diff options
| -rw-r--r-- | services/core/java/com/android/server/wm/TaskSystemBarsListenerController.java | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/services/core/java/com/android/server/wm/TaskSystemBarsListenerController.java b/services/core/java/com/android/server/wm/TaskSystemBarsListenerController.java index acb6061de93f..dc6b70d839e4 100644 --- a/services/core/java/com/android/server/wm/TaskSystemBarsListenerController.java +++ b/services/core/java/com/android/server/wm/TaskSystemBarsListenerController.java @@ -48,8 +48,10 @@ final class TaskSystemBarsListenerController { int taskId, boolean visible, boolean wereRevealedFromSwipeOnSystemBar) { - HashSet<TaskSystemBarsListener> localListeners; - localListeners = new HashSet<>(mListeners); + if (mListeners.isEmpty()) { + return; + } + final HashSet<TaskSystemBarsListener> localListeners = new HashSet<>(mListeners); mBackgroundExecutor.execute(() -> { for (TaskSystemBarsListener listener : localListeners) { |