MapKit Annotations Disappearing

Question

I have an array of latitudes and another array of longitudes that I add to an array of type CLLocationCoordinate2D. I then use the new array to annotate multiple points on t

Answer 1

NiltiakSivad's solution works but it reverts to the old iOS 10 look. If you want to keep the new iOS 11 balloon markers for iOS 11 and use the old pin look only for older iOS versions then you can implement the delegate method as below:

func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
    let reuseIdentifier = "annotationView"
    var view = mapView.dequeueReusableAnnotationView(withIdentifier: reuseIdentifier)
    if #available(iOS 11.0, *) {
        if view == nil {
            view = MKMarkerAnnotationView(annotation: annotation, reuseIdentifier: reuseIdentifier)
        }
        view?.displayPriority = .required
    } else {
        if view == nil {
            view = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseIdentifier)
        }
    }
    view?.annotation = annotation
    view?.canShowCallout = true
    return view
}