ActivityStack.java revision 70778d7d53e1ade34f9ddcdf0860540bb18d7648
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.ActivityRecord.HOME_ACTIVITY_TYPE; 34import static com.android.server.am.ActivityRecord.APPLICATION_ACTIVITY_TYPE; 35import static com.android.server.am.ActivityRecord.RECENTS_ACTIVITY_TYPE; 36 37import static com.android.server.am.ActivityStackSupervisor.DEBUG_ADD_REMOVE; 38import static com.android.server.am.ActivityStackSupervisor.DEBUG_APP; 39import static com.android.server.am.ActivityStackSupervisor.DEBUG_CONTAINERS; 40import static com.android.server.am.ActivityStackSupervisor.DEBUG_SAVED_STATE; 41import static com.android.server.am.ActivityStackSupervisor.DEBUG_SCREENSHOTS; 42import static com.android.server.am.ActivityStackSupervisor.DEBUG_STATES; 43import static com.android.server.am.ActivityStackSupervisor.HOME_STACK_ID; 44 45import com.android.internal.app.IVoiceInteractor; 46import com.android.internal.os.BatteryStatsImpl; 47import com.android.server.Watchdog; 48import com.android.server.am.ActivityManagerService.ItemMatcher; 49import com.android.server.am.ActivityStackSupervisor.ActivityContainer; 50import com.android.server.wm.AppTransition; 51import com.android.server.wm.TaskGroup; 52import com.android.server.wm.WindowManagerService; 53 54import android.app.Activity; 55import android.app.ActivityManager; 56import android.app.ActivityOptions; 57import android.app.AppGlobals; 58import android.app.IActivityController; 59import android.app.ResultInfo; 60import android.app.ActivityManager.RunningTaskInfo; 61import android.content.ComponentName; 62import android.content.Intent; 63import android.content.pm.ActivityInfo; 64import android.content.pm.PackageManager; 65import android.content.res.Configuration; 66import android.content.res.Resources; 67import android.graphics.Bitmap; 68import android.net.Uri; 69import android.os.Binder; 70import android.os.Bundle; 71import android.os.Debug; 72import android.os.Handler; 73import android.os.IBinder; 74import android.os.Looper; 75import android.os.Message; 76import android.os.PersistableBundle; 77import android.os.RemoteException; 78import android.os.SystemClock; 79import android.os.Trace; 80import android.os.UserHandle; 81import android.service.voice.IVoiceInteractionSession; 82import android.util.EventLog; 83import android.util.Slog; 84import android.view.Display; 85 86import java.io.FileDescriptor; 87import java.io.PrintWriter; 88import java.lang.ref.WeakReference; 89import java.util.ArrayList; 90import java.util.Iterator; 91import java.util.List; 92import java.util.Objects; 93 94/** 95 * State and management of a single stack of activities. 96 */ 97final class ActivityStack { 98 99 // Ticks during which we check progress while waiting for an app to launch. 100 static final int LAUNCH_TICK = 500; 101 102 // How long we wait until giving up on the last activity to pause. This 103 // is short because it directly impacts the responsiveness of starting the 104 // next activity. 105 static final int PAUSE_TIMEOUT = 500; 106 107 // How long we wait for the activity to tell us it has stopped before 108 // giving up. This is a good amount of time because we really need this 109 // from the application in order to get its saved state. 110 static final int STOP_TIMEOUT = 10*1000; 111 112 // How long we wait until giving up on an activity telling us it has 113 // finished destroying itself. 114 static final int DESTROY_TIMEOUT = 10*1000; 115 116 // How long until we reset a task when the user returns to it. Currently 117 // disabled. 118 static final long ACTIVITY_INACTIVE_RESET_TIME = 0; 119 120 // How long between activity launches that we consider safe to not warn 121 // the user about an unexpected activity being launched on top. 122 static final long START_WARN_TIME = 5*1000; 123 124 // Set to false to disable the preview that is shown while a new activity 125 // is being started. 126 static final boolean SHOW_APP_STARTING_PREVIEW = true; 127 128 // How long to wait for all background Activities to redraw following a call to 129 // convertToTranslucent(). 130 static final long TRANSLUCENT_CONVERSION_TIMEOUT = 2000; 131 132 static final boolean SCREENSHOT_FORCE_565 = ActivityManager.isLowRamDeviceStatic(); 133 134 enum ActivityState { 135 INITIALIZING, 136 RESUMED, 137 PAUSING, 138 PAUSED, 139 STOPPING, 140 STOPPED, 141 FINISHING, 142 DESTROYING, 143 DESTROYED 144 } 145 146 final ActivityManagerService mService; 147 final WindowManagerService mWindowManager; 148 149 /** 150 * The back history of all previous (and possibly still 151 * running) activities. It contains #TaskRecord objects. 152 */ 153 private ArrayList<TaskRecord> mTaskHistory = new ArrayList<TaskRecord>(); 154 155 /** 156 * Used for validating app tokens with window manager. 157 */ 158 final ArrayList<TaskGroup> mValidateAppTokens = new ArrayList<TaskGroup>(); 159 160 /** 161 * List of running activities, sorted by recent usage. 162 * The first entry in the list is the least recently used. 163 * It contains HistoryRecord objects. 164 */ 165 final ArrayList<ActivityRecord> mLRUActivities = new ArrayList<ActivityRecord>(); 166 167 /** 168 * Animations that for the current transition have requested not to 169 * be considered for the transition animation. 170 */ 171 final ArrayList<ActivityRecord> mNoAnimActivities = new ArrayList<ActivityRecord>(); 172 173 /** 174 * When we are in the process of pausing an activity, before starting the 175 * next one, this variable holds the activity that is currently being paused. 176 */ 177 ActivityRecord mPausingActivity = null; 178 179 /** 180 * This is the last activity that we put into the paused state. This is 181 * used to determine if we need to do an activity transition while sleeping, 182 * when we normally hold the top activity paused. 183 */ 184 ActivityRecord mLastPausedActivity = null; 185 186 /** 187 * Activities that specify No History must be removed once the user navigates away from them. 188 * If the device goes to sleep with such an activity in the paused state then we save it here 189 * and finish it later if another activity replaces it on wakeup. 190 */ 191 ActivityRecord mLastNoHistoryActivity = null; 192 193 /** 194 * Current activity that is resumed, or null if there is none. 195 */ 196 ActivityRecord mResumedActivity = null; 197 198 /** 199 * This is the last activity that has been started. It is only used to 200 * identify when multiple activities are started at once so that the user 201 * can be warned they may not be in the activity they think they are. 202 */ 203 ActivityRecord mLastStartedActivity = null; 204 205 // The topmost Activity passed to convertToTranslucent(). When non-null it means we are 206 // waiting for all Activities in mUndrawnActivitiesBelowTopTranslucent to be removed as they 207 // are drawn. When the last member of mUndrawnActivitiesBelowTopTranslucent is removed the 208 // Activity in mTranslucentActivityWaiting is notified via 209 // Activity.onTranslucentConversionComplete(false). If a timeout occurs prior to the last 210 // background activity being drawn then the same call will be made with a true value. 211 ActivityRecord mTranslucentActivityWaiting = null; 212 ArrayList<ActivityRecord> mUndrawnActivitiesBelowTopTranslucent = 213 new ArrayList<ActivityRecord>(); 214 // Options passed from the caller of the convertToTranslucent to the activity that will 215 // appear below it. 216 ActivityOptions mReturningActivityOptions = null; 217 218 /** 219 * Set when we know we are going to be calling updateConfiguration() 220 * soon, so want to skip intermediate config checks. 221 */ 222 boolean mConfigWillChange; 223 224 long mLaunchStartTime = 0; 225 long mFullyDrawnStartTime = 0; 226 227 /** 228 * Save the most recent screenshot for reuse. This keeps Recents from taking two identical 229 * screenshots, one for the Recents thumbnail and one for the pauseActivity thumbnail. 230 */ 231 private ActivityRecord mLastScreenshotActivity = null; 232 private Bitmap mLastScreenshotBitmap = null; 233 234 int mThumbnailWidth = -1; 235 int mThumbnailHeight = -1; 236 237 int mCurrentUser; 238 239 final int mStackId; 240 final ActivityContainer mActivityContainer; 241 /** The other stacks, in order, on the attached display. Updated at attach/detach time. */ 242 ArrayList<ActivityStack> mStacks; 243 /** The attached Display's unique identifier, or -1 if detached */ 244 int mDisplayId; 245 246 /** Run all ActivityStacks through this */ 247 final ActivityStackSupervisor mStackSupervisor; 248 249 static final int PAUSE_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 1; 250 static final int DESTROY_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 2; 251 static final int LAUNCH_TICK_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 3; 252 static final int STOP_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 4; 253 static final int DESTROY_ACTIVITIES_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 5; 254 static final int TRANSLUCENT_TIMEOUT_MSG = ActivityManagerService.FIRST_ACTIVITY_STACK_MSG + 6; 255 256 static class ScheduleDestroyArgs { 257 final ProcessRecord mOwner; 258 final boolean mOomAdj; 259 final String mReason; 260 ScheduleDestroyArgs(ProcessRecord owner, boolean oomAdj, String reason) { 261 mOwner = owner; 262 mOomAdj = oomAdj; 263 mReason = reason; 264 } 265 } 266 267 final Handler mHandler; 268 269 final class ActivityStackHandler extends Handler { 270 //public Handler() { 271 // if (localLOGV) Slog.v(TAG, "Handler started!"); 272 //} 273 ActivityStackHandler(Looper looper) { 274 super(looper); 275 } 276 277 @Override 278 public void handleMessage(Message msg) { 279 switch (msg.what) { 280 case PAUSE_TIMEOUT_MSG: { 281 ActivityRecord r = (ActivityRecord)msg.obj; 282 // We don't at this point know if the activity is fullscreen, 283 // so we need to be conservative and assume it isn't. 284 Slog.w(TAG, "Activity pause timeout for " + r); 285 synchronized (mService) { 286 if (r.app != null) { 287 mService.logAppTooSlow(r.app, r.pauseTime, "pausing " + r); 288 } 289 activityPausedLocked(r.appToken, true, r.persistentState); 290 } 291 } break; 292 case LAUNCH_TICK_MSG: { 293 ActivityRecord r = (ActivityRecord)msg.obj; 294 synchronized (mService) { 295 if (r.continueLaunchTickingLocked()) { 296 mService.logAppTooSlow(r.app, r.launchTickTime, "launching " + r); 297 } 298 } 299 } break; 300 case DESTROY_TIMEOUT_MSG: { 301 ActivityRecord r = (ActivityRecord)msg.obj; 302 // We don't at this point know if the activity is fullscreen, 303 // so we need to be conservative and assume it isn't. 304 Slog.w(TAG, "Activity destroy timeout for " + r); 305 synchronized (mService) { 306 activityDestroyedLocked(r != null ? r.appToken : null); 307 } 308 } break; 309 case STOP_TIMEOUT_MSG: { 310 ActivityRecord r = (ActivityRecord)msg.obj; 311 // We don't at this point know if the activity is fullscreen, 312 // so we need to be conservative and assume it isn't. 313 Slog.w(TAG, "Activity stop timeout for " + r); 314 synchronized (mService) { 315 if (r.isInHistory()) { 316 activityStoppedLocked(r, null, null, null); 317 } 318 } 319 } break; 320 case DESTROY_ACTIVITIES_MSG: { 321 ScheduleDestroyArgs args = (ScheduleDestroyArgs)msg.obj; 322 synchronized (mService) { 323 destroyActivitiesLocked(args.mOwner, args.mOomAdj, args.mReason); 324 } 325 } break; 326 case TRANSLUCENT_TIMEOUT_MSG: { 327 synchronized (mService) { 328 notifyActivityDrawnLocked(null); 329 } 330 } break; 331 } 332 } 333 } 334 335 int numActivities() { 336 int count = 0; 337 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 338 count += mTaskHistory.get(taskNdx).mActivities.size(); 339 } 340 return count; 341 } 342 343 ActivityStack(ActivityStackSupervisor.ActivityContainer activityContainer) { 344 mActivityContainer = activityContainer; 345 mStackSupervisor = activityContainer.getOuter(); 346 mService = mStackSupervisor.mService; 347 mHandler = new ActivityStackHandler(mService.mHandler.getLooper()); 348 mWindowManager = mService.mWindowManager; 349 mStackId = activityContainer.mStackId; 350 mCurrentUser = mService.mCurrentUserId; 351 // Get the activity screenshot thumbnail dimensions 352 Resources res = mService.mContext.getResources(); 353 mThumbnailWidth = res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_width); 354 mThumbnailHeight = res.getDimensionPixelSize(com.android.internal.R.dimen.thumbnail_height); 355 } 356 357 /** 358 * Checks whether the userid is a profile of the current user. 359 */ 360 private boolean isCurrentProfileLocked(int userId) { 361 if (userId == mCurrentUser) return true; 362 for (int i = 0; i < mService.mCurrentProfileIds.length; i++) { 363 if (mService.mCurrentProfileIds[i] == userId) return true; 364 } 365 return false; 366 } 367 368 boolean okToShowLocked(ActivityRecord r) { 369 return isCurrentProfileLocked(r.userId) 370 || (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0; 371 } 372 373 final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { 374 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 375 ActivityRecord r = mTaskHistory.get(taskNdx).topRunningActivityLocked(notTop); 376 if (r != null) { 377 return r; 378 } 379 } 380 return null; 381 } 382 383 final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { 384 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 385 final TaskRecord task = mTaskHistory.get(taskNdx); 386 final ArrayList<ActivityRecord> activities = task.mActivities; 387 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 388 ActivityRecord r = activities.get(activityNdx); 389 if (!r.finishing && !r.delayedResume && r != notTop && okToShowLocked(r)) { 390 return r; 391 } 392 } 393 } 394 return null; 395 } 396 397 /** 398 * This is a simplified version of topRunningActivityLocked that provides a number of 399 * optional skip-over modes. It is intended for use with the ActivityController hook only. 400 * 401 * @param token If non-null, any history records matching this token will be skipped. 402 * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. 403 * 404 * @return Returns the HistoryRecord of the next activity on the stack. 405 */ 406 final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { 407 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 408 TaskRecord task = mTaskHistory.get(taskNdx); 409 if (task.taskId == taskId) { 410 continue; 411 } 412 ArrayList<ActivityRecord> activities = task.mActivities; 413 for (int i = activities.size() - 1; i >= 0; --i) { 414 final ActivityRecord r = activities.get(i); 415 // Note: the taskId check depends on real taskId fields being non-zero 416 if (!r.finishing && (token != r.appToken) && okToShowLocked(r)) { 417 return r; 418 } 419 } 420 } 421 return null; 422 } 423 424 final ActivityRecord topActivity() { 425 // Iterate to find the first non-empty task stack. Note that this code can 426 // be simplified once we stop storing tasks with empty mActivities lists. 427 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 428 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 429 final int topActivityNdx = activities.size() - 1; 430 if (topActivityNdx >= 0) { 431 return activities.get(topActivityNdx); 432 } 433 } 434 return null; 435 } 436 437 final TaskRecord topTask() { 438 final int size = mTaskHistory.size(); 439 if (size > 0) { 440 return mTaskHistory.get(size - 1); 441 } 442 return null; 443 } 444 445 TaskRecord taskForIdLocked(int id) { 446 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 447 final TaskRecord task = mTaskHistory.get(taskNdx); 448 if (task.taskId == id) { 449 return task; 450 } 451 } 452 return null; 453 } 454 455 ActivityRecord isInStackLocked(IBinder token) { 456 final ActivityRecord r = ActivityRecord.forToken(token); 457 if (r != null) { 458 final TaskRecord task = r.task; 459 if (task.mActivities.contains(r) && mTaskHistory.contains(task)) { 460 if (task.stack != this) Slog.w(TAG, 461 "Illegal state! task does not point to stack it is in."); 462 return r; 463 } 464 } 465 return null; 466 } 467 468 final boolean updateLRUListLocked(ActivityRecord r) { 469 final boolean hadit = mLRUActivities.remove(r); 470 mLRUActivities.add(r); 471 return hadit; 472 } 473 474 final boolean isHomeStack() { 475 return mStackId == HOME_STACK_ID; 476 } 477 478 final boolean isOnHomeDisplay() { 479 return isAttached() && 480 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY; 481 } 482 483 final void moveToFront() { 484 if (isAttached()) { 485 if (isOnHomeDisplay()) { 486 mStackSupervisor.moveHomeStack(isHomeStack()); 487 } 488 mStacks.remove(this); 489 mStacks.add(this); 490 } 491 } 492 493 final boolean isAttached() { 494 return mStacks != null; 495 } 496 497 /** 498 * Returns the top activity in any existing task matching the given 499 * Intent. Returns null if no such task is found. 500 */ 501 ActivityRecord findTaskLocked(ActivityRecord target) { 502 Intent intent = target.intent; 503 ActivityInfo info = target.info; 504 ComponentName cls = intent.getComponent(); 505 if (info.targetActivity != null) { 506 cls = new ComponentName(info.packageName, info.targetActivity); 507 } 508 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 509 boolean isDocument = intent != null & intent.isDocument(); 510 // If documentData is non-null then it must match the existing task data. 511 Uri documentData = isDocument ? intent.getData() : null; 512 513 if (DEBUG_TASKS) Slog.d(TAG, "Looking for task of " + target + " in " + this); 514 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 515 final TaskRecord task = mTaskHistory.get(taskNdx); 516 if (task.voiceSession != null) { 517 // We never match voice sessions; those always run independently. 