Hackbook App Requests

import android.os.Bundle;
import android.widget.Toast;

Bundle params = new Bundle();
params.putString("message", getString(R.string.request_message));
Utility.mFacebook.dialog(Hackbook.this, "apprequests", params, new AppRequestsListener());

public class AppRequestsListener extends BaseDialogListener {

        @Override

        public void onComplete(Bundle values) {

            Toast toast = Toast.makeText(getApplicationContext(), "App request sent",

                    Toast.LENGTH_SHORT);

            toast.show();

        }

        @Override

        public void onFacebookError(FacebookError error) {

            Toast.makeText(getApplicationContext(), "Facebook Error: " + error.getMessage(),

                    Toast.LENGTH_SHORT).show();

        }

        @Override

        public void onCancel() {

            Toast toast = Toast.makeText(getApplicationContext(), "App request cancelled",

                    Toast.LENGTH_SHORT);

            toast.show();

        }

    }