Connection Timeout Android

i have an android app in which i hit a web service and gets the result. Now i want is if result is getting to long to be fetched or in between request internet connection is gone then i show a message or a dialog to the user that Your connection timed out I've tried this code but this is not working Any help would be appreciated

blic void getVolleyTask(Context context,
        final IVolleyReponse responseContext, String URL) {
    RequestQueue request = Volley.newRequestQueue(context);
    StringRequest strReq = new StringRequest(Request.Method.GET, URL,
            new Response.Listener<String>() {

                @Override
                public void onResponse(String response) {
                    try {
                        if (response != null) {
                            JSONArray _array = new JSONArray(response);
                            responseContext.ResponseOk(_array);
                        } else {
                            responseContext.ResponseOk(null);
                        }
                    } catch (Exception e) {
                        e.printStackTrace();
                        responseContext.ResponseOk(null);
                    }
                }
            }, new Response.ErrorListener() {

                @Override
                public void onErrorResponse(VolleyError error) {
                    responseContext.ErrorBlock();
                }
            });
    strReq.setRetryPolicy(new DefaultRetryPolicy(socketTimeout, maxTries,
            DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
    request.add(strReq);
}


       public void getVolleyPostTask(Context context,
        final IVolleyJSONReponse jsonResponseContext, String URL,
        JSONObject obj) {
    RequestQueue request = Volley.newRequestQueue(context);
    JsonObjectRequest myRequest = new JsonObjectRequest(
            Request.Method.POST, URL, obj,
            new Response.Listener<JSONObject>() {
                @Override
                public void onResponse(JSONObject response) {
                    jsonResponseContext.ResponseOk(response);
                }
            }, new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    jsonResponseContext.ErrorBlock();
                }
            }) {

        @Override
        public Map<String, String> getHeaders() throws AuthFailureError {
            HashMap<String, String> headers = new HashMap<String, String>();
            headers.put("Content-Type", "application/json; charset=utf-8");
            return headers;
        }
    };
    myRequest.setRetryPolicy(new DefaultRetryPolicy(socketTimeout,
            maxTries, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
    request.add(myRequest);
}

thanks in advance!