ActivityStack.java revision 4a9f129874785d34930f165268dbc618e4bc2618
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_CONTAINERS; 36import static com.android.server.am.ActivityStackSupervisor.DEBUG_SAVED_STATE; 37import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 38import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 39 40import com.android.internal.os.BatteryStatsImpl; 41import com.android.server.Watchdog; 42import com.android.server.am.ActivityManagerService.ItemMatcher; 43import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 44import com.android.server.wm.AppTransition; 45import com.android.server.wm.TaskGroup; 46import com.android.server.wm.WindowManagerService; 47 48import android.app.Activity; 49import android.app.ActivityManager; 50import android.app.ActivityOptions; 51import android.app.AppGlobals; 52import android.app.IActivityController; 53import android.app.IThumbnailReceiver; 54import android.app.ResultInfo; 55import android.app.ActivityManager.RunningTaskInfo; 56import android.content.ComponentName; 57import android.content.Intent; 58import android.content.pm.ActivityInfo; 59import android.content.pm.PackageManager; 60import android.content.res.Configuration; 61import android.content.res.Resources; 62import android.graphics.Bitmap; 63import android.net.Uri; 64import android.os.Binder; 65import android.os.Bundle; 66import android.os.Debug; 67import android.os.Handler; 68import android.os.IBinder; 69import android.os.Looper; 70import android.os.Message; 71import android.os.RemoteException; 72import android.os.SystemClock; 73import android.os.Trace; 74import android.os.UserHandle; 75import android.util.EventLog; 76import android.util.Slog; 77import android.view.Display; 78 79import java.io.FileDescriptor; 80import java.io.PrintWriter; 81import java.lang.ref.WeakReference; 82import java.util.ArrayList; 83import java.util.Iterator; 84import java.util.List; 85import java.util.Objects; 86 87/** 88 * State and management of a single stack of activities. 89 */ 90final class ActivityStack { 91 92 // Ticks during which we check progress while waiting for an app to launch. 93 static final int LAUNCH_TICK = 500; 94 95 // How long we wait until giving up on the last activity to pause. This 96 // is short because it directly impacts the responsiveness of starting the 97 // next activity. 98 static final int PAUSE_TIMEOUT = 500; 99 100 // How long we wait for the activity to tell us it has stopped before 101 // giving up. This is a good amount of time because we really need this 102 // from the application in order to get its saved state. 103 static final int STOP_TIMEOUT = 10*1000; 104 105 // How long we wait until giving up on an activity telling us it has 106 // finished destroying itself. 107 static final int DESTROY_TIMEOUT = 10*1000; 108 109 // How long until we reset a task when the user returns to it. Currently 110 // disabled. 111 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 112 113 // How long between activity launches that we consider safe to not warn 114 // the user about an unexpected activity being launched on top. 115 static final long START_WARN_TIME = 5*1000; 116 117 // Set to false to disable the preview that is shown while a new activity 118 // is being started. 119 static final boolean SHOW_APP_STARTING_PREVIEW = true; 120 121 // How long to wait for all background Activities to redraw following a call to 122 // convertToTranslucent(). 123 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 124 125 static final boolean SCREENSHOT_FORCE_565 = ActivityManager 126 .isLowRamDeviceStatic() ? true : false; 127 128 enum ActivityState { 129 INITIALIZING, 130 RESUMED, 131 PAUSING, 132 PAUSED, 133 STOPPING, 134 STOPPED, 135 FINISHING, 136 DESTROYING, 137 DESTROYED 138 } 139 140 final ActivityManagerService mService; 141 final WindowManagerService mWindowManager; 142 143 /** 144 * The back history of all previous (and possibly still 145 * running) activities. It contains #TaskRecord objects. 146 */ 147 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 148 149 /** 150 * Used for validating app tokens with window manager. 151 */ 152 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 153 154 /** 155 * List of running activities, sorted by recent usage. 156 * The first entry in the list is the least recently used. 157 * It contains HistoryRecord objects. 158 */ 159 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 160 161 /** 162 * Animations that for the current transition have requested not to 163 * be considered for the transition animation. 164 */ 165 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 166 167 /** 168 * When we are in the process of pausing an activity, before starting the 169 * next one, this variable holds the activity that is currently being paused. 170 */ 171 ActivityRecord mPausingActivity = null; 172 173 /** 174 * This is the last activity that we put into the paused state. This is 175 * used to determine if we need to do an activity transition while sleeping, 176 * when we normally hold the top activity paused. 177 */ 178 ActivityRecord mLastPausedActivity = null; 179 180 /** 181 * Activities that specify No History must be removed once the user navigates away from them. 182 * If the device goes to sleep with such an activity in the paused state then we save it here 183 * and finish it later if another activity replaces it on wakeup. 184 */ 185 ActivityRecord mLastNoHistoryActivity = null; 186 187 /** 188 * Current activity that is resumed, or null if there is none. 189 */ 190 ActivityRecord mResumedActivity = null; 191 192 /** 193 * This is the last activity that has been started. It is only used to 194 * identify when multiple activities are started at once so that the user 195 * can be warned they may not be in the activity they think they are. 196 */ 197 ActivityRecord mLastStartedActivity = null; 198 199 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 200 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 201 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 202 // Activity in mTranslucentActivityWaiting is notified via 203 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 204 // background activity being drawn then the same call will be made with a true value. 205 ActivityRecord mTranslucentActivityWaiting = null; 206 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 207 new ArrayList<ActivityRecord>(); 208 209 /** 210 * Set when we know we are going to be calling updateConfiguration() 211 * soon, so want to skip intermediate config checks. 212 */ 213 boolean mConfigWillChange; 214 215 long mLaunchStartTime = 0; 216 long mFullyDrawnStartTime = 0; 217 218 /** 219 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 220 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 221 */ 222 private ActivityRecord mLastScreenshotActivity = null; 223 private Bitmap mLastScreenshotBitmap = null; 224 225 int mThumbnailWidth = -1; 226 int mThumbnailHeight = -1; 227 228 int mCurrentUser; 229 230 final int mStackId; 231 final ActivityContainer mActivityContainer; 232 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 233 ArrayList<ActivityStack> mStacks; 234 /** The attached Display's unique identifier, or -1 if detached */ 235 int mDisplayId; 236 237 /** Run all ActivityStacks through this */ 238 final ActivityStackSupervisor mStackSupervisor; 239 240 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 241 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 242 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 243 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 244 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 245 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 246 247 static class ScheduleDestroyArgs { 248 final ProcessRecord mOwner; 249 final boolean mOomAdj; 250 final String mReason; 251 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 252 mOwner = owner; 253 mOomAdj = oomAdj; 254 mReason = reason; 255 } 256 } 257 258 final Handler mHandler; 259 260 final class ActivityStackHandler extends Handler { 261 //public Handler() { 262 // if (localLOGV) Slog.v(TAG, "Handler started!"); 263 //} 264 ActivityStackHandler(Looper looper) { 265 super(looper); 266 } 267 268 @Override 269 public void handleMessage(Message msg) { 270 switch (msg.what) { 271 case PAUSE_TIMEOUT_MSG: { 272 ActivityRecord r = (ActivityRecord)msg.obj; 273 // We don't at this point know if the activity is fullscreen, 274 // so we need to be conservative and assume it isn't. 275 Slog.w(TAG, "Activity pause timeout for " + r); 276 synchronized (mService) { 277 if (r.app != null) { 278 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 279 } 280 activityPausedLocked(r.appToken, true); 281 } 282 } break; 283 case LAUNCH_TICK_MSG: { 284 ActivityRecord r = (ActivityRecord)msg.obj; 285 synchronized (mService) { 286 if (r.continueLaunchTickingLocked()) { 287 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 288 } 289 } 290 } break; 291 case DESTROY_TIMEOUT_MSG: { 292 ActivityRecord r = (ActivityRecord)msg.obj; 293 // We don't at this point know if the activity is fullscreen, 294 // so we need to be conservative and assume it isn't. 295 Slog.w(TAG, "Activity destroy timeout for " + r); 296 synchronized (mService) { 297 activityDestroyedLocked(r != null ? r.appToken : null); 298 } 299 } break; 300 case STOP_TIMEOUT_MSG: { 301 ActivityRecord r = (ActivityRecord)msg.obj; 302 // We don't at this point know if the activity is fullscreen, 303 // so we need to be conservative and assume it isn't. 304 Slog.w(TAG, "Activity stop timeout for " + r); 305 synchronized (mService) { 306 if (r.isInHistory()) { 307 activityStoppedLocked(r, null, null, null); 308 } 309 } 310 } break; 311 case DESTROY_ACTIVITIES_MSG: { 312 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 313 synchronized (mService) { 314 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 315 } 316 } break; 317 case TRANSLUCENT_TIMEOUT_MSG: { 318 synchronized (mService) { 319 notifyActivityDrawnLocked(null); 320 } 321 } break; 322 } 323 } 324 } 325 326 int numActivities() { 327 int count = 0; 328 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 329 count += mTaskHistory.get(taskNdx).mActivities.size(); 330 } 331 return count; 332 } 333 334 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 335 mActivityContainer = activityContainer; 336 mStackSupervisor = activityContainer.getOuter(); 337 mService = mStackSupervisor.mService; 338 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 339 mWindowManager = mService.mWindowManager; 340 mStackId = activityContainer.mStackId; 341 mCurrentUser = mService.mCurrentUserId; 342 } 343 344 boolean okToShow(ActivityRecord r) { 345 return r.userId == mCurrentUser 346 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 347 } 348 349 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 350 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 351 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 352 if (r != null) { 353 return r; 354 } 355 } 356 return null; 357 } 358 359 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 360 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 361 final TaskRecord task = mTaskHistory.get(taskNdx); 362 final ArrayList<ActivityRecord> activities = task.mActivities; 363 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 364 ActivityRecord r = activities.get(activityNdx); 365 if (!r.finishing && !r.delayedResume && r != notTop && okToShow(r)) { 366 return r; 367 } 368 } 369 } 370 return null; 371 } 372 373 /** 374 * This is a simplified version of topRunningActivityLocked that provides a number of 375 * optional skip-over modes. It is intended for use with the ActivityController hook only. 376 * 377 * @param token If non-null, any history records matching this token will be skipped. 378 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 379 * 380 * @return Returns the HistoryRecord of the next activity on the stack. 381 */ 382 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 383 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 384 TaskRecord task = mTaskHistory.get(taskNdx); 385 if (task.taskId == taskId) { 386 continue; 387 } 388 ArrayList<ActivityRecord> activities = task.mActivities; 389 for (int i = activities.size() - 1; i >= 0; --i) { 390 final ActivityRecord r = activities.get(i); 391 // Note: the taskId check depends on real taskId fields being non-zero 392 if (!r.finishing && (token != r.appToken) && okToShow(r)) { 393 return r; 394 } 395 } 396 } 397 return null; 398 } 399 400 final ActivityRecord topActivity() { 401 // Iterate to find the first non-empty task stack. Note that this code can 402 // be simplified once we stop storing tasks with empty mActivities lists. 403 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 404 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 405 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 406 return activities.get(activityNdx); 407 } 408 } 409 return null; 410 } 411 412 final TaskRecord topTask() { 413 final int size = mTaskHistory.size(); 414 if (size > 0) { 415 return mTaskHistory.get(size - 1); 416 } 417 return null; 418 } 419 420 TaskRecord taskForIdLocked(int id) { 421 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 422 final TaskRecord task = mTaskHistory.get(taskNdx); 423 if (task.taskId == id) { 424 return task; 425 } 426 } 427 return null; 428 } 429 430 ActivityRecord isInStackLocked(IBinder token) { 431 final ActivityRecord r = ActivityRecord.forToken(token); 432 if (r != null) { 433 final TaskRecord task = r.task; 434 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 435 if (task.stack != this) Slog.w(TAG, 436 "Illegal state! task does not point to stack it is in."); 437 return r; 438 } 439 } 440 return null; 441 } 442 443 final boolean updateLRUListLocked(ActivityRecord r) { 444 final boolean hadit = mLRUActivities.remove(r); 445 mLRUActivities.add(r); 446 return hadit; 447 } 448 449 final boolean isHomeStack() { 450 return mStackId == HOME_STACK_ID; 451 } 452 453 final boolean isOnHomeDisplay() { 454 return isAttached() && 455 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 456 } 457 458 final void moveToFront() { 459 if (isAttached()) { 460 if (isOnHomeDisplay()) { 461 mStackSupervisor.moveHomeStack(isHomeStack()); 462 } 463 mStacks.remove(this); 464 mStacks.add(this); 465 } 466 } 467 468 final boolean isAttached() { 469 return mStacks != null; 470 } 471 472 /** 473 * Returns the top activity in any existing task matching the given 474 * Intent. Returns null if no such task is found. 475 */ 476 ActivityRecord findTaskLocked(ActivityRecord target) { 477 Intent intent = target.intent; 478 ActivityInfo info = target.info; 479 ComponentName cls = intent.getComponent(); 480 if (info.targetActivity != null) { 481 cls = new ComponentName(info.packageName, info.targetActivity); 482 } 483 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 484 485 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 486 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 487 final TaskRecord task = mTaskHistory.get(taskNdx); 488 if (task.userId != userId) { 489 // Looking for a different task. 490 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 491 continue; 492 } 493 final ActivityRecord r = task.getTopActivity(); 494 if (r == null || r.finishing || r.userId != userId || 495 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 496 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 497 continue; 498 } 499 500 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 501 + r.task.intent.getComponent().flattenToShortString() 502 + "/aff=" + r.task.affinity + " to new cls=" 503 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 504 if (task.affinity != null) { 505 if (task.affinity.equals(info.taskAffinity)) { 506 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 507 return r; 508 } 509 } else if (task.intent != null && task.intent.getComponent().equals(cls)) { 510 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 511 //dump(); 512 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 513 + r.intent); 514 return r; 515 } else if (task.affinityIntent != null 516 && task.affinityIntent.getComponent().equals(cls)) { 517 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 518 //dump(); 519 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 520 + r.intent); 521 return r; 522 } else if (DEBUG_TASKS) { 523 Slog.d(TAG, "Not a match: " + task); 524 } 525 } 526 527 return null; 528 } 529 530 /** 531 * Returns the first activity (starting from the top of the stack) that 532 * is the same as the given activity. Returns null if no such activity 533 * is found. 