ActivityStack.java revision 6784f1c62379f2226d895cd944d716c17f4cb195
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.am; 18 19import static com.android.server.am.ActivityManagerService.TAG; 20import static com.android.server.am.ActivityManagerService.localLOGV; 21import static com.android.server.am.ActivityManagerService.DEBUG_CLEANUP; 22import static com.android.server.am.ActivityManagerService.DEBUG_CONFIGURATION; 23import static com.android.server.am.ActivityManagerService.DEBUG_PAUSE; 24import static com.android.server.am.ActivityManagerService.DEBUG_RESULTS; 25import static com.android.server.am.ActivityManagerService.DEBUG_STACK; 26import static com.android.server.am.ActivityManagerService.DEBUG_SWITCH; 27import static com.android.server.am.ActivityManagerService.DEBUG_TASKS; 28import static com.android.server.am.ActivityManagerService.DEBUG_TRANSITION; 29import static com.android.server.am.ActivityManagerService.DEBUG_USER_LEAVING; 30import static com.android.server.am.ActivityManagerService.DEBUG_VISBILITY; 31import static com.android.server.am.ActivityManagerService.VALIDATE_TOKENS; 32 33import static com.android.server.am.ActivityStackSupervisor.DEBUG_ADD_REMOVE; 34import static com.android.server.am.ActivityStackSupervisor.DEBUG_APP; 35import static com.android.server.am.ActivityStackSupervisor.DEBUG_SAVED_STATE; 36import static com.android.server.am.ActivityStackSupervisor.DEBUG_SCREENSHOTS; 37import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 38import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 39 40import android.service.voice.IVoiceInteractionSession; 41import com.android.internal.app.IVoiceInteractor; 42import com.android.internal.os.BatteryStatsImpl; 43import com.android.server.Watchdog; 44import com.android.server.am.ActivityManagerService.ItemMatcher; 45import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 46import com.android.server.wm.AppTransition; 47import com.android.server.wm.TaskGroup; 48import com.android.server.wm.WindowManagerService; 49 50import android.app.Activity; 51import android.app.ActivityManager; 52import android.app.ActivityOptions; 53import android.app.AppGlobals; 54import android.app.IActivityController; 55import android.app.ResultInfo; 56import android.app.ActivityManager.RunningTaskInfo; 57import android.content.ComponentName; 58import android.content.Intent; 59import android.content.pm.ActivityInfo; 60import android.content.pm.PackageManager; 61import android.content.res.Configuration; 62import android.content.res.Resources; 63import android.graphics.Bitmap; 64import android.net.Uri; 65import android.os.Binder; 66import android.os.Bundle; 67import android.os.Debug; 68import android.os.Handler; 69import android.os.IBinder; 70import android.os.Looper; 71import android.os.Message; 72import android.os.PersistableBundle; 73import android.os.RemoteException; 74import android.os.SystemClock; 75import android.os.Trace; 76import android.os.UserHandle; 77import android.util.EventLog; 78import android.util.Slog; 79import android.view.Display; 80 81import java.io.FileDescriptor; 82import java.io.PrintWriter; 83import java.lang.ref.WeakReference; 84import java.util.ArrayList; 85import java.util.Iterator; 86import java.util.List; 87import java.util.Objects; 88 89/** 90 * State and management of a single stack of activities. 91 */ 92final class ActivityStack { 93 94 // Ticks during which we check progress while waiting for an app to launch. 95 static final int LAUNCH_TICK = 500; 96 97 // How long we wait until giving up on the last activity to pause. This 98 // is short because it directly impacts the responsiveness of starting the 99 // next activity. 100 static final int PAUSE_TIMEOUT = 500; 101 102 // How long we wait for the activity to tell us it has stopped before 103 // giving up. This is a good amount of time because we really need this 104 // from the application in order to get its saved state. 105 static final int STOP_TIMEOUT = 10*1000; 106 107 // How long we wait until giving up on an activity telling us it has 108 // finished destroying itself. 109 static final int DESTROY_TIMEOUT = 10*1000; 110 111 // How long until we reset a task when the user returns to it. Currently 112 // disabled. 113 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 114 115 // How long between activity launches that we consider safe to not warn 116 // the user about an unexpected activity being launched on top. 117 static final long START_WARN_TIME = 5*1000; 118 119 // Set to false to disable the preview that is shown while a new activity 120 // is being started. 121 static final boolean SHOW_APP_STARTING_PREVIEW = true; 122 123 // How long to wait for all background Activities to redraw following a call to 124 // convertToTranslucent(). 125 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 126 127 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 128 129 enum ActivityState { 130 INITIALIZING, 131 RESUMED, 132 PAUSING, 133 PAUSED, 134 STOPPING, 135 STOPPED, 136 FINISHING, 137 DESTROYING, 138 DESTROYED 139 } 140 141 final ActivityManagerService mService; 142 final WindowManagerService mWindowManager; 143 144 /** 145 * The back history of all previous (and possibly still 146 * running) activities. It contains #TaskRecord objects. 147 */ 148 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 149 150 /** 151 * Used for validating app tokens with window manager. 152 */ 153 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 154 155 /** 156 * List of running activities, sorted by recent usage. 157 * The first entry in the list is the least recently used. 158 * It contains HistoryRecord objects. 159 */ 160 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 161 162 /** 163 * Animations that for the current transition have requested not to 164 * be considered for the transition animation. 165 */ 166 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 167 168 /** 169 * When we are in the process of pausing an activity, before starting the 170 * next one, this variable holds the activity that is currently being paused. 171 */ 172 ActivityRecord mPausingActivity = null; 173 174 /** 175 * This is the last activity that we put into the paused state. This is 176 * used to determine if we need to do an activity transition while sleeping, 177 * when we normally hold the top activity paused. 178 */ 179 ActivityRecord mLastPausedActivity = null; 180 181 /** 182 * Activities that specify No History must be removed once the user navigates away from them. 183 * If the device goes to sleep with such an activity in the paused state then we save it here 184 * and finish it later if another activity replaces it on wakeup. 185 */ 186 ActivityRecord mLastNoHistoryActivity = null; 187 188 /** 189 * Current activity that is resumed, or null if there is none. 190 */ 191 ActivityRecord mResumedActivity = null; 192 193 /** 194 * This is the last activity that has been started. It is only used to 195 * identify when multiple activities are started at once so that the user 196 * can be warned they may not be in the activity they think they are. 197 */ 198 ActivityRecord mLastStartedActivity = null; 199 200 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 201 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 202 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 203 // Activity in mTranslucentActivityWaiting is notified via 204 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 205 // background activity being drawn then the same call will be made with a true value. 206 ActivityRecord mTranslucentActivityWaiting = null; 207 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 208 new ArrayList<ActivityRecord>(); 209 // Options passed from the caller of the convertToTranslucent to the activity that will 210 // appear below it. 211 ActivityOptions mReturningActivityOptions = null; 212 213 /** 214 * Set when we know we are going to be calling updateConfiguration() 215 * soon, so want to skip intermediate config checks. 216 */ 217 boolean mConfigWillChange; 218 219 long mLaunchStartTime = 0; 220 long mFullyDrawnStartTime = 0; 221 222 /** 223 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 224 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 225 */ 226 private ActivityRecord mLastScreenshotActivity = null; 227 private Bitmap mLastScreenshotBitmap = null; 228 229 int mThumbnailWidth = -1; 230 int mThumbnailHeight = -1; 231 232 int mCurrentUser; 233 234 final int mStackId; 235 final ActivityContainer mActivityContainer; 236 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 237 ArrayList<ActivityStack> mStacks; 238 /** The attached Display's unique identifier, or -1 if detached */ 239 int mDisplayId; 240 241 /** Run all ActivityStacks through this */ 242 final ActivityStackSupervisor mStackSupervisor; 243 244 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 245 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 246 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 247 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 248 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 249 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 250 251 static class ScheduleDestroyArgs { 252 final ProcessRecord mOwner; 253 final boolean mOomAdj; 254 final String mReason; 255 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 256 mOwner = owner; 257 mOomAdj = oomAdj; 258 mReason = reason; 259 } 260 } 261 262 final Handler mHandler; 263 264 final class ActivityStackHandler extends Handler { 265 //public Handler() { 266 // if (localLOGV) Slog.v(TAG, "Handler started!"); 267 //} 268 ActivityStackHandler(Looper looper) { 269 super(looper); 270 } 271 272 @Override 273 public void handleMessage(Message msg) { 274 switch (msg.what) { 275 case PAUSE_TIMEOUT_MSG: { 276 ActivityRecord r = (ActivityRecord)msg.obj; 277 // We don't at this point know if the activity is fullscreen, 278 // so we need to be conservative and assume it isn't. 279 Slog.w(TAG, "Activity pause timeout for " + r); 280 synchronized (mService) { 281 if (r.app != null) { 282 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 283 } 284 activityPausedLocked(r.appToken, true, r.persistentState); 285 } 286 } break; 287 case LAUNCH_TICK_MSG: { 288 ActivityRecord r = (ActivityRecord)msg.obj; 289 synchronized (mService) { 290 if (r.continueLaunchTickingLocked()) { 291 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 292 } 293 } 294 } break; 295 case DESTROY_TIMEOUT_MSG: { 296 ActivityRecord r = (ActivityRecord)msg.obj; 297 // We don't at this point know if the activity is fullscreen, 298 // so we need to be conservative and assume it isn't. 299 Slog.w(TAG, "Activity destroy timeout for " + r); 300 synchronized (mService) { 301 activityDestroyedLocked(r != null ? r.appToken : null); 302 } 303 } break; 304 case STOP_TIMEOUT_MSG: { 305 ActivityRecord r = (ActivityRecord)msg.obj; 306 // We don't at this point know if the activity is fullscreen, 307 // so we need to be conservative and assume it isn't. 308 Slog.w(TAG, "Activity stop timeout for " + r); 309 synchronized (mService) { 310 if (r.isInHistory()) { 311 activityStoppedLocked(r, null, null, null); 312 } 313 } 314 } break; 315 case DESTROY_ACTIVITIES_MSG: { 316 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 317 synchronized (mService) { 318 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 319 } 320 } break; 321 case TRANSLUCENT_TIMEOUT_MSG: { 322 synchronized (mService) { 323 notifyActivityDrawnLocked(null); 324 } 325 } break; 326 } 327 } 328 } 329 330 int numActivities() { 331 int count = 0; 332 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 333 count += mTaskHistory.get(taskNdx).mActivities.size(); 334 } 335 return count; 336 } 337 338 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 339 mActivityContainer = activityContainer; 340 mStackSupervisor = activityContainer.getOuter(); 341 mService = mStackSupervisor.mService; 342 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 343 mWindowManager = mService.mWindowManager; 344 mStackId = activityContainer.mStackId; 345 mCurrentUser = mService.mCurrentUserId; 346 // Get the activity screenshot thumbnail dimensions 347 Resources res = mService.mContext.getResources(); 348 mThumbnailWidth = res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 349 mThumbnailHeight = res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 350 } 351 352 /** 353 * Checks whether the userid is a profile of the current user. 354 */ 355 private boolean isCurrentProfileLocked(int userId) { 356 if (userId == mCurrentUser) return true; 357 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 358 if (mService.mCurrentProfileIds[i] == userId) return true; 359 } 360 return false; 361 } 362 363 boolean okToShowLocked(ActivityRecord r) { 364 return isCurrentProfileLocked(r.userId) 365 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 366 } 367 368 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 369 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 370 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 371 if (r != null) { 372 return r; 373 } 374 } 375 return null; 376 } 377 378 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 379 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 380 final TaskRecord task = mTaskHistory.get(taskNdx); 381 final ArrayList<ActivityRecord> activities = task.mActivities; 382 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 383 ActivityRecord r = activities.get(activityNdx); 384 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 385 return r; 386 } 387 } 388 } 389 return null; 390 } 391 392 /** 393 * This is a simplified version of topRunningActivityLocked that provides a number of 394 * optional skip-over modes. It is intended for use with the ActivityController hook only. 395 * 396 * @param token If non-null, any history records matching this token will be skipped. 397 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 398 * 399 * @return Returns the HistoryRecord of the next activity on the stack. 400 */ 401 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 402 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 403 TaskRecord task = mTaskHistory.get(taskNdx); 404 if (task.taskId == taskId) { 405 continue; 406 } 407 ArrayList<ActivityRecord> activities = task.mActivities; 408 for (int i = activities.size() - 1; i >= 0; --i) { 409 final ActivityRecord r = activities.get(i); 410 // Note: the taskId check depends on real taskId fields being non-zero 411 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 412 return r; 413 } 414 } 415 } 416 return null; 417 } 418 419 final ActivityRecord topActivity() { 420 // Iterate to find the first non-empty task stack. Note that this code can 421 // be simplified once we stop storing tasks with empty mActivities lists. 422 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 423 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 424 final int topActivityNdx = activities.size() - 1; 425 if (topActivityNdx >= 0) { 426 return activities.get(topActivityNdx); 427 } 428 } 429 return null; 430 } 431 432 final TaskRecord topTask() { 433 final int size = mTaskHistory.size(); 434 if (size > 0) { 435 return mTaskHistory.get(size - 1); 436 } 437 return null; 438 } 439 440 TaskRecord taskForIdLocked(int id) { 441 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 442 final TaskRecord task = mTaskHistory.get(taskNdx); 443 if (task.taskId == id) { 444 return task; 445 } 446 } 447 return null; 448 } 449 450 ActivityRecord isInStackLocked(IBinder token) { 451 final ActivityRecord r = ActivityRecord.forToken(token); 452 if (r != null) { 453 final TaskRecord task = r.task; 454 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 455 if (task.stack != this) Slog.w(TAG, 456 "Illegal state! task does not point to stack it is in."); 457 return r; 458 } 459 } 460 return null; 461 } 462 463 final boolean updateLRUListLocked(ActivityRecord r) { 464 final boolean hadit = mLRUActivities.remove(r); 465 mLRUActivities.add(r); 466 return hadit; 467 } 468 469 final boolean isHomeStack() { 470 return mStackId == HOME_STACK_ID; 471 } 472 473 final boolean isOnHomeDisplay() { 474 return isAttached() && 475 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 476 } 477 478 final void moveToFront() { 479 if (isAttached()) { 480 if (isOnHomeDisplay()) { 481 mStackSupervisor.moveHomeStack(isHomeStack()); 482 } 483 mStacks.remove(this); 484 mStacks.add(this); 485 } 486 } 487 488 final boolean isAttached() { 489 return mStacks != null; 490 } 491 492 /** 493 * Returns the top activity in any existing task matching the given 494 * Intent. Returns null if no such task is found. 