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TaskRecord.javaAPI DocAndroid 5.1 API51412Thu Mar 12 22:22:42 GMT 2015com.android.server.am

TaskRecord

public final class TaskRecord extends Object

Fields Summary
static final String
ATTR_TASKID
private static final String
TAG_INTENT
private static final String
TAG_AFFINITYINTENT
static final String
ATTR_REALACTIVITY
private static final String
ATTR_ORIGACTIVITY
static final String
TAG_ACTIVITY
private static final String
ATTR_AFFINITY
private static final String
ATTR_ROOT_AFFINITY
private static final String
ATTR_ROOTHASRESET
private static final String
ATTR_AUTOREMOVERECENTS
private static final String
ATTR_ASKEDCOMPATMODE
private static final String
ATTR_USERID
private static final String
ATTR_EFFECTIVE_UID
private static final String
ATTR_TASKTYPE
private static final String
ATTR_FIRSTACTIVETIME
private static final String
ATTR_LASTACTIVETIME
private static final String
ATTR_LASTDESCRIPTION
private static final String
ATTR_LASTTIMEMOVED
private static final String
ATTR_NEVERRELINQUISH
static final String
ATTR_TASK_AFFILIATION
private static final String
ATTR_PREV_AFFILIATION
private static final String
ATTR_NEXT_AFFILIATION
private static final String
ATTR_TASK_AFFILIATION_COLOR
private static final String
ATTR_CALLING_UID
private static final String
ATTR_CALLING_PACKAGE
private static final String
TASK_THUMBNAIL_SUFFIX
static final boolean
IGNORE_RETURN_TO_RECENTS
static final int
INVALID_TASK_ID
final int
taskId
String
affinity
String
rootAffinity
final android.service.voice.IVoiceInteractionSession
voiceSession
final com.android.internal.app.IVoiceInteractor
voiceInteractor
android.content.Intent
intent
android.content.Intent
affinityIntent
int
effectiveUid
android.content.ComponentName
origActivity
android.content.ComponentName
realActivity
long
firstActiveTime
long
lastActiveTime
boolean
inRecents
boolean
isAvailable
boolean
rootWasReset
boolean
autoRemoveRecents
boolean
askedCompatMode
boolean
hasBeenVisible
String
stringName
int
userId
int
creatorUid
int
numFullscreen
android.app.ActivityManager.TaskDescription
lastTaskDescription
final ArrayList
mActivities
List of all activities in the task arranged in history order
ActivityStack
stack
Current stack
int
taskType
Takes on same set of values as ActivityRecord.mActivityType
boolean
isPersistable
Takes on same value as first root activity
int
maxRecents
long
mLastTimeMoved
Only used for persistable tasks, otherwise 0. The last time this task was moved. Used for determining the order when restoring. Sign indicates whether last task movement was to front (positive) or back (negative). Absolute value indicates time.
private int
mTaskToReturnTo
Indication of what to run next when task exits. Use ActivityRecord types. ActivityRecord.APPLICATION_ACTIVITY_TYPE indicates to resume the task below this one in the task stack.
boolean
mNeverRelinquishIdentity
If original intent did not allow relinquishing task identity, save that information
boolean
mReuseTask
private android.graphics.Bitmap
mLastThumbnail
private final File
mLastThumbnailFile
private final String
mFilename
CharSequence
lastDescription
int
mAffiliatedTaskId
int
mAffiliatedTaskColor
TaskRecord
mPrevAffiliate
int
mPrevAffiliateTaskId
TaskRecord
mNextAffiliate
int
mNextAffiliateTaskId
int
mCallingUid
String
mCallingPackage
final ActivityManagerService
mService
Constructors Summary
TaskRecord(ActivityManagerService service, int _taskId, android.content.pm.ActivityInfo info, android.content.Intent _intent, android.service.voice.IVoiceInteractionSession _voiceSession, com.android.internal.app.IVoiceInteractor _voiceInteractor)


           
                
        mService = service;
        mFilename = String.valueOf(_taskId) + TASK_THUMBNAIL_SUFFIX +
                TaskPersister.IMAGE_EXTENSION;
        mLastThumbnailFile = new File(TaskPersister.sImagesDir, mFilename);
        taskId = _taskId;
        mAffiliatedTaskId = _taskId;
        voiceSession = _voiceSession;
        voiceInteractor = _voiceInteractor;
        isAvailable = true;
        mActivities = new ArrayList<ActivityRecord>();
        setIntent(_intent, info);
TaskRecord(ActivityManagerService service, int _taskId, android.content.pm.ActivityInfo info, android.content.Intent _intent, android.app.ActivityManager.TaskDescription _taskDescription)

        mService = service;
        mFilename = String.valueOf(_taskId) + TASK_THUMBNAIL_SUFFIX +
                TaskPersister.IMAGE_EXTENSION;
        mLastThumbnailFile = new File(TaskPersister.sImagesDir, mFilename);
        taskId = _taskId;
        mAffiliatedTaskId = _taskId;
        voiceSession = null;
        voiceInteractor = null;
        isAvailable = true;
        mActivities = new ArrayList<ActivityRecord>();
        setIntent(_intent, info);

        taskType = ActivityRecord.APPLICATION_ACTIVITY_TYPE;
        isPersistable = true;
        mCallingUid = info.applicationInfo.uid;
        mCallingPackage = info.packageName;
        // Clamp to [1, max].
        maxRecents = Math.min(Math.max(info.maxRecents, 1),
                ActivityManager.getMaxAppRecentsLimitStatic());

