Dianne Hackborn | 50dc3bc | 2010-06-25 10:05:59 -0700 | [diff] [blame] | 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 | |
| 17 | package com.android.server.am; |
| 18 | |
| 19 | import com.android.internal.app.HeavyWeightSwitcherActivity; |
| 20 | import com.android.internal.os.BatteryStatsImpl; |
| 21 | import com.android.server.am.ActivityManagerService.PendingActivityLaunch; |
| 22 | |
| 23 | import android.app.Activity; |
| 24 | import android.app.AppGlobals; |
| 25 | import android.app.IActivityManager; |
| 26 | import static android.app.IActivityManager.START_CLASS_NOT_FOUND; |
| 27 | import static android.app.IActivityManager.START_DELIVERED_TO_TOP; |
| 28 | import static android.app.IActivityManager.START_FORWARD_AND_REQUEST_CONFLICT; |
| 29 | import static android.app.IActivityManager.START_INTENT_NOT_RESOLVED; |
| 30 | import static android.app.IActivityManager.START_PERMISSION_DENIED; |
| 31 | import static android.app.IActivityManager.START_RETURN_INTENT_TO_CALLER; |
| 32 | import static android.app.IActivityManager.START_SUCCESS; |
| 33 | import static android.app.IActivityManager.START_SWITCHES_CANCELED; |
| 34 | import static android.app.IActivityManager.START_TASK_TO_FRONT; |
| 35 | import android.app.IApplicationThread; |
| 36 | import android.app.PendingIntent; |
| 37 | import android.app.ResultInfo; |
| 38 | import android.app.IActivityManager.WaitResult; |
| 39 | import android.content.ComponentName; |
| 40 | import android.content.Context; |
| 41 | import android.content.IIntentSender; |
| 42 | import android.content.Intent; |
| 43 | import android.content.IntentSender; |
| 44 | import android.content.pm.ActivityInfo; |
| 45 | import android.content.pm.ApplicationInfo; |
| 46 | import android.content.pm.PackageManager; |
| 47 | import android.content.pm.ResolveInfo; |
| 48 | import android.content.res.Configuration; |
| 49 | import android.net.Uri; |
| 50 | import android.os.Binder; |
| 51 | import android.os.Bundle; |
| 52 | import android.os.Handler; |
| 53 | import android.os.IBinder; |
| 54 | import android.os.Message; |
| 55 | import android.os.PowerManager; |
| 56 | import android.os.RemoteException; |
| 57 | import android.os.SystemClock; |
| 58 | import android.util.EventLog; |
| 59 | import android.util.Log; |
| 60 | import android.util.Slog; |
| 61 | import android.view.WindowManagerPolicy; |
| 62 | |
| 63 | import java.lang.ref.WeakReference; |
| 64 | import java.util.ArrayList; |
| 65 | import java.util.Iterator; |
| 66 | import java.util.List; |
| 67 | |
| 68 | /** |
| 69 | * State and management of a single stack of activities. |
| 70 | */ |
| 71 | public class ActivityStack { |
| 72 | static final String TAG = ActivityManagerService.TAG; |
| 73 | static final boolean localLOGV = ActivityManagerService.localLOGV; |
| 74 | static final boolean DEBUG_SWITCH = ActivityManagerService.DEBUG_SWITCH; |
| 75 | static final boolean DEBUG_PAUSE = ActivityManagerService.DEBUG_PAUSE; |
| 76 | static final boolean DEBUG_VISBILITY = ActivityManagerService.DEBUG_VISBILITY; |
| 77 | static final boolean DEBUG_USER_LEAVING = ActivityManagerService.DEBUG_USER_LEAVING; |
| 78 | static final boolean DEBUG_TRANSITION = ActivityManagerService.DEBUG_TRANSITION; |
| 79 | static final boolean DEBUG_RESULTS = ActivityManagerService.DEBUG_RESULTS; |
| 80 | static final boolean DEBUG_CONFIGURATION = ActivityManagerService.DEBUG_CONFIGURATION; |
| 81 | static final boolean DEBUG_TASKS = ActivityManagerService.DEBUG_TASKS; |
| 82 | |
| 83 | static final boolean VALIDATE_TOKENS = ActivityManagerService.VALIDATE_TOKENS; |
| 84 | |
| 85 | // How long we wait until giving up on the last activity telling us it |
| 86 | // is idle. |
| 87 | static final int IDLE_TIMEOUT = 10*1000; |
| 88 | |
| 89 | // How long we wait until giving up on the last activity to pause. This |
| 90 | // is short because it directly impacts the responsiveness of starting the |
| 91 | // next activity. |
| 92 | static final int PAUSE_TIMEOUT = 500; |
| 93 | |
| 94 | // How long we can hold the launch wake lock before giving up. |
| 95 | static final int LAUNCH_TIMEOUT = 10*1000; |
| 96 | |
| 97 | // How long we wait until giving up on an activity telling us it has |
| 98 | // finished destroying itself. |
| 99 | static final int DESTROY_TIMEOUT = 10*1000; |
| 100 | |
| 101 | // How long until we reset a task when the user returns to it. Currently |
| 102 | // 30 minutes. |
| 103 | static final long ACTIVITY_INACTIVE_RESET_TIME = 1000*60*30; |
| 104 | |
| 105 | // Set to false to disable the preview that is shown while a new activity |
| 106 | // is being started. |
| 107 | static final boolean SHOW_APP_STARTING_PREVIEW = true; |
| 108 | |
| 109 | enum ActivityState { |
| 110 | INITIALIZING, |
| 111 | RESUMED, |
| 112 | PAUSING, |
| 113 | PAUSED, |
| 114 | STOPPING, |
| 115 | STOPPED, |
| 116 | FINISHING, |
| 117 | DESTROYING, |
| 118 | DESTROYED |
| 119 | } |
| 120 | |
| 121 | final ActivityManagerService mService; |
| 122 | final boolean mMainStack; |
| 123 | |
| 124 | final Context mContext; |
| 125 | |
| 126 | /** |
| 127 | * The back history of all previous (and possibly still |
| 128 | * running) activities. It contains HistoryRecord objects. |
| 129 | */ |
| 130 | final ArrayList mHistory = new ArrayList(); |
| 131 | |
| 132 | /** |
| 133 | * List of running activities, sorted by recent usage. |
| 134 | * The first entry in the list is the least recently used. |
| 135 | * It contains HistoryRecord objects. |
| 136 | */ |
| 137 | final ArrayList mLRUActivities = new ArrayList(); |
| 138 | |
| 139 | /** |
| 140 | * List of activities that are waiting for a new activity |
| 141 | * to become visible before completing whatever operation they are |
| 142 | * supposed to do. |
| 143 | */ |
| 144 | final ArrayList<ActivityRecord> mWaitingVisibleActivities |
| 145 | = new ArrayList<ActivityRecord>(); |
| 146 | |
| 147 | /** |
| 148 | * List of activities that are ready to be stopped, but waiting |
| 149 | * for the next activity to settle down before doing so. It contains |
| 150 | * HistoryRecord objects. |
| 151 | */ |
| 152 | final ArrayList<ActivityRecord> mStoppingActivities |
| 153 | = new ArrayList<ActivityRecord>(); |
| 154 | |
| 155 | /** |
| 156 | * Animations that for the current transition have requested not to |
| 157 | * be considered for the transition animation. |
| 158 | */ |
| 159 | final ArrayList<ActivityRecord> mNoAnimActivities |
| 160 | = new ArrayList<ActivityRecord>(); |
| 161 | |
| 162 | /** |
| 163 | * List of activities that are ready to be finished, but waiting |
| 164 | * for the previous activity to settle down before doing so. It contains |
| 165 | * HistoryRecord objects. |
| 166 | */ |
| 167 | final ArrayList<ActivityRecord> mFinishingActivities |
| 168 | = new ArrayList<ActivityRecord>(); |
| 169 | |
| 170 | /** |
| 171 | * List of people waiting to find out about the next launched activity. |
| 172 | */ |
| 173 | final ArrayList<IActivityManager.WaitResult> mWaitingActivityLaunched |
| 174 | = new ArrayList<IActivityManager.WaitResult>(); |
| 175 | |
| 176 | /** |
| 177 | * List of people waiting to find out about the next visible activity. |
| 178 | */ |
| 179 | final ArrayList<IActivityManager.WaitResult> mWaitingActivityVisible |
| 180 | = new ArrayList<IActivityManager.WaitResult>(); |
| 181 | |
| 182 | /** |
| 183 | * Set when the system is going to sleep, until we have |
| 184 | * successfully paused the current activity and released our wake lock. |
| 185 | * At that point the system is allowed to actually sleep. |
| 186 | */ |
| 187 | final PowerManager.WakeLock mGoingToSleep; |
| 188 | |
| 189 | /** |
| 190 | * We don't want to allow the device to go to sleep while in the process |
| 191 | * of launching an activity. This is primarily to allow alarm intent |
| 192 | * receivers to launch an activity and get that to run before the device |
| 193 | * goes back to sleep. |
| 194 | */ |
| 195 | final PowerManager.WakeLock mLaunchingActivity; |
| 196 | |
| 197 | /** |
| 198 | * When we are in the process of pausing an activity, before starting the |
| 199 | * next one, this variable holds the activity that is currently being paused. |
| 200 | */ |
| 201 | ActivityRecord mPausingActivity = null; |
| 202 | |
| 203 | /** |
| 204 | * This is the last activity that we put into the paused state. This is |
| 205 | * used to determine if we need to do an activity transition while sleeping, |
| 206 | * when we normally hold the top activity paused. |
| 207 | */ |
| 208 | ActivityRecord mLastPausedActivity = null; |
| 209 | |
| 210 | /** |
| 211 | * Current activity that is resumed, or null if there is none. |
| 212 | */ |
| 213 | ActivityRecord mResumedActivity = null; |
| 214 | |
| 215 | /** |
| 216 | * Set when we know we are going to be calling updateConfiguration() |
| 217 | * soon, so want to skip intermediate config checks. |
| 218 | */ |
| 219 | boolean mConfigWillChange; |
| 220 | |
| 221 | /** |
| 222 | * Set to indicate whether to issue an onUserLeaving callback when a |
| 223 | * newly launched activity is being brought in front of us. |
| 224 | */ |
| 225 | boolean mUserLeaving = false; |
| 226 | |
| 227 | long mInitialStartTime = 0; |
| 228 | |
| 229 | static final int PAUSE_TIMEOUT_MSG = 9; |
| 230 | static final int IDLE_TIMEOUT_MSG = 10; |
| 231 | static final int IDLE_NOW_MSG = 11; |
| 232 | static final int LAUNCH_TIMEOUT_MSG = 16; |
| 233 | static final int DESTROY_TIMEOUT_MSG = 17; |
| 234 | static final int RESUME_TOP_ACTIVITY_MSG = 19; |
| 235 | |
| 236 | final Handler mHandler = new Handler() { |
| 237 | //public Handler() { |
| 238 | // if (localLOGV) Slog.v(TAG, "Handler started!"); |
| 239 | //} |
| 240 | |
| 241 | public void handleMessage(Message msg) { |
| 242 | switch (msg.what) { |
| 243 | case PAUSE_TIMEOUT_MSG: { |
| 244 | IBinder token = (IBinder)msg.obj; |
| 245 | // We don't at this point know if the activity is fullscreen, |
| 246 | // so we need to be conservative and assume it isn't. |
| 247 | Slog.w(TAG, "Activity pause timeout for " + token); |
| 248 | activityPaused(token, null, true); |
| 249 | } break; |
| 250 | case IDLE_TIMEOUT_MSG: { |
| 251 | if (mService.mDidDexOpt) { |
| 252 | mService.mDidDexOpt = false; |
| 253 | Message nmsg = mHandler.obtainMessage(IDLE_TIMEOUT_MSG); |
| 254 | nmsg.obj = msg.obj; |
| 255 | mHandler.sendMessageDelayed(nmsg, IDLE_TIMEOUT); |
| 256 | return; |
| 257 | } |
| 258 | // We don't at this point know if the activity is fullscreen, |
| 259 | // so we need to be conservative and assume it isn't. |
| 260 | IBinder token = (IBinder)msg.obj; |
| 261 | Slog.w(TAG, "Activity idle timeout for " + token); |
| 262 | activityIdleInternal(token, true, null); |
| 263 | } break; |
| 264 | case DESTROY_TIMEOUT_MSG: { |
| 265 | IBinder token = (IBinder)msg.obj; |
| 266 | // We don't at this point know if the activity is fullscreen, |
| 267 | // so we need to be conservative and assume it isn't. |
| 268 | Slog.w(TAG, "Activity destroy timeout for " + token); |
| 269 | activityDestroyed(token); |
| 270 | } break; |
| 271 | case IDLE_NOW_MSG: { |
| 272 | IBinder token = (IBinder)msg.obj; |
| 273 | activityIdleInternal(token, false, null); |
| 274 | } break; |
| 275 | case LAUNCH_TIMEOUT_MSG: { |
| 276 | if (mService.mDidDexOpt) { |
| 277 | mService.mDidDexOpt = false; |
| 278 | Message nmsg = mHandler.obtainMessage(LAUNCH_TIMEOUT_MSG); |
| 279 | mHandler.sendMessageDelayed(nmsg, LAUNCH_TIMEOUT); |
| 280 | return; |
| 281 | } |
| 282 | synchronized (mService) { |
| 283 | if (mLaunchingActivity.isHeld()) { |
| 284 | Slog.w(TAG, "Launch timeout has expired, giving up wake lock!"); |
| 285 | mLaunchingActivity.release(); |
| 286 | } |
| 287 | } |
| 288 | } break; |
| 289 | case RESUME_TOP_ACTIVITY_MSG: { |
| 290 | synchronized (mService) { |
| 291 | resumeTopActivityLocked(null); |
| 292 | } |
| 293 | } break; |
| 294 | } |
| 295 | } |
| 296 | }; |
| 297 | |
| 298 | ActivityStack(ActivityManagerService service, Context context, boolean mainStack) { |
| 299 | mService = service; |
| 300 | mContext = context; |
| 301 | mMainStack = mainStack; |
| 302 | PowerManager pm = |
| 303 | (PowerManager)context.getSystemService(Context.POWER_SERVICE); |
| 304 | mGoingToSleep = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "ActivityManager-Sleep"); |
| 305 | mLaunchingActivity = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "ActivityManager-Launch"); |
| 306 | mLaunchingActivity.setReferenceCounted(false); |
| 307 | } |
| 308 | |
| 309 | final ActivityRecord topRunningActivityLocked(ActivityRecord notTop) { |
| 310 | int i = mHistory.size()-1; |
| 311 | while (i >= 0) { |
| 312 | ActivityRecord r = (ActivityRecord)mHistory.get(i); |
| 313 | if (!r.finishing && r != notTop) { |
| 314 | return r; |
| 315 | } |
| 316 | i--; |
| 317 | } |
| 318 | return null; |
| 319 | } |
| 320 | |
| 321 | final ActivityRecord topRunningNonDelayedActivityLocked(ActivityRecord notTop) { |
| 322 | int i = mHistory.size()-1; |
| 323 | while (i >= 0) { |
| 324 | ActivityRecord r = (ActivityRecord)mHistory.get(i); |
| 325 | if (!r.finishing && !r.delayedResume && r != notTop) { |
| 326 | return r; |
| 327 | } |
| 328 | i--; |
| 329 | } |
| 330 | return null; |
| 331 | } |
| 332 | |
| 333 | /** |
| 334 | * This is a simplified version of topRunningActivityLocked that provides a number of |
| 335 | * optional skip-over modes. It is intended for use with the ActivityController hook only. |
| 336 | * |
| 337 | * @param token If non-null, any history records matching this token will be skipped. |
| 338 | * @param taskId If non-zero, we'll attempt to skip over records with the same task ID. |
| 339 | * |
| 340 | * @return Returns the HistoryRecord of the next activity on the stack. |
| 341 | */ |
| 342 | final ActivityRecord topRunningActivityLocked(IBinder token, int taskId) { |
| 343 | int i = mHistory.size()-1; |
| 344 | while (i >= 0) { |
| 345 | ActivityRecord r = (ActivityRecord)mHistory.get(i); |
| 346 | // Note: the taskId check depends on real taskId fields being non-zero |
| 347 | if (!r.finishing && (token != r) && (taskId != r.task.taskId)) { |
| 348 | return r; |
| 349 | } |
| 350 | i--; |
| 351 | } |
| 352 | return null; |
| 353 | } |
| 354 | |
| 355 | final int indexOfTokenLocked(IBinder token) { |
| 356 | int count = mHistory.size(); |
| 357 | |
| 358 | // convert the token to an entry in the history. |
| 359 | int index = -1; |
| 360 | for (int i=count-1; i>=0; i--) { |
| 361 | Object o = mHistory.get(i); |
| 362 | if (o == token) { |
| 363 | index = i; |
| 364 | break; |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | return index; |
| 369 | } |
| 370 | |
| 371 | private final boolean updateLRUListLocked(ActivityRecord r) { |
| 372 | final boolean hadit = mLRUActivities.remove(r); |
| 373 | mLRUActivities.add(r); |
| 374 | return hadit; |
| 375 | } |
| 376 | |
| 377 | /** |
| 378 | * Returns the top activity in any existing task matching the given |
| 379 | * Intent. Returns null if no such task is found. |
| 380 | */ |
| 381 | private ActivityRecord findTaskLocked(Intent intent, ActivityInfo info) { |
| 382 | ComponentName cls = intent.getComponent(); |
| 383 | if (info.targetActivity != null) { |
| 384 | cls = new ComponentName(info.packageName, info.targetActivity); |
| 385 | } |
| 386 | |
| 387 | TaskRecord cp = null; |
| 388 | |
| 389 | final int N = mHistory.size(); |
| 390 | for (int i=(N-1); i>=0; i--) { |
| 391 | ActivityRecord r = (ActivityRecord)mHistory.get(i); |
| 392 | if (!r.finishing && r.task != cp |
| 393 | && r.launchMode != ActivityInfo.LAUNCH_SINGLE_INSTANCE) { |
| 394 | cp = r.task; |
| 395 | //Slog.i(TAG, "Comparing existing cls=" + r.task.intent.getComponent().flattenToShortString() |
| 396 | // + "/aff=" + r.task.affinity + " to new cls=" |
| 397 | // + intent.getComponent().flattenToShortString() + "/aff=" + taskAffinity); |
| 398 | if (r.task.affinity != null) { |
| 399 | if (r.task.affinity.equals(info.taskAffinity)) { |
| 400 | //Slog.i(TAG, "Found matching affinity!"); |
| 401 | return r; |
| 402 | } |
| 403 | } else if (r.task.intent != null |
| 404 | && r.task.intent.getComponent().equals(cls)) { |
| 405 | //Slog.i(TAG, "Found matching class!"); |
| 406 | //dump(); |
| 407 | //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); |
| 408 | return r; |
| 409 | } else if (r.task.affinityIntent != null |
| 410 | && r.task.affinityIntent.getComponent().equals(cls)) { |
| 411 | //Slog.i(TAG, "Found matching class!"); |
| 412 | //dump(); |
| 413 | //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); |
| 414 | return r; |
| 415 | } |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | return null; |
| 420 | } |
| 421 | |
| 422 | /** |
| 423 | * Returns the first activity (starting from the top of the stack) that |
| 424 | * is the same as the given activity. Returns null if no such activity |
| 425 | * is found. |
| 426 | */ |
| 427 | private ActivityRecord findActivityLocked(Intent intent, ActivityInfo info) { |
| 428 | ComponentName cls = intent.getComponent(); |
| 429 | if (info.targetActivity != null) { |
| 430 | cls = new ComponentName(info.packageName, info.targetActivity); |
| 431 | } |
| 432 | |
| 433 | final int N = mHistory.size(); |
| 434 | for (int i=(N-1); i>=0; i--) { |
| 435 | ActivityRecord r = (ActivityRecord)mHistory.get(i); |
| 436 | if (!r.finishing) { |
| 437 | if (r.intent.getComponent().equals(cls)) { |
| 438 | //Slog.i(TAG, "Found matching class!"); |
| 439 | //dump(); |
| 440 | //Slog.i(TAG, "For Intent " + intent + " bringing to top: " + r.intent); |
| 441 | return r; |
| 442 | } |
| 443 | } |
| 444 | } |
| 445 | |
| 446 | return null; |
| 447 | } |
| 448 | |
| 449 | final boolean realStartActivityLocked(ActivityRecord r, |
| 450 | ProcessRecord app, boolean andResume, boolean checkConfig) |
| 451 | throws RemoteException { |
| 452 | |
| 453 | r.startFreezingScreenLocked(app, 0); |
| 454 | mService.mWindowManager.setAppVisibility(r, true); |
| 455 | |
| 456 | // Have the window manager re-evaluate the orientation of |
| 457 | // the screen based on the new activity order. Note that |
| 458 | // as a result of this, it can call back into the activity |
| 459 | // manager with a new orientation. We don't care about that, |
