Hi,

I have my project on GitHub all source code can be used as you see fit: https://github.com/PhilStollery/BAB-Club-Search

The idea of the app is I download some XML for lat long locations and plot them on a Map. I'd love to use the new SwiftUI Map, but could not work out how to color pins or add interaction (buttons or callouts).

I then came here and used the MapView: UIViewRepresentable example. Thanks Hacker.

Since XCode Beta 5 the All dojos view is broken - anyone got any ideas what I've done wrong?

Thanks,

Phil.

Code is

import MapKit
import SwiftUI

struct MapView: UIViewRepresentable {
    @Binding var centerCoordinate: CLLocationCoordinate2D
    @Binding var selectedPlace: MKPointAnnotation?
    @Binding var showingPlaceDetails: Bool
    @Binding var annotations: [MKPointAnnotation]

    var locationManager = CLLocationManager()
    func setupManager() {
      locationManager.desiredAccuracy = kCLLocationAccuracyReduced
      locationManager.requestWhenInUseAuthorization()
    }

    func makeUIView(context: Context) -> MKMapView {
        let mapView = MKMapView()
        setupManager()
        mapView.isRotateEnabled = false
        mapView.delegate = context.coordinator
        mapView.showsUserLocation = true
        mapView.userTrackingMode = MKUserTrackingMode.follow
        return mapView
    }

    func updateUIView(_ view: MKMapView, context: Context) {
        if view.annotations.count < 2 {
            view.removeAnnotations(view.annotations)
            view.addAnnotations(annotations)
        }
    }

    func makeCoordinator() -> Coordinator {
        Coordinator(self)
    }

    class Coordinator: NSObject, MKMapViewDelegate {
        var parent: MapView

        init(_ parent: MapView) {
            self.parent = parent
        }

        func mapViewDidChangeVisibleRegion(_ mapView: MKMapView) {
            parent.centerCoordinate = mapView.centerCoordinate
        }

        func mapView(_ mapView: MKMapView, didUpdate userLocation: MKUserLocation) {
            let latDelta:CLLocationDegrees = 0.5
            let lonDelta:CLLocationDegrees = 0.5
            let span = MKCoordinateSpan(latitudeDelta: latDelta, longitudeDelta: lonDelta)
            let region = MKCoordinateRegion(center: userLocation.coordinate, span: span)
            mapView.setRegion(region, animated: true)
        }

        func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
            // this is our unique identifier for view reuse
            let identifier = "ClubDetails"

            // attempt to find a cell we can recycle
            var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: identifier) as? MKMarkerAnnotationView

            if annotationView == nil {
                // we didn't find one; make a new one
                annotationView = MKMarkerAnnotationView(annotation: annotation, reuseIdentifier: identifier)
            } else {
                // we have a view to reuse, so give it the new annotation
                annotationView?.annotation = annotation
            }

            // Colour all the dojos green, but leave the uses location as a red marker
            // The title will ebe Approximate Location or My Location, so jyst check the end of the string
            let title = (annotationView?.annotation?.title)!! as String
            if title.suffix(8) != "Location" {
                annotationView?.markerTintColor = UIColor.systemGreen
            }

            // allow this to show pop up information
            annotationView?.canShowCallout = true

            // attach an information button to the view
            annotationView?.rightCalloutAccessoryView = UIButton(type: .detailDisclosure)

            // whether it's a new view or a recycled one, send it back
            return annotationView
        }

        func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
            guard let placemark = view.annotation as? MKPointAnnotation else { return }

            parent.selectedPlace = placemark
            parent.showingPlaceDetails = true
        }
    }
}

Since XCode Beta 5 the All dojos view is broken - anyone got any ideas what I've done wrong?

What does "is broken" mean? What error(s) or unexplained behavior are you seeing? And can you post this "All dojos view" so we can see what's going on there?