Add a listener when task snapshots change
Since we start recents before we take the snapshot, we need to add
a mechanism to inform recents about task snapshots changes.
We add a new method to TaskStackChangedListener,
onTaskSnapshotChanged, which gets called whenever a task snapshot
changes. Then, SystemUI registers such a listener and updates the
task thumbnail view for the specific task.
Test: Open app, press recents, make sure thumbnail is up-to-date
Bug: 31339431
Change-Id: I01e81b9cd11886da734da671c68d5732aa51009f
diff --git a/services/core/java/com/android/server/wm/TaskSnapshotController.java b/services/core/java/com/android/server/wm/TaskSnapshotController.java
index efa72a6..bce2099 100644
--- a/services/core/java/com/android/server/wm/TaskSnapshotController.java
+++ b/services/core/java/com/android/server/wm/TaskSnapshotController.java
@@ -17,17 +17,10 @@
package com.android.server.wm;
import static android.app.ActivityManager.ENABLE_TASK_SNAPSHOTS;
-import static android.graphics.Bitmap.Config.ARGB_8888;
-import static android.graphics.GraphicBuffer.USAGE_HW_TEXTURE;
-import static android.graphics.GraphicBuffer.USAGE_SW_READ_NEVER;
-import static android.graphics.GraphicBuffer.USAGE_SW_WRITE_NEVER;
-import static android.graphics.PixelFormat.RGBA_8888;
import android.annotation.Nullable;
import android.app.ActivityManager.StackId;
import android.app.ActivityManager.TaskSnapshot;
-import android.graphics.Bitmap;
-import android.graphics.Canvas;
import android.graphics.GraphicBuffer;
import android.util.ArraySet;
import android.view.WindowManagerPolicy.StartingSurface;
@@ -76,6 +69,9 @@
final TaskSnapshot snapshot = snapshotTask(task);
if (snapshot != null) {
mCache.putSnapshot(task, snapshot);
+ if (task.getController() != null) {
+ task.getController().reportSnapshotChanged(snapshot);
+ }
}
}
}