| 460 | // because the activity is not currently running so we are |
| 461 | // just restarting it anyway. |
| 462 | if (checkConfig) { |
| 463 | Configuration config = mService.mWindowManager.updateOrientationFromAppTokens( |
| 464 | mService.mConfiguration, |
| 465 | r.mayFreezeScreenLocked(app) ? r : null); |
| 466 | mService.updateConfigurationLocked(config, r); |
| 467 | } |
| 468 | |
| 469 | r.app = app; |
| 470 | |
| 471 | if (localLOGV) Slog.v(TAG, "Launching: " + r); |
| 472 | |
| 473 | int idx = app.activities.indexOf(r); |
| 474 | if (idx < 0) { |
| 475 | app.activities.add(r); |
| 476 | } |
| 477 | mService.updateLruProcessLocked(app, true, true); |
| 478 | |
| 479 | try { |
| 480 | if (app.thread == null) { |
| 481 | throw new RemoteException(); |
| 482 | } |
| 483 | List<ResultInfo> results = null; |
| 484 | List<Intent> newIntents = null; |
| 485 | if (andResume) { |
| 486 | results = r.results; |
| 487 | newIntents = r.newIntents; |
| 488 | } |
| 489 | if (DEBUG_SWITCH) Slog.v(TAG, "Launching: " + r |
| 490 | + " icicle=" + r.icicle |
| 491 | + " with results=" + results + " newIntents=" + newIntents |
| 492 | + " andResume=" + andResume); |
| 493 | if (andResume) { |
| 494 | EventLog.writeEvent(EventLogTags.AM_RESTART_ACTIVITY, |
| 495 | System.identityHashCode(r), |
| 496 | r.task.taskId, r.shortComponentName); |
| 497 | } |
| 498 | if (r.isHomeActivity) { |
| 499 | mService.mHomeProcess = app; |
| 500 | } |
| 501 | mService.ensurePackageDexOpt(r.intent.getComponent().getPackageName()); |
| 502 | app.thread.scheduleLaunchActivity(new Intent(r.intent), r, |
| 503 | System.identityHashCode(r), |
| 504 | r.info, r.icicle, results, newIntents, !andResume, |
| 505 | mService.isNextTransitionForward()); |
| 506 | |
| 507 | if ((app.info.flags&ApplicationInfo.FLAG_HEAVY_WEIGHT) != 0) { |
| 508 | // This may be a heavy-weight process! Note that the package |
| 509 | // manager will ensure that only activity can run in the main |
| 510 | // process of the .apk, which is the only thing that will be |
| 511 | // considered heavy-weight. |
| 512 | if (app.processName.equals(app.info.packageName)) { |
| 513 | if (mService.mHeavyWeightProcess != null |
| 514 | && mService.mHeavyWeightProcess != app) { |
| 515 | Log.w(TAG, "Starting new heavy weight process " + app |
| 516 | + " when already running " |
| 517 | + mService.mHeavyWeightProcess); |
| 518 | } |
| 519 | mService.mHeavyWeightProcess = app; |
| 520 | Message msg = mService.mHandler.obtainMessage( |
| 521 | ActivityManagerService.POST_HEAVY_NOTIFICATION_MSG); |
| 522 | msg.obj = r; |
| 523 | mService.mHandler.sendMessage(msg); |
| 524 | } |
| 525 | } |
| 526 | |
| 527 | } catch (RemoteException e) { |
| 528 | if (r.launchFailed) { |
| 529 | // This is the second time we failed -- finish activity |
| 530 | // and give up. |
| 531 | Slog.e(TAG, "Second failure launching " |
| 532 | + r.intent.getComponent().flattenToShortString() |
| 533 | + ", giving up", e); |
| 534 | mService.appDiedLocked(app, app.pid, app.thread); |
| 535 | requestFinishActivityLocked(r, Activity.RESULT_CANCELED, null, |
| 536 | "2nd-crash"); |
| 537 | return false; |
| 538 | } |
| 539 | |
| 540 | // This is the first time we failed -- restart process and |
| 541 | // retry. |
| 542 | app.activities.remove(r); |
| 543 | throw e; |
| 544 | } |
| 545 | |
| 546 | r.launchFailed = false; |
| 547 | if (updateLRUListLocked(r)) { |
| 548 | Slog.w(TAG, "Activity " + r |
| 549 | + " being launched, but already in LRU list"); |
| 550 | } |
| 551 | |
| 552 | if (andResume) { |
| 553 | // As part of the process of launching, ActivityThread also performs |
| 554 | // a resume. |
| 555 | r.state = ActivityState.RESUMED; |
| 556 | r.icicle = null; |
| 557 | r.haveState = false; |
| 558 | r.stopped = false; |
| 559 | mResumedActivity = r; |
| 560 | r.task.touchActiveTime(); |
| 561 | completeResumeLocked(r); |
| 562 | pauseIfSleepingLocked(); |
| 563 | } else { |
| 564 | // This activity is not starting in the resumed state... which |
| 565 | // should look like we asked it to pause+stop (but remain visible), |
| 566 | // and it has done so and reported back the current icicle and |
| 567 | // other state. |
| 568 | r.state = ActivityState.STOPPED; |
| 569 | r.stopped = true; |
| 570 | } |
| 571 | |
| 572 | // Launch the new version setup screen if needed. We do this -after- |
| 573 | // launching the initial activity (that is, home), so that it can have |
| 574 | // a chance to initialize itself while in the background, making the |
| 575 | // switch back to it faster and look better. |
| 576 | if (mMainStack) { |
| 577 | mService.startSetupActivityLocked(); |
| 578 | } |
| 579 | |
| 580 | return true; |
| 581 | } |
| 582 | |
| 583 | private final void startSpecificActivityLocked(ActivityRecord r, |
| 584 | boolean andResume, boolean checkConfig) { |
| 585 | // Is this activity's application already running? |
| 586 | ProcessRecord app = mService.getProcessRecordLocked(r.processName, |
| 587 | r.info.applicationInfo.uid); |
| 588 | |
| 589 | if (r.startTime == 0) { |
| 590 | r.startTime = SystemClock.uptimeMillis(); |
| 591 | if (mInitialStartTime == 0) { |
| 592 | mInitialStartTime = r.startTime; |
| 593 | } |
| 594 | } else if (mInitialStartTime == 0) { |
| 595 | mInitialStartTime = SystemClock.uptimeMillis(); |
| 596 | } |
| 597 | |
| 598 | if (app != null && app.thread != null) { |
| 599 | try { |
| 600 | realStartActivityLocked(r, app, andResume, checkConfig); |
| 601 | return; |
| 602 | } catch (RemoteException e) { |
| 603 | Slog.w(TAG, "Exception when starting activity " |
| 604 | + r.intent.getComponent().flattenToShortString(), e); |
| 605 | } |
| 606 | |
| 607 | // If a dead object exception was thrown -- fall through to |
| 608 | // restart the application. |
| 609 | } |
| 610 | |
| 611 | mService.startProcessLocked(r.processName, r.info.applicationInfo, true, 0, |
| 612 | "activity", r.intent.getComponent(), false); |
| 613 | } |
| 614 | |
| 615 | void pauseIfSleepingLocked() { |
| 616 | if (mService.mSleeping || mService.mShuttingDown) { |
| 617 | if (!mGoingToSleep.isHeld()) { |
| 618 | mGoingToSleep.acquire(); |
| 619 | if (mLaunchingActivity.isHeld()) { |
| 620 | mLaunchingActivity.release(); |
| 621 | mService.mHandler.removeMessages(LAUNCH_TIMEOUT_MSG); |
| 622 | } |
| 623 | } |
| 624 | |
| 625 | // If we are not currently pausing an activity, get the current |
| 626 | // one to pause. If we are pausing one, we will just let that stuff |
| 627 | // run and release the wake lock when all done. |
| 628 | if (mPausingActivity == null) { |
| 629 | if (DEBUG_PAUSE) Slog.v(TAG, "Sleep needs to pause..."); |
| 630 | if (DEBUG_USER_LEAVING) Slog.v(TAG, "Sleep => pause with userLeaving=false"); |
| 631 | startPausingLocked(false, true); |
| 632 | } |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | private final void startPausingLocked(boolean userLeaving, boolean uiSleeping) { |
| 637 | if (mPausingActivity != null) { |
| 638 | RuntimeException e = new RuntimeException(); |
| 639 | Slog.e(TAG, "Trying to pause when pause is already pending for " |
| 640 | + mPausingActivity, e); |
| 641 | } |
| 642 | ActivityRecord prev = mResumedActivity; |
| 643 | if (prev == null) { |
| 644 | RuntimeException e = new RuntimeException(); |
| 645 | Slog.e(TAG, "Trying to pause when nothing is resumed", e); |
| 646 | resumeTopActivityLocked(null); |
| 647 | return; |
| 648 | } |
| 649 | if (DEBUG_PAUSE) Slog.v(TAG, "Start pausing: " + prev); |
| 650 | mResumedActivity = null; |
| 651 | mPausingActivity = prev; |
| 652 | mLastPausedActivity = prev; |
| 653 | prev.state = ActivityState.PAUSING; |
| 654 | prev.task.touchActiveTime(); |
| 655 | |
| 656 | mService.updateCpuStats(); |
| 657 | |
| 658 | if (prev.app != null && prev.app.thread != null) { |
| 659 | if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending pause: " + prev); |
| 660 | try { |
| 661 | EventLog.writeEvent(EventLogTags.AM_PAUSE_ACTIVITY, |
| 662 | System.identityHashCode(prev), |
| 663 | prev.shortComponentName); |
| 664 | prev.app.thread.schedulePauseActivity(prev, prev.finishing, userLeaving, |
| 665 | prev.configChangeFlags); |
| 666 | if (mMainStack) { |
| 667 | mService.updateUsageStats(prev, false); |
| 668 | } |
| 669 | } catch (Exception e) { |
| 670 | // Ignore exception, if process died other code will cleanup. |
| 671 | Slog.w(TAG, "Exception thrown during pause", e); |
| 672 | mPausingActivity = null; |
| 673 | mLastPausedActivity = null; |
| 674 | } |
| 675 | } else { |
| 676 | mPausingActivity = null; |
| 677 | mLastPausedActivity = null; |
| 678 | } |
| 679 | |
| 680 | // If we are not going to sleep, we want to ensure the device is |
| 681 | // awake until the next activity is started. |
| 682 | if (!mService.mSleeping && !mService.mShuttingDown) { |
| 683 | mLaunchingActivity.acquire(); |
| 684 | if (!mHandler.hasMessages(LAUNCH_TIMEOUT_MSG)) { |
| 685 | // To be safe, don't allow the wake lock to be held for too long. |
| 686 | Message msg = mHandler.obtainMessage(LAUNCH_TIMEOUT_MSG); |
| 687 | mHandler.sendMessageDelayed(msg, LAUNCH_TIMEOUT); |
| 688 | } |
| 689 | } |
| 690 | |
| 691 | |
| 692 | if (mPausingActivity != null) { |
| 693 | // Have the window manager pause its key dispatching until the new |
| 694 | // activity has started. If we're pausing the activity just because |
| 695 | // the screen is being turned off and the UI is sleeping, don't interrupt |
| 696 | // key dispatch; the same activity will pick it up again on wakeup. |
| 697 | if (!uiSleeping) { |
| 698 | prev.pauseKeyDispatchingLocked(); |
| 699 | } else { |
| 700 | if (DEBUG_PAUSE) Slog.v(TAG, "Key dispatch not paused for screen off"); |
| 701 | } |
| 702 | |
| 703 | // Schedule a pause timeout in case the app doesn't respond. |
| 704 | // We don't give it much time because this directly impacts the |
| 705 | // responsiveness seen by the user. |
| 706 | Message msg = mHandler.obtainMessage(PAUSE_TIMEOUT_MSG); |
| 707 | msg.obj = prev; |
| 708 | mHandler.sendMessageDelayed(msg, PAUSE_TIMEOUT); |
| 709 | if (DEBUG_PAUSE) Slog.v(TAG, "Waiting for pause to complete..."); |
| 710 | } else { |
| 711 | // This activity failed to schedule the |
| 712 | // pause, so just treat it as being paused now. |
| 713 | if (DEBUG_PAUSE) Slog.v(TAG, "Activity not running, resuming next."); |
| 714 | resumeTopActivityLocked(null); |
| 715 | } |
| 716 | } |
| 717 | |
| 718 | final void activityPaused(IBinder token, Bundle icicle, boolean timeout) { |
| 719 | if (DEBUG_PAUSE) Slog.v( |
| 720 | TAG, "Activity paused: token=" + token + ", icicle=" + icicle |
| 721 | + ", timeout=" + timeout); |
| 722 | |
| 723 | ActivityRecord r = null; |
| 724 | |
| 725 | synchronized (mService) { |
| 726 | int index = indexOfTokenLocked(token); |
| 727 | if (index >= 0) { |
| 728 | r = (ActivityRecord)mHistory.get(index); |
| 729 | if (!timeout) { |
| 730 | r.icicle = icicle; |
| 731 | r.haveState = true; |
| 732 | } |
| 733 | mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); |
| 734 | if (mPausingActivity == r) { |
| 735 | r.state = ActivityState.PAUSED; |
| 736 | completePauseLocked(); |
| 737 | } else { |
| 738 | EventLog.writeEvent(EventLogTags.AM_FAILED_TO_PAUSE, |
| 739 | System.identityHashCode(r), r.shortComponentName, |
| 740 | mPausingActivity != null |
| 741 | ? mPausingActivity.shortComponentName : "(none)"); |
| 742 | } |
| 743 | } |
| 744 | } |
| 745 | } |
| 746 | |
| 747 | private final void completePauseLocked() { |
| 748 | ActivityRecord prev = mPausingActivity; |
| 749 | if (DEBUG_PAUSE) Slog.v(TAG, "Complete pause: " + prev); |
| 750 | |
| 751 | if (prev != null) { |
| 752 | if (prev.finishing) { |
| 753 | if (DEBUG_PAUSE) Slog.v(TAG, "Executing finish of activity: " + prev); |
| 754 | prev = finishCurrentActivityLocked(prev, FINISH_AFTER_VISIBLE); |
| 755 | } else if (prev.app != null) { |
| 756 | if (DEBUG_PAUSE) Slog.v(TAG, "Enqueueing pending stop: " + prev); |
| 757 | if (prev.waitingVisible) { |
| 758 | prev.waitingVisible = false; |
| 759 | mWaitingVisibleActivities.remove(prev); |
| 760 | if (DEBUG_SWITCH || DEBUG_PAUSE) Slog.v( |
| 761 | TAG, "Complete pause, no longer waiting: " + prev); |
| 762 | } |
| 763 | if (prev.configDestroy) { |
| 764 | // The previous is being paused because the configuration |
| 765 | // is changing, which means it is actually stopping... |
| 766 | // To juggle the fact that we are also starting a new |
| 767 | // instance right now, we need to first completely stop |
| 768 | // the current instance before starting the new one. |
| 769 | if (DEBUG_PAUSE) Slog.v(TAG, "Destroying after pause: " + prev); |
| 770 | destroyActivityLocked(prev, true); |
| 771 | } else { |
| 772 | mStoppingActivities.add(prev); |
| 773 | if (mStoppingActivities.size() > 3) { |
| 774 | // If we already have a few activities waiting to stop, |
| 775 | // then give up on things going idle and start clearing |
| 776 | // them out. |
| 777 | if (DEBUG_PAUSE) Slog.v(TAG, "To many pending stops, forcing idle"); |
| 778 | Message msg = Message.obtain(); |
| 779 | msg.what = IDLE_NOW_MSG; |
| 780 | mHandler.sendMessage(msg); |
| 781 | } |
| 782 | } |
| 783 | } else { |
| 784 | if (DEBUG_PAUSE) Slog.v(TAG, "App died during pause, not stopping: " + prev); |
| 785 | prev = null; |
| 786 | } |
| 787 | mPausingActivity = null; |
| 788 | } |
| 789 | |
| 790 | if (!mService.mSleeping && !mService.mShuttingDown) { |
| 791 | resumeTopActivityLocked(prev); |
| 792 | } else { |
| 793 | if (mGoingToSleep.isHeld()) { |
| 794 | mGoingToSleep.release(); |
| 795 | } |
| 796 | if (mService.mShuttingDown) { |
| 797 | mService.notifyAll(); |
| 798 | } |
| 799 | } |
| 800 | |
| 801 | if (prev != null) { |
| 802 | prev.resumeKeyDispatchingLocked(); |
| 803 | } |
| 804 | |
| 805 | if (prev.app != null && prev.cpuTimeAtResume > 0 |
| 806 | && mService.mBatteryStatsService.isOnBattery()) { |
| 807 | long diff = 0; |
| 808 | synchronized (mService.mProcessStatsThread) { |
| 809 | diff = mService.mProcessStats.getCpuTimeForPid(prev.app.pid) |
| 810 | - prev.cpuTimeAtResume; |
| 811 | } |
| 812 | if (diff > 0) { |
| 813 | BatteryStatsImpl bsi = mService.mBatteryStatsService.getActiveStatistics(); |
| 814 | synchronized (bsi) { |
| 815 | BatteryStatsImpl.Uid.Proc ps = |
| 816 | bsi.getProcessStatsLocked(prev.info.applicationInfo.uid, |
| 817 | prev.info.packageName); |
| 818 | if (ps != null) { |
| 819 | ps.addForegroundTimeLocked(diff); |
| 820 | } |
| 821 | } |
| 822 | } |
| 823 | } |
| 824 | prev.cpuTimeAtResume = 0; // reset it |
| 825 | } |
| 826 | |
| 827 | /** |
| 828 | * Once we know that we have asked an application to put an activity in |
| 829 | * the resumed state (either by launching it or explicitly telling it), |
| 830 | * this function updates the rest of our state to match that fact. |
| 831 | */ |
| 832 | private final void completeResumeLocked(ActivityRecord next) { |
| 833 | next.idle = false; |
| 834 | next.results = null; |
| 835 | next.newIntents = null; |
| 836 | |
| 837 | // schedule an idle timeout in case the app doesn't do it for us. |
| 838 | Message msg = mHandler.obtainMessage(IDLE_TIMEOUT_MSG); |
| 839 | msg.obj = next; |
| 840 | mHandler.sendMessageDelayed(msg, IDLE_TIMEOUT); |
| 841 | |
| 842 | if (false) { |
| 843 | // The activity was never told to pause, so just keep |
| 844 | // things going as-is. To maintain our own state, |
| 845 | // we need to emulate it coming back and saying it is |
| 846 | // idle. |
| 847 | msg = mHandler.obtainMessage(IDLE_NOW_MSG); |
| 848 | msg.obj = next; |
| 849 | mHandler.sendMessage(msg); |
| 850 | } |
| 851 | |
| 852 | if (mMainStack) { |
| 853 | mService.reportResumedActivityLocked(next); |
| 854 | } |
| 855 | |
| 856 | next.thumbnail = null; |
| 857 | if (mMainStack) { |
| 858 | mService.setFocusedActivityLocked(next); |
| 859 | } |
| 860 | next.resumeKeyDispatchingLocked(); |
| 861 | ensureActivitiesVisibleLocked(null, 0); |
| 862 | mService.mWindowManager.executeAppTransition(); |
| 863 | mNoAnimActivities.clear(); |
| 864 | |
| 865 | // Mark the point when the activity is resuming |
| 866 | // TODO: To be more accurate, the mark should be before the onCreate, |
| 867 | // not after the onResume. But for subsequent starts, onResume is fine. |
| 868 | if (next.app != null) { |
| 869 | synchronized (mService.mProcessStatsThread) { |
| 870 | next.cpuTimeAtResume = mService.mProcessStats.getCpuTimeForPid(next.app.pid); |
| 871 | } |
| 872 | } else { |
| 873 | next.cpuTimeAtResume = 0; // Couldn't get the cpu time of process |
| 874 | } |
| 875 | } |
| 876 | |
| 877 | /** |
| 878 | * Make sure that all activities that need to be visible (that is, they |
| 879 | * currently can be seen by the user) actually are. |
| 880 | */ |
| 881 | final void ensureActivitiesVisibleLocked(ActivityRecord top, |
| 882 | ActivityRecord starting, String onlyThisProcess, int configChanges) { |
| 883 | if (DEBUG_VISBILITY) Slog.v( |
| 884 | TAG, "ensureActivitiesVisible behind " + top |
| 885 | + " configChanges=0x" + Integer.toHexString(configChanges)); |
| 886 | |
| 887 | // If the top activity is not fullscreen, then we need to |
| 888 | // make sure any activities under it are now visible. |
| 889 | final int count = mHistory.size(); |
| 890 | int i = count-1; |
| 891 | while (mHistory.get(i) != top) { |
| 892 | i--; |
| 893 | } |
| 894 | ActivityRecord r; |
| 895 | boolean behindFullscreen = false; |
| 896 | for (; i>=0; i--) { |
| 897 | r = (ActivityRecord)mHistory.get(i); |
| 898 | if (DEBUG_VISBILITY) Slog.v( |
| 899 | TAG, "Make visible? " + r + " finishing=" + r.finishing |
| 900 | + " state=" + r.state); |
| 901 | if (r.finishing) { |
| 902 | continue; |
| 903 | } |
| 904 | |
| 905 | final boolean doThisProcess = onlyThisProcess == null |
| 906 | || onlyThisProcess.equals(r.processName); |
| 907 | |
| 908 | // First: if this is not the current activity being started, make |
| 909 | // sure it matches the current configuration. |
| 910 | if (r != starting && doThisProcess) { |
| 911 | ensureActivityConfigurationLocked(r, 0); |
| 912 | } |
| 913 | |
| 914 | if (r.app == null || r.app.thread == null) { |
| 915 | if (onlyThisProcess == null |
| 916 | || onlyThisProcess.equals(r.processName)) { |
| 917 | // This activity needs to be visible, but isn't even |
