public static void getDailyCheckinSettings(ResponseListener listener){
    String url = "https://yourdomain.com/api/get_daily_checkin_settings.php";

    StringRequest request = new StringRequest(Request.Method.GET, url,
        response -> listener.onSuccess(response),
        error -> listener.onError(error.getMessage())
    );

    Volley.newRequestQueue(App.getContext()).add(request);
}