518 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": voice session"); 519 continue; 520 } 521 if (task.userId != userId) { 522 // Looking for a different task. 523 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": different user"); 524 continue; 525 } 526 final ActivityRecord r = task.getTopActivity(); 527 if (r == null || r.finishing || r.userId != userId || 528 r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { 529 if (DEBUG_TASKS) Slog.d(TAG, "Skipping " + task + ": mismatch root " + r); 530 continue; 531 } 532 533 final Intent taskIntent = task.intent; 534 final Intent affinityIntent = task.affinityIntent; 535 final boolean taskIsDocument; 536 final Uri taskDocumentData; 537 if (taskIntent != null && taskIntent.isDocument()) { 538 taskIsDocument = true; 539 taskDocumentData = taskIntent.getData(); 540 } else if (affinityIntent != null && affinityIntent.isDocument()) { 541 taskIsDocument = true; 542 taskDocumentData = affinityIntent.getData(); 543 } else { 544 taskIsDocument = false; 545 taskDocumentData = null; 546 } 547 548 if (DEBUG_TASKS) Slog.d(TAG, "Comparing existing cls=" 549 + taskIntent.getComponent().flattenToShortString() 550 + "/aff=" + r.task.affinity + " to new cls=" 551 + intent.getComponent().flattenToShortString() + "/aff=" + info.taskAffinity); 552 if (!isDocument && !taskIsDocument && task.affinity != null) { 553 if (task.affinity.equals(target.taskAffinity)) { 554 if (DEBUG_TASKS) Slog.d(TAG, "Found matching affinity!"); 555 return r; 556 } 557 } else if (taskIntent != null && taskIntent.getComponent() != null && 558 taskIntent.getComponent().compareTo(cls) == 0 && 559 Objects.equals(documentData, taskDocumentData)) { 560 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 561 //dump(); 562 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 563 + r.intent); 564 return r; 565 } else if (affinityIntent != null && affinityIntent.getComponent() != null && 566 affinityIntent.getComponent().compareTo(cls) == 0 && 567 Objects.equals(documentData, taskDocumentData)) { 568 if (DEBUG_TASKS) Slog.d(TAG, "Found matching class!"); 569 //dump(); 570 if (DEBUG_TASKS) Slog.d(TAG, "For Intent " + intent + " bringing to top: " 571 + r.intent); 572 return r; 573 } else if (DEBUG_TASKS) { 574 Slog.d(TAG, "Not a match: " + task); 575 } 576 } 577 578 return null; 579 } 580 581 /** 582 * Returns the first activity (starting from the top of the stack) that 583 * is the same as the given activity. Returns null if no such activity 584 * is found. 585 */ 586 ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { 587 ComponentName cls = intent.getComponent(); 588 if (info.targetActivity != null) { 589 cls = new ComponentName(info.packageName, info.targetActivity); 590 } 591 final int userId = UserHandle.getUserId(info.applicationInfo.uid); 592 593 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 594 TaskRecord task = mTaskHistory.get(taskNdx); 595 if (!isCurrentProfileLocked(task.userId)) { 596 return null; 597 } 598 final ArrayList<ActivityRecord> activities = task.mActivities; 599 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 600 ActivityRecord r = activities.get(activityNdx); 601 if (!r.finishing && r.intent.getComponent().equals(cls) && r.userId == userId) { 602 //Slog.i(TAG, "Found matching class!"); 603 //dump(); 604 //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); 605 return r; 606 } 607 } 608 } 609 610 return null; 611 } 612 613 /* 614 * Move the activities around in the stack to bring a user to the foreground. 615 */ 616 final void switchUserLocked(int userId) { 617 if (mCurrentUser == userId) { 618 return; 619 } 620 mCurrentUser = userId; 621 622 // Move userId's tasks to the top. 623 int index = mTaskHistory.size(); 624 for (int i = 0; i < index; ) { 625 TaskRecord task = mTaskHistory.get(i); 626 if (isCurrentProfileLocked(task.userId)) { 627 if (DEBUG_TASKS) Slog.d(TAG, "switchUserLocked: stack=" + getStackId() + 628 " moving " + task + " to top"); 629 mTaskHistory.remove(i); 630 mTaskHistory.add(task); 631 --index; 632 // Use same value for i. 633 } else { 634 ++i; 635 } 636 } 637 if (VALIDATE_TOKENS) { 638 validateAppTokensLocked(); 639 } 640 } 641 642 void minimalResumeActivityLocked(ActivityRecord r) { 643 r.state = ActivityState.RESUMED; 644 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + r 645 + " (starting new instance)"); 646 r.stopped = false; 647 mResumedActivity = r; 648 r.task.touchActiveTime(); 649 mService.addRecentTaskLocked(r.task); 650 completeResumeLocked(r); 651 mStackSupervisor.checkReadyForSleepLocked(); 652 setLaunchTime(r); 653 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Launch completed; removing icicle of " + r.icicle); 654 } 655 656 private void startLaunchTraces() { 657 if (mFullyDrawnStartTime != 0) { 658 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 659 } 660 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0); 661 Trace.asyncTraceBegin(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 662 } 663 664 private void stopFullyDrawnTraceIfNeeded() { 665 if (mFullyDrawnStartTime != 0 && mLaunchStartTime == 0) { 666 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0); 667 mFullyDrawnStartTime = 0; 668 } 669 } 670 671 void setLaunchTime(ActivityRecord r) { 672 if (r.displayStartTime == 0) { 673 r.fullyDrawnStartTime = r.displayStartTime = SystemClock.uptimeMillis(); 674 if (mLaunchStartTime == 0) { 675 startLaunchTraces(); 676 mLaunchStartTime = mFullyDrawnStartTime = r.displayStartTime; 677 } 678 } else if (mLaunchStartTime == 0) { 679 startLaunchTraces(); 680 mLaunchStartTime = mFullyDrawnStartTime = SystemClock.uptimeMillis(); 681 } 682 } 683 684 void clearLaunchTime(ActivityRecord r) { 685 // Make sure that there is no activity waiting for this to launch. 686 if (mStackSupervisor.mWaitingActivityLaunched.isEmpty()) { 687 r.displayStartTime = r.fullyDrawnStartTime = 0; 688 } else { 689 mStackSupervisor.removeTimeoutsForActivityLocked(r); 690 mStackSupervisor.scheduleIdleTimeoutLocked(r); 691 } 692 } 693 694 void awakeFromSleepingLocked() { 695 // Ensure activities are no longer sleeping. 696 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 697 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 698 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 699 activities.get(activityNdx).setSleeping(false); 700 } 701 } 702 } 703 704 /** 705 * @return true if something must be done before going to sleep. 706 */ 707 boolean checkReadyForSleepLocked() { 708 if (mResumedActivity != null) { 709 // Still have something resumed; can't sleep until it is paused. 710 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause " + mResumedActivity); 711 if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); 712 startPausingLocked(false, true); 713 return true; 714 } 715 if (mPausingActivity != null) { 716 // Still waiting for something to pause; can't sleep yet. 717 if (DEBUG_PAUSE) Slog.v(TAG, "Sleep still waiting to pause " + mPausingActivity); 718 return true; 719 } 720 721 return false; 722 } 723 724 void goToSleep() { 725 ensureActivitiesVisibleLocked(null, 0); 726 727 // Make sure any stopped but visible activities are now sleeping. 728 // This ensures that the activity's onStop() is called. 729 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 730 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 731 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 732 final ActivityRecord r = activities.get(activityNdx); 733 if (r.state == ActivityState.STOPPING || r.state == ActivityState.STOPPED) { 734 r.setSleeping(true); 735 } 736 } 737 } 738 } 739 740 /** 741 * This resets the saved state from the last screenshot, forcing a new screenshot to be taken 742 * again when requested. 743 */ 744 private void invalidateLastScreenshot() { 745 mLastScreenshotActivity = null; 746 if (mLastScreenshotBitmap != null) { 747 mLastScreenshotBitmap.recycle(); 748 } 749 mLastScreenshotBitmap = null; 750 } 751 752 public final Bitmap screenshotActivities(ActivityRecord who) { 753 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "screenshotActivities: " + who); 754 if (who.noDisplay) { 755 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tNo display"); 756 return null; 757 } 758 759 TaskRecord tr = who.task; 760 if (mService.getMostRecentTask() != tr || isHomeStack()) { 761 // This is an optimization -- since we never show Home or Recents within Recents itself, 762 // we can just go ahead and skip taking the screenshot if this is the home stack. In 763 // the case where the most recent task is not the task that was supplied, then the stack 764 // has changed, so invalidate the last screenshot(). 765 invalidateLastScreenshot(); 766 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tIs Home stack? " + isHomeStack()); 767 return null; 768 } 769 770 int w = mThumbnailWidth; 771 int h = mThumbnailHeight; 772 if (w > 0) { 773 if (who != mLastScreenshotActivity || mLastScreenshotBitmap == null 774 || mLastScreenshotActivity.state == ActivityState.RESUMED 775 || mLastScreenshotBitmap.getWidth() != w 776 || mLastScreenshotBitmap.getHeight() != h) { 777 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tUpdating screenshot"); 778 mLastScreenshotActivity = who; 779 mLastScreenshotBitmap = mWindowManager.screenshotApplications( 780 who.appToken, Display.DEFAULT_DISPLAY, w, h, SCREENSHOT_FORCE_565); 781 } 782 if (mLastScreenshotBitmap != null) { 783 if (DEBUG_SCREENSHOTS) Slog.d(TAG, "\tReusing last screenshot"); 784 return mLastScreenshotBitmap.copy(mLastScreenshotBitmap.getConfig(), true); 785 } 786 } 787 Slog.e(TAG, "Invalid thumbnail dimensions: " + w + "x" + h); 788 return null; 789 } 790 791 final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { 792 if (mPausingActivity != null) { 793 Slog.e(TAG, "Trying to pause when pause is already pending for " 794 + mPausingActivity, new RuntimeException("here").fillInStackTrace()); 795 } 796 ActivityRecord prev = mResumedActivity; 797 if (prev == null) { 798 Slog.e(TAG, "Trying to pause when nothing is resumed", 799 new RuntimeException("here").fillInStackTrace()); 800 mStackSupervisor.resumeTopActivitiesLocked(); 801 return; 802 } 803 804 if (mActivityContainer.mParentActivity == null) { 805 // Top level stack, not a child. Look for child stacks. 806 mStackSupervisor.pauseChildStacks(prev, userLeaving, uiSleeping); 807 } 808 809 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSING: " + prev); 810 else if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); 811 mResumedActivity = null; 812 mPausingActivity = prev; 813 mLastPausedActivity = prev; 814 mLastNoHistoryActivity = (prev.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 815 || (prev.info.flags & ActivityInfo.FLAG_NO_HISTORY) != 0 ? prev : null; 816 prev.state = ActivityState.PAUSING; 817 prev.task.touchActiveTime(); 818 clearLaunchTime(prev); 819 final ActivityRecord next = mStackSupervisor.topRunningActivityLocked(); 820 if (next == null || next.noDisplay || next.task != prev.task) { 821 prev.updateThumbnail(screenshotActivities(prev), null); 822 } 823 stopFullyDrawnTraceIfNeeded(); 824 825 mService.updateCpuStats(); 826 827 if (prev.app != null && prev.app.thread != null) { 828 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); 829 try { 830 EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, 831 prev.userId, System.identityHashCode(prev), 832 prev.shortComponentName); 833 mService.updateUsageStats(prev, false); 834 prev.app.thread.schedulePauseActivity(prev.appToken, prev.finishing, 835 userLeaving, prev.configChangeFlags); 836 } catch (Exception e) { 837 // Ignore exception, if process died other code will cleanup. 838 Slog.w(TAG, "Exception thrown during pause", e); 839 mPausingActivity = null; 840 mLastPausedActivity = null; 841 mLastNoHistoryActivity = null; 842 } 843 } else { 844 mPausingActivity = null; 845 mLastPausedActivity = null; 846 mLastNoHistoryActivity = null; 847 } 848 849 // If we are not going to sleep, we want to ensure the device is 850 // awake until the next activity is started. 851 if (!mService.isSleepingOrShuttingDown()) { 852 mStackSupervisor.acquireLaunchWakelock(); 853 } 854 855 if (mPausingActivity != null) { 856 // Have the window manager pause its key dispatching until the new 857 // activity has started. If we're pausing the activity just because 858 // the screen is being turned off and the UI is sleeping, don't interrupt 859 // key dispatch; the same activity will pick it up again on wakeup. 860 if (!uiSleeping) { 861 prev.pauseKeyDispatchingLocked(); 862 } else { 863 if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); 864 } 865 866 // Schedule a pause timeout in case the app doesn't respond. 867 // We don't give it much time because this directly impacts the 868 // responsiveness seen by the user. 869 Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); 870 msg.obj = prev; 871 prev.pauseTime = SystemClock.uptimeMillis(); 872 mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); 873 if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); 874 } else { 875 // This activity failed to schedule the 876 // pause, so just treat it as being paused now. 877 if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); 878 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 879 } 880 } 881 882 final void activityPausedLocked(IBinder token, boolean timeout, 883 PersistableBundle persistentState) { 884 if (DEBUG_PAUSE) Slog.v( 885 TAG, "Activity paused: token=" + token + ", timeout=" + timeout); 886 887 final ActivityRecord r = isInStackLocked(token); 888 if (r != null) { 889 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 890 if (persistentState != null) { 891 r.persistentState = persistentState; 892 mService.notifyTaskPersisterLocked(r.task, false); 893 } 894 if (mPausingActivity == r) { 895 if (DEBUG_STATES) Slog.v(TAG, "Moving to PAUSED: " + r 896 + (timeout ? " (due to timeout)" : " (pause complete)")); 897 r.state = ActivityState.PAUSED; 898 completePauseLocked(); 899 } else { 900 EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, 901 r.userId, System.identityHashCode(r), r.shortComponentName, 902 mPausingActivity != null 903 ? mPausingActivity.shortComponentName : "(none)"); 904 } 905 } 906 } 907 908 final void activityStoppedLocked(ActivityRecord r, Bundle icicle, 909 PersistableBundle persistentState, CharSequence description) { 910 if (r.state != ActivityState.STOPPING) { 911 Slog.i(TAG, "Activity reported stop, but no longer stopping: " + r); 912 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 913 return; 914 } 915 if (persistentState != null) { 916 r.persistentState = persistentState; 917 mService.notifyTaskPersisterLocked(r.task, false); 918 } 919 if (DEBUG_SAVED_STATE) Slog.i(TAG, "Saving icicle of " + r + ": " + icicle); 920 if (icicle != null) { 921 // If icicle is null, this is happening due to a timeout, so we 922 // haven't really saved the state. 923 r.icicle = icicle; 924 r.haveState = true; 925 r.launchCount = 0; 926 r.updateThumbnail(null, description); 927 } 928 if (!r.stopped) { 929 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPED: " + r + " (stop complete)"); 930 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 931 r.stopped = true; 932 r.state = ActivityState.STOPPED; 933 if (r.finishing) { 934 r.clearOptionsLocked(); 935 } else { 936 if (r.configDestroy) { 937 destroyActivityLocked(r, true, false, "stop-config"); 938 mStackSupervisor.resumeTopActivitiesLocked(); 939 } else { 940 mStackSupervisor.updatePreviousProcessLocked(r); 941 } 942 } 943 } 944 } 945 946 private void completePauseLocked() { 947 ActivityRecord prev = mPausingActivity; 948 if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); 949 950 if (prev != null) { 951 if (prev.finishing) { 952 if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); 953 prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE, false); 954 } else if (prev.app != null) { 955 if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); 956 if (prev.waitingVisible) { 957 prev.waitingVisible = false; 958 mStackSupervisor.mWaitingVisibleActivities.remove(prev); 959 if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( 960 TAG, "Complete pause, no longer waiting: " + prev); 961 } 962 if (prev.configDestroy) { 963 // The previous is being paused because the configuration 964 // is changing, which means it is actually stopping... 965 // To juggle the fact that we are also starting a new 966 // instance right now, we need to first completely stop 967 // the current instance before starting the new one. 968 if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); 969 destroyActivityLocked(prev, true, false, "pause-config"); 970 } else { 971 mStackSupervisor.mStoppingActivities.add(prev); 972 if (mStackSupervisor.mStoppingActivities.size() > 3 || 973 prev.frontOfTask && mTaskHistory.size() <= 1) { 974 // If we already have a few activities waiting to stop, 975 // then give up on things going idle and start clearing 976 // them out. Or if r is the last of activity of the last task the stack 977 // will be empty and must be cleared immediately. 978 if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); 979 mStackSupervisor.scheduleIdleLocked(); 980 } else { 981 mStackSupervisor.checkReadyForSleepLocked(); 982 } 983 } 984 } else { 985 if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); 986 prev = null; 987 } 988 mPausingActivity = null; 989 } 990 991 final ActivityStack topStack = mStackSupervisor.getFocusedStack(); 992 if (!mService.isSleepingOrShuttingDown()) { 993 mStackSupervisor.resumeTopActivitiesLocked(topStack, prev, null); 994 } else { 995 mStackSupervisor.checkReadyForSleepLocked(); 996 ActivityRecord top = topStack.topRunningActivityLocked(null); 997 if (top == null || (prev != null && top != prev)) { 998 // If there are no more activities available to run, 999 // do resume anyway to start something. Also if the top 1000 // activity on the stack is not the just paused activity, 1001 // we need to go ahead and resume it to ensure we complete 1002 // an in-flight app switch. 