How to detect taps on MKPolylines/Overlays like Maps.app?

Question

When displaying directions on the built-in Maps.app on the iPhone you can \"select\" one of the usually 3 route alternatives that are displayed by tapping on it. I wan\'t to

Answer 1

It's an old thread however I found a different way which may help anyone. Tested on multiple routes overlay in Swift 4.2.

 @IBAction func didTapGesture(_ sender: UITapGestureRecognizer) {
        let touchPoint = sender.location(in: mapView)
        let touchCoordinate = mapView.convert(touchPoint, toCoordinateFrom: mapView)
        let mapPoint = MKMapPoint(touchCoordinate)

        for overlay in mapView.overlays {
            if overlay is MKPolyline {
                if let polylineRenderer = mapView.renderer(for: overlay) as? MKPolylineRenderer {
                    let polylinePoint = polylineRenderer.point(for: mapPoint)

                    if polylineRenderer.path.contains(polylinePoint) {
                        print("polyline was tapped")
                    }
                }
            }
        }
 }