/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server.am;
import static com.android.server.am.ActivityManagerService.TAG;
import static com.android.server.am.ActivityRecord.HOME_ACTIVITY_TYPE;
import static com.android.server.am.ActivityRecord.APPLICATION_ACTIVITY_TYPE;
import static com.android.server.am.ActivityRecord.RECENTS_ACTIVITY_TYPE;
import static com.android.server.am.ActivityStackSupervisor.DEBUG_ADD_REMOVE;
import static com.android.server.am.TaskPersister.DEBUG_PERSISTER;
import static com.android.server.am.TaskPersister.DEBUG_RESTORER;
import android.app.Activity;
import android.app.ActivityManager;
import android.app.ActivityManager.TaskThumbnail;
import android.app.ActivityManager.TaskDescription;
import android.app.ActivityOptions;
import android.app.AppGlobals;
import android.content.ComponentName;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.ApplicationInfo;
import android.content.pm.IPackageManager;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.os.ParcelFileDescriptor;
import android.os.RemoteException;
import android.os.UserHandle;
import android.service.voice.IVoiceInteractionSession;
import android.util.Slog;
import com.android.internal.app.IVoiceInteractor;
import com.android.internal.util.XmlUtils;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlSerializer;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
final class TaskRecord {
static final String ATTR_TASKID = "task_id";
private static final String TAG_INTENT = "intent";
private static final String TAG_AFFINITYINTENT = "affinity_intent";
static final String ATTR_REALACTIVITY = "real_activity";
private static final String ATTR_ORIGACTIVITY = "orig_activity";
static final String TAG_ACTIVITY = "activity";
private static final String ATTR_AFFINITY = "affinity";
private static final String ATTR_ROOT_AFFINITY = "root_affinity";
private static final String ATTR_ROOTHASRESET = "root_has_reset";
private static final String ATTR_AUTOREMOVERECENTS = "auto_remove_recents";
private static final String ATTR_ASKEDCOMPATMODE = "asked_compat_mode";
private static final String ATTR_USERID = "user_id";
private static final String ATTR_EFFECTIVE_UID = "effective_uid";
private static final String ATTR_TASKTYPE = "task_type";
private static final String ATTR_FIRSTACTIVETIME = "first_active_time";
private static final String ATTR_LASTACTIVETIME = "last_active_time";
private static final String ATTR_LASTDESCRIPTION = "last_description";
private static final String ATTR_LASTTIMEMOVED = "last_time_moved";
private static final String ATTR_NEVERRELINQUISH = "never_relinquish_identity";
static final String ATTR_TASK_AFFILIATION = "task_affiliation";
private static final String ATTR_PREV_AFFILIATION = "prev_affiliation";
private static final String ATTR_NEXT_AFFILIATION = "next_affiliation";
private static final String ATTR_TASK_AFFILIATION_COLOR = "task_affiliation_color";
private static final String ATTR_CALLING_UID = "calling_uid";
private static final String ATTR_CALLING_PACKAGE = "calling_package";
private static final String TASK_THUMBNAIL_SUFFIX = "_task_thumbnail";
static final boolean IGNORE_RETURN_TO_RECENTS = true;
static final int INVALID_TASK_ID = -1;
final int taskId; // Unique identifier for this task.
String affinity; // The affinity name for this task, or null; may change identity.
String rootAffinity; // Initial base affinity, or null; does not change from initial root.
final IVoiceInteractionSession voiceSession; // Voice interaction session driving task
final IVoiceInteractor voiceInteractor; // Associated interactor to provide to app
Intent intent; // The original intent that started the task.
Intent affinityIntent; // Intent of affinity-moved activity that started this task.
int effectiveUid; // The current effective uid of the identity of this task.
ComponentName origActivity; // The non-alias activity component of the intent.
ComponentName realActivity; // The actual activity component that started the task.
long firstActiveTime; // First time this task was active.
long lastActiveTime; // Last time this task was active, including sleep.
boolean inRecents; // Actually in the recents list?
boolean isAvailable; // Is the activity available to be launched?
boolean rootWasReset; // True if the intent at the root of the task had
// the FLAG_ACTIVITY_RESET_TASK_IF_NEEDED flag.
boolean autoRemoveRecents; // If true, we should automatically remove the task from
// recents when activity finishes
boolean askedCompatMode;// Have asked the user about compat mode for this task.
boolean hasBeenVisible; // Set if any activities in the task have been visible to the user.