495 */ 496 ActivityRecord findTaskLocked(ActivityRecord target) { 497 Intent intent = target.intent; 498 ActivityInfo info = target.info; 499 ComponentName cls = intent.getComponent(); 500 if (info.targetActivity != null) { 501 cls = new ComponentName(info.packageName, info.targetActivity); 502 } 503 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 504 boolean isDocument = intent != null & intent.isDocument(); 505 // If documentData is non-null then it must match the existing task data. 506 Uri documentData = isDocument ? intent.getData() : null; 507 508 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 509 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 510 final TaskRecord task = mTaskHistory.get(taskNdx); 511 if (task.voiceSession != null) { 512 // We never match voice sessions; those always run independently. 513 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 514 continue; 515 } 516 if (task.userId != userId) { 517 // Looking for a different task. 518 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 519 continue; 520 } 521 final ActivityRecord r = task.getTopActivity(); 522 if (r == null || r.finishing || r.userId != userId || 523 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 524 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 525 continue; 526 } 527 528 final Intent taskIntent = task.intent; 529 final Intent affinityIntent = task.affinityIntent; 530 final boolean taskIsDocument; 531 final Uri taskDocumentData; 532 if (taskIntent != null && taskIntent.isDocument()) { 533 taskIsDocument = true; 534 taskDocumentData = taskIntent.getData(); 535 } else if (affinityIntent != null && affinityIntent.isDocument()) { 536 taskIsDocument = true; 537 taskDocumentData = affinityIntent.getData(); 538 } else { 539 taskIsDocument = false; 540 taskDocumentData = null; 541 } 542 543 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 544 + taskIntent.getComponent().flattenToShortString() 545 + "/aff=" + r.task.affinity + " to new cls=" 546 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 547 if (!isDocument && !taskIsDocument && task.affinity != null) { 548 if (task.affinity.equals(target.taskAffinity)) { 549 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 550 return r; 551 } 552 } else if (taskIntent != null && taskIntent.getComponent().equals(cls) && 553 Objects.equals(documentData, taskDocumentData)) { 554 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 555 //dump(); 556 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 557 + r.intent); 558 return r; 559 } else if (affinityIntent != null && affinityIntent.getComponent().equals(cls) && 560 Objects.equals(documentData, taskDocumentData)) { 561 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 562 //dump(); 563 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 564 + r.intent); 565 return r; 566 } else if (DEBUG_TASKS) { 567 Slog.d(TAG, "Not a match: " + task); 568 } 569 } 570 571 return null; 572 } 573 574 /** 575 * Returns the first activity (starting from the top of the stack) that 576 * is the same as the given activity. Returns null if no such activity 577 * is found. 578 */ 579 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 580 ComponentName cls = intent.getComponent(); 581 if (info.targetActivity != null) { 582 cls = new ComponentName(info.packageName, info.targetActivity); 583 } 584 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 585 586 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 587 TaskRecord task = mTaskHistory.get(taskNdx); 588 if (!isCurrentProfileLocked(task.userId)) { 589 return null; 590 } 591 final ArrayList<ActivityRecord> activities = task.mActivities; 592 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 593 ActivityRecord r = activities.get(activityNdx); 594 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 595 //Slog.i(TAG, "Found matching class!"); 596 //dump(); 597 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 598 return r; 599 } 600 } 601 } 602 603 return null; 604 } 605 606 /* 607 * Move the activities around in the stack to bring a user to the foreground. 608 */ 609 final void switchUserLocked(int userId) { 610 if (mCurrentUser == userId) { 611 return; 612 } 613 mCurrentUser = userId; 614 615 // Move userId's tasks to the top. 616 int index = mTaskHistory.size(); 617 for (int i = 0; i < index; ) { 618 TaskRecord task = mTaskHistory.get(i); 619 if (isCurrentProfileLocked(task.userId)) { 620 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 621 " moving " + task + " to top"); 622 mTaskHistory.remove(i); 623 mTaskHistory.add(task); 624 --index; 625 // Use same value for i. 626 } else { 627 ++i; 628 } 629 } 630 if (VALIDATE_TOKENS) { 631 validateAppTokensLocked(); 632 } 633 } 634 635 void minimalResumeActivityLocked(ActivityRecord r) { 636 r.state = ActivityState.RESUMED; 637 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 638 + " (starting new instance)"); 639 r.stopped = false; 640 mResumedActivity = r; 641 r.task.touchActiveTime(); 642 mService.addRecentTaskLocked(r.task); 643 completeResumeLocked(r); 644 mStackSupervisor.checkReadyForSleepLocked(); 645 setLaunchTime(r); 646 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 647 } 648 649 private void startLaunchTraces() { 650 if (mFullyDrawnStartTime != 0) { 651 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 652 } 653 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 654 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 655 } 656 657 private void stopFullyDrawnTraceIfNeeded() { 658 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 659 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 660 mFullyDrawnStartTime = 0; 661 } 662 } 663 664 void setLaunchTime(ActivityRecord r) { 665 if (r.displayStartTime == 0) { 666 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 667 if (mLaunchStartTime == 0) { 668 startLaunchTraces(); 669 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 670 } 671 } else if (mLaunchStartTime == 0) { 672 startLaunchTraces(); 673 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 674 } 675 } 676 677 void clearLaunchTime(ActivityRecord r) { 678 // Make sure that there is no activity waiting for this to launch. 679 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 680 r.displayStartTime = r.fullyDrawnStartTime = 0; 681 } else { 682 mStackSupervisor.removeTimeoutsForActivityLocked(r); 683 mStackSupervisor.scheduleIdleTimeoutLocked(r); 684 } 685 } 686 687 void awakeFromSleepingLocked() { 688 // Ensure activities are no longer sleeping. 689 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 690 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 691 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 692 activities.get(activityNdx).setSleeping(false); 693 } 694 } 695 } 696 697 /** 698 * @return true if something must be done before going to sleep. 699 */ 700 boolean checkReadyForSleepLocked() { 701 if (mResumedActivity != null) { 702 // Still have something resumed; can't sleep until it is paused. 703 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 704 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 705 startPausingLocked(false, true); 706 return true; 707 } 708 if (mPausingActivity != null) { 709 // Still waiting for something to pause; can't sleep yet. 710 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 711 return true; 712 } 713 714 return false; 715 } 716 717 void goToSleep() { 718 ensureActivitiesVisibleLocked(null, 0); 719 720 // Make sure any stopped but visible activities are now sleeping. 721 // This ensures that the activity's onStop() is called. 722 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 723 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 724 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 725 final ActivityRecord r = activities.get(activityNdx); 726 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 727 r.setSleeping(true); 728 } 729 } 730 } 731 } 732 733 /** 734 * This resets the saved state from the last screenshot, forcing a new screenshot to be taken 735 * again when requested. 736 */ 737 private void invalidateLastScreenshot() { 738 mLastScreenshotActivity = null; 739 if (mLastScreenshotBitmap != null) { 740 mLastScreenshotBitmap.recycle(); 741 } 742 mLastScreenshotBitmap = null; 743 } 744 745 public final Bitmap screenshotActivities(ActivityRecord who) { 746 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "screenshotActivities: " + who); 747 if (who.noDisplay) { 748 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tNo display"); 749 return null; 750 } 751 752 TaskRecord tr = who.task; 753 if (mService.getMostRecentTask() != tr || isHomeStack()) { 754 // This is an optimization -- since we never show Home or Recents within Recents itself, 755 // we can just go ahead and skip taking the screenshot if this is the home stack. In 756 // the case where the most recent task is not the task that was supplied, then the stack 757 // has changed, so invalidate the last screenshot(). 758 invalidateLastScreenshot(); 759 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tIs Home stack? " + isHomeStack()); 760 return null; 761 } 762 763 int w = mThumbnailWidth; 764 int h = mThumbnailHeight; 765 if (w > 0) { 766 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 767 || mLastScreenshotActivity.state == ActivityState.RESUMED 768 || mLastScreenshotBitmap.getWidth() != w 769 || mLastScreenshotBitmap.getHeight() != h) { 770 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tUpdating screenshot"); 771 mLastScreenshotActivity = who; 772 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 773 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 774 } 775 if (mLastScreenshotBitmap != null) { 776 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tReusing last screenshot"); 777 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 778 } 779 } 780 Slog.e(TAG, "Invalid thumbnail dimensions: " + w + "x" + h); 781 return null; 782 } 783 784 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 785 if (mPausingActivity != null) { 786 Slog.e(TAG, "Trying to pause when pause is already pending for " 787 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 788 } 789 ActivityRecord prev = mResumedActivity; 790 if (prev == null) { 791 Slog.e(TAG, "Trying to pause when nothing is resumed", 792 new RuntimeException("here").fillInStackTrace()); 793 mStackSupervisor.resumeTopActivitiesLocked(); 794 return; 795 } 796 797 if (mActivityContainer.mParentActivity == null) { 798 // Top level stack, not a child. Look for child stacks. 799 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 800 } 801 802 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 803 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 804 mResumedActivity = null; 805 mPausingActivity = prev; 806 mLastPausedActivity = prev; 807 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 808 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 809 prev.state = ActivityState.PAUSING; 810 prev.task.touchActiveTime(); 811 clearLaunchTime(prev); 812 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 813 if (next == null || next.noDisplay || next.task != prev.task) { 814 prev.updateThumbnail(screenshotActivities(prev), null); 815 } 816 stopFullyDrawnTraceIfNeeded(); 817 818 mService.updateCpuStats(); 819 820 if (prev.app != null && prev.app.thread != null) { 821 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 822 try { 823 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 824 prev.userId, System.identityHashCode(prev), 825 prev.shortComponentName); 826 mService.updateUsageStats(prev, false); 827 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 828 userLeaving, prev.configChangeFlags); 829 } catch (Exception e) { 830 // Ignore exception, if process died other code will cleanup. 831 Slog.w(TAG, "Exception thrown during pause", e); 832 mPausingActivity = null; 833 mLastPausedActivity = null; 834 mLastNoHistoryActivity = null; 835 } 836 } else { 837 mPausingActivity = null; 838 mLastPausedActivity = null; 839 mLastNoHistoryActivity = null; 840 } 841 842 // If we are not going to sleep, we want to ensure the device is 843 // awake until the next activity is started. 844 if (!mService.isSleepingOrShuttingDown()) { 845 mStackSupervisor.acquireLaunchWakelock(); 846 } 847 848 if (mPausingActivity != null) { 849 // Have the window manager pause its key dispatching until the new 850 // activity has started. If we're pausing the activity just because 851 // the screen is being turned off and the UI is sleeping, don't interrupt 852 // key dispatch; the same activity will pick it up again on wakeup. 853 if (!uiSleeping) { 854 prev.pauseKeyDispatchingLocked(); 855 } else { 856 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 857 } 858 859 // Schedule a pause timeout in case the app doesn't respond. 860 // We don't give it much time because this directly impacts the 861 // responsiveness seen by the user. 862 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 863 msg.obj = prev; 864 prev.pauseTime = SystemClock.uptimeMillis(); 865 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 866 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 867 } else { 868 // This activity failed to schedule the 869 // pause, so just treat it as being paused now. 870 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 871 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 872 } 873 } 874 875 final void activityPausedLocked(IBinder token, boolean timeout, 876 PersistableBundle persistentState) { 877 if (DEBUG_PAUSE) Slog.v( 878 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 879 880 final ActivityRecord r = isInStackLocked(token); 881 if (r != null) { 882 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 883 r.persistentState = persistentState; 884 if (mPausingActivity == r) { 885 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 886 + (timeout ? " (due to timeout)" : " (pause complete)")); 887 r.state = ActivityState.PAUSED; 888 completePauseLocked(); 889 } else { 890 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 891 r.userId, System.identityHashCode(r), r.shortComponentName, 892 mPausingActivity != null 893 ? mPausingActivity.shortComponentName : "(none)"); 894 } 895 } 896 } 897 898 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, 899 PersistableBundle persistentState, CharSequence description) { 900 if (r.state != ActivityState.STOPPING) { 901 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 902 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 903 return; 904 } 905 r.persistentState = persistentState; 906 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 907 if (icicle != null) { 908 // If icicle is null, this is happening due to a timeout, so we 909 // haven't really saved the state. 910 r.icicle = icicle; 911 r.haveState = true; 912 r.launchCount = 0; 913 r.updateThumbnail(null, description); 914 } 915 if (!r.stopped) { 916 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 917 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 918 r.stopped = true; 919 r.state = ActivityState.STOPPED; 920 if (r.finishing) { 921 r.clearOptionsLocked(); 922 } else { 923 if (r.configDestroy) { 924 destroyActivityLocked(r, true, false, "stop-config"); 925 mStackSupervisor.resumeTopActivitiesLocked(); 926 } else { 927 mStackSupervisor.updatePreviousProcessLocked(r); 928 } 929 } 930 } 931 } 932 933 private void completePauseLocked() { 934 ActivityRecord prev = mPausingActivity; 935 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 936 937 if (prev != null) { 938 if (prev.finishing) { 939 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 940 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 941 } else if (prev.app != null) { 942 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 943 if (prev.waitingVisible) { 944 prev.waitingVisible = false; 945 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 946 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 947 TAG, "Complete pause, no longer waiting: " + prev); 948 } 949 if (prev.configDestroy) { 950 // The previous is being paused because the configuration 951 // is changing, which means it is actually stopping... 952 // To juggle the fact that we are also starting a new 953 // instance right now, we need to first completely stop 954 // the current instance before starting the new one. 955 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 956 destroyActivityLocked(prev, true, false, "pause-config"); 957 } else { 958 mStackSupervisor.mStoppingActivities.add(prev); 959 if (mStackSupervisor.mStoppingActivities.size() > 3 || 960 prev.frontOfTask && mTaskHistory.size() <= 1) { 961 // If we already have a few activities waiting to stop, 962 // then give up on things going idle and start clearing 963 // them out. Or if r is the last of activity of the last task the stack 964 // will be empty and must be cleared immediately. 