        taskType = APPLICATION_ACTIVITY_TYPE;
        mTaskToReturnTo = HOME_ACTIVITY_TYPE;
        userId = UserHandle.getUserId(info.applicationInfo.uid);
        lastTaskDescription = _taskDescription;
        mCallingUid = info.applicationInfo.uid;
        mCallingPackage = info.packageName;
TaskRecord(ActivityManagerService service, int _taskId, android.content.Intent _intent, android.content.Intent _affinityIntent, String _affinity, String _rootAffinity, android.content.ComponentName _realActivity, android.content.ComponentName _origActivity, boolean _rootWasReset, boolean _autoRemoveRecents, boolean _askedCompatMode, int _taskType, int _userId, int _effectiveUid, String _lastDescription, ArrayList activities, long _firstActiveTime, long _lastActiveTime, long lastTimeMoved, boolean neverRelinquishIdentity, android.app.ActivityManager.TaskDescription _lastTaskDescription, int taskAffiliation, int prevTaskId, int nextTaskId, int taskAffiliationColor, int callingUid, String callingPackage)

        mService = service;
        mFilename = String.valueOf(_taskId) + TASK_THUMBNAIL_SUFFIX +
                TaskPersister.IMAGE_EXTENSION;
        mLastThumbnailFile = new File(TaskPersister.sImagesDir, mFilename);
        taskId = _taskId;
        intent = _intent;
        affinityIntent = _affinityIntent;
        affinity = _affinity;
        rootAffinity = _affinity;
        voiceSession = null;
        voiceInteractor = null;
        realActivity = _realActivity;
        origActivity = _origActivity;
        rootWasReset = _rootWasReset;
        isAvailable = true;
        autoRemoveRecents = _autoRemoveRecents;
        askedCompatMode = _askedCompatMode;
        taskType = _taskType;
        mTaskToReturnTo = HOME_ACTIVITY_TYPE;
        userId = _userId;
        effectiveUid = _effectiveUid;
        firstActiveTime = _firstActiveTime;
        lastActiveTime = _lastActiveTime;
        lastDescription = _lastDescription;
        mActivities = activities;
        mLastTimeMoved = lastTimeMoved;
        mNeverRelinquishIdentity = neverRelinquishIdentity;
        lastTaskDescription = _lastTaskDescription;
        mAffiliatedTaskId = taskAffiliation;
        mAffiliatedTaskColor = taskAffiliationColor;
        mPrevAffiliateTaskId = prevTaskId;
        mNextAffiliateTaskId = nextTaskId;
        mCallingUid = callingUid;
        mCallingPackage = callingPackage;
Methods Summary
voidaddActivityAtBottom(ActivityRecord r)

        addActivityAtIndex(0, r);
voidaddActivityAtIndex(int index, ActivityRecord r)

        // Remove r first, and if it wasn't already in the list and it's fullscreen, count it.
        if (!mActivities.remove(r) && r.fullscreen) {
            // Was not previously in list.
            numFullscreen++;
        }
        // Only set this based on the first activity
        if (mActivities.isEmpty()) {
            taskType = r.mActivityType;
            isPersistable = r.isPersistable();
            mCallingUid = r.launchedFromUid;
            mCallingPackage = r.launchedFromPackage;
            // Clamp to [1, max].
            maxRecents = Math.min(Math.max(r.info.maxRecents, 1),
                    ActivityManager.getMaxAppRecentsLimitStatic());
        } else {
            // Otherwise make all added activities match this one.
            r.mActivityType = taskType;
        }
        mActivities.add(index, r);
        updateEffectiveIntent();
        if (r.isPersistable()) {
            mService.notifyTaskPersisterLocked(this, false);
        }
voidaddActivityToTop(ActivityRecord r)

        addActivityAtIndex(mActivities.size(), r);
booleanautoRemoveFromRecents()

        // We will automatically remove the task either if it has explicitly asked for
        // this, or it is empty and has never contained an activity that got shown to
        // the user.
        return autoRemoveRecents || (mActivities.isEmpty() && !hasBeenVisible);
voidcloseRecentsChain()

        if (mPrevAffiliate != null) {
            mPrevAffiliate.setNextAffiliate(mNextAffiliate);
        }
        if (mNextAffiliate != null) {
            mNextAffiliate.setPrevAffiliate(mPrevAffiliate);
        }
        setPrevAffiliate(null);
        setNextAffiliate(null);
voiddisposeThumbnail()

        mLastThumbnail = null;
        lastDescription = null;
voiddump(java.io.PrintWriter pw, java.lang.String prefix)

