Android Maps Using Google Maps API V2

Since end of last year, Google launch Google Map API V2, so for Android programmer there's a new way to code about Map. In Google Map API V1 we just need a MapActivity, so on the V2 there's a different way to call the Map API.

Beofre starting your project, you must install Google Play Service from your Android SDK, and then import the Google Play Service Library to your project directory, If you don't do this step you can't import all com.google.android.xxx.

Here's same sample code to using Map on your Android Project.

 package com.ademahendramap;
  
 import java.util.List;  
 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.BitmapDescriptorFactory;  
 import com.google.android.gms.maps.model.LatLng;  
 import com.google.android.gms.maps.model.Marker;  
 import com.google.android.gms.maps.model.MarkerOptions;  
 import com.google.android.gms.maps.model.PolylineOptions;  
 import android.content.Context;  
 import android.content.Intent;  
 import android.graphics.Color;  
 import android.location.Criteria;  
 import android.location.Location;  
 import android.location.LocationListener;  
 import android.location.LocationManager;  
 import android.os.Bundle;  
 import android.provider.Settings;  
 import android.support.v4.app.FragmentActivity;  
 import android.util.Log;  
 import android.widget.Toast;  

 public class MapDirection extends FragmentActivity implements LocationListener {  
   private GoogleMap map;  
   private static final LatLng Malang = new LatLng(-7.955888,112.63481);  
   private LocationManager locationManager;  
   private String provider;  

   @Override  
   protected void onCreate(Bundle savedInstanceState) {  
     super.onCreate(savedInstanceState);  
     setContentView(R.layout.map_direction);  
      
     map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();  
     LocationManager service = (LocationManager) getSystemService(LOCATION_SERVICE);  
     boolean enabledGPS = service  
         .isProviderEnabled(LocationManager.GPS_PROVIDER);  
     boolean enabledWiFi = service  
         .isProviderEnabled(LocationManager.NETWORK_PROVIDER);  
     // Check if enabled and if not send user to the GSP settings  
     // Better solution would be to display a dialog and suggesting to   
     // go to the settings  
     if (!enabledGPS) {  
       Toast.makeText(this, "GPS signal not found", Toast.LENGTH_LONG).show();  
       Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);  
       startActivity(intent);  
     }  
     locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);  
     // Define the criteria how to select the locatioin provider -> use  
     // default  
     Criteria criteria = new Criteria();  
     provider = locationManager.getBestProvider(criteria, false);  
     Location location = locationManager.getLastKnownLocation(provider);  
     // Initialize the location fields  
     if (location != null) {  
       Toast.makeText(this, "Current Provider " + provider,  
           Toast.LENGTH_SHORT).show();  
       onLocationChanged(location);  
     } else {  
       //do something  
     }  
   }  
 
   @Override  
   protected void onResume() {  
     super.onResume();  
     locationManager.requestLocationUpdates(provider, 400, 1, this);  
   }  

   @Override  
   protected void onPause() {  
     super.onPause();  
// Remove update of location listener
     locationManager.removeUpdates(this);  
   }  
   @Override  
   public void onLocationChanged(Location location) {  
     double lat = location.getLatitude();  
     double lng = location.getLongitude();  
  
     LatLng coordinate = new LatLng(lat, lng);  
      
     Marker startposition = map.addMarker(new MarkerOptions()  
     .position(coordinate)  
     .title("Start")  
     .snippet("Current Location")  
     .icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_launcher)));  
     
     //centering the map to your marker startposition
     map.animateCamera(CameraUpdateFactory.newLatLngZoom(coordinate, 12));  
   }  

   @Override  
   public void onProviderDisabled(String provider) {  
     // TODO Auto-generated method stub     }  

   @Override  
   public void onProviderEnabled(String provider) {  
     // TODO Auto-generated method stub     }  

   @Override  
   public void onStatusChanged(String provider, int status, Bundle extras) {  
     // TODO Auto-generated method stub  
   }  
 }  

and here's the xml

 <fragment xmlns:android="http://schemas.android.com/apk/res/android"  
 android:id="@+id/map"  
 android:layout_width="match_parent"  
 android:layout_height="match_parent"  
 class="com.google.android.gms.maps.SupportMapFragment"/>  

Okay, and don't forget to add some sting to your AndroidManifest.xml

             <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />  
           <uses-permission android:name="android.permission.INTERNET" />  
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />  
        <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />  
        <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />  
        <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />  
       <uses-feature  
            android:glEsVersion="0x00020000"  
            android:required="true"/>  
   <application  
     android:allowBackup="true"  
     android:icon="@drawable/ic_launcher"  
     android:label="@string/app_name"  
     android:theme="@style/AppTheme" >  
      <meta-data  
          android:name="com.google.android.maps.v2.API_KEY"  
          android:value="YOUR_API_KEY" />