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      1 /*
      2  * Copyright (C) 2006 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 android.os.Trace;
     20 import com.android.internal.R.styleable;
     21 import com.android.internal.app.ResolverActivity;
     22 import com.android.server.AttributeCache;
     23 import com.android.server.am.ActivityStack.ActivityState;
     24 
     25 import android.app.ActivityOptions;
     26 import android.app.ResultInfo;
     27 import android.content.ComponentName;
     28 import android.content.Intent;
     29 import android.content.pm.ActivityInfo;
     30 import android.content.pm.ApplicationInfo;
     31 import android.content.res.CompatibilityInfo;
     32 import android.content.res.Configuration;
     33 import android.graphics.Bitmap;
     34 import android.graphics.Rect;
     35 import android.os.Build;
     36 import android.os.Bundle;
     37 import android.os.IBinder;
     38 import android.os.Message;
     39 import android.os.Process;
     40 import android.os.RemoteException;
     41 import android.os.SystemClock;
     42 import android.os.UserHandle;
     43 import android.util.EventLog;
     44 import android.util.Log;
     45 import android.util.Slog;
     46 import android.util.TimeUtils;
     47 import android.view.IApplicationToken;
     48 import android.view.WindowManager;
     49 
     50 import java.io.PrintWriter;
     51 import java.lang.ref.WeakReference;
     52 import java.util.ArrayList;
     53 import java.util.HashSet;
     54 
     55 /**
     56  * An entry in the history stack, representing an activity.
     57  */
     58 final class ActivityRecord {
     59     static final String TAG = ActivityManagerService.TAG;
     60     static final boolean DEBUG_SAVED_STATE = ActivityStackSupervisor.DEBUG_SAVED_STATE;
     61     final public static String RECENTS_PACKAGE_NAME = "com.android.systemui.recent";
     62 
     63     final ActivityManagerService service; // owner
     64     final IApplicationToken.Stub appToken; // window manager token
     65     final ActivityInfo info; // all about me
     66     final int launchedFromUid; // always the uid who started the activity.
     67     final String launchedFromPackage; // always the package who started the activity.
     68     final int userId;          // Which user is this running for?
     69     final Intent intent;    // the original intent that generated us
     70     final ComponentName realActivity;  // the intent component, or target of an alias.
     71     final String shortComponentName; // the short component name of the intent
     72     final String resolvedType; // as per original caller;
     73     final String packageName; // the package implementing intent's component
     74     final String processName; // process where this component wants to run
     75     final String taskAffinity; // as per ActivityInfo.taskAffinity
     76     final boolean stateNotNeeded; // As per ActivityInfo.flags
     77     boolean fullscreen; // covers the full screen?
     78     final boolean noDisplay;  // activity is not displayed?
     79     final boolean componentSpecified;  // did caller specifiy an explicit component?
     80 
     81     static final int APPLICATION_ACTIVITY_TYPE = 0;
     82     static final int HOME_ACTIVITY_TYPE = 1;
     83     static final int RECENTS_ACTIVITY_TYPE = 2;
     84     int mActivityType;
     85 
     86     final String baseDir;   // where activity source (resources etc) located
     87     final String resDir;   // where public activity source (public resources etc) located
     88     final String dataDir;   // where activity data should go
     89     CharSequence nonLocalizedLabel;  // the label information from the package mgr.
     90     int labelRes;           // the label information from the package mgr.
     91     int icon;               // resource identifier of activity's icon.
     92     int logo;               // resource identifier of activity's logo.
     93     int theme;              // resource identifier of activity's theme.
     94     int realTheme;          // actual theme resource we will use, never 0.
     95     int windowFlags;        // custom window flags for preview window.
     96     TaskRecord task;        // the task this is in.
     97     ThumbnailHolder thumbHolder; // where our thumbnails should go.
     98     long displayStartTime;  // when we started launching this activity
     99     long fullyDrawnStartTime; // when we started launching this activity
    100     long startTime;         // last time this activity was started
    101     long lastVisibleTime;   // last time this activity became visible
    102     long cpuTimeAtResume;   // the cpu time of host process at the time of resuming activity
    103     long pauseTime;         // last time we started pausing the activity
    104     long launchTickTime;    // base time for launch tick messages
    105     Configuration configuration; // configuration activity was last running in
    106     CompatibilityInfo compat;// last used compatibility mode
    107     ActivityRecord resultTo; // who started this entry, so will get our reply
    108     final String resultWho; // additional identifier for use by resultTo.
    109     final int requestCode;  // code given by requester (resultTo)
    110     ArrayList<ResultInfo> results; // pending ActivityResult objs we have received
    111     HashSet<WeakReference<PendingIntentRecord>> pendingResults; // all pending intents for this act
    112     ArrayList<Intent> newIntents; // any pending new intents for single-top mode
    113     ActivityOptions pendingOptions; // most recently given options
    114     HashSet<ConnectionRecord> connections; // All ConnectionRecord we hold
    115     UriPermissionOwner uriPermissions; // current special URI access perms.
    116     ProcessRecord app;      // if non-null, hosting application
    117     ActivityState state;    // current state we are in
    118     Bundle  icicle;         // last saved activity state
    119     boolean frontOfTask;    // is this the root activity of its task?
    120     boolean launchFailed;   // set if a launched failed, to abort on 2nd try
    121     boolean haveState;      // have we gotten the last activity state?
    122     boolean stopped;        // is activity pause finished?
    123     boolean delayedResume;  // not yet resumed because of stopped app switches?
    124     boolean finishing;      // activity in pending finish list?
    125     boolean configDestroy;  // need to destroy due to config change?
    126     int configChangeFlags;  // which config values have changed
    127     boolean keysPaused;     // has key dispatching been paused for it?
    128     int launchMode;         // the launch mode activity attribute.
    129     boolean visible;        // does this activity's window need to be shown?