| 918 | // running... get it started, but don't resume it |
| 919 | // at this point. |
| 920 | if (DEBUG_VISBILITY) Slog.v( |
| 921 | TAG, "Start and freeze screen for " + r); |
| 922 | if (r != starting) { |
| 923 | r.startFreezingScreenLocked(r.app, configChanges); |
| 924 | } |
| 925 | if (!r.visible) { |
| 926 | if (DEBUG_VISBILITY) Slog.v( |
| 927 | TAG, "Starting and making visible: " + r); |
| 928 | mService.mWindowManager.setAppVisibility(r, true); |
| 929 | } |
| 930 | if (r != starting) { |
| 931 | startSpecificActivityLocked(r, false, false); |
| 932 | } |
| 933 | } |
| 934 | |
| 935 | } else if (r.visible) { |
| 936 | // If this activity is already visible, then there is nothing |
| 937 | // else to do here. |
| 938 | if (DEBUG_VISBILITY) Slog.v( |
| 939 | TAG, "Skipping: already visible at " + r); |
| 940 | r.stopFreezingScreenLocked(false); |
| 941 | |
| 942 | } else if (onlyThisProcess == null) { |
| 943 | // This activity is not currently visible, but is running. |
| 944 | // Tell it to become visible. |
| 945 | r.visible = true; |
| 946 | if (r.state != ActivityState.RESUMED && r != starting) { |
| 947 | // If this activity is paused, tell it |
| 948 | // to now show its window. |
| 949 | if (DEBUG_VISBILITY) Slog.v( |
| 950 | TAG, "Making visible and scheduling visibility: " + r); |
| 951 | try { |
| 952 | mService.mWindowManager.setAppVisibility(r, true); |
| 953 | r.app.thread.scheduleWindowVisibility(r, true); |
| 954 | r.stopFreezingScreenLocked(false); |
| 955 | } catch (Exception e) { |
| 956 | // Just skip on any failure; we'll make it |
| 957 | // visible when it next restarts. |
| 958 | Slog.w(TAG, "Exception thrown making visibile: " |
| 959 | + r.intent.getComponent(), e); |
| 960 | } |
| 961 | } |
| 962 | } |
| 963 | |
| 964 | // Aggregate current change flags. |
| 965 | configChanges |= r.configChangeFlags; |
| 966 | |
| 967 | if (r.fullscreen) { |
| 968 | // At this point, nothing else needs to be shown |
| 969 | if (DEBUG_VISBILITY) Slog.v( |
| 970 | TAG, "Stopping: fullscreen at " + r); |
| 971 | behindFullscreen = true; |
| 972 | i--; |
| 973 | break; |
| 974 | } |
| 975 | } |
| 976 | |
| 977 | // Now for any activities that aren't visible to the user, make |
| 978 | // sure they no longer are keeping the screen frozen. |
| 979 | while (i >= 0) { |
| 980 | r = (ActivityRecord)mHistory.get(i); |
| 981 | if (DEBUG_VISBILITY) Slog.v( |
| 982 | TAG, "Make invisible? " + r + " finishing=" + r.finishing |
| 983 | + " state=" + r.state |
| 984 | + " behindFullscreen=" + behindFullscreen); |
| 985 | if (!r.finishing) { |
| 986 | if (behindFullscreen) { |
| 987 | if (r.visible) { |
| 988 | if (DEBUG_VISBILITY) Slog.v( |
| 989 | TAG, "Making invisible: " + r); |
| 990 | r.visible = false; |
| 991 | try { |
| 992 | mService.mWindowManager.setAppVisibility(r, false); |
| 993 | if ((r.state == ActivityState.STOPPING |
| 994 | || r.state == ActivityState.STOPPED) |
| 995 | && r.app != null && r.app.thread != null) { |
| 996 | if (DEBUG_VISBILITY) Slog.v( |
| 997 | TAG, "Scheduling invisibility: " + r); |
| 998 | r.app.thread.scheduleWindowVisibility(r, false); |
| 999 | } |
| 1000 | } catch (Exception e) { |
| 1001 | // Just skip on any failure; we'll make it |
| 1002 | // visible when it next restarts. |
| 1003 | Slog.w(TAG, "Exception thrown making hidden: " |
| 1004 | + r.intent.getComponent(), e); |
| 1005 | } |
| 1006 | } else { |
| 1007 | if (DEBUG_VISBILITY) Slog.v( |
| 1008 | TAG, "Already invisible: " + r); |
| 1009 | } |
| 1010 | } else if (r.fullscreen) { |
| 1011 | if (DEBUG_VISBILITY) Slog.v( |
| 1012 | TAG, "Now behindFullscreen: " + r); |
| 1013 | behindFullscreen = true; |
| 1014 | } |
| 1015 | } |
| 1016 | i--; |
| 1017 | } |
| 1018 | } |
| 1019 | |
| 1020 | /** |
| 1021 | * Version of ensureActivitiesVisible that can easily be called anywhere. |
| 1022 | */ |
| 1023 | final void ensureActivitiesVisibleLocked(ActivityRecord starting, |
| 1024 | int configChanges) { |
| 1025 | ActivityRecord r = topRunningActivityLocked(null); |
| 1026 | if (r != null) { |
| 1027 | ensureActivitiesVisibleLocked(r, starting, null, configChanges); |
| 1028 | } |
| 1029 | } |
| 1030 | |
| 1031 | /** |
| 1032 | * Ensure that the top activity in the stack is resumed. |
| 1033 | * |
| 1034 | * @param prev The previously resumed activity, for when in the process |
| 1035 | * of pausing; can be null to call from elsewhere. |
| 1036 | * |
| 1037 | * @return Returns true if something is being resumed, or false if |
| 1038 | * nothing happened. |
| 1039 | */ |
| 1040 | final boolean resumeTopActivityLocked(ActivityRecord prev) { |
| 1041 | // Find the first activity that is not finishing. |
| 1042 | ActivityRecord next = topRunningActivityLocked(null); |
| 1043 | |
| 1044 | // Remember how we'll process this pause/resume situation, and ensure |
| 1045 | // that the state is reset however we wind up proceeding. |
| 1046 | final boolean userLeaving = mUserLeaving; |
| 1047 | mUserLeaving = false; |
| 1048 | |
| 1049 | if (next == null) { |
| 1050 | // There are no more activities! Let's just start up the |
| 1051 | // Launcher... |
| 1052 | if (mMainStack) { |
| 1053 | return mService.startHomeActivityLocked(); |
| 1054 | } |
| 1055 | } |
| 1056 | |
| 1057 | next.delayedResume = false; |
| 1058 | |
| 1059 | // If the top activity is the resumed one, nothing to do. |
| 1060 | if (mResumedActivity == next && next.state == ActivityState.RESUMED) { |
| 1061 | // Make sure we have executed any pending transitions, since there |
| 1062 | // should be nothing left to do at this point. |
| 1063 | mService.mWindowManager.executeAppTransition(); |
| 1064 | mNoAnimActivities.clear(); |
| 1065 | return false; |
| 1066 | } |
| 1067 | |
| 1068 | // If we are sleeping, and there is no resumed activity, and the top |
| 1069 | // activity is paused, well that is the state we want. |
| 1070 | if ((mService.mSleeping || mService.mShuttingDown) |
| 1071 | && mLastPausedActivity == next && next.state == ActivityState.PAUSED) { |
| 1072 | // Make sure we have executed any pending transitions, since there |
| 1073 | // should be nothing left to do at this point. |
| 1074 | mService.mWindowManager.executeAppTransition(); |
| 1075 | mNoAnimActivities.clear(); |
| 1076 | return false; |
| 1077 | } |
| 1078 | |
| 1079 | // The activity may be waiting for stop, but that is no longer |
| 1080 | // appropriate for it. |
| 1081 | mStoppingActivities.remove(next); |
| 1082 | mWaitingVisibleActivities.remove(next); |
| 1083 | |
| 1084 | if (DEBUG_SWITCH) Slog.v(TAG, "Resuming " + next); |
| 1085 | |
| 1086 | // If we are currently pausing an activity, then don't do anything |
| 1087 | // until that is done. |
| 1088 | if (mPausingActivity != null) { |
| 1089 | if (DEBUG_SWITCH) Slog.v(TAG, "Skip resume: pausing=" + mPausingActivity); |
| 1090 | return false; |
| 1091 | } |
| 1092 | |
| 1093 | // We need to start pausing the current activity so the top one |
| 1094 | // can be resumed... |
| 1095 | if (mResumedActivity != null) { |
| 1096 | if (DEBUG_SWITCH) Slog.v(TAG, "Skip resume: need to start pausing"); |
| 1097 | startPausingLocked(userLeaving, false); |
| 1098 | return true; |
| 1099 | } |
| 1100 | |
| 1101 | if (prev != null && prev != next) { |
| 1102 | if (!prev.waitingVisible && next != null && !next.nowVisible) { |
| 1103 | prev.waitingVisible = true; |
| 1104 | mWaitingVisibleActivities.add(prev); |
| 1105 | if (DEBUG_SWITCH) Slog.v( |
| 1106 | TAG, "Resuming top, waiting visible to hide: " + prev); |
| 1107 | } else { |
| 1108 | // The next activity is already visible, so hide the previous |
| 1109 | // activity's windows right now so we can show the new one ASAP. |
| 1110 | // We only do this if the previous is finishing, which should mean |
| 1111 | // it is on top of the one being resumed so hiding it quickly |
| 1112 | // is good. Otherwise, we want to do the normal route of allowing |
| 1113 | // the resumed activity to be shown so we can decide if the |
| 1114 | // previous should actually be hidden depending on whether the |
| 1115 | // new one is found to be full-screen or not. |
| 1116 | if (prev.finishing) { |
| 1117 | mService.mWindowManager.setAppVisibility(prev, false); |
| 1118 | if (DEBUG_SWITCH) Slog.v(TAG, "Not waiting for visible to hide: " |
| 1119 | + prev + ", waitingVisible=" |
| 1120 | + (prev != null ? prev.waitingVisible : null) |
| 1121 | + ", nowVisible=" + next.nowVisible); |
| 1122 | } else { |
| 1123 | if (DEBUG_SWITCH) Slog.v(TAG, "Previous already visible but still waiting to hide: " |
| 1124 | + prev + ", waitingVisible=" |
| 1125 | + (prev != null ? prev.waitingVisible : null) |
| 1126 | + ", nowVisible=" + next.nowVisible); |
| 1127 | } |
| 1128 | } |
| 1129 | } |
| 1130 | |
| 1131 | // We are starting up the next activity, so tell the window manager |
| 1132 | // that the previous one will be hidden soon. This way it can know |
| 1133 | // to ignore it when computing the desired screen orientation. |
| 1134 | if (prev != null) { |
| 1135 | if (prev.finishing) { |
| 1136 | if (DEBUG_TRANSITION) Slog.v(TAG, |
| 1137 | "Prepare close transition: prev=" + prev); |
| 1138 | if (mNoAnimActivities.contains(prev)) { |
| 1139 | mService.mWindowManager.prepareAppTransition(WindowManagerPolicy.TRANSIT_NONE); |
| 1140 | } else { |
| 1141 | mService.mWindowManager.prepareAppTransition(prev.task == next.task |
| 1142 | ? WindowManagerPolicy.TRANSIT_ACTIVITY_CLOSE |
| 1143 | : WindowManagerPolicy.TRANSIT_TASK_CLOSE); |
| 1144 | } |
| 1145 | mService.mWindowManager.setAppWillBeHidden(prev); |
| 1146 | mService.mWindowManager.setAppVisibility(prev, false); |
| 1147 | } else { |
| 1148 | if (DEBUG_TRANSITION) Slog.v(TAG, |
| 1149 | "Prepare open transition: prev=" + prev); |
| 1150 | if (mNoAnimActivities.contains(next)) { |
| 1151 | mService.mWindowManager.prepareAppTransition(WindowManagerPolicy.TRANSIT_NONE); |
| 1152 | } else { |
| 1153 | mService.mWindowManager.prepareAppTransition(prev.task == next.task |
| 1154 | ? WindowManagerPolicy.TRANSIT_ACTIVITY_OPEN |
| 1155 | : WindowManagerPolicy.TRANSIT_TASK_OPEN); |
| 1156 | } |
| 1157 | } |
| 1158 | if (false) { |
| 1159 | mService.mWindowManager.setAppWillBeHidden(prev); |
| 1160 | mService.mWindowManager.setAppVisibility(prev, false); |
| 1161 | } |
| 1162 | } else if (mHistory.size() > 1) { |
| 1163 | if (DEBUG_TRANSITION) Slog.v(TAG, |
| 1164 | "Prepare open transition: no previous"); |
| 1165 | if (mNoAnimActivities.contains(next)) { |
| 1166 | mService.mWindowManager.prepareAppTransition(WindowManagerPolicy.TRANSIT_NONE); |
| 1167 | } else { |
| 1168 | mService.mWindowManager.prepareAppTransition(WindowManagerPolicy.TRANSIT_ACTIVITY_OPEN); |
| 1169 | } |
| 1170 | } |
| 1171 | |
| 1172 | if (next.app != null && next.app.thread != null) { |
| 1173 | if (DEBUG_SWITCH) Slog.v(TAG, "Resume running: " + next); |
| 1174 | |
| 1175 | // This activity is now becoming visible. |
| 1176 | mService.mWindowManager.setAppVisibility(next, true); |
| 1177 | |
| 1178 | ActivityRecord lastResumedActivity = mResumedActivity; |
| 1179 | ActivityState lastState = next.state; |
| 1180 | |
| 1181 | mService.updateCpuStats(); |
| 1182 | |
| 1183 | next.state = ActivityState.RESUMED; |
| 1184 | mResumedActivity = next; |
| 1185 | next.task.touchActiveTime(); |
| 1186 | mService.updateLruProcessLocked(next.app, true, true); |
| 1187 | updateLRUListLocked(next); |
| 1188 | |
| 1189 | // Have the window manager re-evaluate the orientation of |
| 1190 | // the screen based on the new activity order. |
| 1191 | boolean updated = false; |
| 1192 | if (mMainStack) { |
| 1193 | synchronized (mService) { |
| 1194 | Configuration config = mService.mWindowManager.updateOrientationFromAppTokens( |
| 1195 | mService.mConfiguration, |
| 1196 | next.mayFreezeScreenLocked(next.app) ? next : null); |
| 1197 | if (config != null) { |
| 1198 | next.frozenBeforeDestroy = true; |
| 1199 | } |
| 1200 | updated = mService.updateConfigurationLocked(config, next); |
| 1201 | } |
| 1202 | } |
| 1203 | if (!updated) { |
| 1204 | // The configuration update wasn't able to keep the existing |
| 1205 | // instance of the activity, and instead started a new one. |
| 1206 | // We should be all done, but let's just make sure our activity |
| 1207 | // is still at the top and schedule another run if something |
| 1208 | // weird happened. |
| 1209 | ActivityRecord nextNext = topRunningActivityLocked(null); |
| 1210 | if (DEBUG_SWITCH) Slog.i(TAG, |
| 1211 | "Activity config changed during resume: " + next |
| 1212 | + ", new next: " + nextNext); |
| 1213 | if (nextNext != next) { |
| 1214 | // Do over! |
| 1215 | mHandler.sendEmptyMessage(RESUME_TOP_ACTIVITY_MSG); |
| 1216 | } |
| 1217 | if (mMainStack) { |
| 1218 | mService.setFocusedActivityLocked(next); |
| 1219 | } |
| 1220 | ensureActivitiesVisibleLocked(null, 0); |
| 1221 | mService.mWindowManager.executeAppTransition(); |
| 1222 | mNoAnimActivities.clear(); |
| 1223 | return true; |
| 1224 | } |
| 1225 | |
| 1226 | try { |
| 1227 | // Deliver all pending results. |
| 1228 | ArrayList a = next.results; |
| 1229 | if (a != null) { |
| 1230 | final int N = a.size(); |
| 1231 | if (!next.finishing && N > 0) { |
| 1232 | if (DEBUG_RESULTS) Slog.v( |
| 1233 | TAG, "Delivering results to " + next |
| 1234 | + ": " + a); |
| 1235 | next.app.thread.scheduleSendResult(next, a); |
| 1236 | } |
| 1237 | } |
| 1238 | |
| 1239 | if (next.newIntents != null) { |
| 1240 | next.app.thread.scheduleNewIntent(next.newIntents, next); |
| 1241 | } |
| 1242 | |
| 1243 | EventLog.writeEvent(EventLogTags.AM_RESUME_ACTIVITY, |
| 1244 | System.identityHashCode(next), |
| 1245 | next.task.taskId, next.shortComponentName); |
| 1246 | |
| 1247 | next.app.thread.scheduleResumeActivity(next, |
| 1248 | mService.isNextTransitionForward()); |
| 1249 | |
| 1250 | pauseIfSleepingLocked(); |
| 1251 | |
| 1252 | } catch (Exception e) { |
| 1253 | // Whoops, need to restart this activity! |
| 1254 | next.state = lastState; |
| 1255 | mResumedActivity = lastResumedActivity; |
| 1256 | Slog.i(TAG, "Restarting because process died: " + next); |
| 1257 | if (!next.hasBeenLaunched) { |
| 1258 | next.hasBeenLaunched = true; |
| 1259 | } else { |
| 1260 | if (SHOW_APP_STARTING_PREVIEW && mMainStack) { |
| 1261 | mService.mWindowManager.setAppStartingWindow( |
| 1262 | next, next.packageName, next.theme, |
| 1263 | next.nonLocalizedLabel, |
| 1264 | next.labelRes, next.icon, null, true); |
| 1265 | } |
| 1266 | } |
| 1267 | startSpecificActivityLocked(next, true, false); |
| 1268 | return true; |
| 1269 | } |
| 1270 | |
| 1271 | // From this point on, if something goes wrong there is no way |
| 1272 | // to recover the activity. |
| 1273 | try { |
| 1274 | next.visible = true; |
| 1275 | completeResumeLocked(next); |
| 1276 | } catch (Exception e) { |
| 1277 | // If any exception gets thrown, toss away this |
| 1278 | // activity and try the next one. |
| 1279 | Slog.w(TAG, "Exception thrown during resume of " + next, e); |
| 1280 | requestFinishActivityLocked(next, Activity.RESULT_CANCELED, null, |
| 1281 | "resume-exception"); |
| 1282 | return true; |
| 1283 | } |
| 1284 | |
| 1285 | // Didn't need to use the icicle, and it is now out of date. |
| 1286 | next.icicle = null; |
| 1287 | next.haveState = false; |
| 1288 | next.stopped = false; |
| 1289 | |
| 1290 | } else { |
| 1291 | // Whoops, need to restart this activity! |
| 1292 | if (!next.hasBeenLaunched) { |
| 1293 | next.hasBeenLaunched = true; |
| 1294 | } else { |
| 1295 | if (SHOW_APP_STARTING_PREVIEW) { |
| 1296 | mService.mWindowManager.setAppStartingWindow( |
| 1297 | next, next.packageName, next.theme, |
| 1298 | next.nonLocalizedLabel, |
| 1299 | next.labelRes, next.icon, null, true); |
| 1300 | } |
| 1301 | if (DEBUG_SWITCH) Slog.v(TAG, "Restarting: " + next); |
| 1302 | } |
| 1303 | startSpecificActivityLocked(next, true, true); |
| 1304 | } |
| 1305 | |
| 1306 | return true; |
| 1307 | } |
| 1308 | |
| 1309 | private final void startActivityLocked(ActivityRecord r, boolean newTask, |
| 1310 | boolean doResume) { |
| 1311 | final int NH = mHistory.size(); |
| 1312 | |
| 1313 | int addPos = -1; |
| 1314 | |
| 1315 | if (!newTask) { |
| 1316 | // If starting in an existing task, find where that is... |
| 1317 | ActivityRecord next = null; |
| 1318 | boolean startIt = true; |
| 1319 | for (int i = NH-1; i >= 0; i--) { |
| 1320 | ActivityRecord p = (ActivityRecord)mHistory.get(i); |
| 1321 | if (p.finishing) { |
| 1322 | continue; |
| 1323 | } |
| 1324 | if (p.task == r.task) { |
| 1325 | // Here it is! Now, if this is not yet visible to the |
| 1326 | // user, then just add it without starting; it will |
| 1327 | // get started when the user navigates back to it. |
| 1328 | addPos = i+1; |
| 1329 | if (!startIt) { |
| 1330 | mHistory.add(addPos, r); |
| 1331 | r.inHistory = true; |
| 1332 | r.task.numActivities++; |
| 1333 | mService.mWindowManager.addAppToken(addPos, r, r.task.taskId, |
| 1334 | r.info.screenOrientation, r.fullscreen); |
| 1335 | if (VALIDATE_TOKENS) { |
| 1336 | mService.mWindowManager.validateAppTokens(mHistory); |
| 1337 | } |
| 1338 | return; |
| 1339 | } |
| 1340 | break; |
| 1341 | } |
| 1342 | if (p.fullscreen) { |
| 1343 | startIt = false; |
| 1344 | } |
| 1345 | next = p; |
| 1346 | } |
| 1347 | } |
| 1348 | |
| 1349 | // Place a new activity at top of stack, so it is next to interact |
| 1350 | // with the user. |
| 1351 | if (addPos < 0) { |
| 1352 | addPos = mHistory.size(); |
| 1353 | } |
| 1354 | |
| 1355 | // If we are not placing the new activity frontmost, we do not want |
| 1356 | // to deliver the onUserLeaving callback to the actual frontmost |
| 1357 | // activity |
| 1358 | if (addPos < NH) { |
| 1359 | mUserLeaving = false; |
| 1360 | if (DEBUG_USER_LEAVING) Slog.v(TAG, "startActivity() behind front, mUserLeaving=false"); |
| 1361 | } |
| 1362 | |
| 1363 | // Slot the activity into the history stack and proceed |
| 1364 | mHistory.add(addPos, r); |
| 1365 | r.inHistory = true; |
| 1366 | r.frontOfTask = newTask; |
| 1367 | r.task.numActivities++; |
| 1368 | if (NH > 0) { |
| 1369 | // We want to show the starting preview window if we are |
| 1370 | // switching to a new task, or the next activity's process is |
| 1371 | // not currently running. |
