); 2272 r.state = ActivityState.STOPPING; 2273 if (DEBUG_VISBILITY) Slog.v( 2274 TAG, "Stopping visible=" + r.visible + " for " + r); 2275 if (!r.visible) { 2276 mWindowManager.setAppVisibility(r.appToken, false); 2277 } 2278 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2279 if (mService.isSleepingOrShuttingDown()) { 2280 r.setSleeping(true); 2281 } 2282 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2283 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2284 } catch (Exception e) { 2285 // Maybe just ignore exceptions here... if the process 2286 // has crashed, our death notification will clean things 2287 // up. 2288 Slog.w(TAG, "Exception thrown during pause", e); 2289 // Just in case, assume it to be stopped. 2290 r.stopped = true; 2291 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2292 r.state = ActivityState.STOPPED; 2293 if (r.configDestroy) { 2294 destroyActivityLocked(r, true, false, "stop-except"); 2295 } 2296 } 2297 } 2298 } 2299 2300 /** 2301 * @return Returns true if the activity is being finished, false if for 2302 * some reason it is being left as-is. 2303 */ 2304 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2305 Intent resultData, String reason, boolean oomAdj) { 2306 ActivityRecord r = isInStackLocked(token); 2307 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2308 TAG, "Finishing activity token=" + token + " r=" 2309 + ", result=" + resultCode + ", data=" + resultData 2310 + ", reason=" + reason); 2311 if (r == null) { 2312 return false; 2313 } 2314 2315 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2316 return true; 2317 } 2318 2319 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2320 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2321 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2322 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2323 ActivityRecord r = activities.get(activityNdx); 2324 if (r.resultTo == self && r.requestCode == requestCode) { 2325 if ((r.resultWho == null && resultWho == null) || 2326 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2327 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2328 false); 2329 } 2330 } 2331 } 2332 } 2333 mService.updateOomAdjLocked(); 2334 } 2335 2336 final void finishTopRunningActivityLocked(ProcessRecord app) { 2337 ActivityRecord r = topRunningActivityLocked(null); 2338 if (r != null && r.app == app) { 2339 // If the top running activity is from this crashing 2340 // process, then terminate it to avoid getting in a loop. 2341 Slog.w(TAG, " Force finishing activity " 2342 + r.intent.getComponent().flattenToShortString()); 2343 int taskNdx = mTaskHistory.indexOf(r.task); 2344 int activityNdx = r.task.mActivities.indexOf(r); 2345 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2346 // Also terminate any activities below it that aren't yet 2347 // stopped, to avoid a situation where one will get 2348 // re-start our crashing activity once it gets resumed again. 2349 --activityNdx; 2350 if (activityNdx < 0) { 2351 do { 2352 --taskNdx; 2353 if (taskNdx < 0) { 2354 break; 2355 } 2356 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2357 } while (activityNdx < 0); 2358 } 2359 if (activityNdx >= 0) { 2360 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2361 if (r.state == ActivityState.RESUMED 2362 || r.state == ActivityState.PAUSING 2363 || r.state == ActivityState.PAUSED) { 2364 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2365 Slog.w(TAG, " Force finishing activity " 2366 + r.intent.getComponent().flattenToShortString()); 2367 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2368 } 2369 } 2370 } 2371 } 2372 } 2373 2374 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2375 ArrayList<ActivityRecord> activities = r.task.mActivities; 2376 for (int index = activities.indexOf(r); index >= 0; --index) { 2377 ActivityRecord cur = activities.get(index); 2378 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2379 break; 2380 } 2381 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2382 } 2383 return true; 2384 } 2385 2386 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2387 // send the result 2388 ActivityRecord resultTo = r.resultTo; 2389 if (resultTo != null) { 2390 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2391 + " who=" + r.resultWho + " req=" + r.requestCode 2392 + " res=" + resultCode + " data=" + resultData); 2393 if (r.info.applicationInfo.uid > 0) { 2394 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2395 resultTo.packageName, resultData, 2396 resultTo.getUriPermissionsLocked()); 2397 } 2398 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2399 resultData); 2400 r.resultTo = null; 2401 } 2402 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2403 2404 // Make sure this HistoryRecord is not holding on to other resources, 2405 // because clients have remote IPC references to this object so we 2406 // can't assume that will go away and want to avoid circular IPC refs. 2407 r.results = null; 2408 r.pendingResults = null; 2409 r.newIntents = null; 2410 r.icicle = null; 2411 } 2412 2413 /** 2414 * @return Returns true if this activity has been removed from the history 2415 * list, or false if it is still in the list and will be removed later. 2416 */ 2417 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2418 String reason, boolean oomAdj) { 2419 if (r.finishing) { 2420 Slog.w(TAG, "Duplicate finish request for " + r); 2421 return false; 2422 } 2423 2424 r.makeFinishing(); 2425 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2426 r.userId, System.identityHashCode(r), 2427 r.task.taskId, r.shortComponentName, reason); 2428 final ArrayList<ActivityRecord> activities = r.task.mActivities; 2429 final int index = activities.indexOf(r); 2430 if (index < (activities.size() - 1)) { 2431 r.task.setFrontOfTask(); 2432 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2433 // If the caller asked that this activity (and all above it) 2434 // be cleared when the task is reset, don't lose that information, 2435 // but propagate it up to the next activity. 