1003 mStackSupervisor.resumeTopActivitiesLocked(topStack, null, null); 1004 } 1005 } 1006 1007 if (prev != null) { 1008 prev.resumeKeyDispatchingLocked(); 1009 1010 if (prev.app != null && prev.cpuTimeAtResume > 0 1011 && mService.mBatteryStatsService.isOnBattery()) { 1012 long diff; 1013 synchronized (mService.mProcessCpuThread) { 1014 diff = mService.mProcessCpuTracker.getCpuTimeForPid(prev.app.pid) 1015 - prev.cpuTimeAtResume; 1016 } 1017 if (diff > 0) { 1018 BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); 1019 synchronized (bsi) { 1020 BatteryStatsImpl.Uid.Proc ps = 1021 bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, 1022 prev.info.packageName); 1023 if (ps != null) { 1024 ps.addForegroundTimeLocked(diff); 1025 } 1026 } 1027 } 1028 } 1029 prev.cpuTimeAtResume = 0; // reset it 1030 } 1031 } 1032 1033 /** 1034 * Once we know that we have asked an application to put an activity in 1035 * the resumed state (either by launching it or explicitly telling it), 1036 * this function updates the rest of our state to match that fact. 1037 */ 1038 private void completeResumeLocked(ActivityRecord next) { 1039 next.idle = false; 1040 next.results = null; 1041 next.newIntents = null; 1042 if (next.nowVisible) { 1043 // We won't get a call to reportActivityVisibleLocked() so dismiss lockscreen now. 1044 mStackSupervisor.dismissKeyguard(); 1045 } 1046 1047 // schedule an idle timeout in case the app doesn't do it for us. 1048 mStackSupervisor.scheduleIdleTimeoutLocked(next); 1049 1050 mStackSupervisor.reportResumedActivityLocked(next); 1051 1052 next.resumeKeyDispatchingLocked(); 1053 mNoAnimActivities.clear(); 1054 1055 // Mark the point when the activity is resuming 1056 // TODO: To be more accurate, the mark should be before the onCreate, 1057 // not after the onResume. But for subsequent starts, onResume is fine. 1058 if (next.app != null) { 1059 synchronized (mService.mProcessCpuThread) { 1060 next.cpuTimeAtResume = mService.mProcessCpuTracker.getCpuTimeForPid(next.app.pid); 1061 } 1062 } else { 1063 next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process 1064 } 1065 1066 // If we are resuming the activity that we had last screenshotted, then we know it will be 1067 // updated, so invalidate the last screenshot to ensure we take a fresh one when requested 1068 if (next == mLastScreenshotActivity) { 1069 invalidateLastScreenshot(); 1070 } 1071 } 1072 1073 private void setVisibile(ActivityRecord r, boolean visible) { 1074 r.visible = visible; 1075 mWindowManager.setAppVisibility(r.appToken, visible); 1076 final ArrayList<ActivityContainer> containers = r.mChildContainers; 1077 for (int containerNdx = containers.size() - 1; containerNdx >= 0; --containerNdx) { 1078 ActivityContainer container = containers.get(containerNdx); 1079 container.setVisible(visible); 1080 } 1081 } 1082 1083 // Checks if any of the stacks above this one has a fullscreen activity behind it. 1084 // If so, this stack is hidden, otherwise it is visible. 1085 private boolean isStackVisible() { 1086 if (!isAttached()) { 1087 return false; 1088 } 1089 1090 if (mStackSupervisor.isFrontStack(this)) { 1091 return true; 1092 } 1093 1094 /** 1095 * Start at the task above this one and go up, looking for a visible 1096 * fullscreen activity, or a translucent activity that requested the 1097 * wallpaper to be shown behind it. 1098 */ 1099 for (int i = mStacks.indexOf(this) + 1; i < mStacks.size(); i++) { 1100 final ArrayList<TaskRecord> tasks = mStacks.get(i).getAllTasks(); 1101 for (int taskNdx = 0; taskNdx < tasks.size(); taskNdx++) { 1102 final TaskRecord task = tasks.get(taskNdx); 1103 final ArrayList<ActivityRecord> activities = task.mActivities; 1104 for (int activityNdx = 0; activityNdx < activities.size(); activityNdx++) { 1105 final ActivityRecord r = activities.get(activityNdx); 1106 1107 // Conditions for an activity to obscure the stack we're 1108 // examining: 1109 // 1. Not Finishing AND Visible AND: 1110 // 2. Either: 1111 // - Full Screen Activity OR 1112 // - On top of Home and our stack is NOT home 1113 if (!r.finishing && r.visible && (r.fullscreen || 1114 (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()))) { 1115 return false; 1116 } 1117 } 1118 } 1119 } 1120 1121 return true; 1122 } 1123 1124 final void ensureActivitiesVisibleLocked(ActivityRecord starting, int configChanges) { 1125 ActivityRecord r = topRunningActivityLocked(null); 1126 if (r != null) { 1127 ensureActivitiesVisibleLocked(r, starting, null, configChanges); 1128 } 1129 } 1130 1131 /** 1132 * Make sure that all activities that need to be visible (that is, they 1133 * currently can be seen by the user) actually are. 1134 */ 1135 final void ensureActivitiesVisibleLocked(ActivityRecord top, ActivityRecord starting, 1136 String onlyThisProcess, int configChanges) { 1137 if (DEBUG_VISBILITY) Slog.v( 1138 TAG, "ensureActivitiesVisible behind " + top 1139 + " configChanges=0x" + Integer.toHexString(configChanges)); 1140 1141 if (mTranslucentActivityWaiting != top) { 1142 mUndrawnActivitiesBelowTopTranslucent.clear(); 1143 if (mTranslucentActivityWaiting != null) { 1144 // Call the callback with a timeout indication. 1145 notifyActivityDrawnLocked(null); 1146 mTranslucentActivityWaiting = null; 1147 } 1148 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1149 } 1150 1151 // If the top activity is not fullscreen, then we need to 1152 // make sure any activities under it are now visible. 1153 boolean aboveTop = true; 1154 boolean behindFullscreen = !isStackVisible(); 1155 1156 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1157 final TaskRecord task = mTaskHistory.get(taskNdx); 1158 final ArrayList<ActivityRecord> activities = task.mActivities; 1159 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1160 final ActivityRecord r = activities.get(activityNdx); 1161 if (r.finishing) { 1162 continue; 1163 } 1164 if (aboveTop && r != top) { 1165 continue; 1166 } 1167 aboveTop = false; 1168 if (!behindFullscreen) { 1169 if (DEBUG_VISBILITY) Slog.v( 1170 TAG, "Make visible? " + r + " finishing=" + r.finishing 1171 + " state=" + r.state); 1172 1173 final boolean doThisProcess = onlyThisProcess == null 1174 || onlyThisProcess.equals(r.processName); 1175 1176 // First: if this is not the current activity being started, make 1177 // sure it matches the current configuration. 1178 if (r != starting && doThisProcess) { 1179 ensureActivityConfigurationLocked(r, 0); 1180 } 1181 1182 if (r.app == null || r.app.thread == null) { 1183 if (onlyThisProcess == null || onlyThisProcess.equals(r.processName)) { 1184 // This activity needs to be visible, but isn't even 1185 // running... get it started, but don't resume it 1186 // at this point. 1187 if (DEBUG_VISBILITY) Slog.v(TAG, "Start and freeze screen for " + r); 1188 if (r != starting) { 1189 r.startFreezingScreenLocked(r.app, configChanges); 1190 } 1191 if (!r.visible) { 1192 if (DEBUG_VISBILITY) Slog.v( 1193 TAG, "Starting and making visible: " + r); 1194 setVisibile(r, true); 1195 } 1196 if (r != starting) { 1197 mStackSupervisor.startSpecificActivityLocked(r, false, false); 1198 } 1199 } 1200 1201 } else if (r.visible) { 1202 // If this activity is already visible, then there is nothing 1203 // else to do here. 1204 if (DEBUG_VISBILITY) Slog.v(TAG, "Skipping: already visible at " + r); 1205 r.stopFreezingScreenLocked(false); 1206 1207 } else if (onlyThisProcess == null) { 1208 // This activity is not currently visible, but is running. 1209 // Tell it to become visible. 1210 r.visible = true; 1211 if (r.state != ActivityState.RESUMED && r != starting) { 1212 // If this activity is paused, tell it 1213 // to now show its window. 1214 if (DEBUG_VISBILITY) Slog.v( 1215 TAG, "Making visible and scheduling visibility: " + r); 1216 try { 1217 if (mTranslucentActivityWaiting != null) { 1218 r.updateOptionsLocked(mReturningActivityOptions); 1219 mUndrawnActivitiesBelowTopTranslucent.add(r); 1220 } 1221 setVisibile(r, true); 1222 r.sleeping = false; 1223 r.app.pendingUiClean = true; 1224 r.app.thread.scheduleWindowVisibility(r.appToken, true); 1225 r.stopFreezingScreenLocked(false); 1226 } catch (Exception e) { 1227 // Just skip on any failure; we'll make it 1228 // visible when it next restarts. 1229 Slog.w(TAG, "Exception thrown making visibile: " 1230 + r.intent.getComponent(), e); 1231 } 1232 } 1233 } 1234 1235 // Aggregate current change flags. 1236 configChanges |= r.configChangeFlags; 1237 1238 if (r.fullscreen) { 1239 // At this point, nothing else needs to be shown 1240 if (DEBUG_VISBILITY) Slog.v(TAG, "Fullscreen: at " + r); 1241 behindFullscreen = true; 1242 } else if (!isHomeStack() && r.frontOfTask && task.isOverHomeStack()) { 1243 if (DEBUG_VISBILITY) Slog.v(TAG, "Showing home: at " + r); 1244 behindFullscreen = true; 1245 } 1246 } else { 1247 if (DEBUG_VISBILITY) Slog.v( 1248 TAG, "Make invisible? " + r + " finishing=" + r.finishing 1249 + " state=" + r.state 1250 + " behindFullscreen=" + behindFullscreen); 1251 // Now for any activities that aren't visible to the user, make 1252 // sure they no longer are keeping the screen frozen. 1253 if (r.visible) { 1254 if (DEBUG_VISBILITY) Slog.v(TAG, "Making invisible: " + r); 1255 try { 1256 setVisibile(r, false); 1257 switch (r.state) { 1258 case STOPPING: 1259 case STOPPED: 1260 if (r.app != null && r.app.thread != null) { 1261 if (DEBUG_VISBILITY) Slog.v( 1262 TAG, "Scheduling invisibility: " + r); 1263 r.app.thread.scheduleWindowVisibility(r.appToken, false); 1264 } 1265 break; 1266 1267 case INITIALIZING: 1268 case RESUMED: 1269 case PAUSING: 1270 case PAUSED: 1271 // This case created for transitioning activities from 1272 // translucent to opaque {@link Activity#convertToOpaque}. 1273 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 1274 mStackSupervisor.mStoppingActivities.add(r); 1275 } 1276 mStackSupervisor.scheduleIdleLocked(); 1277 break; 1278 1279 default: 1280 break; 1281 } 1282 } catch (Exception e) { 1283 // Just skip on any failure; we'll make it 1284 // visible when it next restarts. 1285 Slog.w(TAG, "Exception thrown making hidden: " 1286 + r.intent.getComponent(), e); 1287 } 1288 } else { 1289 if (DEBUG_VISBILITY) Slog.v(TAG, "Already invisible: " + r); 1290 } 1291 } 1292 } 1293 } 1294 } 1295 1296 void convertToTranslucent(ActivityRecord r, ActivityOptions options) { 1297 mTranslucentActivityWaiting = r; 1298 mUndrawnActivitiesBelowTopTranslucent.clear(); 1299 mReturningActivityOptions = options; 1300 mHandler.sendEmptyMessageDelayed(TRANSLUCENT_TIMEOUT_MSG, TRANSLUCENT_CONVERSION_TIMEOUT); 1301 } 1302 1303 /** 1304 * Called as activities below the top translucent activity are redrawn. When the last one is 1305 * redrawn notify the top activity by calling 1306 * {@link Activity#onTranslucentConversionComplete}. 1307 * 1308 * @param r The most recent background activity to be drawn. Or, if r is null then a timeout 1309 * occurred and the activity will be notified immediately. 1310 */ 1311 void notifyActivityDrawnLocked(ActivityRecord r) { 1312 mActivityContainer.setDrawn(); 1313 if ((r == null) 1314 || (mUndrawnActivitiesBelowTopTranslucent.remove(r) && 1315 mUndrawnActivitiesBelowTopTranslucent.isEmpty())) { 1316 // The last undrawn activity below the top has just been drawn. If there is an 1317 // opaque activity at the top, notify it that it can become translucent safely now. 1318 final ActivityRecord waitingActivity = mTranslucentActivityWaiting; 1319 mTranslucentActivityWaiting = null; 1320 mUndrawnActivitiesBelowTopTranslucent.clear(); 1321 mHandler.removeMessages(TRANSLUCENT_TIMEOUT_MSG); 1322 1323 if (waitingActivity != null) { 1324 mWindowManager.setWindowOpaque(waitingActivity.appToken, false); 1325 if (waitingActivity.app != null && waitingActivity.app.thread != null) { 1326 try { 1327 waitingActivity.app.thread.scheduleTranslucentConversionComplete( 1328 waitingActivity.appToken, r != null); 1329 } catch (RemoteException e) { 1330 } 1331 } 1332 } 1333 } 1334 } 1335 1336 /** If any activities below the top running one are in the INITIALIZING state and they have a 1337 * starting window displayed then remove that starting window. It is possible that the activity 1338 * in this state will never resumed in which case that starting window will be orphaned. */ 1339 void cancelInitializingActivities() { 1340 final ActivityRecord topActivity = topRunningActivityLocked(null); 1341 boolean aboveTop = true; 1342 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1343 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 1344 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 1345 final ActivityRecord r = activities.get(activityNdx); 1346 if (aboveTop) { 1347 if (r == topActivity) { 1348 aboveTop = false; 1349 } 1350 continue; 1351 } 1352 1353 if (r.state == ActivityState.INITIALIZING && r.mStartingWindowShown) { 1354 if (DEBUG_VISBILITY) Slog.w(TAG, "Found orphaned starting window " + r); 1355 r.mStartingWindowShown = false; 1356 mWindowManager.removeAppStartingWindow(r.appToken); 1357 } 1358 } 1359 } 1360 } 1361 1362 /** 1363 * Ensure that the top activity in the stack is resumed. 1364 * 1365 * @param prev The previously resumed activity, for when in the process 1366 * of pausing; can be null to call from elsewhere. 1367 * 1368 * @return Returns true if something is being resumed, or false if 1369 * nothing happened. 1370 */ 1371 final boolean resumeTopActivityLocked(ActivityRecord prev) { 1372 return resumeTopActivityLocked(prev, null); 1373 } 1374 1375 final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options) { 1376 if (ActivityManagerService.DEBUG_LOCKSCREEN) mService.logLockScreen(""); 1377 1378 ActivityRecord parent = mActivityContainer.mParentActivity; 1379 if ((parent != null && parent.state != ActivityState.RESUMED) || 1380 !mActivityContainer.isAttachedLocked()) { 1381 // Do not resume this stack if its parent is not resumed. 1382 // TODO: If in a loop, make sure that parent stack resumeTopActivity is called 1st. 1383 return false; 1384 } 1385 1386 cancelInitializingActivities(); 1387 1388 // Find the first activity that is not finishing. 1389 ActivityRecord next = topRunningActivityLocked(null); 1390 1391 // Remember how we'll process this pause/resume situation, and ensure 1392 // that the state is reset however we wind up proceeding. 1393 final boolean userLeaving = mStackSupervisor.mUserLeaving; 1394 mStackSupervisor.mUserLeaving = false; 1395 1396 final TaskRecord prevTask = prev != null ? prev.task : null; 1397 if (next == null) { 1398 // There are no more activities! Let's just start up the 1399 // Launcher... 1400 ActivityOptions.abort(options); 1401 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: No more activities go home"); 1402 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1403 // Only resume home if on home display 1404 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1405 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1406 return isOnHomeDisplay() && 1407 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1408 } 1409 1410 next.delayedResume = false; 1411 1412 // If the top activity is the resumed one, nothing to do. 1413 if (mResumedActivity == next && next.state == ActivityState.RESUMED && 1414 mStackSupervisor.allResumedActivitiesComplete()) { 1415 // Make sure we have executed any pending transitions, since there 1416 // should be nothing left to do at this point. 1417 mWindowManager.executeAppTransition(); 1418 mNoAnimActivities.clear(); 1419 ActivityOptions.abort(options); 1420 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Top activity resumed " + next); 1421 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1422 return false; 1423 } 1424 1425 final TaskRecord nextTask = next.task; 1426 if (prevTask != null && prevTask.stack == this && 1427 prevTask.isOverHomeStack() && prev.finishing && prev.frontOfTask) { 1428 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1429 if (prevTask == nextTask) { 1430 prevTask.setFrontOfTask(); 1431 } else if (prevTask != topTask()) { 1432 // This task is going away but it was supposed to return to the home stack. 1433 // Now the task above it has to return to the home task instead. 1434 final int taskNdx = mTaskHistory.indexOf(prevTask) + 1; 1435 mTaskHistory.get(taskNdx).setTaskToReturnTo(HOME_ACTIVITY_TYPE); 1436 } else { 1437 if (DEBUG_STATES && isOnHomeDisplay()) Slog.d(TAG, 1438 "resumeTopActivityLocked: Launching home next"); 1439 // Only resume home if on home display 1440 final int returnTaskType = prevTask == null || !prevTask.isOverHomeStack() ? 1441 HOME_ACTIVITY_TYPE : prevTask.getTaskToReturnTo(); 1442 return isOnHomeDisplay() && 1443 mStackSupervisor.resumeHomeStackTask(returnTaskType, prev); 1444 } 1445 } 1446 1447 // If we are sleeping, and there is no resumed activity, and the top 1448 // activity is paused, well that is the state we want. 1449 if (mService.isSleepingOrShuttingDown() 1450 && mLastPausedActivity == next 1451 && mStackSupervisor.allPausedActivitiesComplete()) { 1452 // Make sure we have executed any pending transitions, since there 1453 // should be nothing left to do at this point. 1454 mWindowManager.executeAppTransition(); 1455 mNoAnimActivities.clear(); 1456 ActivityOptions.abort(options); 1457 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Going to sleep and all paused"); 1458 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1459 return false; 1460 } 1461 1462 // Make sure that the user who owns this activity is started. If not, 1463 // we will just leave it as is because someone should be bringing 1464 // another user's activities to the top of the stack. 