534 */ 535 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 536 ComponentName cls = intent.getComponent(); 537 if (info.targetActivity != null) { 538 cls = new ComponentName(info.packageName, info.targetActivity); 539 } 540 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 541 542 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 543 TaskRecord task = mTaskHistory.get(taskNdx); 544 if (task.userId != mCurrentUser) { 545 return null; 546 } 547 final ArrayList<ActivityRecord> activities = task.mActivities; 548 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 549 ActivityRecord r = activities.get(activityNdx); 550 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 551 //Slog.i(TAG, "Found matching class!"); 552 //dump(); 553 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 554 return r; 555 } 556 } 557 } 558 559 return null; 560 } 561 562 /* 563 * Move the activities around in the stack to bring a user to the foreground. 564 */ 565 final void switchUserLocked(int userId) { 566 if (mCurrentUser == userId) { 567 return; 568 } 569 mCurrentUser = userId; 570 571 // Move userId's tasks to the top. 572 int index = mTaskHistory.size(); 573 for (int i = 0; i < index; ) { 574 TaskRecord task = mTaskHistory.get(i); 575 if (task.userId == userId) { 576 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 577 " moving " + task + " to top"); 578 mTaskHistory.remove(i); 579 mTaskHistory.add(task); 580 --index; 581 // Use same value for i. 582 } else { 583 ++i; 584 } 585 } 586 if (VALIDATE_TOKENS) { 587 validateAppTokensLocked(); 588 } 589 } 590 591 void minimalResumeActivityLocked(ActivityRecord r) { 592 r.state = ActivityState.RESUMED; 593 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 594 + " (starting new instance)"); 595 r.stopped = false; 596 mResumedActivity = r; 597 r.task.touchActiveTime(); 598 mService.addRecentTaskLocked(r.task); 599 completeResumeLocked(r); 600 mStackSupervisor.checkReadyForSleepLocked(); 601 setLaunchTime(r); 602 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 603 } 604 605 private void startLaunchTraces() { 606 if (mFullyDrawnStartTime != 0) { 607 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 608 } 609 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 610 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 611 } 612 613 private void stopFullyDrawnTraceIfNeeded() { 614 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 615 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 616 mFullyDrawnStartTime = 0; 617 } 618 } 619 620 void setLaunchTime(ActivityRecord r) { 621 if (r.displayStartTime == 0) { 622 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 623 if (mLaunchStartTime == 0) { 624 startLaunchTraces(); 625 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 626 } 627 } else if (mLaunchStartTime == 0) { 628 startLaunchTraces(); 629 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 630 } 631 } 632 633 void clearLaunchTime(ActivityRecord r) { 634 // Make sure that there is no activity waiting for this to launch. 635 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 636 r.displayStartTime = r.fullyDrawnStartTime = 0; 637 } else { 638 mStackSupervisor.removeTimeoutsForActivityLocked(r); 639 mStackSupervisor.scheduleIdleTimeoutLocked(r); 640 } 641 } 642 643 void awakeFromSleepingLocked() { 644 // Ensure activities are no longer sleeping. 645 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 646 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 647 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 648 activities.get(activityNdx).setSleeping(false); 649 } 650 } 651 } 652 653 /** 654 * @return true if something must be done before going to sleep. 655 */ 656 boolean checkReadyForSleepLocked() { 657 if (mResumedActivity != null) { 658 // Still have something resumed; can't sleep until it is paused. 659 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 660 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 661 startPausingLocked(false, true); 662 return true; 663 } 664 if (mPausingActivity != null) { 665 // Still waiting for something to pause; can't sleep yet. 666 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 667 return true; 668 } 669 670 return false; 671 } 672 673 void goToSleep() { 674 ensureActivitiesVisibleLocked(null, 0); 675 676 // Make sure any stopped but visible activities are now sleeping. 677 // This ensures that the activity's onStop() is called. 678 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 679 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 680 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 681 final ActivityRecord r = activities.get(activityNdx); 682 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 683 r.setSleeping(true); 684 } 685 } 686 } 687 } 688 689 public final Bitmap screenshotActivities(ActivityRecord who) { 690 if (who.noDisplay) { 691 return null; 692 } 693 694 TaskRecord tr = who.task; 695 if (mService.getMostRecentTask() != tr && tr.intent != null && 696 (tr.intent.getFlags() & Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS) != 0) { 697 // If this task is being excluded from recents, we don't want to take 698 // the expense of capturing a thumbnail, since we will never show it. 699 return null; 700 } 701 702 Resources res = mService.mContext.getResources(); 703 int w = mThumbnailWidth; 704 int h = mThumbnailHeight; 705 if (w < 0) { 706 mThumbnailWidth = w = 707 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 708 mThumbnailHeight = h = 709 res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 710 } 711 712 if (w > 0) { 713 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 714 || mLastScreenshotActivity.state == ActivityState.RESUMED 715 || mLastScreenshotBitmap.getWidth() != w 716 || mLastScreenshotBitmap.getHeight() != h) { 717 mLastScreenshotActivity = who; 718 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 719 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 720 } 721 if (mLastScreenshotBitmap != null) { 722 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 723 } 724 } 725 return null; 726 } 727 728 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 729 if (mPausingActivity != null) { 730 Slog.e(TAG, "Trying to pause when pause is already pending for " 731 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 732 } 733 ActivityRecord prev = mResumedActivity; 734 if (prev == null) { 735 Slog.e(TAG, "Trying to pause when nothing is resumed", 736 new RuntimeException("here").fillInStackTrace()); 737 mStackSupervisor.resumeTopActivitiesLocked(); 738 return; 739 } 740 741 if (mActivityContainer.mParentActivity == null) { 742 // Top level stack, not a child. Look for child stacks. 743 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 744 } 745 746 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 747 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 748 mResumedActivity = null; 749 mPausingActivity = prev; 750 mLastPausedActivity = prev; 751 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 752 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 753 prev.state = ActivityState.PAUSING; 754 prev.task.touchActiveTime(); 755 clearLaunchTime(prev); 756 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 757 if (next == null || next.task != prev.task) { 758 prev.updateThumbnail(screenshotActivities(prev), null); 759 } 760 stopFullyDrawnTraceIfNeeded(); 761 762 mService.updateCpuStats(); 763 764 if (prev.app != null && prev.app.thread != null) { 765 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 766 try { 767 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 768 prev.userId, System.identityHashCode(prev), 769 prev.shortComponentName); 770 mService.updateUsageStats(prev, false); 771 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 772 userLeaving, prev.configChangeFlags); 773 } catch (Exception e) { 774 // Ignore exception, if process died other code will cleanup. 775 Slog.w(TAG, "Exception thrown during pause", e); 776 mPausingActivity = null; 777 mLastPausedActivity = null; 778 mLastNoHistoryActivity = null; 779 } 780 } else { 781 mPausingActivity = null; 782 mLastPausedActivity = null; 783 mLastNoHistoryActivity = null; 784 } 785 786 // If we are not going to sleep, we want to ensure the device is 787 // awake until the next activity is started. 788 if (!mService.isSleepingOrShuttingDown()) { 789 mStackSupervisor.acquireLaunchWakelock(); 790 } 791 792 if (mPausingActivity != null) { 793 // Have the window manager pause its key dispatching until the new 794 // activity has started. If we're pausing the activity just because 795 // the screen is being turned off and the UI is sleeping, don't interrupt 796 // key dispatch; the same activity will pick it up again on wakeup. 797 if (!uiSleeping) { 798 prev.pauseKeyDispatchingLocked(); 799 } else { 800 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 801 } 802 803 // Schedule a pause timeout in case the app doesn't respond. 804 // We don't give it much time because this directly impacts the 805 // responsiveness seen by the user. 806 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 807 msg.obj = prev; 808 prev.pauseTime = SystemClock.uptimeMillis(); 809 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 810 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 811 } else { 812 // This activity failed to schedule the 813 // pause, so just treat it as being paused now. 814 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 815 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 816 } 817 } 818 819 final void activityPausedLocked(IBinder token, boolean timeout) { 820 if (DEBUG_PAUSE) Slog.v( 821 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 822 823 final ActivityRecord r = isInStackLocked(token); 824 if (r != null) { 825 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 826 if (mPausingActivity == r) { 827 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 828 + (timeout ? " (due to timeout)" : " (pause complete)")); 829 r.state = ActivityState.PAUSED; 830 completePauseLocked(); 831 } else { 832 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 833 r.userId, System.identityHashCode(r), r.shortComponentName, 834 mPausingActivity != null 835 ? mPausingActivity.shortComponentName : "(none)"); 836 } 837 } 838 } 839 840 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, Bitmap thumbnail, 841 CharSequence description) { 842 if (r.state != ActivityState.STOPPING) { 843 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 844 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 845 return; 846 } 847 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 848 if (icicle != null) { 849 // If icicle is null, this is happening due to a timeout, so we 850 // haven't really saved the state. 851 r.icicle = icicle; 852 r.haveState = true; 853 r.launchCount = 0; 854 r.updateThumbnail(thumbnail, description); 855 } 856 if (!r.stopped) { 857 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 858 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 859 r.stopped = true; 860 r.state = ActivityState.STOPPED; 861 if (r.finishing) { 862 r.clearOptionsLocked(); 863 } else { 864 if (r.configDestroy) { 865 destroyActivityLocked(r, true, false, "stop-config"); 866 mStackSupervisor.resumeTopActivitiesLocked(); 867 } else { 868 mStackSupervisor.updatePreviousProcessLocked(r); 869 } 870 } 871 } 872 } 873 874 private void completePauseLocked() { 875 ActivityRecord prev = mPausingActivity; 876 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 877 878 if (prev != null) { 879 if (prev.finishing) { 880 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 881 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 882 } else if (prev.app != null) { 883 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 884 if (prev.waitingVisible) { 885 prev.waitingVisible = false; 886 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 887 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 888 TAG, "Complete pause, no longer waiting: " + prev); 889 } 890 if (prev.configDestroy) { 891 // The previous is being paused because the configuration 892 // is changing, which means it is actually stopping... 893 // To juggle the fact that we are also starting a new 894 // instance right now, we need to first completely stop 895 // the current instance before starting the new one. 896 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 897 destroyActivityLocked(prev, true, false, "pause-config"); 898 } else { 899 mStackSupervisor.mStoppingActivities.add(prev); 900 if (mStackSupervisor.mStoppingActivities.size() > 3 || 901 prev.frontOfTask && mTaskHistory.size() <= 1) { 902 // If we already have a few activities waiting to stop, 903 // then give up on things going idle and start clearing 904 // them out. Or if r is the last of activity of the last task the stack 905 // will be empty and must be cleared immediately. 906 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 907 mStackSupervisor.scheduleIdleLocked(); 908 } else { 909 mStackSupervisor.checkReadyForSleepLocked(); 910 } 911 } 912 } else { 913 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 914 prev = null; 915 } 916 mPausingActivity = null; 917 } 918 919 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 920 if (!mService.isSleepingOrShuttingDown()) { 921 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 922 } else { 923 mStackSupervisor.checkReadyForSleepLocked(); 924 ActivityRecord top = topStack.topRunningActivityLocked(null); 925 if (top == null || (prev != null && top != prev)) { 926 // If there are no more activities available to run, 927 // do resume anyway to start something. Also if the top 928 // activity on the stack is not the just paused activity, 929 // we need to go ahead and resume it to ensure we complete 930 // an in-flight app switch. 931 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 932 } 933 } 934 935 if (prev != null) { 936 prev.resumeKeyDispatchingLocked(); 937 938 if (prev.app != null && prev.cpuTimeAtResume > 0 939 && mService.mBatteryStatsService.isOnBattery()) { 940 long diff; 941 synchronized (mService.mProcessCpuThread) { 942 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 943 - prev.cpuTimeAtResume; 944 } 945 if (diff > 0) { 946 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 947 synchronized (bsi) { 948 BatteryStatsImpl.Uid.Proc ps = 949 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 950 prev.info.packageName); 951 if (ps != null) { 952 ps.addForegroundTimeLocked(diff); 953 } 954 } 955 } 956 } 957 prev.cpuTimeAtResume = 0; // reset it 958 } 959 } 960 961 /** 962 * Once we know that we have asked an application to put an activity in 963 * the resumed state (either by launching it or explicitly telling it), 964 * this function updates the rest of our state to match that fact. 965 */ 966 private void completeResumeLocked(ActivityRecord next) { 967 next.idle = false; 968 next.results = null; 969 next.newIntents = null; 970 if (next.nowVisible) { 971 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 972 mStackSupervisor.dismissKeyguard(); 973 } 974 975 // schedule an idle timeout in case the app doesn't do it for us. 976 mStackSupervisor.scheduleIdleTimeoutLocked(next); 977 978 mStackSupervisor.reportResumedActivityLocked(next); 979 980 next.resumeKeyDispatchingLocked(); 981 mNoAnimActivities.clear(); 982 983 // Mark the point when the activity is resuming 984 // TODO: To be more accurate, the mark should be before the onCreate, 985 // not after the onResume. But for subsequent starts, onResume is fine. 986 if (next.app != null) { 987 synchronized (mService.mProcessCpuThread) { 988 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 989 } 990 } else { 991 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 992 } 993 } 994 995 /** 996 * Determine if home should be visible below the passed record. 