965 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 966 mStackSupervisor.scheduleIdleLocked(); 967 } else { 968 mStackSupervisor.checkReadyForSleepLocked(); 969 } 970 } 971 } else { 972 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 973 prev = null; 974 } 975 mPausingActivity = null; 976 } 977 978 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 979 if (!mService.isSleepingOrShuttingDown()) { 980 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 981 } else { 982 mStackSupervisor.checkReadyForSleepLocked(); 983 ActivityRecord top = topStack.topRunningActivityLocked(null); 984 if (top == null || (prev != null && top != prev)) { 985 // If there are no more activities available to run, 986 // do resume anyway to start something. Also if the top 987 // activity on the stack is not the just paused activity, 988 // we need to go ahead and resume it to ensure we complete 989 // an in-flight app switch. 990 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 991 } 992 } 993 994 if (prev != null) { 995 prev.resumeKeyDispatchingLocked(); 996 997 if (prev.app != null && prev.cpuTimeAtResume > 0 998 && mService.mBatteryStatsService.isOnBattery()) { 999 long diff; 1000 synchronized (mService.mProcessCpuThread) { 1001 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 1002 - prev.cpuTimeAtResume; 1003 } 1004 if (diff > 0) { 1005 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 1006 synchronized (bsi) { 1007 BatteryStatsImpl.Uid.Proc ps = 1008 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 1009 prev.info.packageName); 1010 if (ps != null) { 1011 ps.addForegroundTimeLocked(diff); 1012 } 1013 } 1014 } 1015 } 1016 prev.cpuTimeAtResume = 0; // reset it 1017 } 1018 } 1019 1020 /** 1021 * Once we know that we have asked an application to put an activity in 1022 * the resumed state (either by launching it or explicitly telling it), 1023 * this function updates the rest of our state to match that fact. 1024 */ 1025 private void completeResumeLocked(ActivityRecord next) { 1026 next.idle = false; 1027 next.results = null; 1028 next.newIntents = null; 1029 if (next.nowVisible) { 1030 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1031 mStackSupervisor.dismissKeyguard(); 1032 } 1033 1034 // schedule an idle timeout in case the app doesn't do it for us. 1035 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1036 1037 mStackSupervisor.reportResumedActivityLocked(next); 1038 1039 next.resumeKeyDispatchingLocked(); 1040 mNoAnimActivities.clear(); 1041 1042 // Mark the point when the activity is resuming 1043 // TODO: To be more accurate, the mark should be before the onCreate, 1044 // not after the onResume. But for subsequent starts, onResume is fine. 1045 if (next.app != null) { 1046 synchronized (mService.mProcessCpuThread) { 1047 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1048 } 1049 } else { 1050 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1051 } 1052 1053 // If we are resuming the activity that we had last screenshotted, then we know it will be 1054 // updated, so invalidate the last screenshot to ensure we take a fresh one when requested 1055 if (next == mLastScreenshotActivity) { 1056 invalidateLastScreenshot(); 1057 } 1058 } 1059 1060 /** 1061 * Determine if home should be visible below the passed record. 1062 * @param record activity we are querying for. 1063 * @return true if home is visible below the passed activity, false otherwise. 1064 */ 1065 boolean isActivityOverHome(ActivityRecord record) { 1066 // Start at record and go down, look for either home or a visible fullscreen activity. 1067 final TaskRecord recordTask = record.task; 1068 for (int taskNdx = mTaskHistory.indexOf(recordTask); taskNdx >= 0; --taskNdx) { 1069 TaskRecord task = mTaskHistory.get(taskNdx); 1070 final ArrayList<ActivityRecord> activities = task.mActivities; 1071 final int startNdx = 1072 task == recordTask ? activities.indexOf(record) : activities.size() - 1; 1073 for (int activityNdx = startNdx; activityNdx >= 0; --activityNdx) { 1074 final ActivityRecord r = activities.get(activityNdx); 1075 if (r.isHomeActivity()) { 1076 return true; 1077 } 1078 if (!r.finishing && r.fullscreen) { 1079 // Passed activity is over a fullscreen activity. 1080 return false; 1081 } 1082 } 1083 if (task.mOnTopOfHome) { 1084 // Got to the bottom of a task on top of home without finding a visible fullscreen 1085 // activity. Home is visible. 1086 return true; 1087 } 1088 } 1089 // Got to the bottom of this stack and still don't know. If this is over the home stack 1090 // then record is over home. May not work if we ever get more than two layers. 1091 return mStackSupervisor.isFrontStack(this); 1092 } 1093 1094 private void setVisibile(ActivityRecord r, boolean visible) { 1095 r.visible = visible; 1096 mWindowManager.setAppVisibility(r.appToken, visible); 1097 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1098 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1099 ActivityContainer container = containers.get(containerNdx); 1100 container.setVisible(visible); 1101 } 1102 } 1103 1104 // Checks if any of the stacks above this one has a fullscreen activity behind it. 1105 // If so, this stack is hidden, otherwise it is visible. 1106 private boolean isStackVisible() { 1107 if (!isAttached()) { 1108 return false; 1109 } 1110 1111 if (mStackSupervisor.isFrontStack(this)) { 1112 return true; 1113 } 1114 1115 /** 1116 * Start at the task above this one and go up, looking for a visible 1117 * fullscreen activity, or a translucent activity that requested the 1118 * wallpaper to be shown behind it. 1119 */ 1120 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) { 1121 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks(); 1122 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) { 1123 final ArrayList<ActivityRecord> activities = tasks.get(taskNdx).mActivities; 1124 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) { 1125 final ActivityRecord r = activities.get(activityNdx); 1126 1127 // Conditions for an activity to obscure the stack we're 1128 // examining: 1129 // 1. Not Finishing AND Visible AND: 1130 // 2. Either: 1131 // - Full Screen Activity OR 1132 // - On top of Home and our stack is NOT home 1133 if (!r.finishing && r.visible && (r.fullscreen || 1134 (!isHomeStack() && r.frontOfTask && tasks.get(taskNdx).mOnTopOfHome))) { 1135 return false; 1136 } 1137 } 1138 } 1139 } 1140 1141 return true; 1142 } 1143 1144 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1145 ActivityRecord r = topRunningActivityLocked(null); 1146 if (r != null) { 1147 ensureActivitiesVisibleLocked(r, starting, null, configChanges); 1148 } 1149 } 1150 1151 /** 1152 * Make sure that all activities that need to be visible (that is, they 1153 * currently can be seen by the user) actually are. 1154 */ 1155 final void ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1156 String onlyThisProcess, int configChanges) { 1157 if (DEBUG_VISBILITY) Slog.v( 1158 TAG, "ensureActivitiesVisible behind " + top 1159 + " configChanges=0x" + Integer.toHexString(configChanges)); 1160 1161 if (mTranslucentActivityWaiting != top) { 1162 mUndrawnActivitiesBelowTopTranslucent.clear(); 1163 if (mTranslucentActivityWaiting != null) { 1164 // Call the callback with a timeout indication. 1165 notifyActivityDrawnLocked(null); 1166 mTranslucentActivityWaiting = null; 1167 } 1168 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1169 } 1170 1171 // If the top activity is not fullscreen, then we need to 1172 // make sure any activities under it are now visible. 1173 boolean aboveTop = true; 1174 boolean behindFullscreen = !isStackVisible(); 1175 1176 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1177 final TaskRecord task = mTaskHistory.get(taskNdx); 1178 final ArrayList<ActivityRecord> activities = task.mActivities; 1179 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1180 final ActivityRecord r = activities.get(activityNdx); 1181 if (r.finishing) { 1182 continue; 1183 } 1184 if (aboveTop && r != top) { 1185 continue; 1186 } 1187 aboveTop = false; 1188 if (!behindFullscreen) { 1189 if (DEBUG_VISBILITY) Slog.v( 1190 TAG, "Make visible? " + r + " finishing=" + r.finishing 1191 + " state=" + r.state); 1192 1193 final boolean doThisProcess = onlyThisProcess == null 1194 || onlyThisProcess.equals(r.processName); 1195 1196 // First: if this is not the current activity being started, make 1197 // sure it matches the current configuration. 1198 if (r != starting && doThisProcess) { 1199 ensureActivityConfigurationLocked(r, 0); 1200 } 1201 1202 if (r.app == null || r.app.thread == null) { 1203 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1204 // This activity needs to be visible, but isn't even 1205 // running... get it started, but don't resume it 1206 // at this point. 1207 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1208 if (r != starting) { 1209 r.startFreezingScreenLocked(r.app, configChanges); 1210 } 1211 if (!r.visible) { 1212 if (DEBUG_VISBILITY) Slog.v( 1213 TAG, "Starting and making visible: " + r); 1214 setVisibile(r, true); 1215 } 1216 if (r != starting) { 1217 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1218 } 1219 } 1220 1221 } else if (r.visible) { 1222 // If this activity is already visible, then there is nothing 1223 // else to do here. 1224 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1225 r.stopFreezingScreenLocked(false); 1226 1227 } else if (onlyThisProcess == null) { 1228 // This activity is not currently visible, but is running. 1229 // Tell it to become visible. 1230 r.visible = true; 1231 if (r.state != ActivityState.RESUMED && r != starting) { 1232 // If this activity is paused, tell it 1233 // to now show its window. 1234 if (DEBUG_VISBILITY) Slog.v( 1235 TAG, "Making visible and scheduling visibility: " + r); 1236 try { 1237 if (mTranslucentActivityWaiting != null) { 1238 r.updateOptionsLocked(mReturningActivityOptions); 1239 mUndrawnActivitiesBelowTopTranslucent.add(r); 1240 } 1241 setVisibile(r, true); 1242 r.sleeping = false; 1243 r.app.pendingUiClean = true; 1244 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1245 r.stopFreezingScreenLocked(false); 1246 } catch (Exception e) { 1247 // Just skip on any failure; we'll make it 1248 // visible when it next restarts. 1249 Slog.w(TAG, "Exception thrown making visibile: " 1250 + r.intent.getComponent(), e); 1251 } 1252 } 1253 } 1254 1255 // Aggregate current change flags. 1256 configChanges |= r.configChangeFlags; 1257 1258 if (r.fullscreen) { 1259 // At this point, nothing else needs to be shown 1260 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1261 behindFullscreen = true; 1262 } else if (!isHomeStack() && r.frontOfTask && task.mOnTopOfHome) { 1263 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1264 behindFullscreen = true; 1265 } 1266 } else { 1267 if (DEBUG_VISBILITY) Slog.v( 1268 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1269 + " state=" + r.state 1270 + " behindFullscreen=" + behindFullscreen); 1271 // Now for any activities that aren't visible to the user, make 1272 // sure they no longer are keeping the screen frozen. 1273 if (r.visible) { 1274 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1275 try { 1276 setVisibile(r, false); 1277 switch (r.state) { 1278 case STOPPING: 1279 case STOPPED: 1280 if (r.app != null && r.app.thread != null) { 1281 if (DEBUG_VISBILITY) Slog.v( 1282 TAG, "Scheduling invisibility: " + r); 1283 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1284 } 1285 break; 1286 1287 case INITIALIZING: 1288 case RESUMED: 1289 case PAUSING: 1290 case PAUSED: 1291 // This case created for transitioning activities from 1292 // translucent to opaque {@link Activity#convertToOpaque}. 1293 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1294 mStackSupervisor.mStoppingActivities.add(r); 1295 } 1296 mStackSupervisor.scheduleIdleLocked(); 1297 break; 1298 1299 default: 1300 break; 1301 } 1302 } catch (Exception e) { 1303 // Just skip on any failure; we'll make it 1304 // visible when it next restarts. 1305 Slog.w(TAG, "Exception thrown making hidden: " 1306 + r.intent.getComponent(), e); 1307 } 1308 } else { 1309 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1310 } 1311 } 1312 } 1313 } 1314 } 1315 1316 void convertToTranslucent(ActivityRecord r, ActivityOptions options) { 1317 mTranslucentActivityWaiting = r; 1318 mUndrawnActivitiesBelowTopTranslucent.clear(); 1319 mReturningActivityOptions = options; 1320 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1321 } 1322 1323 /** 1324 * Called as activities below the top translucent activity are redrawn. When the last one is 1325 * redrawn notify the top activity by calling 1326 * {@link Activity#onTranslucentConversionComplete}. 1327 * 1328 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1329 * occurred and the activity will be notified immediately. 1330 */ 1331 void notifyActivityDrawnLocked(ActivityRecord r) { 1332 mActivityContainer.setDrawn(); 1333 if ((r == null) 1334 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1335 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1336 // The last undrawn activity below the top has just been drawn. If there is an 1337 // opaque activity at the top, notify it that it can become translucent safely now. 1338 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1339 mTranslucentActivityWaiting = null; 1340 mUndrawnActivitiesBelowTopTranslucent.clear(); 1341 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1342 1343 if (waitingActivity != null) { 1344 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1345 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1346 try { 1347 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1348 waitingActivity.appToken, r != null); 1349 } catch (RemoteException e) { 1350 } 1351 } 1352 } 1353 } 1354 } 1355 1356 /** If any activities below the top running one are in the INITIALIZING state and they have a 1357 * starting window displayed then remove that starting window. It is possible that the activity 1358 * in this state will never resumed in which case that starting window will be orphaned. */ 1359 void cancelInitializingActivities() { 1360 final ActivityRecord topActivity = topRunningActivityLocked(null); 1361 boolean aboveTop = true; 1362 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1363 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1364 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1365 final ActivityRecord r = activities.get(activityNdx); 1366 if (aboveTop) { 1367 if (r == topActivity) { 1368 aboveTop = false; 1369 } 1370 continue; 1371 } 1372 1373 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1374 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1375 r.mStartingWindowShown = false; 1376 mWindowManager.removeAppStartingWindow(r.appToken); 1377 } 1378 } 1379 } 1380 } 1381 1382 /** 1383 * Ensure that the top activity in the stack is resumed. 1384 * 1385 * @param prev The previously resumed activity, for when in the process 1386 * of pausing; can be null to call from elsewhere. 1387 * 1388 * @return Returns true if something is being resumed, or false if 1389 * nothing happened. 1390 */ 1391 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1392 return resumeTopActivityLocked(prev, null); 1393 } 1394 1395 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1396 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1397 1398 ActivityRecord parent = mActivityContainer.mParentActivity; 1399 if ((parent != null && parent.state != ActivityState.RESUMED) || 1400 !mActivityContainer.isAttached()) { 1401 // Do not resume this stack if its parent is not resumed. 1402 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1403 return false; 1404 } 1405 1406 cancelInitializingActivities(); 1407 1408 // Find the first activity that is not finishing. 1409 ActivityRecord next = topRunningActivityLocked(null); 1410 1411 // Remember how we'll process this pause/resume situation, and ensure 1412 // that the state is reset however we wind up proceeding. 1413 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1414 mStackSupervisor.mUserLeaving = false; 1415 1416 if (next == null) { 1417 // There are no more activities! Let's just start up the 1418 // Launcher... 1419 ActivityOptions.abort(options); 1420 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1421 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1422 // Only resume home if on home display 1423 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1424 } 1425 1426 next.delayedResume = false; 1427 1428 // If the top activity is the resumed one, nothing to do. 1429 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1430 mStackSupervisor.allResumedActivitiesComplete()) { 1431 // Make sure we have executed any pending transitions, since there 1432 // should be nothing left to do at this point. 1433 mWindowManager.executeAppTransition(); 1434 mNoAnimActivities.clear(); 1435 ActivityOptions.abort(options); 1436 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1437 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1438 return false; 1439 } 1440 1441 final TaskRecord nextTask = next.task; 1442 final TaskRecord prevTask = prev != null ? prev.task : null; 1443 if (prevTask != null && prevTask.stack == this && 1444 prevTask.mOnTopOfHome && prev.finishing && prev.frontOfTask) { 1445 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1446 if (prevTask == nextTask) { 1447 prevTask.setFrontOfTask(); 1448 } else if (prevTask != topTask()) { 1449 // This task is going away but it was supposed to return to the home task. 1450 // Now the task above it has to return to the home task instead. 