สร้าง Map android Erroer ตรง .getMap(); ตรงเพิ่มส่วนอะไรครับ

package com.myapp;

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

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

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

public class MainActivity extends FragmentActivity {

	// Google Map
	private GoogleMap googleMap;
	
	// Latitude & Longitude
	private Double Latitude  = 13.844205;
	private Double Longitude  = 100.598856;

	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);	
		
		if(Latitude > 0 && Longitude > 0)
		{
            //*** Display Google Map
            googleMap = ((SupportMapFragment)getSupportFragmentManager()
                    .findFragmentById(R.id.googleMap)).getMap(); 
            
            LatLng coordinate = new LatLng(Latitude, Longitude);
            
            //*** Focus & Zoom
            googleMap.setMapType(com.google.android.gms.maps.GoogleMap.MAP_TYPE_HYBRID);
            googleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(coordinate, 17));
            
		}


	}

}

public class MainActivity extends FragmentActivity
    implements OnMapReadyCallback {
...
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    ...
}

MapFragment mapFragment = (MapFragment) getFragmentManager()
    .findFragmentById(R.id.map);
mapFragment.getMapAsync(this);