retrofit_call_example.java

Gson gson2 = new Gson();

        DataSurveyFasilitator a = gson2.fromJson (keySurvey, DataSurveyFasilitator.class);

        Log.d(TAG, "hasil add json aja: "+gson2.toJson(a));

        Call<DataSurveyFasilitator> call = service.postSurvey(a);

        // Asynchronously execute HTTP request
        call.enqueue(new Callback<DataSurveyFasilitator>() {
            @Override
            public void onResponse(Call<DataSurveyFasilitator> call, Response<DataSurveyFasilitator> response) {
                // http response status code + headers
                System.out.println("Response status code: " + response.code());
                System.out.println("response body aja : "+new Gson().toJson(response.body()));
                // isSuccess is true if response code => 200 and <= 300
                .....