997 * @param record activity we are querying for. 998 * @return true if home is visible below the passed activity, false otherwise. 999 */ 1000 boolean isActivityOverHome(ActivityRecord record) { 1001 // Start at record and go down, look for either home or a visible fullscreen activity. 1002 final TaskRecord recordTask = record.task; 1003 for (int taskNdx = mTaskHistory.indexOf(recordTask); taskNdx >= 0; --taskNdx) { 1004 TaskRecord task = mTaskHistory.get(taskNdx); 1005 final ArrayList<ActivityRecord> activities = task.mActivities; 1006 final int startNdx = 1007 task == recordTask ? activities.indexOf(record) : activities.size() - 1; 1008 for (int activityNdx = startNdx; activityNdx >= 0; --activityNdx) { 1009 final ActivityRecord r = activities.get(activityNdx); 1010 if (r.isHomeActivity()) { 1011 return true; 1012 } 1013 if (!r.finishing && r.fullscreen) { 1014 // Passed activity is over a fullscreen activity. 1015 return false; 1016 } 1017 } 1018 if (task.mOnTopOfHome) { 1019 // Got to the bottom of a task on top of home without finding a visible fullscreen 1020 // activity. Home is visible. 1021 return true; 1022 } 1023 } 1024 // Got to the bottom of this stack and still don't know. If this is over the home stack 1025 // then record is over home. May not work if we ever get more than two layers. 1026 return mStackSupervisor.isFrontStack(this); 1027 } 1028 1029 private void setVisibile(ActivityRecord r, boolean visible) { 1030 r.visible = visible; 1031 mWindowManager.setAppVisibility(r.appToken, visible); 1032 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1033 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1034 ActivityContainer container = containers.get(containerNdx); 1035 container.setVisible(visible); 1036 } 1037 } 1038 1039 /** 1040 * Version of ensureActivitiesVisible that can easily be called anywhere. 1041 */ 1042 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1043 return ensureActivitiesVisibleLocked(starting, configChanges, false); 1044 } 1045 1046 final boolean ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges, 1047 boolean forceHomeShown) { 1048 ActivityRecord r = topRunningActivityLocked(null); 1049 return r != null && 1050 ensureActivitiesVisibleLocked(r, starting, null, configChanges, forceHomeShown); 1051 } 1052 1053 /** 1054 * Make sure that all activities that need to be visible (that is, they 1055 * currently can be seen by the user) actually are. 1056 */ 1057 final boolean ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1058 String onlyThisProcess, int configChanges, boolean forceHomeShown) { 1059 if (DEBUG_VISBILITY) Slog.v( 1060 TAG, "ensureActivitiesVisible behind " + top 1061 + " configChanges=0x" + Integer.toHexString(configChanges)); 1062 1063 if (mTranslucentActivityWaiting != top) { 1064 mUndrawnActivitiesBelowTopTranslucent.clear(); 1065 if (mTranslucentActivityWaiting != null) { 1066 // Call the callback with a timeout indication. 1067 notifyActivityDrawnLocked(null); 1068 mTranslucentActivityWaiting = null; 1069 } 1070 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1071 } 1072 1073 // If the top activity is not fullscreen, then we need to 1074 // make sure any activities under it are now visible. 1075 boolean aboveTop = true; 1076 boolean showHomeBehindStack = false; 1077 boolean behindFullscreen = !mStackSupervisor.isFrontStack(this) && 1078 !(forceHomeShown && isHomeStack()); 1079 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1080 final TaskRecord task = mTaskHistory.get(taskNdx); 1081 final ArrayList<ActivityRecord> activities = task.mActivities; 1082 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1083 final ActivityRecord r = activities.get(activityNdx); 1084 if (r.finishing) { 1085 continue; 1086 } 1087 if (aboveTop && r != top) { 1088 continue; 1089 } 1090 aboveTop = false; 1091 if (!behindFullscreen) { 1092 if (DEBUG_VISBILITY) Slog.v( 1093 TAG, "Make visible? " + r + " finishing=" + r.finishing 1094 + " state=" + r.state); 1095 1096 final boolean doThisProcess = onlyThisProcess == null 1097 || onlyThisProcess.equals(r.processName); 1098 1099 // First: if this is not the current activity being started, make 1100 // sure it matches the current configuration. 1101 if (r != starting && doThisProcess) { 1102 ensureActivityConfigurationLocked(r, 0); 1103 } 1104 1105 if (r.app == null || r.app.thread == null) { 1106 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1107 // This activity needs to be visible, but isn't even 1108 // running... get it started, but don't resume it 1109 // at this point. 1110 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1111 if (r != starting) { 1112 r.startFreezingScreenLocked(r.app, configChanges); 1113 } 1114 if (!r.visible) { 1115 if (DEBUG_VISBILITY) Slog.v( 1116 TAG, "Starting and making visible: " + r); 1117 setVisibile(r, true); 1118 } 1119 if (r != starting) { 1120 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1121 } 1122 } 1123 1124 } else if (r.visible) { 1125 // If this activity is already visible, then there is nothing 1126 // else to do here. 1127 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1128 r.stopFreezingScreenLocked(false); 1129 1130 } else if (onlyThisProcess == null) { 1131 // This activity is not currently visible, but is running. 1132 // Tell it to become visible. 1133 r.visible = true; 1134 if (r.state != ActivityState.RESUMED && r != starting) { 1135 // If this activity is paused, tell it 1136 // to now show its window. 1137 if (DEBUG_VISBILITY) Slog.v( 1138 TAG, "Making visible and scheduling visibility: " + r); 1139 try { 1140 if (mTranslucentActivityWaiting != null) { 1141 mUndrawnActivitiesBelowTopTranslucent.add(r); 1142 } 1143 setVisibile(r, true); 1144 r.sleeping = false; 1145 r.app.pendingUiClean = true; 1146 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1147 r.stopFreezingScreenLocked(false); 1148 } catch (Exception e) { 1149 // Just skip on any failure; we'll make it 1150 // visible when it next restarts. 1151 Slog.w(TAG, "Exception thrown making visibile: " 1152 + r.intent.getComponent(), e); 1153 } 1154 } 1155 } 1156 1157 // Aggregate current change flags. 1158 configChanges |= r.configChangeFlags; 1159 1160 if (r.fullscreen) { 1161 // At this point, nothing else needs to be shown 1162 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1163 behindFullscreen = true; 1164 } else if (isActivityOverHome(r)) { 1165 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1166 showHomeBehindStack = true; 1167 behindFullscreen = !isHomeStack() && r.frontOfTask && task.mOnTopOfHome; 1168 } 1169 } else { 1170 if (DEBUG_VISBILITY) Slog.v( 1171 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1172 + " state=" + r.state 1173 + " behindFullscreen=" + behindFullscreen); 1174 // Now for any activities that aren't visible to the user, make 1175 // sure they no longer are keeping the screen frozen. 1176 if (r.visible) { 1177 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1178 try { 1179 setVisibile(r, false); 1180 switch (r.state) { 1181 case STOPPING: 1182 case STOPPED: 1183 if (r.app != null && r.app.thread != null) { 1184 if (DEBUG_VISBILITY) Slog.v( 1185 TAG, "Scheduling invisibility: " + r); 1186 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1187 } 1188 break; 1189 1190 case INITIALIZING: 1191 case RESUMED: 1192 case PAUSING: 1193 case PAUSED: 1194 // This case created for transitioning activities from 1195 // translucent to opaque {@link Activity#convertToOpaque}. 1196 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1197 mStackSupervisor.mStoppingActivities.add(r); 1198 } 1199 mStackSupervisor.scheduleIdleLocked(); 1200 break; 1201 1202 default: 1203 break; 1204 } 1205 } catch (Exception e) { 1206 // Just skip on any failure; we'll make it 1207 // visible when it next restarts. 1208 Slog.w(TAG, "Exception thrown making hidden: " 1209 + r.intent.getComponent(), e); 1210 } 1211 } else { 1212 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1213 } 1214 } 1215 } 1216 } 1217 return showHomeBehindStack; 1218 } 1219 1220 void convertToTranslucent(ActivityRecord r) { 1221 mTranslucentActivityWaiting = r; 1222 mUndrawnActivitiesBelowTopTranslucent.clear(); 1223 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1224 } 1225 1226 /** 1227 * Called as activities below the top translucent activity are redrawn. When the last one is 1228 * redrawn notify the top activity by calling 1229 * {@link Activity#onTranslucentConversionComplete}. 1230 * 1231 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1232 * occurred and the activity will be notified immediately. 1233 */ 1234 void notifyActivityDrawnLocked(ActivityRecord r) { 1235 mActivityContainer.setDrawn(); 1236 if ((r == null) 1237 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1238 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1239 // The last undrawn activity below the top has just been drawn. If there is an 1240 // opaque activity at the top, notify it that it can become translucent safely now. 1241 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1242 mTranslucentActivityWaiting = null; 1243 mUndrawnActivitiesBelowTopTranslucent.clear(); 1244 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1245 1246 if (waitingActivity != null) { 1247 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1248 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1249 try { 1250 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1251 waitingActivity.appToken, r != null); 1252 } catch (RemoteException e) { 1253 } 1254 } 1255 } 1256 } 1257 } 1258 1259 /** 1260 * Ensure that the top activity in the stack is resumed. 1261 * 1262 * @param prev The previously resumed activity, for when in the process 1263 * of pausing; can be null to call from elsewhere. 1264 * 1265 * @return Returns true if something is being resumed, or false if 1266 * nothing happened. 1267 */ 1268 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1269 return resumeTopActivityLocked(prev, null); 1270 } 1271 1272 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1273 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1274 1275 ActivityRecord parent = mActivityContainer.mParentActivity; 1276 if ((parent != null && parent.state != ActivityState.RESUMED) || 1277 !mActivityContainer.isAttachedLocked()) { 1278 // Do not resume this stack if its parent is not resumed. 1279 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1280 return false; 1281 } 1282 1283 // Find the first activity that is not finishing. 1284 ActivityRecord next = topRunningActivityLocked(null); 1285 1286 // Remember how we'll process this pause/resume situation, and ensure 1287 // that the state is reset however we wind up proceeding. 1288 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1289 mStackSupervisor.mUserLeaving = false; 1290 1291 if (next == null) { 1292 // There are no more activities! Let's just start up the 1293 // Launcher... 1294 ActivityOptions.abort(options); 1295 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1296 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1297 // Only resume home if on home display 1298 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1299 } 1300 1301 next.delayedResume = false; 1302 1303 // If the top activity is the resumed one, nothing to do. 1304 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1305 mStackSupervisor.allResumedActivitiesComplete()) { 1306 // Make sure we have executed any pending transitions, since there 1307 // should be nothing left to do at this point. 1308 mWindowManager.executeAppTransition(); 1309 mNoAnimActivities.clear(); 1310 ActivityOptions.abort(options); 1311 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1312 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1313 return false; 1314 } 1315 1316 final TaskRecord nextTask = next.task; 1317 final TaskRecord prevTask = prev != null ? prev.task : null; 1318 if (prevTask != null && prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1319 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1320 if (prevTask == nextTask) { 1321 prevTask.setFrontOfTask(); 1322 } else if (prevTask != topTask()) { 1323 // This task is going away but it was supposed to return to the home task. 1324 // Now the task above it has to return to the home task instead. 1325 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1326 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1327 } else { 1328 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1329 "resumeTopActivityLocked: Launching home next"); 1330 // Only resume home if on home display 1331 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1332 } 1333 } 1334 1335 // If we are sleeping, and there is no resumed activity, and the top 1336 // activity is paused, well that is the state we want. 1337 if (mService.isSleepingOrShuttingDown() 1338 && mLastPausedActivity == next 1339 && mStackSupervisor.allPausedActivitiesComplete()) { 1340 // Make sure we have executed any pending transitions, since there 1341 // should be nothing left to do at this point. 1342 mWindowManager.executeAppTransition(); 1343 mNoAnimActivities.clear(); 1344 ActivityOptions.abort(options); 1345 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1346 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1347 return false; 1348 } 1349 1350 // Make sure that the user who owns this activity is started. If not, 1351 // we will just leave it as is because someone should be bringing 1352 // another user's activities to the top of the stack. 1353 if (mService.mStartedUsers.get(next.userId) == null) { 1354 Slog.w(TAG, "Skipping resume of top activity " + next 1355 + ": user " + next.userId + " is stopped"); 1356 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1357 return false; 1358 } 1359 1360 // The activity may be waiting for stop, but that is no longer 1361 // appropriate for it. 1362 mStackSupervisor.mStoppingActivities.remove(next); 1363 mStackSupervisor.mGoingToSleepActivities.remove(next); 1364 next.sleeping = false; 1365 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1366 1367 next.updateOptionsLocked(options); 1368 1369 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1370 1371 // If we are currently pausing an activity, then don't do anything 1372 // until that is done. 1373 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1374 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1375 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1376 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1377 return false; 1378 } 1379 1380 // Okay we are now going to start a switch, to 'next'. We may first 1381 // have to pause the current activity, but this is an important point 1382 // where we have decided to go to 'next' so keep track of that. 1383 // XXX "App Redirected" dialog is getting too many false positives 1384 // at this point, so turn off for now. 1385 if (false) { 1386 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1387 long now = SystemClock.uptimeMillis(); 1388 final boolean inTime = mLastStartedActivity.startTime != 0 1389 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1390 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1391 final int nextUid = next.info.applicationInfo.uid; 1392 if (inTime && lastUid != nextUid 1393 && lastUid != next.launchedFromUid 1394 && mService.checkPermission( 1395 android.Manifest.permission.STOP_APP_SWITCHES, 1396 -1, next.launchedFromUid) 1397 != PackageManager.PERMISSION_GRANTED) { 1398 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1399 } else { 1400 next.startTime = now; 1401 mLastStartedActivity = next; 1402 } 1403 } else { 1404 next.startTime = SystemClock.uptimeMillis(); 1405 mLastStartedActivity = next; 1406 } 1407 } 1408 1409 // We need to start pausing the current activity so the top one 1410 // can be resumed... 1411 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1412 if (mResumedActivity != null) { 1413 pausing = true; 1414 startPausingLocked(userLeaving, false); 1415 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1416 } 1417 if (pausing) { 1418 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1419 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1420 // At this point we want to put the upcoming activity's process 1421 // at the top of the LRU list, since we know we will be needing it 1422 // very soon and it would be a waste to let it get killed if it 1423 // happens to be sitting towards the end. 1424 if (next.app != null && next.app.thread != null) { 1425 // No reason to do full oom adj update here; we'll let that 1426 // happen whenever it needs to later. 