Get MKPointAnnotation title - ios

Question

I've created a MKMapView which contains several MKPointAnnotations on the map. When the user clicks the UIButton in the view I would like to print the title in the log. How can I do that? So far I have this:
func mapView(mapView: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {
if annotation is MKUserLocation {
//return nil so map view draws "blue dot" for standard user location
return nil
}
let reuseId = "pin"
var pinView = mapView.dequeueReusableAnnotationViewWithIdentifier(reuseId) as? MKPinAnnotationView
if pinView == nil {
pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseId)
pinView!.canShowCallout = true
pinView!.animatesDrop = true
pinView!.pinColor = .Purple
var rightButton: AnyObject! = UIButton.buttonWithType(UIButtonType.DetailDisclosure)
//MapPointAnnotation *point = (MapPointAnnotation*)pinView.annotation;
//rightButton.venue = point.venue;
rightButton.titleForState(UIControlState.Normal)
rightButton.addTarget(self, action: "rightButtonTapped:", forControlEvents: UIControlEvents.TouchUpInside)
pinView!.rightCalloutAccessoryView = rightButton as UIView
}
else {
pinView!.annotation = annotation
}
return pinView
}
func rightButtonTapped(sender: AnyObject) {
}

Answer 1

In the custom rightButtonTapped method, an easy and reliable way to get a reference to the annotation that was tapped is to use the map view's selectedAnnotations array:
func rightButtonTapped(sender: AnyObject) {
if self.mapView.selectedAnnotations?.count == 0 {
//no annotation selected
return;
}
if let ann = self.mapView.selectedAnnotations[0] as? MKAnnotation {
println("\(ann.title!)")
}
}
(Even though selectedAnnotations is an array, the map view only allows one annotation to be "selected" at a time so the currently selected annotation is always at index 0.)
However, a better way than using a custom button method is to use the map view's calloutAccessoryControlTapped delegate method. The delegate method passes you a reference to the annotation view that was tapped from which you can easily get the underlying annotation.
To use the delegate method, remove the addTarget line for your custom method:
//Do NOT call addTarget if you want to use the calloutAccessoryControlTapped
//delegate method instead of a custom button method.
//rightButton.addTarget(self, action: "rightButtonTapped:", forControlEvents: UIControlEvents.TouchUpInside)
and then implement the delegate method instead of your custom button method:
func mapView(mapView: MKMapView!, annotationView view: MKAnnotationView!, calloutAccessoryControlTapped control: UIControl!) {
println("\(view.annotation.title!)")
}