Add support to preload recents activity in background
The recents activity may be died in background for some reasons.
Then there may have jank when swiping-up the recents because it
needs to initialize at the same time. Especially when the recents
is the home activity. The case of configuration change is similar.
This CL provides the ability to start the recents activity in
background without affecting the foreground applications.
Bug: 127350205
Test: atest RecentsAnimationTest#testPreloadRecentsActivity
Change-Id: Idef72ce986eb910b302953705365437bc5ec2bf8
diff --git a/services/core/java/com/android/server/wm/ActivityTaskManagerService.java b/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
index 9fc278e..c5a0de1 100644
--- a/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
+++ b/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
@@ -1451,9 +1451,15 @@
.execute();
}
+ /**
+ * Start the recents activity to perform the recents animation.
+ *
+ * @param intent The intent to start the recents activity.
+ * @param recentsAnimationRunner Pass {@code null} to only preload the activity.
+ */
@Override
- public void startRecentsActivity(Intent intent, IAssistDataReceiver assistDataReceiver,
- IRecentsAnimationRunner recentsAnimationRunner) {
+ public void startRecentsActivity(Intent intent, @Deprecated IAssistDataReceiver unused,
+ @Nullable IRecentsAnimationRunner recentsAnimationRunner) {
enforceCallerIsRecentsOrHasPermission(MANAGE_ACTIVITY_STACKS, "startRecentsActivity()");
final int callingPid = Binder.getCallingPid();
final long origId = Binder.clearCallingIdentity();
@@ -1464,9 +1470,13 @@
// Start a new recents animation
final RecentsAnimation anim = new RecentsAnimation(this, mStackSupervisor,
- getActivityStartController(), mWindowManager, callingPid);
- anim.startRecentsActivity(intent, recentsAnimationRunner, recentsComponent,
- recentsUid, assistDataReceiver);
+ getActivityStartController(), mWindowManager, intent, recentsComponent,
+ recentsUid, callingPid);
+ if (recentsAnimationRunner == null) {
+ anim.preloadRecentsActivity();
+ } else {
+ anim.startRecentsActivity(recentsAnimationRunner);
+ }
}
} finally {
Binder.restoreCallingIdentity(origId);