diff --git a/services/core/java/com/android/server/wm/AppWindowToken.java b/services/core/java/com/android/server/wm/AppWindowToken.java
index 77a29f3..77b7f2e 100644
--- a/services/core/java/com/android/server/wm/AppWindowToken.java
+++ b/services/core/java/com/android/server/wm/AppWindowToken.java
@@ -269,6 +269,10 @@
         return candidate;
     }
 
+    boolean stackCanReceiveKeys() {
+        return (windows.size() > 0) ? windows.get(windows.size() - 1).stackCanReceiveKeys() : false;
+    }
+
     boolean isVisible() {
         final int N = allAppWindows.size();
         for (int i=0; i<N; i++) {