MKMapView GPS location question

I am a newbie.. I have a doubt in MapVi开发者_Go百科ew and CoreLocation. How to make the mapview to display "blue dot and circle animation" as in Locate Me action of Maps app? The solution may be very simple, but I don't have much idea about map in iPhone. Help me, pls.

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Try this

yourMapView.showsUserLocation=YES;

Put this in your viewforAnnotation Delegate

if (annotation == mapView.userLocation) 
{ 
    //You can customize the blue dot current location annotation here
    return nil; 
}