1465 if (mService.mStartedUsers.get(next.userId) == null) { 1466 Slog.w(TAG, "Skipping resume of top activity " + next 1467 + ": user " + next.userId + " is stopped"); 1468 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1469 return false; 1470 } 1471 1472 // The activity may be waiting for stop, but that is no longer 1473 // appropriate for it. 1474 mStackSupervisor.mStoppingActivities.remove(next); 1475 mStackSupervisor.mGoingToSleepActivities.remove(next); 1476 next.sleeping = false; 1477 mStackSupervisor.mWaitingVisibleActivities.remove(next); 1478 1479 if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); 1480 1481 // If we are currently pausing an activity, then don't do anything 1482 // until that is done. 1483 if (!mStackSupervisor.allPausedActivitiesComplete()) { 1484 if (DEBUG_SWITCH || DEBUG_PAUSE || DEBUG_STATES) Slog.v(TAG, 1485 "resumeTopActivityLocked: Skip resume: some activity pausing."); 1486 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1487 return false; 1488 } 1489 1490 // Okay we are now going to start a switch, to 'next'. We may first 1491 // have to pause the current activity, but this is an important point 1492 // where we have decided to go to 'next' so keep track of that. 1493 // XXX "App Redirected" dialog is getting too many false positives 1494 // at this point, so turn off for now. 1495 if (false) { 1496 if (mLastStartedActivity != null && !mLastStartedActivity.finishing) { 1497 long now = SystemClock.uptimeMillis(); 1498 final boolean inTime = mLastStartedActivity.startTime != 0 1499 && (mLastStartedActivity.startTime + START_WARN_TIME) >= now; 1500 final int lastUid = mLastStartedActivity.info.applicationInfo.uid; 1501 final int nextUid = next.info.applicationInfo.uid; 1502 if (inTime && lastUid != nextUid 1503 && lastUid != next.launchedFromUid 1504 && mService.checkPermission( 1505 android.Manifest.permission.STOP_APP_SWITCHES, 1506 -1, next.launchedFromUid) 1507 != PackageManager.PERMISSION_GRANTED) { 1508 mService.showLaunchWarningLocked(mLastStartedActivity, next); 1509 } else { 1510 next.startTime = now; 1511 mLastStartedActivity = next; 1512 } 1513 } else { 1514 next.startTime = SystemClock.uptimeMillis(); 1515 mLastStartedActivity = next; 1516 } 1517 } 1518 1519 // We need to start pausing the current activity so the top one 1520 // can be resumed... 1521 boolean pausing = mStackSupervisor.pauseBackStacks(userLeaving); 1522 if (mResumedActivity != null) { 1523 pausing = true; 1524 startPausingLocked(userLeaving, false); 1525 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Pausing " + mResumedActivity); 1526 } 1527 if (pausing) { 1528 if (DEBUG_SWITCH || DEBUG_STATES) Slog.v(TAG, 1529 "resumeTopActivityLocked: Skip resume: need to start pausing"); 1530 // At this point we want to put the upcoming activity's process 1531 // at the top of the LRU list, since we know we will be needing it 1532 // very soon and it would be a waste to let it get killed if it 1533 // happens to be sitting towards the end. 1534 if (next.app != null && next.app.thread != null) { 1535 // No reason to do full oom adj update here; we'll let that 1536 // happen whenever it needs to later. 1537 mService.updateLruProcessLocked(next.app, true, null); 1538 } 1539 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1540 return true; 1541 } 1542 1543 // If the most recent activity was noHistory but was only stopped rather 1544 // than stopped+finished because the device went to sleep, we need to make 1545 // sure to finish it as we're making a new activity topmost. 1546 if (mService.isSleeping() && mLastNoHistoryActivity != null && 1547 !mLastNoHistoryActivity.finishing) { 1548 if (DEBUG_STATES) Slog.d(TAG, "no-history finish of " + mLastNoHistoryActivity + 1549 " on new resume"); 1550 requestFinishActivityLocked(mLastNoHistoryActivity.appToken, Activity.RESULT_CANCELED, 1551 null, "no-history", false); 1552 mLastNoHistoryActivity = null; 1553 } 1554 1555 if (prev != null && prev != next) { 1556 if (!prev.waitingVisible && next != null && !next.nowVisible) { 1557 prev.waitingVisible = true; 1558 mStackSupervisor.mWaitingVisibleActivities.add(prev); 1559 if (DEBUG_SWITCH) Slog.v( 1560 TAG, "Resuming top, waiting visible to hide: " + prev); 1561 } else { 1562 // The next activity is already visible, so hide the previous 1563 // activity's windows right now so we can show the new one ASAP. 1564 // We only do this if the previous is finishing, which should mean 1565 // it is on top of the one being resumed so hiding it quickly 1566 // is good. Otherwise, we want to do the normal route of allowing 1567 // the resumed activity to be shown so we can decide if the 1568 // previous should actually be hidden depending on whether the 1569 // new one is found to be full-screen or not. 1570 if (prev.finishing) { 1571 mWindowManager.setAppVisibility(prev.appToken, false); 1572 if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " 1573 + prev + ", waitingVisible=" 1574 + (prev != null ? prev.waitingVisible : null) 1575 + ", nowVisible=" + next.nowVisible); 1576 } else { 1577 if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " 1578 + prev + ", waitingVisible=" 1579 + (prev != null ? prev.waitingVisible : null) 1580 + ", nowVisible=" + next.nowVisible); 1581 } 1582 } 1583 } 1584 1585 // Launching this app's activity, make sure the app is no longer 1586 // considered stopped. 1587 try { 1588 AppGlobals.getPackageManager().setPackageStoppedState( 1589 next.packageName, false, next.userId); /* TODO: Verify if correct userid */ 1590 } catch (RemoteException e1) { 1591 } catch (IllegalArgumentException e) { 1592 Slog.w(TAG, "Failed trying to unstop package " 1593 + next.packageName + ": " + e); 1594 } 1595 1596 // We are starting up the next activity, so tell the window manager 1597 // that the previous one will be hidden soon. This way it can know 1598 // to ignore it when computing the desired screen orientation. 1599 boolean anim = true; 1600 if (prev != null) { 1601 if (prev.finishing) { 1602 if (DEBUG_TRANSITION) Slog.v(TAG, 1603 "Prepare close transition: prev=" + prev); 1604 if (mNoAnimActivities.contains(prev)) { 1605 anim = false; 1606 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1607 } else { 1608 mWindowManager.prepareAppTransition(prev.task == next.task 1609 ? AppTransition.TRANSIT_ACTIVITY_CLOSE 1610 : AppTransition.TRANSIT_TASK_CLOSE, false); 1611 } 1612 mWindowManager.setAppWillBeHidden(prev.appToken); 1613 mWindowManager.setAppVisibility(prev.appToken, false); 1614 } else { 1615 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: prev=" + prev); 1616 if (mNoAnimActivities.contains(next)) { 1617 anim = false; 1618 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1619 } else { 1620 mWindowManager.prepareAppTransition(prev.task == next.task 1621 ? AppTransition.TRANSIT_ACTIVITY_OPEN 1622 : AppTransition.TRANSIT_TASK_OPEN, false); 1623 } 1624 } 1625 if (false) { 1626 mWindowManager.setAppWillBeHidden(prev.appToken); 1627 mWindowManager.setAppVisibility(prev.appToken, false); 1628 } 1629 } else { 1630 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare open transition: no previous"); 1631 if (mNoAnimActivities.contains(next)) { 1632 anim = false; 1633 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 1634 } else { 1635 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_ACTIVITY_OPEN, false); 1636 } 1637 } 1638 1639 Bundle resumeAnimOptions = null; 1640 if (anim) { 1641 ActivityOptions opts = next.getOptionsForTargetActivityLocked(); 1642 if (opts != null) { 1643 resumeAnimOptions = opts.toBundle(); 1644 } 1645 next.applyOptionsLocked(); 1646 } else { 1647 next.clearOptionsLocked(); 1648 } 1649 1650 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1651 if (next.app != null && next.app.thread != null) { 1652 if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); 1653 1654 // This activity is now becoming visible. 1655 mWindowManager.setAppVisibility(next.appToken, true); 1656 1657 // schedule launch ticks to collect information about slow apps. 1658 next.startLaunchTickingLocked(); 1659 1660 ActivityRecord lastResumedActivity = 1661 lastStack == null ? null :lastStack.mResumedActivity; 1662 ActivityState lastState = next.state; 1663 1664 mService.updateCpuStats(); 1665 1666 if (DEBUG_STATES) Slog.v(TAG, "Moving to RESUMED: " + next + " (in existing)"); 1667 next.state = ActivityState.RESUMED; 1668 mResumedActivity = next; 1669 next.task.touchActiveTime(); 1670 mService.addRecentTaskLocked(next.task); 1671 mService.updateLruProcessLocked(next.app, true, null); 1672 updateLRUListLocked(next); 1673 mService.updateOomAdjLocked(); 1674 1675 // Have the window manager re-evaluate the orientation of 1676 // the screen based on the new activity order. 1677 boolean notUpdated = true; 1678 if (mStackSupervisor.isFrontStack(this)) { 1679 Configuration config = mWindowManager.updateOrientationFromAppTokens( 1680 mService.mConfiguration, 1681 next.mayFreezeScreenLocked(next.app) ? next.appToken : null); 1682 if (config != null) { 1683 next.frozenBeforeDestroy = true; 1684 } 1685 notUpdated = !mService.updateConfigurationLocked(config, next, false, false); 1686 } 1687 1688 if (notUpdated) { 1689 // The configuration update wasn't able to keep the existing 1690 // instance of the activity, and instead started a new one. 1691 // We should be all done, but let's just make sure our activity 1692 // is still at the top and schedule another run if something 1693 // weird happened. 1694 ActivityRecord nextNext = topRunningActivityLocked(null); 1695 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 1696 "Activity config changed during resume: " + next 1697 + ", new next: " + nextNext); 1698 if (nextNext != next) { 1699 // Do over! 1700 mStackSupervisor.scheduleResumeTopActivities(); 1701 } 1702 if (mStackSupervisor.reportResumedActivityLocked(next)) { 1703 mNoAnimActivities.clear(); 1704 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1705 return true; 1706 } 1707 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1708 return false; 1709 } 1710 1711 try { 1712 // Deliver all pending results. 1713 ArrayList<ResultInfo> a = next.results; 1714 if (a != null) { 1715 final int N = a.size(); 1716 if (!next.finishing && N > 0) { 1717 if (DEBUG_RESULTS) Slog.v( 1718 TAG, "Delivering results to " + next 1719 + ": " + a); 1720 next.app.thread.scheduleSendResult(next.appToken, a); 1721 } 1722 } 1723 1724 if (next.newIntents != null) { 1725 next.app.thread.scheduleNewIntent(next.newIntents, next.appToken); 1726 } 1727 1728 EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, 1729 next.userId, System.identityHashCode(next), 1730 next.task.taskId, next.shortComponentName); 1731 1732 next.sleeping = false; 1733 mService.showAskCompatModeDialogLocked(next); 1734 next.app.pendingUiClean = true; 1735 next.app.forceProcessStateUpTo(ActivityManager.PROCESS_STATE_TOP); 1736 next.clearOptionsLocked(); 1737 next.app.thread.scheduleResumeActivity(next.appToken, next.app.repProcState, 1738 mService.isNextTransitionForward(), resumeAnimOptions); 1739 1740 mStackSupervisor.checkReadyForSleepLocked(); 1741 1742 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Resumed " + next); 1743 } catch (Exception e) { 1744 // Whoops, need to restart this activity! 1745 if (DEBUG_STATES) Slog.v(TAG, "Resume failed; resetting state to " 1746 + lastState + ": " + next); 1747 next.state = lastState; 1748 if (lastStack != null) { 1749 lastStack.mResumedActivity = lastResumedActivity; 1750 } 1751 Slog.i(TAG, "Restarting because process died: " + next); 1752 if (!next.hasBeenLaunched) { 1753 next.hasBeenLaunched = true; 1754 } else if (SHOW_APP_STARTING_PREVIEW && lastStack != null && 1755 mStackSupervisor.isFrontStack(lastStack)) { 1756 mWindowManager.setAppStartingWindow( 1757 next.appToken, next.packageName, next.theme, 1758 mService.compatibilityInfoForPackageLocked(next.info.applicationInfo), 1759 next.nonLocalizedLabel, next.labelRes, next.icon, next.logo, 1760 next.windowFlags, null, true); 1761 } 1762 mStackSupervisor.startSpecificActivityLocked(next, true, false); 1763 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1764 return true; 1765 } 1766 1767 // From this point on, if something goes wrong there is no way 1768 // to recover the activity. 1769 try { 1770 next.visible = true; 1771 completeResumeLocked(next); 1772 } catch (Exception e) { 1773 // If any exception gets thrown, toss away this 1774 // activity and try the next one. 1775 Slog.w(TAG, "Exception thrown during resume of " + next, e); 1776 requestFinishActivityLocked(next.appToken, Activity.RESULT_CANCELED, null, 1777 "resume-exception", true); 1778 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1779 return true; 1780 } 1781 next.stopped = false; 1782 1783 } else { 1784 // Whoops, need to restart this activity! 1785 if (!next.hasBeenLaunched) { 1786 next.hasBeenLaunched = true; 1787 } else { 1788 if (SHOW_APP_STARTING_PREVIEW) { 1789 mWindowManager.setAppStartingWindow( 1790 next.appToken, next.packageName, next.theme, 1791 mService.compatibilityInfoForPackageLocked( 1792 next.info.applicationInfo), 1793 next.nonLocalizedLabel, 1794 next.labelRes, next.icon, next.logo, next.windowFlags, 1795 null, true); 1796 } 1797 if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); 1798 } 1799 if (DEBUG_STATES) Slog.d(TAG, "resumeTopActivityLocked: Restarting " + next); 1800 mStackSupervisor.startSpecificActivityLocked(next, true, true); 1801 } 1802 1803 if (DEBUG_STACK) mStackSupervisor.validateTopActivitiesLocked(); 1804 return true; 1805 } 1806 1807 private void insertTaskAtTop(TaskRecord task) { 1808 // If this is being moved to the top by another activity or being launched from the home 1809 // activity, set mOnTopOfHome accordingly. 1810 if (isOnHomeDisplay()) { 1811 ActivityStack lastStack = mStackSupervisor.getLastStack(); 1812 final boolean fromHome = lastStack.isHomeStack(); 1813 if (!isHomeStack() && (fromHome || topTask() != task)) { 1814 task.setTaskToReturnTo(fromHome ? 1815 lastStack.topTask().taskType : APPLICATION_ACTIVITY_TYPE); 1816 } 1817 } else { 1818 task.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 1819 } 1820 1821 mTaskHistory.remove(task); 1822 // Now put task at top. 1823 int stackNdx = mTaskHistory.size(); 1824 if (!isCurrentProfileLocked(task.userId)) { 1825 // Put non-current user tasks below current user tasks. 1826 while (--stackNdx >= 0) { 1827 if (!isCurrentProfileLocked(mTaskHistory.get(stackNdx).userId)) { 1828 break; 1829 } 1830 } 1831 ++stackNdx; 1832 } 1833 mTaskHistory.add(stackNdx, task); 1834 updateTaskMovement(task, true); 1835 } 1836 1837 final void startActivityLocked(ActivityRecord r, boolean newTask, 1838 boolean doResume, boolean keepCurTransition, Bundle options) { 1839 TaskRecord rTask = r.task; 1840 final int taskId = rTask.taskId; 1841 if (taskForIdLocked(taskId) == null || newTask) { 1842 // Last activity in task had been removed or ActivityManagerService is reusing task. 1843 // Insert or replace. 1844 // Might not even be in. 1845 insertTaskAtTop(rTask); 1846 mWindowManager.moveTaskToTop(taskId); 1847 } 1848 TaskRecord task = null; 1849 if (!newTask) { 1850 // If starting in an existing task, find where that is... 1851 boolean startIt = true; 1852 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 1853 task = mTaskHistory.get(taskNdx); 1854 if (task == r.task) { 1855 // Here it is! Now, if this is not yet visible to the 1856 // user, then just add it without starting; it will 1857 // get started when the user navigates back to it. 1858 if (!startIt) { 1859 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to task " 1860 + task, new RuntimeException("here").fillInStackTrace()); 1861 task.addActivityToTop(r); 1862 r.putInHistory(); 1863 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1864 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1865 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, 1866 r.userId, r.info.configChanges, task.voiceSession != null); 1867 if (VALIDATE_TOKENS) { 1868 validateAppTokensLocked(); 1869 } 1870 ActivityOptions.abort(options); 1871 return; 1872 } 1873 break; 1874 } else if (task.numFullscreen > 0) { 1875 startIt = false; 1876 } 1877 } 1878 } 1879 1880 // Place a new activity at top of stack, so it is next to interact 1881 // with the user. 1882 1883 // If we are not placing the new activity frontmost, we do not want 1884 // to deliver the onUserLeaving callback to the actual frontmost 1885 // activity 1886 if (task == r.task && mTaskHistory.indexOf(task) != (mTaskHistory.size() - 1)) { 1887 mStackSupervisor.mUserLeaving = false; 1888 if (DEBUG_USER_LEAVING) Slog.v(TAG, 1889 "startActivity() behind front, mUserLeaving=false"); 1890 } 1891 1892 task = r.task; 1893 1894 // Slot the activity into the history stack and proceed 1895 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Adding activity " + r + " to stack to task " + task, 1896 new RuntimeException("here").fillInStackTrace()); 1897 task.addActivityToTop(r); 1898 task.setFrontOfTask(); 1899 1900 r.putInHistory(); 1901 if (!isHomeStack() || numActivities() > 0) { 1902 // We want to show the starting preview window if we are 1903 // switching to a new task, or the next activity's process is 1904 // not currently running. 