retrofit2-NetworkCall.java

NetworkCall.java

private class NetworkCall extends AsyncTask<Call, Void, String> {
  @Override
  protected String doInBackground(Call… params) {
    try {
      Call<List<Contributor>> call = params[0];
      Response<List<Contributor>> response = call.execute();
      return response.body().toString();
    } catch (IOException e) {
      e.printStackTrace();
    }
    return null;
  }

  @Override
  protected void onPostExecute(String result) {
    final TextView textView = (TextView) findViewById(R.id.textView);
    textView.setText(result);
  }
}