I am using this method for post on facebook but it return the below response

got response: 

> 
> {"error":{"message":"(#200) The user hasn't authorized the application
>  to perform this action","type":"OAuthException","code":200}}
> 
> 
> 

how to add permission and where? for post.

```
     public void postOnWall(String msg) {

        Log.d("Tests", "Testing graph API wall post");

         try {

                String response = facebook.request("me");

                Bundle parameters = new Bundle();

                parameters.putString("message", msg);

                parameters.putString("description", "test test test");

                response = facebook.request("me/feed", parameters, "POST");

                Log.d("Tests", "got response: " + response);

                if (response == null || response.equals("") || 
                        response.equals("false")) {
                   Log.v("Error", "Blank response");
               }

         } catch(Exception e) {
             e.printStackTrace();
         }
    }

```