        pw.print(prefix); pw.print("userId="); pw.print(userId);
                pw.print(" effectiveUid="); UserHandle.formatUid(pw, effectiveUid);
                pw.print(" mCallingUid="); UserHandle.formatUid(pw, mCallingUid);
                pw.print(" mCallingPackage="); pw.println(mCallingPackage);
        if (affinity != null || rootAffinity != null) {
            pw.print(prefix); pw.print("affinity="); pw.print(affinity);
            if (affinity == null || !affinity.equals(rootAffinity)) {
                pw.print(" root="); pw.println(rootAffinity);
            } else {
                pw.println();
            }
        }
        if (voiceSession != null || voiceInteractor != null) {
            pw.print(prefix); pw.print("VOICE: session=0x");
            pw.print(Integer.toHexString(System.identityHashCode(voiceSession)));
            pw.print(" interactor=0x");
            pw.println(Integer.toHexString(System.identityHashCode(voiceInteractor)));
        }
        if (intent != null) {
            StringBuilder sb = new StringBuilder(128);
            sb.append(prefix); sb.append("intent={");
            intent.toShortString(sb, false, true, false, true);
            sb.append('}");
            pw.println(sb.toString());
        }
        if (affinityIntent != null) {
            StringBuilder sb = new StringBuilder(128);
            sb.append(prefix); sb.append("affinityIntent={");
            affinityIntent.toShortString(sb, false, true, false, true);
            sb.append('}");
            pw.println(sb.toString());
        }
        if (origActivity != null) {
            pw.print(prefix); pw.print("origActivity=");
            pw.println(origActivity.flattenToShortString());
        }
        if (realActivity != null) {
            pw.print(prefix); pw.print("realActivity=");
            pw.println(realActivity.flattenToShortString());
        }
        if (autoRemoveRecents || isPersistable || taskType != 0 || mTaskToReturnTo != 0
                || numFullscreen != 0) {
            pw.print(prefix); pw.print("autoRemoveRecents="); pw.print(autoRemoveRecents);
                    pw.print(" isPersistable="); pw.print(isPersistable);
                    pw.print(" numFullscreen="); pw.print(numFullscreen);
                    pw.print(" taskType="); pw.print(taskType);
                    pw.print(" mTaskToReturnTo="); pw.println(mTaskToReturnTo);
        }
        if (rootWasReset || mNeverRelinquishIdentity || mReuseTask) {
            pw.print(prefix); pw.print("rootWasReset="); pw.print(rootWasReset);
                    pw.print(" mNeverRelinquishIdentity="); pw.print(mNeverRelinquishIdentity);
                    pw.print(" mReuseTask="); pw.println(mReuseTask);
        }
        if (mAffiliatedTaskId != taskId || mPrevAffiliateTaskId != INVALID_TASK_ID
                || mPrevAffiliate != null || mNextAffiliateTaskId != INVALID_TASK_ID
                || mNextAffiliate != null) {
            pw.print(prefix); pw.print("affiliation="); pw.print(mAffiliatedTaskId);
                    pw.print(" prevAffiliation="); pw.print(mPrevAffiliateTaskId);
                    pw.print(" (");
                    if (mPrevAffiliate == null) {
                        pw.print("null");
                    } else {
                        pw.print(Integer.toHexString(System.identityHashCode(mPrevAffiliate)));
                    }
                    pw.print(") nextAffiliation="); pw.print(mNextAffiliateTaskId);
                    pw.print(" (");
                    if (mNextAffiliate == null) {
                        pw.print("null");
                    } else {
                        pw.print(Integer.toHexString(System.identityHashCode(mNextAffiliate)));
                    }
                    pw.println(")");
        }
        pw.print(prefix); pw.print("Activities="); pw.println(mActivities);
        if (!askedCompatMode || !inRecents || !isAvailable) {
            pw.print(prefix); pw.print("askedCompatMode="); pw.print(askedCompatMode);
                    pw.print(" inRecents="); pw.print(inRecents);
                    pw.print(" isAvailable="); pw.println(isAvailable);
        }
        pw.print(prefix); pw.print("lastThumbnail="); pw.print(mLastThumbnail);
                pw.print(" lastThumbnailFile="); pw.println(mLastThumbnailFile);
        if (lastDescription != null) {
            pw.print(prefix); pw.print("lastDescription="); pw.println(lastDescription);
        }
        pw.print(prefix); pw.print("hasBeenVisible="); pw.print(hasBeenVisible);
                pw.print(" firstActiveTime="); pw.print(lastActiveTime);
                pw.print(" lastActiveTime="); pw.print(lastActiveTime);
                pw.print(" (inactive for ");
                pw.print((getInactiveDuration()/1000)); pw.println("s)");
final ActivityRecordfindActivityInHistoryLocked(ActivityRecord r)
Find the activity in the history stack within the given task. Returns the index within the history at which it's found, or < 0 if not found.

        final ComponentName realActivity = r.realActivity;
        for (int activityNdx = mActivities.size() - 1; activityNdx >= 0; --activityNdx) {
            ActivityRecord candidate = mActivities.get(activityNdx);
            if (candidate.finishing) {
                continue;
            }
            if (candidate.realActivity.equals(realActivity)) {
                return candidate;
            }
        }
        return null;
intfindEffectiveRootIndex()

        int effectiveNdx = 0;
        final int topActivityNdx = mActivities.size() - 1;
        for (int activityNdx = 0; activityNdx <= topActivityNdx; ++activityNdx) {
            final ActivityRecord r = mActivities.get(activityNdx);
            if (r.finishing) {
                continue;
            }
            effectiveNdx = activityNdx;
            if ((r.info.flags & ActivityInfo.FLAG_RELINQUISH_TASK_IDENTITY) == 0) {
                break;
            }
        }
        return effectiveNdx;
voidfreeLastThumbnail()

        mLastThumbnail = null;
android.content.IntentgetBaseIntent()
Returns the intent for the root activity for this task

        return intent != null ? intent : affinityIntent;
longgetInactiveDuration()

        return System.currentTimeMillis() - lastActiveTime;
voidgetLastThumbnail(android.app.ActivityManager.TaskThumbnail thumbs)

        thumbs.mainThumbnail = mLastThumbnail;
        thumbs.thumbnailFileDescriptor = null;
        if (mLastThumbnail == null) {
            thumbs.mainThumbnail = mService.mTaskPersister.getImageFromWriteQueue(mFilename);
        }
        // Only load the thumbnail file if we don't have a thumbnail
        if (thumbs.mainThumbnail == null && mLastThumbnailFile.exists()) {
            try {
                thumbs.thumbnailFileDescriptor = ParcelFileDescriptor.open(mLastThumbnailFile,
                        ParcelFileDescriptor.MODE_READ_ONLY);
            } catch (IOException e) {
            }
        }
ActivityRecordgetRootActivity()
Returns the first non-finishing activity from the root.

