fixed android getLaunchArgs

android/app/src/main/java/com/reactnativenavigation/controllers/NavigationCommandsHandler.java

 
     public static void getLaunchArgs(Promise promise) {
         Bundle bundle = LaunchArgs.instance.get();
-        promise.resolve(bundle);
+        promise.resolve(Arguments.fromBundle(bundle));
     }
 }

android/app/src/main/java/com/reactnativenavigation/react/LaunchArgs.java

     private Bundle launchArgs;
 
     public void set(Intent intent) {
-        if (intent != null && intent.getExtras() != null && launchArgs != null) {
+        if (intent != null && intent.getExtras() != null && launchArgs == null) {
             this.launchArgs = intent.getExtras();
         }
     }