How to differentiate between annotation pins?

Question

I have three pins on a mapview. I'd like to give each one a different color. In the delegate method viewForAnnotation, I'm doing this:

- (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>) annotation{
MKPinAnnotationView *annView=[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"anAddress"];
annView.pinColor = MKPinAnnotationColorGreen;
annView.animatesDrop=TRUE;
annView.canShowCallout = YES;
annView.calloutOffset = CGPointMake(-5, 5);
return annView;
}

I was thinking to create an array of MKPinAnnotationViews but how can I get the correct one since the delegate method isn't indexed to anything?

Answer 1

To distinguish between UIView, you can use the tag property and its corresponding viewWithTag: method.

However, in your context, I would recommend adding the color to your annotation class. Then you can ensure that you don't reuse the same caller for multiple pins.