显示地图.java

PolylineOptions rectLine = null;
            if(result.equalsIgnoreCase("exception caught")){
                Toast.makeText(getApplicationContext(), "INVALID VALUES", Toast.LENGTH_LONG).show();
            }
            else{
            if (weakRef.get() != null && ! weakRef.get().isFinishing()){

        //  if(response.equalsIgnoreCase("Success")){
                ArrayList<LatLng> directionPoint = v2GetRouteDirection.getDirection(document);
                int duration = v2GetRouteDirection.getDurationValue(document);
                Log.e("TRAFFIC DURATIONTIME",""+duration);
                int trfficClearTime = v2GetRouteDirection.getDistanceValue(document);
                Log.e("TRAFFIC TIME", ""+trfficClearTime);

                Markeropition.position(myposition).icon(BitmapDescriptorFactory
                        .defaultMarker(BitmapDescriptorFactory.HUE_RED))
                          .flat(true);
                Markeropition2.position(myposition2).icon(BitmapDescriptorFactory
                             .defaultMarker(BitmapDescriptorFactory.HUE_AZURE))
                             .flat(true);
                Markeropition.draggable(true);
                Markeropition2.draggable(true);
                googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(myposition,10)); 
               googleMap.addMarker(Markeropition);
                googleMap.addMarker(Markeropition2);



                    rectLine = new PolylineOptions().width(5).color(Color.RED);

                    for (int i = 0; i < directionPoint.size(); i++) {

                        rectLine.add(directionPoint.get(i));

                    }
                googleMap.addPolyline(rectLine);


                  showDirection.setText("");
                       // Convert from Unicode to UTF-8
                    ArrayList<String> dir = v2GetRouteDirection.getDirectionPanel(document);
                    if(dir.size()!=0){
                    for(int i=0;i<dir.size();i++){
                     String goDirections=dir.get(i).replaceAll("\\<.*?>","");
                     showDirection.append(goDirections+"\n");
                     Log.e("SIZE", ""+dir.size());
                       Log.e("PANEL", goDirections);
                    }
                    }
                    else{
                        Toast.makeText(getApplicationContext(), "no value", Toast.LENGTH_LONG).show();
                    }

                    String alter = v2GetRouteDirection.getAlternativeRoutes(document);

                    Log.e("ALTER", alter);

                    }
            }

gmpv2路线.java（用于绘制路线）

public class GMapv2Direction {

    public final static String MODE_DRIVING = "driving";
    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 
                + "&destination=" + end.latitude + "," + end.longitude
                + "&sensor=false&units=metric&mode=driving&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(nl1.getLength() - 1);
          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(nl1.getLength() - 1);
        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("StartAddress", node1.getTextContent());
        return node1.getTextContent();
    }
    public ArrayList<String> getDirectionPanel(Document doc){
        Node node1 = null;
        ArrayList<String> arry = new ArrayList<String>();
        NodeList nl1 = doc.getElementsByTagName("html_instructions");

        for(int i = 0;i<nl1.getLength();i++){
        node1 = nl1.item(i);
        arry.add(node1.getTextContent());

        Log.i("DIRECTION PANEL", node1.getTextContent());

        }
        return arry;
    }
   public String getAlternativeRoutes(Document doc){


      NodeList nl1;
      Node  firstNode=null;
      Node first = null;
      NodeList nodeList = doc.getElementsByTagName("route");
      if(nodeList.getLength()>0){
          for(int j=0;j<nodeList.getLength();j++){

              Node node1 = nodeList.item(j);
              nl1 = node1.getChildNodes();
              first = nl1.item(getNodeIndex(nl1, "summary"));
              Log.e("FIRST", first.getTextContent());
          }




      }
      return first.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<LatLng> getDirection (Document doc) {
        NodeList nl1, nl2, nl3;
        ArrayList<LatLng> listGeopoints = new ArrayList<LatLng>();
        nl1 = doc.getElementsByTagName("step");
        if (nl1.getLength() > 0) {
            for (int i = 0; i < 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<LatLng> arr = decodePoly(latNode.getTextContent());
                for(int j = 0  ; j < 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));

                locationNode = nl2.item(getNodeIndex(nl2, "start_location"));
            }
        }


        return listGeopoints;
    }


    private int getNodeIndex(NodeList nl, String nodename) {
        for(int i = 0 ; i < nl.getLength() ; i++) {
            if(nl.item(i).getNodeName().equals(nodename))
                return i;
        }
        return -1;
    }


    private ArrayList<LatLng> decodePoly(String encoded) {
        ArrayList<LatLng> poly = new ArrayList<LatLng>();
        int index = 0, len = encoded.length();
        int lat = 0, lng = 0;
        while (index < len) {
            int b, shift = 0, result = 0;
            do {
                b = encoded.charAt(index++) - 63;
                result |= (b & 0x1f) << shift;
                shift += 5;
            } while (b >= 0x20);
            int dlat = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
            lat += dlat;
            shift = 0;
            result = 0;
            do {
                b = encoded.charAt(index++) - 63;
                result |= (b & 0x1f) << shift;
                shift += 5;
            } while (b >= 0x20);
            int dlng = ((result & 1) != 0 ? ~(result >> 1) : (result >> 1));
            lng += dlng;


            LatLng position = new LatLng((double) lat / 1E5, (double) lng / 1E5);
            poly.add(position);
        }
        return poly;
    }


}

提前感谢！