1427 mService.updateLruProcessLocked(next.app, true, null); 1428 } 1429 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1430 return true; 1431 } 1432 1433 // If the most recent activity was noHistory but was only stopped rather 1434 // than stopped+finished because the device went to sleep, we need to make 1435 // sure to finish it as we're making a new activity topmost. 1436 if (mService.mSleeping && mLastNoHistoryActivity != null && 1437 !mLastNoHistoryActivity.finishing) { 1438 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1439 " on new resume"); 1440 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1441 null, "no-history", false); 1442 mLastNoHistoryActivity = null; 1443 } 1444 1445 if (prev != null && prev != next) { 1446 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1447 prev.waitingVisible = true; 1448 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1449 if (DEBUG_SWITCH) Slog.v( 1450 TAG, "Resuming top, waiting visible to hide: " + prev); 1451 } else { 1452 // The next activity is already visible, so hide the previous 1453 // activity's windows right now so we can show the new one ASAP. 1454 // We only do this if the previous is finishing, which should mean 1455 // it is on top of the one being resumed so hiding it quickly 1456 // is good. Otherwise, we want to do the normal route of allowing 1457 // the resumed activity to be shown so we can decide if the 1458 // previous should actually be hidden depending on whether the 1459 // new one is found to be full-screen or not. 1460 if (prev.finishing) { 1461 mWindowManager.setAppVisibility(prev.appToken, false); 1462 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1463 + prev + ", waitingVisible=" 1464 + (prev != null ? prev.waitingVisible : null) 1465 + ", nowVisible=" + next.nowVisible); 1466 } else { 1467 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1468 + prev + ", waitingVisible=" 1469 + (prev != null ? prev.waitingVisible : null) 1470 + ", nowVisible=" + next.nowVisible); 1471 } 1472 } 1473 } 1474 1475 // Launching this app's activity, make sure the app is no longer 1476 // considered stopped. 1477 try { 1478 AppGlobals.getPackageManager().setPackageStoppedState( 1479 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1480 } catch (RemoteException e1) { 1481 } catch (IllegalArgumentException e) { 1482 Slog.w(TAG, "Failed trying to unstop package " 1483 + next.packageName + ": " + e); 1484 } 1485 1486 // We are starting up the next activity, so tell the window manager 1487 // that the previous one will be hidden soon. This way it can know 1488 // to ignore it when computing the desired screen orientation. 1489 boolean anim = true; 1490 if (prev != null) { 1491 if (prev.finishing) { 1492 if (DEBUG_TRANSITION) Slog.v(TAG, 1493 "Prepare close transition: prev=" + prev); 1494 if (mNoAnimActivities.contains(prev)) { 1495 anim = false; 1496 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1497 } else { 1498 mWindowManager.prepareAppTransition(prev.task == next.task 1499 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1500 : AppTransition.TRANSIT_TASK_CLOSE, false); 1501 } 1502 mWindowManager.setAppWillBeHidden(prev.appToken); 1503 mWindowManager.setAppVisibility(prev.appToken, false); 1504 } else { 1505 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1506 if (mNoAnimActivities.contains(next)) { 1507 anim = false; 1508 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1509 } else { 1510 mWindowManager.prepareAppTransition(prev.task == next.task 1511 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1512 : AppTransition.TRANSIT_TASK_OPEN, false); 1513 } 1514 } 1515 if (false) { 1516 mWindowManager.setAppWillBeHidden(prev.appToken); 1517 mWindowManager.setAppVisibility(prev.appToken, false); 1518 } 1519 } else { 1520 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1521 if (mNoAnimActivities.contains(next)) { 1522 anim = false; 1523 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1524 } else { 1525 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1526 } 1527 } 1528 if (anim) { 1529 next.applyOptionsLocked(); 1530 } else { 1531 next.clearOptionsLocked(); 1532 } 1533 1534 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1535 if (next.app != null && next.app.thread != null) { 1536 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1537 1538 // This activity is now becoming visible. 1539 mWindowManager.setAppVisibility(next.appToken, true); 1540 1541 // schedule launch ticks to collect information about slow apps. 1542 next.startLaunchTickingLocked(); 1543 1544 ActivityRecord lastResumedActivity = 1545 lastStack == null ? null :lastStack.mResumedActivity; 1546 ActivityState lastState = next.state; 1547 1548 mService.updateCpuStats(); 1549 1550 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1551 next.state = ActivityState.RESUMED; 1552 mResumedActivity = next; 1553 next.task.touchActiveTime(); 1554 mService.addRecentTaskLocked(next.task); 1555 mService.updateLruProcessLocked(next.app, true, null); 1556 updateLRUListLocked(next); 1557 mService.updateOomAdjLocked(); 1558 1559 // Have the window manager re-evaluate the orientation of 1560 // the screen based on the new activity order. 1561 boolean notUpdated = true; 1562 if (mStackSupervisor.isFrontStack(this)) { 1563 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1564 mService.mConfiguration, 1565 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1566 if (config != null) { 1567 next.frozenBeforeDestroy = true; 1568 } 1569 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1570 } 1571 1572 if (notUpdated) { 1573 // The configuration update wasn't able to keep the existing 1574 // instance of the activity, and instead started a new one. 1575 // We should be all done, but let's just make sure our activity 1576 // is still at the top and schedule another run if something 1577 // weird happened. 1578 ActivityRecord nextNext = topRunningActivityLocked(null); 1579 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1580 "Activity config changed during resume: " + next 1581 + ", new next: " + nextNext); 1582 if (nextNext != next) { 1583 // Do over! 1584 mStackSupervisor.scheduleResumeTopActivities(); 1585 } 1586 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1587 mNoAnimActivities.clear(); 1588 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1589 return true; 1590 } 1591 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1592 return false; 1593 } 1594 1595 try { 1596 // Deliver all pending results. 1597 ArrayList<ResultInfo> a = next.results; 1598 if (a != null) { 1599 final int N = a.size(); 1600 if (!next.finishing && N > 0) { 1601 if (DEBUG_RESULTS) Slog.v( 1602 TAG, "Delivering results to " + next 1603 + ": " + a); 1604 next.app.thread.scheduleSendResult(next.appToken, a); 1605 } 1606 } 1607 1608 if (next.newIntents != null) { 1609 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1610 } 1611 1612 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1613 next.userId, System.identityHashCode(next), 1614 next.task.taskId, next.shortComponentName); 1615 1616 next.sleeping = false; 1617 mService.showAskCompatModeDialogLocked(next); 1618 next.app.pendingUiClean = true; 1619 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1620 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1621 mService.isNextTransitionForward()); 1622 1623 mStackSupervisor.checkReadyForSleepLocked(); 1624 1625 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1626 } catch (Exception e) { 1627 // Whoops, need to restart this activity! 1628 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1629 + lastState + ": " + next); 1630 next.state = lastState; 1631 if (lastStack != null) { 1632 lastStack.mResumedActivity = lastResumedActivity; 1633 } 1634 Slog.i(TAG, "Restarting because process died: " + next); 1635 if (!next.hasBeenLaunched) { 1636 next.hasBeenLaunched = true; 1637 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1638 mStackSupervisor.isFrontStack(lastStack)) { 1639 mWindowManager.setAppStartingWindow( 1640 next.appToken, next.packageName, next.theme, 1641 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1642 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1643 next.windowFlags, null, true); 1644 } 1645 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1646 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1647 return true; 1648 } 1649 1650 // From this point on, if something goes wrong there is no way 1651 // to recover the activity. 1652 try { 1653 next.visible = true; 1654 completeResumeLocked(next); 1655 } catch (Exception e) { 1656 // If any exception gets thrown, toss away this 1657 // activity and try the next one. 1658 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1659 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1660 "resume-exception", true); 1661 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1662 return true; 1663 } 1664 next.stopped = false; 1665 1666 } else { 1667 // Whoops, need to restart this activity! 1668 if (!next.hasBeenLaunched) { 1669 next.hasBeenLaunched = true; 1670 } else { 1671 if (SHOW_APP_STARTING_PREVIEW) { 1672 mWindowManager.setAppStartingWindow( 1673 next.appToken, next.packageName, next.theme, 1674 mService.compatibilityInfoForPackageLocked( 1675 next.info.applicationInfo), 1676 next.nonLocalizedLabel, 1677 next.labelRes, next.icon, next.logo, next.windowFlags, 1678 null, true); 1679 } 1680 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1681 } 1682 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1683 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1684 } 1685 1686 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1687 return true; 1688 } 1689 1690 private void insertTaskAtTop(TaskRecord task) { 1691 // If this is being moved to the top by another activity or being launched from the home 1692 // activity, set mOnTopOfHome accordingly. 1693 if (isOnHomeDisplay()) { 1694 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1695 final boolean fromHome = lastStack.isHomeStack(); 1696 if (!isHomeStack() && (fromHome || topTask() != task)) { 1697 task.mOnTopOfHome = fromHome; 1698 } 1699 } else { 1700 task.mOnTopOfHome = false; 1701 } 1702 1703 mTaskHistory.remove(task); 1704 // Now put task at top. 1705 int stackNdx = mTaskHistory.size(); 1706 if (task.userId != mCurrentUser) { 1707 // Put non-current user tasks below current user tasks. 1708 while (--stackNdx >= 0) { 1709 if (mTaskHistory.get(stackNdx).userId != mCurrentUser) { 1710 break; 1711 } 1712 } 1713 ++stackNdx; 1714 } 1715 mTaskHistory.add(stackNdx, task); 1716 } 1717 1718 final void startActivityLocked(ActivityRecord r, boolean newTask, 1719 boolean doResume, boolean keepCurTransition, Bundle options) { 1720 TaskRecord rTask = r.task; 1721 final int taskId = rTask.taskId; 1722 if (taskForIdLocked(taskId) == null || newTask) { 1723 // Last activity in task had been removed or ActivityManagerService is reusing task. 1724 // Insert or replace. 1725 // Might not even be in. 1726 insertTaskAtTop(rTask); 1727 mWindowManager.moveTaskToTop(taskId); 1728 } 1729 TaskRecord task = null; 1730 if (!newTask) { 1731 // If starting in an existing task, find where that is... 1732 boolean startIt = true; 1733 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1734 task = mTaskHistory.get(taskNdx); 1735 if (task == r.task) { 1736 // Here it is! Now, if this is not yet visible to the 1737 // user, then just add it without starting; it will 1738 // get started when the user navigates back to it. 1739 if (!startIt) { 1740 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1741 + task, new RuntimeException("here").fillInStackTrace()); 1742 task.addActivityToTop(r); 1743 r.putInHistory(); 1744 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1745 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1746 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1747 r.userId, r.info.configChanges); 1748 if (VALIDATE_TOKENS) { 1749 validateAppTokensLocked(); 1750 } 1751 ActivityOptions.abort(options); 1752 return; 1753 } 1754 break; 1755 } else if (task.numFullscreen > 0) { 1756 startIt = false; 1757 } 1758 } 1759 } 1760 1761 // Place a new activity at top of stack, so it is next to interact 1762 // with the user. 1763 1764 // If we are not placing the new activity frontmost, we do not want 1765 // to deliver the onUserLeaving callback to the actual frontmost 1766 // activity 1767 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1768 mStackSupervisor.mUserLeaving = false; 1769 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1770 "startActivity() behind front, mUserLeaving=false"); 1771 } 1772 1773 task = r.task; 1774 1775 // Slot the activity into the history stack and proceed 1776 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1777 new RuntimeException("here").fillInStackTrace()); 1778 task.addActivityToTop(r); 1779 task.setFrontOfTask(); 1780 1781 r.putInHistory(); 1782 if (!isHomeStack() || numActivities() > 0) { 1783 // We want to show the starting preview window if we are 1784 // switching to a new task, or the next activity's process is 1785 // not currently running. 1786 boolean showStartingIcon = newTask; 1787 ProcessRecord proc = r.app; 1788 if (proc == null) { 1789 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1790 } 1791 if (proc == null || proc.thread == null) { 1792 showStartingIcon = true; 1793 } 1794 if (DEBUG_TRANSITION) Slog.v(TAG, 1795 "Prepare open transition: starting " + r); 1796 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1797 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1798 mNoAnimActivities.add(r); 1799 } else { 1800 mWindowManager.prepareAppTransition(newTask 1801 ? AppTransition.TRANSIT_TASK_OPEN 1802 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1803 mNoAnimActivities.remove(r); 1804 } 1805 r.updateOptionsLocked(options); 1806 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1807 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1808 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1809 r.info.configChanges); 1810 boolean doShow = true; 1811 if (newTask) { 1812 // Even though this activity is starting fresh, we still need 1813 // to reset it to make sure we apply affinities to move any 1814 // existing activities from other tasks in to it. 1815 // If the caller has requested that the target task be 1816 // reset, then do so. 1817 if ((r.intent.getFlags() 1818 &Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1819 resetTaskIfNeededLocked(r, r); 1820 doShow = topRunningNonDelayedActivityLocked(null) == r; 1821 } 1822 } 1823 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1824 // Figure out if we are transitioning from another activity that is 1825 // "has the same starting icon" as the next one. This allows the 1826 // window manager to keep the previous window it had previously 1827 // created, if it still had one. 1828 ActivityRecord prev = mResumedActivity; 1829 if (prev != null) { 1830 // We don't want to reuse the previous starting preview if: 1831 // (1) The current activity is in a different task. 1832 if (prev.task != r.task) { 1833 prev = null; 1834 } 1835 // (2) The current activity is already displayed. 