1451 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1452 mTaskHistory.get(taskNdx).mOnTopOfHome = true; 1453 } else { 1454 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1455 "resumeTopActivityLocked: Launching home next"); 1456 // Only resume home if on home display 1457 return isOnHomeDisplay() && mStackSupervisor.resumeHomeActivity(prev); 1458 } 1459 } 1460 1461 // If we are sleeping, and there is no resumed activity, and the top 1462 // activity is paused, well that is the state we want. 1463 if (mService.isSleepingOrShuttingDown() 1464 && mLastPausedActivity == next 1465 && mStackSupervisor.allPausedActivitiesComplete()) { 1466 // Make sure we have executed any pending transitions, since there 1467 // should be nothing left to do at this point. 1468 mWindowManager.executeAppTransition(); 1469 mNoAnimActivities.clear(); 1470 ActivityOptions.abort(options); 1471 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1472 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1473 return false; 1474 } 1475 1476 // Make sure that the user who owns this activity is started. If not, 1477 // we will just leave it as is because someone should be bringing 1478 // another user's activities to the top of the stack. 1479 if (mService.mStartedUsers.get(next.userId) == null) { 1480 Slog.w(TAG, "Skipping resume of top activity " + next 1481 + ": user " + next.userId + " is stopped"); 1482 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1483 return false; 1484 } 1485 1486 // The activity may be waiting for stop, but that is no longer 1487 // appropriate for it. 1488 mStackSupervisor.mStoppingActivities.remove(next); 1489 mStackSupervisor.mGoingToSleepActivities.remove(next); 1490 next.sleeping = false; 1491 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1492 1493 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1494 1495 // If we are currently pausing an activity, then don't do anything 1496 // until that is done. 1497 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1498 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1499 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1500 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1501 return false; 1502 } 1503 1504 // Okay we are now going to start a switch, to 'next'. We may first 1505 // have to pause the current activity, but this is an important point 1506 // where we have decided to go to 'next' so keep track of that. 1507 // XXX "App Redirected" dialog is getting too many false positives 1508 // at this point, so turn off for now. 1509 if (false) { 1510 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1511 long now = SystemClock.uptimeMillis(); 1512 final boolean inTime = mLastStartedActivity.startTime != 0 1513 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1514 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1515 final int nextUid = next.info.applicationInfo.uid; 1516 if (inTime && lastUid != nextUid 1517 && lastUid != next.launchedFromUid 1518 && mService.checkPermission( 1519 android.Manifest.permission.STOP_APP_SWITCHES, 1520 -1, next.launchedFromUid) 1521 != PackageManager.PERMISSION_GRANTED) { 1522 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1523 } else { 1524 next.startTime = now; 1525 mLastStartedActivity = next; 1526 } 1527 } else { 1528 next.startTime = SystemClock.uptimeMillis(); 1529 mLastStartedActivity = next; 1530 } 1531 } 1532 1533 // We need to start pausing the current activity so the top one 1534 // can be resumed... 1535 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1536 if (mResumedActivity != null) { 1537 pausing = true; 1538 startPausingLocked(userLeaving, false); 1539 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1540 } 1541 if (pausing) { 1542 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1543 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1544 // At this point we want to put the upcoming activity's process 1545 // at the top of the LRU list, since we know we will be needing it 1546 // very soon and it would be a waste to let it get killed if it 1547 // happens to be sitting towards the end. 1548 if (next.app != null && next.app.thread != null) { 1549 // No reason to do full oom adj update here; we'll let that 1550 // happen whenever it needs to later. 1551 mService.updateLruProcessLocked(next.app, true, null); 1552 } 1553 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1554 return true; 1555 } 1556 1557 // If the most recent activity was noHistory but was only stopped rather 1558 // than stopped+finished because the device went to sleep, we need to make 1559 // sure to finish it as we're making a new activity topmost. 1560 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1561 !mLastNoHistoryActivity.finishing) { 1562 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1563 " on new resume"); 1564 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1565 null, "no-history", false); 1566 mLastNoHistoryActivity = null; 1567 } 1568 1569 if (prev != null && prev != next) { 1570 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1571 prev.waitingVisible = true; 1572 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1573 if (DEBUG_SWITCH) Slog.v( 1574 TAG, "Resuming top, waiting visible to hide: " + prev); 1575 } else { 1576 // The next activity is already visible, so hide the previous 1577 // activity's windows right now so we can show the new one ASAP. 1578 // We only do this if the previous is finishing, which should mean 1579 // it is on top of the one being resumed so hiding it quickly 1580 // is good. Otherwise, we want to do the normal route of allowing 1581 // the resumed activity to be shown so we can decide if the 1582 // previous should actually be hidden depending on whether the 1583 // new one is found to be full-screen or not. 1584 if (prev.finishing) { 1585 mWindowManager.setAppVisibility(prev.appToken, false); 1586 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1587 + prev + ", waitingVisible=" 1588 + (prev != null ? prev.waitingVisible : null) 1589 + ", nowVisible=" + next.nowVisible); 1590 } else { 1591 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1592 + prev + ", waitingVisible=" 1593 + (prev != null ? prev.waitingVisible : null) 1594 + ", nowVisible=" + next.nowVisible); 1595 } 1596 } 1597 } 1598 1599 // Launching this app's activity, make sure the app is no longer 1600 // considered stopped. 1601 try { 1602 AppGlobals.getPackageManager().setPackageStoppedState( 1603 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1604 } catch (RemoteException e1) { 1605 } catch (IllegalArgumentException e) { 1606 Slog.w(TAG, "Failed trying to unstop package " 1607 + next.packageName + ": " + e); 1608 } 1609 1610 // We are starting up the next activity, so tell the window manager 1611 // that the previous one will be hidden soon. This way it can know 1612 // to ignore it when computing the desired screen orientation. 1613 boolean anim = true; 1614 if (prev != null) { 1615 if (prev.finishing) { 1616 if (DEBUG_TRANSITION) Slog.v(TAG, 1617 "Prepare close transition: prev=" + prev); 1618 if (mNoAnimActivities.contains(prev)) { 1619 anim = false; 1620 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1621 } else { 1622 mWindowManager.prepareAppTransition(prev.task == next.task 1623 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1624 : AppTransition.TRANSIT_TASK_CLOSE, false); 1625 } 1626 mWindowManager.setAppWillBeHidden(prev.appToken); 1627 mWindowManager.setAppVisibility(prev.appToken, false); 1628 } else { 1629 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1630 if (mNoAnimActivities.contains(next)) { 1631 anim = false; 1632 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1633 } else { 1634 mWindowManager.prepareAppTransition(prev.task == next.task 1635 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1636 : AppTransition.TRANSIT_TASK_OPEN, false); 1637 } 1638 } 1639 if (false) { 1640 mWindowManager.setAppWillBeHidden(prev.appToken); 1641 mWindowManager.setAppVisibility(prev.appToken, false); 1642 } 1643 } else { 1644 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1645 if (mNoAnimActivities.contains(next)) { 1646 anim = false; 1647 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1648 } else { 1649 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1650 } 1651 } 1652 1653 Bundle resumeAnimOptions = null; 1654 if (anim) { 1655 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1656 if (opts != null) { 1657 resumeAnimOptions = opts.toBundle(); 1658 } 1659 next.applyOptionsLocked(); 1660 } else { 1661 next.clearOptionsLocked(); 1662 } 1663 1664 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1665 if (next.app != null && next.app.thread != null) { 1666 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1667 1668 // This activity is now becoming visible. 1669 mWindowManager.setAppVisibility(next.appToken, true); 1670 1671 // schedule launch ticks to collect information about slow apps. 1672 next.startLaunchTickingLocked(); 1673 1674 ActivityRecord lastResumedActivity = 1675 lastStack == null ? null :lastStack.mResumedActivity; 1676 ActivityState lastState = next.state; 1677 1678 mService.updateCpuStats(); 1679 1680 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1681 next.state = ActivityState.RESUMED; 1682 mResumedActivity = next; 1683 next.task.touchActiveTime(); 1684 mService.addRecentTaskLocked(next.task); 1685 mService.updateLruProcessLocked(next.app, true, null); 1686 updateLRUListLocked(next); 1687 mService.updateOomAdjLocked(); 1688 1689 // Have the window manager re-evaluate the orientation of 1690 // the screen based on the new activity order. 1691 boolean notUpdated = true; 1692 if (mStackSupervisor.isFrontStack(this)) { 1693 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1694 mService.mConfiguration, 1695 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1696 if (config != null) { 1697 next.frozenBeforeDestroy = true; 1698 } 1699 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1700 } 1701 1702 if (notUpdated) { 1703 // The configuration update wasn't able to keep the existing 1704 // instance of the activity, and instead started a new one. 1705 // We should be all done, but let's just make sure our activity 1706 // is still at the top and schedule another run if something 1707 // weird happened. 1708 ActivityRecord nextNext = topRunningActivityLocked(null); 1709 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1710 "Activity config changed during resume: " + next 1711 + ", new next: " + nextNext); 1712 if (nextNext != next) { 1713 // Do over! 1714 mStackSupervisor.scheduleResumeTopActivities(); 1715 } 1716 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1717 mNoAnimActivities.clear(); 1718 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1719 return true; 1720 } 1721 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1722 return false; 1723 } 1724 1725 try { 1726 // Deliver all pending results. 1727 ArrayList<ResultInfo> a = next.results; 1728 if (a != null) { 1729 final int N = a.size(); 1730 if (!next.finishing && N > 0) { 1731 if (DEBUG_RESULTS) Slog.v( 1732 TAG, "Delivering results to " + next 1733 + ": " + a); 1734 next.app.thread.scheduleSendResult(next.appToken, a); 1735 } 1736 } 1737 1738 if (next.newIntents != null) { 1739 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1740 } 1741 1742 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1743 next.userId, System.identityHashCode(next), 1744 next.task.taskId, next.shortComponentName); 1745 1746 next.sleeping = false; 1747 mService.showAskCompatModeDialogLocked(next); 1748 next.app.pendingUiClean = true; 1749 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1750 next.clearOptionsLocked(); 1751 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1752 mService.isNextTransitionForward(), resumeAnimOptions); 1753 1754 mStackSupervisor.checkReadyForSleepLocked(); 1755 1756 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1757 } catch (Exception e) { 1758 // Whoops, need to restart this activity! 1759 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1760 + lastState + ": " + next); 1761 next.state = lastState; 1762 if (lastStack != null) { 1763 lastStack.mResumedActivity = lastResumedActivity; 1764 } 1765 Slog.i(TAG, "Restarting because process died: " + next); 1766 if (!next.hasBeenLaunched) { 1767 next.hasBeenLaunched = true; 1768 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1769 mStackSupervisor.isFrontStack(lastStack)) { 1770 mWindowManager.setAppStartingWindow( 1771 next.appToken, next.packageName, next.theme, 1772 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1773 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1774 next.windowFlags, null, true); 1775 } 1776 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1777 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1778 return true; 1779 } 1780 1781 // From this point on, if something goes wrong there is no way 1782 // to recover the activity. 1783 try { 1784 next.visible = true; 1785 completeResumeLocked(next); 1786 } catch (Exception e) { 1787 // If any exception gets thrown, toss away this 1788 // activity and try the next one. 1789 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1790 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1791 "resume-exception", true); 1792 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1793 return true; 1794 } 1795 next.stopped = false; 1796 1797 } else { 1798 // Whoops, need to restart this activity! 1799 if (!next.hasBeenLaunched) { 1800 next.hasBeenLaunched = true; 1801 } else { 1802 if (SHOW_APP_STARTING_PREVIEW) { 1803 mWindowManager.setAppStartingWindow( 1804 next.appToken, next.packageName, next.theme, 1805 mService.compatibilityInfoForPackageLocked( 1806 next.info.applicationInfo), 1807 next.nonLocalizedLabel, 1808 next.labelRes, next.icon, next.logo, next.windowFlags, 1809 null, true); 1810 } 1811 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1812 } 1813 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1814 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1815 } 1816 1817 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1818 return true; 1819 } 1820 1821 private void insertTaskAtTop(TaskRecord task) { 1822 // If this is being moved to the top by another activity or being launched from the home 1823 // activity, set mOnTopOfHome accordingly. 1824 if (isOnHomeDisplay()) { 1825 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1826 final boolean fromHome = lastStack.isHomeStack(); 1827 if (!isHomeStack() && (fromHome || topTask() != task)) { 1828 task.mOnTopOfHome = fromHome; 1829 } 1830 } else { 1831 task.mOnTopOfHome = false; 1832 } 1833 1834 mTaskHistory.remove(task); 1835 // Now put task at top. 1836 int stackNdx = mTaskHistory.size(); 1837 if (!isCurrentProfileLocked(task.userId)) { 1838 // Put non-current user tasks below current user tasks. 1839 while (--stackNdx >= 0) { 1840 if (!isCurrentProfileLocked(mTaskHistory.get(stackNdx).userId)) { 1841 break; 1842 } 1843 } 1844 ++stackNdx; 1845 } 1846 mTaskHistory.add(stackNdx, task); 1847 } 1848 1849 final void startActivityLocked(ActivityRecord r, boolean newTask, 1850 boolean doResume, boolean keepCurTransition, Bundle options) { 1851 TaskRecord rTask = r.task; 1852 final int taskId = rTask.taskId; 1853 if (taskForIdLocked(taskId) == null || newTask) { 1854 // Last activity in task had been removed or ActivityManagerService is reusing task. 1855 // Insert or replace. 1856 // Might not even be in. 1857 insertTaskAtTop(rTask); 1858 mWindowManager.moveTaskToTop(taskId); 1859 } 1860 TaskRecord task = null; 1861 if (!newTask) { 1862 // If starting in an existing task, find where that is... 1863 boolean startIt = true; 1864 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1865 task = mTaskHistory.get(taskNdx); 1866 if (task == r.task) { 1867 // Here it is! Now, if this is not yet visible to the 1868 // user, then just add it without starting; it will 1869 // get started when the user navigates back to it. 1870 if (!startIt) { 1871 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1872 + task, new RuntimeException("here").fillInStackTrace()); 1873 task.addActivityToTop(r); 1874 r.putInHistory(); 1875 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1876 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1877 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1878 r.userId, r.info.configChanges); 1879 if (VALIDATE_TOKENS) { 1880 validateAppTokensLocked(); 1881 } 1882 ActivityOptions.abort(options); 1883 return; 1884 } 1885 break; 1886 } else if (task.numFullscreen > 0) { 1887 startIt = false; 1888 } 1889 } 1890 } 1891 1892 // Place a new activity at top of stack, so it is next to interact 1893 // with the user. 1894 1895 // If we are not placing the new activity frontmost, we do not want 1896 // to deliver the onUserLeaving callback to the actual frontmost 1897 // activity 1898 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1899 mStackSupervisor.mUserLeaving = false; 1900 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1901 "startActivity() behind front, mUserLeaving=false"); 1902 } 1903 1904 task = r.task; 1905 1906 // Slot the activity into the history stack and proceed 1907 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1908 new RuntimeException("here").fillInStackTrace()); 1909 task.addActivityToTop(r); 1910 task.setFrontOfTask(); 1911 1912 r.putInHistory(); 1913 if (!isHomeStack() || numActivities() > 0) { 1914 // We want to show the starting preview window if we are 1915 // switching to a new task, or the next activity's process is 1916 // not currently running. 