| 1372 | boolean showStartingIcon = newTask; |
| 1373 | ProcessRecord proc = r.app; |
| 1374 | if (proc == null) { |
| 1375 | proc = mService.mProcessNames.get(r.processName, r.info.applicationInfo.uid); |
| 1376 | } |
| 1377 | if (proc == null || proc.thread == null) { |
| 1378 | showStartingIcon = true; |
| 1379 | } |
| 1380 | if (DEBUG_TRANSITION) Slog.v(TAG, |
| 1381 | "Prepare open transition: starting " + r); |
| 1382 | if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { |
| 1383 | mService.mWindowManager.prepareAppTransition(WindowManagerPolicy.TRANSIT_NONE); |
| 1384 | mNoAnimActivities.add(r); |
| 1385 | } else if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { |
| 1386 | mService.mWindowManager.prepareAppTransition( |
| 1387 | WindowManagerPolicy.TRANSIT_TASK_OPEN); |
| 1388 | mNoAnimActivities.remove(r); |
| 1389 | } else { |
| 1390 | mService.mWindowManager.prepareAppTransition(newTask |
| 1391 | ? WindowManagerPolicy.TRANSIT_TASK_OPEN |
| 1392 | : WindowManagerPolicy.TRANSIT_ACTIVITY_OPEN); |
| 1393 | mNoAnimActivities.remove(r); |
| 1394 | } |
| 1395 | mService.mWindowManager.addAppToken( |
| 1396 | addPos, r, r.task.taskId, r.info.screenOrientation, r.fullscreen); |
| 1397 | boolean doShow = true; |
| 1398 | if (newTask) { |
| 1399 | // Even though this activity is starting fresh, we still need |
| 1400 | // to reset it to make sure we apply affinities to move any |
| 1401 | // existing activities from other tasks in to it. |
| 1402 | // If the caller has requested that the target task be |
| 1403 | // reset, then do so. |
| 1404 | if ((r.intent.getFlags() |
| 1405 | &Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { |
| 1406 | resetTaskIfNeededLocked(r, r); |
| 1407 | doShow = topRunningNonDelayedActivityLocked(null) == r; |
| 1408 | } |
| 1409 | } |
| 1410 | if (SHOW_APP_STARTING_PREVIEW && doShow) { |
| 1411 | // Figure out if we are transitioning from another activity that is |
| 1412 | // "has the same starting icon" as the next one. This allows the |
| 1413 | // window manager to keep the previous window it had previously |
| 1414 | // created, if it still had one. |
| 1415 | ActivityRecord prev = mResumedActivity; |
| 1416 | if (prev != null) { |
| 1417 | // We don't want to reuse the previous starting preview if: |
| 1418 | // (1) The current activity is in a different task. |
| 1419 | if (prev.task != r.task) prev = null; |
| 1420 | // (2) The current activity is already displayed. |
| 1421 | else if (prev.nowVisible) prev = null; |
| 1422 | } |
| 1423 | mService.mWindowManager.setAppStartingWindow( |
| 1424 | r, r.packageName, r.theme, r.nonLocalizedLabel, |
| 1425 | r.labelRes, r.icon, prev, showStartingIcon); |
| 1426 | } |
| 1427 | } else { |
| 1428 | // If this is the first activity, don't do any fancy animations, |
| 1429 | // because there is nothing for it to animate on top of. |
| 1430 | mService.mWindowManager.addAppToken(addPos, r, r.task.taskId, |
| 1431 | r.info.screenOrientation, r.fullscreen); |
| 1432 | } |
| 1433 | if (VALIDATE_TOKENS) { |
| 1434 | mService.mWindowManager.validateAppTokens(mHistory); |
| 1435 | } |
| 1436 | |
| 1437 | if (doResume) { |
| 1438 | resumeTopActivityLocked(null); |
| 1439 | } |
| 1440 | } |
| 1441 | |
| 1442 | /** |
| 1443 | * Perform a reset of the given task, if needed as part of launching it. |
| 1444 | * Returns the new HistoryRecord at the top of the task. |
| 1445 | */ |
| 1446 | private final ActivityRecord resetTaskIfNeededLocked(ActivityRecord taskTop, |
| 1447 | ActivityRecord newActivity) { |
| 1448 | boolean forceReset = (newActivity.info.flags |
| 1449 | &ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0; |
| 1450 | if (taskTop.task.getInactiveDuration() > ACTIVITY_INACTIVE_RESET_TIME) { |
| 1451 | if ((newActivity.info.flags |
| 1452 | &ActivityInfo.FLAG_ALWAYS_RETAIN_TASK_STATE) == 0) { |
| 1453 | forceReset = true; |
| 1454 | } |
| 1455 | } |
| 1456 | |
| 1457 | final TaskRecord task = taskTop.task; |
| 1458 | |
| 1459 | // We are going to move through the history list so that we can look |
| 1460 | // at each activity 'target' with 'below' either the interesting |
| 1461 | // activity immediately below it in the stack or null. |
| 1462 | ActivityRecord target = null; |
| 1463 | int targetI = 0; |
| 1464 | int taskTopI = -1; |
| 1465 | int replyChainEnd = -1; |
| 1466 | int lastReparentPos = -1; |
| 1467 | for (int i=mHistory.size()-1; i>=-1; i--) { |
| 1468 | ActivityRecord below = i >= 0 ? (ActivityRecord)mHistory.get(i) : null; |
| 1469 | |
| 1470 | if (below != null && below.finishing) { |
| 1471 | continue; |
| 1472 | } |
| 1473 | if (target == null) { |
| 1474 | target = below; |
| 1475 | targetI = i; |
| 1476 | // If we were in the middle of a reply chain before this |
| 1477 | // task, it doesn't appear like the root of the chain wants |
| 1478 | // anything interesting, so drop it. |
| 1479 | replyChainEnd = -1; |
| 1480 | continue; |
| 1481 | } |
| 1482 | |
| 1483 | final int flags = target.info.flags; |
| 1484 | |
| 1485 | final boolean finishOnTaskLaunch = |
| 1486 | (flags&ActivityInfo.FLAG_FINISH_ON_TASK_LAUNCH) != 0; |
| 1487 | final boolean allowTaskReparenting = |
| 1488 | (flags&ActivityInfo.FLAG_ALLOW_TASK_REPARENTING) != 0; |
| 1489 | |
| 1490 | if (target.task == task) { |
| 1491 | // We are inside of the task being reset... we'll either |
| 1492 | // finish this activity, push it out for another task, |
| 1493 | // or leave it as-is. We only do this |
| 1494 | // for activities that are not the root of the task (since |
| 1495 | // if we finish the root, we may no longer have the task!). |
| 1496 | if (taskTopI < 0) { |
| 1497 | taskTopI = targetI; |
| 1498 | } |
| 1499 | if (below != null && below.task == task) { |
| 1500 | final boolean clearWhenTaskReset = |
| 1501 | (target.intent.getFlags() |
| 1502 | &Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0; |
| 1503 | if (!finishOnTaskLaunch && !clearWhenTaskReset && target.resultTo != null) { |
| 1504 | // If this activity is sending a reply to a previous |
| 1505 | // activity, we can't do anything with it now until |
| 1506 | // we reach the start of the reply chain. |
| 1507 | // XXX note that we are assuming the result is always |
| 1508 | // to the previous activity, which is almost always |
| 1509 | // the case but we really shouldn't count on. |
| 1510 | if (replyChainEnd < 0) { |
| 1511 | replyChainEnd = targetI; |
| 1512 | } |
| 1513 | } else if (!finishOnTaskLaunch && !clearWhenTaskReset && allowTaskReparenting |
| 1514 | && target.taskAffinity != null |
| 1515 | && !target.taskAffinity.equals(task.affinity)) { |
| 1516 | // If this activity has an affinity for another |
| 1517 | // task, then we need to move it out of here. We will |
| 1518 | // move it as far out of the way as possible, to the |
| 1519 | // bottom of the activity stack. This also keeps it |
| 1520 | // correctly ordered with any activities we previously |
| 1521 | // moved. |
| 1522 | ActivityRecord p = (ActivityRecord)mHistory.get(0); |
| 1523 | if (target.taskAffinity != null |
| 1524 | && target.taskAffinity.equals(p.task.affinity)) { |
| 1525 | // If the activity currently at the bottom has the |
| 1526 | // same task affinity as the one we are moving, |
| 1527 | // then merge it into the same task. |
| 1528 | target.task = p.task; |
| 1529 | if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target |
| 1530 | + " out to bottom task " + p.task); |
| 1531 | } else { |
| 1532 | mService.mCurTask++; |
| 1533 | if (mService.mCurTask <= 0) { |
| 1534 | mService.mCurTask = 1; |
| 1535 | } |
| 1536 | target.task = new TaskRecord(mService.mCurTask, target.info, null, |
| 1537 | (target.info.flags&ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0); |
| 1538 | target.task.affinityIntent = target.intent; |
| 1539 | if (DEBUG_TASKS) Slog.v(TAG, "Start pushing activity " + target |
| 1540 | + " out to new task " + target.task); |
| 1541 | } |
| 1542 | mService.mWindowManager.setAppGroupId(target, task.taskId); |
| 1543 | if (replyChainEnd < 0) { |
| 1544 | replyChainEnd = targetI; |
| 1545 | } |
| 1546 | int dstPos = 0; |
| 1547 | for (int srcPos=targetI; srcPos<=replyChainEnd; srcPos++) { |
| 1548 | p = (ActivityRecord)mHistory.get(srcPos); |
| 1549 | if (p.finishing) { |
| 1550 | continue; |
| 1551 | } |
| 1552 | if (DEBUG_TASKS) Slog.v(TAG, "Pushing next activity " + p |
| 1553 | + " out to target's task " + target.task); |
| 1554 | task.numActivities--; |
| 1555 | p.task = target.task; |
| 1556 | target.task.numActivities++; |
| 1557 | mHistory.remove(srcPos); |
| 1558 | mHistory.add(dstPos, p); |
| 1559 | mService.mWindowManager.moveAppToken(dstPos, p); |
| 1560 | mService.mWindowManager.setAppGroupId(p, p.task.taskId); |
| 1561 | dstPos++; |
| 1562 | if (VALIDATE_TOKENS) { |
| 1563 | mService.mWindowManager.validateAppTokens(mHistory); |
| 1564 | } |
| 1565 | i++; |
| 1566 | } |
| 1567 | if (taskTop == p) { |
| 1568 | taskTop = below; |
| 1569 | } |
| 1570 | if (taskTopI == replyChainEnd) { |
| 1571 | taskTopI = -1; |
| 1572 | } |
| 1573 | replyChainEnd = -1; |
| 1574 | if (mMainStack) { |
| 1575 | mService.addRecentTaskLocked(target.task); |
| 1576 | } |
| 1577 | } else if (forceReset || finishOnTaskLaunch |
| 1578 | || clearWhenTaskReset) { |
| 1579 | // If the activity should just be removed -- either |
| 1580 | // because it asks for it, or the task should be |
| 1581 | // cleared -- then finish it and anything that is |
| 1582 | // part of its reply chain. |
| 1583 | if (clearWhenTaskReset) { |
| 1584 | // In this case, we want to finish this activity |
| 1585 | // and everything above it, so be sneaky and pretend |
| 1586 | // like these are all in the reply chain. |
| 1587 | replyChainEnd = targetI+1; |
| 1588 | while (replyChainEnd < mHistory.size() && |
| 1589 | ((ActivityRecord)mHistory.get( |
| 1590 | replyChainEnd)).task == task) { |
| 1591 | replyChainEnd++; |
| 1592 | } |
| 1593 | replyChainEnd--; |
| 1594 | } else if (replyChainEnd < 0) { |
| 1595 | replyChainEnd = targetI; |
| 1596 | } |
| 1597 | ActivityRecord p = null; |
| 1598 | for (int srcPos=targetI; srcPos<=replyChainEnd; srcPos++) { |
| 1599 | p = (ActivityRecord)mHistory.get(srcPos); |
| 1600 | if (p.finishing) { |
| 1601 | continue; |
| 1602 | } |
| 1603 | if (finishActivityLocked(p, srcPos, |
| 1604 | Activity.RESULT_CANCELED, null, "reset")) { |
| 1605 | replyChainEnd--; |
| 1606 | srcPos--; |
| 1607 | } |
| 1608 | } |
| 1609 | if (taskTop == p) { |
| 1610 | taskTop = below; |
| 1611 | } |
| 1612 | if (taskTopI == replyChainEnd) { |
| 1613 | taskTopI = -1; |
| 1614 | } |
| 1615 | replyChainEnd = -1; |
| 1616 | } else { |
| 1617 | // If we were in the middle of a chain, well the |
| 1618 | // activity that started it all doesn't want anything |
| 1619 | // special, so leave it all as-is. |
| 1620 | replyChainEnd = -1; |
| 1621 | } |
| 1622 | } else { |
| 1623 | // Reached the bottom of the task -- any reply chain |
| 1624 | // should be left as-is. |
| 1625 | replyChainEnd = -1; |
| 1626 | } |
| 1627 | |
| 1628 | } else if (target.resultTo != null) { |
| 1629 | // If this activity is sending a reply to a previous |
| 1630 | // activity, we can't do anything with it now until |
| 1631 | // we reach the start of the reply chain. |
| 1632 | // XXX note that we are assuming the result is always |
| 1633 | // to the previous activity, which is almost always |
| 1634 | // the case but we really shouldn't count on. |
| 1635 | if (replyChainEnd < 0) { |
| 1636 | replyChainEnd = targetI; |
| 1637 | } |
| 1638 | |
| 1639 | } else if (taskTopI >= 0 && allowTaskReparenting |
| 1640 | && task.affinity != null |
| 1641 | && task.affinity.equals(target.taskAffinity)) { |
| 1642 | // We are inside of another task... if this activity has |
| 1643 | // an affinity for our task, then either remove it if we are |
| 1644 | // clearing or move it over to our task. Note that |
| 1645 | // we currently punt on the case where we are resetting a |
| 1646 | // task that is not at the top but who has activities above |
| 1647 | // with an affinity to it... this is really not a normal |
| 1648 | // case, and we will need to later pull that task to the front |
| 1649 | // and usually at that point we will do the reset and pick |
| 1650 | // up those remaining activities. (This only happens if |
| 1651 | // someone starts an activity in a new task from an activity |
| 1652 | // in a task that is not currently on top.) |
| 1653 | if (forceReset || finishOnTaskLaunch) { |
| 1654 | if (replyChainEnd < 0) { |
| 1655 | replyChainEnd = targetI; |
| 1656 | } |
| 1657 | ActivityRecord p = null; |
| 1658 | for (int srcPos=targetI; srcPos<=replyChainEnd; srcPos++) { |
| 1659 | p = (ActivityRecord)mHistory.get(srcPos); |
| 1660 | if (p.finishing) { |
| 1661 | continue; |
| 1662 | } |
| 1663 | if (finishActivityLocked(p, srcPos, |
| 1664 | Activity.RESULT_CANCELED, null, "reset")) { |
| 1665 | taskTopI--; |
| 1666 | lastReparentPos--; |
| 1667 | replyChainEnd--; |
| 1668 | srcPos--; |
| 1669 | } |
| 1670 | } |
| 1671 | replyChainEnd = -1; |
| 1672 | } else { |
| 1673 | if (replyChainEnd < 0) { |
| 1674 | replyChainEnd = targetI; |
| 1675 | } |
| 1676 | for (int srcPos=replyChainEnd; srcPos>=targetI; srcPos--) { |
| 1677 | ActivityRecord p = (ActivityRecord)mHistory.get(srcPos); |
| 1678 | if (p.finishing) { |
| 1679 | continue; |
| 1680 | } |
| 1681 | if (lastReparentPos < 0) { |
| 1682 | lastReparentPos = taskTopI; |
| 1683 | taskTop = p; |
| 1684 | } else { |
| 1685 | lastReparentPos--; |
| 1686 | } |
| 1687 | mHistory.remove(srcPos); |
| 1688 | p.task.numActivities--; |
| 1689 | p.task = task; |
| 1690 | mHistory.add(lastReparentPos, p); |
| 1691 | if (DEBUG_TASKS) Slog.v(TAG, "Pulling activity " + p |
| 1692 | + " in to resetting task " + task); |
| 1693 | task.numActivities++; |
| 1694 | mService.mWindowManager.moveAppToken(lastReparentPos, p); |
| 1695 | mService.mWindowManager.setAppGroupId(p, p.task.taskId); |
| 1696 | if (VALIDATE_TOKENS) { |
| 1697 | mService.mWindowManager.validateAppTokens(mHistory); |
| 1698 | } |
| 1699 | } |
| 1700 | replyChainEnd = -1; |
| 1701 | |
| 1702 | // Now we've moved it in to place... but what if this is |
| 1703 | // a singleTop activity and we have put it on top of another |
| 1704 | // instance of the same activity? Then we drop the instance |
| 1705 | // below so it remains singleTop. |
| 1706 | if (target.info.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) { |
| 1707 | for (int j=lastReparentPos-1; j>=0; j--) { |
| 1708 | ActivityRecord p = (ActivityRecord)mHistory.get(j); |
| 1709 | if (p.finishing) { |
| 1710 | continue; |
| 1711 | } |
| 1712 | if (p.intent.getComponent().equals(target.intent.getComponent())) { |
| 1713 | if (finishActivityLocked(p, j, |
| 1714 | Activity.RESULT_CANCELED, null, "replace")) { |
| 1715 | taskTopI--; |
| 1716 | lastReparentPos--; |
| 1717 | } |
| 1718 | } |
| 1719 | } |
| 1720 | } |
| 1721 | } |
| 1722 | } |
| 1723 | |
| 1724 | target = below; |
| 1725 | targetI = i; |
| 1726 | } |
| 1727 | |
| 1728 | return taskTop; |
| 1729 | } |
| 1730 | |
| 1731 | /** |
| 1732 | * Perform clear operation as requested by |
| 1733 | * {@link Intent#FLAG_ACTIVITY_CLEAR_TOP}: search from the top of the |
| 1734 | * stack to the given task, then look for |
| 1735 | * an instance of that activity in the stack and, if found, finish all |
| 1736 | * activities on top of it and return the instance. |
| 1737 | * |
| 1738 | * @param newR Description of the new activity being started. |
| 1739 | * @return Returns the old activity that should be continue to be used, |
| 1740 | * or null if none was found. |
| 1741 | */ |
| 1742 | private final ActivityRecord performClearTaskLocked(int taskId, |
| 1743 | ActivityRecord newR, int launchFlags, boolean doClear) { |
| 1744 | int i = mHistory.size(); |
| 1745 | |
| 1746 | // First find the requested task. |
| 1747 | while (i > 0) { |
| 1748 | i--; |
| 1749 | ActivityRecord r = (ActivityRecord)mHistory.get(i); |
| 1750 | if (r.task.taskId == taskId) { |
| 1751 | i++; |
| 1752 | break; |
| 1753 | } |
| 1754 | } |
| 1755 | |
| 1756 | // Now clear it. |
| 1757 | while (i > 0) { |
| 1758 | i--; |
| 1759 | ActivityRecord r = (ActivityRecord)mHistory.get(i); |
| 1760 | if (r.finishing) { |
| 1761 | continue; |
| 1762 | } |
| 1763 | if (r.task.taskId != taskId) { |
| 1764 | return null; |
| 1765 | } |
| 1766 | if (r.realActivity.equals(newR.realActivity)) { |
| 1767 | // Here it is! Now finish everything in front... |
| 1768 | ActivityRecord ret = r; |
| 1769 | if (doClear) { |
| 1770 | while (i < (mHistory.size()-1)) { |
| 1771 | i++; |
| 1772 | r = (ActivityRecord)mHistory.get(i); |
| 1773 | if (r.finishing) { |
| 1774 | continue; |
| 1775 | } |
| 1776 | if (finishActivityLocked(r, i, Activity.RESULT_CANCELED, |
| 1777 | null, "clear")) { |
| 1778 | i--; |
| 1779 | } |
| 1780 | } |
| 1781 | } |
| 1782 | |
| 1783 | // Finally, if this is a normal launch mode (that is, not |
| 1784 | // expecting onNewIntent()), then we will finish the current |
| 1785 | // instance of the activity so a new fresh one can be started. |
| 1786 | if (ret.launchMode == ActivityInfo.LAUNCH_MULTIPLE |
| 1787 | && (launchFlags&Intent.FLAG_ACTIVITY_SINGLE_TOP) == 0) { |
| 1788 | if (!ret.finishing) { |
| 1789 | int index = indexOfTokenLocked(ret); |
| 1790 | if (index >= 0) { |
| 1791 | finishActivityLocked(ret, index, Activity.RESULT_CANCELED, |
| 1792 | null, "clear"); |
| 1793 | } |
| 1794 | return null; |
| 1795 | } |
| 1796 | } |
| 1797 | |
| 1798 | return ret; |
| 1799 | } |
| 1800 | } |
| 1801 | |
| 1802 | return null; |
| 1803 | } |
| 1804 | |
| 1805 | /** |
| 1806 | * Find the activity in the history stack within the given task. Returns |
| 1807 | * the index within the history at which it's found, or < 0 if not found. |
| 1808 | */ |
| 1809 | private final int findActivityInHistoryLocked(ActivityRecord r, int task) { |
| 1810 | int i = mHistory.size(); |
| 1811 | while (i > 0) { |
| 1812 | i--; |
| 1813 | ActivityRecord candidate = (ActivityRecord)mHistory.get(i); |
| 1814 | if (candidate.task.taskId != task) { |
| 1815 | break; |
| 1816 | } |
| 1817 | if (candidate.realActivity.equals(r.realActivity)) { |
| 1818 | return i; |
| 1819 | } |
| 1820 | } |
