title: Volley sending multiple requests tracking
body: <p>I  was going through volley library documentation with the following example</p>
  
  <pre><code>// Instantiate the RequestQueue.
  RequestQueue queue = Volley.newRequestQueue(this);
  String url ="http://www.google.com";
  
      // Request a string response from the provided URL.
      StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
                  new Response.Listener&lt;String&gt;() {
          @Override
          public void onResponse(String response) {
              // Display the first 500 characters of the response string.
              mTextView.setText("Response is: "+ response.substring(0,500));
          }
      }, new Response.ErrorListener() {
          @Override
          public void onErrorResponse(VolleyError error) {
              mTextView.setText("That didn't work!");
          }
      });
      // Add the request to the RequestQueue.
      queue.add(stringRequest);
  </code></pre>
  
  <p>My question is if i add an other request(similar request i.e. StringRequest) request to the queue, how can i map my request to response since the response is asynchronous.</p>
  
  <pre><code>1request --&gt; 1response.
  2request --&gt; 2response.
  </code></pre>
  
  <p>I don't have any priorities for request and should be done concurrently (not sequential requests).</p>