    130     boolean sleeping;       // have we told the activity to sleep?
    131     boolean waitingVisible; // true if waiting for a new act to become vis
    132     boolean nowVisible;     // is this activity's window visible?
    133     boolean thumbnailNeeded;// has someone requested a thumbnail?
    134     boolean idle;           // has the activity gone idle?
    135     boolean hasBeenLaunched;// has this activity ever been launched?
    136     boolean frozenBeforeDestroy;// has been frozen but not yet destroyed.
    137     boolean immersive;      // immersive mode (don't interrupt if possible)
    138     boolean forceNewConfig; // force re-create with new config next time
    139     int launchCount;        // count of launches since last state
    140     long lastLaunchTime;    // time of last lauch of this activity
    141 
    142     String stringName;      // for caching of toString().
    143 
    144     private boolean inHistory;  // are we in the history stack?
    145     final ActivityStackSupervisor mStackSupervisor;
    146 
    147     void dump(PrintWriter pw, String prefix) {
    148         final long now = SystemClock.uptimeMillis();
    149         pw.print(prefix); pw.print("packageName="); pw.print(packageName);
    150                 pw.print(" processName="); pw.println(processName);
    151         pw.print(prefix); pw.print("launchedFromUid="); pw.print(launchedFromUid);
    152                 pw.print(" launchedFromPackage="); pw.print(launchedFromPackage);
    153                 pw.print(" userId="); pw.println(userId);
    154         pw.print(prefix); pw.print("app="); pw.println(app);
    155         pw.print(prefix); pw.println(intent.toInsecureStringWithClip());
    156         pw.print(prefix); pw.print("frontOfTask="); pw.print(frontOfTask);
    157                 pw.print(" task="); pw.println(task);
    158         pw.print(prefix); pw.print("taskAffinity="); pw.println(taskAffinity);
    159         pw.print(prefix); pw.print("realActivity=");
    160                 pw.println(realActivity.flattenToShortString());
    161         pw.print(prefix); pw.print("baseDir="); pw.println(baseDir);
    162         if (!resDir.equals(baseDir)) {
    163             pw.print(prefix); pw.print("resDir="); pw.println(resDir);
    164         }
    165         pw.print(prefix); pw.print("dataDir="); pw.println(dataDir);
    166         pw.print(prefix); pw.print("stateNotNeeded="); pw.print(stateNotNeeded);
    167                 pw.print(" componentSpecified="); pw.print(componentSpecified);
    168                 pw.print(" mActivityType="); pw.println(mActivityType);
    169         pw.print(prefix); pw.print("compat="); pw.print(compat);
    170                 pw.print(" labelRes=0x"); pw.print(Integer.toHexString(labelRes));
    171                 pw.print(" icon=0x"); pw.print(Integer.toHexString(icon));
    172                 pw.print(" theme=0x"); pw.println(Integer.toHexString(theme));
    173         pw.print(prefix); pw.print("config="); pw.println(configuration);
    174         if (resultTo != null || resultWho != null) {
    175             pw.print(prefix); pw.print("resultTo="); pw.print(resultTo);
    176                     pw.print(" resultWho="); pw.print(resultWho);
    177                     pw.print(" resultCode="); pw.println(requestCode);
    178         }
    179         if (results != null) {
    180             pw.print(prefix); pw.print("results="); pw.println(results);
    181         }
    182         if (pendingResults != null && pendingResults.size() > 0) {
    183             pw.print(prefix); pw.println("Pending Results:");
    184             for (WeakReference<PendingIntentRecord> wpir : pendingResults) {
    185                 PendingIntentRecord pir = wpir != null ? wpir.get() : null;
    186                 pw.print(prefix); pw.print("  - ");
    187                 if (pir == null) {
    188                     pw.println("null");
    189                 } else {
    190                     pw.println(pir);
    191                     pir.dump(pw, prefix + "    ");
    192                 }
    193             }
    194         }
    195         if (newIntents != null && newIntents.size() > 0) {
    196             pw.print(prefix); pw.println("Pending New Intents:");
    197             for (int i=0; i<newIntents.size(); i++) {
    198                 Intent intent = newIntents.get(i);
    199                 pw.print(prefix); pw.print("  - ");
    200                 if (intent == null) {
    201                     pw.println("null");
    202                 } else {
    203                     pw.println(intent.toShortString(false, true, false, true));
    204                 }
    205             }
    206         }
    207         if (pendingOptions != null) {
    208             pw.print(prefix); pw.print("pendingOptions="); pw.println(pendingOptions);
    209         }
    210         if (uriPermissions != null) {
    211             if (uriPermissions.readUriPermissions != null) {
    212                 pw.print(prefix); pw.print("readUriPermissions=");
    213                         pw.println(uriPermissions.readUriPermissions);
    214             }
    215             if (uriPermissions.writeUriPermissions != null) {
    216                 pw.print(prefix); pw.print("writeUriPermissions=");
    217                         pw.println(uriPermissions.writeUriPermissions);
    218             }
    219         }
    220         pw.print(prefix); pw.print("launchFailed="); pw.print(launchFailed);
    221                 pw.print(" launchCount="); pw.print(launchCount);
    222                 pw.print(" lastLaunchTime=");
    223                 if (lastLaunchTime == 0) pw.print("0");
    224                 else TimeUtils.formatDuration(lastLaunchTime, now, pw);
    225                 pw.println();
    226         pw.print(prefix); pw.print("haveState="); pw.print(haveState);
    227                 pw.print(" icicle="); pw.println(icicle);
    228         pw.print(prefix); pw.print("state="); pw.print(state);
    229                 pw.print(" stopped="); pw.print(stopped);
    230                 pw.print(" delayedResume="); pw.print(delayedResume);
    231                 pw.print(" finishing="); pw.println(finishing);
    232         pw.print(prefix); pw.print("keysPaused="); pw.print(keysPaused);
    233                 pw.print(" inHistory="); pw.print(inHistory);
    234                 pw.print(" visible="); pw.print(visible);
    235                 pw.print(" sleeping="); pw.print(sleeping);
    236                 pw.print(" idle="); pw.println(idle);
    237         pw.print(prefix); pw.print("fullscreen="); pw.print(fullscreen);
    238                 pw.print(" noDisplay="); pw.print(noDisplay);
    239                 pw.print(" immersive="); pw.print(immersive);
    240                 pw.print(" launchMode="); pw.println(launchMode);
