public class DownloadListTask extends AsyncTask<String, Integer, String> {

    @Override
    protected String doInBackground(String... strings) {
        try {
            URL url = new URL(strings[0]+strings[1]+"/"+strings[2]+strings[3]);
            Log.d("URL",url.toString());
            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
            try{
                BufferedReader br = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
                StringBuilder stringBuilder = new StringBuilder();
                String line;
                while((line = br.readLine()) != null){
                    stringBuilder.append(line);
                }
                br.close();
                return stringBuilder.toString();
            }finally {

            }
        } catch (Exception e) {
            Log.e("FAILED TO LOAD",e.getMessage(),e);
        }
        return null;
    }

    protected void onPostExecute(String result){

    }
}