1836 else if (prev.nowVisible) { 1837 prev = null; 1838 } 1839 } 1840 mWindowManager.setAppStartingWindow( 1841 r.appToken, r.packageName, r.theme, 1842 mService.compatibilityInfoForPackageLocked( 1843 r.info.applicationInfo), r.nonLocalizedLabel, 1844 r.labelRes, r.icon, r.logo, r.windowFlags, 1845 prev != null ? prev.appToken : null, showStartingIcon); 1846 } 1847 } else { 1848 // If this is the first activity, don't do any fancy animations, 1849 // because there is nothing for it to animate on top of. 1850 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1851 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1852 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1853 r.info.configChanges); 1854 ActivityOptions.abort(options); 1855 } 1856 if (VALIDATE_TOKENS) { 1857 validateAppTokensLocked(); 1858 } 1859 1860 if (doResume) { 1861 mStackSupervisor.resumeTopActivitiesLocked(); 1862 } 1863 } 1864 1865 final void validateAppTokensLocked() { 1866 mValidateAppTokens.clear(); 1867 mValidateAppTokens.ensureCapacity(numActivities()); 1868 final int numTasks = mTaskHistory.size(); 1869 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1870 TaskRecord task = mTaskHistory.get(taskNdx); 1871 final ArrayList<ActivityRecord> activities = task.mActivities; 1872 if (activities.isEmpty()) { 1873 continue; 1874 } 1875 TaskGroup group = new TaskGroup(); 1876 group.taskId = task.taskId; 1877 mValidateAppTokens.add(group); 1878 final int numActivities = activities.size(); 1879 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 1880 final ActivityRecord r = activities.get(activityNdx); 1881 group.tokens.add(r.appToken); 1882 } 1883 } 1884 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 1885 } 1886 1887 /** 1888 * Perform a reset of the given task, if needed as part of launching it. 1889 * Returns the new HistoryRecord at the top of the task. 1890 */ 1891 /** 1892 * Helper method for #resetTaskIfNeededLocked. 1893 * We are inside of the task being reset... we'll either finish this activity, push it out 1894 * for another task, or leave it as-is. 1895 * @param task The task containing the Activity (taskTop) that might be reset. 1896 * @param forceReset 1897 * @return An ActivityOptions that needs to be processed. 1898 */ 1899 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 1900 ActivityOptions topOptions = null; 1901 1902 int replyChainEnd = -1; 1903 boolean canMoveOptions = true; 1904 1905 // We only do this for activities that are not the root of the task (since if we finish 1906 // the root, we may no longer have the task!). 1907 final ArrayList<ActivityRecord> activities = task.mActivities; 1908 final int numActivities = activities.size(); 1909 for (int i = numActivities - 1; i > 0; --i ) { 1910 ActivityRecord target = activities.get(i); 1911 1912 final int flags = target.info.flags; 1913 final boolean finishOnTaskLaunch = 1914 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 1915 final boolean allowTaskReparenting = 1916 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 1917 final boolean clearWhenTaskReset = 1918 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 1919 1920 if (!finishOnTaskLaunch 1921 && !clearWhenTaskReset 1922 && target.resultTo != null) { 1923 // If this activity is sending a reply to a previous 1924 // activity, we can't do anything with it now until 1925 // we reach the start of the reply chain. 1926 // XXX note that we are assuming the result is always 1927 // to the previous activity, which is almost always 1928 // the case but we really shouldn't count on. 1929 if (replyChainEnd < 0) { 1930 replyChainEnd = i; 1931 } 1932 } else if (!finishOnTaskLaunch 1933 && !clearWhenTaskReset 1934 && allowTaskReparenting 1935 && target.taskAffinity != null 1936 && !target.taskAffinity.equals(task.affinity)) { 1937 // If this activity has an affinity for another 1938 // task, then we need to move it out of here. We will 1939 // move it as far out of the way as possible, to the 1940 // bottom of the activity stack. This also keeps it 1941 // correctly ordered with any activities we previously 1942 // moved. 1943 final ThumbnailHolder newThumbHolder; 1944 final TaskRecord targetTask; 1945 final ActivityRecord bottom = 1946 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 1947 mTaskHistory.get(0).mActivities.get(0) : null; 1948 if (bottom != null && target.taskAffinity != null 1949 && target.taskAffinity.equals(bottom.task.affinity)) { 1950 // If the activity currently at the bottom has the 1951 // same task affinity as the one we are moving, 1952 // then merge it into the same task. 1953 targetTask = bottom.task; 1954 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 1955 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 1956 + " out to bottom task " + bottom.task); 1957 } else { 1958 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 1959 null, false); 1960 newThumbHolder = targetTask; 1961 targetTask.affinityIntent = target.intent; 1962 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 1963 + " out to new task " + target.task); 1964 } 1965 1966 if (clearWhenTaskReset) { 1967 // This is the start of a new sub-task. 1968 if (target.thumbHolder == null) { 1969 target.thumbHolder = new ThumbnailHolder(); 1970 } 1971 } else { 1972 target.thumbHolder = newThumbHolder; 1973 } 1974 1975 final int targetTaskId = targetTask.taskId; 1976 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 1977 1978 boolean noOptions = canMoveOptions; 1979 final int start = replyChainEnd < 0 ? i : replyChainEnd; 1980 for (int srcPos = start; srcPos >= i; --srcPos) { 1981 final ActivityRecord p = activities.get(srcPos); 1982 if (p.finishing) { 1983 continue; 1984 } 1985 1986 ThumbnailHolder curThumbHolder = p.thumbHolder; 1987 canMoveOptions = false; 1988 if (noOptions && topOptions == null) { 1989 topOptions = p.takeOptionsLocked(); 1990 if (topOptions != null) { 1991 noOptions = false; 1992 } 1993 } 1994 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 1995 + task + " adding to task=" + targetTask 1996 + " Callers=" + Debug.getCallers(4)); 1997 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 1998 + " out to target's task " + target.task); 1999 p.setTask(targetTask, curThumbHolder, false); 2000 targetTask.addActivityAtBottom(p); 2001 2002 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2003 } 2004 2005 mWindowManager.moveTaskToBottom(targetTaskId); 2006 if (VALIDATE_TOKENS) { 2007 validateAppTokensLocked(); 2008 } 2009 2010 replyChainEnd = -1; 2011 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2012 // If the activity should just be removed -- either 2013 // because it asks for it, or the task should be 2014 // cleared -- then finish it and anything that is 2015 // part of its reply chain. 2016 int end; 2017 if (clearWhenTaskReset) { 2018 // In this case, we want to finish this activity 2019 // and everything above it, so be sneaky and pretend 2020 // like these are all in the reply chain. 2021 end = numActivities - 1; 2022 } else if (replyChainEnd < 0) { 2023 end = i; 2024 } else { 2025 end = replyChainEnd; 2026 } 2027 boolean noOptions = canMoveOptions; 2028 for (int srcPos = i; srcPos <= end; srcPos++) { 2029 ActivityRecord p = activities.get(srcPos); 2030 if (p.finishing) { 2031 continue; 2032 } 2033 canMoveOptions = false; 2034 if (noOptions && topOptions == null) { 2035 topOptions = p.takeOptionsLocked(); 2036 if (topOptions != null) { 2037 noOptions = false; 2038 } 2039 } 2040 if (DEBUG_TASKS) Slog.w(TAG, 2041 "resetTaskIntendedTask: calling finishActivity on " + p); 2042 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2043 end--; 2044 srcPos--; 2045 } 2046 } 2047 replyChainEnd = -1; 2048 } else { 2049 // If we were in the middle of a chain, well the 2050 // activity that started it all doesn't want anything 2051 // special, so leave it all as-is. 2052 replyChainEnd = -1; 2053 } 2054 } 2055 2056 return topOptions; 2057 } 2058 2059 /** 2060 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2061 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2062 * @param affinityTask The task we are looking for an affinity to. 2063 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2064 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2065 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2066 */ 2067 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2068 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2069 int replyChainEnd = -1; 2070 final int taskId = task.taskId; 2071 final String taskAffinity = task.affinity; 2072 2073 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2074 final int numActivities = activities.size(); 2075 // Do not operate on the root Activity. 2076 for (int i = numActivities - 1; i > 0; --i) { 2077 ActivityRecord target = activities.get(i); 2078 2079 final int flags = target.info.flags; 2080 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2081 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2082 2083 if (target.resultTo != null) { 2084 // If this activity is sending a reply to a previous 2085 // activity, we can't do anything with it now until 2086 // we reach the start of the reply chain. 2087 // XXX note that we are assuming the result is always 2088 // to the previous activity, which is almost always 2089 // the case but we really shouldn't count on. 2090 if (replyChainEnd < 0) { 2091 replyChainEnd = i; 2092 } 2093 } else if (topTaskIsHigher 2094 && allowTaskReparenting 2095 && taskAffinity != null 2096 && taskAffinity.equals(target.taskAffinity)) { 2097 // This activity has an affinity for our task. Either remove it if we are 2098 // clearing or move it over to our task. Note that 2099 // we currently punt on the case where we are resetting a 2100 // task that is not at the top but who has activities above 2101 // with an affinity to it... this is really not a normal 2102 // case, and we will need to later pull that task to the front 2103 // and usually at that point we will do the reset and pick 2104 // up those remaining activities. (This only happens if 2105 // someone starts an activity in a new task from an activity 2106 // in a task that is not currently on top.) 2107 if (forceReset || finishOnTaskLaunch) { 2108 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2109 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2110 for (int srcPos = start; srcPos >= i; --srcPos) { 2111 final ActivityRecord p = activities.get(srcPos); 2112 if (p.finishing) { 2113 continue; 2114 } 2115 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2116 } 2117 } else { 2118 if (taskInsertionPoint < 0) { 2119 taskInsertionPoint = task.mActivities.size(); 2120 2121 } 2122 2123 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2124 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2125 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2126 for (int srcPos = start; srcPos >= i; --srcPos) { 2127 final ActivityRecord p = activities.get(srcPos); 2128 p.setTask(task, null, false); 2129 task.addActivityAtIndex(taskInsertionPoint, p); 2130 2131 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2132 + " to stack at " + task, 2133 new RuntimeException("here").fillInStackTrace()); 2134 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2135 + " in to resetting task " + task); 2136 mWindowManager.setAppGroupId(p.appToken, taskId); 2137 } 2138 mWindowManager.moveTaskToTop(taskId); 2139 if (VALIDATE_TOKENS) { 2140 validateAppTokensLocked(); 2141 } 2142 2143 // Now we've moved it in to place... but what if this is 2144 // a singleTop activity and we have put it on top of another 2145 // instance of the same activity? Then we drop the instance 2146 // below so it remains singleTop. 2147 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2148 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2149 int targetNdx = taskActivities.indexOf(target); 2150 if (targetNdx > 0) { 2151 ActivityRecord p = taskActivities.get(targetNdx - 1); 2152 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2153 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2154 false); 2155 } 2156 } 2157 } 2158 } 2159 2160 replyChainEnd = -1; 2161 } 2162 } 2163 return taskInsertionPoint; 2164 } 2165 2166 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2167 ActivityRecord newActivity) { 2168 boolean forceReset = 2169 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2170 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2171 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2172 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2173 forceReset = true; 2174 } 2175 } 2176 2177 final TaskRecord task = taskTop.task; 2178 2179 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2180 * for remaining tasks. Used for later tasks to reparent to task. */ 2181 boolean taskFound = false; 2182 2183 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2184 ActivityOptions topOptions = null; 2185 2186 // Preserve the location for reparenting in the new task. 2187 int reparentInsertionPoint = -1; 2188 2189 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2190 final TaskRecord targetTask = mTaskHistory.get(i); 2191 2192 if (targetTask == task) { 2193 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2194 taskFound = true; 2195 } else { 2196 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2197 taskFound, forceReset, reparentInsertionPoint); 2198 } 2199 } 2200 2201 int taskNdx = mTaskHistory.indexOf(task); 2202 do { 2203 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2204 } while (taskTop == null && taskNdx >= 0); 2205 2206 if (topOptions != null) { 2207 // If we got some ActivityOptions from an activity on top that 2208 // was removed from the task, propagate them to the new real top. 2209 if (taskTop != null) { 2210 taskTop.updateOptionsLocked(topOptions); 2211 } else { 2212 topOptions.abort(); 2213 } 2214 } 2215 2216 return taskTop; 2217 } 2218 2219 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2220 String resultWho, int requestCode, int resultCode, Intent data) { 2221 2222 if (callingUid > 0) { 2223 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2224 data, r.getUriPermissionsLocked()); 2225 } 2226 2227 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2228 + " : who=" + resultWho + " req=" + requestCode 2229 + " res=" + resultCode + " data=" + data); 2230 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2231 try { 2232 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2233 list.add(new ResultInfo(resultWho, requestCode, 2234 resultCode, data)); 2235 r.app.thread.scheduleSendResult(r.appToken, list); 2236 return; 2237 } catch (Exception e) { 2238 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2239 } 2240 } 2241 2242 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2243 } 2244 2245 private void adjustFocusedActivityLocked(ActivityRecord r) { 2246 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2247 ActivityRecord next = topRunningActivityLocked(null); 2248 if (next != r) { 2249 final TaskRecord task = r.task; 2250 if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) { 2251 mStackSupervisor.moveHomeToTop(); 2252 } 2253 } 2254 mService.setFocusedActivityLocked(mStackSupervisor.topRunningActivityLocked()); 2255 } 2256 } 2257 2258 final void stopActivityLocked(ActivityRecord r) { 2259 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2260 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2261 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2262 if (!r.finishing) { 2263 if (!mService.mSleeping) { 2264 if (DEBUG_STATES) { 2265 Slog.d(TAG, "no-history finish of " + r); 2266 } 2267 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2268 "no-history", false); 2269 } else { 2270 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2271 + " on stop because we're just sleeping"); 2272 } 2273 } 2274 } 2275 2276 if (r.app != null && r.app.thread != null) { 2277 adjustFocusedActivityLocked(r); 2278 r.resumeKeyDispatchingLocked(); 2279 try { 2280 r.stopped = false; 2281 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2282 + " (stop requested)"); 2283 r.state = ActivityState.STOPPING; 2284 if (DEBUG_VISBILITY) Slog.v( 2285 TAG, "Stopping visible=" + r.visible + " for " + r); 2286 if (!r.visible) { 2287 mWindowManager.setAppVisibility(r.appToken, false); 2288 } 2289 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2290 if (mService.isSleepingOrShuttingDown()) { 2291 r.setSleeping(true); 2292 } 2293 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2294 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2295 } catch (Exception e) { 2296 // Maybe just ignore exceptions here... if the process 2297 // has crashed, our death notification will clean things 2298 // up. 2299 Slog.w(TAG, "Exception thrown during pause", e); 2300 // Just in case, assume it to be stopped. 