    241         pw.print(prefix); pw.print("frozenBeforeDestroy="); pw.print(frozenBeforeDestroy);
    242                 pw.print(" thumbnailNeeded="); pw.print(thumbnailNeeded);
    243                 pw.print(" forceNewConfig="); pw.println(forceNewConfig);
    244         pw.print(prefix); pw.print("mActivityType=");
    245                 pw.println(activityTypeToString(mActivityType));
    246         pw.print(prefix); pw.print("thumbHolder: ");
    247                 pw.print(Integer.toHexString(System.identityHashCode(thumbHolder)));
    248                 if (thumbHolder != null) {
    249                     pw.print(" bm="); pw.print(thumbHolder.lastThumbnail);
    250                     pw.print(" desc="); pw.print(thumbHolder.lastDescription);
    251                 }
    252                 pw.println();
    253         if (displayStartTime != 0 || startTime != 0) {
    254             pw.print(prefix); pw.print("displayStartTime=");
    255                     if (displayStartTime == 0) pw.print("0");
    256                     else TimeUtils.formatDuration(displayStartTime, now, pw);
    257                     pw.print(" startTime=");
    258                     if (startTime == 0) pw.print("0");
    259                     else TimeUtils.formatDuration(startTime, now, pw);
    260                     pw.println();
    261         }
    262         if (lastVisibleTime != 0 || waitingVisible || nowVisible) {
    263             pw.print(prefix); pw.print("waitingVisible="); pw.print(waitingVisible);
    264                     pw.print(" nowVisible="); pw.print(nowVisible);
    265                     pw.print(" lastVisibleTime=");
    266                     if (lastVisibleTime == 0) pw.print("0");
    267                     else TimeUtils.formatDuration(lastVisibleTime, now, pw);
    268                     pw.println();
    269         }
    270         if (configDestroy || configChangeFlags != 0) {
    271             pw.print(prefix); pw.print("configDestroy="); pw.print(configDestroy);
    272                     pw.print(" configChangeFlags=");
    273                     pw.println(Integer.toHexString(configChangeFlags));
    274         }
    275         if (connections != null) {
    276             pw.print(prefix); pw.print("connections="); pw.println(connections);
    277         }
    278     }
    279 
    280     static class Token extends IApplicationToken.Stub {
    281         final WeakReference<ActivityRecord> weakActivity;
    282 
    283         Token(ActivityRecord activity) {
    284             weakActivity = new WeakReference<ActivityRecord>(activity);
    285         }
    286 
    287         @Override public void windowsDrawn() {
    288             ActivityRecord activity = weakActivity.get();
    289             if (activity != null) {
    290                 activity.windowsDrawn();
    291             }
    292         }
    293 
    294         @Override public void windowsVisible() {
    295             ActivityRecord activity = weakActivity.get();
    296             if (activity != null) {
    297                 activity.windowsVisible();
    298             }
    299         }
    300 
    301         @Override public void windowsGone() {
    302             ActivityRecord activity = weakActivity.get();
    303             if (activity != null) {
    304                 activity.windowsGone();
    305             }
    306         }
    307 
    308         @Override public boolean keyDispatchingTimedOut(String reason) {
    309             ActivityRecord activity = weakActivity.get();
    310             return activity != null && activity.keyDispatchingTimedOut(reason);
    311         }
    312 
    313         @Override public long getKeyDispatchingTimeout() {
    314             ActivityRecord activity = weakActivity.get();
    315             if (activity != null) {
    316                 return activity.getKeyDispatchingTimeout();
    317             }
    318             return 0;
    319         }
    320 
    321         @Override
    322         public String toString() {
    323             StringBuilder sb = new StringBuilder(128);
    324             sb.append("Token{");
    325             sb.append(Integer.toHexString(System.identityHashCode(this)));
    326             sb.append(' ');
    327             sb.append(weakActivity.get());
    328             sb.append('}');
    329             return sb.toString();
    330         }
    331     }
    332 
    333     static ActivityRecord forToken(IBinder token) {
    334         try {
    335             return token != null ? ((Token)token).weakActivity.get() : null;
    336         } catch (ClassCastException e) {
    337             Slog.w(ActivityManagerService.TAG, "Bad activity token: " + token, e);
    338             return null;
    339         }
    340     }
    341 
    342     boolean isNotResolverActivity() {
    343         return !ResolverActivity.class.getName().equals(realActivity.getClassName());
    344     }
    345 
    346     ActivityRecord(ActivityManagerService _service, ProcessRecord _caller,
    347             int _launchedFromUid, String _launchedFromPackage, Intent _intent, String _resolvedType,
    348             ActivityInfo aInfo, Configuration _configuration,
    349             ActivityRecord _resultTo, String _resultWho, int _reqCode,
    350             boolean _componentSpecified, ActivityStackSupervisor supervisor) {
    351         service = _service;
    352         appToken = new Token(this);
    353         info = aInfo;
    354         launchedFromUid = _launchedFromUid;
    355         launchedFromPackage = _launchedFromPackage;
    356         userId = UserHandle.getUserId(aInfo.applicationInfo.uid);
    357         intent = _intent;
    358         shortComponentName = _intent.getComponent().flattenToShortString();
    359         resolvedType = _resolvedType;
    360         componentSpecified = _componentSpecified;
    361         configuration = _configuration;
    362         resultTo = _resultTo;
    363         resultWho = _resultWho;
    364         requestCode = _reqCode;
    365         state = ActivityState.INITIALIZING;
    366         frontOfTask = false;
    367         launchFailed = false;
    368         stopped = false;
    369         delayedResume = false;
    370         finishing = false;
    371         configDestroy = false;
    372         keysPaused = false;
    373         inHistory = false;
    374         visible = true;
    375         waitingVisible = false;
    376         nowVisible = false;
    377         thumbnailNeeded = false;
    378         idle = false;
    379         hasBeenLaunched = false;
    380         mStackSupervisor = supervisor;
    381 
    382         // This starts out true, since the initial state of an activity
    383         // is that we have everything, and we shouldn't never consider it
    384         // lacking in state to be removed if it dies.
