Android Google Map : Adding Multiple Marker (Latitude, Longitude)

package com.myapp;

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.MarkerOptions;

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;

import java.util.ArrayList;
import java.util.HashMap;

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

public class MainActivity extends FragmentActivity {

	// Google Map
	private GoogleMap googleMap;

	// Latitude & Longitude
	private Double Latitude = 0.00;
	private Double Longitude = 0.00;

	ArrayList<HashMap<String, String>> location = new ArrayList<HashMap<String, String>>();
	HashMap<String, String> map;

	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		// Location 1
		map = new HashMap<String, String>();
		map.put("LocationID", "1");
		map.put("Latitude", "13.860633");
		map.put("Longitude", "100.612155");
		map.put("LocationName", "Ladplakao 76");
		location.add(map);

		// Location 2
		map = new HashMap<String, String>();
		map.put("LocationID", "2");
		map.put("Latitude", "13.858747");
		map.put("Longitude", "100.610996");
		map.put("LocationName", "Ladplakao 70");
		location.add(map);

		// Location 3
		map = new HashMap<String, String>();
		map.put("LocationID", "3");
		map.put("Latitude", "13.863903");
		map.put("Longitude", "100.614343");
		map.put("LocationName", "Ladplakao 80");
		location.add(map);

		// *** Display Google Map
		googleMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.googleMap)).getMap();

		// *** Focus & Zoom
		Latitude = Double.parseDouble(location.get(0).get("Latitude").toString());
		Longitude = Double.parseDouble(location.get(0).get("Longitude").toString());
		LatLng coordinate = new LatLng(Latitude, Longitude);
		googleMap.setMapType(com.google.android.gms.maps.GoogleMap.MAP_TYPE_HYBRID);
		googleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(coordinate, 17));

		// *** Marker (Loop)
		for (int i = 0; i < location.size(); i++) {
			Latitude = Double.parseDouble(location.get(i).get("Latitude").toString());
			Longitude = Double.parseDouble(location.get(i).get("Longitude").toString());
			String name = location.get(i).get("LocationName").toString();
			MarkerOptions marker = new MarkerOptions().position(new LatLng(Latitude, Longitude)).title(name);
			marker.icon(BitmapDescriptorFactory.fromResource(R.drawable.marker));
			googleMap.addMarker(marker);
		}

	}

}