| 1821 | |
| 1822 | return -1; |
| 1823 | } |
| 1824 | |
| 1825 | /** |
| 1826 | * Reorder the history stack so that the activity at the given index is |
| 1827 | * brought to the front. |
| 1828 | */ |
| 1829 | private final ActivityRecord moveActivityToFrontLocked(int where) { |
| 1830 | ActivityRecord newTop = (ActivityRecord)mHistory.remove(where); |
| 1831 | int top = mHistory.size(); |
| 1832 | ActivityRecord oldTop = (ActivityRecord)mHistory.get(top-1); |
| 1833 | mHistory.add(top, newTop); |
| 1834 | oldTop.frontOfTask = false; |
| 1835 | newTop.frontOfTask = true; |
| 1836 | return newTop; |
| 1837 | } |
| 1838 | |
| 1839 | final int startActivityLocked(IApplicationThread caller, |
| 1840 | Intent intent, String resolvedType, |
| 1841 | Uri[] grantedUriPermissions, |
| 1842 | int grantedMode, ActivityInfo aInfo, IBinder resultTo, |
| 1843 | String resultWho, int requestCode, |
| 1844 | int callingPid, int callingUid, boolean onlyIfNeeded, |
| 1845 | boolean componentSpecified) { |
| 1846 | Slog.i(TAG, "Starting activity: " + intent); |
| 1847 | |
| 1848 | ActivityRecord sourceRecord = null; |
| 1849 | ActivityRecord resultRecord = null; |
| 1850 | if (resultTo != null) { |
| 1851 | int index = indexOfTokenLocked(resultTo); |
| 1852 | if (DEBUG_RESULTS) Slog.v( |
| 1853 | TAG, "Sending result to " + resultTo + " (index " + index + ")"); |
| 1854 | if (index >= 0) { |
| 1855 | sourceRecord = (ActivityRecord)mHistory.get(index); |
| 1856 | if (requestCode >= 0 && !sourceRecord.finishing) { |
| 1857 | resultRecord = sourceRecord; |
| 1858 | } |
| 1859 | } |
| 1860 | } |
| 1861 | |
| 1862 | int launchFlags = intent.getFlags(); |
| 1863 | |
| 1864 | if ((launchFlags&Intent.FLAG_ACTIVITY_FORWARD_RESULT) != 0 |
| 1865 | && sourceRecord != null) { |
| 1866 | // Transfer the result target from the source activity to the new |
| 1867 | // one being started, including any failures. |
| 1868 | if (requestCode >= 0) { |
| 1869 | return START_FORWARD_AND_REQUEST_CONFLICT; |
| 1870 | } |
| 1871 | resultRecord = sourceRecord.resultTo; |
| 1872 | resultWho = sourceRecord.resultWho; |
| 1873 | requestCode = sourceRecord.requestCode; |
| 1874 | sourceRecord.resultTo = null; |
| 1875 | if (resultRecord != null) { |
| 1876 | resultRecord.removeResultsLocked( |
| 1877 | sourceRecord, resultWho, requestCode); |
| 1878 | } |
| 1879 | } |
| 1880 | |
| 1881 | int err = START_SUCCESS; |
| 1882 | |
| 1883 | if (intent.getComponent() == null) { |
| 1884 | // We couldn't find a class that can handle the given Intent. |
| 1885 | // That's the end of that! |
| 1886 | err = START_INTENT_NOT_RESOLVED; |
| 1887 | } |
| 1888 | |
| 1889 | if (err == START_SUCCESS && aInfo == null) { |
| 1890 | // We couldn't find the specific class specified in the Intent. |
| 1891 | // Also the end of the line. |
| 1892 | err = START_CLASS_NOT_FOUND; |
| 1893 | } |
| 1894 | |
| 1895 | ProcessRecord callerApp = null; |
| 1896 | if (err == START_SUCCESS && caller != null) { |
| 1897 | callerApp = mService.getRecordForAppLocked(caller); |
| 1898 | if (callerApp != null) { |
| 1899 | callingPid = callerApp.pid; |
| 1900 | callingUid = callerApp.info.uid; |
| 1901 | } else { |
| 1902 | Slog.w(TAG, "Unable to find app for caller " + caller |
| 1903 | + " (pid=" + callingPid + ") when starting: " |
| 1904 | + intent.toString()); |
| 1905 | err = START_PERMISSION_DENIED; |
| 1906 | } |
| 1907 | } |
| 1908 | |
| 1909 | if (err != START_SUCCESS) { |
| 1910 | if (resultRecord != null) { |
| 1911 | sendActivityResultLocked(-1, |
| 1912 | resultRecord, resultWho, requestCode, |
| 1913 | Activity.RESULT_CANCELED, null); |
| 1914 | } |
| 1915 | return err; |
| 1916 | } |
| 1917 | |
| 1918 | final int perm = mService.checkComponentPermission(aInfo.permission, callingPid, |
| 1919 | callingUid, aInfo.exported ? -1 : aInfo.applicationInfo.uid); |
| 1920 | if (perm != PackageManager.PERMISSION_GRANTED) { |
| 1921 | if (resultRecord != null) { |
| 1922 | sendActivityResultLocked(-1, |
| 1923 | resultRecord, resultWho, requestCode, |
| 1924 | Activity.RESULT_CANCELED, null); |
| 1925 | } |
| 1926 | String msg = "Permission Denial: starting " + intent.toString() |
| 1927 | + " from " + callerApp + " (pid=" + callingPid |
| 1928 | + ", uid=" + callingUid + ")" |
| 1929 | + " requires " + aInfo.permission; |
| 1930 | Slog.w(TAG, msg); |
| 1931 | throw new SecurityException(msg); |
| 1932 | } |
| 1933 | |
| 1934 | if (mMainStack) { |
| 1935 | if (mService.mController != null) { |
| 1936 | boolean abort = false; |
| 1937 | try { |
| 1938 | // The Intent we give to the watcher has the extra data |
| 1939 | // stripped off, since it can contain private information. |
| 1940 | Intent watchIntent = intent.cloneFilter(); |
| 1941 | abort = !mService.mController.activityStarting(watchIntent, |
| 1942 | aInfo.applicationInfo.packageName); |
| 1943 | } catch (RemoteException e) { |
| 1944 | mService.mController = null; |
| 1945 | } |
| 1946 | |
| 1947 | if (abort) { |
| 1948 | if (resultRecord != null) { |
| 1949 | sendActivityResultLocked(-1, |
| 1950 | resultRecord, resultWho, requestCode, |
| 1951 | Activity.RESULT_CANCELED, null); |
| 1952 | } |
| 1953 | // We pretend to the caller that it was really started, but |
| 1954 | // they will just get a cancel result. |
| 1955 | return START_SUCCESS; |
| 1956 | } |
| 1957 | } |
| 1958 | } |
| 1959 | |
| 1960 | ActivityRecord r = new ActivityRecord(mService, this, callerApp, callingUid, |
| 1961 | intent, resolvedType, aInfo, mService.mConfiguration, |
| 1962 | resultRecord, resultWho, requestCode, componentSpecified); |
| 1963 | |
| 1964 | if (mMainStack) { |
| 1965 | if (mResumedActivity == null |
| 1966 | || mResumedActivity.info.applicationInfo.uid != callingUid) { |
| 1967 | if (!mService.checkAppSwitchAllowedLocked(callingPid, callingUid, "Activity start")) { |
| 1968 | PendingActivityLaunch pal = new PendingActivityLaunch(); |
| 1969 | pal.r = r; |
| 1970 | pal.sourceRecord = sourceRecord; |
| 1971 | pal.grantedUriPermissions = grantedUriPermissions; |
| 1972 | pal.grantedMode = grantedMode; |
| 1973 | pal.onlyIfNeeded = onlyIfNeeded; |
| 1974 | mService.mPendingActivityLaunches.add(pal); |
| 1975 | return START_SWITCHES_CANCELED; |
| 1976 | } |
| 1977 | } |
| 1978 | |
| 1979 | if (mService.mDidAppSwitch) { |
| 1980 | // This is the second allowed switch since we stopped switches, |
| 1981 | // so now just generally allow switches. Use case: user presses |
| 1982 | // home (switches disabled, switch to home, mDidAppSwitch now true); |
| 1983 | // user taps a home icon (coming from home so allowed, we hit here |
| 1984 | // and now allow anyone to switch again). |
| 1985 | mService.mAppSwitchesAllowedTime = 0; |
| 1986 | } else { |
| 1987 | mService.mDidAppSwitch = true; |
| 1988 | } |
| 1989 | |
| 1990 | mService.doPendingActivityLaunchesLocked(false); |
| 1991 | } |
| 1992 | |
| 1993 | return startActivityUncheckedLocked(r, sourceRecord, |
| 1994 | grantedUriPermissions, grantedMode, onlyIfNeeded, true); |
| 1995 | } |
| 1996 | |
| 1997 | final int startActivityUncheckedLocked(ActivityRecord r, |
| 1998 | ActivityRecord sourceRecord, Uri[] grantedUriPermissions, |
| 1999 | int grantedMode, boolean onlyIfNeeded, boolean doResume) { |
| 2000 | final Intent intent = r.intent; |
| 2001 | final int callingUid = r.launchedFromUid; |
| 2002 | |
| 2003 | int launchFlags = intent.getFlags(); |
| 2004 | |
| 2005 | // We'll invoke onUserLeaving before onPause only if the launching |
| 2006 | // activity did not explicitly state that this is an automated launch. |
| 2007 | mUserLeaving = (launchFlags&Intent.FLAG_ACTIVITY_NO_USER_ACTION) == 0; |
| 2008 | if (DEBUG_USER_LEAVING) Slog.v(TAG, |
| 2009 | "startActivity() => mUserLeaving=" + mUserLeaving); |
| 2010 | |
| 2011 | // If the caller has asked not to resume at this point, we make note |
| 2012 | // of this in the record so that we can skip it when trying to find |
| 2013 | // the top running activity. |
| 2014 | if (!doResume) { |
| 2015 | r.delayedResume = true; |
| 2016 | } |
| 2017 | |
| 2018 | ActivityRecord notTop = (launchFlags&Intent.FLAG_ACTIVITY_PREVIOUS_IS_TOP) |
| 2019 | != 0 ? r : null; |
| 2020 | |
| 2021 | // If the onlyIfNeeded flag is set, then we can do this if the activity |
| 2022 | // being launched is the same as the one making the call... or, as |
| 2023 | // a special case, if we do not know the caller then we count the |
| 2024 | // current top activity as the caller. |
| 2025 | if (onlyIfNeeded) { |
| 2026 | ActivityRecord checkedCaller = sourceRecord; |
| 2027 | if (checkedCaller == null) { |
| 2028 | checkedCaller = topRunningNonDelayedActivityLocked(notTop); |
| 2029 | } |
| 2030 | if (!checkedCaller.realActivity.equals(r.realActivity)) { |
| 2031 | // Caller is not the same as launcher, so always needed. |
| 2032 | onlyIfNeeded = false; |
| 2033 | } |
| 2034 | } |
| 2035 | |
Dianne Hackborn | 50dc3bc | 2010-06-25 10:05:59 -0700 | [diff] [blame] | 2036 | if (sourceRecord == null) { |
| 2037 | // This activity is not being started from another... in this |
| 2038 | // case we -always- start a new task. |
| 2039 | if ((launchFlags&Intent.FLAG_ACTIVITY_NEW_TASK) == 0) { |
| 2040 | Slog.w(TAG, "startActivity called from non-Activity context; forcing Intent.FLAG_ACTIVITY_NEW_TASK for: " |
| 2041 | + intent); |
| 2042 | launchFlags |= Intent.FLAG_ACTIVITY_NEW_TASK; |
| 2043 | } |
| 2044 | } else if (sourceRecord.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { |
| 2045 | // The original activity who is starting us is running as a single |
| 2046 | // instance... this new activity it is starting must go on its |
| 2047 | // own task. |
| 2048 | launchFlags |= Intent.FLAG_ACTIVITY_NEW_TASK; |
| 2049 | } else if (r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE |
| 2050 | || r.launchMode == ActivityInfo.LAUNCH_SINGLE_TASK) { |
| 2051 | // The activity being started is a single instance... it always |
| 2052 | // gets launched into its own task. |
| 2053 | launchFlags |= Intent.FLAG_ACTIVITY_NEW_TASK; |
| 2054 | } |
| 2055 | |
| 2056 | if (r.resultTo != null && (launchFlags&Intent.FLAG_ACTIVITY_NEW_TASK) != 0) { |
| 2057 | // For whatever reason this activity is being launched into a new |
| 2058 | // task... yet the caller has requested a result back. Well, that |
| 2059 | // is pretty messed up, so instead immediately send back a cancel |
| 2060 | // and let the new task continue launched as normal without a |
| 2061 | // dependency on its originator. |
| 2062 | Slog.w(TAG, "Activity is launching as a new task, so cancelling activity result."); |
| 2063 | sendActivityResultLocked(-1, |
| 2064 | r.resultTo, r.resultWho, r.requestCode, |
| 2065 | Activity.RESULT_CANCELED, null); |
| 2066 | r.resultTo = null; |
| 2067 | } |
| 2068 | |
| 2069 | boolean addingToTask = false; |
| 2070 | if (((launchFlags&Intent.FLAG_ACTIVITY_NEW_TASK) != 0 && |
| 2071 | (launchFlags&Intent.FLAG_ACTIVITY_MULTIPLE_TASK) == 0) |
| 2072 | || r.launchMode == ActivityInfo.LAUNCH_SINGLE_TASK |
| 2073 | || r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { |
| 2074 | // If bring to front is requested, and no result is requested, and |
| 2075 | // we can find a task that was started with this same |
| 2076 | // component, then instead of launching bring that one to the front. |
| 2077 | if (r.resultTo == null) { |
| 2078 | // See if there is a task to bring to the front. If this is |
| 2079 | // a SINGLE_INSTANCE activity, there can be one and only one |
| 2080 | // instance of it in the history, and it is always in its own |
| 2081 | // unique task, so we do a special search. |
| 2082 | ActivityRecord taskTop = r.launchMode != ActivityInfo.LAUNCH_SINGLE_INSTANCE |
| 2083 | ? findTaskLocked(intent, r.info) |
| 2084 | : findActivityLocked(intent, r.info); |
| 2085 | if (taskTop != null) { |
| 2086 | if (taskTop.task.intent == null) { |
| 2087 | // This task was started because of movement of |
| 2088 | // the activity based on affinity... now that we |
| 2089 | // are actually launching it, we can assign the |
| 2090 | // base intent. |
| 2091 | taskTop.task.setIntent(intent, r.info); |
| 2092 | } |
| 2093 | // If the target task is not in the front, then we need |
| 2094 | // to bring it to the front... except... well, with |
| 2095 | // SINGLE_TASK_LAUNCH it's not entirely clear. We'd like |
| 2096 | // to have the same behavior as if a new instance was |
| 2097 | // being started, which means not bringing it to the front |
| 2098 | // if the caller is not itself in the front. |
| 2099 | ActivityRecord curTop = topRunningNonDelayedActivityLocked(notTop); |
| 2100 | if (curTop.task != taskTop.task) { |
| 2101 | r.intent.addFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT); |
| 2102 | boolean callerAtFront = sourceRecord == null |
| 2103 | || curTop.task == sourceRecord.task; |
| 2104 | if (callerAtFront) { |
| 2105 | // We really do want to push this one into the |
| 2106 | // user's face, right now. |
| 2107 | moveTaskToFrontLocked(taskTop.task, r); |
| 2108 | } |
| 2109 | } |
| 2110 | // If the caller has requested that the target task be |
| 2111 | // reset, then do so. |
| 2112 | if ((launchFlags&Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) { |
| 2113 | taskTop = resetTaskIfNeededLocked(taskTop, r); |
| 2114 | } |
| 2115 | if (onlyIfNeeded) { |
| 2116 | // We don't need to start a new activity, and |
| 2117 | // the client said not to do anything if that |
| 2118 | // is the case, so this is it! And for paranoia, make |
| 2119 | // sure we have correctly resumed the top activity. |
| 2120 | if (doResume) { |
| 2121 | resumeTopActivityLocked(null); |
| 2122 | } |
| 2123 | return START_RETURN_INTENT_TO_CALLER; |
| 2124 | } |
| 2125 | if ((launchFlags&Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0 |
| 2126 | || r.launchMode == ActivityInfo.LAUNCH_SINGLE_TASK |
| 2127 | || r.launchMode == ActivityInfo.LAUNCH_SINGLE_INSTANCE) { |
| 2128 | // In this situation we want to remove all activities |
| 2129 | // from the task up to the one being started. In most |
| 2130 | // cases this means we are resetting the task to its |
| 2131 | // initial state. |
| 2132 | ActivityRecord top = performClearTaskLocked( |
| 2133 | taskTop.task.taskId, r, launchFlags, true); |
| 2134 | if (top != null) { |
| 2135 | if (top.frontOfTask) { |
| 2136 | // Activity aliases may mean we use different |
| 2137 | // intents for the top activity, so make sure |
| 2138 | // the task now has the identity of the new |
| 2139 | // intent. |
| 2140 | top.task.setIntent(r.intent, r.info); |
| 2141 | } |
| 2142 | logStartActivity(EventLogTags.AM_NEW_INTENT, r, top.task); |
Dianne Hackborn | 39792d2 | 2010-08-19 18:01:52 -0700 | [diff] [blame] | 2143 | top.deliverNewIntentLocked(callingUid, r.intent); |
Dianne Hackborn | 50dc3bc | 2010-06-25 10:05:59 -0700 | [diff] [blame] | 2144 | } else { |
| 2145 | // A special case: we need to |
| 2146 | // start the activity because it is not currently |
| 2147 | // running, and the caller has asked to clear the |
| 2148 | // current task to have this activity at the top. |
| 2149 | addingToTask = true; |
| 2150 | // Now pretend like this activity is being started |
| 2151 | // by the top of its task, so it is put in the |
| 2152 | // right place. |
| 2153 | sourceRecord = taskTop; |
| 2154 | } |
| 2155 | } else if (r.realActivity.equals(taskTop.task.realActivity)) { |
| 2156 | // In this case the top activity on the task is the |
| 2157 | // same as the one being launched, so we take that |
| 2158 | // as a request to bring the task to the foreground. |
| 2159 | // If the top activity in the task is the root |
| 2160 | // activity, deliver this new intent to it if it |
| 2161 | // desires. |
| 2162 | if ((launchFlags&Intent.FLAG_ACTIVITY_SINGLE_TOP) != 0 |
| 2163 | && taskTop.realActivity.equals(r.realActivity)) { |
| 2164 | logStartActivity(EventLogTags.AM_NEW_INTENT, r, taskTop.task); |
| 2165 | if (taskTop.frontOfTask) { |
| 2166 | taskTop.task.setIntent(r.intent, r.info); |
| 2167 | } |
Dianne Hackborn | 39792d2 | 2010-08-19 18:01:52 -0700 | [diff] [blame] | 2168 | taskTop.deliverNewIntentLocked(callingUid, r.intent); |
Dianne Hackborn | 50dc3bc | 2010-06-25 10:05:59 -0700 | [diff] [blame] | 2169 | } else if (!r.intent.filterEquals(taskTop.task.intent)) { |
| 2170 | // In this case we are launching the root activity |
| 2171 | // of the task, but with a different intent. We |
| 2172 | // should start a new instance on top. |
| 2173 | addingToTask = true; |
| 2174 | sourceRecord = taskTop; |
| 2175 | } |
| 2176 | } else if ((launchFlags&Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) == 0) { |
| 2177 | // In this case an activity is being launched in to an |
| 2178 | // existing task, without resetting that task. This |
| 2179 | // is typically the situation of launching an activity |
| 2180 | // from a notification or shortcut. We want to place |
| 2181 | // the new activity on top of the current task. |
| 2182 | addingToTask = true; |
| 2183 | sourceRecord = taskTop; |
| 2184 | } else if (!taskTop.task.rootWasReset) { |
| 2185 | // In this case we are launching in to an existing task |
| 2186 | // that has not yet been started from its front door. |
| 2187 | // The current task has been brought to the front. |
| 2188 | // Ideally, we'd probably like to place this new task |
| 2189 | // at the bottom of its stack, but that's a little hard |
| 2190 | // to do with the current organization of the code so |
| 2191 | // for now we'll just drop it. |
| 2192 | taskTop.task.setIntent(r.intent, r.info); |
| 2193 | } |
| 2194 | if (!addingToTask) { |
| 2195 | // We didn't do anything... but it was needed (a.k.a., client |
| 2196 | // don't use that intent!) And for paranoia, make |
| 2197 | // sure we have correctly resumed the top activity. |
| 2198 | if (doResume) { |
| 2199 | resumeTopActivityLocked(null); |
| 2200 | } |
| 2201 | return START_TASK_TO_FRONT; |
| 2202 | } |
| 2203 | } |
| 2204 | } |
| 2205 | } |
| 2206 | |
| 2207 | //String uri = r.intent.toURI(); |
| 2208 | //Intent intent2 = new Intent(uri); |
| 2209 | //Slog.i(TAG, "Given intent: " + r.intent); |
| 2210 | //Slog.i(TAG, "URI is: " + uri); |
| 2211 | //Slog.i(TAG, "To intent: " + intent2); |
| 2212 | |
| 2213 | if (r.packageName != null) { |
