title: Displaying multiple routes using Directions API in Android
body: <p>I am using this class to display a route on a map. The problem is that it only displays one route. What I want to do is display multiple alternate routes on the map. Even thought the server response has multiple routes, it only parses the first route and displays it. What changes should I make to display all the routes that the google server returns.Here is my class.</p>
  
  <pre><code>public class GMapV2Direction {
      public final static String MODE_DRIVING = "driving";
      public final static String MODE = "walking";
      public final static String MODE_WALKING = "walking";
  
      public GMapV2Direction() { }
  
      public Document getDocument(LatLng start, LatLng end, String mode) {
          String url = "http://maps.googleapis.com/maps/api/directions/xml?" 
                  + "origin=" + start.latitude + "," + start.longitude  
                  + "&amp;destination=" + end.latitude + "," + end.longitude 
                  + "&amp;sensor=false&amp;units=metric&amp;mode="+MODE+"alternatives=true";
  
          try {
              HttpClient httpClient = new DefaultHttpClient();
              HttpContext localContext = new BasicHttpContext();
              HttpPost httpPost = new HttpPost(url);
              HttpResponse response = httpClient.execute(httpPost, localContext);
              InputStream in = response.getEntity().getContent();
              DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
              Document doc = builder.parse(in);
              return doc;
          } catch (Exception e) {
              e.printStackTrace();
          }
          return null;
      }
  
      public String getDurationText (Document doc) {
          NodeList nl1 = doc.getElementsByTagName("duration");
          Node node1 = nl1.item(0);
          NodeList nl2 = node1.getChildNodes();
          Node node2 = nl2.item(getNodeIndex(nl2, "text"));
          Log.i("DurationText", node2.getTextContent());
          return node2.getTextContent();
      }
  
      public int getDurationValue (Document doc) {
  
          NodeList nl1 = doc.getElementsByTagName("duration");
          Node node1 = nl1.item(0);
          NodeList nl2 = node1.getChildNodes();
          Node node2 = nl2.item(getNodeIndex(nl2, "value"));
          Log.i("DurationValue", node2.getTextContent());
          return Integer.parseInt(node2.getTextContent());
  
      }
  
      public String getDistanceText (Document doc) {
          NodeList nl1 = doc.getElementsByTagName("distance");
          Node node1 = nl1.item(0);
          NodeList nl2 = node1.getChildNodes();
          Node node2 = nl2.item(getNodeIndex(nl2, "text"));
          Log.i("DistanceText", node2.getTextContent());
          return node2.getTextContent();
      }
  
      public int getDistanceValue (Document doc) {
          NodeList nl1 = doc.getElementsByTagName("distance");
          Node node1 = nl1.item(0);
          NodeList nl2 = node1.getChildNodes();
          Node node2 = nl2.item(getNodeIndex(nl2, "value"));
          Log.i("DistanceValue", node2.getTextContent());
          return Integer.parseInt(node2.getTextContent());
      }
  
      public String getStartAddress (Document doc) {
          NodeList nl1 = doc.getElementsByTagName("start_address");
          Node node1 = nl1.item(0);
          Log.i("StartAddress", node1.getTextContent());
          return node1.getTextContent();
      }
  
      public String getEndAddress (Document doc) {
          NodeList nl1 = doc.getElementsByTagName("end_address");
          Node node1 = nl1.item(0);
          Log.i("EndAddress", node1.getTextContent());
          return node1.getTextContent();
      }
  
      public String getCopyRights (Document doc) {
          NodeList nl1 = doc.getElementsByTagName("copyrights");
          Node node1 = nl1.item(0);
          Log.i("CopyRights", node1.getTextContent());
          return node1.getTextContent();
      }
  
      public ArrayList&lt;LatLng&gt; getDirection (Document doc) {
          NodeList nl1, nl2, nl3;
          ArrayList&lt;LatLng&gt; listGeopoints = new ArrayList&lt;LatLng&gt;();
          nl1 = doc.getElementsByTagName("step");
          if (nl1.getLength() &gt; 0) {
              for (int i = 0; i &lt; nl1.getLength(); i++) {
                  Node node1 = nl1.item(i);
                  nl2 = node1.getChildNodes();
  
                  Node locationNode = nl2.item(getNodeIndex(nl2, "start_location"));
                  nl3 = locationNode.getChildNodes();
                  Node latNode = nl3.item(getNodeIndex(nl3, "lat"));
                  double lat = Double.parseDouble(latNode.getTextContent());
                  Node lngNode = nl3.item(getNodeIndex(nl3, "lng"));
                  double lng = Double.parseDouble(lngNode.getTextContent());
                  listGeopoints.add(new LatLng(lat, lng));
  
                  locationNode = nl2.item(getNodeIndex(nl2, "polyline"));
                  nl3 = locationNode.getChildNodes();
                  latNode = nl3.item(getNodeIndex(nl3, "points"));
                  ArrayList&lt;LatLng&gt; arr = decodePoly(latNode.getTextContent());
                  for(int j = 0 ; j &lt; arr.size() ; j++) {
                      listGeopoints.add(new LatLng(arr.get(j).latitude, arr.get(j).longitude));
                  }
  
                  locationNode = nl2.item(getNodeIndex(nl2, "end_location"));
                  nl3 = locationNode.getChildNodes();
                  latNode = nl3.item(getNodeIndex(nl3, "lat"));
                  lat = Double.parseDouble(latNode.getTextContent());
                  lngNode = nl3.item(getNodeIndex(nl3, "lng"));
                  lng = Double.parseDouble(lngNode.getTextContent());
                  listGeopoints.add(new LatLng(lat, lng));
              }
          }
  
          return listGeopoints;
      }
  
      private int getNodeIndex(NodeList nl, String nodename) {
          for(int i = 0 ; i &lt; nl.getLength() ; i++) {
              if(nl.item(i).getNodeName().equals(nodename))
                  return i;
          }
          return -1;
      }
  
      private ArrayList&lt;LatLng&gt; decodePoly(String encoded) {
          ArrayList&lt;LatLng&gt; poly = new ArrayList&lt;LatLng&gt;();
          int index = 0, len = encoded.length();
          int lat = 0, lng = 0;
          while (index &lt; len) {
              int b, shift = 0, result = 0;
              do {
                  b = encoded.charAt(index++) - 63;
                  result |= (b &amp; 0x1f) &lt;&lt; shift;
                  shift += 5;
              } while (b &gt;= 0x20);
              int dlat = ((result &amp; 1) != 0 ? ~(result &gt;&gt; 1) : (result &gt;&gt; 1));
              lat += dlat;
              shift = 0;
              result = 0;
              do {
                  b = encoded.charAt(index++) - 63;
                  result |= (b &amp; 0x1f) &lt;&lt; shift;
                  shift += 5;
              } while (b &gt;= 0x20);
              int dlng = ((result &amp; 1) != 0 ? ~(result &gt;&gt; 1) : (result &gt;&gt; 1));
              lng += dlng;
  
              LatLng position = new LatLng((double) lat / 1E5, (double) lng / 1E5);
              poly.add(position);
          }
          return poly;
      }
  }
  </code></pre>