Get HTTP status code for successful requests with Volley

Question

I'm retrieving the content of a invalid web address with volley, i.e. http://www.gigd32fdsu.com: This is my test code:

// Instantiate the RequestQueue.
RequestQueue queue = Volley.newRequestQueue(this);
final String url = "http://www.gigd32fdsu.com";

// Request a string response from the provided URL.
StringRequest stringRequest = new StringRequest(Request.Method.GET, url, 
new Response.Listener() {
    @Override
    public void onResponse(Object response) {
        // Display the first 500 characters of the response string.
        mTextView.setText("Response is: " + response.toString().substring(0, 500));
    }
}, new Response.ErrorListener() {
    @Override
    public void onErrorResponse(VolleyError error) {
        mTextView.setText("That didn't work! " + error.networkResponse.statusCode);
    }
});
// Add the request to the RequestQueue.
queue.add(stringRequest);

When I run this code I receive the callback onResponse(String) with an error page from my ISP. How can I read the HTTP status code in order to detect that the web displaying is not correct?

Thanks

Answer 1

Simple solution is to override parseNetworkResponse in makeStringReq(), no need for another class:

private void makeStringReq() {     showProgressDialog();      StringRequest strReq = new StringRequest(Method.GET,             Const.URL_STRING_REQ,             new Response.Listener<String>() {                 @Override                 public void onResponse(String response) {                     Log.d(TAG, response.toString());                     msgResponse.setText(response.toString());                     hideProgressDialog();                  }             },             new Response.ErrorListener() {                 @Override                 public void onErrorResponse(VolleyError error) {                     VolleyLog.d(TAG, "Error: " + error.getMessage());                     hideProgressDialog();                 }             }) {          @Override         protected Response<String> parseNetworkResponse(NetworkResponse response) {             int mStatusCode = response.statusCode;             return super.parseNetworkResponse(response);         }     };      // Adding request to request queue     AppController.getInstance().addToRequestQueue(strReq, tag_string_req);  } 

Answer 2

I will make the response from VinceStyling more complete. I'll tell you what I do.

Once you override this method, save the statusCode in your class.

        @Override
        protected Response<String> parseNetworkResponse(NetworkResponse response) {
            statusCode=response.statusCode;
            return super.parseNetworkResponse(response);
        }

After that you should compare it with HttpURLConnection constants to act accordingly. For example:

            int statusCode=webService.getStatusCode();
            switch (statusCode){
                case HttpURLConnection.HTTP_OK:
                    //do stuff
                    break;
                case HttpURLConnection.HTTP_NOT_FOUND:
                    //do stuff
                    break;
                case HttpURLConnection.HTTP_INTERNAL_ERROR:
                    //do stuff
                    break;
            }

Answer 3

Just override the parseNetworkResponse method then take the statusCode value.

public class StrImplRequest extends StringRequest {
    @Override
    protected Response<String> parseNetworkResponse(NetworkResponse response) {
        // take the statusCode here.
        response.statusCode;
        return super.parseNetworkResponse(response);
    }
}