1905 boolean showStartingIcon = newTask; 1906 ProcessRecord proc = r.app; 1907 if (proc == null) { 1908 proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); 1909 } 1910 if (proc == null || proc.thread == null) { 1911 showStartingIcon = true; 1912 } 1913 if (DEBUG_TRANSITION) Slog.v(TAG, 1914 "Prepare open transition: starting " + r); 1915 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 1916 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, keepCurTransition); 1917 mNoAnimActivities.add(r); 1918 } else { 1919 mWindowManager.prepareAppTransition(newTask 1920 ? AppTransition.TRANSIT_TASK_OPEN 1921 : AppTransition.TRANSIT_ACTIVITY_OPEN, keepCurTransition); 1922 mNoAnimActivities.remove(r); 1923 } 1924 mWindowManager.addAppToken(task.mActivities.indexOf(r), 1925 r.appToken, r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1926 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1927 r.info.configChanges, task.voiceSession != null); 1928 boolean doShow = true; 1929 if (newTask) { 1930 // Even though this activity is starting fresh, we still need 1931 // to reset it to make sure we apply affinities to move any 1932 // existing activities from other tasks in to it. 1933 // If the caller has requested that the target task be 1934 // reset, then do so. 1935 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { 1936 resetTaskIfNeededLocked(r, r); 1937 doShow = topRunningNonDelayedActivityLocked(null) == r; 1938 } 1939 } else if (options != null && new ActivityOptions(options).getAnimationType() 1940 == ActivityOptions.ANIM_SCENE_TRANSITION) { 1941 doShow = false; 1942 } 1943 if (SHOW_APP_STARTING_PREVIEW && doShow) { 1944 // Figure out if we are transitioning from another activity that is 1945 // "has the same starting icon" as the next one. This allows the 1946 // window manager to keep the previous window it had previously 1947 // created, if it still had one. 1948 ActivityRecord prev = mResumedActivity; 1949 if (prev != null) { 1950 // We don't want to reuse the previous starting preview if: 1951 // (1) The current activity is in a different task. 1952 if (prev.task != r.task) { 1953 prev = null; 1954 } 1955 // (2) The current activity is already displayed. 1956 else if (prev.nowVisible) { 1957 prev = null; 1958 } 1959 } 1960 mWindowManager.setAppStartingWindow( 1961 r.appToken, r.packageName, r.theme, 1962 mService.compatibilityInfoForPackageLocked( 1963 r.info.applicationInfo), r.nonLocalizedLabel, 1964 r.labelRes, r.icon, r.logo, r.windowFlags, 1965 prev != null ? prev.appToken : null, showStartingIcon); 1966 r.mStartingWindowShown = true; 1967 } 1968 } else { 1969 // If this is the first activity, don't do any fancy animations, 1970 // because there is nothing for it to animate on top of. 1971 mWindowManager.addAppToken(task.mActivities.indexOf(r), r.appToken, 1972 r.task.taskId, mStackId, r.info.screenOrientation, r.fullscreen, 1973 (r.info.flags & ActivityInfo.FLAG_SHOW_ON_LOCK_SCREEN) != 0, r.userId, 1974 r.info.configChanges, task.voiceSession != null); 1975 ActivityOptions.abort(options); 1976 options = null; 1977 } 1978 if (VALIDATE_TOKENS) { 1979 validateAppTokensLocked(); 1980 } 1981 1982 if (doResume) { 1983 mStackSupervisor.resumeTopActivitiesLocked(this, r, options); 1984 } 1985 } 1986 1987 final void validateAppTokensLocked() { 1988 mValidateAppTokens.clear(); 1989 mValidateAppTokens.ensureCapacity(numActivities()); 1990 final int numTasks = mTaskHistory.size(); 1991 for (int taskNdx = 0; taskNdx < numTasks; ++taskNdx) { 1992 TaskRecord task = mTaskHistory.get(taskNdx); 1993 final ArrayList<ActivityRecord> activities = task.mActivities; 1994 if (activities.isEmpty()) { 1995 continue; 1996 } 1997 TaskGroup group = new TaskGroup(); 1998 group.taskId = task.taskId; 1999 mValidateAppTokens.add(group); 2000 final int numActivities = activities.size(); 2001 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 2002 final ActivityRecord r = activities.get(activityNdx); 2003 group.tokens.add(r.appToken); 2004 } 2005 } 2006 mWindowManager.validateAppTokens(mStackId, mValidateAppTokens); 2007 } 2008 2009 /** 2010 * Perform a reset of the given task, if needed as part of launching it. 2011 * Returns the new HistoryRecord at the top of the task. 2012 */ 2013 /** 2014 * Helper method for #resetTaskIfNeededLocked. 2015 * We are inside of the task being reset... we'll either finish this activity, push it out 2016 * for another task, or leave it as-is. 2017 * @param task The task containing the Activity (taskTop) that might be reset. 2018 * @param forceReset 2019 * @return An ActivityOptions that needs to be processed. 2020 */ 2021 final ActivityOptions resetTargetTaskIfNeededLocked(TaskRecord task, boolean forceReset) { 2022 ActivityOptions topOptions = null; 2023 2024 int replyChainEnd = -1; 2025 boolean canMoveOptions = true; 2026 2027 // We only do this for activities that are not the root of the task (since if we finish 2028 // the root, we may no longer have the task!). 2029 final ArrayList<ActivityRecord> activities = task.mActivities; 2030 final int numActivities = activities.size(); 2031 final int rootActivityNdx = task.findEffectiveRootIndex(); 2032 for (int i = numActivities - 1; i > rootActivityNdx; --i ) { 2033 ActivityRecord target = activities.get(i); 2034 2035 final int flags = target.info.flags; 2036 final boolean finishOnTaskLaunch = 2037 (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2038 final boolean allowTaskReparenting = 2039 (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2040 final boolean clearWhenTaskReset = 2041 (target.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; 2042 2043 if (!finishOnTaskLaunch 2044 && !clearWhenTaskReset 2045 && target.resultTo != null) { 2046 // If this activity is sending a reply to a previous 2047 // activity, we can't do anything with it now until 2048 // we reach the start of the reply chain. 2049 // XXX note that we are assuming the result is always 2050 // to the previous activity, which is almost always 2051 // the case but we really shouldn't count on. 2052 if (replyChainEnd < 0) { 2053 replyChainEnd = i; 2054 } 2055 } else if (!finishOnTaskLaunch 2056 && !clearWhenTaskReset 2057 && allowTaskReparenting 2058 && target.taskAffinity != null 2059 && !target.taskAffinity.equals(task.affinity)) { 2060 // If this activity has an affinity for another 2061 // task, then we need to move it out of here. We will 2062 // move it as far out of the way as possible, to the 2063 // bottom of the activity stack. This also keeps it 2064 // correctly ordered with any activities we previously 2065 // moved. 2066 final ThumbnailHolder newThumbHolder; 2067 final TaskRecord targetTask; 2068 final ActivityRecord bottom = 2069 !mTaskHistory.isEmpty() && !mTaskHistory.get(0).mActivities.isEmpty() ? 2070 mTaskHistory.get(0).mActivities.get(0) : null; 2071 if (bottom != null && target.taskAffinity != null 2072 && target.taskAffinity.equals(bottom.task.affinity)) { 2073 // If the activity currently at the bottom has the 2074 // same task affinity as the one we are moving, 2075 // then merge it into the same task. 2076 targetTask = bottom.task; 2077 newThumbHolder = bottom.thumbHolder == null ? targetTask : bottom.thumbHolder; 2078 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2079 + " out to bottom task " + bottom.task); 2080 } else { 2081 targetTask = createTaskRecord(mStackSupervisor.getNextTaskId(), target.info, 2082 null, null, null, false); 2083 newThumbHolder = targetTask; 2084 targetTask.affinityIntent = target.intent; 2085 if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target 2086 + " out to new task " + target.task); 2087 } 2088 2089 target.thumbHolder = newThumbHolder; 2090 2091 final int targetTaskId = targetTask.taskId; 2092 mWindowManager.setAppGroupId(target.appToken, targetTaskId); 2093 2094 boolean noOptions = canMoveOptions; 2095 final int start = replyChainEnd < 0 ? i : replyChainEnd; 2096 for (int srcPos = start; srcPos >= i; --srcPos) { 2097 final ActivityRecord p = activities.get(srcPos); 2098 if (p.finishing) { 2099 continue; 2100 } 2101 2102 ThumbnailHolder curThumbHolder = p.thumbHolder; 2103 canMoveOptions = false; 2104 if (noOptions && topOptions == null) { 2105 topOptions = p.takeOptionsLocked(); 2106 if (topOptions != null) { 2107 noOptions = false; 2108 } 2109 } 2110 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing activity " + p + " from task=" 2111 + task + " adding to task=" + targetTask 2112 + " Callers=" + Debug.getCallers(4)); 2113 if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p 2114 + " out to target's task " + target.task); 2115 p.setTask(targetTask, curThumbHolder, false); 2116 targetTask.addActivityAtBottom(p); 2117 2118 mWindowManager.setAppGroupId(p.appToken, targetTaskId); 2119 } 2120 2121 mWindowManager.moveTaskToBottom(targetTaskId); 2122 if (VALIDATE_TOKENS) { 2123 validateAppTokensLocked(); 2124 } 2125 2126 replyChainEnd = -1; 2127 } else if (forceReset || finishOnTaskLaunch || clearWhenTaskReset) { 2128 // If the activity should just be removed -- either 2129 // because it asks for it, or the task should be 2130 // cleared -- then finish it and anything that is 2131 // part of its reply chain. 2132 int end; 2133 if (clearWhenTaskReset) { 2134 // In this case, we want to finish this activity 2135 // and everything above it, so be sneaky and pretend 2136 // like these are all in the reply chain. 2137 end = numActivities - 1; 2138 } else if (replyChainEnd < 0) { 2139 end = i; 2140 } else { 2141 end = replyChainEnd; 2142 } 2143 boolean noOptions = canMoveOptions; 2144 for (int srcPos = i; srcPos <= end; srcPos++) { 2145 ActivityRecord p = activities.get(srcPos); 2146 if (p.finishing) { 2147 continue; 2148 } 2149 canMoveOptions = false; 2150 if (noOptions && topOptions == null) { 2151 topOptions = p.takeOptionsLocked(); 2152 if (topOptions != null) { 2153 noOptions = false; 2154 } 2155 } 2156 if (DEBUG_TASKS) Slog.w(TAG, 2157 "resetTaskIntendedTask: calling finishActivity on " + p); 2158 if (finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false)) { 2159 end--; 2160 srcPos--; 2161 } 2162 } 2163 replyChainEnd = -1; 2164 } else { 2165 // If we were in the middle of a chain, well the 2166 // activity that started it all doesn't want anything 2167 // special, so leave it all as-is. 2168 replyChainEnd = -1; 2169 } 2170 } 2171 2172 return topOptions; 2173 } 2174 2175 /** 2176 * Helper method for #resetTaskIfNeededLocked. Processes all of the activities in a given 2177 * TaskRecord looking for an affinity with the task of resetTaskIfNeededLocked.taskTop. 2178 * @param affinityTask The task we are looking for an affinity to. 2179 * @param task Task that resetTaskIfNeededLocked.taskTop belongs to. 2180 * @param topTaskIsHigher True if #task has already been processed by resetTaskIfNeededLocked. 2181 * @param forceReset Flag passed in to resetTaskIfNeededLocked. 2182 */ 2183 private int resetAffinityTaskIfNeededLocked(TaskRecord affinityTask, TaskRecord task, 2184 boolean topTaskIsHigher, boolean forceReset, int taskInsertionPoint) { 2185 int replyChainEnd = -1; 2186 final int taskId = task.taskId; 2187 final String taskAffinity = task.affinity; 2188 2189 final ArrayList<ActivityRecord> activities = affinityTask.mActivities; 2190 final int numActivities = activities.size(); 2191 final int rootActivityNdx = affinityTask.findEffectiveRootIndex(); 2192 2193 // Do not operate on or below the effective root Activity. 2194 for (int i = numActivities - 1; i > rootActivityNdx; --i) { 2195 ActivityRecord target = activities.get(i); 2196 2197 final int flags = target.info.flags; 2198 boolean finishOnTaskLaunch = (flags & ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; 2199 boolean allowTaskReparenting = (flags & ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; 2200 2201 if (target.resultTo != null) { 2202 // If this activity is sending a reply to a previous 2203 // activity, we can't do anything with it now until 2204 // we reach the start of the reply chain. 2205 // XXX note that we are assuming the result is always 2206 // to the previous activity, which is almost always 2207 // the case but we really shouldn't count on. 2208 if (replyChainEnd < 0) { 2209 replyChainEnd = i; 2210 } 2211 } else if (topTaskIsHigher 2212 && allowTaskReparenting 2213 && taskAffinity != null 2214 && taskAffinity.equals(target.taskAffinity)) { 2215 // This activity has an affinity for our task. Either remove it if we are 2216 // clearing or move it over to our task. Note that 2217 // we currently punt on the case where we are resetting a 2218 // task that is not at the top but who has activities above 2219 // with an affinity to it... this is really not a normal 2220 // case, and we will need to later pull that task to the front 2221 // and usually at that point we will do the reset and pick 2222 // up those remaining activities. (This only happens if 2223 // someone starts an activity in a new task from an activity 2224 // in a task that is not currently on top.) 2225 if (forceReset || finishOnTaskLaunch) { 2226 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2227 if (DEBUG_TASKS) Slog.v(TAG, "Finishing task at index " + start + " to " + i); 2228 for (int srcPos = start; srcPos >= i; --srcPos) { 2229 final ActivityRecord p = activities.get(srcPos); 2230 if (p.finishing) { 2231 continue; 2232 } 2233 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "reset", false); 2234 } 2235 } else { 2236 if (taskInsertionPoint < 0) { 2237 taskInsertionPoint = task.mActivities.size(); 2238 2239 } 2240 2241 final int start = replyChainEnd >= 0 ? replyChainEnd : i; 2242 if (DEBUG_TASKS) Slog.v(TAG, "Reparenting from task=" + affinityTask + ":" 2243 + start + "-" + i + " to task=" + task + ":" + taskInsertionPoint); 2244 for (int srcPos = start; srcPos >= i; --srcPos) { 2245 final ActivityRecord p = activities.get(srcPos); 2246 p.setTask(task, null, false); 2247 task.addActivityAtIndex(taskInsertionPoint, p); 2248 2249 if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + p 2250 + " to stack at " + task, 2251 new RuntimeException("here").fillInStackTrace()); 2252 if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p + " from " + srcPos 2253 + " in to resetting task " + task); 2254 mWindowManager.setAppGroupId(p.appToken, taskId); 2255 } 2256 mWindowManager.moveTaskToTop(taskId); 2257 if (VALIDATE_TOKENS) { 2258 validateAppTokensLocked(); 2259 } 2260 2261 // Now we've moved it in to place... but what if this is 2262 // a singleTop activity and we have put it on top of another 2263 // instance of the same activity? Then we drop the instance 2264 // below so it remains singleTop. 2265 if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { 2266 ArrayList<ActivityRecord> taskActivities = task.mActivities; 2267 int targetNdx = taskActivities.indexOf(target); 2268 if (targetNdx > 0) { 2269 ActivityRecord p = taskActivities.get(targetNdx - 1); 2270 if (p.intent.getComponent().equals(target.intent.getComponent())) { 2271 finishActivityLocked(p, Activity.RESULT_CANCELED, null, "replace", 2272 false); 2273 } 2274 } 2275 } 2276 } 2277 2278 replyChainEnd = -1; 2279 } 2280 } 2281 return taskInsertionPoint; 2282 } 2283 2284 final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, 2285 ActivityRecord newActivity) { 2286 boolean forceReset = 2287 (newActivity.info.flags & ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; 2288 if (ACTIVITY_INACTIVE_RESET_TIME > 0 2289 && taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { 2290 if ((newActivity.info.flags & ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { 2291 forceReset = true; 2292 } 2293 } 2294 2295 final TaskRecord task = taskTop.task; 2296 2297 /** False until we evaluate the TaskRecord associated with taskTop. Switches to true 2298 * for remaining tasks. Used for later tasks to reparent to task. */ 2299 boolean taskFound = false; 2300 2301 /** If ActivityOptions are moved out and need to be aborted or moved to taskTop. */ 2302 ActivityOptions topOptions = null; 2303 2304 // Preserve the location for reparenting in the new task. 2305 int reparentInsertionPoint = -1; 2306 2307 for (int i = mTaskHistory.size() - 1; i >= 0; --i) { 2308 final TaskRecord targetTask = mTaskHistory.get(i); 2309 2310 if (targetTask == task) { 2311 topOptions = resetTargetTaskIfNeededLocked(task, forceReset); 2312 taskFound = true; 2313 } else { 2314 reparentInsertionPoint = resetAffinityTaskIfNeededLocked(targetTask, task, 2315 taskFound, forceReset, reparentInsertionPoint); 2316 } 2317 } 2318 2319 int taskNdx = mTaskHistory.indexOf(task); 2320 do { 2321 taskTop = mTaskHistory.get(taskNdx--).getTopActivity(); 2322 } while (taskTop == null && taskNdx >= 0); 2323 2324 if (topOptions != null) { 2325 // If we got some ActivityOptions from an activity on top that 2326 // was removed from the task, propagate them to the new real top. 2327 if (taskTop != null) { 2328 taskTop.updateOptionsLocked(topOptions); 2329 } else { 2330 topOptions.abort(); 2331 } 2332 } 2333 2334 return taskTop; 2335 } 2336 2337 void sendActivityResultLocked(int callingUid, ActivityRecord r, 2338 String resultWho, int requestCode, int resultCode, Intent data) { 2339 2340 if (callingUid > 0) { 2341 mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, 2342 data, r.getUriPermissionsLocked(), r.userId); 2343 } 2344 2345 if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r 2346 + " : who=" + resultWho + " req=" + requestCode 2347 + " res=" + resultCode + " data=" + data); 2348 if (mResumedActivity == r && r.app != null && r.app.thread != null) { 2349 try { 2350 ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); 2351 list.add(new ResultInfo(resultWho, requestCode, 2352 resultCode, data)); 2353 r.app.thread.scheduleSendResult(r.appToken, list); 2354 return; 2355 } catch (Exception e) { 2356 Slog.w(TAG, "Exception thrown sending result to " + r, e); 2357 } 2358 } 2359 2360 r.addResultLocked(null, resultWho, requestCode, resultCode, data); 2361 } 2362 2363 private void adjustFocusedActivityLocked(ActivityRecord r) { 2364 if (mStackSupervisor.isFrontStack(this) && mService.mFocusedActivity == r) { 2365 ActivityRecord next = topRunningActivityLocked(null); 2366 if (next != r) { 2367 final TaskRecord task = r.task; 2368 if (r.frontOfTask && task == topTask() && task.isOverHomeStack()) { 2369 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 2370 } 2371 } 2372 ActivityRecord top = mStackSupervisor.topRunningActivityLocked(); 2373 if (top != null) { 2374 mService.setFocusedActivityLocked(top); 2375 } 2376 } 2377 } 2378 2379 final void stopActivityLocked(ActivityRecord r) { 2380 if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); 2381 if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 2382 || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { 2383 if (!r.finishing) { 2384 if (!mService.isSleeping()) { 2385 if (DEBUG_STATES) { 2386 Slog.d(TAG, "no-history finish of " + r); 2387 } 2388 requestFinishActivityLocked(r.appToken, Activity.RESULT_CANCELED, null, 2389 "no-history", false); 2390 } else { 2391 if (DEBUG_STATES) Slog.d(TAG, "Not finishing noHistory " + r 2392 + " on stop because we're just sleeping"); 2393 } 2394 } 2395 } 2396 2397 if (r.app != null && r.app.thread != null) { 2398 adjustFocusedActivityLocked(r); 2399 r.resumeKeyDispatchingLocked(); 2400 try { 2401 r.stopped = false; 2402 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2403 + " (stop requested)"); 2404 r.state = ActivityState.STOPPING; 2405 if (DEBUG_VISBILITY) Slog.v( 2406 TAG, "Stopping visible=" + r.visible + " for " + r); 2407 if (!r.visible) { 2408 mWindowManager.setAppVisibility(r.appToken, false); 2409 } 2410 r.app.thread.scheduleStopActivity(r.appToken, r.visible, r.configChangeFlags); 2411 if (mService.isSleepingOrShuttingDown()) { 2412 r.setSleeping(true); 2413 } 2414 Message msg = mHandler.obtainMessage(STOP_TIMEOUT_MSG, r); 2415 mHandler.sendMessageDelayed(msg, STOP_TIMEOUT); 2416 } catch (Exception e) { 2417 // Maybe just ignore exceptions here... if the process 2418 // has crashed, our death notification will clean things 2419 // up. 2420 Slog.w(TAG, "Exception thrown during pause", e); 2421 // Just in case, assume it to be stopped. 