如何在MKMapview的注释中检测按钮？

Question

I recently added an info button to each of my annotations with the following code:

func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
        if annotation is MKUserLocation { return nil }

        if let annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: "") {
            annotationView.annotation = annotation
            return annotationView
        } else {
            let annotationView = MKPinAnnotationView(annotation:annotation, reuseIdentifier:"")
            annotationView.isEnabled = true
            annotationView.canShowCallout = true

            let btn = UIButton(type: .detailDisclosure)
            annotationView.rightCalloutAccessoryView = btn
            return annotationView
        }
    }

My question is how do I go about detecting when this button is pressed?

Answer 1

You need to set the delegate

self.mapView.delegate = self

And implement

func mapView(_ mapView: MKMapView, 
   annotationView view: MKAnnotationView, 
     calloutAccessoryControlTapped control: UIControl) {

     let anno = view.annotation as! AnnoatioClassName
     // do segue here
}