Initial changes to add callback on task stack changes. (Bug 17672056, Bug 18291345)
Add a listener to listen for changes in the Task stacks to preload thumbnails from the
system. In addition, reduce the amount of synchronous work done in activity creation
and first measure/layout passes.
Change-Id: I8bd9155d7a05e89c190a20429acff69a17808208
diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index 38809cb..d9396d8 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -2871,6 +2871,7 @@
final TaskRecord task = r.task;
task.setLastThumbnail(task.stack.screenshotActivities(r));
mService.addRecentTaskLocked(task);
+ mService.notifyTaskStackChangedLocked();
mWindowManager.setAppVisibility(r.appToken, false);
}