Adding a title in front/below a custom annotation mapkit swift 4 - swift

Question

In my app, I have a mapkit full of annotations and when one is clicked I want a new view to slide up with details on the annotation. Correct me if I'm wrong but I think you need to create a custom annotation in order to implement the didSelect() method.
The problem is that, by default, the custom annotations that pop up don't have the name of what the annotations is, like the default mapkit annotations do, and since I have around 20 annotations at a time, the user has no way of knowing what they are selecting.
Any idea as to how to add a title or label underneath the custom annotation with the name of the annotation? I don't want to make a call out that pops up above the annotation since I'm having the view slide up, filled with the annotations data.
Here is what I have:
extension ViewController : MKMapViewDelegate {
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
if annotation is MKUserLocation { return nil }
var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: "pin") as? MKPinAnnotationView
if annotationView == nil {
annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "pin")
annotationView?.animatesDrop = true
annotationView?.canShowCallout = false
} else {
annotationView?.annotation = annotation
}
return annotationView
}
func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView) {
UIView.animate(withDuration: 0.2) {
// the view that will hold the annotations data
self.annotationInfoViewBottomConstraint.constant = 0
self.view.layoutIfNeeded()
}
}
}
As you can see the default annotation has the name of the location underneath, which is what I want but I want it under the "pin" looking custom annotations.

Answer 1

You can create a label like so:
let annotationLabel = UILabel(frame: CGRect(x: -40, y: -35, width: 105, height: 30))
annotationLabel.numberOfLines = 3
annotationLabel.textAlignment = .center
annotationLabel.font = UIFont(name: "Rockwell", size: 10)
// you can customize it anyway you want like any other label
Set the text:
annotationLabel.text = annotation.title!!
And then add to annotation view:
annotationView.addSubview(annotationLabel)
Picture of annotation with label
I also added a background and border by doing:
annotationLabel.backgroundColor = UIColor.white
annotationLabel.layer.cornerRadius = 15
annotationLabel.clipsToBounds = true
You can also change where the label is in respect to the annotation by changing the X and Y when creating the label. Negative is to the left and up, positive right and down.

Answer 2

Simple Solution for Name under Marker and color change:
MapKit Delegate Method: (I have used MKMarkerAnnotationView and use markerTintColor to set color)
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: "pin") as? MKMarkerAnnotationView
guard let annotation = annotation as? PlaceAnnotation else {
return annotationView
}
if annotationView == nil {
annotationView = MKMarkerAnnotationView(annotation: annotation, reuseIdentifier: "pin")
} else {
annotationView?.annotation = annotation
}
annotationView?.markerTintColor = annotation.pinTintColor
return annotationView
}
MKAnnotation Custom Class:
class PlaceAnnotation: NSObject, MKAnnotation {
let title: String?
let locationName: String
let discipline: String
let coordinate: CLLocationCoordinate2D
var pinTintColor: UIColor
init(id: String, title: String, locationName: String, discipline: String, coordinate: CLLocationCoordinate2D, pinTintColor: UIColor) {
self.title = title
self.locationName = locationName
self.discipline = discipline
self.coordinate = coordinate
self.pinTintColor = pinTintColor
super.init()
}
}
How to Use:
let place = PlaceAnnotation(title: "My Location", locationName: "", discipline: "", coordinate: CLLocationCoordinate2D(latitude: lat, longitude: lng), pinTintColor: UIColor.systemBlue)
map.addAnnotation(place)

Answer 3

You'll need to set annotationView.enabled and annotationView.canShowCallout to YES