        for (int i = 0; i < mActivities.size(); i++) {
            final ActivityRecord r = mActivities.get(i);
            if (r.finishing) {
                continue;
            }
            return r;
        }
        return null;
public android.app.ActivityManager.TaskThumbnailgetTaskThumbnailLocked()

        if (stack != null) {
            final ActivityRecord resumedActivity = stack.mResumedActivity;
            if (resumedActivity != null && resumedActivity.task == this) {
                final Bitmap thumbnail = stack.screenshotActivities(resumedActivity);
                setLastThumbnail(thumbnail);
            }
        }
        final TaskThumbnail taskThumbnail = new TaskThumbnail();
        getLastThumbnail(taskThumbnail);
        return taskThumbnail;
intgetTaskToReturnTo()

        return mTaskToReturnTo;
ActivityRecordgetTopActivity()

        for (int i = mActivities.size() - 1; i >= 0; --i) {
            final ActivityRecord r = mActivities.get(i);
            if (r.finishing) {
                continue;
            }
            return r;
        }
        return null;
booleanisApplicationTask()

        return taskType == APPLICATION_ACTIVITY_TYPE;
booleanisHomeTask()

        return taskType == HOME_ACTIVITY_TYPE;
booleanisOverHomeStack()

        return mTaskToReturnTo == HOME_ACTIVITY_TYPE || mTaskToReturnTo == RECENTS_ACTIVITY_TYPE;
final voidmoveActivityToFrontLocked(ActivityRecord newTop)
Reorder the history stack so that the passed activity is brought to the front.

        if (DEBUG_ADD_REMOVE) Slog.i(TAG, "Removing and adding activity " + newTop
            + " to stack at top", new RuntimeException("here").fillInStackTrace());

        mActivities.remove(newTop);
        mActivities.add(newTop);
        updateEffectiveIntent();

        setFrontOfTask();
final voidperformClearTaskAtIndexLocked(int activityNdx)
Completely remove all activities associated with an existing task starting at a specified index.

        int numActivities = mActivities.size();
        for ( ; activityNdx < numActivities; ++activityNdx) {
            final ActivityRecord r = mActivities.get(activityNdx);
            if (r.finishing) {
                continue;
            }
            if (stack == null) {
                // Task was restored from persistent storage.
                r.takeFromHistory();
                mActivities.remove(activityNdx);
                --activityNdx;
                --numActivities;
            } else if (stack.finishActivityLocked(r, Activity.RESULT_CANCELED, null, "clear",
                    false)) {
                --activityNdx;
                --numActivities;
            }
        }
final voidperformClearTaskLocked()
Completely remove all activities associated with an existing task.

        mReuseTask = true;
        performClearTaskAtIndexLocked(0);
        mReuseTask = false;
final ActivityRecordperformClearTaskLocked(ActivityRecord newR, int launchFlags)
Perform clear operation as requested by {@link Intent#FLAG_ACTIVITY_CLEAR_TOP}: search from the top of the stack to the given task, then look for an instance of that activity in the stack and, if found, finish all activities on top of it and return the instance.

param
newR Description of the new activity being started.
return
Returns the old activity that should be continued to be used, or null if none was found.

        int numActivities = mActivities.size();
        for (int activityNdx = numActivities - 1; activityNdx >= 0; --activityNdx) {
            ActivityRecord r = mActivities.get(activityNdx);
            if (r.finishing) {
                continue;
            }
            if (r.realActivity.equals(newR.realActivity)) {
                // Here it is!  Now finish everything in front...
                final ActivityRecord ret = r;

                for (++activityNdx; activityNdx < numActivities; ++activityNdx) {
                    r = mActivities.get(activityNdx);
                    if (r.finishing) {
                        continue;
                    }
                    ActivityOptions opts = r.takeOptionsLocked();
                    if (opts != null) {
                        ret.updateOptionsLocked(opts);
                    }
                    if (stack.finishActivityLocked(r, Activity.RESULT_CANCELED, null, "clear",
                            false)) {
                        --activityNdx;
                        --numActivities;
                    }
                }

                // Finally, if this is a normal launch mode (that is, not
                // expecting onNewIntent()), then we will finish the current
                // instance of the activity so a new fresh one can be started.
                if (ret.launchMode == ActivityInfo.LAUNCH_MULTIPLE
                        && (launchFlags & Intent.FLAG_ACTIVITY_SINGLE_TOP) == 0) {
                    if (!ret.finishing) {
                        stack.finishActivityLocked(ret, Activity.RESULT_CANCELED, null,
                                "clear", false);
                        return null;
                    }
                }

                return ret;
            }
        }

        return null;
booleanremoveActivity(ActivityRecord r)

return
true if this was the last activity in the task

        if (mActivities.remove(r) && r.fullscreen) {
            // Was previously in list.
            numFullscreen--;
        }
        if (r.isPersistable()) {
            mService.notifyTaskPersisterLocked(this, false);
        }
        if (mActivities.isEmpty()) {
            return !mReuseTask;
        }
        updateEffectiveIntent();
        return false;
public voidremoveTaskActivitiesLocked()

        // Just remove the entire task.
        performClearTaskAtIndexLocked(0);
voidremovedFromRecents()

        disposeThumbnail();
        closeRecentsChain();
        if (inRecents) {
            inRecents = false;
            mService.notifyTaskPersisterLocked(this, false);
        }
static com.android.server.am.TaskRecordrestoreFromXml(org.xmlpull.v1.XmlPullParser in, ActivityStackSupervisor stackSupervisor)

        return restoreFromXml(in, stackSupervisor, INVALID_TASK_ID);
static com.android.server.am.TaskRecordrestoreFromXml(org.xmlpull.v1.XmlPullParser in, ActivityStackSupervisor stackSupervisor, int inTaskId)

