How to trigger MKAnnotationView's callout view without touching the pin?

Question

I\'m working on a MKMapView with the usual colored pin as the location points. I would like to be able to have the callout displayed without touching the pin.

Answer 1

Resetting the annotations also will bring the callout to front.

    [mapView removeAnnotation: currentMarker];
    [mapView addAnnotation:currentMarker];