2301 r.stopped = true; 2302 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2303 r.state = ActivityState.STOPPED; 2304 if (r.configDestroy) { 2305 destroyActivityLocked(r, true, false, "stop-except"); 2306 } 2307 } 2308 } 2309 } 2310 2311 /** 2312 * @return Returns true if the activity is being finished, false if for 2313 * some reason it is being left as-is. 2314 */ 2315 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2316 Intent resultData, String reason, boolean oomAdj) { 2317 ActivityRecord r = isInStackLocked(token); 2318 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2319 TAG, "Finishing activity token=" + token + " r=" 2320 + ", result=" + resultCode + ", data=" + resultData 2321 + ", reason=" + reason); 2322 if (r == null) { 2323 return false; 2324 } 2325 2326 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2327 return true; 2328 } 2329 2330 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2331 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2332 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2333 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2334 ActivityRecord r = activities.get(activityNdx); 2335 if (r.resultTo == self && r.requestCode == requestCode) { 2336 if ((r.resultWho == null && resultWho == null) || 2337 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2338 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2339 false); 2340 } 2341 } 2342 } 2343 } 2344 mService.updateOomAdjLocked(); 2345 } 2346 2347 final void finishTopRunningActivityLocked(ProcessRecord app) { 2348 ActivityRecord r = topRunningActivityLocked(null); 2349 if (r != null && r.app == app) { 2350 // If the top running activity is from this crashing 2351 // process, then terminate it to avoid getting in a loop. 2352 Slog.w(TAG, " Force finishing activity " 2353 + r.intent.getComponent().flattenToShortString()); 2354 int taskNdx = mTaskHistory.indexOf(r.task); 2355 int activityNdx = r.task.mActivities.indexOf(r); 2356 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2357 // Also terminate any activities below it that aren't yet 2358 // stopped, to avoid a situation where one will get 2359 // re-start our crashing activity once it gets resumed again. 2360 --activityNdx; 2361 if (activityNdx < 0) { 2362 do { 2363 --taskNdx; 2364 if (taskNdx < 0) { 2365 break; 2366 } 2367 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2368 } while (activityNdx < 0); 2369 } 2370 if (activityNdx >= 0) { 2371 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2372 if (r.state == ActivityState.RESUMED 2373 || r.state == ActivityState.PAUSING 2374 || r.state == ActivityState.PAUSED) { 2375 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2376 Slog.w(TAG, " Force finishing activity " 2377 + r.intent.getComponent().flattenToShortString()); 2378 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2379 } 2380 } 2381 } 2382 } 2383 } 2384 2385 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2386 ArrayList<ActivityRecord> activities = r.task.mActivities; 2387 for (int index = activities.indexOf(r); index >= 0; --index) { 2388 ActivityRecord cur = activities.get(index); 2389 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2390 break; 2391 } 2392 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2393 } 2394 return true; 2395 } 2396 2397 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2398 // send the result 2399 ActivityRecord resultTo = r.resultTo; 2400 if (resultTo != null) { 2401 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2402 + " who=" + r.resultWho + " req=" + r.requestCode 2403 + " res=" + resultCode + " data=" + resultData); 2404 if (r.info.applicationInfo.uid > 0) { 2405 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2406 resultTo.packageName, resultData, 2407 resultTo.getUriPermissionsLocked()); 2408 } 2409 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2410 resultData); 2411 r.resultTo = null; 2412 } 2413 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2414 2415 // Make sure this HistoryRecord is not holding on to other resources, 2416 // because clients have remote IPC references to this object so we 2417 // can't assume that will go away and want to avoid circular IPC refs. 2418 r.results = null; 2419 r.pendingResults = null; 2420 r.newIntents = null; 2421 r.icicle = null; 2422 } 2423 2424 /** 2425 * @return Returns true if this activity has been removed from the history 2426 * list, or false if it is still in the list and will be removed later. 2427 */ 2428 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2429 String reason, boolean oomAdj) { 2430 if (r.finishing) { 2431 Slog.w(TAG, "Duplicate finish request for " + r); 2432 return false; 2433 } 2434 2435 r.makeFinishing(); 2436 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2437 r.userId, System.identityHashCode(r), 2438 r.task.taskId, r.shortComponentName, reason); 2439 final ArrayList<ActivityRecord> activities = r.task.mActivities; 2440 final int index = activities.indexOf(r); 2441 if (index < (activities.size() - 1)) { 2442 r.task.setFrontOfTask(); 2443 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2444 // If the caller asked that this activity (and all above it) 2445 // be cleared when the task is reset, don't lose that information, 2446 // but propagate it up to the next activity. 2447 ActivityRecord next = activities.get(index+1); 2448 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2449 } 2450 } 2451 2452 r.pauseKeyDispatchingLocked(); 2453 2454 adjustFocusedActivityLocked(r); 2455 2456 finishActivityResultsLocked(r, resultCode, resultData); 2457 2458 if (!mService.mPendingThumbnails.isEmpty()) { 2459 // There are clients waiting to receive thumbnails so, in case 2460 // this is an activity that someone is waiting for, add it 2461 // to the pending list so we can correctly update the clients. 2462 mStackSupervisor.mCancelledThumbnails.add(r); 2463 } 2464 2465 if (mResumedActivity == r) { 2466 boolean endTask = index <= 0; 2467 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2468 "Prepare close transition: finishing " + r); 2469 mWindowManager.prepareAppTransition(endTask 2470 ? AppTransition.TRANSIT_TASK_CLOSE 2471 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2472 2473 // Tell window manager to prepare for this one to be removed. 2474 mWindowManager.setAppVisibility(r.appToken, false); 2475 2476 if (mPausingActivity == null) { 2477 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2478 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2479 startPausingLocked(false, false); 2480 } 2481 2482 } else if (r.state != ActivityState.PAUSING) { 2483 // If the activity is PAUSING, we will complete the finish once 2484 // it is done pausing; else we can just directly finish it here. 2485 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2486 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2487 } else { 2488 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2489 } 2490 2491 return false; 2492 } 2493 2494 static final int FINISH_IMMEDIATELY = 0; 2495 static final int FINISH_AFTER_PAUSE = 1; 2496 static final int FINISH_AFTER_VISIBLE = 2; 2497 2498 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2499 // First things first: if this activity is currently visible, 2500 // and the resumed activity is not yet visible, then hold off on 2501 // finishing until the resumed one becomes visible. 2502 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2503 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2504 mStackSupervisor.mStoppingActivities.add(r); 2505 if (mStackSupervisor.mStoppingActivities.size() > 3 2506 || r.frontOfTask && mTaskHistory.size() <= 1) { 2507 // If we already have a few activities waiting to stop, 2508 // then give up on things going idle and start clearing 2509 // them out. Or if r is the last of activity of the last task the stack 2510 // will be empty and must be cleared immediately. 2511 mStackSupervisor.scheduleIdleLocked(); 2512 } else { 2513 mStackSupervisor.checkReadyForSleepLocked(); 2514 } 2515 } 2516 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2517 + " (finish requested)"); 2518 r.state = ActivityState.STOPPING; 2519 if (oomAdj) { 2520 mService.updateOomAdjLocked(); 2521 } 2522 return r; 2523 } 2524 2525 // make sure the record is cleaned out of other places. 2526 mStackSupervisor.mStoppingActivities.remove(r); 2527 mStackSupervisor.mGoingToSleepActivities.remove(r); 2528 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2529 if (mResumedActivity == r) { 2530 mResumedActivity = null; 2531 } 2532 final ActivityState prevState = r.state; 2533 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2534 r.state = ActivityState.FINISHING; 2535 2536 if (mode == FINISH_IMMEDIATELY 2537 || prevState == ActivityState.STOPPED 2538 || prevState == ActivityState.INITIALIZING) { 2539 // If this activity is already stopped, we can just finish 2540 // it right now. 2541 r.makeFinishing(); 2542 boolean activityRemoved = destroyActivityLocked(r, true, oomAdj, "finish-imm"); 2543 if (activityRemoved) { 2544 mStackSupervisor.resumeTopActivitiesLocked(); 2545 } 2546 if (DEBUG_CONTAINERS) Slog.d(TAG, 2547 "destroyActivityLocked: finishCurrentActivityLocked r=" + r + 2548 " destroy returned removed=" + activityRemoved); 2549 return activityRemoved ? null : r; 2550 } 2551 2552 // Need to go through the full pause cycle to get this 2553 // activity into the stopped state and then finish it. 2554 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2555 mStackSupervisor.mFinishingActivities.add(r); 2556 r.resumeKeyDispatchingLocked(); 2557 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2558 return r; 2559 } 2560 2561 void finishAllActivitiesLocked() { 2562 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2563 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2564 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2565 final ActivityRecord r = activities.get(activityNdx); 2566 if (r.finishing) { 2567 continue; 2568 } 2569 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2570 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2571 } 2572 } 2573 } 2574 2575 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2576 Intent resultData) { 2577 final ActivityRecord srec = ActivityRecord.forToken(token); 2578 final TaskRecord task = srec.task; 2579 final ArrayList<ActivityRecord> activities = task.mActivities; 2580 final int start = activities.indexOf(srec); 2581 if (!mTaskHistory.contains(task) || (start < 0)) { 2582 return false; 2583 } 2584 int finishTo = start - 1; 2585 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2586 boolean foundParentInTask = false; 2587 final ComponentName dest = destIntent.getComponent(); 2588 if (start > 0 && dest != null) { 2589 for (int i = finishTo; i >= 0; i--) { 2590 ActivityRecord r = activities.get(i); 2591 if (r.info.packageName.equals(dest.getPackageName()) && 2592 r.info.name.equals(dest.getClassName())) { 2593 finishTo = i; 2594 parent = r; 2595 foundParentInTask = true; 2596 break; 2597 } 2598 } 2599 } 2600 2601 IActivityController controller = mService.mController; 2602 if (controller != null) { 2603 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2604 if (next != null) { 2605 // ask watcher if this is allowed 2606 boolean resumeOK = true; 2607 try { 2608 resumeOK = controller.activityResuming(next.packageName); 2609 } catch (RemoteException e) { 2610 mService.mController = null; 2611 Watchdog.getInstance().setActivityController(null); 2612 } 2613 2614 if (!resumeOK) { 2615 return false; 2616 } 2617 } 2618 } 2619 final long origId = Binder.clearCallingIdentity(); 2620 for (int i = start; i > finishTo; i--) { 2621 ActivityRecord r = activities.get(i); 2622 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2623 // Only return the supplied result for the first activity finished 2624 resultCode = Activity.RESULT_CANCELED; 2625 resultData = null; 2626 } 2627 2628 if (parent != null && foundParentInTask) { 2629 final int parentLaunchMode = parent.info.launchMode; 2630 final int destIntentFlags = destIntent.getFlags(); 2631 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2632 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2633 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2634 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2635 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2636 } else { 2637 try { 2638 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2639 destIntent.getComponent(), 0, srec.userId); 2640 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2641 null, aInfo, parent.appToken, null, 2642 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2643 0, null, true, null, null); 2644 foundParentInTask = res == ActivityManager.START_SUCCESS; 2645 } catch (RemoteException e) { 2646 foundParentInTask = false; 2647 } 2648 requestFinishActivityLocked(parent.appToken, resultCode, 2649 resultData, "navigate-up", true); 2650 } 2651 } 2652 Binder.restoreCallingIdentity(origId); 2653 return foundParentInTask; 2654 } 2655 /** 2656 * Perform the common clean-up of an activity record. This is called both 2657 * as part of destroyActivityLocked() (when destroying the client-side 2658 * representation) and cleaning things up as a result of its hosting 2659 * processing going away, in which case there is no remaining client-side 2660 * state to destroy so only the cleanup here is needed. 2661 */ 2662 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2663 boolean setState) { 2664 if (mResumedActivity == r) { 2665 mResumedActivity = null; 2666 } 2667 if (mService.mFocusedActivity == r) { 2668 mService.mFocusedActivity = null; 2669 } 2670 2671 r.configDestroy = false; 2672 r.frozenBeforeDestroy = false; 2673 2674 if (setState) { 2675 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2676 r.state = ActivityState.DESTROYED; 2677 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2678 r.app = null; 2679 } 2680 2681 // Make sure this record is no longer in the pending finishes list. 2682 // This could happen, for example, if we are trimming activities 2683 // down to the max limit while they are still waiting to finish. 2684 mStackSupervisor.mFinishingActivities.remove(r); 2685 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2686 2687 // Remove any pending results. 2688 if (r.finishing && r.pendingResults != null) { 2689 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2690 PendingIntentRecord rec = apr.get(); 2691 if (rec != null) { 2692 mService.cancelIntentSenderLocked(rec, false); 2693 } 2694 } 2695 r.pendingResults = null; 2696 } 2697 2698 if (cleanServices) { 2699 cleanUpActivityServicesLocked(r); 2700 } 2701 2702 if (!mService.mPendingThumbnails.isEmpty()) { 2703 // There are clients waiting to receive thumbnails so, in case 2704 // this is an activity that someone is waiting for, add it 2705 // to the pending list so we can correctly update the clients. 2706 mStackSupervisor.mCancelledThumbnails.add(r); 2707 } 2708 2709 // Get rid of any pending idle timeouts. 2710 removeTimeoutsForActivityLocked(r); 2711 } 2712 2713 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2714 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2715 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2716 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2717 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2718 r.finishLaunchTickingLocked(); 2719 } 2720 2721 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2722 mStackSupervisor.removeChildActivityContainers(r); 2723 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2724 r.makeFinishing(); 2725 if (DEBUG_ADD_REMOVE) { 2726 RuntimeException here = new RuntimeException("here"); 2727 here.fillInStackTrace(); 2728 Slog.i(TAG, "Removing activity " + r + " from stack"); 2729 } 2730 r.takeFromHistory(); 2731 removeTimeoutsForActivityLocked(r); 2732 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2733 r.state = ActivityState.DESTROYED; 2734 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2735 r.app = null; 2736 mWindowManager.removeAppToken(r.appToken); 2737 if (VALIDATE_TOKENS) { 2738 validateAppTokensLocked(); 2739 } 2740 final TaskRecord task = r.task; 2741 if (task != null && task.removeActivity(r)) { 2742 if (DEBUG_STACK) Slog.i(TAG, 2743 "removeActivityFromHistoryLocked: last activity removed from " + this); 2744 if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) { 2745 mStackSupervisor.moveHomeToTop(); 2746 } 2747 removeTask(task); 2748 } 2749 cleanUpActivityServicesLocked(r); 2750 r.removeUriPermissionsLocked(); 2751 } 2752 2753 /** 2754 * Perform clean-up of service connections in an activity record. 