Android-Get the current location using GPS and draw it in Maps

 This is a simple android application to find the current location and draw it in Mapview.

First you have get the Google Api keyhttps://developers.google.com/android/maps-api-signup

After getting the Api key try the below code..

Showmap.java

package com.example.showmap;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import java.util.Locale;

import com.google.android.maps.GeoPoint;

import com.google.android.maps.MapActivity;

import com.google.android.maps.MapController;

import com.google.android.maps.MapView;

import com.google.android.maps.Overlay;

import android.location.Address;

import android.location.Geocoder;

import android.location.Location;

import android.location.LocationListener;

import android.location.LocationManager;

import android.os.Bundle;

import android.app.Activity;

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.Canvas;

import android.graphics.Point;

import android.text.Editable;

import android.text.TextWatcher;

import android.util.Log;

import android.view.Menu;

import android.view.View;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.ArrayAdapter;

import android.widget.AutoCompleteTextView;

import android.widget.Toast;

public class Showmap extends MapActivity {

       private MapView mapView;

       private MapController mapController;

    private LocationManager locationManager;

    private LocationListener locationListener;

    @Override

    public void onCreate(Bundle savedInstanceState)

    {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.showmap);

       

   LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);   

       

        locationListener = new GPSLocationListener();

       

        locationManager.requestLocationUpdates

        ( LocationManager.GPS_PROVIDER,  0, 0,   locationListener);

       

        mapView = (MapView) findViewById(R.id.mapView);

       

        // enable Street view by default

        mapView.setStreetView(true);

       

        // enable to show Satellite view

        // mapView.setSatellite(true);

       

        // enable to show Traffic on map

        // mapView.setTraffic(true);

        mapView.setBuiltInZoomControls(true);   

        mapController = mapView.getController();

        mapController.setZoom(16);

    }

      

       protected boolean isRouteDisplayed() {

        return false;

    }

   

    private class GPSLocationListener implements LocationListener

    {

        @Override

        public void onLocationChanged(Location location) {

            if (location != null) {

                GeoPoint point = new GeoPoint(

                        (int) (location.getLatitude() * 1E6),

                        (int) (location.getLongitude() * 1E6));

               

//                Toast.makeText(getBaseContext(),

//                        "Latitude: " + location.getLatitude() +

//                        " Longitude: " + location.getLongitude(),

//                        Toast.LENGTH_SHORT).show();

             

                mapController.animateTo(point);

                mapController.setZoom(16);

               

                // add marker

                MapOverlay mapOverlay = new MapOverlay();

                     mapOverlay.setPointToDraw(point);

                     List<Overlay> listOfOverlays = mapView.getOverlays();

                     listOfOverlays.clear();

                     listOfOverlays.add(mapOverlay);

                String address = ConvertPointToLocation(point);

             

                Toast.makeText(getBaseContext(), address, Toast.LENGTH_SHORT).show();

                mapView.invalidate();

            }

        }

       

        public String ConvertPointToLocation(GeoPoint point)

        {  

              String address = "";

            Geocoder geoCoder = new Geocoder(

                    getBaseContext(), Locale.getDefault());

            try {

                List<Address> addresses = geoCoder.getFromLocation(

                     point.getLatitudeE6()  / 1E6,

                    point.getLongitudeE6() / 1E6, 1);

        

                      if (addresses.size() > 0) {

                          for (int index = 0; index < addresses.get(0).getMaxAddressLineIndex(); index++)

                            address += addresses.get(0).getAddressLine(index) + " ";

                          Log.i(address, address);

                      }

                     

            }

            catch (IOException e) {               

                e.printStackTrace();

            }  

           

            return address;

        }

        @Override

        public void onProviderDisabled(String provider) {

        }

        @Override

        public void onProviderEnabled(String provider) {

             

        }

        @Override

        public void onStatusChanged(String provider, int status, Bundle extras) {

        }

    }

   

    class MapOverlay extends Overlay

    {

       private GeoPoint pointToDraw;

       public void setPointToDraw(GeoPoint point) {

              pointToDraw = point;

       }

       public GeoPoint getPointToDraw()

       {

              return pointToDraw;

             

       }

      

        @Override

        public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when) {

            super.draw(canvas, mapView, shadow);                  

            // convert point to pixels

            Point screenPts = new Point();

            mapView.getProjection().toPixels(pointToDraw, screenPts);

           

            // add marker

            Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.marker);

            canvas.drawBitmap(bmp, screenPts.x, screenPts.y - 24, null); // 24 is the height of image       

            return true;

        }

    }

      

}

 main.xml

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

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

    android:layout_width="match_parent"

    android:layout_height="match_parent" >

   <com.google.android.maps.MapView

        android:id="@+id/mapView"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent"

        android:apiKey="0YxUAcdaf-88HoJUjDgQS29r9ZAoGKOII8zCXsg"

        android:clickable="true"

        android:enabled="true" />

    

</RelativeLayout>

 Add  

  <uses-library android:name="com.google.android.maps" />   in Android manifest

   and give permission 

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

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

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

 

Output