1917 boolean showStartingIcon = newTask; 1918 ProcessRecord proc = r.app; 1919 if (proc == null) { 1920 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1921 } 1922 if (proc == null || proc.thread == null) { 1923 showStartingIcon = true; 1924 } 1925 if (DEBUG_TRANSITION) Slog.v(TAG, 1926 "Prepare open transition: starting " + r); 1927 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1928 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1929 mNoAnimActivities.add(r); 1930 } else { 1931 mWindowManager.prepareAppTransition(newTask 1932 ? AppTransition.TRANSIT_TASK_OPEN 1933 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1934 mNoAnimActivities.remove(r); 1935 } 1936 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1937 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1938 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1939 r.info.configChanges); 1940 boolean doShow = true; 1941 if (newTask) { 1942 // Even though this activity is starting fresh, we still need 1943 // to reset it to make sure we apply affinities to move any 1944 // existing activities from other tasks in to it. 1945 // If the caller has requested that the target task be 1946 // reset, then do so. 1947 if ((r.intent.getFlags() 1948 & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1949 resetTaskIfNeededLocked(r, r); 1950 doShow = topRunningNonDelayedActivityLocked(null) == r; 1951 } 1952 } 1953 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1954 // Figure out if we are transitioning from another activity that is 1955 // "has the same starting icon" as the next one. This allows the 1956 // window manager to keep the previous window it had previously 1957 // created, if it still had one. 1958 ActivityRecord prev = mResumedActivity; 1959 if (prev != null) { 1960 // We don't want to reuse the previous starting preview if: 1961 // (1) The current activity is in a different task. 1962 if (prev.task != r.task) { 1963 prev = null; 1964 } 1965 // (2) The current activity is already displayed. 1966 else if (prev.nowVisible) { 1967 prev = null; 1968 } 1969 } 1970 mWindowManager.setAppStartingWindow( 1971 r.appToken, r.packageName, r.theme, 1972 mService.compatibilityInfoForPackageLocked( 1973 r.info.applicationInfo), r.nonLocalizedLabel, 1974 r.labelRes, r.icon, r.logo, r.windowFlags, 1975 prev != null ? prev.appToken : null, showStartingIcon); 1976 r.mStartingWindowShown = true; 1977 } 1978 } else { 1979 // If this is the first activity, don't do any fancy animations, 1980 // because there is nothing for it to animate on top of. 1981 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1982 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1983 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1984 r.info.configChanges); 1985 ActivityOptions.abort(options); 1986 options = null; 1987 } 1988 if (VALIDATE_TOKENS) { 1989 validateAppTokensLocked(); 1990 } 1991 1992 if (doResume) { 1993 mStackSupervisor.resumeTopActivitiesLocked(this, r, options); 1994 } 1995 } 1996 1997 final void validateAppTokensLocked() { 1998 mValidateAppTokens.clear(); 1999 mValidateAppTokens.ensureCapacity(numActivities()); 2000 final int numTasks = mTaskHistory.size(); 2001 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 2002 TaskRecord task = mTaskHistory.get(taskNdx); 2003 final ArrayList<ActivityRecord> activities = task.mActivities; 2004 if (activities.isEmpty()) { 2005 continue; 2006 } 2007 TaskGroup group = new TaskGroup(); 2008 group.taskId = task.taskId; 2009 mValidateAppTokens.add(group); 2010 final int numActivities = activities.size(); 2011 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 2012 final ActivityRecord r = activities.get(activityNdx); 2013 group.tokens.add(r.appToken); 2014 } 2015 } 2016 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 2017 } 2018 2019 /** 2020 * Perform a reset of the given task, if needed as part of launching it. 2021 * Returns the new HistoryRecord at the top of the task. 2022 */ 2023 /** 2024 * Helper method for #resetTaskIfNeededLocked. 2025 * We are inside of the task being reset... we'll either finish this activity, push it out 2026 * for another task, or leave it as-is. 2027 * @param task The task containing the Activity (taskTop) that might be reset. 2028 * @param forceReset 2029 * @return An ActivityOptions that needs to be processed. 2030 */ 2031 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 2032 ActivityOptions topOptions = null; 2033 2034 int replyChainEnd = -1; 2035 boolean canMoveOptions = true; 2036 2037 // We only do this for activities that are not the root of the task (since if we finish 2038 // the root, we may no longer have the task!). 2039 final ArrayList<ActivityRecord> activities = task.mActivities; 2040 final int numActivities = activities.size(); 2041 for (int i = numActivities - 1; i > 0; --i ) { 2042 ActivityRecord target = activities.get(i); 2043 2044 final int flags = target.info.flags; 2045 final boolean finishOnTaskLaunch = 2046 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2047 final boolean allowTaskReparenting = 2048 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2049 final boolean clearWhenTaskReset = 2050 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2051 2052 if (!finishOnTaskLaunch 2053 && !clearWhenTaskReset 2054 && target.resultTo != null) { 2055 // If this activity is sending a reply to a previous 2056 // activity, we can't do anything with it now until 2057 // we reach the start of the reply chain. 2058 // XXX note that we are assuming the result is always 2059 // to the previous activity, which is almost always 2060 // the case but we really shouldn't count on. 2061 if (replyChainEnd < 0) { 2062 replyChainEnd = i; 2063 } 2064 } else if (!finishOnTaskLaunch 2065 && !clearWhenTaskReset 2066 && allowTaskReparenting 2067 && target.taskAffinity != null 2068 && !target.taskAffinity.equals(task.affinity)) { 2069 // If this activity has an affinity for another 2070 // task, then we need to move it out of here. We will 2071 // move it as far out of the way as possible, to the 2072 // bottom of the activity stack. This also keeps it 2073 // correctly ordered with any activities we previously 2074 // moved. 2075 final ThumbnailHolder newThumbHolder; 2076 final TaskRecord targetTask; 2077 final ActivityRecord bottom = 2078 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2079 mTaskHistory.get(0).mActivities.get(0) : null; 2080 if (bottom != null && target.taskAffinity != null 2081 && target.taskAffinity.equals(bottom.task.affinity)) { 2082 // If the activity currently at the bottom has the 2083 // same task affinity as the one we are moving, 2084 // then merge it into the same task. 2085 targetTask = bottom.task; 2086 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 2087 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2088 + " out to bottom task " + bottom.task); 2089 } else { 2090 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2091 null, null, null, false); 2092 newThumbHolder = targetTask; 2093 targetTask.affinityIntent = target.intent; 2094 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2095 + " out to new task " + target.task); 2096 } 2097 2098 target.thumbHolder = newThumbHolder; 2099 2100 final int targetTaskId = targetTask.taskId; 2101 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2102 2103 boolean noOptions = canMoveOptions; 2104 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2105 for (int srcPos = start; srcPos >= i; --srcPos) { 2106 final ActivityRecord p = activities.get(srcPos); 2107 if (p.finishing) { 2108 continue; 2109 } 2110 2111 ThumbnailHolder curThumbHolder = p.thumbHolder; 2112 canMoveOptions = false; 2113 if (noOptions && topOptions == null) { 2114 topOptions = p.takeOptionsLocked(); 2115 if (topOptions != null) { 2116 noOptions = false; 2117 } 2118 } 2119 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2120 + task + " adding to task=" + targetTask 2121 + " Callers=" + Debug.getCallers(4)); 2122 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2123 + " out to target's task " + target.task); 2124 p.setTask(targetTask, curThumbHolder, false); 2125 targetTask.addActivityAtBottom(p); 2126 2127 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2128 } 2129 2130 mWindowManager.moveTaskToBottom(targetTaskId); 2131 if (VALIDATE_TOKENS) { 2132 validateAppTokensLocked(); 2133 } 2134 2135 replyChainEnd = -1; 2136 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2137 // If the activity should just be removed -- either 2138 // because it asks for it, or the task should be 2139 // cleared -- then finish it and anything that is 2140 // part of its reply chain. 2141 int end; 2142 if (clearWhenTaskReset) { 2143 // In this case, we want to finish this activity 2144 // and everything above it, so be sneaky and pretend 2145 // like these are all in the reply chain. 2146 end = numActivities - 1; 2147 } else if (replyChainEnd < 0) { 2148 end = i; 2149 } else { 2150 end = replyChainEnd; 2151 } 2152 boolean noOptions = canMoveOptions; 2153 for (int srcPos = i; srcPos <= end; srcPos++) { 2154 ActivityRecord p = activities.get(srcPos); 2155 if (p.finishing) { 2156 continue; 2157 } 2158 canMoveOptions = false; 2159 if (noOptions && topOptions == null) { 2160 topOptions = p.takeOptionsLocked(); 2161 if (topOptions != null) { 2162 noOptions = false; 2163 } 2164 } 2165 if (DEBUG_TASKS) Slog.w(TAG, 2166 "resetTaskIntendedTask: calling finishActivity on " + p); 2167 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2168 end--; 2169 srcPos--; 2170 } 2171 } 2172 replyChainEnd = -1; 2173 } else { 2174 // If we were in the middle of a chain, well the 2175 // activity that started it all doesn't want anything 2176 // special, so leave it all as-is. 2177 replyChainEnd = -1; 2178 } 2179 } 2180 2181 return topOptions; 2182 } 2183 2184 /** 2185 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2186 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2187 * @param affinityTask The task we are looking for an affinity to. 2188 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2189 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2190 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2191 */ 2192 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2193 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2194 int replyChainEnd = -1; 2195 final int taskId = task.taskId; 2196 final String taskAffinity = task.affinity; 2197 2198 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2199 final int numActivities = activities.size(); 2200 // Do not operate on the root Activity. 2201 for (int i = numActivities - 1; i > 0; --i) { 2202 ActivityRecord target = activities.get(i); 2203 2204 final int flags = target.info.flags; 2205 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2206 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2207 2208 if (target.resultTo != null) { 2209 // If this activity is sending a reply to a previous 2210 // activity, we can't do anything with it now until 2211 // we reach the start of the reply chain. 2212 // XXX note that we are assuming the result is always 2213 // to the previous activity, which is almost always 2214 // the case but we really shouldn't count on. 2215 if (replyChainEnd < 0) { 2216 replyChainEnd = i; 2217 } 2218 } else if (topTaskIsHigher 2219 && allowTaskReparenting 2220 && taskAffinity != null 2221 && taskAffinity.equals(target.taskAffinity)) { 2222 // This activity has an affinity for our task. Either remove it if we are 2223 // clearing or move it over to our task. Note that 2224 // we currently punt on the case where we are resetting a 2225 // task that is not at the top but who has activities above 2226 // with an affinity to it... this is really not a normal 2227 // case, and we will need to later pull that task to the front 2228 // and usually at that point we will do the reset and pick 2229 // up those remaining activities. (This only happens if 2230 // someone starts an activity in a new task from an activity 2231 // in a task that is not currently on top.) 2232 if (forceReset || finishOnTaskLaunch) { 2233 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2234 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2235 for (int srcPos = start; srcPos >= i; --srcPos) { 2236 final ActivityRecord p = activities.get(srcPos); 2237 if (p.finishing) { 2238 continue; 2239 } 2240 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2241 } 2242 } else { 2243 if (taskInsertionPoint < 0) { 2244 taskInsertionPoint = task.mActivities.size(); 2245 2246 } 2247 2248 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2249 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2250 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2251 for (int srcPos = start; srcPos >= i; --srcPos) { 2252 final ActivityRecord p = activities.get(srcPos); 2253 p.setTask(task, null, false); 2254 task.addActivityAtIndex(taskInsertionPoint, p); 2255 2256 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2257 + " to stack at " + task, 2258 new RuntimeException("here").fillInStackTrace()); 2259 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2260 + " in to resetting task " + task); 2261 mWindowManager.setAppGroupId(p.appToken, taskId); 2262 } 2263 mWindowManager.moveTaskToTop(taskId); 2264 if (VALIDATE_TOKENS) { 2265 validateAppTokensLocked(); 2266 } 2267 2268 // Now we've moved it in to place... but what if this is 2269 // a singleTop activity and we have put it on top of another 2270 // instance of the same activity? Then we drop the instance 2271 // below so it remains singleTop. 