2755 */ 2756 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2757 // Throw away any services that have been bound by this activity. 2758 if (r.connections != null) { 2759 Iterator<ConnectionRecord> it = r.connections.iterator(); 2760 while (it.hasNext()) { 2761 ConnectionRecord c = it.next(); 2762 mService.mServices.removeConnectionLocked(c, null, r); 2763 } 2764 r.connections = null; 2765 } 2766 } 2767 2768 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2769 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2770 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2771 mHandler.sendMessage(msg); 2772 } 2773 2774 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2775 boolean lastIsOpaque = false; 2776 boolean activityRemoved = false; 2777 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2778 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2779 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2780 final ActivityRecord r = activities.get(activityNdx); 2781 if (r.finishing) { 2782 continue; 2783 } 2784 if (r.fullscreen) { 2785 lastIsOpaque = true; 2786 } 2787 if (owner != null && r.app != owner) { 2788 continue; 2789 } 2790 if (!lastIsOpaque) { 2791 continue; 2792 } 2793 // We can destroy this one if we have its icicle saved and 2794 // it is not in the process of pausing/stopping/finishing. 2795 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2796 && r.haveState && !r.visible && r.stopped 2797 && r.state != ActivityState.DESTROYING 2798 && r.state != ActivityState.DESTROYED) { 2799 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2800 + " resumed=" + mResumedActivity 2801 + " pausing=" + mPausingActivity); 2802 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2803 activityRemoved = true; 2804 } 2805 } 2806 } 2807 } 2808 if (activityRemoved) { 2809 mStackSupervisor.resumeTopActivitiesLocked(); 2810 } 2811 } 2812 2813 /** 2814 * Destroy the current CLIENT SIDE instance of an activity. This may be 2815 * called both when actually finishing an activity, or when performing 2816 * a configuration switch where we destroy the current client-side object 2817 * but then create a new client-side object for this same HistoryRecord. 2818 */ 2819 final boolean destroyActivityLocked(ActivityRecord r, 2820 boolean removeFromApp, boolean oomAdj, String reason) { 2821 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2822 TAG, "Removing activity from " + reason + ": token=" + r 2823 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2824 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2825 r.userId, System.identityHashCode(r), 2826 r.task.taskId, r.shortComponentName, reason); 2827 2828 boolean removedFromHistory = false; 2829 2830 cleanUpActivityLocked(r, false, false); 2831 2832 final boolean hadApp = r.app != null; 2833 2834 if (hadApp) { 2835 if (removeFromApp) { 2836 r.app.activities.remove(r); 2837 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2838 mService.mHeavyWeightProcess = null; 2839 mService.mHandler.sendEmptyMessage( 2840 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2841 } 2842 if (r.app.activities.isEmpty()) { 2843 // No longer have activities, so update LRU list and oom adj. 2844 mService.updateLruProcessLocked(r.app, false, null); 2845 mService.updateOomAdjLocked(); 2846 } 2847 } 2848 2849 boolean skipDestroy = false; 2850 2851 try { 2852 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2853 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2854 r.configChangeFlags); 2855 } catch (Exception e) { 2856 // We can just ignore exceptions here... if the process 2857 // has crashed, our death notification will clean things 2858 // up. 2859 //Slog.w(TAG, "Exception thrown during finish", e); 2860 if (r.finishing) { 2861 removeActivityFromHistoryLocked(r); 2862 removedFromHistory = true; 2863 skipDestroy = true; 2864 } 2865 } 2866 2867 r.nowVisible = false; 2868 2869 // If the activity is finishing, we need to wait on removing it 2870 // from the list to give it a chance to do its cleanup. During 2871 // that time it may make calls back with its token so we need to 2872 // be able to find it on the list and so we don't want to remove 2873 // it from the list yet. Otherwise, we can just immediately put 2874 // it in the destroyed state since we are not removing it from the 2875 // list. 2876 if (r.finishing && !skipDestroy) { 2877 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2878 + " (destroy requested)"); 2879 r.state = ActivityState.DESTROYING; 2880 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2881 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2882 } else { 2883 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 2884 r.state = ActivityState.DESTROYED; 2885 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2886 r.app = null; 2887 } 2888 } else { 2889 // remove this record from the history. 2890 if (r.finishing) { 2891 removeActivityFromHistoryLocked(r); 2892 removedFromHistory = true; 2893 } else { 2894 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 2895 r.state = ActivityState.DESTROYED; 2896 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 2897 r.app = null; 2898 } 2899 } 2900 2901 r.configChangeFlags = 0; 2902 2903 if (!mLRUActivities.remove(r) && hadApp) { 2904 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 2905 } 2906 2907 return removedFromHistory; 2908 } 2909 2910 final void activityDestroyedLocked(IBinder token) { 2911 final long origId = Binder.clearCallingIdentity(); 2912 try { 2913 ActivityRecord r = ActivityRecord.forToken(token); 2914 if (r != null) { 2915 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2916 } 2917 if (DEBUG_CONTAINERS) Slog.d(TAG, "activityDestroyedLocked: r=" + r); 2918 2919 if (isInStackLocked(token) != null) { 2920 if (r.state == ActivityState.DESTROYING) { 2921 cleanUpActivityLocked(r, true, false); 2922 removeActivityFromHistoryLocked(r); 2923 } 2924 } 2925 mStackSupervisor.resumeTopActivitiesLocked(); 2926 } finally { 2927 Binder.restoreCallingIdentity(origId); 2928 } 2929 } 2930 2931 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 2932 ProcessRecord app, String listName) { 2933 int i = list.size(); 2934 if (DEBUG_CLEANUP) Slog.v( 2935 TAG, "Removing app " + app + " from list " + listName 2936 + " with " + i + " entries"); 2937 while (i > 0) { 2938 i--; 2939 ActivityRecord r = list.get(i); 2940 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 2941 if (r.app == app) { 2942 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 2943 list.remove(i); 2944 removeTimeoutsForActivityLocked(r); 2945 } 2946 } 2947 } 2948 2949 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 2950 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 2951 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 2952 "mStoppingActivities"); 2953 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 2954 "mGoingToSleepActivities"); 2955 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 2956 "mWaitingVisibleActivities"); 2957 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 2958 "mFinishingActivities"); 2959 2960 boolean hasVisibleActivities = false; 2961 2962 // Clean out the history list. 2963 int i = numActivities(); 2964 if (DEBUG_CLEANUP) Slog.v( 2965 TAG, "Removing app " + app + " from history with " + i + " entries"); 2966 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2967 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2968 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2969 final ActivityRecord r = activities.get(activityNdx); 2970 --i; 2971 if (DEBUG_CLEANUP) Slog.v( 2972 TAG, "Record #" + i + " " + r + ": app=" + r.app); 2973 if (r.app == app) { 2974 boolean remove; 2975 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 2976 // Don't currently have state for the activity, or 2977 // it is finishing -- always remove it. 2978 remove = true; 2979 } else if (r.launchCount > 2 && 2980 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 2981 // We have launched this activity too many times since it was 2982 // able to run, so give up and remove it. 2983 remove = true; 2984 } else { 2985 // The process may be gone, but the activity lives on! 2986 remove = false; 2987 } 2988 if (remove) { 2989 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 2990 RuntimeException here = new RuntimeException("here"); 2991 here.fillInStackTrace(); 2992 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 2993 + ": haveState=" + r.haveState 2994 + " stateNotNeeded=" + r.stateNotNeeded 2995 + " finishing=" + r.finishing 2996 + " state=" + r.state, here); 2997 } 2998 if (!r.finishing) { 2999 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3000 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3001 r.userId, System.identityHashCode(r), 3002 r.task.taskId, r.shortComponentName, 3003 "proc died without state saved"); 3004 if (r.state == ActivityState.RESUMED) { 3005 mService.updateUsageStats(r, false); 3006 } 3007 } 3008 removeActivityFromHistoryLocked(r); 3009 3010 } else { 3011 // We have the current state for this activity, so 3012 // it can be restarted later when needed. 3013 if (localLOGV) Slog.v( 3014 TAG, "Keeping entry, setting app to null"); 3015 if (r.visible) { 3016 hasVisibleActivities = true; 3017 } 3018 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3019 + r); 3020 r.app = null; 3021 r.nowVisible = false; 3022 if (!r.haveState) { 3023 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3024 "App died, clearing saved state of " + r); 3025 r.icicle = null; 3026 } 3027 } 3028 3029 cleanUpActivityLocked(r, true, true); 3030 } 3031 } 3032 } 3033 3034 return hasVisibleActivities; 3035 } 3036 3037 final void updateTransitLocked(int transit, Bundle options) { 3038 if (options != null) { 3039 ActivityRecord r = topRunningActivityLocked(null); 3040 if (r != null && r.state != ActivityState.RESUMED) { 3041 r.updateOptionsLocked(options); 3042 } else { 3043 ActivityOptions.abort(options); 3044 } 3045 } 3046 mWindowManager.prepareAppTransition(transit, false); 3047 } 3048 3049 void moveHomeTaskToTop() { 3050 final int top = mTaskHistory.size() - 1; 3051 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3052 final TaskRecord task = mTaskHistory.get(taskNdx); 3053 if (task.isHomeTask()) { 3054 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task); 3055 mTaskHistory.remove(taskNdx); 3056 mTaskHistory.add(top, task); 3057 mWindowManager.moveTaskToTop(task.taskId); 3058 return; 3059 } 3060 } 3061 } 3062 3063 final boolean findTaskToMoveToFrontLocked(int taskId, int flags, Bundle options) { 3064 final TaskRecord task = taskForIdLocked(taskId); 3065 if (task != null) { 3066 if ((flags & ActivityManager.MOVE_TASK_NO_USER_ACTION) == 0) { 3067 mStackSupervisor.mUserLeaving = true; 3068 } 3069 if ((flags & ActivityManager.MOVE_TASK_WITH_HOME) != 0) { 3070 // Caller wants the home activity moved with it. To accomplish this, 3071 // we'll just indicate that this task returns to the home task. 3072 task.mOnTopOfHome = true; 3073 } 3074 moveTaskToFrontLocked(task, null, options); 3075 return true; 3076 } 3077 return false; 3078 } 3079 3080 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3081 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3082 3083 final int numTasks = mTaskHistory.size(); 3084 final int index = mTaskHistory.indexOf(tr); 3085 if (numTasks == 0 || index < 0) { 3086 // nothing to do! 3087 if (reason != null && 3088 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3089 ActivityOptions.abort(options); 3090 } else { 3091 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3092 } 3093 return; 3094 } 3095 3096 moveToFront(); 3097 3098 // Shift all activities with this task up to the top 3099 // of the stack, keeping them in the same internal order. 3100 insertTaskAtTop(tr); 3101 3102 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3103 if (reason != null && 3104 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3105 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3106 ActivityRecord r = topRunningActivityLocked(null); 3107 if (r != null) { 3108 mNoAnimActivities.add(r); 3109 } 3110 ActivityOptions.abort(options); 3111 } else { 3112 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3113 } 3114 3115 mWindowManager.moveTaskToTop(tr.taskId); 3116 3117 mStackSupervisor.resumeTopActivitiesLocked(); 3118 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3119 3120 if (VALIDATE_TOKENS) { 3121 validateAppTokensLocked(); 3122 } 3123 } 3124 3125 /** 3126 * Worker method for rearranging history stack. Implements the function of moving all 3127 * activities for a specific task (gathering them if disjoint) into a single group at the 3128 * bottom of the stack. 3129 * 3130 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3131 * to premeptively cancel the move. 3132 * 3133 * @param taskId The taskId to collect and move to the bottom. 3134 * @return Returns true if the move completed, false if not. 3135 */ 3136 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3137 Slog.i(TAG, "moveTaskToBack: " + taskId); 3138 3139 // If we have a watcher, preflight the move before committing to it. First check 3140 // for *other* available tasks, but if none are available, then try again allowing the 3141 // current task to be selected. 3142 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3143 ActivityRecord next = topRunningActivityLocked(null, taskId); 3144 if (next == null) { 3145 next = topRunningActivityLocked(null, 0); 3146 } 3147 if (next != null) { 3148 // ask watcher if this is allowed 3149 boolean moveOK = true; 3150 try { 3151 moveOK = mService.mController.activityResuming(next.packageName); 3152 } catch (RemoteException e) { 3153 mService.mController = null; 3154 Watchdog.getInstance().setActivityController(null); 3155 } 3156 if (!moveOK) { 3157 return false; 3158 } 3159 } 3160 } 3161 3162 if (DEBUG_TRANSITION) Slog.v(TAG, 3163 "Prepare to back transition: task=" + taskId); 3164 3165 final TaskRecord tr = taskForIdLocked(taskId); 3166 if (tr == null) { 3167 return false; 3168 } 3169 3170 mTaskHistory.remove(tr); 3171 mTaskHistory.add(0, tr); 3172 3173 // There is an assumption that moving a task to the back moves it behind the home activity. 3174 // We make sure here that some activity in the stack will launch home. 3175 ActivityRecord lastActivity = null; 3176 int numTasks = mTaskHistory.size(); 3177 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3178 final TaskRecord task = mTaskHistory.get(taskNdx); 3179 if (task.mOnTopOfHome) { 3180 break; 3181 } 3182 if (taskNdx == 1) { 3183 // Set the last task before tr to go to home. 3184 task.mOnTopOfHome = true; 3185 } 3186 } 3187 3188 if (reason != null && 3189 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3190 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3191 ActivityRecord r = topRunningActivityLocked(null); 3192 if (r != null) { 3193 mNoAnimActivities.add(r); 3194 } 3195 } else { 3196 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3197 } 3198 mWindowManager.moveTaskToBottom(taskId); 3199 3200 if (VALIDATE_TOKENS) { 3201 validateAppTokensLocked(); 3202 } 3203 3204 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3205 if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) { 3206 tr.mOnTopOfHome = false; 3207 return mStackSupervisor.resumeHomeActivity(null); 3208 } 3209 3210 mStackSupervisor.resumeTopActivitiesLocked(); 3211 return true; 3212 } 3213 3214 static final void logStartActivity(int tag, ActivityRecord r, 3215 TaskRecord task) { 3216 final Uri data = r.intent.getData(); 3217 final String strData = data != null ? data.toSafeString() : null; 3218 3219 EventLog.writeEvent(tag, 3220 r.userId, System.identityHashCode(r), task.taskId, 3221 r.shortComponentName, r.intent.getAction(), 3222 r.intent.getType(), strData, r.intent.getFlags()); 3223 } 3224 3225 /** 3226 * Make sure the given activity matches the current configuration. Returns 3227 * false if the activity had to be destroyed. Returns true if the 3228 * configuration is the same, or the activity will remain running as-is 3229 * for whatever reason. Ensures the HistoryRecord is updated with the 3230 * correct configuration and all other bookkeeping is handled. 