Android Keeping Location Overlay in View

I am manually simulating GPS activity. Note how the location is always animated to be always centred in the map.

main.xml layout file:

 <?xml version="1.0" encoding="utf-8"?>
<!-- This file is /res/layout/main.xml -->
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent">
<com.google.android.maps.MapView
 android:id="@+id/geoMap" android:clickable="true"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:apiKey="XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
 />
</RelativeLayout>

main activity file:

 package com.mld;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import com.google.android.maps.MyLocationOverlay;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.widget.Toast;
public class MyLocationDemo extends MapActivity {
MapView mapView = null;
MyLocationOverlay whereAmI = null;
LocationManager locMgr = null;
LocationListener locListener = null;
@Override
protected boolean isLocationDisplayed() {
 return whereAmI.isMyLocationEnabled();
}
@Override
protected boolean isRouteDisplayed() {
 return false;
}
@Override
public void onCreate(Bundle savedInstanceState)
{
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);
 mapView = (MapView)findViewById(R.id.geoMap);
 mapView.setBuiltInZoomControls(true);
 mapView.getController().setZoom(15);
 whereAmI = new MyLocationOverlay(this, mapView);
 mapView.getOverlays().add(whereAmI);
 mapView.postInvalidate();
 locMgr = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
 locListener = new LocationListener()
 {
   public void onLocationChanged(Location location)
   {
        showLocation(location);
   }
   public void onProviderDisabled(String provider)
   {
   }
   public void onProviderEnabled(String provider)
   {
   }
   public void onStatusChanged(String provider,
     int status, Bundle extras)
   {
   }
 };
}
@Override
public void onResume()
{
 super.onResume();
 Location lastLoc = locMgr.getLastKnownLocation(LocationManager.GPS_PROVIDER);
 showLocation(lastLoc);
 locMgr.requestLocationUpdates(
   LocationManager.GPS_PROVIDER,
   1000,               // minTime in ms
   1,               // minDistance in meters
   locListener);
 whereAmI.enableMyLocation();
 whereAmI.runOnFirstFix(new Runnable() {
   public void run() {
     mapView.getController().setCenter(whereAmI.getMyLocation());
   }
 });
}
@Override
public void onPause()
{
 super.onPause();
 locMgr.removeUpdates(locListener);
 whereAmI.disableMyLocation();
}
private void showLocation(Location location) {
 if (location != null)
 {
      double lat = location.getLatitude();
      double lng = location.getLongitude();
   GeoPoint myLocation = new GeoPoint(
     (int)(lat*1000000),
     (int)(lng*1000000));
   Toast.makeText(getBaseContext(),
     "New location latitude [" +
     lat + "] longitude [" + lng +"]",
     Toast.LENGTH_SHORT).show();
   mapView.getController().animateTo(myLocation);
 }
}
}