2436 ActivityRecord next = activities.get(index+1); 2437 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2438 } 2439 } 2440 2441 r.pauseKeyDispatchingLocked(); 2442 2443 adjustFocusedActivityLocked(r); 2444 2445 finishActivityResultsLocked(r, resultCode, resultData); 2446 2447 if (!mService.mPendingThumbnails.isEmpty()) { 2448 // There are clients waiting to receive thumbnails so, in case 2449 // this is an activity that someone is waiting for, add it 2450 // to the pending list so we can correctly update the clients. 2451 mStackSupervisor.mCancelledThumbnails.add(r); 2452 } 2453 2454 if (mResumedActivity == r) { 2455 boolean endTask = index <= 0; 2456 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2457 "Prepare close transition: finishing " + r); 2458 mWindowManager.prepareAppTransition(endTask 2459 ? AppTransition.TRANSIT_TASK_CLOSE 2460 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2461 2462 // Tell window manager to prepare for this one to be removed. 2463 mWindowManager.setAppVisibility(r.appToken, false); 2464 2465 if (mPausingActivity == null) { 2466 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2467 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2468 startPausingLocked(false, false); 2469 } 2470 2471 } else if (r.state != ActivityState.PAUSING) { 2472 // If the activity is PAUSING, we will complete the finish once 2473 // it is done pausing; else we can just directly finish it here. 2474 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2475 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2476 } else { 2477 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2478 } 2479 2480 return false; 2481 } 2482 2483 static final int FINISH_IMMEDIATELY = 0; 2484 static final int FINISH_AFTER_PAUSE = 1; 2485 static final int FINISH_AFTER_VISIBLE = 2; 2486 2487 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2488 // First things first: if this activity is currently visible, 2489 // and the resumed activity is not yet visible, then hold off on 2490 // finishing until the resumed one becomes visible. 2491 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2492 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2493 mStackSupervisor.mStoppingActivities.add(r); 2494 if (mStackSupervisor.mStoppingActivities.size() > 3 2495 || r.frontOfTask && mTaskHistory.size() <= 1) { 2496 // If we already have a few activities waiting to stop, 2497 // then give up on things going idle and start clearing 2498 // them out. Or if r is the last of activity of the last task the stack 2499 // will be empty and must be cleared immediately. 2500 mStackSupervisor.scheduleIdleLocked(); 2501 } else { 2502 mStackSupervisor.checkReadyForSleepLocked(); 2503 } 2504 } 2505 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2506 + " (finish requested)"); 2507 r.state = ActivityState.STOPPING; 2508 if (oomAdj) { 2509 mService.updateOomAdjLocked(); 2510 } 2511 return r; 2512 } 2513 2514 // make sure the record is cleaned out of other places. 2515 mStackSupervisor.mStoppingActivities.remove(r); 2516 mStackSupervisor.mGoingToSleepActivities.remove(r); 2517 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2518 if (mResumedActivity == r) { 2519 mResumedActivity = null; 2520 } 2521 final ActivityState prevState = r.state; 2522 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2523 r.state = ActivityState.FINISHING; 2524 2525 if (mode == FINISH_IMMEDIATELY 2526 || prevState == ActivityState.STOPPED 2527 || prevState == ActivityState.INITIALIZING) { 2528 // If this activity is already stopped, we can just finish 2529 // it right now. 2530 boolean activityRemoved = destroyActivityLocked(r, true, 2531 oomAdj, "finish-imm"); 2532 if (activityRemoved) { 2533 mStackSupervisor.resumeTopActivitiesLocked(); 2534 } 2535 return activityRemoved ? null : r; 2536 } 2537 2538 // Need to go through the full pause cycle to get this 2539 // activity into the stopped state and then finish it. 2540 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2541 mStackSupervisor.mFinishingActivities.add(r); 2542 r.resumeKeyDispatchingLocked(); 2543 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2544 return r; 2545 } 2546 2547 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2548 Intent resultData) { 2549 final ActivityRecord srec = ActivityRecord.forToken(token); 2550 final TaskRecord task = srec.task; 2551 final ArrayList<ActivityRecord> activities = task.mActivities; 2552 final int start = activities.indexOf(srec); 2553 if (!mTaskHistory.contains(task) || (start < 0)) { 2554 return false; 2555 } 2556 int finishTo = start - 1; 2557 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2558 boolean foundParentInTask = false; 2559 final ComponentName dest = destIntent.getComponent(); 2560 if (start > 0 && dest != null) { 2561 for (int i = finishTo; i >= 0; i--) { 2562 ActivityRecord r = activities.get(i); 2563 if (r.info.packageName.equals(dest.getPackageName()) && 2564 r.info.name.equals(dest.getClassName())) { 2565 finishTo = i; 2566 parent = r; 2567 foundParentInTask = true; 2568 break; 2569 } 2570 } 2571 } 2572 2573 IActivityController controller = mService.mController; 2574 if (controller != null) { 2575 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2576 if (next != null) { 2577 // ask watcher if this is allowed 2578 boolean resumeOK = true; 2579 try { 2580 resumeOK = controller.activityResuming(next.packageName); 2581 } catch (RemoteException e) { 2582 mService.mController = null; 2583 Watchdog.getInstance().setActivityController(null); 2584 } 2585 2586 if (!resumeOK) { 2587 return false; 2588 } 2589 } 2590 } 2591 final long origId = Binder.clearCallingIdentity(); 2592 for (int i = start; i > finishTo; i--) { 2593 ActivityRecord r = activities.get(i); 2594 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2595 // Only return the supplied result for the first activity finished 2596 resultCode = Activity.RESULT_CANCELED; 2597 resultData = null; 2598 } 2599 2600 if (parent != null && foundParentInTask) { 2601 final int parentLaunchMode = parent.info.launchMode; 2602 final int destIntentFlags = destIntent.getFlags(); 2603 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2604 