    385         haveState = true;
    386 
    387         if (aInfo != null) {
    388             if (aInfo.targetActivity == null
    389                     || aInfo.launchMode == ActivityInfo.LAUNCH_MULTIPLE
    390                     || aInfo.launchMode == ActivityInfo.LAUNCH_SINGLE_TOP) {
    391                 realActivity = _intent.getComponent();
    392             } else {
    393                 realActivity = new ComponentName(aInfo.packageName,
    394                         aInfo.targetActivity);
    395             }
    396             taskAffinity = aInfo.taskAffinity;
    397             stateNotNeeded = (aInfo.flags&
    398                     ActivityInfo.FLAG_STATE_NOT_NEEDED) != 0;
    399             baseDir = aInfo.applicationInfo.sourceDir;
    400             resDir = aInfo.applicationInfo.publicSourceDir;
    401             dataDir = aInfo.applicationInfo.dataDir;
    402             nonLocalizedLabel = aInfo.nonLocalizedLabel;
    403             labelRes = aInfo.labelRes;
    404             if (nonLocalizedLabel == null && labelRes == 0) {
    405                 ApplicationInfo app = aInfo.applicationInfo;
    406                 nonLocalizedLabel = app.nonLocalizedLabel;
    407                 labelRes = app.labelRes;
    408             }
    409             icon = aInfo.getIconResource();
    410             logo = aInfo.getLogoResource();
    411             theme = aInfo.getThemeResource();
    412             realTheme = theme;
    413             if (realTheme == 0) {
    414                 realTheme = aInfo.applicationInfo.targetSdkVersion
    415                         < Build.VERSION_CODES.HONEYCOMB
    416                         ? android.R.style.Theme
    417                         : android.R.style.Theme_Holo;
    418             }
    419             if ((aInfo.flags&ActivityInfo.FLAG_HARDWARE_ACCELERATED) != 0) {
    420                 windowFlags |= WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
    421             }
    422             if ((aInfo.flags&ActivityInfo.FLAG_MULTIPROCESS) != 0
    423                     && _caller != null
    424                     && (aInfo.applicationInfo.uid == Process.SYSTEM_UID
    425                             || aInfo.applicationInfo.uid == _caller.info.uid)) {
    426                 processName = _caller.processName;
    427             } else {
    428                 processName = aInfo.processName;
    429             }
    430 
    431             if (intent != null && (aInfo.flags & ActivityInfo.FLAG_EXCLUDE_FROM_RECENTS) != 0) {
    432                 intent.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
    433             }
    434 
    435             packageName = aInfo.applicationInfo.packageName;
    436             launchMode = aInfo.launchMode;
    437 
    438             AttributeCache.Entry ent = AttributeCache.instance().get(packageName,
    439                     realTheme, com.android.internal.R.styleable.Window, userId);
    440             fullscreen = ent != null && !ent.array.getBoolean(
    441                     com.android.internal.R.styleable.Window_windowIsFloating, false)
    442                     && !ent.array.getBoolean(
    443                     com.android.internal.R.styleable.Window_windowIsTranslucent, false);
    444             noDisplay = ent != null && ent.array.getBoolean(
    445                     com.android.internal.R.styleable.Window_windowNoDisplay, false);
    446 
    447             if ((!_componentSpecified || _launchedFromUid == Process.myUid()
    448                     || _launchedFromUid == 0) &&
    449                     Intent.ACTION_MAIN.equals(_intent.getAction()) &&
    450                     _intent.hasCategory(Intent.CATEGORY_HOME) &&
    451                     _intent.getCategories().size() == 1 &&
    452                     _intent.getData() == null &&
    453                     _intent.getType() == null &&
    454                     (intent.getFlags()&Intent.FLAG_ACTIVITY_NEW_TASK) != 0 &&
    455                     isNotResolverActivity()) {
    456                 // This sure looks like a home activity!
    457                 mActivityType = HOME_ACTIVITY_TYPE;
    458             } else if (realActivity.getClassName().contains(RECENTS_PACKAGE_NAME)) {
    459                 mActivityType = RECENTS_ACTIVITY_TYPE;
    460             } else {
    461                 mActivityType = APPLICATION_ACTIVITY_TYPE;
    462             }
    463 
    464             immersive = (aInfo.flags & ActivityInfo.FLAG_IMMERSIVE) != 0;
    465         } else {
    466             realActivity = null;
    467             taskAffinity = null;
    468             stateNotNeeded = false;
    469             baseDir = null;
    470             resDir = null;
    471             dataDir = null;
    472             processName = null;
    473             packageName = null;
    474             fullscreen = true;
    475             noDisplay = false;
    476             mActivityType = APPLICATION_ACTIVITY_TYPE;
    477             immersive = false;
    478         }
    479     }
    480 
    481     void setTask(TaskRecord newTask, ThumbnailHolder newThumbHolder, boolean isRoot) {
    482         if (task != null && task.removeActivity(this)) {
    483             if (task != newTask) {
    484                 mStackSupervisor.removeTask(task);
    485             } else {
    486                 Slog.d(TAG, "!!! REMOVE THIS LOG !!! setTask: nearly removed stack=" +
    487                         (newTask == null ? null : newTask.stack));
    488             }
    489         }
    490         if (inHistory && !finishing) {
    491             if (task != null) {
    492                 task.numActivities--;
    493             }
    494             if (newTask != null) {
    495                 newTask.numActivities++;
    496             }
    497         }
    498         if (newThumbHolder == null) {
    499             newThumbHolder = newTask;
    500         }
    501         task = newTask;
    502         if (!isRoot && (intent.getFlags()&Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) {
    503             // This is the start of a new sub-task.
