Android Volley getting Error Response using WCF Service on localhost

Question

I'm trying to consume a WCF RESTful Service hosted in IIS on Android using Volley. I have the next code:

private static final String URL_BASE = "http://10.0.3.2/SimpleRESTServiceCRUD/BookService.svc";
private static final String URL_JSON = "/Books";

List<Book> items;
JsonObjectRequest jsArrayRequest;
private RequestQueue requestQueue;

public BookAdapter(Context context)
{
    super(context,0);

    requestQueue = Volley.newRequestQueue(context);

    JsonObjectRequest jsArrayRequest = new JsonObjectRequest(
            Request.Method.GET,
            URL_BASE + URL_JSON,
            null,
            new Response.Listener<JSONObject>() {
                @Override
                public void onResponse(JSONObject response) {

                    items = parseJson(response);
                    notifyDataSetChanged();
                }
            },
            new Response.ErrorListener() {

                @Override
                public void onErrorResponse(VolleyError error) {

                    Log.d(TAG, "Error on JSON response: " + error.getMessage());

                }
            }
    );
}

But when I'm debugging always get new Response.ErrorListener() BUT never gets into:

@Override
public void onErrorResponse(VolleyError error) {

    Log.d(TAG, "Error on JSON response: " + error.getMessage());

}

So I can't know what happened!! I'm using Genymotion Emulator, so I tried this Uris:

http://192.168.56.1/SimpleRESTServiceCRUD/BookService.svc
http://10.0.3.2/SimpleRESTServiceCRUD/BookService.svc

I even used the Mobile Browser to see if it's working, and I actually could get to the service.

If anyone could give me a hand I will really appreciate. Thanks!!

Answer 1

I think your request has not been sent to the WCF Service, because you don't have the following line:

requestQueue.add(jsArrayRequest);

So, update your code as the following:

public BookAdapter(Context context)
{
    super(context,0);

    requestQueue = Volley.newRequestQueue(context);

    JsonObjectRequest jsArrayRequest = new JsonObjectRequest(
            Request.Method.GET,
            URL_BASE + URL_JSON,
            null,
            new Response.Listener<JSONObject>() {
                @Override
                public void onResponse(JSONObject response) {

                    items = parseJson(response);
                    notifyDataSetChanged();
                }
            },
            new Response.ErrorListener() {

                @Override
                public void onErrorResponse(VolleyError error) {

                    Log.d(TAG, "Error on JSON response: " + error.getMessage());

                }
            }
    );

    requestQueue.add(jsArrayRequest);
}

Hope this helps!