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2605 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2606 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2607 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2608 } else { 2609 try { 2610 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2611 destIntent.getComponent(), 0, srec.userId); 2612 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2613 null, aInfo, parent.appToken, null, 2614 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2615 0, null, true, null, null); 2616 foundParentInTask = res == ActivityManager.START_SUCCESS; 2617 } catch (RemoteException e) { 2618 foundParentInTask = false; 2619 } 2620 requestFinishActivityLocked(parent.appToken, resultCode, 2621 resultData, "navigate-up", true); 2622 } 2623 } 2624 Binder.restoreCallingIdentity(origId); 2625 return foundParentInTask; 2626 } 2627 /** 2628 * Perform the common clean-up of an activity record. This is called both 2629 * as part of destroyActivityLocked() (when destroying the client-side 2630 * representation) and cleaning things up as a result of its hosting 2631 * processing going away, in which case there is no remaining client-side 2632 * state to destroy so only the cleanup here is needed. 2633 */ 2634 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2635 boolean setState) { 2636 if (mResumedActivity == r) { 2637 mResumedActivity = null; 2638 } 2639 if (mService.mFocusedActivity == r) { 2640 mService.mFocusedActivity = null; 2641 } 2642 2643 r.configDestroy = false; 2644 r.frozenBeforeDestroy = false; 2645 2646 if (setState) { 2647 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2648 r.state = ActivityState.DESTROYED; 2649 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2650 r.app = null; 2651 } 2652 2653 // Make sure this record is no longer in the pending finishes list. 2654 // This could happen, for example, if we are trimming activities 2655 // down to the max limit while they are still waiting to finish. 2656 mStackSupervisor.mFinishingActivities.remove(r); 2657 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2658 2659 // Remove any pending results. 2660 if (r.finishing && r.pendingResults != null) { 2661 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2662 PendingIntentRecord rec = apr.get(); 2663 if (rec != null) { 2664 mService.cancelIntentSenderLocked(rec, false); 2665 } 2666 } 2667 r.pendingResults = null; 2668 } 2669 2670 if (cleanServices) { 2671 cleanUpActivityServicesLocked(r); 2672 } 2673 2674 if (!mService.mPendingThumbnails.isEmpty()) { 2675 // There are clients waiting to receive thumbnails so, in case 2676 // this is an activity that someone is waiting for, add it 2677 // to the pending list so we can correctly update the clients. 2678 mStackSupervisor.mCancelledThumbnails.add(r); 2679 } 2680 2681 // Get rid of any pending idle timeouts. 2682 removeTimeoutsForActivityLocked(r); 2683 } 2684 2685 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2686 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2687 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2688 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2689 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2690 r.finishLaunchTickingLocked(); 2691 } 2692 2693 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2694 mStackSupervisor.removeChildActivityContainers(r); 2695 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2696 r.makeFinishing(); 2697 if (DEBUG_ADD_REMOVE) { 2698 RuntimeException here = new RuntimeException("here"); 2699 here.fillInStackTrace(); 2700 Slog.i(TAG, "Removing activity " + r + " from stack"); 2701 } 2702 r.takeFromHistory(); 2703 removeTimeoutsForActivityLocked(r); 2704 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2705 r.state = ActivityState.DESTROYED; 2706 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2707 r.app = null; 2708 mWindowManager.removeAppToken(r.appToken); 2709 if (VALIDATE_TOKENS) { 2710 validateAppTokensLocked(); 2711 } 2712 final TaskRecord task = r.task; 2713 if (task != null && task.removeActivity(r)) { 2714 if (DEBUG_STACK) Slog.i(TAG, 2715 "removeActivityFromHistoryLocked: last activity removed from " + this); 2716 if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) { 2717 mStackSupervisor.moveHomeToTop(); 2718 } 2719 removeTask(task); 2720 } 2721 cleanUpActivityServicesLocked(r); 2722 r.removeUriPermissionsLocked(); 2723 } 2724 2725 /** 2726 * Perform clean-up of service connections in an activity record. 2727 */ 2728 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2729 // Throw away any services that have been bound by this activity. 2730 if (r.connections != null) { 2731 Iterator<ConnectionRecord> it = r.connections.iterator(); 2732 while (it.hasNext()) { 2733 ConnectionRecord c = it.next(); 2734 mService.mServices.removeConnectionLocked(c, null, r); 2735 } 2736 r.connections = null; 2737 } 2738 } 2739 2740 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2741 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2742 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2743 mHandler.sendMessage(msg); 2744 } 2745 2746 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2747 boolean lastIsOpaque = false; 2748 boolean activityRemoved = false; 2749 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2750 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2751 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2752 final ActivityRecord r = activities.get(activityNdx); 2753 if (r.finishing) { 2754 continue; 2755 } 2756 if (r.fullscreen) { 2757 lastIsOpaque = true; 2758 } 2759 if (owner != null && r.app != owner) { 2760 continue; 2761 } 2762 if (!lastIsOpaque) { 2763 continue; 2764 } 2765 // We can destroy this one if we have its icicle saved and 2766 // it is not in the process of pausing/stopping/finishing. 