| 2214 | // If the activity being launched is the same as the one currently |
| 2215 | // at the top, then we need to check if it should only be launched |
| 2216 | // once. |
| 2217 | ActivityRecord top = topRunningNonDelayedActivityLocked(notTop); |
| 2218 | if (top != null && r.resultTo == null) { |
| 2219 | if (top.realActivity.equals(r.realActivity)) { |
| 2220 | if (top.app != null && top.app.thread != null) { |
| 2221 | if ((launchFlags&Intent.FLAG_ACTIVITY_SINGLE_TOP) != 0 |
| 2222 | || r.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP |
| 2223 | || r.launchMode == ActivityInfo.LAUNCH_SINGLE_TASK) { |
| 2224 | logStartActivity(EventLogTags.AM_NEW_INTENT, top, top.task); |
| 2225 | // For paranoia, make sure we have correctly |
| 2226 | // resumed the top activity. |
| 2227 | if (doResume) { |
| 2228 | resumeTopActivityLocked(null); |
| 2229 | } |
| 2230 | if (onlyIfNeeded) { |
| 2231 | // We don't need to start a new activity, and |
| 2232 | // the client said not to do anything if that |
| 2233 | // is the case, so this is it! |
| 2234 | return START_RETURN_INTENT_TO_CALLER; |
| 2235 | } |
Dianne Hackborn | 39792d2 | 2010-08-19 18:01:52 -0700 | [diff] [blame] | 2236 | top.deliverNewIntentLocked(callingUid, r.intent); |
Dianne Hackborn | 50dc3bc | 2010-06-25 10:05:59 -0700 | [diff] [blame] | 2237 | return START_DELIVERED_TO_TOP; |
| 2238 | } |
| 2239 | } |
| 2240 | } |
| 2241 | } |
| 2242 | |
| 2243 | } else { |
| 2244 | if (r.resultTo != null) { |
| 2245 | sendActivityResultLocked(-1, |
| 2246 | r.resultTo, r.resultWho, r.requestCode, |
| 2247 | Activity.RESULT_CANCELED, null); |
| 2248 | } |
| 2249 | return START_CLASS_NOT_FOUND; |
| 2250 | } |
| 2251 | |
| 2252 | boolean newTask = false; |
| 2253 | |
| 2254 | // Should this be considered a new task? |
| 2255 | if (r.resultTo == null && !addingToTask |
| 2256 | && (launchFlags&Intent.FLAG_ACTIVITY_NEW_TASK) != 0) { |
| 2257 | // todo: should do better management of integers. |
| 2258 | mService.mCurTask++; |
| 2259 | if (mService.mCurTask <= 0) { |
| 2260 | mService.mCurTask = 1; |
| 2261 | } |
| 2262 | r.task = new TaskRecord(mService.mCurTask, r.info, intent, |
| 2263 | (r.info.flags&ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0); |
| 2264 | if (DEBUG_TASKS) Slog.v(TAG, "Starting new activity " + r |
| 2265 | + " in new task " + r.task); |
| 2266 | newTask = true; |
| 2267 | if (mMainStack) { |
| 2268 | mService.addRecentTaskLocked(r.task); |
| 2269 | } |
| 2270 | |
| 2271 | } else if (sourceRecord != null) { |
| 2272 | if (!addingToTask && |
| 2273 | (launchFlags&Intent.FLAG_ACTIVITY_CLEAR_TOP) != 0) { |
| 2274 | // In this case, we are adding the activity to an existing |
| 2275 | // task, but the caller has asked to clear that task if the |
| 2276 | // activity is already running. |
| 2277 | ActivityRecord top = performClearTaskLocked( |
| 2278 | sourceRecord.task.taskId, r, launchFlags, true); |
| 2279 | if (top != null) { |
| 2280 | logStartActivity(EventLogTags.AM_NEW_INTENT, r, top.task); |
Dianne Hackborn | 39792d2 | 2010-08-19 18:01:52 -0700 | [diff] [blame] | 2281 | top.deliverNewIntentLocked(callingUid, r.intent); |
Dianne Hackborn | 50dc3bc | 2010-06-25 10:05:59 -0700 | [diff] [blame] | 2282 | // For paranoia, make sure we have correctly |
| 2283 | // resumed the top activity. |
| 2284 | if (doResume) { |
| 2285 | resumeTopActivityLocked(null); |
| 2286 | } |
| 2287 | return START_DELIVERED_TO_TOP; |
| 2288 | } |
| 2289 | } else if (!addingToTask && |
| 2290 | (launchFlags&Intent.FLAG_ACTIVITY_REORDER_TO_FRONT) != 0) { |
| 2291 | // In this case, we are launching an activity in our own task |
| 2292 | // that may already be running somewhere in the history, and |
| 2293 | // we want to shuffle it to the front of the stack if so. |
| 2294 | int where = findActivityInHistoryLocked(r, sourceRecord.task.taskId); |
| 2295 | if (where >= 0) { |
| 2296 | ActivityRecord top = moveActivityToFrontLocked(where); |
| 2297 | logStartActivity(EventLogTags.AM_NEW_INTENT, r, top.task); |
Dianne Hackborn | 39792d2 | 2010-08-19 18:01:52 -0700 | [diff] [blame] | 2298 | top.deliverNewIntentLocked(callingUid, r.intent); |
Dianne Hackborn | 50dc3bc | 2010-06-25 10:05:59 -0700 | [diff] [blame] | 2299 | if (doResume) { |
| 2300 | resumeTopActivityLocked(null); |
| 2301 | } |
| 2302 | return START_DELIVERED_TO_TOP; |
| 2303 | } |
| 2304 | } |
| 2305 | // An existing activity is starting this new activity, so we want |
| 2306 | // to keep the new one in the same task as the one that is starting |
| 2307 | // it. |
| 2308 | r.task = sourceRecord.task; |
| 2309 | if (DEBUG_TASKS) Slog.v(TAG, "Starting new activity " + r |
| 2310 | + " in existing task " + r.task); |
| 2311 | |
| 2312 | } else { |
| 2313 | // This not being started from an existing activity, and not part |
| 2314 | // of a new task... just put it in the top task, though these days |
| 2315 | // this case should never happen. |
| 2316 | final int N = mHistory.size(); |
| 2317 | ActivityRecord prev = |
| 2318 | N > 0 ? (ActivityRecord)mHistory.get(N-1) : null; |
| 2319 | r.task = prev != null |
| 2320 | ? prev.task |
| 2321 | : new TaskRecord(mService.mCurTask, r.info, intent, |
| 2322 | (r.info.flags&ActivityInfo.FLAG_CLEAR_TASK_ON_LAUNCH) != 0); |
| 2323 | if (DEBUG_TASKS) Slog.v(TAG, "Starting new activity " + r |
| 2324 | + " in new guessed " + r.task); |
| 2325 | } |
Dianne Hackborn | 39792d2 | 2010-08-19 18:01:52 -0700 | [diff] [blame] | 2326 | |
| 2327 | if (grantedUriPermissions != null && callingUid > 0) { |
| 2328 | for (int i=0; i<grantedUriPermissions.length; i++) { |
| 2329 | mService.grantUriPermissionLocked(callingUid, r.packageName, |
Dianne Hackborn | 7e26964 | 2010-08-25 19:50:20 -0700 | [diff] [blame^] | 2330 | grantedUriPermissions[i], grantedMode, r.getUriPermissionsLocked()); |
Dianne Hackborn | 39792d2 | 2010-08-19 18:01:52 -0700 | [diff] [blame] | 2331 | } |
| 2332 | } |
| 2333 | |
| 2334 | mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, |
Dianne Hackborn | 7e26964 | 2010-08-25 19:50:20 -0700 | [diff] [blame^] | 2335 | intent, r.getUriPermissionsLocked()); |
Dianne Hackborn | 39792d2 | 2010-08-19 18:01:52 -0700 | [diff] [blame] | 2336 | |
Dianne Hackborn | 50dc3bc | 2010-06-25 10:05:59 -0700 | [diff] [blame] | 2337 | if (newTask) { |
| 2338 | EventLog.writeEvent(EventLogTags.AM_CREATE_TASK, r.task.taskId); |
| 2339 | } |
| 2340 | logStartActivity(EventLogTags.AM_CREATE_ACTIVITY, r, r.task); |
| 2341 | startActivityLocked(r, newTask, doResume); |
| 2342 | return START_SUCCESS; |
| 2343 | } |
| 2344 | |
| 2345 | final int startActivityMayWait(IApplicationThread caller, |
| 2346 | Intent intent, String resolvedType, Uri[] grantedUriPermissions, |
| 2347 | int grantedMode, IBinder resultTo, |
| 2348 | String resultWho, int requestCode, boolean onlyIfNeeded, |
| 2349 | boolean debug, WaitResult outResult, Configuration config) { |
| 2350 | // Refuse possible leaked file descriptors |
| 2351 | if (intent != null && intent.hasFileDescriptors()) { |
| 2352 | throw new IllegalArgumentException("File descriptors passed in Intent"); |
| 2353 | } |
| 2354 | |
| 2355 | boolean componentSpecified = intent.getComponent() != null; |
| 2356 | |
| 2357 | // Don't modify the client's object! |
| 2358 | intent = new Intent(intent); |
| 2359 | |
| 2360 | // Collect information about the target of the Intent. |
| 2361 | ActivityInfo aInfo; |
| 2362 | try { |
| 2363 | ResolveInfo rInfo = |
| 2364 | AppGlobals.getPackageManager().resolveIntent( |
| 2365 | intent, resolvedType, |
| 2366 | PackageManager.MATCH_DEFAULT_ONLY |
| 2367 | | ActivityManagerService.STOCK_PM_FLAGS); |
| 2368 | aInfo = rInfo != null ? rInfo.activityInfo : null; |
| 2369 | } catch (RemoteException e) { |
| 2370 | aInfo = null; |
| 2371 | } |
| 2372 | |
| 2373 | if (aInfo != null) { |
| 2374 | // Store the found target back into the intent, because now that |
| 2375 | // we have it we never want to do this again. For example, if the |
| 2376 | // user navigates back to this point in the history, we should |
| 2377 | // always restart the exact same activity. |
| 2378 | intent.setComponent(new ComponentName( |
| 2379 | aInfo.applicationInfo.packageName, aInfo.name)); |
| 2380 | |
| 2381 | // Don't debug things in the system process |
| 2382 | if (debug) { |
| 2383 | if (!aInfo.processName.equals("system")) { |
| 2384 | mService.setDebugApp(aInfo.processName, true, false); |
| 2385 | } |
| 2386 | } |
| 2387 | } |
| 2388 | |
| 2389 | synchronized (mService) { |
| 2390 | int callingPid; |
| 2391 | int callingUid; |
| 2392 | if (caller == null) { |
| 2393 | callingPid = Binder.getCallingPid(); |
| 2394 | callingUid = Binder.getCallingUid(); |
| 2395 | } else { |
| 2396 | callingPid = callingUid = -1; |
| 2397 | } |
| 2398 | |
| 2399 | mConfigWillChange = config != null |
| 2400 | && mService.mConfiguration.diff(config) != 0; |
| 2401 | if (DEBUG_CONFIGURATION) Slog.v(TAG, |
| 2402 | "Starting activity when config will change = " + mConfigWillChange); |
| 2403 | |
| 2404 | final long origId = Binder.clearCallingIdentity(); |
| 2405 | |
| 2406 | if (mMainStack && aInfo != null && |
| 2407 | (aInfo.applicationInfo.flags&ApplicationInfo.FLAG_HEAVY_WEIGHT) != 0) { |
| 2408 | // This may be a heavy-weight process! Check to see if we already |
| 2409 | // have another, different heavy-weight process running. |
| 2410 | if (aInfo.processName.equals(aInfo.applicationInfo.packageName)) { |
| 2411 | if (mService.mHeavyWeightProcess != null && |
| 2412 | (mService.mHeavyWeightProcess.info.uid != aInfo.applicationInfo.uid || |
| 2413 | !mService.mHeavyWeightProcess.processName.equals(aInfo.processName))) { |
| 2414 | int realCallingPid = callingPid; |
| 2415 | int realCallingUid = callingUid; |
| 2416 | if (caller != null) { |
| 2417 | ProcessRecord callerApp = mService.getRecordForAppLocked(caller); |
| 2418 | if (callerApp != null) { |
| 2419 | realCallingPid = callerApp.pid; |
| 2420 | realCallingUid = callerApp.info.uid; |
| 2421 | } else { |
| 2422 | Slog.w(TAG, "Unable to find app for caller " + caller |
| 2423 | + " (pid=" + realCallingPid + ") when starting: " |
| 2424 | + intent.toString()); |
| 2425 | return START_PERMISSION_DENIED; |
| 2426 | } |
| 2427 | } |
| 2428 | |
| 2429 | IIntentSender target = mService.getIntentSenderLocked( |
| 2430 | IActivityManager.INTENT_SENDER_ACTIVITY, "android", |
| 2431 | realCallingUid, null, null, 0, intent, |
| 2432 | resolvedType, PendingIntent.FLAG_CANCEL_CURRENT |
| 2433 | | PendingIntent.FLAG_ONE_SHOT); |
| 2434 | |
| 2435 | Intent newIntent = new Intent(); |
| 2436 | if (requestCode >= 0) { |
| 2437 | // Caller is requesting a result. |
| 2438 | newIntent.putExtra(HeavyWeightSwitcherActivity.KEY_HAS_RESULT, true); |
| 2439 | } |
| 2440 | newIntent.putExtra(HeavyWeightSwitcherActivity.KEY_INTENT, |
| 2441 | new IntentSender(target)); |
| 2442 | if (mService.mHeavyWeightProcess.activities.size() > 0) { |
| 2443 | ActivityRecord hist = mService.mHeavyWeightProcess.activities.get(0); |
| 2444 | newIntent.putExtra(HeavyWeightSwitcherActivity.KEY_CUR_APP, |
| 2445 | hist.packageName); |
| 2446 | newIntent.putExtra(HeavyWeightSwitcherActivity.KEY_CUR_TASK, |
| 2447 | hist.task.taskId); |
| 2448 | } |
| 2449 | newIntent.putExtra(HeavyWeightSwitcherActivity.KEY_NEW_APP, |
| 2450 | aInfo.packageName); |
| 2451 | newIntent.setFlags(intent.getFlags()); |
| 2452 | newIntent.setClassName("android", |
| 2453 | HeavyWeightSwitcherActivity.class.getName()); |
| 2454 | intent = newIntent; |
| 2455 | resolvedType = null; |
| 2456 | caller = null; |
| 2457 | callingUid = Binder.getCallingUid(); |
| 2458 | callingPid = Binder.getCallingPid(); |
| 2459 | componentSpecified = true; |
| 2460 | try { |
| 2461 | ResolveInfo rInfo = |
| 2462 | AppGlobals.getPackageManager().resolveIntent( |
| 2463 | intent, null, |
| 2464 | PackageManager.MATCH_DEFAULT_ONLY |
| 2465 | | ActivityManagerService.STOCK_PM_FLAGS); |
| 2466 | aInfo = rInfo != null ? rInfo.activityInfo : null; |
| 2467 | } catch (RemoteException e) { |
| 2468 | aInfo = null; |
| 2469 | } |
| 2470 | } |
| 2471 | } |
| 2472 | } |
| 2473 | |
| 2474 | int res = startActivityLocked(caller, intent, resolvedType, |
| 2475 | grantedUriPermissions, grantedMode, aInfo, |
| 2476 | resultTo, resultWho, requestCode, callingPid, callingUid, |
| 2477 | onlyIfNeeded, componentSpecified); |
| 2478 | |
| 2479 | if (mConfigWillChange && mMainStack) { |
| 2480 | // If the caller also wants to switch to a new configuration, |
| 2481 | // do so now. This allows a clean switch, as we are waiting |
| 2482 | // for the current activity to pause (so we will not destroy |
| 2483 | // it), and have not yet started the next activity. |
| 2484 | mService.enforceCallingPermission(android.Manifest.permission.CHANGE_CONFIGURATION, |
| 2485 | "updateConfiguration()"); |
| 2486 | mConfigWillChange = false; |
| 2487 | if (DEBUG_CONFIGURATION) Slog.v(TAG, |
| 2488 | "Updating to new configuration after starting activity."); |
| 2489 | mService.updateConfigurationLocked(config, null); |
| 2490 | } |
| 2491 | |
| 2492 | Binder.restoreCallingIdentity(origId); |
| 2493 | |
| 2494 | if (outResult != null) { |
| 2495 | outResult.result = res; |
| 2496 | if (res == IActivityManager.START_SUCCESS) { |
| 2497 | mWaitingActivityLaunched.add(outResult); |
| 2498 | do { |
| 2499 | try { |
| 2500 | wait(); |
| 2501 | } catch (InterruptedException e) { |
| 2502 | } |
| 2503 | } while (!outResult.timeout && outResult.who == null); |
| 2504 | } else if (res == IActivityManager.START_TASK_TO_FRONT) { |
| 2505 | ActivityRecord r = this.topRunningActivityLocked(null); |
| 2506 | if (r.nowVisible) { |
| 2507 | outResult.timeout = false; |
| 2508 | outResult.who = new ComponentName(r.info.packageName, r.info.name); |
| 2509 | outResult.totalTime = 0; |
| 2510 | outResult.thisTime = 0; |
| 2511 | } else { |
| 2512 | outResult.thisTime = SystemClock.uptimeMillis(); |
| 2513 | mWaitingActivityVisible.add(outResult); |
| 2514 | do { |
| 2515 | try { |
| 2516 | wait(); |
| 2517 | } catch (InterruptedException e) { |
| 2518 | } |
| 2519 | } while (!outResult.timeout && outResult.who == null); |
| 2520 | } |
| 2521 | } |
| 2522 | } |
| 2523 | |
| 2524 | return res; |
| 2525 | } |
| 2526 | } |
| 2527 | |
| 2528 | void reportActivityLaunchedLocked(boolean timeout, ActivityRecord r, |
| 2529 | long thisTime, long totalTime) { |
| 2530 | for (int i=mWaitingActivityLaunched.size()-1; i>=0; i--) { |
| 2531 | WaitResult w = mWaitingActivityLaunched.get(i); |
| 2532 | w.timeout = timeout; |
| 2533 | if (r != null) { |
| 2534 | w.who = new ComponentName(r.info.packageName, r.info.name); |
| 2535 | } |
| 2536 | w.thisTime = thisTime; |
| 2537 | w.totalTime = totalTime; |
| 2538 | } |
| 2539 | mService.notifyAll(); |
| 2540 | } |
| 2541 | |
| 2542 | void reportActivityVisibleLocked(ActivityRecord r) { |
| 2543 | for (int i=mWaitingActivityVisible.size()-1; i>=0; i--) { |
| 2544 | WaitResult w = mWaitingActivityVisible.get(i); |
| 2545 | w.timeout = false; |
| 2546 | if (r != null) { |
| 2547 | w.who = new ComponentName(r.info.packageName, r.info.name); |
| 2548 | } |
| 2549 | w.totalTime = SystemClock.uptimeMillis() - w.thisTime; |
| 2550 | w.thisTime = w.totalTime; |
| 2551 | } |
| 2552 | mService.notifyAll(); |
| 2553 | } |
| 2554 | |
| 2555 | void sendActivityResultLocked(int callingUid, ActivityRecord r, |
| 2556 | String resultWho, int requestCode, int resultCode, Intent data) { |
| 2557 | |
| 2558 | if (callingUid > 0) { |
| 2559 | mService.grantUriPermissionFromIntentLocked(callingUid, r.packageName, |
Dianne Hackborn | 7e26964 | 2010-08-25 19:50:20 -0700 | [diff] [blame^] | 2560 | data, r.getUriPermissionsLocked()); |
Dianne Hackborn | 50dc3bc | 2010-06-25 10:05:59 -0700 | [diff] [blame] | 2561 | } |
| 2562 | |
| 2563 | if (DEBUG_RESULTS) Slog.v(TAG, "Send activity result to " + r |
| 2564 | + " : who=" + resultWho + " req=" + requestCode |
| 2565 | + " res=" + resultCode + " data=" + data); |
| 2566 | if (mResumedActivity == r && r.app != null && r.app.thread != null) { |
| 2567 | try { |
| 2568 | ArrayList<ResultInfo> list = new ArrayList<ResultInfo>(); |
| 2569 | list.add(new ResultInfo(resultWho, requestCode, |
| 2570 | resultCode, data)); |
| 2571 | r.app.thread.scheduleSendResult(r, list); |
| 2572 | return; |
| 2573 | } catch (Exception e) { |
| 2574 | Slog.w(TAG, "Exception thrown sending result to " + r, e); |
| 2575 | } |
| 2576 | } |
| 2577 | |
| 2578 | r.addResultLocked(null, resultWho, requestCode, resultCode, data); |
| 2579 | } |
| 2580 | |
| 2581 | private final void stopActivityLocked(ActivityRecord r) { |
| 2582 | if (DEBUG_SWITCH) Slog.d(TAG, "Stopping: " + r); |
| 2583 | if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_HISTORY) != 0 |
| 2584 | || (r.info.flags&ActivityInfo.FLAG_NO_HISTORY) != 0) { |
| 2585 | if (!r.finishing) { |
| 2586 | requestFinishActivityLocked(r, Activity.RESULT_CANCELED, null, |
| 2587 | "no-history"); |
| 2588 | } |
| 2589 | } else if (r.app != null && r.app.thread != null) { |
| 2590 | if (mMainStack) { |
| 2591 | if (mService.mFocusedActivity == r) { |
| 2592 | mService.setFocusedActivityLocked(topRunningActivityLocked(null)); |
| 2593 | } |
| 2594 | } |
| 2595 | r.resumeKeyDispatchingLocked(); |
| 2596 | try { |
| 2597 | r.stopped = false; |
| 2598 | r.state = ActivityState.STOPPING; |
| 2599 | if (DEBUG_VISBILITY) Slog.v( |
| 2600 | TAG, "Stopping visible=" + r.visible + " for " + r); |
| 2601 | if (!r.visible) { |
| 2602 | mService.mWindowManager.setAppVisibility(r, false); |
| 2603 | } |
| 2604 | r.app.thread.scheduleStopActivity(r, r.visible, r.configChangeFlags); |
| 2605 | } catch (Exception e) { |
| 2606 | // Maybe just ignore exceptions here... if the process |
| 2607 | // has crashed, our death notification will clean things |
| 2608 | // up. |
| 2609 | Slog.w(TAG, "Exception thrown during pause", e); |
| 2610 | // Just in case, assume it to be stopped. |
| 2611 | r.stopped = true; |
| 2612 | r.state = ActivityState.STOPPED; |
| 2613 | if (r.configDestroy) { |
| 2614 | destroyActivityLocked(r, true); |
| 2615 | } |
| 2616 | } |
| 2617 | } |
| 2618 | } |
| 2619 | |
| 2620 | final ArrayList<ActivityRecord> processStoppingActivitiesLocked( |
| 2621 | boolean remove) { |