    504             if (thumbHolder == null) {
    505                 thumbHolder = new ThumbnailHolder();
    506             }
    507         } else {
    508             thumbHolder = newThumbHolder;
    509         }
    510     }
    511 
    512     boolean changeWindowTranslucency(boolean toOpaque) {
    513         if (fullscreen == toOpaque) {
    514             return false;
    515         }
    516         AttributeCache.Entry ent =
    517                 AttributeCache.instance().get(packageName, realTheme, styleable.Window, userId);
    518         if (ent == null
    519                 || !ent.array.getBoolean(styleable.Window_windowIsTranslucent, false)
    520                 || ent.array.getBoolean(styleable.Window_windowIsFloating, false)) {
    521             return false;
    522         }
    523 
    524         // Keep track of the number of fullscreen activities in this task.
    525         task.numFullscreen += toOpaque ? +1 : -1;
    526 
    527         fullscreen = toOpaque;
    528         return true;
    529     }
    530 
    531     void putInHistory() {
    532         if (!inHistory) {
    533             inHistory = true;
    534             if (task != null && !finishing) {
    535                 task.numActivities++;
    536             }
    537         }
    538     }
    539 
    540     void takeFromHistory() {
    541         if (inHistory) {
    542             inHistory = false;
    543             if (task != null && !finishing) {
    544                 task.numActivities--;
    545                 task = null;
    546             }
    547             clearOptionsLocked();
    548         }
    549     }
    550 
    551     boolean isInHistory() {
    552         return inHistory;
    553     }
    554 
    555     boolean isHomeActivity() {
    556         return mActivityType == HOME_ACTIVITY_TYPE;
    557     }
    558 
    559     boolean isRecentsActivity() {
    560         return mActivityType == RECENTS_ACTIVITY_TYPE;
    561     }
    562 
    563     boolean isApplicationActivity() {
    564         return mActivityType == APPLICATION_ACTIVITY_TYPE;
    565     }
    566 
    567     void makeFinishing() {
    568         if (!finishing) {
    569             finishing = true;
    570             if (task != null && inHistory) {
    571                 task.numActivities--;
    572             }
    573             if (stopped) {
    574                 clearOptionsLocked();
    575             }
    576         }
    577     }
    578 
    579     boolean isRootActivity() {
    580         final ArrayList<ActivityRecord> activities = task.mActivities;
    581         return activities.size() == 0 || this == activities.get(0);
    582     }
    583 
    584     UriPermissionOwner getUriPermissionsLocked() {
    585         if (uriPermissions == null) {
    586             uriPermissions = new UriPermissionOwner(service, this);
    587         }
    588         return uriPermissions;
    589     }
    590 
    591     void addResultLocked(ActivityRecord from, String resultWho,
    592             int requestCode, int resultCode,
    593             Intent resultData) {
    594         ActivityResult r = new ActivityResult(from, resultWho,
    595         		requestCode, resultCode, resultData);
    596         if (results == null) {
    597             results = new ArrayList<ResultInfo>();
    598         }
    599         results.add(r);
    600     }
    601 
    602     void removeResultsLocked(ActivityRecord from, String resultWho,
    603             int requestCode) {
    604         if (results != null) {
    605             for (int i=results.size()-1; i>=0; i--) {
    606                 ActivityResult r = (ActivityResult)results.get(i);
    607                 if (r.mFrom != from) continue;
    608                 if (r.mResultWho == null) {
    609                     if (resultWho != null) continue;
    610                 } else {
    611                     if (!r.mResultWho.equals(resultWho)) continue;
    612                 }
    613                 if (r.mRequestCode != requestCode) continue;
    614 
    615                 results.remove(i);
    616             }
    617         }
    618     }
    619 
    620     void addNewIntentLocked(Intent intent) {
    621         if (newIntents == null) {
    622             newIntents = new ArrayList<Intent>();
    623         }
    624         newIntents.add(intent);
    625     }
    626 
    627     /**
    628      * Deliver a new Intent to an existing activity, so that its onNewIntent()
    629      * method will be called at the proper time.
    630      */
    631     final void deliverNewIntentLocked(int callingUid, Intent intent) {
    632         // The activity now gets access to the data associated with this Intent.
    633         service.grantUriPermissionFromIntentLocked(callingUid, packageName,
    634                 intent, getUriPermissionsLocked());
    635         // We want to immediately deliver the intent to the activity if
    636         // it is currently the top resumed activity...  however, if the
    637         // device is sleeping, then all activities are stopped, so in that
    638         // case we will deliver it if this is the current top activity on its
    639         // stack.