2767 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2768 && r.haveState && !r.visible && r.stopped 2769 && r.state != ActivityState.DESTROYING 2770 && r.state != ActivityState.DESTROYED) { 2771 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2772 + " resumed=" + mResumedActivity 2773 + " pausing=" + mPausingActivity); 2774 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2775 activityRemoved = true; 2776 } 2777 } 2778 } 2779 } 2780 if (activityRemoved) { 2781 mStackSupervisor.resumeTopActivitiesLocked(); 2782 2783 } 2784 } 2785 2786 /** 2787 * Destroy the current CLIENT SIDE instance of an activity. This may be 2788 * called both when actually finishing an activity, or when performing 2789 * a configuration switch where we destroy the current client-side object 2790 * but then create a new client-side object for this same HistoryRecord. 2791 */ 2792 final boolean destroyActivityLocked(ActivityRecord r, 2793 boolean removeFromApp, boolean oomAdj, String reason) { 2794 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2795 TAG, "Removing activity from " + reason + ": token=" + r 2796 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2797 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2798 r.userId, System.identityHashCode(r), 2799 r.task.taskId, r.shortComponentName, reason); 2800 2801 boolean removedFromHistory = false; 2802 2803 cleanUpActivityLocked(r, false, false); 2804 2805 final boolean hadApp = r.app != null; 2806 2807 if (hadApp) { 2808 if (removeFromApp) { 2809 r.app.activities.remove(r); 2810 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2811 mService.mHeavyWeightProcess = null; 2812 mService.mHandler.sendEmptyMessage( 2813 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2814 } 2815 if (r.app.activities.isEmpty()) { 2816 // No longer have activities, so update LRU list and oom adj. 2817 mService.updateLruProcessLocked(r.app, false, null); 2818 mService.updateOomAdjLocked(); 2819 } 2820 } 2821 2822 boolean skipDestroy = false; 2823 2824 try { 2825 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2826 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2827 r.configChangeFlags); 2828 } catch (Exception e) { 2829 // We can just ignore exceptions here... if the process 2830 // has crashed, our death notification will clean things 2831 // up. 2832 //Slog.w(TAG, "Exception thrown during finish", e); 2833 if (r.finishing) { 2834 removeActivityFromHistoryLocked(r); 2835 removedFromHistory = true; 2836 skipDestroy = true; 2837 } 2838 } 2839 2840 r.nowVisible = false; 2841 2842 // If the activity is finishing, we need to wait on removing it 2843 // from the list to give it a chance to do its cleanup. During 2844 // that time it may make calls back with its token so we need to 2845 // be able to find it on the list and so we don't want to remove 2846 // it from the list yet. Otherwise, we can just immediately put 2847 // it in the destroyed state since we are not removing it from the 2848 // list. 2849 if (r.finishing && !skipDestroy) { 2850 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2851 + " (destroy requested)"); 2852 r.state = ActivityState.DESTROYING; 2853 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2854 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2855 } else { 2856 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 2857 r.state = ActivityState.DESTROYED; 2858 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2859 r.app = null; 2860 } 2861 } else { 2862 // remove this record from the history. 2863 if (r.finishing) { 2864 removeActivityFromHistoryLocked(r); 2865 removedFromHistory = true; 2866 } else { 2867 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 2868 r.state = ActivityState.DESTROYED; 2869 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2870 r.app = null; 2871 } 2872 } 2873 2874 r.configChangeFlags = 0; 2875 2876 if (!mLRUActivities.remove(r) && hadApp) { 2877 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 2878 } 2879 2880 return removedFromHistory; 2881 } 2882 2883 final void activityDestroyedLocked(IBinder token) { 2884 final long origId = Binder.clearCallingIdentity(); 2885 try { 2886 ActivityRecord r = ActivityRecord.forToken(token); 2887 if (r != null) { 2888 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2889 } 2890 2891 if (isInStackLocked(token) != null) { 2892 if (r.state == ActivityState.DESTROYING) { 2893 cleanUpActivityLocked(r, true, false); 2894 removeActivityFromHistoryLocked(r); 2895 } 2896 } 2897 mStackSupervisor.resumeTopActivitiesLocked(); 2898 } finally { 2899 Binder.restoreCallingIdentity(origId); 2900 } 2901 } 2902 2903 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 2904 ProcessRecord app, String listName) { 2905 int i = list.size(); 2906 if (DEBUG_CLEANUP) Slog.v( 2907 TAG, "Removing app " + app + " from list " + listName 2908 + " with " + i + " entries"); 2909 while (i > 0) { 2910 i--; 2911 ActivityRecord r = list.get(i); 2912 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 2913 if (r.app == app) { 2914 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 2915 list.remove(i); 2916 removeTimeoutsForActivityLocked(r); 2917 } 2918 } 2919 } 2920 2921 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 2922 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 2923 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 2924 "mStoppingActivities"); 2925 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 2926 "mGoingToSleepActivities"); 2927 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 2928 "mWaitingVisibleActivities"); 2929 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 2930 "mFinishingActivities"); 2931 2932 boolean hasVisibleActivities = false; 2933 2934 // Clean out the history list. 2935 int i = numActivities(); 2936 if (DEBUG_CLEANUP) Slog.v( 2937 TAG, "Removing app " + app + " from history with " + i + " entries"); 2938 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2939 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2940 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2941 final ActivityRecord r = activities.get(activityNdx); 2942 --i; 2943 if (DEBUG_CLEANUP) Slog.v( 2944 TAG, "Record #" + i + " " + r + ": app=" + r.app); 2945 if (r.app == app) { 2946 boolean remove; 2947 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 2948 // Don't currently have state for the activity, or 2949 // it is finishing -- always