        Intent intent = null;
        Intent affinityIntent = null;
        ArrayList<ActivityRecord> activities = new ArrayList<ActivityRecord>();
        ComponentName realActivity = null;
        ComponentName origActivity = null;
        String affinity = null;
        String rootAffinity = null;
        boolean hasRootAffinity = false;
        boolean rootHasReset = false;
        boolean autoRemoveRecents = false;
        boolean askedCompatMode = false;
        int taskType = ActivityRecord.APPLICATION_ACTIVITY_TYPE;
        int userId = 0;
        int effectiveUid = -1;
        String lastDescription = null;
        long firstActiveTime = -1;
        long lastActiveTime = -1;
        long lastTimeOnTop = 0;
        boolean neverRelinquishIdentity = true;
        int taskId = inTaskId;
        final int outerDepth = in.getDepth();
        TaskDescription taskDescription = new TaskDescription();
        int taskAffiliation = INVALID_TASK_ID;
        int taskAffiliationColor = 0;
        int prevTaskId = INVALID_TASK_ID;
        int nextTaskId = INVALID_TASK_ID;
        int callingUid = -1;
        String callingPackage = "";

        for (int attrNdx = in.getAttributeCount() - 1; attrNdx >= 0; --attrNdx) {
            final String attrName = in.getAttributeName(attrNdx);
            final String attrValue = in.getAttributeValue(attrNdx);
            if (DEBUG_PERSISTER || DEBUG_RESTORER) Slog.d(TaskPersister.TAG,
                        "TaskRecord: attribute name=" + attrName + " value=" + attrValue);
            if (ATTR_TASKID.equals(attrName)) {
                if (taskId == INVALID_TASK_ID) taskId = Integer.valueOf(attrValue);
            } else if (ATTR_REALACTIVITY.equals(attrName)) {
                realActivity = ComponentName.unflattenFromString(attrValue);
            } else if (ATTR_ORIGACTIVITY.equals(attrName)) {
                origActivity = ComponentName.unflattenFromString(attrValue);
            } else if (ATTR_AFFINITY.equals(attrName)) {
                affinity = attrValue;
            } else if (ATTR_ROOT_AFFINITY.equals(attrName)) {
                rootAffinity = attrValue;
                hasRootAffinity = true;
            } else if (ATTR_ROOTHASRESET.equals(attrName)) {
                rootHasReset = Boolean.valueOf(attrValue);
            } else if (ATTR_AUTOREMOVERECENTS.equals(attrName)) {
                autoRemoveRecents = Boolean.valueOf(attrValue);
            } else if (ATTR_ASKEDCOMPATMODE.equals(attrName)) {
                askedCompatMode = Boolean.valueOf(attrValue);
            } else if (ATTR_USERID.equals(attrName)) {
                userId = Integer.valueOf(attrValue);
            } else if (ATTR_EFFECTIVE_UID.equals(attrName)) {
                effectiveUid = Integer.valueOf(attrValue);
            } else if (ATTR_TASKTYPE.equals(attrName)) {
                taskType = Integer.valueOf(attrValue);
            } else if (ATTR_FIRSTACTIVETIME.equals(attrName)) {
                firstActiveTime = Long.valueOf(attrValue);
            } else if (ATTR_LASTACTIVETIME.equals(attrName)) {
                lastActiveTime = Long.valueOf(attrValue);
            } else if (ATTR_LASTDESCRIPTION.equals(attrName)) {
                lastDescription = attrValue;
            } else if (ATTR_LASTTIMEMOVED.equals(attrName)) {
                lastTimeOnTop = Long.valueOf(attrValue);
            } else if (ATTR_NEVERRELINQUISH.equals(attrName)) {
                neverRelinquishIdentity = Boolean.valueOf(attrValue);
            } else if (attrName.startsWith(TaskDescription.ATTR_TASKDESCRIPTION_PREFIX)) {
                taskDescription.restoreFromXml(attrName, attrValue);
            } else if (ATTR_TASK_AFFILIATION.equals(attrName)) {
                taskAffiliation = Integer.valueOf(attrValue);
            } else if (ATTR_PREV_AFFILIATION.equals(attrName)) {
                prevTaskId = Integer.valueOf(attrValue);
            } else if (ATTR_NEXT_AFFILIATION.equals(attrName)) {
                nextTaskId = Integer.valueOf(attrValue);
            } else if (ATTR_TASK_AFFILIATION_COLOR.equals(attrName)) {
                taskAffiliationColor = Integer.valueOf(attrValue);
            } else if (ATTR_CALLING_UID.equals(attrName)) {
                callingUid = Integer.valueOf(attrValue);
            } else if (ATTR_CALLING_PACKAGE.equals(attrName)) {
                callingPackage = attrValue;
            } else {
                Slog.w(TAG, "TaskRecord: Unknown attribute=" + attrName);
            }
        }

