1 files changed, 2 insertions, 2 deletions
diff --git a/core/java/android/app/ActivityManagerNative.java b/core/java/android/app/ActivityManagerNative.java
index 9f1b56e5b8c8..44c74d817b9d 100644
--- a/core/java/android/app/ActivityManagerNative.java
+++ b/core/java/android/app/ActivityManagerNative.java
@@ -2029,7 +2029,7 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
             data.enforceInterface(IActivityManager.descriptor);
             IBinder parentActivityToken = data.readStrongBinder();
             IActivityContainerCallback callback =
-                    (IActivityContainerCallback) data.readStrongBinder();
+                    IActivityContainerCallback.Stub.asInterface(data.readStrongBinder());
             IActivityContainer activityContainer =
                     createActivityContainer(parentActivityToken, callback);
             reply.writeNoException();
@@ -4744,7 +4744,7 @@ class ActivityManagerProxy implements IActivityManager
         Parcel reply = Parcel.obtain();
         data.writeInterfaceToken(IActivityManager.descriptor);
         data.writeStrongBinder(parentActivityToken);
-        data.writeStrongBinder((IBinder)callback);
+        data.writeStrongBinder(callback == null ? null : callback.asBinder());
         mRemote.transact(CREATE_ACTIVITY_CONTAINER_TRANSACTION, data, reply, 0);
         reply.readException();
         final int result = reply.readInt();