Use cached thumbnails in Recent tasks.
The thumbnail returned from ActivityManager.getTaskThumbnail() now
contains either a Bitmap or a ParcelFileDescriptor that points to
a file containing a compressed Bitmap. The Recent tasks list is
now responsible for all thumbnail Bitmap caching as the activity
manager keeps only the most recent 5. This also permits low memory
devices to have many more tasks in the Recent tasks list.
As part of this CL the concept of subtasks is removed eliminating
code supporting the TaskAccessInfo and IThumbnailRetriever classes.
Fixes bug 15828934.
Change-Id: I0fd0320a1a04e3c78d79357899b83a2fff97abf2
diff --git a/core/java/android/app/ActivityManagerNative.java b/core/java/android/app/ActivityManagerNative.java
index 572d389..9e10e3d 100644
--- a/core/java/android/app/ActivityManagerNative.java
+++ b/core/java/android/app/ActivityManagerNative.java
@@ -548,28 +548,14 @@
return true;
}
- case GET_TASK_THUMBNAILS_TRANSACTION: {
+ case GET_TASK_THUMBNAIL_TRANSACTION: {
data.enforceInterface(IActivityManager.descriptor);
int id = data.readInt();
- ActivityManager.TaskThumbnails bm = getTaskThumbnails(id);
+ ActivityManager.TaskThumbnail taskThumbnail = getTaskThumbnail(id);
reply.writeNoException();
- if (bm != null) {
+ if (taskThumbnail != null) {
reply.writeInt(1);
- bm.writeToParcel(reply, 0);
- } else {
- reply.writeInt(0);
- }
- return true;
- }
-
- case GET_TASK_TOP_THUMBNAIL_TRANSACTION: {
- data.enforceInterface(IActivityManager.descriptor);
- int id = data.readInt();
- Bitmap bm = getTaskTopThumbnail(id);
- reply.writeNoException();
- if (bm != null) {
- reply.writeInt(1);
- bm.writeToParcel(reply, 0);
+ taskThumbnail.writeToParcel(reply, Parcelable.PARCELABLE_WRITE_RETURN_VALUE);
} else {
reply.writeInt(0);
}
@@ -1799,17 +1785,6 @@
return true;
}
- case REMOVE_SUB_TASK_TRANSACTION:
- {
- data.enforceInterface(IActivityManager.descriptor);
- int taskId = data.readInt();
- int subTaskIndex = data.readInt();
- boolean result = removeSubTask(taskId, subTaskIndex);
- reply.writeNoException();
- reply.writeInt(result ? 1 : 0);
- return true;
- }
-
case REMOVE_TASK_TRANSACTION:
{
data.enforceInterface(IActivityManager.descriptor);
@@ -2773,35 +2748,20 @@
reply.recycle();
return list;
}
- public ActivityManager.TaskThumbnails getTaskThumbnails(int id) throws RemoteException {
+ public ActivityManager.TaskThumbnail getTaskThumbnail(int id) throws RemoteException {
Parcel data = Parcel.obtain();
Parcel reply = Parcel.obtain();
data.writeInterfaceToken(IActivityManager.descriptor);
data.writeInt(id);
- mRemote.transact(GET_TASK_THUMBNAILS_TRANSACTION, data, reply, 0);
+ mRemote.transact(GET_TASK_THUMBNAIL_TRANSACTION, data, reply, 0);
reply.readException();
- ActivityManager.TaskThumbnails bm = null;
+ ActivityManager.TaskThumbnail taskThumbnail = null;
if (reply.readInt() != 0) {
- bm = ActivityManager.TaskThumbnails.CREATOR.createFromParcel(reply);
+ taskThumbnail = ActivityManager.TaskThumbnail.CREATOR.createFromParcel(reply);
}
data.recycle();
reply.recycle();
- return bm;
- }
- public Bitmap getTaskTopThumbnail(int id) throws RemoteException {
- Parcel data = Parcel.obtain();
- Parcel reply = Parcel.obtain();
- data.writeInterfaceToken(IActivityManager.descriptor);
- data.writeInt(id);
- mRemote.transact(GET_TASK_TOP_THUMBNAIL_TRANSACTION, data, reply, 0);
- reply.readException();
- Bitmap bm = null;
- if (reply.readInt() != 0) {
- bm = Bitmap.CREATOR.createFromParcel(reply);
- }
- data.recycle();
- reply.recycle();
- return bm;
+ return taskThumbnail;
}
public List getServices(int maxNum, int flags) throws RemoteException {
Parcel data = Parcel.obtain();
@@ -4516,20 +4476,6 @@
return result;
}
- public boolean removeSubTask(int taskId, int subTaskIndex) throws RemoteException {
- Parcel data = Parcel.obtain();
- Parcel reply = Parcel.obtain();
- data.writeInterfaceToken(IActivityManager.descriptor);
- data.writeInt(taskId);
- data.writeInt(subTaskIndex);
- mRemote.transact(REMOVE_SUB_TASK_TRANSACTION, data, reply, 0);
- reply.readException();
- boolean result = reply.readInt() != 0;
- reply.recycle();
- data.recycle();
- return result;
- }
-
public boolean removeTask(int taskId, int flags) throws RemoteException {
Parcel data = Parcel.obtain();
Parcel reply = Parcel.obtain();