    640         boolean unsent = true;
    641         if ((state == ActivityState.RESUMED || (service.mSleeping
    642                         && task.stack.topRunningActivityLocked(null) == this))
    643                 && app != null && app.thread != null) {
    644             try {
    645                 ArrayList<Intent> ar = new ArrayList<Intent>();
    646                 intent = new Intent(intent);
    647                 ar.add(intent);
    648                 app.thread.scheduleNewIntent(ar, appToken);
    649                 unsent = false;
    650             } catch (RemoteException e) {
    651                 Slog.w(ActivityManagerService.TAG,
    652                         "Exception thrown sending new intent to " + this, e);
    653             } catch (NullPointerException e) {
    654                 Slog.w(ActivityManagerService.TAG,
    655                         "Exception thrown sending new intent to " + this, e);
    656             }
    657         }
    658         if (unsent) {
    659             addNewIntentLocked(new Intent(intent));
    660         }
    661     }
    662 
    663     void updateOptionsLocked(Bundle options) {
    664         if (options != null) {
    665             if (pendingOptions != null) {
    666                 pendingOptions.abort();
    667             }
    668             pendingOptions = new ActivityOptions(options);
    669         }
    670     }
    671 
    672     void updateOptionsLocked(ActivityOptions options) {
    673         if (options != null) {
    674             if (pendingOptions != null) {
    675                 pendingOptions.abort();
    676             }
    677             pendingOptions = options;
    678         }
    679     }
    680 
    681     void applyOptionsLocked() {
    682         if (pendingOptions != null) {
    683             final int animationType = pendingOptions.getAnimationType();
    684             switch (animationType) {
    685                 case ActivityOptions.ANIM_CUSTOM:
    686                     service.mWindowManager.overridePendingAppTransition(
    687                             pendingOptions.getPackageName(),
    688                             pendingOptions.getCustomEnterResId(),
    689                             pendingOptions.getCustomExitResId(),
    690                             pendingOptions.getOnAnimationStartListener());
    691                     break;
    692                 case ActivityOptions.ANIM_SCALE_UP:
    693                     service.mWindowManager.overridePendingAppTransitionScaleUp(
    694                             pendingOptions.getStartX(), pendingOptions.getStartY(),
    695                             pendingOptions.getStartWidth(), pendingOptions.getStartHeight());
    696                     if (intent.getSourceBounds() == null) {
    697                         intent.setSourceBounds(new Rect(pendingOptions.getStartX(),
    698                                 pendingOptions.getStartY(),
    699                                 pendingOptions.getStartX()+pendingOptions.getStartWidth(),
    700                                 pendingOptions.getStartY()+pendingOptions.getStartHeight()));
    701                     }
    702                     break;
    703                 case ActivityOptions.ANIM_THUMBNAIL_SCALE_UP:
    704                 case ActivityOptions.ANIM_THUMBNAIL_SCALE_DOWN:
    705                     boolean scaleUp = (animationType == ActivityOptions.ANIM_THUMBNAIL_SCALE_UP);
    706                     service.mWindowManager.overridePendingAppTransitionThumb(
    707                             pendingOptions.getThumbnail(),
    708                             pendingOptions.getStartX(), pendingOptions.getStartY(),
    709                             pendingOptions.getOnAnimationStartListener(),
    710                             scaleUp);
    711                     if (intent.getSourceBounds() == null) {
    712                         intent.setSourceBounds(new Rect(pendingOptions.getStartX(),
    713                                 pendingOptions.getStartY(),
    714                                 pendingOptions.getStartX()
    715                                         + pendingOptions.getThumbnail().getWidth(),
    716                                 pendingOptions.getStartY()
    717                                         + pendingOptions.getThumbnail().getHeight()));
    718                     }
    719                     break;
    720             }
    721             pendingOptions = null;
    722         }
    723     }
    724 
    725     void clearOptionsLocked() {
    726         if (pendingOptions != null) {
    727             pendingOptions.abort();
    728             pendingOptions = null;
    729         }
    730     }
    731 
    732     ActivityOptions takeOptionsLocked() {
    733         ActivityOptions opts = pendingOptions;
    734         pendingOptions = null;
    735         return opts;
    736     }
    737 
    738     void removeUriPermissionsLocked() {
    739         if (uriPermissions != null) {
    740             uriPermissions.removeUriPermissionsLocked();
    741             uriPermissions = null;
    742         }
    743     }
    744 
    745     void pauseKeyDispatchingLocked() {
    746         if (!keysPaused) {
    747             keysPaused = true;
    748             service.mWindowManager.pauseKeyDispatching(appToken);
    749         }
    750     }
    751 
    752     void resumeKeyDispatchingLocked() {
    753         if (keysPaused) {
    754             keysPaused = false;
    755             service.mWindowManager.resumeKeyDispatching(appToken);
    756         }
    757     }
    758 
    759     void updateThumbnail(Bitmap newThumbnail, CharSequence description) {
    760         if (thumbHolder != null) {
    761             if (newThumbnail != null) {
    762                 if (ActivityManagerService.DEBUG_THUMBNAILS) Slog.i(ActivityManagerService.TAG,
    763                         "Setting thumbnail of " + this + " holder " + thumbHolder
    764                         + " to " + newThumbnail);
    765                 thumbHolder.lastThumbnail = newThumbnail;
    766             }
    767             thumbHolder.lastDescription = description;
    768         }
    769     }
    770 
    771     void startLaunchTickingLocked() {
    772         if (ActivityManagerService.IS_USER_BUILD) {
    773             return;
    774         }
    775         if (launchTickTime == 0) {
    776             launchTickTime = SystemClock.uptimeMillis();
    777             continueLaunchTickingLocked();
    778         }
    779     }
    780 
    781     boolean continueLaunchTickingLocked() {
    782         if (launchTickTime != 0) {
    783             final ActivityStack stack = task.stack;
    784             Message msg = stack.mHandler.obtainMessage(ActivityStack.LAUNCH_TICK_MSG, this);
    785             stack.mHandler.removeMessages(ActivityStack.LAUNCH_TICK_MSG);
    786             stack.mHandler.sendMessageDelayed(msg, ActivityStack.LAUNCH_TICK);
    787             return true;
    788         }
    789         return false;
    790     }
    791 
    792     void finishLaunchTickingLocked() {
    793         launchTickTime = 0;
    794         task.stack.mHandler.removeMessages(ActivityStack.LAUNCH_TICK_MSG);
    795     }
    796 
    797     // IApplicationToken
    798 
    799     public boolean mayFreezeScreenLocked(ProcessRecord app) {
    800         // Only freeze the screen if this activity is currently attached to
    801         // an application, and that application is not blocked or unresponding.