String stringName; // caching of toString() result.
int userId; // user for which this task was created
int creatorUid; // The app uid that originally created the task
int numFullscreen; // Number of fullscreen activities.
// This represents the last resolved activity values for this task
// NOTE: This value needs to be persisted with each task
TaskDescription lastTaskDescription = new TaskDescription();
/** List of all activities in the task arranged in history order */
final ArrayList<ActivityRecord> mActivities;
/** Current stack */
ActivityStack stack;
/** Takes on same set of values as ActivityRecord.mActivityType */
int taskType;
/** Takes on same value as first root activity */
boolean isPersistable = false;
int maxRecents;
/** 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. */
long mLastTimeMoved = System.currentTimeMillis();
/** 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. */
private int mTaskToReturnTo = APPLICATION_ACTIVITY_TYPE;
/** If original intent did not allow relinquishing task identity, save that information */
boolean mNeverRelinquishIdentity = true;
// Used in the unique case where we are clearing the task in order to reuse it. In that case we
// do not want to delete the stack when the task goes empty.
boolean mReuseTask = false;
private Bitmap mLastThumbnail; // Last thumbnail captured for this item.
private final File mLastThumbnailFile; // File containing last thumbnail.
private final String mFilename;
CharSequence lastDescription; // Last description captured for this item.
int mAffiliatedTaskId; // taskId of parent affiliation or self if no parent.
int mAffiliatedTaskColor; // color of the parent task affiliation.
TaskRecord mPrevAffiliate; // previous task in affiliated chain.
int mPrevAffiliateTaskId = INVALID_TASK_ID; // previous id for persistence.
TaskRecord mNextAffiliate; // next task in affiliated chain.
int mNextAffiliateTaskId = INVALID_TASK_ID; // next id for persistence.
// For relaunching the task from recents as though it was launched by the original launcher.
int mCallingUid;
String mCallingPackage;
final ActivityManagerService mService;
TaskRecord(ActivityManagerService service, int _taskId, ActivityInfo info, Intent _intent,
IVoiceInteractionSession _voiceSession, 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, ActivityInfo info, Intent _intent,
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, Intent _intent, Intent _affinityIntent,
String _affinity, String _rootAffinity, ComponentName _realActivity,
ComponentName _origActivity, boolean _rootWasReset, boolean _autoRemoveRecents,
boolean _askedCompatMode, int _taskType, int _userId, int _effectiveUid,
String _lastDescription, ArrayList<ActivityRecord> activities, long _firstActiveTime,
long _lastActiveTime, long lastTimeMoved, boolean neverRelinquishIdentity,
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;
}
void touchActiveTime() {
lastActiveTime = System.currentTimeMillis();
if (firstActiveTime == 0) {
firstActiveTime = lastActiveTime;
}
}
long getInactiveDuration() {
return System.currentTimeMillis() - lastActiveTime;
}
/** Sets the original intent, and the calling uid and package. */
void setIntent(ActivityRecord r) {
setIntent(r.intent, r.info);
mCallingUid = r.launchedFromUid;
mCallingPackage = r.launchedFromPackage;
}
/** Sets the original intent, _without_ updating the calling uid or package. */
private void setIntent(Intent _intent, ActivityInfo info) {
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;
}
}
void setTaskToReturnTo(int taskToReturnTo) {
if (IGNORE_RETURN_TO_RECENTS && taskToReturnTo == RECENTS_ACTIVITY_TYPE) {
taskToReturnTo = HOME_ACTIVITY_TYPE;
}
mTaskToReturnTo = taskToReturnTo;
}
int getTaskToReturnTo() {
return mTaskToReturnTo;
}
void setPrevAffiliate(TaskRecord prevAffiliate) {
mPrevAffiliate = prevAffiliate;
mPrevAffiliateTaskId = prevAffiliate == null ? INVALID_TASK_ID : prevAffiliate.taskId;
}
void setNextAffiliate(TaskRecord nextAffiliate) {
mNextAffiliate = nextAffiliate;
mNextAffiliateTaskId = nextAffiliate == null ? INVALID_TASK_ID : nextAffiliate.taskId;
}
// Close up recents linked list.
void closeRecentsChain() {
if (mPrevAffiliate != null) {
mPrevAffiliate.setNextAffiliate(mNextAffiliate);
}
if (mNextAffiliate != null) {
mNextAffiliate.setPrevAffiliate(mPrevAffiliate);
}
setPrevAffiliate(null);
setNextAffiliate(null);
}
void removedFromRecents() {
disposeThumbnail();
closeRecentsChain();
if (inRecents) {
inRecents = false;
mService.notifyTaskPersisterLocked(this, false);
}
}
void setTaskToAffiliateWith(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);
}
/**
* Sets the last thumbnail.