| 2622 | int N = mStoppingActivities.size(); |
| 2623 | if (N <= 0) return null; |
| 2624 | |
| 2625 | ArrayList<ActivityRecord> stops = null; |
| 2626 | |
| 2627 | final boolean nowVisible = mResumedActivity != null |
| 2628 | && mResumedActivity.nowVisible |
| 2629 | && !mResumedActivity.waitingVisible; |
| 2630 | for (int i=0; i<N; i++) { |
| 2631 | ActivityRecord s = mStoppingActivities.get(i); |
| 2632 | if (localLOGV) Slog.v(TAG, "Stopping " + s + ": nowVisible=" |
| 2633 | + nowVisible + " waitingVisible=" + s.waitingVisible |
| 2634 | + " finishing=" + s.finishing); |
| 2635 | if (s.waitingVisible && nowVisible) { |
| 2636 | mWaitingVisibleActivities.remove(s); |
| 2637 | s.waitingVisible = false; |
| 2638 | if (s.finishing) { |
| 2639 | // If this activity is finishing, it is sitting on top of |
| 2640 | // everyone else but we now know it is no longer needed... |
| 2641 | // so get rid of it. Otherwise, we need to go through the |
| 2642 | // normal flow and hide it once we determine that it is |
| 2643 | // hidden by the activities in front of it. |
| 2644 | if (localLOGV) Slog.v(TAG, "Before stopping, can hide: " + s); |
| 2645 | mService.mWindowManager.setAppVisibility(s, false); |
| 2646 | } |
| 2647 | } |
| 2648 | if (!s.waitingVisible && remove) { |
| 2649 | if (localLOGV) Slog.v(TAG, "Ready to stop: " + s); |
| 2650 | if (stops == null) { |
| 2651 | stops = new ArrayList<ActivityRecord>(); |
| 2652 | } |
| 2653 | stops.add(s); |
| 2654 | mStoppingActivities.remove(i); |
| 2655 | N--; |
| 2656 | i--; |
| 2657 | } |
| 2658 | } |
| 2659 | |
| 2660 | return stops; |
| 2661 | } |
| 2662 | |
| 2663 | final void activityIdleInternal(IBinder token, boolean fromTimeout, |
| 2664 | Configuration config) { |
| 2665 | if (localLOGV) Slog.v(TAG, "Activity idle: " + token); |
| 2666 | |
| 2667 | ArrayList<ActivityRecord> stops = null; |
| 2668 | ArrayList<ActivityRecord> finishes = null; |
| 2669 | ArrayList<ActivityRecord> thumbnails = null; |
| 2670 | int NS = 0; |
| 2671 | int NF = 0; |
| 2672 | int NT = 0; |
| 2673 | IApplicationThread sendThumbnail = null; |
| 2674 | boolean booting = false; |
| 2675 | boolean enableScreen = false; |
| 2676 | |
| 2677 | synchronized (mService) { |
| 2678 | if (token != null) { |
| 2679 | mHandler.removeMessages(IDLE_TIMEOUT_MSG, token); |
| 2680 | } |
| 2681 | |
| 2682 | // Get the activity record. |
| 2683 | int index = indexOfTokenLocked(token); |
| 2684 | if (index >= 0) { |
| 2685 | ActivityRecord r = (ActivityRecord)mHistory.get(index); |
| 2686 | |
| 2687 | if (fromTimeout) { |
| 2688 | reportActivityLaunchedLocked(fromTimeout, r, -1, -1); |
| 2689 | } |
| 2690 | |
| 2691 | // This is a hack to semi-deal with a race condition |
| 2692 | // in the client where it can be constructed with a |
| 2693 | // newer configuration from when we asked it to launch. |
| 2694 | // We'll update with whatever configuration it now says |
| 2695 | // it used to launch. |
| 2696 | if (config != null) { |
| 2697 | r.configuration = config; |
| 2698 | } |
| 2699 | |
| 2700 | // No longer need to keep the device awake. |
| 2701 | if (mResumedActivity == r && mLaunchingActivity.isHeld()) { |
| 2702 | mHandler.removeMessages(LAUNCH_TIMEOUT_MSG); |
| 2703 | mLaunchingActivity.release(); |
| 2704 | } |
| 2705 | |
| 2706 | // We are now idle. If someone is waiting for a thumbnail from |
| 2707 | // us, we can now deliver. |
| 2708 | r.idle = true; |
| 2709 | mService.scheduleAppGcsLocked(); |
| 2710 | if (r.thumbnailNeeded && r.app != null && r.app.thread != null) { |
| 2711 | sendThumbnail = r.app.thread; |
| 2712 | r.thumbnailNeeded = false; |
| 2713 | } |
| 2714 | |
| 2715 | // If this activity is fullscreen, set up to hide those under it. |
| 2716 | |
| 2717 | if (DEBUG_VISBILITY) Slog.v(TAG, "Idle activity for " + r); |
| 2718 | ensureActivitiesVisibleLocked(null, 0); |
| 2719 | |
| 2720 | //Slog.i(TAG, "IDLE: mBooted=" + mBooted + ", fromTimeout=" + fromTimeout); |
| 2721 | if (mMainStack) { |
| 2722 | if (!mService.mBooted && !fromTimeout) { |
| 2723 | mService.mBooted = true; |
| 2724 | enableScreen = true; |
| 2725 | } |
| 2726 | } |
| 2727 | |
| 2728 | } else if (fromTimeout) { |
| 2729 | reportActivityLaunchedLocked(fromTimeout, null, -1, -1); |
| 2730 | } |
| 2731 | |
| 2732 | // Atomically retrieve all of the other things to do. |
| 2733 | stops = processStoppingActivitiesLocked(true); |
| 2734 | NS = stops != null ? stops.size() : 0; |
| 2735 | if ((NF=mFinishingActivities.size()) > 0) { |
| 2736 | finishes = new ArrayList<ActivityRecord>(mFinishingActivities); |
| 2737 | mFinishingActivities.clear(); |
| 2738 | } |
| 2739 | if ((NT=mService.mCancelledThumbnails.size()) > 0) { |
| 2740 | thumbnails = new ArrayList<ActivityRecord>(mService.mCancelledThumbnails); |
| 2741 | mService.mCancelledThumbnails.clear(); |
| 2742 | } |
| 2743 | |
| 2744 | if (mMainStack) { |
| 2745 | booting = mService.mBooting; |
| 2746 | mService.mBooting = false; |
| 2747 | } |
| 2748 | } |
| 2749 | |
| 2750 | int i; |
| 2751 | |
| 2752 | // Send thumbnail if requested. |
| 2753 | if (sendThumbnail != null) { |
| 2754 | try { |
| 2755 | sendThumbnail.requestThumbnail(token); |
| 2756 | } catch (Exception e) { |
| 2757 | Slog.w(TAG, "Exception thrown when requesting thumbnail", e); |
| 2758 | mService.sendPendingThumbnail(null, token, null, null, true); |
| 2759 | } |
| 2760 | } |
| 2761 | |
| 2762 | // Stop any activities that are scheduled to do so but have been |
| 2763 | // waiting for the next one to start. |
| 2764 | for (i=0; i<NS; i++) { |
| 2765 | ActivityRecord r = (ActivityRecord)stops.get(i); |
| 2766 | synchronized (mService) { |
| 2767 | if (r.finishing) { |
| 2768 | finishCurrentActivityLocked(r, FINISH_IMMEDIATELY); |
| 2769 | } else { |
| 2770 | stopActivityLocked(r); |
| 2771 | } |
| 2772 | } |
| 2773 | } |
| 2774 | |
| 2775 | // Finish any activities that are scheduled to do so but have been |
| 2776 | // waiting for the next one to start. |
| 2777 | for (i=0; i<NF; i++) { |
| 2778 | ActivityRecord r = (ActivityRecord)finishes.get(i); |
| 2779 | synchronized (mService) { |
| 2780 | destroyActivityLocked(r, true); |
| 2781 | } |
| 2782 | } |
| 2783 | |
| 2784 | // Report back to any thumbnail receivers. |
| 2785 | for (i=0; i<NT; i++) { |
| 2786 | ActivityRecord r = (ActivityRecord)thumbnails.get(i); |
| 2787 | mService.sendPendingThumbnail(r, null, null, null, true); |
| 2788 | } |
| 2789 | |
| 2790 | if (booting) { |
| 2791 | mService.finishBooting(); |
| 2792 | } |
| 2793 | |
| 2794 | mService.trimApplications(); |
| 2795 | //dump(); |
| 2796 | //mWindowManager.dump(); |
| 2797 | |
| 2798 | if (enableScreen) { |
| 2799 | mService.enableScreenAfterBoot(); |
| 2800 | } |
| 2801 | } |
| 2802 | |
| 2803 | /** |
| 2804 | * @return Returns true if the activity is being finished, false if for |
| 2805 | * some reason it is being left as-is. |
| 2806 | */ |
| 2807 | final boolean requestFinishActivityLocked(IBinder token, int resultCode, |
| 2808 | Intent resultData, String reason) { |
| 2809 | if (DEBUG_RESULTS) Slog.v( |
| 2810 | TAG, "Finishing activity: token=" + token |
| 2811 | + ", result=" + resultCode + ", data=" + resultData); |
| 2812 | |
| 2813 | int index = indexOfTokenLocked(token); |
| 2814 | if (index < 0) { |
| 2815 | return false; |
| 2816 | } |
| 2817 | ActivityRecord r = (ActivityRecord)mHistory.get(index); |
| 2818 | |
| 2819 | // Is this the last activity left? |
| 2820 | boolean lastActivity = true; |
| 2821 | for (int i=mHistory.size()-1; i>=0; i--) { |
| 2822 | ActivityRecord p = (ActivityRecord)mHistory.get(i); |
| 2823 | if (!p.finishing && p != r) { |
| 2824 | lastActivity = false; |
| 2825 | break; |
| 2826 | } |
| 2827 | } |
| 2828 | |
| 2829 | // If this is the last activity, but it is the home activity, then |
| 2830 | // just don't finish it. |
| 2831 | if (lastActivity) { |
| 2832 | if (r.intent.hasCategory(Intent.CATEGORY_HOME)) { |
| 2833 | return false; |
| 2834 | } |
| 2835 | } |
| 2836 | |
| 2837 | finishActivityLocked(r, index, resultCode, resultData, reason); |
| 2838 | return true; |
| 2839 | } |
| 2840 | |
| 2841 | /** |
| 2842 | * @return Returns true if this activity has been removed from the history |
| 2843 | * list, or false if it is still in the list and will be removed later. |
| 2844 | */ |
| 2845 | final boolean finishActivityLocked(ActivityRecord r, int index, |
| 2846 | int resultCode, Intent resultData, String reason) { |
| 2847 | if (r.finishing) { |
| 2848 | Slog.w(TAG, "Duplicate finish request for " + r); |
| 2849 | return false; |
| 2850 | } |
| 2851 | |
| 2852 | r.finishing = true; |
| 2853 | EventLog.writeEvent(EventLogTags.AM_FINISH_ACTIVITY, |
| 2854 | System.identityHashCode(r), |
| 2855 | r.task.taskId, r.shortComponentName, reason); |
| 2856 | r.task.numActivities--; |
| 2857 | if (index < (mHistory.size()-1)) { |
| 2858 | ActivityRecord next = (ActivityRecord)mHistory.get(index+1); |
| 2859 | if (next.task == r.task) { |
| 2860 | if (r.frontOfTask) { |
| 2861 | // The next activity is now the front of the task. |
| 2862 | next.frontOfTask = true; |
| 2863 | } |
| 2864 | if ((r.intent.getFlags()&Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) { |
| 2865 | // If the caller asked that this activity (and all above it) |
| 2866 | // be cleared when the task is reset, don't lose that information, |
| 2867 | // but propagate it up to the next activity. |
| 2868 | next.intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); |
| 2869 | } |
| 2870 | } |
| 2871 | } |
| 2872 | |
| 2873 | r.pauseKeyDispatchingLocked(); |
| 2874 | if (mMainStack) { |
| 2875 | if (mService.mFocusedActivity == r) { |
| 2876 | mService.setFocusedActivityLocked(topRunningActivityLocked(null)); |
| 2877 | } |
| 2878 | } |
| 2879 | |
| 2880 | // send the result |
| 2881 | ActivityRecord resultTo = r.resultTo; |
| 2882 | if (resultTo != null) { |
| 2883 | if (DEBUG_RESULTS) Slog.v(TAG, "Adding result to " + resultTo |
| 2884 | + " who=" + r.resultWho + " req=" + r.requestCode |
| 2885 | + " res=" + resultCode + " data=" + resultData); |
| 2886 | if (r.info.applicationInfo.uid > 0) { |
| 2887 | mService.grantUriPermissionFromIntentLocked(r.info.applicationInfo.uid, |
Dianne Hackborn | 7e26964 | 2010-08-25 19:50:20 -0700 | [diff] [blame^] | 2888 | r.packageName, resultData, r.getUriPermissionsLocked()); |
Dianne Hackborn | 50dc3bc | 2010-06-25 10:05:59 -0700 | [diff] [blame] | 2889 | } |
| 2890 | resultTo.addResultLocked(r, r.resultWho, r.requestCode, resultCode, |
| 2891 | resultData); |
| 2892 | r.resultTo = null; |
| 2893 | } |
| 2894 | else if (DEBUG_RESULTS) Slog.v(TAG, "No result destination from " + r); |
| 2895 | |
| 2896 | // Make sure this HistoryRecord is not holding on to other resources, |
| 2897 | // because clients have remote IPC references to this object so we |
| 2898 | // can't assume that will go away and want to avoid circular IPC refs. |
| 2899 | r.results = null; |
| 2900 | r.pendingResults = null; |
| 2901 | r.newIntents = null; |
| 2902 | r.icicle = null; |
| 2903 | |
| 2904 | if (mService.mPendingThumbnails.size() > 0) { |
| 2905 | // There are clients waiting to receive thumbnails so, in case |
| 2906 | // this is an activity that someone is waiting for, add it |
| 2907 | // to the pending list so we can correctly update the clients. |
| 2908 | mService.mCancelledThumbnails.add(r); |
| 2909 | } |
| 2910 | |
| 2911 | if (mResumedActivity == r) { |
| 2912 | boolean endTask = index <= 0 |
| 2913 | || ((ActivityRecord)mHistory.get(index-1)).task != r.task; |
| 2914 | if (DEBUG_TRANSITION) Slog.v(TAG, |
| 2915 | "Prepare close transition: finishing " + r); |
| 2916 | mService.mWindowManager.prepareAppTransition(endTask |
| 2917 | ? WindowManagerPolicy.TRANSIT_TASK_CLOSE |
| 2918 | : WindowManagerPolicy.TRANSIT_ACTIVITY_CLOSE); |
| 2919 | |
| 2920 | // Tell window manager to prepare for this one to be removed. |
| 2921 | mService.mWindowManager.setAppVisibility(r, false); |
| 2922 | |
| 2923 | if (mPausingActivity == null) { |
| 2924 | if (DEBUG_PAUSE) Slog.v(TAG, "Finish needs to pause: " + r); |
| 2925 | if (DEBUG_USER_LEAVING) Slog.v(TAG, "finish() => pause with userLeaving=false"); |
| 2926 | startPausingLocked(false, false); |
| 2927 | } |
| 2928 | |
| 2929 | } else if (r.state != ActivityState.PAUSING) { |
| 2930 | // If the activity is PAUSING, we will complete the finish once |
| 2931 | // it is done pausing; else we can just directly finish it here. |
| 2932 | if (DEBUG_PAUSE) Slog.v(TAG, "Finish not pausing: " + r); |
| 2933 | return finishCurrentActivityLocked(r, index, |
| 2934 | FINISH_AFTER_PAUSE) == null; |
| 2935 | } else { |
| 2936 | if (DEBUG_PAUSE) Slog.v(TAG, "Finish waiting for pause of: " + r); |
| 2937 | } |
| 2938 | |
| 2939 | return false; |
| 2940 | } |
| 2941 | |
| 2942 | private static final int FINISH_IMMEDIATELY = 0; |
| 2943 | private static final int FINISH_AFTER_PAUSE = 1; |
| 2944 | private static final int FINISH_AFTER_VISIBLE = 2; |
| 2945 | |
| 2946 | private final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, |
| 2947 | int mode) { |
| 2948 | final int index = indexOfTokenLocked(r); |
| 2949 | if (index < 0) { |
| 2950 | return null; |
| 2951 | } |
| 2952 | |
| 2953 | return finishCurrentActivityLocked(r, index, mode); |
| 2954 | } |
| 2955 | |
| 2956 | private final ActivityRecord finishCurrentActivityLocked(ActivityRecord r, |
| 2957 | int index, int mode) { |
| 2958 | // First things first: if this activity is currently visible, |
| 2959 | // and the resumed activity is not yet visible, then hold off on |
| 2960 | // finishing until the resumed one becomes visible. |
| 2961 | if (mode == FINISH_AFTER_VISIBLE && r.nowVisible) { |
| 2962 | if (!mStoppingActivities.contains(r)) { |
| 2963 | mStoppingActivities.add(r); |
| 2964 | if (mStoppingActivities.size() > 3) { |
| 2965 | // If we already have a few activities waiting to stop, |
| 2966 | // then give up on things going idle and start clearing |
| 2967 | // them out. |
| 2968 | Message msg = Message.obtain(); |
| 2969 | msg.what = IDLE_NOW_MSG; |
| 2970 | mHandler.sendMessage(msg); |
| 2971 | } |
| 2972 | } |
| 2973 | r.state = ActivityState.STOPPING; |
| 2974 | mService.updateOomAdjLocked(); |
| 2975 | return r; |
| 2976 | } |
| 2977 | |
| 2978 | // make sure the record is cleaned out of other places. |
| 2979 | mStoppingActivities.remove(r); |
| 2980 | mWaitingVisibleActivities.remove(r); |
| 2981 | if (mResumedActivity == r) { |
| 2982 | mResumedActivity = null; |
| 2983 | } |
| 2984 | final ActivityState prevState = r.state; |
| 2985 | r.state = ActivityState.FINISHING; |
| 2986 | |
| 2987 | if (mode == FINISH_IMMEDIATELY |
| 2988 | || prevState == ActivityState.STOPPED |
| 2989 | || prevState == ActivityState.INITIALIZING) { |
| 2990 | // If this activity is already stopped, we can just finish |
| 2991 | // it right now. |
| 2992 | return destroyActivityLocked(r, true) ? null : r; |
| 2993 | } else { |
| 2994 | // Need to go through the full pause cycle to get this |
| 2995 | // activity into the stopped state and then finish it. |
| 2996 | if (localLOGV) Slog.v(TAG, "Enqueueing pending finish: " + r); |
| 2997 | mFinishingActivities.add(r); |
| 2998 | resumeTopActivityLocked(null); |
| 2999 | } |
| 3000 | return r; |
| 3001 | } |
| 3002 | |
| 3003 | /** |
| 3004 | * Perform the common clean-up of an activity record. This is called both |
| 3005 | * as part of destroyActivityLocked() (when destroying the client-side |
| 3006 | * representation) and cleaning things up as a result of its hosting |
| 3007 | * processing going away, in which case there is no remaining client-side |
| 3008 | * state to destroy so only the cleanup here is needed. |
| 3009 | */ |
| 3010 | final void cleanUpActivityLocked(ActivityRecord r, boolean cleanServices) { |
| 3011 | if (mResumedActivity == r) { |
| 3012 | mResumedActivity = null; |
| 3013 | } |
| 3014 | if (mService.mFocusedActivity == r) { |
| 3015 | mService.mFocusedActivity = null; |
| 3016 | } |
| 3017 | |
| 3018 | r.configDestroy = false; |
| 3019 | r.frozenBeforeDestroy = false; |
| 3020 | |
| 3021 | // Make sure this record is no longer in the pending finishes list. |
| 3022 | // This could happen, for example, if we are trimming activities |
| 3023 | // down to the max limit while they are still waiting to finish. |
| 3024 | mFinishingActivities.remove(r); |
| 3025 | mWaitingVisibleActivities.remove(r); |
| 3026 | |
| 3027 | // Remove any pending results. |
| 3028 | if (r.finishing && r.pendingResults != null) { |
| 3029 | for (WeakReference<PendingIntentRecord> apr : r.pendingResults) { |
| 3030 | PendingIntentRecord rec = apr.get(); |
| 3031 | if (rec != null) { |
| 3032 | mService.cancelIntentSenderLocked(rec, false); |
| 3033 | } |
| 3034 | } |
| 3035 | r.pendingResults = null; |
| 3036 | } |
| 3037 | |
| 3038 | if (cleanServices) { |
| 3039 | cleanUpActivityServicesLocked(r); |
| 3040 | } |
| 3041 | |
| 3042 | if (mService.mPendingThumbnails.size() > 0) { |
| 3043 | // There are clients waiting to receive thumbnails so, in case |
| 3044 | // this is an activity that someone is waiting for, add it |
| 3045 | // to the pending list so we can correctly update the clients. |
| 3046 | mService.mCancelledThumbnails.add(r); |
| 3047 | } |
| 3048 | |
| 3049 | // Get rid of any pending idle timeouts. |
| 3050 | mHandler.removeMessages(PAUSE_TIMEOUT_MSG, r); |
| 3051 | mHandler.removeMessages(IDLE_TIMEOUT_MSG, r); |
| 3052 | } |
| 3053 | |
| 3054 | private final void removeActivityFromHistoryLocked(ActivityRecord r) { |
| 3055 | if (r.state != ActivityState.DESTROYED) { |
| 3056 | mHistory.remove(r); |
| 3057 | r.inHistory = false; |
| 3058 | r.state = ActivityState.DESTROYED; |
| 3059 | mService.mWindowManager.removeAppToken(r); |
| 3060 | if (VALIDATE_TOKENS) { |
| 3061 | mService.mWindowManager.validateAppTokens(mHistory); |
| 3062 | } |
| 3063 | cleanUpActivityServicesLocked(r); |
| 3064 | r.removeUriPermissionsLocked(); |
| 3065 | } |
| 3066 | } |
| 3067 | |
| 3068 | /** |
| 3069 | * Perform clean-up of service connections in an activity record. |
| 3070 | */ |
| 3071 | final void cleanUpActivityServicesLocked(ActivityRecord r) { |
| 3072 | // Throw away any services that have been bound by this activity. |
| 3073 | if (r.connections != null) { |