    802         // In any other case, we can't count on getting the screen unfrozen,
    803         // so it is best to leave as-is.
    804         return app != null && !app.crashing && !app.notResponding;
    805     }
    806 
    807     public void startFreezingScreenLocked(ProcessRecord app, int configChanges) {
    808         if (mayFreezeScreenLocked(app)) {
    809             service.mWindowManager.startAppFreezingScreen(appToken, configChanges);
    810         }
    811     }
    812 
    813     public void stopFreezingScreenLocked(boolean force) {
    814         if (force || frozenBeforeDestroy) {
    815             frozenBeforeDestroy = false;
    816             service.mWindowManager.stopAppFreezingScreen(appToken, force);
    817         }
    818     }
    819 
    820     public void reportFullyDrawnLocked() {
    821         final long curTime = SystemClock.uptimeMillis();
    822         if (displayStartTime != 0) {
    823             reportLaunchTimeLocked(curTime);
    824         }
    825         if (fullyDrawnStartTime != 0) {
    826             final ActivityStack stack = task.stack;
    827             final long thisTime = curTime - fullyDrawnStartTime;
    828             final long totalTime = stack.mFullyDrawnStartTime != 0
    829                     ? (curTime - stack.mFullyDrawnStartTime) : thisTime;
    830             if (ActivityManagerService.SHOW_ACTIVITY_START_TIME) {
    831                 Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "drawing", 0);
    832                 EventLog.writeEvent(EventLogTags.AM_ACTIVITY_FULLY_DRAWN_TIME,
    833                         userId, System.identityHashCode(this), shortComponentName,
    834                         thisTime, totalTime);
    835                 StringBuilder sb = service.mStringBuilder;
    836                 sb.setLength(0);
    837                 sb.append("Fully drawn ");
    838                 sb.append(shortComponentName);
    839                 sb.append(": ");
    840                 TimeUtils.formatDuration(thisTime, sb);
    841                 if (thisTime != totalTime) {
    842                     sb.append(" (total ");
    843                     TimeUtils.formatDuration(totalTime, sb);
    844                     sb.append(")");
    845                 }
    846                 Log.i(ActivityManagerService.TAG, sb.toString());
    847             }
    848             if (totalTime > 0) {
    849                 service.mUsageStatsService.noteFullyDrawnTime(realActivity, (int) totalTime);
    850             }
    851             fullyDrawnStartTime = 0;
    852             stack.mFullyDrawnStartTime = 0;
    853         }
    854     }
    855 
    856     private void reportLaunchTimeLocked(final long curTime) {
    857         final ActivityStack stack = task.stack;
    858         final long thisTime = curTime - displayStartTime;
    859         final long totalTime = stack.mLaunchStartTime != 0
    860                 ? (curTime - stack.mLaunchStartTime) : thisTime;
    861         if (ActivityManagerService.SHOW_ACTIVITY_START_TIME) {
    862             Trace.asyncTraceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER, "launching", 0);
    863             EventLog.writeEvent(EventLogTags.AM_ACTIVITY_LAUNCH_TIME,
    864                     userId, System.identityHashCode(this), shortComponentName,
    865                     thisTime, totalTime);
    866             StringBuilder sb = service.mStringBuilder;
    867             sb.setLength(0);
    868             sb.append("Displayed ");
    869             sb.append(shortComponentName);
    870             sb.append(": ");
    871             TimeUtils.formatDuration(thisTime, sb);
    872             if (thisTime != totalTime) {
    873                 sb.append(" (total ");
    874                 TimeUtils.formatDuration(totalTime, sb);
    875                 sb.append(")");
    876             }
    877             Log.i(ActivityManagerService.TAG, sb.toString());
    878         }
    879         mStackSupervisor.reportActivityLaunchedLocked(false, this, thisTime, totalTime);
    880         if (totalTime > 0) {
    881             service.mUsageStatsService.noteLaunchTime(realActivity, (int)totalTime);
    882         }
    883         displayStartTime = 0;
    884         stack.mLaunchStartTime = 0;
    885     }
    886 
    887     public void windowsDrawn() {
    888         synchronized(service) {
    889             if (displayStartTime != 0) {
    890                 reportLaunchTimeLocked(SystemClock.uptimeMillis());
    891             }
    892             startTime = 0;
    893             finishLaunchTickingLocked();
    894         }
    895     }
    896 
    897     public void windowsVisible() {
    898         synchronized(service) {
    899             mStackSupervisor.reportActivityVisibleLocked(this);
    900             if (ActivityManagerService.DEBUG_SWITCH) Log.v(
    901                     ActivityManagerService.TAG, "windowsVisible(): " + this);
    902             if (!nowVisible) {
    903                 nowVisible = true;
    904                 lastVisibleTime = SystemClock.uptimeMillis();
    905                 if (!idle) {
    906                     // Instead of doing the full stop routine here, let's just
    907                     // hide any activities we now can, and let them stop when
    908                     // the normal idle happens.
    909                     mStackSupervisor.processStoppingActivitiesLocked(false);
    910                 } else {
    911                     // If this activity was already idle, then we now need to
    912                     // make sure we perform the full stop of any activities
    913                     // that are waiting to do so.  This is because we won't
    914                     // do that while they are still waiting for this one to
    915                     // become visible.