2272 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2273 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2274 int targetNdx = taskActivities.indexOf(target); 2275 if (targetNdx > 0) { 2276 ActivityRecord p = taskActivities.get(targetNdx - 1); 2277 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2278 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2279 false); 2280 } 2281 } 2282 } 2283 } 2284 2285 replyChainEnd = -1; 2286 } 2287 } 2288 return taskInsertionPoint; 2289 } 2290 2291 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2292 ActivityRecord newActivity) { 2293 boolean forceReset = 2294 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2295 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2296 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2297 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2298 forceReset = true; 2299 } 2300 } 2301 2302 final TaskRecord task = taskTop.task; 2303 2304 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2305 * for remaining tasks. Used for later tasks to reparent to task. */ 2306 boolean taskFound = false; 2307 2308 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2309 ActivityOptions topOptions = null; 2310 2311 // Preserve the location for reparenting in the new task. 2312 int reparentInsertionPoint = -1; 2313 2314 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2315 final TaskRecord targetTask = mTaskHistory.get(i); 2316 2317 if (targetTask == task) { 2318 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2319 taskFound = true; 2320 } else { 2321 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2322 taskFound, forceReset, reparentInsertionPoint); 2323 } 2324 } 2325 2326 int taskNdx = mTaskHistory.indexOf(task); 2327 do { 2328 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2329 } while (taskTop == null && taskNdx >= 0); 2330 2331 if (topOptions != null) { 2332 // If we got some ActivityOptions from an activity on top that 2333 // was removed from the task, propagate them to the new real top. 2334 if (taskTop != null) { 2335 taskTop.updateOptionsLocked(topOptions); 2336 } else { 2337 topOptions.abort(); 2338 } 2339 } 2340 2341 return taskTop; 2342 } 2343 2344 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2345 String resultWho, int requestCode, int resultCode, Intent data) { 2346 2347 if (callingUid > 0) { 2348 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2349 data, r.getUriPermissionsLocked()); 2350 } 2351 2352 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2353 + " : who=" + resultWho + " req=" + requestCode 2354 + " res=" + resultCode + " data=" + data); 2355 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2356 try { 2357 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2358 list.add(new ResultInfo(resultWho, requestCode, 2359 resultCode, data)); 2360 r.app.thread.scheduleSendResult(r.appToken, list); 2361 return; 2362 } catch (Exception e) { 2363 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2364 } 2365 } 2366 2367 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2368 } 2369 2370 private void adjustFocusedActivityLocked(ActivityRecord r) { 2371 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2372 ActivityRecord next = topRunningActivityLocked(null); 2373 if (next != r) { 2374 final TaskRecord task = r.task; 2375 if (r.frontOfTask && task == topTask() && task.mOnTopOfHome) { 2376 mStackSupervisor.moveHomeToTop(); 2377 } 2378 } 2379 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2380 if (top != null) { 2381 mService.setFocusedActivityLocked(top); 2382 } 2383 } 2384 } 2385 2386 final void stopActivityLocked(ActivityRecord r) { 2387 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2388 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2389 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2390 if (!r.finishing) { 2391 if (!mService.isSleeping()) { 2392 if (DEBUG_STATES) { 2393 Slog.d(TAG, "no-history finish of " + r); 2394 } 2395 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2396 "no-history", false); 2397 } else { 2398 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2399 + " on stop because we're just sleeping"); 2400 } 2401 } 2402 } 2403 2404 if (r.app != null && r.app.thread != null) { 2405 adjustFocusedActivityLocked(r); 2406 r.resumeKeyDispatchingLocked(); 2407 try { 2408 r.stopped = false; 2409 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2410 + " (stop requested)"); 2411 r.state = ActivityState.STOPPING; 2412 if (DEBUG_VISBILITY) Slog.v( 2413 TAG, "Stopping visible=" + r.visible + " for " + r); 2414 if (!r.visible) { 2415 mWindowManager.setAppVisibility(r.appToken, false); 2416 } 2417 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2418 if (mService.isSleepingOrShuttingDown()) { 2419 r.setSleeping(true); 2420 } 2421 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2422 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2423 } catch (Exception e) { 2424 // Maybe just ignore exceptions here... if the process 2425 // has crashed, our death notification will clean things 2426 // up. 2427 Slog.w(TAG, "Exception thrown during pause", e); 2428 // Just in case, assume it to be stopped. 2429 r.stopped = true; 2430 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2431 r.state = ActivityState.STOPPED; 2432 if (r.configDestroy) { 2433 destroyActivityLocked(r, true, false, "stop-except"); 2434 } 2435 } 2436 } 2437 } 2438 2439 /** 2440 * @return Returns true if the activity is being finished, false if for 2441 * some reason it is being left as-is. 2442 */ 2443 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2444 Intent resultData, String reason, boolean oomAdj) { 2445 ActivityRecord r = isInStackLocked(token); 2446 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2447 TAG, "Finishing activity token=" + token + " r=" 2448 + ", result=" + resultCode + ", data=" + resultData 2449 + ", reason=" + reason); 2450 if (r == null) { 2451 return false; 2452 } 2453 2454 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2455 return true; 2456 } 2457 2458 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2459 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2460 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2461 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2462 ActivityRecord r = activities.get(activityNdx); 2463 if (r.resultTo == self && r.requestCode == requestCode) { 2464 if ((r.resultWho == null && resultWho == null) || 2465 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2466 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2467 false); 2468 } 2469 } 2470 } 2471 } 2472 mService.updateOomAdjLocked(); 2473 } 2474 2475 final void finishTopRunningActivityLocked(ProcessRecord app) { 2476 ActivityRecord r = topRunningActivityLocked(null); 2477 if (r != null && r.app == app) { 2478 // If the top running activity is from this crashing 2479 // process, then terminate it to avoid getting in a loop. 2480 Slog.w(TAG, " Force finishing activity " 2481 + r.intent.getComponent().flattenToShortString()); 2482 int taskNdx = mTaskHistory.indexOf(r.task); 2483 int activityNdx = r.task.mActivities.indexOf(r); 2484 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2485 // Also terminate any activities below it that aren't yet 2486 // stopped, to avoid a situation where one will get 2487 // re-start our crashing activity once it gets resumed again. 2488 --activityNdx; 2489 if (activityNdx < 0) { 2490 do { 2491 --taskNdx; 2492 if (taskNdx < 0) { 2493 break; 2494 } 2495 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2496 } while (activityNdx < 0); 2497 } 2498 if (activityNdx >= 0) { 2499 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2500 if (r.state == ActivityState.RESUMED 2501 || r.state == ActivityState.PAUSING 2502 || r.state == ActivityState.PAUSED) { 2503 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2504 Slog.w(TAG, " Force finishing activity " 2505 + r.intent.getComponent().flattenToShortString()); 2506 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2507 } 2508 } 2509 } 2510 } 2511 } 2512 2513 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2514 ArrayList<ActivityRecord> activities = r.task.mActivities; 2515 for (int index = activities.indexOf(r); index >= 0; --index) { 2516 ActivityRecord cur = activities.get(index); 2517 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2518 break; 2519 } 2520 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2521 } 2522 return true; 2523 } 2524 2525 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2526 // send the result 2527 ActivityRecord resultTo = r.resultTo; 2528 if (resultTo != null) { 2529 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2530 + " who=" + r.resultWho + " req=" + r.requestCode 2531 + " res=" + resultCode + " data=" + resultData); 2532 if (r.info.applicationInfo.uid > 0) { 2533 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2534 resultTo.packageName, resultData, 2535 resultTo.getUriPermissionsLocked()); 2536 } 2537 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2538 resultData); 2539 r.resultTo = null; 2540 } 2541 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2542 2543 // Make sure this HistoryRecord is not holding on to other resources, 2544 // because clients have remote IPC references to this object so we 2545 // can't assume that will go away and want to avoid circular IPC refs. 2546 r.results = null; 2547 r.pendingResults = null; 2548 r.newIntents = null; 2549 r.icicle = null; 2550 } 2551 2552 /** 2553 * @return Returns true if this activity has been removed from the history 2554 * list, or false if it is still in the list and will be removed later. 2555 */ 2556 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2557 String reason, boolean oomAdj) { 2558 if (r.finishing) { 2559 Slog.w(TAG, "Duplicate finish request for " + r); 2560 return false; 2561 } 2562 2563 r.makeFinishing(); 2564 final TaskRecord task = r.task; 2565 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2566 r.userId, System.identityHashCode(r), 2567 task.taskId, r.shortComponentName, reason); 2568 final ArrayList<ActivityRecord> activities = task.mActivities; 2569 final int index = activities.indexOf(r); 2570 if (index < (activities.size() - 1)) { 2571 task.setFrontOfTask(); 2572 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2573 // If the caller asked that this activity (and all above it) 2574 // be cleared when the task is reset, don't lose that information, 2575 // but propagate it up to the next activity. 2576 ActivityRecord next = activities.get(index+1); 2577 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2578 } 2579 } 2580 2581 r.pauseKeyDispatchingLocked(); 2582 2583 adjustFocusedActivityLocked(r); 2584 2585 finishActivityResultsLocked(r, resultCode, resultData); 2586 2587 if (mResumedActivity == r) { 2588 boolean endTask = index <= 0; 2589 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2590 "Prepare close transition: finishing " + r); 2591 mWindowManager.prepareAppTransition(endTask 2592 ? AppTransition.TRANSIT_TASK_CLOSE 2593 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2594 2595 // Tell window manager to prepare for this one to be removed. 2596 mWindowManager.setAppVisibility(r.appToken, false); 2597 2598 if (mPausingActivity == null) { 2599 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2600 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2601 startPausingLocked(false, false); 2602 } 2603 2604 if (endTask) { 2605 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2606 } 2607 } else if (r.state != ActivityState.PAUSING) { 2608 // If the activity is PAUSING, we will complete the finish once 2609 // it is done pausing; else we can just directly finish it here. 2610 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2611 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2612 } else { 2613 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2614 } 2615 2616 return false; 2617 } 2618 2619 static final int FINISH_IMMEDIATELY = 0; 2620 static final int FINISH_AFTER_PAUSE = 1; 2621 static final int FINISH_AFTER_VISIBLE = 2; 2622 2623 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2624 // First things first: if this activity is currently visible, 2625 // and the resumed activity is not yet visible, then hold off on 2626 // finishing until the resumed one becomes visible. 2627 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2628 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2629 mStackSupervisor.mStoppingActivities.add(r); 2630 if (mStackSupervisor.mStoppingActivities.size() > 3 2631 || r.frontOfTask && mTaskHistory.size() <= 1) { 2632 // If we already have a few activities waiting to stop, 2633 // then give up on things going idle and start clearing 2634 // them out. Or if r is the last of activity of the last task the stack 2635 // will be empty and must be cleared immediately. 2636 mStackSupervisor.scheduleIdleLocked(); 2637 } else { 2638 mStackSupervisor.checkReadyForSleepLocked(); 2639 } 2640 } 2641 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2642 + " (finish requested)"); 2643 r.state = ActivityState.STOPPING; 2644 if (oomAdj) { 2645 mService.updateOomAdjLocked(); 2646 } 2647 return r; 2648 } 2649 2650 // make sure the record is cleaned out of other places. 2651 mStackSupervisor.mStoppingActivities.remove(r); 2652 mStackSupervisor.mGoingToSleepActivities.remove(r); 2653 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2654 if (mResumedActivity == r) { 2655 mResumedActivity = null; 2656 } 2657 final ActivityState prevState = r.state; 2658 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2659 r.state = ActivityState.FINISHING; 2660 2661 if (mode == FINISH_IMMEDIATELY 2662 || prevState == ActivityState.STOPPED 2663 || prevState == ActivityState.INITIALIZING) { 2664 // If this activity is already stopped, we can just finish 2665 // it right now. 2666 boolean activityRemoved = destroyActivityLocked(r, true, 2667 oomAdj, "finish-imm"); 2668 if (activityRemoved) { 2669 mStackSupervisor.resumeTopActivitiesLocked(); 2670 } 2671 return activityRemoved ? null : r; 2672 } 2673 2674 // Need to go through the full pause cycle to get this 2675 // activity into the stopped state and then finish it. 2676 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2677 mStackSupervisor.mFinishingActivities.add(r); 2678 r.resumeKeyDispatchingLocked(); 2679 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2680 return r; 2681 } 2682 2683 void finishAllActivitiesLocked() { 2684 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2685 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2686 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2687 final ActivityRecord r = activities.get(activityNdx); 2688 if (r.finishing) { 2689 continue; 2690 } 2691 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2692 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2693 } 2694 } 2695 } 2696 2697 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2698 Intent resultData) { 2699 final ActivityRecord srec = ActivityRecord.forToken(token); 2700 final TaskRecord task = srec.task; 2701 final ArrayList<ActivityRecord> activities = task.mActivities; 2702 final int start = activities.indexOf(srec); 2703 if (!mTaskHistory.contains(task) || (start < 0)) { 2704 return false; 2705 } 2706 int finishTo = start - 1; 2707 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2708 boolean foundParentInTask = false; 2709 final ComponentName dest = destIntent.getComponent(); 2710 if (start > 0 && dest != null) { 2711 for (int i = finishTo; i >= 0; i--) { 2712 ActivityRecord r = activities.get(i); 2713 if (r.info.packageName.equals(dest.getPackageName()) && 2714 r.info.name.equals(dest.getClassName())) { 2715 finishTo = i; 2716 parent = r; 2717 foundParentInTask = true; 2718 break; 2719 } 2720 } 2721 } 2722 2723 IActivityController controller = mService.mController; 2724 if (controller != null) { 2725 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2726 if (next != null) { 2727 // ask watcher if this is allowed 2728 boolean resumeOK = true; 2729 try { 2730 resumeOK = controller.activityResuming(next.packageName); 2731 } catch (RemoteException e) { 2732 mService.mController = null; 2733 Watchdog.getInstance().setActivityController(null); 2734 } 2735 2736 if (!resumeOK) { 2737 return false; 2738 } 2739 } 2740 } 2741 final long origId = Binder.clearCallingIdentity(); 2742 for (int i = start; i > finishTo; i--) { 2743 ActivityRecord r = activities.get(i); 2744 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2745 // Only return the supplied result for the first activity finished 2746 resultCode = Activity.RESULT_CANCELED; 2747 resultData = null; 2748 } 2749 2750 if (parent != null && foundParentInTask) { 2751 final int parentLaunchMode = parent.info.launchMode; 2752 final int destIntentFlags = destIntent.getFlags(); 2753 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2754 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2755 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2756 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2757 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2758 } else { 2759 try { 2760 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2761 destIntent.getComponent(), 0, srec.userId); 2762 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2763 null, aInfo, null, null, parent.appToken, null, 2764 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2765 0, null, true, null, null); 2766 foundParentInTask = res == ActivityManager.START_SUCCESS; 2767 } catch (RemoteException e) { 2768 foundParentInTask = false; 2769 } 2770 requestFinishActivityLocked(parent.appToken, resultCode, 2771 resultData, "navigate-up", true); 2772 } 2773 } 2774 Binder.restoreCallingIdentity(origId); 2775 return foundParentInTask; 2776 } 2777 /** 2778 * Perform the common clean-up of an activity record. This is called both 2779 * as part of destroyActivityLocked() (when destroying the client-side 2780 * representation) and cleaning things up as a result of its hosting 2781 * processing going away, in which case there is no remaining client-side 2782 * state to destroy so only the cleanup here is needed. 2783 */ 2784 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2785 boolean setState) { 2786 if (mResumedActivity == r) { 2787 mResumedActivity = null; 2788 } 2789 if (mPausingActivity == r) { 2790 mPausingActivity = null; 2791 } 2792 mService.clearFocusedActivity(r); 2793 2794 r.configDestroy = false; 2795 r.frozenBeforeDestroy = false; 2796 2797 if (setState) { 2798 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2799 r.state = ActivityState.DESTROYED; 2800 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2801 r.app = null; 2802 } 2803 2804 // Make sure this record is no longer in the pending finishes list. 2805 // This could happen, for example, if we are trimming activities 2806 // down to the max limit while they are still waiting to finish. 2807 mStackSupervisor.mFinishingActivities.remove(r); 2808 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2809 2810 // Remove any pending results. 2811 if (r.finishing && r.pendingResults != null) { 2812 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2813 PendingIntentRecord rec = apr.get(); 2814 if (rec != null) { 2815 mService.cancelIntentSenderLocked(rec, false); 2816 } 2817 } 2818 r.pendingResults = null; 2819 } 2820 2821 if (cleanServices) { 2822 cleanUpActivityServicesLocked(r); 2823 } 2824 2825 // Get rid of any pending idle timeouts. 