remove it. 2950 remove = true; 2951 } else if (r.launchCount > 2 && 2952 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 2953 // We have launched this activity too many times since it was 2954 // able to run, so give up and remove it. 2955 remove = true; 2956 } else { 2957 // The process may be gone, but the activity lives on! 2958 remove = false; 2959 } 2960 if (remove) { 2961 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 2962 RuntimeException here = new RuntimeException("here"); 2963 here.fillInStackTrace(); 2964 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 2965 + ": haveState=" + r.haveState 2966 + " stateNotNeeded=" + r.stateNotNeeded 2967 + " finishing=" + r.finishing 2968 + " state=" + r.state, here); 2969 } 2970 if (!r.finishing) { 2971 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 2972 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2973 r.userId, System.identityHashCode(r), 2974 r.task.taskId, r.shortComponentName, 2975 "proc died without state saved"); 2976 if (r.state == ActivityState.RESUMED) { 2977 mService.updateUsageStats(r, false); 2978 } 2979 } 2980 removeActivityFromHistoryLocked(r); 2981 2982 } else { 2983 // We have the current state for this activity, so 2984 // it can be restarted later when needed. 2985 if (localLOGV) Slog.v( 2986 TAG, "Keeping entry, setting app to null"); 2987 if (r.visible) { 2988 hasVisibleActivities = true; 2989 } 2990 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 2991 + r); 2992 r.app = null; 2993 r.nowVisible = false; 2994 if (!r.haveState) { 2995 if (DEBUG_SAVED_STATE) Slog.i(TAG, 2996 "App died, clearing saved state of " + r); 2997 r.icicle = null; 2998 } 2999 } 3000 3001 cleanUpActivityLocked(r, true, true); 3002 } 3003 } 3004 } 3005 3006 return hasVisibleActivities; 3007 } 3008 3009 final void updateTransitLocked(int transit, Bundle options) { 3010 if (options != null) { 3011 ActivityRecord r = topRunningActivityLocked(null); 3012 if (r != null && r.state != ActivityState.RESUMED) { 3013 r.updateOptionsLocked(options); 3014 } else { 3015 ActivityOptions.abort(options); 3016 } 3017 } 3018 mWindowManager.prepareAppTransition(transit, false); 3019 } 3020 3021 void moveHomeTaskToTop() { 3022 final int top = mTaskHistory.size() - 1; 3023 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3024 final TaskRecord task = mTaskHistory.get(taskNdx); 3025 if (task.isHomeTask()) { 3026 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task); 3027 mTaskHistory.remove(taskNdx); 3028 mTaskHistory.add(top, task); 3029 mWindowManager.moveTaskToTop(task.taskId); 3030 return; 3031 } 3032 } 3033 } 3034 3035 final boolean findTaskToMoveToFrontLocked(int taskId, int flags, Bundle options) { 3036 final TaskRecord task = taskForIdLocked(taskId); 3037 if (task != null) { 3038 if ((flags & ActivityManager.MOVE_TASK_NO_USER_ACTION) == 0) { 3039 mStackSupervisor.mUserLeaving = true; 3040 } 3041 if ((flags & ActivityManager.MOVE_TASK_WITH_HOME) != 0) { 3042 // Caller wants the home activity moved with it. To accomplish this, 3043 // we'll just indicate that this task returns to the home task. 3044 task.mOnTopOfHome = true; 3045 } 3046 moveTaskToFrontLocked(task, null, options); 3047 return true; 3048 } 3049 return false; 3050 } 3051 3052 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3053 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3054 3055 final int numTasks = mTaskHistory.size(); 3056 final int index = mTaskHistory.indexOf(tr); 3057 if (numTasks == 0 || index < 0) { 3058 // nothing to do! 3059 if (reason != null && 3060 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3061 ActivityOptions.abort(options); 3062 } else { 3063 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3064 } 3065 return; 3066 } 3067 3068 moveToFront(); 3069 3070 // Shift all activities with this task up to the top 3071 // of the stack, keeping them in the same internal order. 3072 insertTaskAtTop(tr); 3073 3074 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3075 if (reason != null && 3076 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3077 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3078 ActivityRecord r = topRunningActivityLocked(null); 3079 if (r != null) { 3080 mNoAnimActivities.add(r); 3081 } 3082 ActivityOptions.abort(options); 3083 } else { 3084 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3085 } 3086 3087 mWindowManager.moveTaskToTop(tr.taskId); 3088 3089 mStackSupervisor.resumeTopActivitiesLocked(); 3090 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3091 3092 if (VALIDATE_TOKENS) { 3093 validateAppTokensLocked(); 3094 } 3095 } 3096 3097 /** 3098 * Worker method for rearranging history stack. Implements the function of moving all 3099 * activities for a specific task (gathering them if disjoint) into a single group at the 3100 * bottom of the stack. 3101 * 3102 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3103 * to premeptively cancel the move. 3104 * 3105 * @param taskId The taskId to collect and move to the bottom. 3106 * @return Returns true if the move completed, false if not. 3107 */ 3108 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3109 Slog.i(TAG, "moveTaskToBack: " + taskId); 3110 3111 // If we have a watcher, preflight the move before committing to it. First check 3112 // for *other* available tasks, but if none are available, then try again allowing the 3113 // current task to be selected. 3114 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3115 ActivityRecord next = topRunningActivityLocked(null, taskId); 3116 if (next == null) { 3117 next = topRunningActivityLocked(null, 0); 3118 } 3119 if (next != null) { 3120 // ask watcher if this is allowed 3121 boolean moveOK = true; 3122 try { 3123 moveOK = mService.mController.activityResuming(next.packageName); 3124 } catch (RemoteException e) { 3125 mService.mController = null; 3126 Watchdog.getInstance().setActivityController(null); 3127 } 3128 if (!moveOK) { 3129 return false; 3130 } 3131 } 3132 } 3133 3134 if (DEBUG_TRANSITION) Slog.v(TAG, 3135 "Prepare to back transition: task=" + taskId); 3136 3137 final TaskRecord tr = taskForIdLocked(taskId); 3138 if (tr == null) { 3139 return false; 3140 } 3141 3142 mTaskHistory.remove(tr); 3143 mTaskHistory.add(0, tr); 3144 3145 // There is an assumption that moving a task to the back moves it behind the home activity. 