3231 */ 3232 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3233 int globalChanges) { 3234 if (mConfigWillChange) { 3235 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3236 "Skipping config check (will change): " + r); 3237 return true; 3238 } 3239 3240 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3241 "Ensuring correct configuration: " + r); 3242 3243 // Short circuit: if the two configurations are the exact same 3244 // object (the common case), then there is nothing to do. 3245 Configuration newConfig = mService.mConfiguration; 3246 if (r.configuration == newConfig && !r.forceNewConfig) { 3247 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3248 "Configuration unchanged in " + r); 3249 return true; 3250 } 3251 3252 // We don't worry about activities that are finishing. 3253 if (r.finishing) { 3254 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3255 "Configuration doesn't matter in finishing " + r); 3256 r.stopFreezingScreenLocked(false); 3257 return true; 3258 } 3259 3260 // Okay we now are going to make this activity have the new config. 3261 // But then we need to figure out how it needs to deal with that. 3262 Configuration oldConfig = r.configuration; 3263 r.configuration = newConfig; 3264 3265 // Determine what has changed. May be nothing, if this is a config 3266 // that has come back from the app after going idle. In that case 3267 // we just want to leave the official config object now in the 3268 // activity and do nothing else. 3269 final int changes = oldConfig.diff(newConfig); 3270 if (changes == 0 && !r.forceNewConfig) { 3271 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3272 "Configuration no differences in " + r); 3273 return true; 3274 } 3275 3276 // If the activity isn't currently running, just leave the new 3277 // configuration and it will pick that up next time it starts. 3278 if (r.app == null || r.app.thread == null) { 3279 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3280 "Configuration doesn't matter not running " + r); 3281 r.stopFreezingScreenLocked(false); 3282 r.forceNewConfig = false; 3283 return true; 3284 } 3285 3286 // Figure out how to handle the changes between the configurations. 3287 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3288 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3289 + Integer.toHexString(changes) + ", handles=0x" 3290 + Integer.toHexString(r.info.getRealConfigChanged()) 3291 + ", newConfig=" + newConfig); 3292 } 3293 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3294 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3295 r.configChangeFlags |= changes; 3296 r.startFreezingScreenLocked(r.app, globalChanges); 3297 r.forceNewConfig = false; 3298 if (r.app == null || r.app.thread == null) { 3299 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3300 "Config is destroying non-running " + r); 3301 destroyActivityLocked(r, true, false, "config"); 3302 } else if (r.state == ActivityState.PAUSING) { 3303 // A little annoying: we are waiting for this activity to 3304 // finish pausing. Let's not do anything now, but just 3305 // flag that it needs to be restarted when done pausing. 3306 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3307 "Config is skipping already pausing " + r); 3308 r.configDestroy = true; 3309 return true; 3310 } else if (r.state == ActivityState.RESUMED) { 3311 // Try to optimize this case: the configuration is changing 3312 // and we need to restart the top, resumed activity. 3313 // Instead of doing the normal handshaking, just say 3314 // "restart!". 3315 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3316 "Config is relaunching resumed " + r); 3317 relaunchActivityLocked(r, r.configChangeFlags, true); 3318 r.configChangeFlags = 0; 3319 } else { 3320 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3321 "Config is relaunching non-resumed " + r); 3322 relaunchActivityLocked(r, r.configChangeFlags, false); 3323 r.configChangeFlags = 0; 3324 } 3325 3326 // All done... tell the caller we weren't able to keep this 3327 // activity around. 3328 return false; 3329 } 3330 3331 // Default case: the activity can handle this new configuration, so 3332 // hand it over. Note that we don't need to give it the new 3333 // configuration, since we always send configuration changes to all 3334 // process when they happen so it can just use whatever configuration 3335 // it last got. 3336 if (r.app != null && r.app.thread != null) { 3337 try { 3338 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3339 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3340 } catch (RemoteException e) { 3341 // If process died, whatever. 3342 } 3343 } 3344 r.stopFreezingScreenLocked(false); 3345 3346 return true; 3347 } 3348 3349 private boolean relaunchActivityLocked(ActivityRecord r, 3350 int changes, boolean andResume) { 3351 List<ResultInfo> results = null; 3352 List<Intent> newIntents = null; 3353 if (andResume) { 3354 results = r.results; 3355 newIntents = r.newIntents; 3356 } 3357 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3358 + " with results=" + results + " newIntents=" + newIntents 3359 + " andResume=" + andResume); 3360 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3361 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3362 r.task.taskId, r.shortComponentName); 3363 3364 r.startFreezingScreenLocked(r.app, 0); 3365 3366 mStackSupervisor.removeChildActivityContainers(r); 3367 3368 try { 3369 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3370 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3371 + r); 3372 r.forceNewConfig = false; 3373 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3374 changes, !andResume, new Configuration(mService.mConfiguration)); 3375 // Note: don't need to call pauseIfSleepingLocked() here, because 3376 // the caller will only pass in 'andResume' if this activity is 3377 // currently resumed, which implies we aren't sleeping. 3378 } catch (RemoteException e) { 3379 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3380 } 3381 3382 if (andResume) { 3383 r.results = null; 3384 r.newIntents = null; 3385 r.state = ActivityState.RESUMED; 3386 } else { 3387 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3388 r.state = ActivityState.PAUSED; 3389 } 3390 3391 return true; 3392 } 3393 3394 boolean willActivityBeVisibleLocked(IBinder token) { 3395 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3396 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3397 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3398 final ActivityRecord r = activities.get(activityNdx); 3399 if (r.appToken == token) { 3400 return true; 3401 } 3402 if (r.fullscreen && !r.finishing) { 3403 return false; 3404 } 3405 } 3406 } 3407 final ActivityRecord r = ActivityRecord.forToken(token); 3408 if (r == null) { 3409 return false; 3410 } 3411 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3412 + " would have returned true for r=" + r); 3413 return !r.finishing; 3414 } 3415 3416 void closeSystemDialogsLocked() { 3417 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3418 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3419 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3420 final ActivityRecord r = activities.get(activityNdx); 3421 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3422 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3423 } 3424 } 3425 } 3426 } 3427 3428 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3429 boolean didSomething = false; 3430 TaskRecord lastTask = null; 3431 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3432 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3433 int numActivities = activities.size(); 3434 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3435 ActivityRecord r = activities.get(activityNdx); 3436 final boolean samePackage = r.packageName.equals(name) 3437 || (name == null && r.userId == userId); 3438 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3439 && (samePackage || r.task == lastTask) 3440 && (r.app == null || evenPersistent || !r.app.persistent)) { 3441 if (!doit) { 3442 if (r.finishing) { 3443 // If this activity is just finishing, then it is not 3444 // interesting as far as something to stop. 3445 continue; 3446 } 3447 return true; 3448 } 3449 didSomething = true; 3450 Slog.i(TAG, " Force finishing activity " + r); 3451 if (samePackage) { 3452 if (r.app != null) { 3453 r.app.removed = true; 3454 } 3455 r.app = null; 3456 } 3457 lastTask = r.task; 3458 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3459 true)) { 3460 // r has been deleted from mActivities, accommodate. 3461 --numActivities; 3462 --activityNdx; 3463 } 3464 } 3465 } 3466 } 3467 return didSomething; 3468 } 3469 3470 ActivityRecord getTasksLocked(IThumbnailReceiver receiver, 3471 PendingThumbnailsRecord pending, List<RunningTaskInfo> list) { 3472 ActivityRecord topRecord = null; 3473 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3474 final TaskRecord task = mTaskHistory.get(taskNdx); 3475 ActivityRecord r = null; 3476 ActivityRecord top = null; 3477 int numActivities = 0; 3478 int numRunning = 0; 3479 final ArrayList<ActivityRecord> activities = task.mActivities; 3480 if (activities.isEmpty()) { 3481 continue; 3482 } 3483 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3484 r = activities.get(activityNdx); 3485 3486 // Initialize state for next task if needed. 3487 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3488 top = r; 3489 numActivities = numRunning = 0; 3490 } 3491 3492 // Add 'r' into the current task. 3493 numActivities++; 3494 if (r.app != null && r.app.thread != null) { 3495 numRunning++; 3496 } 3497 3498 if (localLOGV) Slog.v( 3499 TAG, r.intent.getComponent().flattenToShortString() 3500 + ": task=" + r.task); 3501 } 3502 3503 RunningTaskInfo ci = new RunningTaskInfo(); 3504 ci.id = task.taskId; 3505 ci.baseActivity = r.intent.getComponent(); 3506 ci.topActivity = top.intent.getComponent(); 3507 ci.lastActiveTime = task.lastActiveTime; 3508 3509 if (top.thumbHolder != null) { 3510 ci.description = top.thumbHolder.lastDescription; 3511 } 3512 ci.numActivities = numActivities; 3513 ci.numRunning = numRunning; 3514 //System.out.println( 3515 // "#" + maxNum + ": " + " descr=" + ci.description); 3516 if (receiver != null) { 3517 if (localLOGV) Slog.v( 3518 TAG, "State=" + top.state + "Idle=" + top.idle 3519 + " app=" + top.app 3520 + " thr=" + (top.app != null ? top.app.thread : null)); 3521 if (top.state == ActivityState.RESUMED || top.state == ActivityState.PAUSING) { 3522 if (top.idle && top.app != null && top.app.thread != null) { 3523 topRecord = top; 3524 } else { 3525 top.thumbnailNeeded = true; 3526 } 3527 } 3528 pending.pendingRecords.add(top); 3529 } 3530 list.add(ci); 3531 } 3532 return topRecord; 3533 } 3534 3535 public void unhandledBackLocked() { 3536 final int top = mTaskHistory.size() - 1; 3537 if (DEBUG_SWITCH) Slog.d( 3538 TAG, "Performing unhandledBack(): top activity at " + top); 3539 if (top >= 0) { 3540 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3541 int activityTop = activities.size() - 1; 3542 if (activityTop > 0) { 3543 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3544 "unhandled-back", true); 3545 } 3546 } 3547 } 3548 3549 /** 3550 * Reset local parameters because an app's activity died. 3551 * @param app The app of the activity that died. 3552 * @return result from removeHistoryRecordsForAppLocked. 3553 */ 3554 boolean handleAppDiedLocked(ProcessRecord app) { 3555 if (mPausingActivity != null && mPausingActivity.app == app) { 3556 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3557 "App died while pausing: " + mPausingActivity); 3558 mPausingActivity = null; 3559 } 3560 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3561 mLastPausedActivity = null; 3562 mLastNoHistoryActivity = null; 3563 } 3564 3565 return removeHistoryRecordsForAppLocked(app); 3566 } 3567 3568 void handleAppCrashLocked(ProcessRecord app) { 3569 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3570 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3571 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3572 final ActivityRecord r = activities.get(activityNdx); 3573 if (r.app == app) { 3574 Slog.w(TAG, " Force finishing activity " 3575 + r.intent.getComponent().flattenToShortString()); 3576 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3577 } 3578 } 3579 } 3580 } 3581 3582 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3583 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3584 boolean printed = false; 3585 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3586 final TaskRecord task = mTaskHistory.get(taskNdx); 3587 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3588 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3589 dumpClient, dumpPackage, needSep, header, 3590 " Task id #" + task.taskId); 3591 if (printed) { 3592 header = null; 3593 } 3594 } 3595 return printed; 3596 } 3597 3598 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3599 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3600 3601 if ("all".equals(name)) { 3602 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3603 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3604 } 3605 } else if ("top".equals(name)) { 3606 final int top = mTaskHistory.size() - 1; 3607 if (top >= 0) { 3608 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3609 int listTop = list.size() - 1; 3610 if (listTop >= 0) { 3611 activities.add(list.get(listTop)); 3612 } 3613 } 3614 } else { 3615 ItemMatcher matcher = new ItemMatcher(); 3616 matcher.build(name); 3617 3618 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3619 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3620 if (matcher.match(r1, r1.intent.getComponent())) { 3621 activities.add(r1); 3622 } 3623 } 3624 } 3625 } 3626 3627 return activities; 3628 } 3629 3630 ActivityRecord restartPackage(String packageName) { 3631 ActivityRecord starting = topRunningActivityLocked(null); 3632 3633 // All activities that came from the package must be 3634 // restarted as if there was a config change. 3635 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3636 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3637 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3638 final ActivityRecord a = activities.get(activityNdx); 3639 if (a.info.packageName.equals(packageName)) { 3640 a.forceNewConfig = true; 3641 if (starting != null && a == starting && a.visible) { 3642 a.startFreezingScreenLocked(starting.app, 3643 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3644 } 3645 } 3646 } 3647 } 3648 3649 return starting; 3650 } 3651 3652 void removeTask(TaskRecord task) { 3653 mWindowManager.removeTask(task.taskId); 3654 final ActivityRecord r = mResumedActivity; 3655 if (r != null && r.task == task) { 3656 mResumedActivity = null; 3657 } 3658 3659 final int taskNdx = mTaskHistory.indexOf(task); 3660 final int topTaskNdx = mTaskHistory.size() - 1; 3661 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3662 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3663 } 3664 mTaskHistory.remove(task); 3665 3666 if (mTaskHistory.isEmpty()) { 3667 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3668 if (isOnHomeDisplay()) { 3669 mStackSupervisor.moveHomeStack(!isHomeStack()); 3670 } 3671 if (mStacks != null) { 3672 mStacks.remove(this); 3673 mStacks.add(0, this); 3674 } 3675 mActivityContainer.onTaskListEmptyLocked(); 3676 } 3677 } 3678 3679 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, boolean toTop) { 3680 TaskRecord task = new TaskRecord(taskId, info, intent); 3681 addTask(task, toTop); 3682 return task; 3683 } 3684 3685 ArrayList<TaskRecord> getAllTasks() { 3686 return new ArrayList<TaskRecord>(mTaskHistory); 3687 } 3688 3689 void addTask(final TaskRecord task, final boolean toTop) { 3690 task.stack = this; 3691 if (toTop) { 3692 insertTaskAtTop(task); 3693 } else { 3694 mTaskHistory.add(0, task); 3695 } 3696 } 3697 3698 public int getStackId() { 3699 return mStackId; 3700 } 3701 3702 @Override 3703 public String toString() { 3704 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3705 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3706 } 3707} 3708