        int event;
        while (((event = in.next()) != XmlPullParser.END_DOCUMENT) &&
                (event != XmlPullParser.END_TAG || in.getDepth() < outerDepth)) {
            if (event == XmlPullParser.START_TAG) {
                final String name = in.getName();
                if (DEBUG_PERSISTER || DEBUG_RESTORER)
                        Slog.d(TaskPersister.TAG, "TaskRecord: START_TAG name=" + name);
                if (TAG_AFFINITYINTENT.equals(name)) {
                    affinityIntent = Intent.restoreFromXml(in);
                } else if (TAG_INTENT.equals(name)) {
                    intent = Intent.restoreFromXml(in);
                } else if (TAG_ACTIVITY.equals(name)) {
                    ActivityRecord activity = ActivityRecord.restoreFromXml(in, stackSupervisor);
                    if (DEBUG_PERSISTER || DEBUG_RESTORER)
                            Slog.d(TaskPersister.TAG, "TaskRecord: activity=" + activity);
                    if (activity != null) {
                        activities.add(activity);
                    }
                } else {
                    Slog.e(TAG, "restoreTask: Unexpected name=" + name);
                    XmlUtils.skipCurrentTag(in);
                }
            }
        }

        if (!hasRootAffinity) {
            rootAffinity = affinity;
        } else if ("@".equals(rootAffinity)) {
            rootAffinity = null;
        }

        if (effectiveUid <= 0) {
            Intent checkIntent = intent != null ? intent : affinityIntent;
            effectiveUid = 0;
            if (checkIntent != null) {
                IPackageManager pm = AppGlobals.getPackageManager();
                try {
                    ApplicationInfo ai = pm.getApplicationInfo(
                            checkIntent.getComponent().getPackageName(),
                            PackageManager.GET_UNINSTALLED_PACKAGES
                                    | PackageManager.GET_DISABLED_COMPONENTS, userId);
                    if (ai != null) {
                        effectiveUid = ai.uid;
                    }
                } catch (RemoteException e) {
                }
            }
            Slog.w(TAG, "Updating task #" + taskId + " for " + checkIntent
                    + ": effectiveUid=" + effectiveUid);
        }

        final TaskRecord task = new TaskRecord(stackSupervisor.mService, taskId, intent,
                affinityIntent, affinity, rootAffinity, realActivity, origActivity, rootHasReset,
                autoRemoveRecents, askedCompatMode, taskType, userId, effectiveUid, lastDescription,
                activities, firstActiveTime, lastActiveTime, lastTimeOnTop, neverRelinquishIdentity,
                taskDescription, taskAffiliation, prevTaskId, nextTaskId, taskAffiliationColor,
                callingUid, callingPackage);

        for (int activityNdx = activities.size() - 1; activityNdx >=0; --activityNdx) {
            activities.get(activityNdx).task = task;
        }

        if (ActivityManagerService.DEBUG_RECENTS) Slog.d(TAG, "Restored task=" + task);
        return task;
voidsaveToXml(org.xmlpull.v1.XmlSerializer out)

        if (ActivityManagerService.DEBUG_RECENTS) Slog.i(TAG, "Saving task=" + this);

        out.attribute(null, ATTR_TASKID, String.valueOf(taskId));
        if (realActivity != null) {
            out.attribute(null, ATTR_REALACTIVITY, realActivity.flattenToShortString());
        }
        if (origActivity != null) {
            out.attribute(null, ATTR_ORIGACTIVITY, origActivity.flattenToShortString());
        }
        // Write affinity, and root affinity if it is different from affinity.
        // We use the special string "@" for a null root affinity, so we can identify
        // later whether we were given a root affinity or should just make it the
        // same as the affinity.
        if (affinity != null) {
            out.attribute(null, ATTR_AFFINITY, affinity);
            if (!affinity.equals(rootAffinity)) {
                out.attribute(null, ATTR_ROOT_AFFINITY, rootAffinity != null ? rootAffinity : "@");
            }
        } else if (rootAffinity != null) {
            out.attribute(null, ATTR_ROOT_AFFINITY, rootAffinity != null ? rootAffinity : "@");
        }
        out.attribute(null, ATTR_ROOTHASRESET, String.valueOf(rootWasReset));
        out.attribute(null, ATTR_AUTOREMOVERECENTS, String.valueOf(autoRemoveRecents));
        out.attribute(null, ATTR_ASKEDCOMPATMODE, String.valueOf(askedCompatMode));
        out.attribute(null, ATTR_USERID, String.valueOf(userId));
        out.attribute(null, ATTR_EFFECTIVE_UID, String.valueOf(effectiveUid));
        out.attribute(null, ATTR_TASKTYPE, String.valueOf(taskType));
        out.attribute(null, ATTR_FIRSTACTIVETIME, String.valueOf(firstActiveTime));
        out.attribute(null, ATTR_LASTACTIVETIME, String.valueOf(lastActiveTime));
        out.attribute(null, ATTR_LASTTIMEMOVED, String.valueOf(mLastTimeMoved));
        out.attribute(null, ATTR_NEVERRELINQUISH, String.valueOf(mNeverRelinquishIdentity));
        if (lastDescription != null) {
            out.attribute(null, ATTR_LASTDESCRIPTION, lastDescription.toString());
        }
        if (lastTaskDescription != null) {
            lastTaskDescription.saveToXml(out);
        }
        out.attribute(null, ATTR_TASK_AFFILIATION_COLOR, String.valueOf(mAffiliatedTaskColor));
        out.attribute(null, ATTR_TASK_AFFILIATION, String.valueOf(mAffiliatedTaskId));
        out.attribute(null, ATTR_PREV_AFFILIATION, String.valueOf(mPrevAffiliateTaskId));
        out.attribute(null, ATTR_NEXT_AFFILIATION, String.valueOf(mNextAffiliateTaskId));
        out.attribute(null, ATTR_CALLING_UID, String.valueOf(mCallingUid));
        out.attribute(null, ATTR_CALLING_PACKAGE, mCallingPackage == null ? "" : mCallingPackage);

        if (affinityIntent != null) {
            out.startTag(null, TAG_AFFINITYINTENT);
            affinityIntent.saveToXml(out);
            out.endTag(null, TAG_AFFINITYINTENT);
        }