| 3074 | Iterator<ConnectionRecord> it = r.connections.iterator(); |
| 3075 | while (it.hasNext()) { |
| 3076 | ConnectionRecord c = it.next(); |
| 3077 | mService.removeConnectionLocked(c, null, r); |
| 3078 | } |
| 3079 | r.connections = null; |
| 3080 | } |
| 3081 | } |
| 3082 | |
| 3083 | /** |
| 3084 | * Destroy the current CLIENT SIDE instance of an activity. This may be |
| 3085 | * called both when actually finishing an activity, or when performing |
| 3086 | * a configuration switch where we destroy the current client-side object |
| 3087 | * but then create a new client-side object for this same HistoryRecord. |
| 3088 | */ |
| 3089 | final boolean destroyActivityLocked(ActivityRecord r, |
| 3090 | boolean removeFromApp) { |
| 3091 | if (DEBUG_SWITCH) Slog.v( |
| 3092 | TAG, "Removing activity: token=" + r |
| 3093 | + ", app=" + (r.app != null ? r.app.processName : "(null)")); |
| 3094 | EventLog.writeEvent(EventLogTags.AM_DESTROY_ACTIVITY, |
| 3095 | System.identityHashCode(r), |
| 3096 | r.task.taskId, r.shortComponentName); |
| 3097 | |
| 3098 | boolean removedFromHistory = false; |
| 3099 | |
| 3100 | cleanUpActivityLocked(r, false); |
| 3101 | |
| 3102 | final boolean hadApp = r.app != null; |
| 3103 | |
| 3104 | if (hadApp) { |
| 3105 | if (removeFromApp) { |
| 3106 | int idx = r.app.activities.indexOf(r); |
| 3107 | if (idx >= 0) { |
| 3108 | r.app.activities.remove(idx); |
| 3109 | } |
| 3110 | if (mService.mHeavyWeightProcess == r.app && r.app.activities.size() <= 0) { |
| 3111 | mService.mHeavyWeightProcess = null; |
| 3112 | mService.mHandler.sendEmptyMessage( |
| 3113 | ActivityManagerService.CANCEL_HEAVY_NOTIFICATION_MSG); |
| 3114 | } |
| 3115 | if (r.persistent) { |
| 3116 | mService.decPersistentCountLocked(r.app); |
| 3117 | } |
| 3118 | if (r.app.activities.size() == 0) { |
| 3119 | // No longer have activities, so update location in |
| 3120 | // LRU list. |
| 3121 | mService.updateLruProcessLocked(r.app, true, false); |
| 3122 | } |
| 3123 | } |
| 3124 | |
| 3125 | boolean skipDestroy = false; |
| 3126 | |
| 3127 | try { |
| 3128 | if (DEBUG_SWITCH) Slog.i(TAG, "Destroying: " + r); |
| 3129 | r.app.thread.scheduleDestroyActivity(r, r.finishing, |
| 3130 | r.configChangeFlags); |
| 3131 | } catch (Exception e) { |
| 3132 | // We can just ignore exceptions here... if the process |
| 3133 | // has crashed, our death notification will clean things |
| 3134 | // up. |
| 3135 | //Slog.w(TAG, "Exception thrown during finish", e); |
| 3136 | if (r.finishing) { |
| 3137 | removeActivityFromHistoryLocked(r); |
| 3138 | removedFromHistory = true; |
| 3139 | skipDestroy = true; |
| 3140 | } |
| 3141 | } |
| 3142 | |
| 3143 | r.app = null; |
| 3144 | r.nowVisible = false; |
| 3145 | |
| 3146 | if (r.finishing && !skipDestroy) { |
| 3147 | r.state = ActivityState.DESTROYING; |
| 3148 | Message msg = mHandler.obtainMessage(DESTROY_TIMEOUT_MSG); |
| 3149 | msg.obj = r; |
| 3150 | mHandler.sendMessageDelayed(msg, DESTROY_TIMEOUT); |
| 3151 | } else { |
| 3152 | r.state = ActivityState.DESTROYED; |
| 3153 | } |
| 3154 | } else { |
| 3155 | // remove this record from the history. |
| 3156 | if (r.finishing) { |
| 3157 | removeActivityFromHistoryLocked(r); |
| 3158 | removedFromHistory = true; |
| 3159 | } else { |
| 3160 | r.state = ActivityState.DESTROYED; |
| 3161 | } |
| 3162 | } |
| 3163 | |
| 3164 | r.configChangeFlags = 0; |
| 3165 | |
| 3166 | if (!mLRUActivities.remove(r) && hadApp) { |
| 3167 | Slog.w(TAG, "Activity " + r + " being finished, but not in LRU list"); |
| 3168 | } |
| 3169 | |
| 3170 | return removedFromHistory; |
| 3171 | } |
| 3172 | |
| 3173 | final void activityDestroyed(IBinder token) { |
| 3174 | synchronized (mService) { |
| 3175 | mHandler.removeMessages(DESTROY_TIMEOUT_MSG, token); |
| 3176 | |
| 3177 | int index = indexOfTokenLocked(token); |
| 3178 | if (index >= 0) { |
| 3179 | ActivityRecord r = (ActivityRecord)mHistory.get(index); |
| 3180 | if (r.state == ActivityState.DESTROYING) { |
| 3181 | final long origId = Binder.clearCallingIdentity(); |
| 3182 | removeActivityFromHistoryLocked(r); |
| 3183 | Binder.restoreCallingIdentity(origId); |
| 3184 | } |
| 3185 | } |
| 3186 | } |
| 3187 | } |
| 3188 | |
| 3189 | private static void removeHistoryRecordsForAppLocked(ArrayList list, ProcessRecord app) { |
| 3190 | int i = list.size(); |
| 3191 | if (localLOGV) Slog.v( |
| 3192 | TAG, "Removing app " + app + " from list " + list |
| 3193 | + " with " + i + " entries"); |
| 3194 | while (i > 0) { |
| 3195 | i--; |
| 3196 | ActivityRecord r = (ActivityRecord)list.get(i); |
| 3197 | if (localLOGV) Slog.v( |
| 3198 | TAG, "Record #" + i + " " + r + ": app=" + r.app); |
| 3199 | if (r.app == app) { |
| 3200 | if (localLOGV) Slog.v(TAG, "Removing this entry!"); |
| 3201 | list.remove(i); |
| 3202 | } |
| 3203 | } |
| 3204 | } |
| 3205 | |
| 3206 | void removeHistoryRecordsForAppLocked(ProcessRecord app) { |
| 3207 | removeHistoryRecordsForAppLocked(mLRUActivities, app); |
| 3208 | removeHistoryRecordsForAppLocked(mStoppingActivities, app); |
| 3209 | removeHistoryRecordsForAppLocked(mWaitingVisibleActivities, app); |
| 3210 | removeHistoryRecordsForAppLocked(mFinishingActivities, app); |
| 3211 | } |
| 3212 | |
| 3213 | final void moveTaskToFrontLocked(TaskRecord tr, ActivityRecord reason) { |
| 3214 | if (DEBUG_SWITCH) Slog.v(TAG, "moveTaskToFront: " + tr); |
| 3215 | |
| 3216 | final int task = tr.taskId; |
| 3217 | int top = mHistory.size()-1; |
| 3218 | |
| 3219 | if (top < 0 || ((ActivityRecord)mHistory.get(top)).task.taskId == task) { |
| 3220 | // nothing to do! |
| 3221 | return; |
| 3222 | } |
| 3223 | |
| 3224 | ArrayList moved = new ArrayList(); |
| 3225 | |
| 3226 | // Applying the affinities may have removed entries from the history, |
| 3227 | // so get the size again. |
| 3228 | top = mHistory.size()-1; |
| 3229 | int pos = top; |
| 3230 | |
| 3231 | // Shift all activities with this task up to the top |
| 3232 | // of the stack, keeping them in the same internal order. |
| 3233 | while (pos >= 0) { |
| 3234 | ActivityRecord r = (ActivityRecord)mHistory.get(pos); |
| 3235 | if (localLOGV) Slog.v( |
| 3236 | TAG, "At " + pos + " ckp " + r.task + ": " + r); |
| 3237 | boolean first = true; |
| 3238 | if (r.task.taskId == task) { |
| 3239 | if (localLOGV) Slog.v(TAG, "Removing and adding at " + top); |
| 3240 | mHistory.remove(pos); |
| 3241 | mHistory.add(top, r); |
| 3242 | moved.add(0, r); |
| 3243 | top--; |
| 3244 | if (first && mMainStack) { |
| 3245 | mService.addRecentTaskLocked(r.task); |
| 3246 | first = false; |
| 3247 | } |
| 3248 | } |
| 3249 | pos--; |
| 3250 | } |
| 3251 | |
| 3252 | if (DEBUG_TRANSITION) Slog.v(TAG, |
| 3253 | "Prepare to front transition: task=" + tr); |
| 3254 | if (reason != null && |
| 3255 | (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { |
| 3256 | mService.mWindowManager.prepareAppTransition(WindowManagerPolicy.TRANSIT_NONE); |
| 3257 | ActivityRecord r = topRunningActivityLocked(null); |
| 3258 | if (r != null) { |
| 3259 | mNoAnimActivities.add(r); |
| 3260 | } |
| 3261 | } else { |
| 3262 | mService.mWindowManager.prepareAppTransition(WindowManagerPolicy.TRANSIT_TASK_TO_FRONT); |
| 3263 | } |
| 3264 | |
| 3265 | mService.mWindowManager.moveAppTokensToTop(moved); |
| 3266 | if (VALIDATE_TOKENS) { |
| 3267 | mService.mWindowManager.validateAppTokens(mHistory); |
| 3268 | } |
| 3269 | |
| 3270 | finishTaskMoveLocked(task); |
| 3271 | EventLog.writeEvent(EventLogTags.AM_TASK_TO_FRONT, task); |
| 3272 | } |
| 3273 | |
| 3274 | private final void finishTaskMoveLocked(int task) { |
| 3275 | resumeTopActivityLocked(null); |
| 3276 | } |
| 3277 | |
| 3278 | /** |
| 3279 | * Worker method for rearranging history stack. Implements the function of moving all |
| 3280 | * activities for a specific task (gathering them if disjoint) into a single group at the |
| 3281 | * bottom of the stack. |
| 3282 | * |
| 3283 | * If a watcher is installed, the action is preflighted and the watcher has an opportunity |
| 3284 | * to premeptively cancel the move. |
| 3285 | * |
| 3286 | * @param task The taskId to collect and move to the bottom. |
| 3287 | * @return Returns true if the move completed, false if not. |
| 3288 | */ |
| 3289 | final boolean moveTaskToBackLocked(int task, ActivityRecord reason) { |
| 3290 | Slog.i(TAG, "moveTaskToBack: " + task); |
| 3291 | |
| 3292 | // If we have a watcher, preflight the move before committing to it. First check |
| 3293 | // for *other* available tasks, but if none are available, then try again allowing the |
| 3294 | // current task to be selected. |
| 3295 | if (mMainStack && mService.mController != null) { |
| 3296 | ActivityRecord next = topRunningActivityLocked(null, task); |
| 3297 | if (next == null) { |
| 3298 | next = topRunningActivityLocked(null, 0); |
| 3299 | } |
| 3300 | if (next != null) { |
| 3301 | // ask watcher if this is allowed |
| 3302 | boolean moveOK = true; |
| 3303 | try { |
| 3304 | moveOK = mService.mController.activityResuming(next.packageName); |
| 3305 | } catch (RemoteException e) { |
| 3306 | mService.mController = null; |
| 3307 | } |
| 3308 | if (!moveOK) { |
| 3309 | return false; |
| 3310 | } |
| 3311 | } |
| 3312 | } |
| 3313 | |
| 3314 | ArrayList moved = new ArrayList(); |
| 3315 | |
| 3316 | if (DEBUG_TRANSITION) Slog.v(TAG, |
| 3317 | "Prepare to back transition: task=" + task); |
| 3318 | |
| 3319 | final int N = mHistory.size(); |
| 3320 | int bottom = 0; |
| 3321 | int pos = 0; |
| 3322 | |
| 3323 | // Shift all activities with this task down to the bottom |
| 3324 | // of the stack, keeping them in the same internal order. |
| 3325 | while (pos < N) { |
| 3326 | ActivityRecord r = (ActivityRecord)mHistory.get(pos); |
| 3327 | if (localLOGV) Slog.v( |
| 3328 | TAG, "At " + pos + " ckp " + r.task + ": " + r); |
| 3329 | if (r.task.taskId == task) { |
| 3330 | if (localLOGV) Slog.v(TAG, "Removing and adding at " + (N-1)); |
| 3331 | mHistory.remove(pos); |
| 3332 | mHistory.add(bottom, r); |
| 3333 | moved.add(r); |
| 3334 | bottom++; |
| 3335 | } |
| 3336 | pos++; |
| 3337 | } |
| 3338 | |
| 3339 | if (reason != null && |
| 3340 | (reason.intent.getFlags()&Intent.FLAG_ACTIVITY_NO_ANIMATION) != 0) { |
| 3341 | mService.mWindowManager.prepareAppTransition(WindowManagerPolicy.TRANSIT_NONE); |
| 3342 | ActivityRecord r = topRunningActivityLocked(null); |
| 3343 | if (r != null) { |
| 3344 | mNoAnimActivities.add(r); |
| 3345 | } |
| 3346 | } else { |
| 3347 | mService.mWindowManager.prepareAppTransition(WindowManagerPolicy.TRANSIT_TASK_TO_BACK); |
| 3348 | } |
| 3349 | mService.mWindowManager.moveAppTokensToBottom(moved); |
| 3350 | if (VALIDATE_TOKENS) { |
| 3351 | mService.mWindowManager.validateAppTokens(mHistory); |
| 3352 | } |
| 3353 | |
| 3354 | finishTaskMoveLocked(task); |
| 3355 | return true; |
| 3356 | } |
| 3357 | |
| 3358 | private final void logStartActivity(int tag, ActivityRecord r, |
| 3359 | TaskRecord task) { |
| 3360 | EventLog.writeEvent(tag, |
| 3361 | System.identityHashCode(r), task.taskId, |
| 3362 | r.shortComponentName, r.intent.getAction(), |
| 3363 | r.intent.getType(), r.intent.getDataString(), |
| 3364 | r.intent.getFlags()); |
| 3365 | } |
| 3366 | |
| 3367 | /** |
| 3368 | * Make sure the given activity matches the current configuration. Returns |
| 3369 | * false if the activity had to be destroyed. Returns true if the |
| 3370 | * configuration is the same, or the activity will remain running as-is |
| 3371 | * for whatever reason. Ensures the HistoryRecord is updated with the |
| 3372 | * correct configuration and all other bookkeeping is handled. |
| 3373 | */ |
| 3374 | final boolean ensureActivityConfigurationLocked(ActivityRecord r, |
| 3375 | int globalChanges) { |
| 3376 | if (mConfigWillChange) { |
| 3377 | if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, |
| 3378 | "Skipping config check (will change): " + r); |
| 3379 | return true; |
| 3380 | } |
| 3381 | |
| 3382 | if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, |
| 3383 | "Ensuring correct configuration: " + r); |
| 3384 | |
| 3385 | // Short circuit: if the two configurations are the exact same |
| 3386 | // object (the common case), then there is nothing to do. |
| 3387 | Configuration newConfig = mService.mConfiguration; |
| 3388 | if (r.configuration == newConfig) { |
| 3389 | if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, |
| 3390 | "Configuration unchanged in " + r); |
| 3391 | return true; |
| 3392 | } |
| 3393 | |
| 3394 | // We don't worry about activities that are finishing. |
| 3395 | if (r.finishing) { |
| 3396 | if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, |
| 3397 | "Configuration doesn't matter in finishing " + r); |
| 3398 | r.stopFreezingScreenLocked(false); |
| 3399 | return true; |
| 3400 | } |
| 3401 | |
| 3402 | // Okay we now are going to make this activity have the new config. |
| 3403 | // But then we need to figure out how it needs to deal with that. |
| 3404 | Configuration oldConfig = r.configuration; |
| 3405 | r.configuration = newConfig; |
| 3406 | |
| 3407 | // If the activity isn't currently running, just leave the new |
| 3408 | // configuration and it will pick that up next time it starts. |
| 3409 | if (r.app == null || r.app.thread == null) { |
| 3410 | if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, |
| 3411 | "Configuration doesn't matter not running " + r); |
| 3412 | r.stopFreezingScreenLocked(false); |
| 3413 | return true; |
| 3414 | } |
| 3415 | |
| 3416 | // If the activity isn't persistent, there is a chance we will |
| 3417 | // need to restart it. |
| 3418 | if (!r.persistent) { |
| 3419 | |
| 3420 | // Figure out what has changed between the two configurations. |
| 3421 | int changes = oldConfig.diff(newConfig); |
| 3422 | if (DEBUG_SWITCH || DEBUG_CONFIGURATION) { |
| 3423 | Slog.v(TAG, "Checking to restart " + r.info.name + ": changed=0x" |
| 3424 | + Integer.toHexString(changes) + ", handles=0x" |
| 3425 | + Integer.toHexString(r.info.configChanges) |
| 3426 | + ", newConfig=" + newConfig); |
| 3427 | } |
| 3428 | if ((changes&(~r.info.configChanges)) != 0) { |
| 3429 | // Aha, the activity isn't handling the change, so DIE DIE DIE. |
| 3430 | r.configChangeFlags |= changes; |
| 3431 | r.startFreezingScreenLocked(r.app, globalChanges); |
| 3432 | if (r.app == null || r.app.thread == null) { |
| 3433 | if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, |
| 3434 | "Switch is destroying non-running " + r); |
| 3435 | destroyActivityLocked(r, true); |
| 3436 | } else if (r.state == ActivityState.PAUSING) { |
| 3437 | // A little annoying: we are waiting for this activity to |
| 3438 | // finish pausing. Let's not do anything now, but just |
| 3439 | // flag that it needs to be restarted when done pausing. |
| 3440 | if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, |
| 3441 | "Switch is skipping already pausing " + r); |
| 3442 | r.configDestroy = true; |
| 3443 | return true; |
| 3444 | } else if (r.state == ActivityState.RESUMED) { |
| 3445 | // Try to optimize this case: the configuration is changing |
| 3446 | // and we need to restart the top, resumed activity. |
| 3447 | // Instead of doing the normal handshaking, just say |
| 3448 | // "restart!". |
| 3449 | if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, |
| 3450 | "Switch is restarting resumed " + r); |
| 3451 | relaunchActivityLocked(r, r.configChangeFlags, true); |
| 3452 | r.configChangeFlags = 0; |
| 3453 | } else { |
| 3454 | if (DEBUG_SWITCH || DEBUG_CONFIGURATION) Slog.v(TAG, |
| 3455 | "Switch is restarting non-resumed " + r); |
| 3456 | relaunchActivityLocked(r, r.configChangeFlags, false); |
| 3457 | r.configChangeFlags = 0; |
| 3458 | } |
| 3459 | |
| 3460 | // All done... tell the caller we weren't able to keep this |
| 3461 | // activity around. |
| 3462 | return false; |
| 3463 | } |
| 3464 | } |
| 3465 | |
| 3466 | // Default case: the activity can handle this new configuration, so |
| 3467 | // hand it over. Note that we don't need to give it the new |
| 3468 | // configuration, since we always send configuration changes to all |
| 3469 | // process when they happen so it can just use whatever configuration |
| 3470 | // it last got. |
| 3471 | if (r.app != null && r.app.thread != null) { |
| 3472 | try { |
| 3473 | if (DEBUG_CONFIGURATION) Slog.v(TAG, "Sending new config to " + r); |
| 3474 | r.app.thread.scheduleActivityConfigurationChanged(r); |
| 3475 | } catch (RemoteException e) { |
| 3476 | // If process died, whatever. |
| 3477 | } |
| 3478 | } |
| 3479 | r.stopFreezingScreenLocked(false); |
| 3480 | |
| 3481 | return true; |
| 3482 | } |
| 3483 | |
| 3484 | private final boolean relaunchActivityLocked(ActivityRecord r, |
| 3485 | int changes, boolean andResume) { |
| 3486 | List<ResultInfo> results = null; |
| 3487 | List<Intent> newIntents = null; |
| 3488 | if (andResume) { |
| 3489 | results = r.results; |
| 3490 | newIntents = r.newIntents; |
| 3491 | } |
| 3492 | if (DEBUG_SWITCH) Slog.v(TAG, "Relaunching: " + r |
| 3493 | + " with results=" + results + " newIntents=" + newIntents |
| 3494 | + " andResume=" + andResume); |
| 3495 | EventLog.writeEvent(andResume ? EventLogTags.AM_RELAUNCH_RESUME_ACTIVITY |
| 3496 | : EventLogTags.AM_RELAUNCH_ACTIVITY, System.identityHashCode(r), |
| 3497 | r.task.taskId, r.shortComponentName); |
| 3498 | |
| 3499 | r.startFreezingScreenLocked(r.app, 0); |
| 3500 | |
| 3501 | try { |
| 3502 | if (DEBUG_SWITCH) Slog.i(TAG, "Switch is restarting resumed " + r); |
| 3503 | r.app.thread.scheduleRelaunchActivity(r, results, newIntents, |
| 3504 | changes, !andResume, mService.mConfiguration); |
| 3505 | // Note: don't need to call pauseIfSleepingLocked() here, because |
| 3506 | // the caller will only pass in 'andResume' if this activity is |
| 3507 | // currently resumed, which implies we aren't sleeping. |
| 3508 | } catch (RemoteException e) { |
| 3509 | return false; |
| 3510 | } |
| 3511 | |
| 3512 | if (andResume) { |
| 3513 | r.results = null; |
| 3514 | r.newIntents = null; |
| 3515 | if (mMainStack) { |
| 3516 | mService.reportResumedActivityLocked(r); |
| 3517 | } |
| 3518 | } |
| 3519 | |
| 3520 | return true; |
| 3521 | } |
| 3522 | } |