    916                     final int N = mStackSupervisor.mWaitingVisibleActivities.size();
    917                     if (N > 0) {
    918                         for (int i=0; i<N; i++) {
    919                             ActivityRecord r = mStackSupervisor.mWaitingVisibleActivities.get(i);
    920                             r.waitingVisible = false;
    921                             if (ActivityManagerService.DEBUG_SWITCH) Log.v(
    922                                     ActivityManagerService.TAG,
    923                                     "Was waiting for visible: " + r);
    924                         }
    925                         mStackSupervisor.mWaitingVisibleActivities.clear();
    926                         mStackSupervisor.scheduleIdleLocked();
    927                     }
    928                 }
    929                 service.scheduleAppGcsLocked();
    930             }
    931         }
    932     }
    933 
    934     public void windowsGone() {
    935         if (ActivityManagerService.DEBUG_SWITCH) Log.v(
    936                 ActivityManagerService.TAG, "windowsGone(): " + this);
    937         nowVisible = false;
    938     }
    939 
    940     private ActivityRecord getWaitingHistoryRecordLocked() {
    941         // First find the real culprit...  if we are waiting
    942         // for another app to start, then we have paused dispatching
    943         // for this activity.
    944         ActivityRecord r = this;
    945         final ActivityStack stack = task.stack;
    946         if (r.waitingVisible) {
    947             // Hmmm, who might we be waiting for?
    948             r = stack.mResumedActivity;
    949             if (r == null) {
    950                 r = stack.mPausingActivity;
    951             }
    952             // Both of those null?  Fall back to 'this' again
    953             if (r == null) {
    954                 r = this;
    955             }
    956         }
    957 
    958         return r;
    959     }
    960 
    961     public boolean keyDispatchingTimedOut(String reason) {
    962         ActivityRecord r;
    963         ProcessRecord anrApp;
    964         synchronized(service) {
    965             r = getWaitingHistoryRecordLocked();
    966             anrApp = r != null ? r.app : null;
    967         }
    968         return service.inputDispatchingTimedOut(anrApp, r, this, false, reason);
    969     }
    970 
    971     /** Returns the key dispatching timeout for this application token. */
    972     public long getKeyDispatchingTimeout() {
    973         synchronized(service) {
    974             ActivityRecord r = getWaitingHistoryRecordLocked();
    975             return ActivityManagerService.getInputDispatchingTimeoutLocked(r);
    976         }
    977     }
    978 
    979     /**
    980      * This method will return true if the activity is either visible, is becoming visible, is
    981      * currently pausing, or is resumed.
    982      */
    983     public boolean isInterestingToUserLocked() {
    984         return visible || nowVisible || state == ActivityState.PAUSING ||
    985                 state == ActivityState.RESUMED;
    986     }
    987 
    988     public void setSleeping(boolean _sleeping) {
    989         if (sleeping == _sleeping) {
    990             return;
    991         }
    992         if (app != null && app.thread != null) {
    993             try {
    994                 app.thread.scheduleSleeping(appToken, _sleeping);
    995                 if (_sleeping && !mStackSupervisor.mGoingToSleepActivities.contains(this)) {
    996                     mStackSupervisor.mGoingToSleepActivities.add(this);
    997                 }
    998                 sleeping = _sleeping;
    999             } catch (RemoteException e) {
   1000                 Slog.w(TAG, "Exception thrown when sleeping: " + intent.getComponent(), e);
   1001             }
   1002         }
   1003     }
   1004 
   1005     static void activityResumedLocked(IBinder token) {
   1006         final ActivityRecord r = ActivityRecord.forToken(token);
   1007         if (DEBUG_SAVED_STATE) Slog.i(TAG, "Resumed activity; dropping state of: " + r);
   1008         r.icicle = null;
   1009         r.haveState = false;
   1010     }
   1011 
   1012     static int getTaskForActivityLocked(IBinder token, boolean onlyRoot) {
   1013         final ActivityRecord r = ActivityRecord.forToken(token);
   1014         if (r == null) {
   1015             return -1;
   1016         }
   1017         final TaskRecord task = r.task;
   1018         switch (task.mActivities.indexOf(r)) {
   1019             case -1: return -1;
   1020             case 0: return task.taskId;
   1021             default: return onlyRoot ? -1 : task.taskId;
   1022         }
   1023     }
   1024 
   1025     static ActivityRecord isInStackLocked(IBinder token) {
   1026         final ActivityRecord r = ActivityRecord.forToken(token);
   1027         if (r != null) {
   1028             return r.task.stack.isInStackLocked(token);
   1029         }
   1030         return null;
   1031     }
   1032 
   1033     static ActivityStack getStackLocked(IBinder token) {
   1034         final ActivityRecord r = ActivityRecord.isInStackLocked(token);
   1035         if (r != null) {
   1036             return r.task.stack;
   1037         }
   1038         return null;
   1039     }
   1040 
   1041     private String activityTypeToString(int type) {
   1042         switch (type) {
   1043             case APPLICATION_ACTIVITY_TYPE: return "APPLICATION_ACTIVITY_TYPE";
   1044             case HOME_ACTIVITY_TYPE: return "HOME_ACTIVITY_TYPE";
   1045             case RECENTS_ACTIVITY_TYPE: return "RECENTS_ACTIVITY_TYPE";
   1046             default: return Integer.toString(type);
   1047         }
   1048     }
   1049 
   1050     @Override
   1051     public String toString() {
   1052         if (stringName != null) {
   1053             return stringName + " t" + (task == null ? -1 : task.taskId) +
   1054                     (finishing ? " f}" : "}");
   1055         }
   1056         StringBuilder sb = new StringBuilder(128);
   1057         sb.append("ActivityRecord{");
   1058         sb.append(Integer.toHexString(System.identityHashCode(this)));
   1059         sb.append(" u");
   1060         sb.append(userId);
   1061         sb.append(' ');
   1062         sb.append(intent.getComponent().flattenToShortString());
   1063         stringName = sb.toString();
   1064         return toString();
   1065     }
   1066 }
   1067