1 files changed, 12 insertions, 5 deletions
diff --git a/core/java/android/app/ActivityView.java b/core/java/android/app/ActivityView.java
index c29d75e..94ea2c5 100644
--- a/core/java/android/app/ActivityView.java
+++ b/core/java/android/app/ActivityView.java
@@ -354,9 +354,11 @@ public class ActivityView extends ViewGroup {
     private static class ActivityContainerWrapper {
         private final IActivityContainer mIActivityContainer;
         private final CloseGuard mGuard = CloseGuard.get();
+        boolean mOpened; // Protected by mGuard.
 
         ActivityContainerWrapper(IActivityContainer container) {
             mIActivityContainer = container;
+            mOpened = true;
             mGuard.open("release");
         }
 
@@ -424,11 +426,16 @@ public class ActivityView extends ViewGroup {
         }
 
         void release() {
-            if (DEBUG) Log.v(TAG, "ActivityContainerWrapper: release called");
-            try {
-                mIActivityContainer.release();
-                mGuard.close();
-            } catch (RemoteException e) {
+            synchronized (mGuard) {
+                if (mOpened) {
+                    if (DEBUG) Log.v(TAG, "ActivityContainerWrapper: release called");
+                    try {
+                        mIActivityContainer.release();
+                        mGuard.close();
+                    } catch (RemoteException e) {
+                    }
+                    mOpened = false;
+                }
             }
         }