2422 r.stopped = true; 2423 if (DEBUG_STATES) Slog.v(TAG, "Stop failed; moving to STOPPED: " + r); 2424 r.state = ActivityState.STOPPED; 2425 if (r.configDestroy) { 2426 destroyActivityLocked(r, true, false, "stop-except"); 2427 } 2428 } 2429 } 2430 } 2431 2432 /** 2433 * @return Returns true if the activity is being finished, false if for 2434 * some reason it is being left as-is. 2435 */ 2436 final boolean requestFinishActivityLocked(IBinder token, int resultCode, 2437 Intent resultData, String reason, boolean oomAdj) { 2438 ActivityRecord r = isInStackLocked(token); 2439 if (DEBUG_RESULTS || DEBUG_STATES) Slog.v( 2440 TAG, "Finishing activity token=" + token + " r=" 2441 + ", result=" + resultCode + ", data=" + resultData 2442 + ", reason=" + reason); 2443 if (r == null) { 2444 return false; 2445 } 2446 2447 finishActivityLocked(r, resultCode, resultData, reason, oomAdj); 2448 return true; 2449 } 2450 2451 final void finishSubActivityLocked(ActivityRecord self, String resultWho, int requestCode) { 2452 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2453 ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2454 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2455 ActivityRecord r = activities.get(activityNdx); 2456 if (r.resultTo == self && r.requestCode == requestCode) { 2457 if ((r.resultWho == null && resultWho == null) || 2458 (r.resultWho != null && r.resultWho.equals(resultWho))) { 2459 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "request-sub", 2460 false); 2461 } 2462 } 2463 } 2464 } 2465 mService.updateOomAdjLocked(); 2466 } 2467 2468 final void finishTopRunningActivityLocked(ProcessRecord app) { 2469 ActivityRecord r = topRunningActivityLocked(null); 2470 if (r != null && r.app == app) { 2471 // If the top running activity is from this crashing 2472 // process, then terminate it to avoid getting in a loop. 2473 Slog.w(TAG, " Force finishing activity " 2474 + r.intent.getComponent().flattenToShortString()); 2475 int taskNdx = mTaskHistory.indexOf(r.task); 2476 int activityNdx = r.task.mActivities.indexOf(r); 2477 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2478 // Also terminate any activities below it that aren't yet 2479 // stopped, to avoid a situation where one will get 2480 // re-start our crashing activity once it gets resumed again. 2481 --activityNdx; 2482 if (activityNdx < 0) { 2483 do { 2484 --taskNdx; 2485 if (taskNdx < 0) { 2486 break; 2487 } 2488 activityNdx = mTaskHistory.get(taskNdx).mActivities.size() - 1; 2489 } while (activityNdx < 0); 2490 } 2491 if (activityNdx >= 0) { 2492 r = mTaskHistory.get(taskNdx).mActivities.get(activityNdx); 2493 if (r.state == ActivityState.RESUMED 2494 || r.state == ActivityState.PAUSING 2495 || r.state == ActivityState.PAUSED) { 2496 if (!r.isHomeActivity() || mService.mHomeProcess != r.app) { 2497 Slog.w(TAG, " Force finishing activity " 2498 + r.intent.getComponent().flattenToShortString()); 2499 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 2500 } 2501 } 2502 } 2503 } 2504 } 2505 2506 final boolean finishActivityAffinityLocked(ActivityRecord r) { 2507 ArrayList<ActivityRecord> activities = r.task.mActivities; 2508 for (int index = activities.indexOf(r); index >= 0; --index) { 2509 ActivityRecord cur = activities.get(index); 2510 if (!Objects.equals(cur.taskAffinity, r.taskAffinity)) { 2511 break; 2512 } 2513 finishActivityLocked(cur, Activity.RESULT_CANCELED, null, "request-affinity", true); 2514 } 2515 return true; 2516 } 2517 2518 final void finishActivityResultsLocked(ActivityRecord r, int resultCode, Intent resultData) { 2519 // send the result 2520 ActivityRecord resultTo = r.resultTo; 2521 if (resultTo != null) { 2522 if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo 2523 + " who=" + r.resultWho + " req=" + r.requestCode 2524 + " res=" + resultCode + " data=" + resultData); 2525 if (resultTo.userId != r.userId) { 2526 if (resultData != null) { 2527 resultData.prepareToLeaveUser(r.userId); 2528 } 2529 } 2530 if (r.info.applicationInfo.uid > 0) { 2531 mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, 2532 resultTo.packageName, resultData, 2533 resultTo.getUriPermissionsLocked(), resultTo.userId); 2534 } 2535 resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, 2536 resultData); 2537 r.resultTo = null; 2538 } 2539 else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); 2540 2541 // Make sure this HistoryRecord is not holding on to other resources, 2542 // because clients have remote IPC references to this object so we 2543 // can't assume that will go away and want to avoid circular IPC refs. 2544 r.results = null; 2545 r.pendingResults = null; 2546 r.newIntents = null; 2547 r.icicle = null; 2548 } 2549 2550 /** 2551 * @return Returns true if this activity has been removed from the history 2552 * list, or false if it is still in the list and will be removed later. 2553 */ 2554 final boolean finishActivityLocked(ActivityRecord r, int resultCode, Intent resultData, 2555 String reason, boolean oomAdj) { 2556 if (r.finishing) { 2557 Slog.w(TAG, "Duplicate finish request for " + r); 2558 return false; 2559 } 2560 2561 r.makeFinishing(); 2562 final TaskRecord task = r.task; 2563 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 2564 r.userId, System.identityHashCode(r), 2565 task.taskId, r.shortComponentName, reason); 2566 final ArrayList<ActivityRecord> activities = task.mActivities; 2567 final int index = activities.indexOf(r); 2568 if (index < (activities.size() - 1)) { 2569 task.setFrontOfTask(); 2570 if ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { 2571 // If the caller asked that this activity (and all above it) 2572 // be cleared when the task is reset, don't lose that information, 2573 // but propagate it up to the next activity. 2574 ActivityRecord next = activities.get(index+1); 2575 next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 2576 } 2577 } 2578 2579 r.pauseKeyDispatchingLocked(); 2580 2581 adjustFocusedActivityLocked(r); 2582 2583 finishActivityResultsLocked(r, resultCode, resultData); 2584 2585 if (mResumedActivity == r) { 2586 boolean endTask = index <= 0; 2587 if (DEBUG_VISBILITY || DEBUG_TRANSITION) Slog.v(TAG, 2588 "Prepare close transition: finishing " + r); 2589 mWindowManager.prepareAppTransition(endTask 2590 ? AppTransition.TRANSIT_TASK_CLOSE 2591 : AppTransition.TRANSIT_ACTIVITY_CLOSE, false); 2592 2593 // Tell window manager to prepare for this one to be removed. 2594 mWindowManager.setAppVisibility(r.appToken, false); 2595 2596 if (mPausingActivity == null) { 2597 if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); 2598 if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); 2599 startPausingLocked(false, false); 2600 } 2601 2602 if (endTask) { 2603 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 2604 } 2605 } else if (r.state != ActivityState.PAUSING) { 2606 // If the activity is PAUSING, we will complete the finish once 2607 // it is done pausing; else we can just directly finish it here. 2608 if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); 2609 return finishCurrentActivityLocked(r, FINISH_AFTER_PAUSE, oomAdj) == null; 2610 } else { 2611 if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); 2612 } 2613 2614 return false; 2615 } 2616 2617 static final int FINISH_IMMEDIATELY = 0; 2618 static final int FINISH_AFTER_PAUSE = 1; 2619 static final int FINISH_AFTER_VISIBLE = 2; 2620 2621 final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, int mode, boolean oomAdj) { 2622 // First things first: if this activity is currently visible, 2623 // and the resumed activity is not yet visible, then hold off on 2624 // finishing until the resumed one becomes visible. 2625 if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { 2626 if (!mStackSupervisor.mStoppingActivities.contains(r)) { 2627 mStackSupervisor.mStoppingActivities.add(r); 2628 if (mStackSupervisor.mStoppingActivities.size() > 3 2629 || r.frontOfTask && mTaskHistory.size() <= 1) { 2630 // If we already have a few activities waiting to stop, 2631 // then give up on things going idle and start clearing 2632 // them out. Or if r is the last of activity of the last task the stack 2633 // will be empty and must be cleared immediately. 2634 mStackSupervisor.scheduleIdleLocked(); 2635 } else { 2636 mStackSupervisor.checkReadyForSleepLocked(); 2637 } 2638 } 2639 if (DEBUG_STATES) Slog.v(TAG, "Moving to STOPPING: " + r 2640 + " (finish requested)"); 2641 r.state = ActivityState.STOPPING; 2642 if (oomAdj) { 2643 mService.updateOomAdjLocked(); 2644 } 2645 return r; 2646 } 2647 2648 // make sure the record is cleaned out of other places. 2649 mStackSupervisor.mStoppingActivities.remove(r); 2650 mStackSupervisor.mGoingToSleepActivities.remove(r); 2651 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2652 if (mResumedActivity == r) { 2653 mResumedActivity = null; 2654 } 2655 final ActivityState prevState = r.state; 2656 if (DEBUG_STATES) Slog.v(TAG, "Moving to FINISHING: " + r); 2657 r.state = ActivityState.FINISHING; 2658 2659 if (mode == FINISH_IMMEDIATELY 2660 || prevState == ActivityState.STOPPED 2661 || prevState == ActivityState.INITIALIZING) { 2662 // If this activity is already stopped, we can just finish 2663 // it right now. 2664 r.makeFinishing(); 2665 boolean activityRemoved = destroyActivityLocked(r, true, oomAdj, "finish-imm"); 2666 if (activityRemoved) { 2667 mStackSupervisor.resumeTopActivitiesLocked(); 2668 } 2669 if (DEBUG_CONTAINERS) Slog.d(TAG, 2670 "destroyActivityLocked: finishCurrentActivityLocked r=" + r + 2671 " destroy returned removed=" + activityRemoved); 2672 return activityRemoved ? null : r; 2673 } 2674 2675 // Need to go through the full pause cycle to get this 2676 // activity into the stopped state and then finish it. 2677 if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); 2678 mStackSupervisor.mFinishingActivities.add(r); 2679 r.resumeKeyDispatchingLocked(); 2680 mStackSupervisor.getFocusedStack().resumeTopActivityLocked(null); 2681 return r; 2682 } 2683 2684 void finishAllActivitiesLocked() { 2685 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2686 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2687 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2688 final ActivityRecord r = activities.get(activityNdx); 2689 if (r.finishing) { 2690 continue; 2691 } 2692 Slog.d(TAG, "finishAllActivitiesLocked: finishing " + r); 2693 finishCurrentActivityLocked(r, FINISH_IMMEDIATELY, false); 2694 } 2695 } 2696 } 2697 2698 final boolean navigateUpToLocked(IBinder token, Intent destIntent, int resultCode, 2699 Intent resultData) { 2700 final ActivityRecord srec = ActivityRecord.forToken(token); 2701 final TaskRecord task = srec.task; 2702 final ArrayList<ActivityRecord> activities = task.mActivities; 2703 final int start = activities.indexOf(srec); 2704 if (!mTaskHistory.contains(task) || (start < 0)) { 2705 return false; 2706 } 2707 int finishTo = start - 1; 2708 ActivityRecord parent = finishTo < 0 ? null : activities.get(finishTo); 2709 boolean foundParentInTask = false; 2710 final ComponentName dest = destIntent.getComponent(); 2711 if (start > 0 && dest != null) { 2712 for (int i = finishTo; i >= 0; i--) { 2713 ActivityRecord r = activities.get(i); 2714 if (r.info.packageName.equals(dest.getPackageName()) && 2715 r.info.name.equals(dest.getClassName())) { 2716 finishTo = i; 2717 parent = r; 2718 foundParentInTask = true; 2719 break; 2720 } 2721 } 2722 } 2723 2724 IActivityController controller = mService.mController; 2725 if (controller != null) { 2726 ActivityRecord next = topRunningActivityLocked(srec.appToken, 0); 2727 if (next != null) { 2728 // ask watcher if this is allowed 2729 boolean resumeOK = true; 2730 try { 2731 resumeOK = controller.activityResuming(next.packageName); 2732 } catch (RemoteException e) { 2733 mService.mController = null; 2734 Watchdog.getInstance().setActivityController(null); 2735 } 2736 2737 if (!resumeOK) { 2738 return false; 2739 } 2740 } 2741 } 2742 final long origId = Binder.clearCallingIdentity(); 2743 for (int i = start; i > finishTo; i--) { 2744 ActivityRecord r = activities.get(i); 2745 requestFinishActivityLocked(r.appToken, resultCode, resultData, "navigate-up", true); 2746 // Only return the supplied result for the first activity finished 2747 resultCode = Activity.RESULT_CANCELED; 2748 resultData = null; 2749 } 2750 2751 if (parent != null && foundParentInTask) { 2752 final int parentLaunchMode = parent.info.launchMode; 2753 final int destIntentFlags = destIntent.getFlags(); 2754 if (parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE || 2755 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TASK || 2756 parentLaunchMode == ActivityInfo.LAUNCH_SINGLE_TOP || 2757 (destIntentFlags & Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { 2758 parent.deliverNewIntentLocked(srec.info.applicationInfo.uid, destIntent); 2759 } else { 2760 try { 2761 ActivityInfo aInfo = AppGlobals.getPackageManager().getActivityInfo( 2762 destIntent.getComponent(), 0, srec.userId); 2763 int res = mStackSupervisor.startActivityLocked(srec.app.thread, destIntent, 2764 null, aInfo, null, null, parent.appToken, null, 2765 0, -1, parent.launchedFromUid, parent.launchedFromPackage, 2766 0, null, true, null, null); 2767 foundParentInTask = res == ActivityManager.START_SUCCESS; 2768 } catch (RemoteException e) { 2769 foundParentInTask = false; 2770 } 2771 requestFinishActivityLocked(parent.appToken, resultCode, 2772 resultData, "navigate-up", true); 2773 } 2774 } 2775 Binder.restoreCallingIdentity(origId); 2776 return foundParentInTask; 2777 } 2778 /** 2779 * Perform the common clean-up of an activity record. This is called both 2780 * as part of destroyActivityLocked() (when destroying the client-side 2781 * representation) and cleaning things up as a result of its hosting 2782 * processing going away, in which case there is no remaining client-side 2783 * state to destroy so only the cleanup here is needed. 2784 */ 2785 final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices, 2786 boolean setState) { 2787 if (mResumedActivity == r) { 2788 mResumedActivity = null; 2789 } 2790 if (mPausingActivity == r) { 2791 mPausingActivity = null; 2792 } 2793 mService.clearFocusedActivity(r); 2794 2795 r.configDestroy = false; 2796 r.frozenBeforeDestroy = false; 2797 2798 if (setState) { 2799 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (cleaning up)"); 2800 r.state = ActivityState.DESTROYED; 2801 if (DEBUG_APP) Slog.v(TAG, "Clearing app during cleanUp for activity " + r); 2802 r.app = null; 2803 } 2804 2805 // Make sure this record is no longer in the pending finishes list. 2806 // This could happen, for example, if we are trimming activities 2807 // down to the max limit while they are still waiting to finish. 2808 mStackSupervisor.mFinishingActivities.remove(r); 2809 mStackSupervisor.mWaitingVisibleActivities.remove(r); 2810 2811 // Remove any pending results. 2812 if (r.finishing && r.pendingResults != null) { 2813 for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { 2814 PendingIntentRecord rec = apr.get(); 2815 if (rec != null) { 2816 mService.cancelIntentSenderLocked(rec, false); 2817 } 2818 } 2819 r.pendingResults = null; 2820 } 2821 2822 if (cleanServices) { 2823 cleanUpActivityServicesLocked(r); 2824 } 2825 2826 // Get rid of any pending idle timeouts. 