title: How to use google direction api in ios?
body: <p>I am new in iOS, I want to use the google api direction services, i got the java script on google documentation, i also know how to run the simple java script in iOS using UIWebView, but still am unable to run the script given on google on following link : <a href="https://developers.google.com/maps/documentation/javascript/directions#TransitInformation" rel="nofollow">https://developers.google.com/maps/documentation/javascript/directions#TransitInformation</a></p>
  
  <p>I dont need to use MapView, I want to access the information only.</p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
  
  &lt;script type="text/javascript"
  
      var directionsDisplay;
      var directionsService = new google.maps.DirectionsService();
      var map;
  
      function initialize() {
          directionsDisplay = new google.maps.DirectionsRenderer();
          var chicago = new google.maps.LatLng(41.850033, -87.6500523);
          var mapOptions = {
              zoom:7,
              mapTypeId: google.maps.MapTypeId.ROADMAP,
              center: chicago
          }
          map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);
          directionsDisplay.setMap(map);
          directionsDisplay.setPanel(document.getElementById("directionsPanel"));
      };
  
      var root = function(diameter) {
          var start = document.getElementById("start").value;
          var end = document.getElementById("end").value;
          var request = {
              origin:start,
              destination:end,
              travelMode: google.maps.TravelMode.DRIVING
          };
          directionsService.route(request, function(response, status) {
                                  if (status == google.maps.DirectionsStatus.OK) {
                                  directionsDisplay.setDirections(response);
                                  }
                                  });
  
          return 100;
      };
  
  
  &lt;/script&gt;
  &lt;/head&gt;
  
  &lt;body&gt;
  
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>for testing i am just returning some value, but it is not giving me output, the function is called, but hangs somewhere in code</p>