title: Volley not appearing on Android Studios
body: <p>I am trying to follow a tutorial on parsing XML data, however he uses a requestQueue and initiates it using Volley. 
  For some reason when I try to use <code>Volley.newRequestQueue(this);</code>, android studio doesn't seem to register Volley as a thing and registers as an error.
  Any help would be greatly appreciated!</p>
  
  <pre><code>protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_second_maps);
      // Obtain the SupportMapFragment and get notified when the map is ready to be used.
      SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
              .findFragmentById(R.id.map);
      mapFragment.getMapAsync(this);
  
      requestQueue = Volley.newRequestQueue(this); 
  </code></pre>