2826 removeTimeoutsForActivityLocked(r); 2827 } 2828 2829 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2830 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2831 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2832 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2833 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2834 r.finishLaunchTickingLocked(); 2835 } 2836 2837 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2838 mStackSupervisor.removeChildActivityContainers(r); 2839 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2840 r.makeFinishing(); 2841 if (DEBUG_ADD_REMOVE) { 2842 RuntimeException here = new RuntimeException("here"); 2843 here.fillInStackTrace(); 2844 Slog.i(TAG, "Removing activity " + r + " from stack"); 2845 } 2846 r.takeFromHistory(); 2847 removeTimeoutsForActivityLocked(r); 2848 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2849 r.state = ActivityState.DESTROYED; 2850 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2851 r.app = null; 2852 mWindowManager.removeAppToken(r.appToken); 2853 if (VALIDATE_TOKENS) { 2854 validateAppTokensLocked(); 2855 } 2856 final TaskRecord task = r.task; 2857 if (task != null && task.removeActivity(r)) { 2858 if (DEBUG_STACK) Slog.i(TAG, 2859 "removeActivityFromHistoryLocked: last activity removed from " + this); 2860 if (mStackSupervisor.isFrontStack(this) && task == topTask() && task.mOnTopOfHome) { 2861 mStackSupervisor.moveHomeToTop(); 2862 } 2863 removeTask(task); 2864 } 2865 cleanUpActivityServicesLocked(r); 2866 r.removeUriPermissionsLocked(); 2867 } 2868 2869 /** 2870 * Perform clean-up of service connections in an activity record. 2871 */ 2872 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2873 // Throw away any services that have been bound by this activity. 2874 if (r.connections != null) { 2875 Iterator<ConnectionRecord> it = r.connections.iterator(); 2876 while (it.hasNext()) { 2877 ConnectionRecord c = it.next(); 2878 mService.mServices.removeConnectionLocked(c, null, r); 2879 } 2880 r.connections = null; 2881 } 2882 } 2883 2884 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2885 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2886 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2887 mHandler.sendMessage(msg); 2888 } 2889 2890 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2891 boolean lastIsOpaque = false; 2892 boolean activityRemoved = false; 2893 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2894 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2895 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2896 final ActivityRecord r = activities.get(activityNdx); 2897 if (r.finishing) { 2898 continue; 2899 } 2900 if (r.fullscreen) { 2901 lastIsOpaque = true; 2902 } 2903 if (owner != null && r.app != owner) { 2904 continue; 2905 } 2906 if (!lastIsOpaque) { 2907 continue; 2908 } 2909 // We can destroy this one if we have its icicle saved and 2910 // it is not in the process of pausing/stopping/finishing. 2911 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2912 && r.haveState && !r.visible && r.stopped 2913 && r.state != ActivityState.DESTROYING 2914 && r.state != ActivityState.DESTROYED) { 2915 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2916 + " resumed=" + mResumedActivity 2917 + " pausing=" + mPausingActivity); 2918 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2919 activityRemoved = true; 2920 } 2921 } 2922 } 2923 } 2924 if (activityRemoved) { 2925 mStackSupervisor.resumeTopActivitiesLocked(); 2926 } 2927 } 2928 2929 /** 2930 * Destroy the current CLIENT SIDE instance of an activity. This may be 2931 * called both when actually finishing an activity, or when performing 2932 * a configuration switch where we destroy the current client-side object 2933 * but then create a new client-side object for this same HistoryRecord. 2934 */ 2935 final boolean destroyActivityLocked(ActivityRecord r, 2936 boolean removeFromApp, boolean oomAdj, String reason) { 2937 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2938 TAG, "Removing activity from " + reason + ": token=" + r 2939 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2940 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2941 r.userId, System.identityHashCode(r), 2942 r.task.taskId, r.shortComponentName, reason); 2943 2944 boolean removedFromHistory = false; 2945 2946 cleanUpActivityLocked(r, false, false); 2947 2948 final boolean hadApp = r.app != null; 2949 2950 if (hadApp) { 2951 if (removeFromApp) { 2952 r.app.activities.remove(r); 2953 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2954 mService.mHeavyWeightProcess = null; 2955 mService.mHandler.sendEmptyMessage( 2956 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2957 } 2958 if (r.app.activities.isEmpty()) { 2959 // No longer have activities, so update LRU list and oom adj. 2960 mService.updateLruProcessLocked(r.app, false, null); 2961 mService.updateOomAdjLocked(); 2962 } 2963 } 2964 2965 boolean skipDestroy = false; 2966 2967 try { 2968 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2969 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2970 r.configChangeFlags); 2971 } catch (Exception e) { 2972 // We can just ignore exceptions here... if the process 2973 // has crashed, our death notification will clean things 2974 // up. 2975 //Slog.w(TAG, "Exception thrown during finish", e); 2976 if (r.finishing) { 2977 removeActivityFromHistoryLocked(r); 2978 removedFromHistory = true; 2979 skipDestroy = true; 2980 } 2981 } 2982 2983 r.nowVisible = false; 2984 2985 // If the activity is finishing, we need to wait on removing it 2986 // from the list to give it a chance to do its cleanup. During 2987 // that time it may make calls back with its token so we need to 2988 // be able to find it on the list and so we don't want to remove 2989 // it from the list yet. Otherwise, we can just immediately put 2990 // it in the destroyed state since we are not removing it from the 2991 // list. 2992 if (r.finishing && !skipDestroy) { 2993 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2994 + " (destroy requested)"); 2995 r.state = ActivityState.DESTROYING; 2996 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2997 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 2998 } else { 2999 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 3000 r.state = ActivityState.DESTROYED; 3001 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3002 r.app = null; 3003 } 3004 } else { 3005 // remove this record from the history. 3006 if (r.finishing) { 3007 removeActivityFromHistoryLocked(r); 3008 removedFromHistory = true; 3009 } else { 3010 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 3011 r.state = ActivityState.DESTROYED; 3012 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3013 r.app = null; 3014 } 3015 } 3016 3017 r.configChangeFlags = 0; 3018 3019 if (!mLRUActivities.remove(r) && hadApp) { 3020 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 3021 } 3022 3023 return removedFromHistory; 3024 } 3025 3026 final void activityDestroyedLocked(IBinder token) { 3027 final long origId = Binder.clearCallingIdentity(); 3028 try { 3029 ActivityRecord r = ActivityRecord.forToken(token); 3030 if (r != null) { 3031 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3032 } 3033 3034 if (isInStackLocked(token) != null) { 3035 if (r.state == ActivityState.DESTROYING) { 3036 cleanUpActivityLocked(r, true, false); 3037 removeActivityFromHistoryLocked(r); 3038 } 3039 } 3040 mStackSupervisor.resumeTopActivitiesLocked(); 3041 } finally { 3042 Binder.restoreCallingIdentity(origId); 3043 } 3044 } 3045 3046 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3047 ProcessRecord app, String listName) { 3048 int i = list.size(); 3049 if (DEBUG_CLEANUP) Slog.v( 3050 TAG, "Removing app " + app + " from list " + listName 3051 + " with " + i + " entries"); 3052 while (i > 0) { 3053 i--; 3054 ActivityRecord r = list.get(i); 3055 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3056 if (r.app == app) { 3057 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3058 list.remove(i); 3059 removeTimeoutsForActivityLocked(r); 3060 } 3061 } 3062 } 3063 3064 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3065 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3066 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3067 "mStoppingActivities"); 3068 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3069 "mGoingToSleepActivities"); 3070 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3071 "mWaitingVisibleActivities"); 3072 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3073 "mFinishingActivities"); 3074 3075 boolean hasVisibleActivities = false; 3076 3077 // Clean out the history list. 3078 int i = numActivities(); 3079 if (DEBUG_CLEANUP) Slog.v( 3080 TAG, "Removing app " + app + " from history with " + i + " entries"); 3081 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3082 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3083 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3084 final ActivityRecord r = activities.get(activityNdx); 3085 --i; 3086 if (DEBUG_CLEANUP) Slog.v( 3087 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3088 if (r.app == app) { 3089 boolean remove; 3090 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3091 // Don't currently have state for the activity, or 3092 // it is finishing -- always remove it. 3093 remove = true; 3094 } else if (r.launchCount > 2 && 3095 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3096 // We have launched this activity too many times since it was 3097 // able to run, so give up and remove it. 3098 remove = true; 3099 } else { 3100 // The process may be gone, but the activity lives on! 3101 remove = false; 3102 } 3103 if (remove) { 3104 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3105 RuntimeException here = new RuntimeException("here"); 3106 here.fillInStackTrace(); 3107 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3108 + ": haveState=" + r.haveState 3109 + " stateNotNeeded=" + r.stateNotNeeded 3110 + " finishing=" + r.finishing 3111 + " state=" + r.state, here); 3112 } 3113 if (!r.finishing) { 3114 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3115 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3116 r.userId, System.identityHashCode(r), 3117 r.task.taskId, r.shortComponentName, 3118 "proc died without state saved"); 3119 if (r.state == ActivityState.RESUMED) { 3120 mService.updateUsageStats(r, false); 3121 } 3122 } 3123 removeActivityFromHistoryLocked(r); 3124 3125 } else { 3126 // We have the current state for this activity, so 3127 // it can be restarted later when needed. 3128 if (localLOGV) Slog.v( 3129 TAG, "Keeping entry, setting app to null"); 3130 if (r.visible) { 3131 hasVisibleActivities = true; 3132 } 3133 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3134 + r); 3135 r.app = null; 3136 r.nowVisible = false; 3137 if (!r.haveState) { 3138 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3139 "App died, clearing saved state of " + r); 3140 r.icicle = null; 3141 } 3142 } 3143 3144 cleanUpActivityLocked(r, true, true); 3145 } 3146 } 3147 } 3148 3149 return hasVisibleActivities; 3150 } 3151 3152 final void updateTransitLocked(int transit, Bundle options) { 3153 if (options != null) { 3154 ActivityRecord r = topRunningActivityLocked(null); 3155 if (r != null && r.state != ActivityState.RESUMED) { 3156 r.updateOptionsLocked(options); 3157 } else { 3158 ActivityOptions.abort(options); 3159 } 3160 } 3161 mWindowManager.prepareAppTransition(transit, false); 3162 } 3163 3164 void moveHomeTaskToTop() { 3165 final int top = mTaskHistory.size() - 1; 3166 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3167 final TaskRecord task = mTaskHistory.get(taskNdx); 3168 if (task.isHomeTask()) { 3169 if (DEBUG_TASKS || DEBUG_STACK) Slog.d(TAG, "moveHomeTaskToTop: moving " + task); 3170 mTaskHistory.remove(taskNdx); 3171 mTaskHistory.add(top, task); 3172 mWindowManager.moveTaskToTop(task.taskId); 3173 return; 3174 } 3175 } 3176 } 3177 3178 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3179 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3180 3181 final int numTasks = mTaskHistory.size(); 3182 final int index = mTaskHistory.indexOf(tr); 3183 if (numTasks == 0 || index < 0) { 3184 // nothing to do! 3185 if (reason != null && 3186 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3187 ActivityOptions.abort(options); 3188 } else { 3189 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3190 } 3191 return; 3192 } 3193 3194 moveToFront(); 3195 3196 // Shift all activities with this task up to the top 3197 // of the stack, keeping them in the same internal order. 3198 insertTaskAtTop(tr); 3199 3200 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3201 if (reason != null && 3202 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3203 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3204 ActivityRecord r = topRunningActivityLocked(null); 3205 if (r != null) { 3206 mNoAnimActivities.add(r); 3207 } 3208 ActivityOptions.abort(options); 3209 } else { 3210 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3211 } 3212 3213 mWindowManager.moveTaskToTop(tr.taskId); 3214 3215 mStackSupervisor.resumeTopActivitiesLocked(); 3216 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3217 3218 if (VALIDATE_TOKENS) { 3219 validateAppTokensLocked(); 3220 } 3221 } 3222 3223 /** 3224 * Worker method for rearranging history stack. Implements the function of moving all 3225 * activities for a specific task (gathering them if disjoint) into a single group at the 3226 * bottom of the stack. 3227 * 3228 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3229 * to premeptively cancel the move. 3230 * 3231 * @param taskId The taskId to collect and move to the bottom. 3232 * @return Returns true if the move completed, false if not. 3233 */ 3234 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3235 final TaskRecord tr = taskForIdLocked(taskId); 3236 if (tr == null) { 3237 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3238 return false; 3239 } 3240 3241 Slog.i(TAG, "moveTaskToBack: " + tr); 3242 3243 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3244 3245 // If we have a watcher, preflight the move before committing to it. First check 3246 // for *other* available tasks, but if none are available, then try again allowing the 3247 // current task to be selected. 3248 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3249 ActivityRecord next = topRunningActivityLocked(null, taskId); 3250 if (next == null) { 3251 next = topRunningActivityLocked(null, 0); 3252 } 3253 if (next != null) { 3254 // ask watcher if this is allowed 3255 boolean moveOK = true; 3256 try { 3257 moveOK = mService.mController.activityResuming(next.packageName); 3258 } catch (RemoteException e) { 3259 mService.mController = null; 3260 Watchdog.getInstance().setActivityController(null); 3261 } 3262 if (!moveOK) { 3263 return false; 3264 } 3265 } 3266 } 3267 3268 if (DEBUG_TRANSITION) Slog.v(TAG, 3269 "Prepare to back transition: task=" + taskId); 3270 3271 mTaskHistory.remove(tr); 3272 mTaskHistory.add(0, tr); 3273 3274 // There is an assumption that moving a task to the back moves it behind the home activity. 3275 // We make sure here that some activity in the stack will launch home. 3276 ActivityRecord lastActivity = null; 3277 int numTasks = mTaskHistory.size(); 3278 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3279 final TaskRecord task = mTaskHistory.get(taskNdx); 3280 if (task.mOnTopOfHome) { 3281 break; 3282 } 3283 if (taskNdx == 1) { 3284 // Set the last task before tr to go to home. 3285 task.mOnTopOfHome = true; 3286 } 3287 } 3288 3289 if (reason != null && 3290 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3291 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3292 ActivityRecord r = topRunningActivityLocked(null); 3293 if (r != null) { 3294 mNoAnimActivities.add(r); 3295 } 3296 } else { 3297 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3298 } 3299 mWindowManager.moveTaskToBottom(taskId); 3300 3301 if (VALIDATE_TOKENS) { 3302 validateAppTokensLocked(); 3303 } 3304 3305 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3306 if (task == tr && tr.mOnTopOfHome || numTasks <= 1 && isOnHomeDisplay()) { 3307 tr.mOnTopOfHome = false; 3308 return mStackSupervisor.resumeHomeActivity(null); 3309 } 3310 3311 mStackSupervisor.resumeTopActivitiesLocked(); 3312 return true; 3313 } 3314 3315 static final void logStartActivity(int tag, ActivityRecord r, 3316 TaskRecord task) { 3317 final Uri data = r.intent.getData(); 3318 final String strData = data != null ? data.toSafeString() : null; 3319 3320 EventLog.writeEvent(tag, 3321 r.userId, System.identityHashCode(r), task.taskId, 3322 r.shortComponentName, r.intent.getAction(), 3323 r.intent.getType(), strData, r.intent.getFlags()); 3324 } 3325 3326 /** 3327 * Make sure the given activity matches the current configuration. Returns 3328 * false if the activity had to be destroyed. Returns true if the 3329 * configuration is the same, or the activity will remain running as-is 3330 * for whatever reason. Ensures the HistoryRecord is updated with the 3331 * correct configuration and all other bookkeeping is handled. 