diff --git a/app/src/main/java/com/hnjc/wjtx/MainActivity.java b/app/src/main/java/com/hnjc/wjtx/MainActivity.java
index 6012066..e1a5f4d 100755
--- a/app/src/main/java/com/hnjc/wjtx/MainActivity.java
+++ b/app/src/main/java/com/hnjc/wjtx/MainActivity.java
@@ -198,9 +198,11 @@ public class MainActivity extends Activity {
                     finish();
                 }
             });
+            return true;
+        } else {
+            return super.onKeyDown(keyCode, keyEvent);
         }
 
-        return super.onKeyDown(keyCode, keyEvent);
     }
 
     private void setExternalInterfaces() {