Now that we have good hands-on experience with Annotations and Annotation Views, let's explore the full power of Annotation Views by creating our own custom Marker. We will be creating flag-based markers for cities, so if you create an annotation with Mumbai's latitude and longitude values, the annotation will show the Indian Flag, and when we create an Annotation with a San Francisco co-ordinate, it will show the American flag.
Hello_LocationViewController.hfile, add a
MKPointAnnotation *mumbaiAnnotation; and expose it as a property
@property (retain,nonatomic) MKPointAnnotation ...