Google Direciton API

    public Document getDocument(LatLng start, LatLng end, List<LatLng> wayPoints, TravelMode mode) {
        String url = "https://maps.googleapis.com/maps/api/directions/xml?"
                + "origin=" + start.latitude + "," + start.longitude
                + "&destination=" + end.latitude + "," + end.longitude
                + "&sensor=false&units=metric&mode=" + mode.toString().toLowerCase()
                + "&key=" + MyApplication.getInstance().getString(R.string.API_KEY_GOOGLE_GEO)
                ;
        if (wayPoints != null && wayPoints.size() > 0) {
            url += "&waypoints=";

            int size = wayPoints.size();
            for (int i = 0; i < size; i ++) {
                LatLng latLng = wayPoints.get(i);

                url += String.format("via:%.5f%%2C%.5f", latLng.latitude, latLng.longitude);
                if (i < size - 1) {
                    url += "%7C";
                }
            }
        }
        Log.d("url", url);
        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;
    }