3146 // We make sure here that some activity in the stack will launch home. 3147 ActivityRecord lastActivity = null; 3148 int numTasks = mTaskHistory.size(); 3149 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3150 final TaskRecord task = mTaskHistory.get(taskNdx); 3151 if (task.mOnTopOfHome) { 3152 break; 3153 } 3154 if (taskNdx == 1) { 3155 // Set the last task before tr to go to home. 3156 task.mOnTopOfHome = true; 3157 } 3158 } 3159 3160 if (reason != null && 3161 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3162 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3163 ActivityRecord r = topRunningActivityLocked(null); 3164 if (r != null) { 3165 mNoAnimActivities.add(r); 3166 } 3167 } else { 3168 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3169 } 3170 mWindowManager.moveTaskToBottom(taskId); 3171 3172 if (VALIDATE_TOKENS) { 3173 validateAppTokensLocked(); 3174 } 3175 3176 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3177 if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) { 3178 tr.mOnTopOfHome = false; 3179 return mStackSupervisor.resumeHomeActivity(null); 3180 } 3181 3182 mStackSupervisor.resumeTopActivitiesLocked(); 3183 return true; 3184 } 3185 3186 static final void logStartActivity(int tag, ActivityRecord r, 3187 TaskRecord task) { 3188 final Uri data = r.intent.getData(); 3189 final String strData = data != null ? data.toSafeString() : null; 3190 3191 EventLog.writeEvent(tag, 3192 r.userId, System.identityHashCode(r), task.taskId, 3193 r.shortComponentName, r.intent.getAction(), 3194 r.intent.getType(), strData, r.intent.getFlags()); 3195 } 3196 3197 /** 3198 * Make sure the given activity matches the current configuration. Returns 3199 * false if the activity had to be destroyed. Returns true if the 3200 * configuration is the same, or the activity will remain running as-is 3201 * for whatever reason. Ensures the HistoryRecord is updated with the 3202 * correct configuration and all other bookkeeping is handled. 3203 */ 3204 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3205 int globalChanges) { 3206 if (mConfigWillChange) { 3207 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3208 "Skipping config check (will change): " + r); 3209 return true; 3210 } 3211 3212 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3213 "Ensuring correct configuration: " + r); 3214 3215 // Short circuit: if the two configurations are the exact same 3216 // object (the common case), then there is nothing to do. 3217 Configuration newConfig = mService.mConfiguration; 3218 if (r.configuration == newConfig && !r.forceNewConfig) { 3219 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3220 "Configuration unchanged in " + r); 3221 return true; 3222 } 3223 3224 // We don't worry about activities that are finishing. 3225 if (r.finishing) { 3226 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3227 "Configuration doesn't matter in finishing " + r); 3228 r.stopFreezingScreenLocked(false); 3229 return true; 3230 } 3231 3232 // Okay we now are going to make this activity have the new config. 3233 // But then we need to figure out how it needs to deal with that. 3234 Configuration oldConfig = r.configuration; 3235 r.configuration = newConfig; 3236 3237 // Determine what has changed. May be nothing, if this is a config 3238 // that has come back from the app after going idle. In that case 3239 // we just want to leave the official config object now in the 3240 // activity and do nothing else. 3241 final int changes = oldConfig.diff(newConfig); 3242 if (changes == 0 && !r.forceNewConfig) { 3243 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3244 "Configuration no differences in " + r); 3245 return true; 3246 } 3247 3248 // If the activity isn't currently running, just leave the new 3249 // configuration and it will pick that up next time it starts. 3250 if (r.app == null || r.app.thread == null) { 3251 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3252 "Configuration doesn't matter not running " + r); 3253 r.stopFreezingScreenLocked(false); 3254 r.forceNewConfig = false; 3255 return true; 3256 } 3257 3258 // Figure out how to handle the changes between the configurations. 3259 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3260 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3261 + Integer.toHexString(changes) + ", handles=0x" 3262 + Integer.toHexString(r.info.getRealConfigChanged()) 3263 + ", newConfig=" + newConfig); 3264 } 3265 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3266 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3267 r.configChangeFlags |= changes; 3268 r.startFreezingScreenLocked(r.app, globalChanges); 3269 r.forceNewConfig = false; 3270 if (r.app == null || r.app.thread == null) { 3271 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3272 "Config is destroying non-running " + r); 3273 destroyActivityLocked(r, true, false, "config"); 3274 } else if (r.state == ActivityState.PAUSING) { 3275 // A little annoying: we are waiting for this activity to 3276 // finish pausing. Let's not do anything now, but just 3277 // flag that it needs to be restarted when done pausing. 3278 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3279 "Config is skipping already pausing " + r); 3280 r.configDestroy = true; 3281 return true; 3282 } else if (r.state == ActivityState.RESUMED) { 3283 // Try to optimize this case: the configuration is changing 3284 // and we need to restart the top, resumed activity. 3285 // Instead of doing the normal handshaking, just say 3286 // "restart!". 3287 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3288 "Config is relaunching resumed " + r); 3289 relaunchActivityLocked(r, r.configChangeFlags, true); 3290 r.configChangeFlags = 0; 3291 } else { 3292 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3293 "Config is relaunching non-resumed " + r); 3294 relaunchActivityLocked(r, r.configChangeFlags, false); 3295 r.configChangeFlags = 0; 3296 } 3297 3298 // All done... tell the caller we weren't able to keep this 3299 // activity around. 