2827 removeTimeoutsForActivityLocked(r); 2828 } 2829 2830 private void removeTimeoutsForActivityLocked(ActivityRecord r) { 2831 mStackSupervisor.removeTimeoutsForActivityLocked(r); 2832 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 2833 mHandler.removeMessages(STOP_TIMEOUT_MSG, r); 2834 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 2835 r.finishLaunchTickingLocked(); 2836 } 2837 2838 private void removeActivityFromHistoryLocked(ActivityRecord r) { 2839 mStackSupervisor.removeChildActivityContainers(r); 2840 finishActivityResultsLocked(r, Activity.RESULT_CANCELED, null); 2841 r.makeFinishing(); 2842 if (DEBUG_ADD_REMOVE) { 2843 RuntimeException here = new RuntimeException("here"); 2844 here.fillInStackTrace(); 2845 Slog.i(TAG, "Removing activity " + r + " from stack"); 2846 } 2847 r.takeFromHistory(); 2848 removeTimeoutsForActivityLocked(r); 2849 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (removed from history)"); 2850 r.state = ActivityState.DESTROYED; 2851 if (DEBUG_APP) Slog.v(TAG, "Clearing app during remove for activity " + r); 2852 r.app = null; 2853 mWindowManager.removeAppToken(r.appToken); 2854 if (VALIDATE_TOKENS) { 2855 validateAppTokensLocked(); 2856 } 2857 final TaskRecord task = r.task; 2858 if (task != null && task.removeActivity(r)) { 2859 if (DEBUG_STACK) Slog.i(TAG, 2860 "removeActivityFromHistoryLocked: last activity removed from " + this); 2861 if (mStackSupervisor.isFrontStack(this) && task == topTask() && 2862 task.isOverHomeStack()) { 2863 mStackSupervisor.moveHomeStackTaskToTop(task.getTaskToReturnTo()); 2864 } 2865 removeTask(task); 2866 } 2867 cleanUpActivityServicesLocked(r); 2868 r.removeUriPermissionsLocked(); 2869 } 2870 2871 /** 2872 * Perform clean-up of service connections in an activity record. 2873 */ 2874 final void cleanUpActivityServicesLocked(ActivityRecord r) { 2875 // Throw away any services that have been bound by this activity. 2876 if (r.connections != null) { 2877 Iterator<ConnectionRecord> it = r.connections.iterator(); 2878 while (it.hasNext()) { 2879 ConnectionRecord c = it.next(); 2880 mService.mServices.removeConnectionLocked(c, null, r); 2881 } 2882 r.connections = null; 2883 } 2884 } 2885 2886 final void scheduleDestroyActivities(ProcessRecord owner, boolean oomAdj, String reason) { 2887 Message msg = mHandler.obtainMessage(DESTROY_ACTIVITIES_MSG); 2888 msg.obj = new ScheduleDestroyArgs(owner, oomAdj, reason); 2889 mHandler.sendMessage(msg); 2890 } 2891 2892 final void destroyActivitiesLocked(ProcessRecord owner, boolean oomAdj, String reason) { 2893 boolean lastIsOpaque = false; 2894 boolean activityRemoved = false; 2895 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 2896 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 2897 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 2898 final ActivityRecord r = activities.get(activityNdx); 2899 if (r.finishing) { 2900 continue; 2901 } 2902 if (r.fullscreen) { 2903 lastIsOpaque = true; 2904 } 2905 if (owner != null && r.app != owner) { 2906 continue; 2907 } 2908 if (!lastIsOpaque) { 2909 continue; 2910 } 2911 // We can destroy this one if we have its icicle saved and 2912 // it is not in the process of pausing/stopping/finishing. 2913 if (r.app != null && r != mResumedActivity && r != mPausingActivity 2914 && r.haveState && !r.visible && r.stopped 2915 && r.state != ActivityState.DESTROYING 2916 && r.state != ActivityState.DESTROYED) { 2917 if (DEBUG_SWITCH) Slog.v(TAG, "Destroying " + r + " in state " + r.state 2918 + " resumed=" + mResumedActivity 2919 + " pausing=" + mPausingActivity); 2920 if (destroyActivityLocked(r, true, oomAdj, reason)) { 2921 activityRemoved = true; 2922 } 2923 } 2924 } 2925 } 2926 if (activityRemoved) { 2927 mStackSupervisor.resumeTopActivitiesLocked(); 2928 } 2929 } 2930 2931 /** 2932 * Destroy the current CLIENT SIDE instance of an activity. This may be 2933 * called both when actually finishing an activity, or when performing 2934 * a configuration switch where we destroy the current client-side object 2935 * but then create a new client-side object for this same HistoryRecord. 2936 */ 2937 final boolean destroyActivityLocked(ActivityRecord r, 2938 boolean removeFromApp, boolean oomAdj, String reason) { 2939 if (DEBUG_SWITCH || DEBUG_CLEANUP) Slog.v( 2940 TAG, "Removing activity from " + reason + ": token=" + r 2941 + ", app=" + (r.app != null ? r.app.processName : "(null)")); 2942 EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, 2943 r.userId, System.identityHashCode(r), 2944 r.task.taskId, r.shortComponentName, reason); 2945 2946 boolean removedFromHistory = false; 2947 2948 cleanUpActivityLocked(r, false, false); 2949 2950 final boolean hadApp = r.app != null; 2951 2952 if (hadApp) { 2953 if (removeFromApp) { 2954 r.app.activities.remove(r); 2955 if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { 2956 mService.mHeavyWeightProcess = null; 2957 mService.mHandler.sendEmptyMessage( 2958 ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); 2959 } 2960 if (r.app.activities.isEmpty()) { 2961 // No longer have activities, so update LRU list and oom adj. 2962 mService.updateLruProcessLocked(r.app, false, null); 2963 mService.updateOomAdjLocked(); 2964 } 2965 } 2966 2967 boolean skipDestroy = false; 2968 2969 try { 2970 if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); 2971 r.app.thread.scheduleDestroyActivity(r.appToken, r.finishing, 2972 r.configChangeFlags); 2973 } catch (Exception e) { 2974 // We can just ignore exceptions here... if the process 2975 // has crashed, our death notification will clean things 2976 // up. 2977 //Slog.w(TAG, "Exception thrown during finish", e); 2978 if (r.finishing) { 2979 removeActivityFromHistoryLocked(r); 2980 removedFromHistory = true; 2981 skipDestroy = true; 2982 } 2983 } 2984 2985 r.nowVisible = false; 2986 2987 // If the activity is finishing, we need to wait on removing it 2988 // from the list to give it a chance to do its cleanup. During 2989 // that time it may make calls back with its token so we need to 2990 // be able to find it on the list and so we don't want to remove 2991 // it from the list yet. Otherwise, we can just immediately put 2992 // it in the destroyed state since we are not removing it from the 2993 // list. 2994 if (r.finishing && !skipDestroy) { 2995 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYING: " + r 2996 + " (destroy requested)"); 2997 r.state = ActivityState.DESTROYING; 2998 Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG, r); 2999 mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); 3000 } else { 3001 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (destroy skipped)"); 3002 r.state = ActivityState.DESTROYED; 3003 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3004 r.app = null; 3005 } 3006 } else { 3007 // remove this record from the history. 3008 if (r.finishing) { 3009 removeActivityFromHistoryLocked(r); 3010 removedFromHistory = true; 3011 } else { 3012 if (DEBUG_STATES) Slog.v(TAG, "Moving to DESTROYED: " + r + " (no app)"); 3013 r.state = ActivityState.DESTROYED; 3014 if (DEBUG_APP) Slog.v(TAG, "Clearing app during destroy for activity " + r); 3015 r.app = null; 3016 } 3017 } 3018 3019 r.configChangeFlags = 0; 3020 3021 if (!mLRUActivities.remove(r) && hadApp) { 3022 Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); 3023 } 3024 3025 return removedFromHistory; 3026 } 3027 3028 final void activityDestroyedLocked(IBinder token) { 3029 final long origId = Binder.clearCallingIdentity(); 3030 try { 3031 ActivityRecord r = ActivityRecord.forToken(token); 3032 if (r != null) { 3033 mHandler.removeMessages(DESTROY_TIMEOUT_MSG, r); 3034 } 3035 if (DEBUG_CONTAINERS) Slog.d(TAG, "activityDestroyedLocked: r=" + r); 3036 3037 if (isInStackLocked(token) != null) { 3038 if (r.state == ActivityState.DESTROYING) { 3039 cleanUpActivityLocked(r, true, false); 3040 removeActivityFromHistoryLocked(r); 3041 } 3042 } 3043 mStackSupervisor.resumeTopActivitiesLocked(); 3044 } finally { 3045 Binder.restoreCallingIdentity(origId); 3046 } 3047 } 3048 3049 private void removeHistoryRecordsForAppLocked(ArrayList<ActivityRecord> list, 3050 ProcessRecord app, String listName) { 3051 int i = list.size(); 3052 if (DEBUG_CLEANUP) Slog.v( 3053 TAG, "Removing app " + app + " from list " + listName 3054 + " with " + i + " entries"); 3055 while (i > 0) { 3056 i--; 3057 ActivityRecord r = list.get(i); 3058 if (DEBUG_CLEANUP) Slog.v(TAG, "Record #" + i + " " + r); 3059 if (r.app == app) { 3060 if (DEBUG_CLEANUP) Slog.v(TAG, "---> REMOVING this entry!"); 3061 list.remove(i); 3062 removeTimeoutsForActivityLocked(r); 3063 } 3064 } 3065 } 3066 3067 boolean removeHistoryRecordsForAppLocked(ProcessRecord app) { 3068 removeHistoryRecordsForAppLocked(mLRUActivities, app, "mLRUActivities"); 3069 removeHistoryRecordsForAppLocked(mStackSupervisor.mStoppingActivities, app, 3070 "mStoppingActivities"); 3071 removeHistoryRecordsForAppLocked(mStackSupervisor.mGoingToSleepActivities, app, 3072 "mGoingToSleepActivities"); 3073 removeHistoryRecordsForAppLocked(mStackSupervisor.mWaitingVisibleActivities, app, 3074 "mWaitingVisibleActivities"); 3075 removeHistoryRecordsForAppLocked(mStackSupervisor.mFinishingActivities, app, 3076 "mFinishingActivities"); 3077 3078 boolean hasVisibleActivities = false; 3079 3080 // Clean out the history list. 3081 int i = numActivities(); 3082 if (DEBUG_CLEANUP) Slog.v( 3083 TAG, "Removing app " + app + " from history with " + i + " entries"); 3084 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3085 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3086 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3087 final ActivityRecord r = activities.get(activityNdx); 3088 --i; 3089 if (DEBUG_CLEANUP) Slog.v( 3090 TAG, "Record #" + i + " " + r + ": app=" + r.app); 3091 if (r.app == app) { 3092 boolean remove; 3093 if ((!r.haveState && !r.stateNotNeeded) || r.finishing) { 3094 // Don't currently have state for the activity, or 3095 // it is finishing -- always remove it. 3096 remove = true; 3097 } else if (r.launchCount > 2 && 3098 r.lastLaunchTime > (SystemClock.uptimeMillis()-60000)) { 3099 // We have launched this activity too many times since it was 3100 // able to run, so give up and remove it. 3101 remove = true; 3102 } else { 3103 // The process may be gone, but the activity lives on! 3104 remove = false; 3105 } 3106 if (remove) { 3107 if (DEBUG_ADD_REMOVE || DEBUG_CLEANUP) { 3108 RuntimeException here = new RuntimeException("here"); 3109 here.fillInStackTrace(); 3110 Slog.i(TAG, "Removing activity " + r + " from stack at " + i 3111 + ": haveState=" + r.haveState 3112 + " stateNotNeeded=" + r.stateNotNeeded 3113 + " finishing=" + r.finishing 3114 + " state=" + r.state, here); 3115 } 3116 if (!r.finishing) { 3117 Slog.w(TAG, "Force removing " + r + ": app died, no saved state"); 3118 EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, 3119 r.userId, System.identityHashCode(r), 3120 r.task.taskId, r.shortComponentName, 3121 "proc died without state saved"); 3122 if (r.state == ActivityState.RESUMED) { 3123 mService.updateUsageStats(r, false); 3124 } 3125 } 3126 removeActivityFromHistoryLocked(r); 3127 3128 } else { 3129 // We have the current state for this activity, so 3130 // it can be restarted later when needed. 3131 if (localLOGV) Slog.v( 3132 TAG, "Keeping entry, setting app to null"); 3133 if (r.visible) { 3134 hasVisibleActivities = true; 3135 } 3136 if (DEBUG_APP) Slog.v(TAG, "Clearing app during removeHistory for activity " 3137 + r); 3138 r.app = null; 3139 r.nowVisible = false; 3140 if (!r.haveState) { 3141 if (DEBUG_SAVED_STATE) Slog.i(TAG, 3142 "App died, clearing saved state of " + r); 3143 r.icicle = null; 3144 } 3145 } 3146 3147 cleanUpActivityLocked(r, true, true); 3148 } 3149 } 3150 } 3151 3152 return hasVisibleActivities; 3153 } 3154 3155 final void updateTransitLocked(int transit, Bundle options) { 3156 if (options != null) { 3157 ActivityRecord r = topRunningActivityLocked(null); 3158 if (r != null && r.state != ActivityState.RESUMED) { 3159 r.updateOptionsLocked(options); 3160 } else { 3161 ActivityOptions.abort(options); 3162 } 3163 } 3164 mWindowManager.prepareAppTransition(transit, false); 3165 } 3166 3167 void updateTaskMovement(TaskRecord task, boolean toFront) { 3168 if (task.isPersistable) { 3169 task.mLastTimeMoved = System.currentTimeMillis(); 3170 // Sign is used to keep tasks sorted when persisted. Tasks sent to the bottom most 3171 // recently will be most negative, tasks sent to the bottom before that will be less 3172 // negative. Similarly for recent tasks moved to the top which will be most positive. 3173 if (!toFront) { 3174 task.mLastTimeMoved *= -1; 3175 } 3176 } 3177 } 3178 3179 void moveHomeStackTaskToTop(int homeStackTaskType) { 3180 final int top = mTaskHistory.size() - 1; 3181 for (int taskNdx = top; taskNdx >= 0; --taskNdx) { 3182 final TaskRecord task = mTaskHistory.get(taskNdx); 3183 if (task.taskType == homeStackTaskType) { 3184 if (DEBUG_TASKS || DEBUG_STACK) 3185 Slog.d(TAG, "moveHomeStackTaskToTop: moving " + task); 3186 mTaskHistory.remove(taskNdx); 3187 mTaskHistory.add(top, task); 3188 updateTaskMovement(task, true); 3189 mWindowManager.moveTaskToTop(task.taskId); 3190 return; 3191 } 3192 } 3193 } 3194 3195 final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason, Bundle options) { 3196 if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); 3197 3198 final int numTasks = mTaskHistory.size(); 3199 final int index = mTaskHistory.indexOf(tr); 3200 if (numTasks == 0 || index < 0) { 3201 // nothing to do! 3202 if (reason != null && 3203 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3204 ActivityOptions.abort(options); 3205 } else { 3206 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3207 } 3208 return; 3209 } 3210 3211 moveToFront(); 3212 3213 // Shift all activities with this task up to the top 3214 // of the stack, keeping them in the same internal order. 3215 insertTaskAtTop(tr); 3216 3217 if (DEBUG_TRANSITION) Slog.v(TAG, "Prepare to front transition: task=" + tr); 3218 if (reason != null && 3219 (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3220 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3221 ActivityRecord r = topRunningActivityLocked(null); 3222 if (r != null) { 3223 mNoAnimActivities.add(r); 3224 } 3225 ActivityOptions.abort(options); 3226 } else { 3227 updateTransitLocked(AppTransition.TRANSIT_TASK_TO_FRONT, options); 3228 } 3229 3230 mWindowManager.moveTaskToTop(tr.taskId); 3231 3232 mStackSupervisor.resumeTopActivitiesLocked(); 3233 EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, tr.userId, tr.taskId); 3234 3235 if (VALIDATE_TOKENS) { 3236 validateAppTokensLocked(); 3237 } 3238 } 3239 3240 /** 3241 * Worker method for rearranging history stack. Implements the function of moving all 3242 * activities for a specific task (gathering them if disjoint) into a single group at the 3243 * bottom of the stack. 3244 * 3245 * If a watcher is installed, the action is preflighted and the watcher has an opportunity 3246 * to premeptively cancel the move. 3247 * 3248 * @param taskId The taskId to collect and move to the bottom. 3249 * @return Returns true if the move completed, false if not. 3250 */ 3251 final boolean moveTaskToBackLocked(int taskId, ActivityRecord reason) { 3252 final TaskRecord tr = taskForIdLocked(taskId); 3253 if (tr == null) { 3254 Slog.i(TAG, "moveTaskToBack: bad taskId=" + taskId); 3255 return false; 3256 } 3257 3258 Slog.i(TAG, "moveTaskToBack: " + tr); 3259 3260 mStackSupervisor.endLockTaskModeIfTaskEnding(tr); 3261 3262 // If we have a watcher, preflight the move before committing to it. First check 3263 // for *other* available tasks, but if none are available, then try again allowing the 3264 // current task to be selected. 3265 if (mStackSupervisor.isFrontStack(this) && mService.mController != null) { 3266 ActivityRecord next = topRunningActivityLocked(null, taskId); 3267 if (next == null) { 3268 next = topRunningActivityLocked(null, 0); 3269 } 3270 if (next != null) { 3271 // ask watcher if this is allowed 3272 boolean moveOK = true; 3273 try { 3274 moveOK = mService.mController.activityResuming(next.packageName); 3275 } catch (RemoteException e) { 3276 mService.mController = null; 3277 Watchdog.getInstance().setActivityController(null); 3278 } 3279 if (!moveOK) { 3280 return false; 3281 } 3282 } 3283 } 3284 3285 if (DEBUG_TRANSITION) Slog.v(TAG, 3286 "Prepare to back transition: task=" + taskId); 3287 3288 mTaskHistory.remove(tr); 3289 mTaskHistory.add(0, tr); 3290 updateTaskMovement(tr, false); 3291 3292 // There is an assumption that moving a task to the back moves it behind the home activity. 3293 // We make sure here that some activity in the stack will launch home. 3294 int numTasks = mTaskHistory.size(); 3295 for (int taskNdx = numTasks - 1; taskNdx >= 1; --taskNdx) { 3296 final TaskRecord task = mTaskHistory.get(taskNdx); 3297 if (task.isOverHomeStack()) { 3298 break; 3299 } 3300 if (taskNdx == 1) { 3301 // Set the last task before tr to go to home. 3302 task.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3303 } 3304 } 3305 3306 if (reason != null && 3307 (reason.intent.getFlags() & Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { 3308 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_NONE, false); 3309 ActivityRecord r = topRunningActivityLocked(null); 3310 if (r != null) { 3311 mNoAnimActivities.add(r); 3312 } 3313 } else { 3314 mWindowManager.prepareAppTransition(AppTransition.TRANSIT_TASK_TO_BACK, false); 3315 } 3316 mWindowManager.moveTaskToBottom(taskId); 3317 3318 if (VALIDATE_TOKENS) { 3319 validateAppTokensLocked(); 3320 } 3321 3322 final TaskRecord task = mResumedActivity != null ? mResumedActivity.task : null; 3323 if (task == tr && tr.isOverHomeStack() || numTasks <= 1 && isOnHomeDisplay()) { 3324 final int taskToReturnTo = tr.getTaskToReturnTo(); 3325 tr.setTaskToReturnTo(APPLICATION_ACTIVITY_TYPE); 3326 return mStackSupervisor.resumeHomeStackTask(taskToReturnTo, null); 3327 } 3328 3329 mStackSupervisor.resumeTopActivitiesLocked(); 3330 return true; 3331 } 3332 3333 static final void logStartActivity(int tag, ActivityRecord r, 3334 TaskRecord task) { 3335 final Uri data = r.intent.getData(); 3336 final String strData = data != null ? data.toSafeString() : null; 3337 3338 EventLog.writeEvent(tag, 3339 r.userId, System.identityHashCode(r), task.taskId, 3340 r.shortComponentName, r.intent.getAction(), 3341 r.intent.getType(), strData, r.intent.getFlags()); 3342 } 3343 3344 /** 3345 * Make sure the given activity matches the current configuration. Returns 3346 * false if the activity had to be destroyed. Returns true if the 3347 * configuration is the same, or the activity will remain running as-is 3348 * for whatever reason. Ensures the HistoryRecord is updated with the 3349 * correct configuration and all other bookkeeping is handled. 