3332 */ 3333 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3334 int globalChanges) { 3335 if (mConfigWillChange) { 3336 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3337 "Skipping config check (will change): " + r); 3338 return true; 3339 } 3340 3341 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3342 "Ensuring correct configuration: " + r); 3343 3344 // Short circuit: if the two configurations are the exact same 3345 // object (the common case), then there is nothing to do. 3346 Configuration newConfig = mService.mConfiguration; 3347 if (r.configuration == newConfig && !r.forceNewConfig) { 3348 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3349 "Configuration unchanged in " + r); 3350 return true; 3351 } 3352 3353 // We don't worry about activities that are finishing. 3354 if (r.finishing) { 3355 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3356 "Configuration doesn't matter in finishing " + r); 3357 r.stopFreezingScreenLocked(false); 3358 return true; 3359 } 3360 3361 // Okay we now are going to make this activity have the new config. 3362 // But then we need to figure out how it needs to deal with that. 3363 Configuration oldConfig = r.configuration; 3364 r.configuration = newConfig; 3365 3366 // Determine what has changed. May be nothing, if this is a config 3367 // that has come back from the app after going idle. In that case 3368 // we just want to leave the official config object now in the 3369 // activity and do nothing else. 3370 final int changes = oldConfig.diff(newConfig); 3371 if (changes == 0 && !r.forceNewConfig) { 3372 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3373 "Configuration no differences in " + r); 3374 return true; 3375 } 3376 3377 // If the activity isn't currently running, just leave the new 3378 // configuration and it will pick that up next time it starts. 3379 if (r.app == null || r.app.thread == null) { 3380 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3381 "Configuration doesn't matter not running " + r); 3382 r.stopFreezingScreenLocked(false); 3383 r.forceNewConfig = false; 3384 return true; 3385 } 3386 3387 // Figure out how to handle the changes between the configurations. 3388 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3389 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3390 + Integer.toHexString(changes) + ", handles=0x" 3391 + Integer.toHexString(r.info.getRealConfigChanged()) 3392 + ", newConfig=" + newConfig); 3393 } 3394 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3395 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3396 r.configChangeFlags |= changes; 3397 r.startFreezingScreenLocked(r.app, globalChanges); 3398 r.forceNewConfig = false; 3399 if (r.app == null || r.app.thread == null) { 3400 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3401 "Config is destroying non-running " + r); 3402 destroyActivityLocked(r, true, false, "config"); 3403 } else if (r.state == ActivityState.PAUSING) { 3404 // A little annoying: we are waiting for this activity to 3405 // finish pausing. Let's not do anything now, but just 3406 // flag that it needs to be restarted when done pausing. 3407 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3408 "Config is skipping already pausing " + r); 3409 r.configDestroy = true; 3410 return true; 3411 } else if (r.state == ActivityState.RESUMED) { 3412 // Try to optimize this case: the configuration is changing 3413 // and we need to restart the top, resumed activity. 3414 // Instead of doing the normal handshaking, just say 3415 // "restart!". 3416 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3417 "Config is relaunching resumed " + r); 3418 relaunchActivityLocked(r, r.configChangeFlags, true); 3419 r.configChangeFlags = 0; 3420 } else { 3421 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3422 "Config is relaunching non-resumed " + r); 3423 relaunchActivityLocked(r, r.configChangeFlags, false); 3424 r.configChangeFlags = 0; 3425 } 3426 3427 // All done... tell the caller we weren't able to keep this 3428 // activity around. 3429 return false; 3430 } 3431 3432 // Default case: the activity can handle this new configuration, so 3433 // hand it over. Note that we don't need to give it the new 3434 // configuration, since we always send configuration changes to all 3435 // process when they happen so it can just use whatever configuration 3436 // it last got. 3437 if (r.app != null && r.app.thread != null) { 3438 try { 3439 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3440 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3441 } catch (RemoteException e) { 3442 // If process died, whatever. 3443 } 3444 } 3445 r.stopFreezingScreenLocked(false); 3446 3447 return true; 3448 } 3449 3450 private boolean relaunchActivityLocked(ActivityRecord r, 3451 int changes, boolean andResume) { 3452 List<ResultInfo> results = null; 3453 List<Intent> newIntents = null; 3454 if (andResume) { 3455 results = r.results; 3456 newIntents = r.newIntents; 3457 } 3458 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3459 + " with results=" + results + " newIntents=" + newIntents 3460 + " andResume=" + andResume); 3461 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3462 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3463 r.task.taskId, r.shortComponentName); 3464 3465 r.startFreezingScreenLocked(r.app, 0); 3466 3467 mStackSupervisor.removeChildActivityContainers(r); 3468 3469 try { 3470 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3471 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3472 + r); 3473 r.forceNewConfig = false; 3474 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3475 changes, !andResume, new Configuration(mService.mConfiguration)); 3476 // Note: don't need to call pauseIfSleepingLocked() here, because 3477 // the caller will only pass in 'andResume' if this activity is 3478 // currently resumed, which implies we aren't sleeping. 3479 } catch (RemoteException e) { 3480 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3481 } 3482 3483 if (andResume) { 3484 r.results = null; 3485 r.newIntents = null; 3486 r.state = ActivityState.RESUMED; 3487 } else { 3488 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3489 r.state = ActivityState.PAUSED; 3490 } 3491 3492 return true; 3493 } 3494 3495 boolean willActivityBeVisibleLocked(IBinder token) { 3496 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3497 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3498 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3499 final ActivityRecord r = activities.get(activityNdx); 3500 if (r.appToken == token) { 3501 return true; 3502 } 3503 if (r.fullscreen && !r.finishing) { 3504 return false; 3505 } 3506 } 3507 } 3508 final ActivityRecord r = ActivityRecord.forToken(token); 3509 if (r == null) { 3510 return false; 3511 } 3512 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3513 + " would have returned true for r=" + r); 3514 return !r.finishing; 3515 } 3516 3517 void closeSystemDialogsLocked() { 3518 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3519 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3520 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3521 final ActivityRecord r = activities.get(activityNdx); 3522 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3523 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3524 } 3525 } 3526 } 3527 } 3528 3529 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3530 boolean didSomething = false; 3531 TaskRecord lastTask = null; 3532 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3533 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3534 int numActivities = activities.size(); 3535 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3536 ActivityRecord r = activities.get(activityNdx); 3537 final boolean samePackage = r.packageName.equals(name) 3538 || (name == null && r.userId == userId); 3539 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3540 && (samePackage || r.task == lastTask) 3541 && (r.app == null || evenPersistent || !r.app.persistent)) { 3542 if (!doit) { 3543 if (r.finishing) { 3544 // If this activity is just finishing, then it is not 3545 // interesting as far as something to stop. 3546 continue; 3547 } 3548 return true; 3549 } 3550 didSomething = true; 3551 Slog.i(TAG, " Force finishing activity " + r); 3552 if (samePackage) { 3553 if (r.app != null) { 3554 r.app.removed = true; 3555 } 3556 r.app = null; 3557 } 3558 lastTask = r.task; 3559 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3560 true)) { 3561 // r has been deleted from mActivities, accommodate. 3562 --numActivities; 3563 --activityNdx; 3564 } 3565 } 3566 } 3567 } 3568 return didSomething; 3569 } 3570 3571 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3572 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3573 final TaskRecord task = mTaskHistory.get(taskNdx); 3574 ActivityRecord r = null; 3575 ActivityRecord top = null; 3576 int numActivities = 0; 3577 int numRunning = 0; 3578 final ArrayList<ActivityRecord> activities = task.mActivities; 3579 if (activities.isEmpty()) { 3580 continue; 3581 } 3582 if (!allowed && !task.isHomeTask() && task.creatorUid != callingUid) { 3583 continue; 3584 } 3585 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3586 r = activities.get(activityNdx); 3587 3588 // Initialize state for next task if needed. 3589 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3590 top = r; 3591 numActivities = numRunning = 0; 3592 } 3593 3594 // Add 'r' into the current task. 3595 numActivities++; 3596 if (r.app != null && r.app.thread != null) { 3597 numRunning++; 3598 } 3599 3600 if (localLOGV) Slog.v( 3601 TAG, r.intent.getComponent().flattenToShortString() 3602 + ": task=" + r.task); 3603 } 3604 3605 RunningTaskInfo ci = new RunningTaskInfo(); 3606 ci.id = task.taskId; 3607 ci.baseActivity = r.intent.getComponent(); 3608 ci.topActivity = top.intent.getComponent(); 3609 ci.lastActiveTime = task.lastActiveTime; 3610 3611 if (top.thumbHolder != null) { 3612 ci.description = top.thumbHolder.lastDescription; 3613 } 3614 ci.numActivities = numActivities; 3615 ci.numRunning = numRunning; 3616 //System.out.println( 3617 // "#" + maxNum + ": " + " descr=" + ci.description); 3618 list.add(ci); 3619 } 3620 } 3621 3622 public void unhandledBackLocked() { 3623 final int top = mTaskHistory.size() - 1; 3624 if (DEBUG_SWITCH) Slog.d( 3625 TAG, "Performing unhandledBack(): top activity at " + top); 3626 if (top >= 0) { 3627 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3628 int activityTop = activities.size() - 1; 3629 if (activityTop > 0) { 3630 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3631 "unhandled-back", true); 3632 } 3633 } 3634 } 3635 3636 /** 3637 * Reset local parameters because an app's activity died. 3638 * @param app The app of the activity that died. 3639 * @return result from removeHistoryRecordsForAppLocked. 3640 */ 3641 boolean handleAppDiedLocked(ProcessRecord app) { 3642 if (mPausingActivity != null && mPausingActivity.app == app) { 3643 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3644 "App died while pausing: " + mPausingActivity); 3645 mPausingActivity = null; 3646 } 3647 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3648 mLastPausedActivity = null; 3649 mLastNoHistoryActivity = null; 3650 } 3651 3652 return removeHistoryRecordsForAppLocked(app); 3653 } 3654 3655 void handleAppCrashLocked(ProcessRecord app) { 3656 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3657 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3658 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3659 final ActivityRecord r = activities.get(activityNdx); 3660 if (r.app == app) { 3661 Slog.w(TAG, " Force finishing activity " 3662 + r.intent.getComponent().flattenToShortString()); 3663 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3664 } 3665 } 3666 } 3667 } 3668 3669 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3670 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3671 boolean printed = false; 3672 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3673 final TaskRecord task = mTaskHistory.get(taskNdx); 3674 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3675 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3676 dumpClient, dumpPackage, needSep, header, 3677 " Task id #" + task.taskId); 3678 if (printed) { 3679 header = null; 3680 } 3681 } 3682 return printed; 3683 } 3684 3685 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3686 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3687 3688 if ("all".equals(name)) { 3689 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3690 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3691 } 3692 } else if ("top".equals(name)) { 3693 final int top = mTaskHistory.size() - 1; 3694 if (top >= 0) { 3695 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3696 int listTop = list.size() - 1; 3697 if (listTop >= 0) { 3698 activities.add(list.get(listTop)); 3699 } 3700 } 3701 } else { 3702 ItemMatcher matcher = new ItemMatcher(); 3703 matcher.build(name); 3704 3705 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3706 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3707 if (matcher.match(r1, r1.intent.getComponent())) { 3708 activities.add(r1); 3709 } 3710 } 3711 } 3712 } 3713 3714 return activities; 3715 } 3716 3717 ActivityRecord restartPackage(String packageName) { 3718 ActivityRecord starting = topRunningActivityLocked(null); 3719 3720 // All activities that came from the package must be 3721 // restarted as if there was a config change. 3722 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3723 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3724 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3725 final ActivityRecord a = activities.get(activityNdx); 3726 if (a.info.packageName.equals(packageName)) { 3727 a.forceNewConfig = true; 3728 if (starting != null && a == starting && a.visible) { 3729 a.startFreezingScreenLocked(starting.app, 3730 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3731 } 3732 } 3733 } 3734 } 3735 3736 return starting; 3737 } 3738 3739 void removeTask(TaskRecord task) { 3740 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3741 mWindowManager.removeTask(task.taskId); 3742 final ActivityRecord r = mResumedActivity; 3743 if (r != null && r.task == task) { 3744 mResumedActivity = null; 3745 } 3746 3747 final int taskNdx = mTaskHistory.indexOf(task); 3748 final int topTaskNdx = mTaskHistory.size() - 1; 3749 if (task.mOnTopOfHome && taskNdx < topTaskNdx) { 3750 mTaskHistory.get(taskNdx + 1).mOnTopOfHome = true; 3751 } 3752 mTaskHistory.remove(task); 3753 3754 if (task.mActivities.isEmpty()) { 3755 final boolean isVoiceSession = task.voiceSession != null; 3756 if (isVoiceSession) { 3757 try { 3758 task.voiceSession.taskFinished(task.intent, task.taskId); 3759 } catch (RemoteException e) { 3760 } 3761 } 3762 if (task.autoRemoveFromRecents() || isVoiceSession) { 3763 // Task creator asked to remove this when done, or this task was a voice 3764 // interaction, so it should not remain on the recent tasks list. 3765 mService.mRecentTasks.remove(task); 3766 } 3767 } 3768 3769 if (mTaskHistory.isEmpty()) { 3770 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3771 if (isOnHomeDisplay()) { 3772 mStackSupervisor.moveHomeStack(!isHomeStack()); 3773 } 3774 if (mStacks != null) { 3775 mStacks.remove(this); 3776 mStacks.add(0, this); 3777 } 3778 } 3779 } 3780 3781 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 3782 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 3783 boolean toTop) { 3784 TaskRecord task = new TaskRecord(taskId, info, intent, voiceSession, voiceInteractor); 3785 addTask(task, toTop, false); 3786 return task; 3787 } 3788 3789 ArrayList<TaskRecord> getAllTasks() { 3790 return new ArrayList<TaskRecord>(mTaskHistory); 3791 } 3792 3793 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 3794 task.stack = this; 3795 if (toTop) { 3796 insertTaskAtTop(task); 3797 } else { 3798 mTaskHistory.add(0, task); 3799 } 3800 if (!moving && task.voiceSession != null) { 3801 try { 3802 task.voiceSession.taskStarted(task.intent, task.taskId); 3803 } catch (RemoteException e) { 3804 } 3805 } 3806 } 3807 3808 public int getStackId() { 3809 return mStackId; 3810 } 3811 3812 @Override 3813 public String toString() { 3814 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3815 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3816 } 3817} 3818