Custom image as annotation pin with two different colour images - swift

Question

I'm trying to add a custom image for my pin annotations as well as change the colour of the custom images for some of the annotations. The colour is changed. However, the image doesn't show up. The default pins show instead.
Here's my code:
class MyPointAnnotation : MKPointAnnotation {
var pinTintColor: UIColor?
}
class ViewController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate{
#IBOutlet weak var map: MKMapView!
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: "myAnnotation") as? MKPinAnnotationView
if annotationView == nil {
annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "myAnnotation")
annotationView?.canShowCallout = true
} else {
annotationView?.annotation = annotation
}
if annotation is MKUserLocation {
return nil
}
if let annotation = annotation as? MyPointAnnotation {
annotationView?.pinTintColor = annotation.pinTintColor
annotationView?.image = UIImage(named: "BLog.png")
}
return annotationView
}
override func viewDidLoad() {
super.viewDidLoad()
self.map.delegate = self
let annotation1 = MyPointAnnotation()
annotation1.coordinate = CLLocationCoordinate2DMake([LatArray], [LonArray])
annotation1.title = NameArray
annotation1.pinTintColor = .red
let annotation2 = MyPointAnnotation()
annotation2.coordinate = CLLocationCoordinate2DMake([LatArray2], [LonArray2])
annotation2.title = NameArray2
annotation2.pinTintColor = .green
}
}
The image "BLog.png" is located in the main bundle.
I've assigned the MKMapView as a delegate.
But the image still won't change.

Answer 1

You need to use MKAnnotationView instead of MKPinAnnotationView to add a custom image for your pin annotations.
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
if annotation is MKUserLocation {
return nil
}
if // Image pin // {
var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: "image")
if annotationView == nil {
annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: "image")
annotationView?.canShowCallout = true
annotationView?.image = UIImage(named: "BLog.png")
let rightButton: AnyObject! = UIButton(type: UIButtonType.detailDisclosure)
annotationView?.rightCalloutAccessoryView = rightButton as? UIView
}
else {
annotationView?.annotation = annotation
}
return annotationView
} else {
var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: "myAnnotation") as? MKPinAnnotationView
if annotationView == nil {
annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "myAnnotation")
annotationView?.canShowCallout = true
} else {
annotationView?.annotation = annotation
}
if let annotation = annotation as? MyPointAnnotation {
annotationView?.pinTintColor = annotation.pinTintColor
}
return annotationView
}
}