3350 */ 3351 final boolean ensureActivityConfigurationLocked(ActivityRecord r, 3352 int globalChanges) { 3353 if (mConfigWillChange) { 3354 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3355 "Skipping config check (will change): " + r); 3356 return true; 3357 } 3358 3359 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3360 "Ensuring correct configuration: " + r); 3361 3362 // Short circuit: if the two configurations are the exact same 3363 // object (the common case), then there is nothing to do. 3364 Configuration newConfig = mService.mConfiguration; 3365 if (r.configuration == newConfig && !r.forceNewConfig) { 3366 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3367 "Configuration unchanged in " + r); 3368 return true; 3369 } 3370 3371 // We don't worry about activities that are finishing. 3372 if (r.finishing) { 3373 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3374 "Configuration doesn't matter in finishing " + r); 3375 r.stopFreezingScreenLocked(false); 3376 return true; 3377 } 3378 3379 // Okay we now are going to make this activity have the new config. 3380 // But then we need to figure out how it needs to deal with that. 3381 Configuration oldConfig = r.configuration; 3382 r.configuration = newConfig; 3383 3384 // Determine what has changed. May be nothing, if this is a config 3385 // that has come back from the app after going idle. In that case 3386 // we just want to leave the official config object now in the 3387 // activity and do nothing else. 3388 final int changes = oldConfig.diff(newConfig); 3389 if (changes == 0 && !r.forceNewConfig) { 3390 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3391 "Configuration no differences in " + r); 3392 return true; 3393 } 3394 3395 // If the activity isn't currently running, just leave the new 3396 // configuration and it will pick that up next time it starts. 3397 if (r.app == null || r.app.thread == null) { 3398 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3399 "Configuration doesn't matter not running " + r); 3400 r.stopFreezingScreenLocked(false); 3401 r.forceNewConfig = false; 3402 return true; 3403 } 3404 3405 // Figure out how to handle the changes between the configurations. 3406 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { 3407 Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" 3408 + Integer.toHexString(changes) + ", handles=0x" 3409 + Integer.toHexString(r.info.getRealConfigChanged()) 3410 + ", newConfig=" + newConfig); 3411 } 3412 if ((changes&(~r.info.getRealConfigChanged())) != 0 || r.forceNewConfig) { 3413 // Aha, the activity isn't handling the change, so DIE DIE DIE. 3414 r.configChangeFlags |= changes; 3415 r.startFreezingScreenLocked(r.app, globalChanges); 3416 r.forceNewConfig = false; 3417 if (r.app == null || r.app.thread == null) { 3418 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3419 "Config is destroying non-running " + r); 3420 destroyActivityLocked(r, true, false, "config"); 3421 } else if (r.state == ActivityState.PAUSING) { 3422 // A little annoying: we are waiting for this activity to 3423 // finish pausing. Let's not do anything now, but just 3424 // flag that it needs to be restarted when done pausing. 3425 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3426 "Config is skipping already pausing " + r); 3427 r.configDestroy = true; 3428 return true; 3429 } else if (r.state == ActivityState.RESUMED) { 3430 // Try to optimize this case: the configuration is changing 3431 // and we need to restart the top, resumed activity. 3432 // Instead of doing the normal handshaking, just say 3433 // "restart!". 3434 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3435 "Config is relaunching resumed " + r); 3436 relaunchActivityLocked(r, r.configChangeFlags, true); 3437 r.configChangeFlags = 0; 3438 } else { 3439 if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, 3440 "Config is relaunching non-resumed " + r); 3441 relaunchActivityLocked(r, r.configChangeFlags, false); 3442 r.configChangeFlags = 0; 3443 } 3444 3445 // All done... tell the caller we weren't able to keep this 3446 // activity around. 3447 return false; 3448 } 3449 3450 // Default case: the activity can handle this new configuration, so 3451 // hand it over. Note that we don't need to give it the new 3452 // configuration, since we always send configuration changes to all 3453 // process when they happen so it can just use whatever configuration 3454 // it last got. 3455 if (r.app != null && r.app.thread != null) { 3456 try { 3457 if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); 3458 r.app.thread.scheduleActivityConfigurationChanged(r.appToken); 3459 } catch (RemoteException e) { 3460 // If process died, whatever. 3461 } 3462 } 3463 r.stopFreezingScreenLocked(false); 3464 3465 return true; 3466 } 3467 3468 private boolean relaunchActivityLocked(ActivityRecord r, 3469 int changes, boolean andResume) { 3470 List<ResultInfo> results = null; 3471 List<Intent> newIntents = null; 3472 if (andResume) { 3473 results = r.results; 3474 newIntents = r.newIntents; 3475 } 3476 if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r 3477 + " with results=" + results + " newIntents=" + newIntents 3478 + " andResume=" + andResume); 3479 EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY 3480 : EventLogTags.AM_RELAUNCH_ACTIVITY, r.userId, System.identityHashCode(r), 3481 r.task.taskId, r.shortComponentName); 3482 3483 r.startFreezingScreenLocked(r.app, 0); 3484 3485 mStackSupervisor.removeChildActivityContainers(r); 3486 3487 try { 3488 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, 3489 (andResume ? "Relaunching to RESUMED " : "Relaunching to PAUSED ") 3490 + r); 3491 r.forceNewConfig = false; 3492 r.app.thread.scheduleRelaunchActivity(r.appToken, results, newIntents, 3493 changes, !andResume, new Configuration(mService.mConfiguration)); 3494 // Note: don't need to call pauseIfSleepingLocked() here, because 3495 // the caller will only pass in 'andResume' if this activity is 3496 // currently resumed, which implies we aren't sleeping. 3497 } catch (RemoteException e) { 3498 if (DEBUG_SWITCH || DEBUG_STATES) Slog.i(TAG, "Relaunch failed", e); 3499 } 3500 3501 if (andResume) { 3502 r.results = null; 3503 r.newIntents = null; 3504 r.state = ActivityState.RESUMED; 3505 } else { 3506 mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); 3507 r.state = ActivityState.PAUSED; 3508 } 3509 3510 return true; 3511 } 3512 3513 boolean willActivityBeVisibleLocked(IBinder token) { 3514 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3515 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3516 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3517 final ActivityRecord r = activities.get(activityNdx); 3518 if (r.appToken == token) { 3519 return true; 3520 } 3521 if (r.fullscreen && !r.finishing) { 3522 return false; 3523 } 3524 } 3525 } 3526 final ActivityRecord r = ActivityRecord.forToken(token); 3527 if (r == null) { 3528 return false; 3529 } 3530 if (r.finishing) Slog.e(TAG, "willActivityBeVisibleLocked: Returning false," 3531 + " would have returned true for r=" + r); 3532 return !r.finishing; 3533 } 3534 3535 void closeSystemDialogsLocked() { 3536 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3537 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3538 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3539 final ActivityRecord r = activities.get(activityNdx); 3540 if ((r.info.flags&ActivityInfo.FLAG_FINISH_ON_CLOSE_SYSTEM_DIALOGS) != 0) { 3541 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "close-sys", true); 3542 } 3543 } 3544 } 3545 } 3546 3547 boolean forceStopPackageLocked(String name, boolean doit, boolean evenPersistent, int userId) { 3548 boolean didSomething = false; 3549 TaskRecord lastTask = null; 3550 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3551 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3552 int numActivities = activities.size(); 3553 for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) { 3554 ActivityRecord r = activities.get(activityNdx); 3555 final boolean samePackage = r.packageName.equals(name) 3556 || (name == null && r.userId == userId); 3557 if ((userId == UserHandle.USER_ALL || r.userId == userId) 3558 && (samePackage || r.task == lastTask) 3559 && (r.app == null || evenPersistent || !r.app.persistent)) { 3560 if (!doit) { 3561 if (r.finishing) { 3562 // If this activity is just finishing, then it is not 3563 // interesting as far as something to stop. 3564 continue; 3565 } 3566 return true; 3567 } 3568 didSomething = true; 3569 Slog.i(TAG, " Force finishing activity " + r); 3570 if (samePackage) { 3571 if (r.app != null) { 3572 r.app.removed = true; 3573 } 3574 r.app = null; 3575 } 3576 lastTask = r.task; 3577 if (finishActivityLocked(r, Activity.RESULT_CANCELED, null, "force-stop", 3578 true)) { 3579 // r has been deleted from mActivities, accommodate. 3580 --numActivities; 3581 --activityNdx; 3582 } 3583 } 3584 } 3585 } 3586 return didSomething; 3587 } 3588 3589 void getTasksLocked(List<RunningTaskInfo> list, int callingUid, boolean allowed) { 3590 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3591 final TaskRecord task = mTaskHistory.get(taskNdx); 3592 ActivityRecord r = null; 3593 ActivityRecord top = null; 3594 int numActivities = 0; 3595 int numRunning = 0; 3596 final ArrayList<ActivityRecord> activities = task.mActivities; 3597 if (activities.isEmpty()) { 3598 continue; 3599 } 3600 if (!allowed && !task.isHomeTask() && task.creatorUid != callingUid) { 3601 continue; 3602 } 3603 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3604 r = activities.get(activityNdx); 3605 3606 // Initialize state for next task if needed. 3607 if (top == null || (top.state == ActivityState.INITIALIZING)) { 3608 top = r; 3609 numActivities = numRunning = 0; 3610 } 3611 3612 // Add 'r' into the current task. 3613 numActivities++; 3614 if (r.app != null && r.app.thread != null) { 3615 numRunning++; 3616 } 3617 3618 if (localLOGV) Slog.v( 3619 TAG, r.intent.getComponent().flattenToShortString() 3620 + ": task=" + r.task); 3621 } 3622 3623 RunningTaskInfo ci = new RunningTaskInfo(); 3624 ci.id = task.taskId; 3625 ci.baseActivity = r.intent.getComponent(); 3626 ci.topActivity = top.intent.getComponent(); 3627 ci.lastActiveTime = task.lastActiveTime; 3628 3629 if (top.thumbHolder != null) { 3630 ci.description = top.thumbHolder.lastDescription; 3631 } 3632 ci.numActivities = numActivities; 3633 ci.numRunning = numRunning; 3634 //System.out.println( 3635 // "#" + maxNum + ": " + " descr=" + ci.description); 3636 list.add(ci); 3637 } 3638 } 3639 3640 public void unhandledBackLocked() { 3641 final int top = mTaskHistory.size() - 1; 3642 if (DEBUG_SWITCH) Slog.d( 3643 TAG, "Performing unhandledBack(): top activity at " + top); 3644 if (top >= 0) { 3645 final ArrayList<ActivityRecord> activities = mTaskHistory.get(top).mActivities; 3646 int activityTop = activities.size() - 1; 3647 if (activityTop > 0) { 3648 finishActivityLocked(activities.get(activityTop), Activity.RESULT_CANCELED, null, 3649 "unhandled-back", true); 3650 } 3651 } 3652 } 3653 3654 /** 3655 * Reset local parameters because an app's activity died. 3656 * @param app The app of the activity that died. 3657 * @return result from removeHistoryRecordsForAppLocked. 3658 */ 3659 boolean handleAppDiedLocked(ProcessRecord app) { 3660 if (mPausingActivity != null && mPausingActivity.app == app) { 3661 if (DEBUG_PAUSE || DEBUG_CLEANUP) Slog.v(TAG, 3662 "App died while pausing: " + mPausingActivity); 3663 mPausingActivity = null; 3664 } 3665 if (mLastPausedActivity != null && mLastPausedActivity.app == app) { 3666 mLastPausedActivity = null; 3667 mLastNoHistoryActivity = null; 3668 } 3669 3670 return removeHistoryRecordsForAppLocked(app); 3671 } 3672 3673 void handleAppCrashLocked(ProcessRecord app) { 3674 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3675 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3676 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3677 final ActivityRecord r = activities.get(activityNdx); 3678 if (r.app == app) { 3679 Slog.w(TAG, " Force finishing activity " 3680 + r.intent.getComponent().flattenToShortString()); 3681 finishActivityLocked(r, Activity.RESULT_CANCELED, null, "crashed", false); 3682 } 3683 } 3684 } 3685 } 3686 3687 boolean dumpActivitiesLocked(FileDescriptor fd, PrintWriter pw, boolean dumpAll, 3688 boolean dumpClient, String dumpPackage, boolean needSep, String header) { 3689 boolean printed = false; 3690 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3691 final TaskRecord task = mTaskHistory.get(taskNdx); 3692 printed |= ActivityStackSupervisor.dumpHistoryList(fd, pw, 3693 mTaskHistory.get(taskNdx).mActivities, " ", "Hist", true, !dumpAll, 3694 dumpClient, dumpPackage, needSep, header, 3695 " Task id #" + task.taskId); 3696 if (printed) { 3697 header = null; 3698 } 3699 } 3700 return printed; 3701 } 3702 3703 ArrayList<ActivityRecord> getDumpActivitiesLocked(String name) { 3704 ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>(); 3705 3706 if ("all".equals(name)) { 3707 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3708 activities.addAll(mTaskHistory.get(taskNdx).mActivities); 3709 } 3710 } else if ("top".equals(name)) { 3711 final int top = mTaskHistory.size() - 1; 3712 if (top >= 0) { 3713 final ArrayList<ActivityRecord> list = mTaskHistory.get(top).mActivities; 3714 int listTop = list.size() - 1; 3715 if (listTop >= 0) { 3716 activities.add(list.get(listTop)); 3717 } 3718 } 3719 } else { 3720 ItemMatcher matcher = new ItemMatcher(); 3721 matcher.build(name); 3722 3723 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3724 for (ActivityRecord r1 : mTaskHistory.get(taskNdx).mActivities) { 3725 if (matcher.match(r1, r1.intent.getComponent())) { 3726 activities.add(r1); 3727 } 3728 } 3729 } 3730 } 3731 3732 return activities; 3733 } 3734 3735 ActivityRecord restartPackage(String packageName) { 3736 ActivityRecord starting = topRunningActivityLocked(null); 3737 3738 // All activities that came from the package must be 3739 // restarted as if there was a config change. 3740 for (int taskNdx = mTaskHistory.size() - 1; taskNdx >= 0; --taskNdx) { 3741 final ArrayList<ActivityRecord> activities = mTaskHistory.get(taskNdx).mActivities; 3742 for (int activityNdx = activities.size() - 1; activityNdx >= 0; --activityNdx) { 3743 final ActivityRecord a = activities.get(activityNdx); 3744 if (a.info.packageName.equals(packageName)) { 3745 a.forceNewConfig = true; 3746 if (starting != null && a == starting && a.visible) { 3747 a.startFreezingScreenLocked(starting.app, 3748 ActivityInfo.CONFIG_SCREEN_LAYOUT); 3749 } 3750 } 3751 } 3752 } 3753 3754 return starting; 3755 } 3756 3757 void removeTask(TaskRecord task) { 3758 mStackSupervisor.endLockTaskModeIfTaskEnding(task); 3759 mWindowManager.removeTask(task.taskId); 3760 final ActivityRecord r = mResumedActivity; 3761 if (r != null && r.task == task) { 3762 mResumedActivity = null; 3763 } 3764 3765 final int taskNdx = mTaskHistory.indexOf(task); 3766 final int topTaskNdx = mTaskHistory.size() - 1; 3767 if (task.isOverHomeStack() && taskNdx < topTaskNdx) { 3768 final TaskRecord nextTask = mTaskHistory.get(taskNdx + 1); 3769 if (!nextTask.isOverHomeStack()) { 3770 nextTask.setTaskToReturnTo(HOME_ACTIVITY_TYPE); 3771 } 3772 } 3773 mTaskHistory.remove(task); 3774 updateTaskMovement(task, true); 3775 3776 if (task.mActivities.isEmpty()) { 3777 final boolean isVoiceSession = task.voiceSession != null; 3778 if (isVoiceSession) { 3779 try { 3780 task.voiceSession.taskFinished(task.intent, task.taskId); 3781 } catch (RemoteException e) { 3782 } 3783 } 3784 if (task.autoRemoveFromRecents() || isVoiceSession) { 3785 // Task creator asked to remove this when done, or this task was a voice 3786 // interaction, so it should not remain on the recent tasks list. 3787 mService.mRecentTasks.remove(task); 3788 } 3789 } 3790 3791 if (mTaskHistory.isEmpty()) { 3792 if (DEBUG_STACK) Slog.i(TAG, "removeTask: moving to back stack=" + this); 3793 if (isOnHomeDisplay()) { 3794 mStackSupervisor.moveHomeStack(!isHomeStack()); 3795 } 3796 if (mStacks != null) { 3797 mStacks.remove(this); 3798 mStacks.add(0, this); 3799 } 3800 mActivityContainer.onTaskListEmptyLocked(); 3801 } 3802 } 3803 3804 TaskRecord createTaskRecord(int taskId, ActivityInfo info, Intent intent, 3805 IVoiceInteractionSession voiceSession, IVoiceInteractor voiceInteractor, 3806 boolean toTop) { 3807 TaskRecord task = new TaskRecord(mService, taskId, info, intent, voiceSession, 3808 voiceInteractor); 3809 addTask(task, toTop, false); 3810 return task; 3811 } 3812 3813 ArrayList<TaskRecord> getAllTasks() { 3814 return new ArrayList<TaskRecord>(mTaskHistory); 3815 } 3816 3817 void addTask(final TaskRecord task, final boolean toTop, boolean moving) { 3818 task.stack = this; 3819 if (toTop) { 3820 insertTaskAtTop(task); 3821 } else { 3822 mTaskHistory.add(0, task); 3823 updateTaskMovement(task, false); 3824 } 3825 if (!moving && task.voiceSession != null) { 3826 try { 3827 task.voiceSession.taskStarted(task.intent, task.taskId); 3828 } catch (RemoteException e) { 3829 } 3830 } 3831 } 3832 3833 public int getStackId() { 3834 return mStackId; 3835 } 3836 3837 @Override 3838 public String toString() { 3839 return "ActivityStack{" + Integer.toHexString(System.identityHashCode(this)) 3840 + " stackId=" + mStackId + ", " + mTaskHistory.size() + " tasks}"; 3841 } 3842} 3843