new GraphRequest(
            AccessToken.getCurrentAccessToken(), "me?fields=friends,name", null, HttpMethod.GET,
            new GraphRequest.Callback() {
                public void onCompleted(GraphResponse response) {

                    JSONObject object = response.getJSONObject();
                    try {
                        friends = object.getJSONObject("friends").getJSONObject("summary").getString("total_count");
                    } catch (JSONException e) {
                        e.printStackTrace();
                    };

                }
            }
    ).executeAsync();

    return friends;

}