        out.startTag(null, TAG_INTENT);
        intent.saveToXml(out);
        out.endTag(null, TAG_INTENT);

        final ArrayList<ActivityRecord> activities = mActivities;
        final int numActivities = activities.size();
        for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) {
            final ActivityRecord r = activities.get(activityNdx);
            if (r.info.persistableMode == ActivityInfo.PERSIST_ROOT_ONLY || !r.isPersistable() ||
                    ((r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) &&
                            activityNdx > 0) {
                // Stop at first non-persistable or first break in task (CLEAR_WHEN_TASK_RESET).
                break;
            }
            out.startTag(null, TAG_ACTIVITY);
            r.saveToXml(out);
            out.endTag(null, TAG_ACTIVITY);
        }
final voidsetFrontOfTask()
Call after activity movement or finish to make sure that frontOfTask is set correctly

        boolean foundFront = false;
        final int numActivities = mActivities.size();
        for (int activityNdx = 0; activityNdx < numActivities; ++activityNdx) {
            final ActivityRecord r = mActivities.get(activityNdx);
            if (foundFront || r.finishing) {
                r.frontOfTask = false;
            } else {
                r.frontOfTask = true;
                // Set frontOfTask false for every following activity.
                foundFront = true;
            }
        }
        if (!foundFront && numActivities > 0) {
            // All activities of this task are finishing. As we ought to have a frontOfTask
            // activity, make the bottom activity front.
            mActivities.get(0).frontOfTask = true;
        }
voidsetIntent(ActivityRecord r)
Sets the original intent, and the calling uid and package.

        setIntent(r.intent, r.info);
        mCallingUid = r.launchedFromUid;
        mCallingPackage = r.launchedFromPackage;
private voidsetIntent(android.content.Intent _intent, android.content.pm.ActivityInfo info)
Sets the original intent, _without_ updating the calling uid or package.

        if (intent == null) {
            mNeverRelinquishIdentity =
                    (info.flags & ActivityInfo.FLAG_RELINQUISH_TASK_IDENTITY) == 0;
        } else if (mNeverRelinquishIdentity) {
            return;
        }

        affinity = info.taskAffinity;
        if (intent == null) {
            // If this task already has an intent associated with it, don't set the root
            // affinity -- we don't want it changing after initially set, but the initially
            // set value may be null.
            rootAffinity = affinity;
        }
        effectiveUid = info.applicationInfo.uid;
        stringName = null;

        if (info.targetActivity == null) {
            if (_intent != null) {
                // If this Intent has a selector, we want to clear it for the
                // recent task since it is not relevant if the user later wants
                // to re-launch the app.
                if (_intent.getSelector() != null || _intent.getSourceBounds() != null) {
                    _intent = new Intent(_intent);
                    _intent.setSelector(null);
                    _intent.setSourceBounds(null);
                }
            }
            if (ActivityManagerService.DEBUG_TASKS) Slog.v(ActivityManagerService.TAG,
                    "Setting Intent of " + this + " to " + _intent);
            intent = _intent;
            realActivity = _intent != null ? _intent.getComponent() : null;
            origActivity = null;
        } else {
            ComponentName targetComponent = new ComponentName(
                    info.packageName, info.targetActivity);
            if (_intent != null) {
                Intent targetIntent = new Intent(_intent);
                targetIntent.setComponent(targetComponent);
                targetIntent.setSelector(null);
                targetIntent.setSourceBounds(null);
                if (ActivityManagerService.DEBUG_TASKS) Slog.v(ActivityManagerService.TAG,
                        "Setting Intent of " + this + " to target " + targetIntent);
                intent = targetIntent;
                realActivity = targetComponent;
                origActivity = _intent.getComponent();
            } else {
                intent = null;
                realActivity = targetComponent;
                origActivity = new ComponentName(info.packageName, info.name);
            }
        }

        final int intentFlags = intent == null ? 0 : intent.getFlags();
        if ((intentFlags & Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED) != 0) {
            // Once we are set to an Intent with this flag, we count this
            // task as having a true root activity.
            rootWasReset = true;
        }

        userId = UserHandle.getUserId(info.applicationInfo.uid);
        if ((info.flags & ActivityInfo.FLAG_AUTO_REMOVE_FROM_RECENTS) != 0) {
            // If the activity itself has requested auto-remove, then just always do it.
            autoRemoveRecents = true;
        } else if ((intentFlags & (Intent.FLAG_ACTIVITY_NEW_DOCUMENT
                | Intent.FLAG_ACTIVITY_RETAIN_IN_RECENTS)) == Intent.FLAG_ACTIVITY_NEW_DOCUMENT) {
            // If the caller has not asked for the document to be retained, then we may
            // want to turn on auto-remove, depending on whether the target has set its
            // own document launch mode.
            if (info.documentLaunchMode != ActivityInfo.DOCUMENT_LAUNCH_NONE) {
                autoRemoveRecents = false;
            } else {
                autoRemoveRecents = true;
            }
        } else {
            autoRemoveRecents = false;
        }
booleansetLastThumbnail(android.graphics.Bitmap thumbnail)
Sets the last thumbnail.

