Android draw route between two geo location MapV2

Android Draw route between two geo location MapV2

This post about draw route between two geo location using google map V2.

When I use the google map V2 its loading two fast.

I hope this post helpful for you

Screen Shot

 

Activity Source Code

package com.androidbunch.drawroutev2;

import java.util.ArrayList;

import java.util.List;

import org.w3c.dom.Document;

import com.google.android.gms.maps.CameraUpdateFactory;

import com.google.android.gms.maps.GoogleMap;

import com.google.android.gms.maps.SupportMapFragment;

import com.google.android.gms.maps.model.LatLng;

import com.google.android.gms.maps.model.MarkerOptions;

import com.google.android.gms.maps.model.PolylineOptions;

import com.google.android.maps.GeoPoint;

import com.google.android.maps.Overlay;

import android.location.Location;

import android.location.LocationManager;

import android.os.AsyncTask;

import android.os.Bundle;

import android.app.ProgressDialog;

import android.graphics.Color;

import android.graphics.drawable.Drawable;

import android.support.v4.app.FragmentActivity;

/**

 *

 * @author VIJAYAKUMAR M

 *This class for display route current location to hotel location on google map V2

 */

public class MainActivity extends FragmentActivity  {

     

      List<Overlay> mapOverlays;

      GeoPoint point1, point2;

      LocationManager locManager;

      Drawable drawable;

      Document document;

      GMapV2GetRouteDirection v2GetRouteDirection;

      LatLng fromPosition;

      LatLng toPosition;

      GoogleMap mGoogleMap;

      MarkerOptions markerOptions;

      Location location ;

      @Override

      protected void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.activity_main);

            v2GetRouteDirection = new GMapV2GetRouteDirection();

          SupportMapFragment supportMapFragment = (SupportMapFragment) getSupportFragmentManager()

            .findFragmentById(R.id.map);

            mGoogleMap = supportMapFragment.getMap();

            // Enabling MyLocation in Google Map

            mGoogleMap.setMyLocationEnabled(true);

            mGoogleMap.getUiSettings().setZoomControlsEnabled(true);

            mGoogleMap.getUiSettings().setCompassEnabled(true);

            mGoogleMap.getUiSettings().setMyLocationButtonEnabled(true);

            mGoogleMap.getUiSettings().setAllGesturesEnabled(true);

            mGoogleMap.setTrafficEnabled(true);

            mGoogleMap.animateCamera(CameraUpdateFactory.zoomTo(12));

            markerOptions = new MarkerOptions();

            fromPosition = new LatLng(11.663837, 78.147297);

            toPosition = new LatLng(11.723512, 78.466287);

            GetRouteTask getRoute = new GetRouteTask();

            getRoute.execute();

      }

      /**

       *

       * @author VIJAYAKUMAR M

       * This class Get Route on the map

       *

       */

      private class GetRouteTask extends AsyncTask<String, Void, String> {

           

            private ProgressDialog Dialog;

            String response = "";

            @Override

            protected void onPreExecute() {

                  Dialog = new ProgressDialog(MainActivity.this);

                  Dialog.setMessage("Loading route...");

                  Dialog.show();

            }

            @Override

            protected String doInBackground(String... urls) {

                  //Get All Route values

                        document = v2GetRouteDirection.getDocument(fromPosition, toPosition, GMapV2GetRouteDirection.MODE_DRIVING);

                        response = "Success";

                  return response;

            }

            @Override

            protected void onPostExecute(String result) {

                  mGoogleMap.clear();

                  if(response.equalsIgnoreCase("Success")){

                  ArrayList<LatLng> directionPoint = v2GetRouteDirection.getDirection(document);

                  PolylineOptions rectLine = new PolylineOptions().width(10).color(

                              Color.RED);

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

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

                  }

                  // Adding route on the map

                  mGoogleMap.addPolyline(rectLine);

                  markerOptions.position(toPosition);

                  markerOptions.draggable(true);

                  mGoogleMap.addMarker(markerOptions);

                  }

                 

                  Dialog.dismiss();

            }

      }

      @Override

      protected void onStop() {

            super.onStop();

            finish();

      }

}

Draw Route Helper Class

package com.androidbunch.drawroutev2;

import java.io.InputStream;

import java.util.ArrayList;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import org.apache.http.HttpResponse;

import org.apache.http.client.HttpClient;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.protocol.BasicHttpContext;

import org.apache.http.protocol.HttpContext;

import org.w3c.dom.Document;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

import com.google.android.gms.maps.model.LatLng;

import android.util.Log;

public class GMapV2GetRouteDirection {

    public final static String MODE_DRIVING = "driving";

    public final static String MODE_WALKING = "walking";

    public GMapV2GetRouteDirection() { }

    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";

        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("StartAddress", 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<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));

            }

        }

        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;

    }

}

 Xml source Code

 activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    tools:context=".MainActivity" >

    <fragment

        android:id="@+id/map"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        class="com.google.android.gms.maps.SupportMapFragment" />

</RelativeLayout> 

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.androidbunch.drawroutev2"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="16" />

    <supports-screens

        android:anyDensity="true"

        android:largeScreens="true"

        android:normalScreens="true"

        android:resizeable="true"

        android:smallScreens="true" />

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@android:style/Theme.NoTitleBar" >

        <meta-data

            android:name="com.google.android.maps.v2.API_KEY"

            android:value="AIzaSyBE-ZNBoODzqQoA2BMswmoEWAeHMSvgt3M" />

        <activity

            android:name="com.androidbunch.drawroutev2.MainActivity"

            android:label="@string/app_name"

            android:screenOrientation="landscape" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

    <permission

        android:name="com.androidbunch.drawroutev2.permission.MAPS_RECEIVE"

        android:protectionLevel="signature" />

    <uses-feature

        android:glEsVersion="0x00020000"

        android:required="true" />

    <uses-permission android:name="com.androidbunch.drawroutev2.permission.MAPS_RECEIVE" />

    <uses-permission android:name="android.permission.INTERNET" />

    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />

    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

</manifest>