Fix SystemUI crash from back navigation trigger acquire wakelock.
PowerManager throw permission exception because core didn't clear
calling identitiy when calling startBackNavigation.
OTH, setLaunchBehind shouldn't pause current resume activity, will
be addressed separately from this CL.
Bug: 300428312
Test: launch two activity at once, to make the first activity stay in
initialized stage. Then when trigger gesture back, SystemUI won't crash
from receive SecurityException.
Change-Id: I5b283d631f151925cdc8877677df433660a5047c
diff --git a/services/core/java/com/android/server/wm/ActivityTaskManagerService.java b/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
index 6999c6a..54a666d 100644
--- a/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
+++ b/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
@@ -1841,8 +1841,12 @@
RemoteCallback navigationObserver, BackAnimationAdapter adapter) {
mAmInternal.enforceCallingPermission(START_TASKS_FROM_RECENTS,
"startBackNavigation()");
-
- return mBackNavigationController.startBackNavigation(navigationObserver, adapter);
+ final long origId = Binder.clearCallingIdentity();
+ try {
+ return mBackNavigationController.startBackNavigation(navigationObserver, adapter);
+ } finally {
+ Binder.restoreCallingIdentity(origId);
+ }
}
/**