3300 return false; 3301 } 3302 3303 // Default case: the activity can handle this new configuration, so 3304 // hand it over. Note that we don't need to give it the new 3305 // configuration, since we always send configuration changes to all 3306 // process when they happen so it can just use whatever configuration 3307 // it last got. 3308 if (r.app != null && r.app.thread != null) { 3309 try { 3310 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3311 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3312 } catch (RemoteException e) { 3313 // If process died, whatever. 3314 } 3315 } 3316 r.stopFreezingScreenLocked(false); 3317 3318 return true; 3319 } 3320 3321 private boolean relaunchActivityLocked(ActivityRecord r, 3322 int changes, boolean andResume) { 3323 List<ResultInfo> results = null; 3324 List<Intent> newIntents = null; 3325 if (andResume) { 3326 results = r.results; 3327 newIntents = r.newIntents; 3328 } 3329 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3330 + " with results=" + results + " newIntents=" + newIntents 3331 + " andResume=" + andResume); 3332 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3333 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3334 r.task.taskId, r.shortComponentName); 3335 3336 r.startFreezingScreenLocked(r.app, 0); 3337 3338 mStackSupervisor.removeChildActivityContainers(r); 3339 3340 try { 3341 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3342 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3343 + r); 3344 r.forceNewConfig = false; 3345 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3346 changes, !andResume, new Configuration(mService.mConfiguration)); 3347 // Note: don't need to call pauseIfSleepingLocked() here, because 3348 // the caller will only pass in 'andResume' if this activity is 3349 // currently resumed, which implies we aren't sleeping. 3350 } catch (RemoteException e) { 3351 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3352 } 3353 3354 if (andResume) { 3355 r.results = null; 3356 r.newIntents = null; 3357 r.state = ActivityState.RESUMED; 3358 } else { 3359 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3360 r.state = ActivityState.PAUSED; 3361 } 3362 3363 return true; 3364 } 3365 3366 boolean willActivityBeVisibleLocked(IBinder token) { 3367 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3368 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3369 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3370 final ActivityRecord r = activities.get(activityNdx); 3371 if (r.appToken == token) { 3372 return true; 3373 } 3374 if (r.fullscreen && !r.finishing) { 3375 return false; 3376 } 3377 } 3378 } 3379 final ActivityRecord r = ActivityRecord.forToken(token); 3380 if (r == null) { 3381 return false; 3382 } 3383 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3384 + " would have returned true for r=" + r); 3385 return !r.finishing; 3386 } 3387 3388 void closeSystemDialogsLocked() { 3389 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3390 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3391 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3392 final ActivityRecord r = activities.get(activityNdx); 3393 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3394 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3395 } 3396 } 3397 } 3398 } 3399 3400 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3401 boolean didSomething = false; 3402 TaskRecord lastTask = null; 3403 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3404 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3405 int numActivities = activities.size(); 3406 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3407 ActivityRecord r = activities.get(activityNdx); 3408 final boolean samePackage = r.packageName.equals(name) 3409 || (name == null && r.userId == userId); 3410 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3411 && (samePackage || r.task == lastTask) 3412 && (r.app == null || evenPersistent || !r.app.persistent)) { 3413 if (!doit) { 3414 if (r.finishing) { 3415 // If this activity is just finishing, then it is not 3416 // interesting as far as something to stop. 3417 continue; 3418 } 3419 return true; 3420 } 3421 didSomething = true; 3422 Slog.i(TAG, " Force finishing activity " + r); 3423 if (samePackage) { 3424 if (r.app != null) { 3425 r.app.removed = true; 3426 } 3427 r.app = null; 3428 } 3429 lastTask = r.task; 3430 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3431 true)) { 3432 // r has been deleted from mActivities, accommodate. 3433 --numActivities; 3434 --activityNdx; 3435 } 3436 } 3437 } 3438 } 3439 return didSomething; 3440 } 3441 3442 ActivityRecord getTasksLocked(IThumbnailReceiver receiver, 3443 PendingThumbnailsRecord pending, List<RunningTaskInfo> list) { 3444 ActivityRecord topRecord = null; 3445 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3446 final TaskRecord task = mTaskHistory.get(taskNdx); 3447 ActivityRecord r = null; 3448 ActivityRecord top = null; 3449 int numActivities = 0; 3450 int numRunning = 0; 3451 final ArrayList<ActivityRecord> activities = task.mActivities; 3452 if (activities.isEmpty()) { 3453 continue; 3454 } 3455 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3456 r = activities.get(activityNdx); 3457 3458 // Initialize state for next task if needed. 