[SOLVED] Swift, how can I store a custom value for each dropped pin using MKPointAnnotation?

Swift, how can I store a custom value for each dropped pin using MKPointAnnotation?

I want to be able to store a custom value for each dropped pin using MKPointAnnotation. Specifically, I want to store some id with each pin and retrieve at calloutAccesoryControlTapped.

Solution

You'll have to subclass MKPointAnnotation with a property to store this custom value (I named it tag)

import UIKit
import MapKit
class CustomPointAnnotation: MKPointAnnotation {
    var tag: Int!
}

Creating pins:

let annotation = CustomPointAnnotation()
annotation.coordinate = CLLocationCoordinate2D(latitude: CLLocationDegrees(latitude), longitude: CLLocationDegrees(longitude))
            annotation.title = [insert name]
            annotation.tag = [insert tag]
            self.mapView.addAnnotation(annotation)

And in your mapView delegate's viewForAnnotation, after checking the dequeableAnnotation you do:

  if (annotation is CustomPointAnnotation) {
       pinView?.tag = (annotation as! CustomPointAnnotation).tag
  }