return
whether the thumbnail was set

        if (mLastThumbnail != thumbnail) {
            mLastThumbnail = thumbnail;
            if (thumbnail == null) {
                if (mLastThumbnailFile != null) {
                    mLastThumbnailFile.delete();
                }
            } else {
                mService.mTaskPersister.saveImage(thumbnail, mFilename);
            }
            return true;
        }
        return false;
voidsetNextAffiliate(com.android.server.am.TaskRecord nextAffiliate)

        mNextAffiliate = nextAffiliate;
        mNextAffiliateTaskId = nextAffiliate == null ? INVALID_TASK_ID : nextAffiliate.taskId;
voidsetPrevAffiliate(com.android.server.am.TaskRecord prevAffiliate)

        mPrevAffiliate = prevAffiliate;
        mPrevAffiliateTaskId = prevAffiliate == null ? INVALID_TASK_ID : prevAffiliate.taskId;
voidsetTaskToAffiliateWith(com.android.server.am.TaskRecord taskToAffiliateWith)

        closeRecentsChain();
        mAffiliatedTaskId = taskToAffiliateWith.mAffiliatedTaskId;
        mAffiliatedTaskColor = taskToAffiliateWith.mAffiliatedTaskColor;
        // Find the end
        while (taskToAffiliateWith.mNextAffiliate != null) {
            final TaskRecord nextRecents = taskToAffiliateWith.mNextAffiliate;
            if (nextRecents.mAffiliatedTaskId != mAffiliatedTaskId) {
                Slog.e(TAG, "setTaskToAffiliateWith: nextRecents=" + nextRecents + " affilTaskId="
                        + nextRecents.mAffiliatedTaskId + " should be " + mAffiliatedTaskId);
                if (nextRecents.mPrevAffiliate == taskToAffiliateWith) {
                    nextRecents.setPrevAffiliate(null);
                }
                taskToAffiliateWith.setNextAffiliate(null);
                break;
            }
            taskToAffiliateWith = nextRecents;
        }
        taskToAffiliateWith.setNextAffiliate(this);
        setPrevAffiliate(taskToAffiliateWith);
        setNextAffiliate(null);
voidsetTaskToReturnTo(int taskToReturnTo)

        if (IGNORE_RETURN_TO_RECENTS && taskToReturnTo == RECENTS_ACTIVITY_TYPE) {
            taskToReturnTo = HOME_ACTIVITY_TYPE;
        }
        mTaskToReturnTo = taskToReturnTo;
public java.lang.StringtoString()

        StringBuilder sb = new StringBuilder(128);
        if (stringName != null) {
            sb.append(stringName);
            sb.append(" U=");
            sb.append(userId);
            sb.append(" sz=");
            sb.append(mActivities.size());
            sb.append('}");
            return sb.toString();
        }
        sb.append("TaskRecord{");
        sb.append(Integer.toHexString(System.identityHashCode(this)));
        sb.append(" #");
        sb.append(taskId);
        if (affinity != null) {
            sb.append(" A=");
            sb.append(affinity);
        } else if (intent != null) {
            sb.append(" I=");
            sb.append(intent.getComponent().flattenToShortString());
        } else if (affinityIntent != null) {
            sb.append(" aI=");
            sb.append(affinityIntent.getComponent().flattenToShortString());
        } else {
            sb.append(" ??");
        }
        stringName = sb.toString();
        return toString();
ActivityRecordtopRunningActivityLocked(ActivityRecord notTop)

        for (int activityNdx = mActivities.size() - 1; activityNdx >= 0; --activityNdx) {
            ActivityRecord r = mActivities.get(activityNdx);
            if (!r.finishing && r != notTop && stack.okToShowLocked(r)) {
                return r;
            }
        }
        return null;
voidtouchActiveTime()

        lastActiveTime = System.currentTimeMillis();
        if (firstActiveTime == 0) {
            firstActiveTime = lastActiveTime;
        }
voidupdateEffectiveIntent()

        final int effectiveRootIndex = findEffectiveRootIndex();
        final ActivityRecord r = mActivities.get(effectiveRootIndex);
        setIntent(r);
voidupdateTaskDescription()
Updates the last task description values.

        // Traverse upwards looking for any break between main task activities and
        // utility activities.
        int activityNdx;
        final int numActivities = mActivities.size();
        final boolean relinquish = numActivities == 0 ? false :
                (mActivities.get(0).info.flags & ActivityInfo.FLAG_RELINQUISH_TASK_IDENTITY) != 0;
        for (activityNdx = Math.min(numActivities, 1); activityNdx < numActivities;
                ++activityNdx) {
            final ActivityRecord r = mActivities.get(activityNdx);
            if (relinquish && (r.info.flags & ActivityInfo.FLAG_RELINQUISH_TASK_IDENTITY) == 0) {
                // This will be the top activity for determining taskDescription. Pre-inc to
                // overcome initial decrement below.
                ++activityNdx;
                break;
            }
            if (r.intent != null &&
                    (r.intent.getFlags() & Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) != 0) {
                break;
            }
        }
        if (activityNdx > 0) {
            // Traverse downwards starting below break looking for set label, icon.
            // Note that if there are activities in the task but none of them set the
            // recent activity values, then we do not fall back to the last set
            // values in the TaskRecord.
            String label = null;
            String iconFilename = null;
            int colorPrimary = 0;
            for (--activityNdx; activityNdx >= 0; --activityNdx) {
                final ActivityRecord r = mActivities.get(activityNdx);
                if (r.taskDescription != null) {
                    if (label == null) {
                        label = r.taskDescription.getLabel();
                    }
                    if (iconFilename == null) {
                        iconFilename = r.taskDescription.getIconFilename();
                    }
                    if (colorPrimary == 0) {
                        colorPrimary = r.taskDescription.getPrimaryColor();
                    }
                }
            }
            lastTaskDescription = new TaskDescription(label, colorPrimary, iconFilename);
            // Update the task affiliation color if we are the parent of the group
            if (taskId == mAffiliatedTaskId) {
                mAffiliatedTaskColor = lastTaskDescription.getPrimaryColor();
            }
        }