* @return whether the thumbnail was set
*/
boolean setLastThumbnail(Bitmap thumbnail) {
if (mLastThumbnail != thumbnail) {
mLastThumbnail = thumbnail;
if (thumbnail == null) {
if (mLastThumbnailFile != null) {
mLastThumbnailFile.delete();
}
} else {
mService.mTaskPersister.saveImage(thumbnail, mFilename);
}
return true;
}
return false;
}
void getLastThumbnail(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) {
}
}
}
void freeLastThumbnail() {
mLastThumbnail = null;
}
void disposeThumbnail() {
mLastThumbnail = null;
lastDescription = null;
}
/** Returns the intent for the root activity for this task */
Intent getBaseIntent() {
return intent != null ? intent : affinityIntent;
}
/** Returns the first non-finishing activity from the root. */
ActivityRecord getRootActivity() {
for (int i = 0; i < mActivities.size(); i++) {
final ActivityRecord r = mActivities.get(i);
if (r.finishing) {
continue;
}
return r;
}
return null;
}
ActivityRecord getTopActivity() {
for (int i = mActivities.size() - 1; i >= 0; --i) {
final ActivityRecord r = mActivities.get(i);
if (r.finishing) {
continue;
}
return r;
}
return null;
}
ActivityRecord topRunningActivityLocked(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;
}
/** Call after activity movement or finish to make sure that frontOfTask is set correctly */
final void setFrontOfTask() {
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;
}
}
/**
* Reorder the history stack so that the passed activity is brought to the front.
*/
final void moveActivityToFrontLocked(ActivityRecord newTop) {
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();
}
void addActivityAtBottom(ActivityRecord r) {
addActivityAtIndex(0, r);
}
void addActivityToTop(ActivityRecord r) {
addActivityAtIndex(mActivities.size(), r);
}
void addActivityAtIndex(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);
}
}
/** @return true if this was the last activity in the task */
boolean removeActivity(ActivityRecord r) {
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;
}
boolean autoRemoveFromRecents() {
// 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);
}
/**
* Completely remove all activities associated with an existing
* task starting at a specified index.
*/
final void performClearTaskAtIndexLocked(int activityNdx) {
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;
}
}
}
/**
* Completely remove all activities associated with an existing task.
*/
final void performClearTaskLocked() {
mReuseTask = true;
performClearTaskAtIndexLocked(0);
mReuseTask = false;
}
/**
* 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.
*/
final ActivityRecord performClearTaskLocked(ActivityRecord newR, int launchFlags) {
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;
}
public TaskThumbnail getTaskThumbnailLocked() {
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;
}
public void removeTaskActivitiesLocked() {
// Just remove the entire task.
performClearTaskAtIndexLocked(0);
}
boolean isHomeTask() {
return taskType == HOME_ACTIVITY_TYPE;
}
boolean isApplicationTask() {
return taskType == APPLICATION_ACTIVITY_TYPE;
}
boolean isOverHomeStack() {
return mTaskToReturnTo == HOME_ACTIVITY_TYPE || mTaskToReturnTo == RECENTS_ACTIVITY_TYPE;
}
/**
* 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 ActivityRecord findActivityInHistoryLocked(ActivityRecord r) {
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;
}
/** Updates the last task description values. */
void updateTaskDescription() {
// 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();
}
}
}
int findEffectiveRootIndex() {
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;
}
void updateEffectiveIntent() {
final int effectiveRootIndex = findEffectiveRootIndex();
final ActivityRecord r = mActivities.get(effectiveRootIndex);
setIntent(r);
}
void saveToXml(XmlSerializer out) throws IOException, XmlPullParserException {
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);
}
}
static TaskRecord restoreFromXml(XmlPullParser in, ActivityStackSupervisor stackSupervisor)
throws IOException, XmlPullParserException {
return restoreFromXml(in, stackSupervisor, INVALID_TASK_ID);
}
static TaskRecord restoreFromXml(XmlPullParser in, ActivityStackSupervisor stackSupervisor,
int inTaskId) throws IOException, XmlPullParserException {
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;
}
void dump(PrintWriter pw, 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)");
}
@Override
public String toString() {
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();
}
}
|