3459 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3460 top = r; 3461 numActivities = numRunning = 0; 3462 } 3463 3464 // Add 'r' into the current task. 3465 numActivities++; 3466 if (r.app != null && r.app.thread != null) { 3467 numRunning++; 3468 } 3469 3470 if (localLOGV) Slog.v( 3471 TAG, r.intent.getComponent().flattenToShortString() 3472 + ": task=" + r.task); 3473 } 3474 3475 RunningTaskInfo ci = new RunningTaskInfo(); 3476 ci.id = task.taskId; 3477 ci.baseActivity = r.intent.getComponent(); 3478 ci.topActivity = top.intent.getComponent(); 3479 ci.lastActiveTime = task.lastActiveTime; 3480 3481 if (top.thumbHolder != null) { 3482 ci.description = top.thumbHolder.lastDescription; 3483 } 3484 ci.numActivities = numActivities; 3485 ci.numRunning = numRunning; 3486 //System.out.println( 3487 // "#" + maxNum + ": " + " descr=" + ci.description); 3488 if (receiver != null) { 3489 if (localLOGV) Slog.v( 3490 TAG, "State=" + top.state + "Idle=" + top.idle 3491 + " app=" + top.app 3492 + " thr=" + (top.app != null ? top.app.thread : null)); 3493 if (top.state == ActivityState.RESUMED || top.state == ActivityState.PAUSING) { 3494 if (top.idle && top.app != null && top.app.thread != null) { 3495 topRecord = top; 3496 } else { 3497 top.thumbnailNeeded = true; 3498 } 3499 } 3500 pending.pendingRecords.add(top); 3501 } 3502 list.add(ci); 3503 } 3504 return topRecord; 3505 } 3506 3507 public void unhandledBackLocked() { 3508 final int top = mTaskHistory.size() - 1; 3509 if (DEBUG_SWITCH) Slog.d( 3510 TAG, "Performing unhandledBack(): top activity at " + top); 3511 if (top >= 0) { 3512 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3513 int activityTop = activities.size() - 1; 3514 if (activityTop > 0) { 3515 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3516 "unhandled-back", true); 3517 } 3518 } 3519 } 3520 3521 /** 3522 * Reset local parameters because an app's activity died. 3523 * @param app The app of the activity that died. 3524 * @return result from removeHistoryRecordsForAppLocked. 3525 */ 3526 boolean handleAppDiedLocked(ProcessRecord app) { 3527 if (mPausingActivity != null && mPausingActivity.app == app) { 3528 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3529 "App died while pausing: " + mPausingActivity); 3530 mPausingActivity = null; 3531 } 3532 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3533 mLastPausedActivity = null; 3534 mLastNoHistoryActivity = null; 3535 } 3536 3537 return removeHistoryRecordsForAppLocked(app); 3538 } 3539 3540 void handleAppCrashLocked(ProcessRecord app) { 3541 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3542 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3543 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3544 final ActivityRecord r = activities.get(activityNdx); 3545 if (r.app == app) { 3546 Slog.w(TAG, " Force finishing activity " 3547 + r.intent.getComponent().flattenToShortString()); 3548 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3549 } 3550 } 3551 } 3552 } 3553 3554 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3555 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3556 boolean printed = false; 3557 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3558 final TaskRecord task = mTaskHistory.get(taskNdx); 3559 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3560 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3561 dumpClient, dumpPackage, needSep, header, 3562 " Task id #" + task.taskId); 3563 if (printed) { 3564 header = null; 3565 } 3566 } 3567 return printed; 3568 } 3569 3570 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3571 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3572 3573 if ("all".equals(name)) { 3574 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3575 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3576 } 3577 } else if ("top".equals(name)) { 3578 final int top = mTaskHistory.size() - 1; 3579 if (top >= 0) { 3580 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3581 int listTop = list.size() - 1; 3582 if (listTop >= 0) { 3583 activities.add(list.get(listTop)); 3584 } 3585 } 3586 } else { 3587 ItemMatcher matcher = new ItemMatcher(); 3588 matcher.build(name); 3589 3590 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3591 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3592 if (matcher.match(r1, r1.intent.getComponent())) { 3593 activities.add(r1); 3594 } 3595 } 3596 } 3597 } 3598 3599 return activities; 3600 } 3601 3602 ActivityRecord restartPackage(String packageName) { 3603 ActivityRecord starting = topRunningActivityLocked(null); 3604 3605 // All activities that came from the package must be 3606 // restarted as if there was a config change. 3607 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3608 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3609 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3610 final ActivityRecord a = activities.get(activityNdx); 3611 if (a.info.packageName.equals(packageName)) { 3612 a.forceNewConfig = true; 3613 if (starting != null && a == starting && a.visible) { 3614 a.startFreezingScreenLocked(starting.app, 3615 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3616 } 3617 } 3618 } 3619 } 3620 3621 return starting; 3622 } 3623 3624 void removeTask(TaskRecord task) { 3625 mWindowManager.removeTask(task.taskId); 3626 final ActivityRecord r = mResumedActivity; 3627 if (r != null && r.task == task) { 3628 mResumedActivity = null; 3629 } 3630 3631 final int taskNdx = mTaskHistory.indexOf(task); 3632 final int topTaskNdx = mTaskHistory.size() - 1; 3633 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3634 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3635 } 3636 mTaskHistory.remove(task); 3637 3638 if (mTaskHistory.isEmpty()) { 3639 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3640 if (isOnHomeDisplay()) { 3641 mStackSupervisor.moveHomeStack(!isHomeStack()); 3642 } 3643 if (mStacks != null) { 3644 mStacks.remove(this); 3645 mStacks.add(0, this); 3646 } 3647 } 3648 } 3649 3650 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, boolean toTop) { 3651 TaskRecord task = new TaskRecord(taskId, info, intent); 3652 addTask(task, toTop); 3653 return task; 3654 } 3655 3656 ArrayList<TaskRecord> getAllTasks() { 3657 return new ArrayList<TaskRecord>(mTaskHistory); 3658 } 3659 3660 void addTask(final TaskRecord task, final boolean toTop) { 3661 task.stack = this; 3662 if (toTop) { 3663 insertTaskAtTop(task); 3664 } else { 3665 mTaskHistory.add(0, task); 3666 } 3667 } 3668 3669 public int getStackId() { 3670 return mStackId; 3671 } 3672 3673 @Override 3674 public String toString() { 3675 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3676 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3677 } 3678} 3679