How to make annotation like
I have an app with a map and a lot of annotations done with a custom image and my problem is when I drag the map or zoom in on the annotation another point (lat, lon) is displayed.
So I was wondering, because I see this error in other applications, is there a way to fix it (be like map annotations that always show lat and lon permissions).
This is the code I am using to annotate:
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
if annotation is MKUserLocation {
return nil
}
var reuseId = ""
if annotation is FBAnnotationCluster {
reuseId = "Cluster"
var clusterView = mapView.dequeueReusableAnnotationView(withIdentifier: reuseId)
clusterView = FBAnnotationClusterView(annotation: annotation, reuseIdentifier: reuseId, configuration: FBAnnotationClusterViewConfiguration.default())
return clusterView
}else{
reuseId = "pin"
var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: reuseId)
if annotationView == nil {
annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: "pin")
annotationView!.image = UIImage(named: "locat.png")
}
else {
annotationView!.annotation = annotation
}
let cpa = annotation as! FBAnnotation
annotationView!.image = nil
let image = UIImage(named:cpa.nameImage)
annotationView!.image = image
return annotationView
}
}
If you have a question about what I'm asking, or anything else, please feel free to leave a comment.
Thanks in advance!
EDIT
I am uploading a video showing my problem
EDIT2
And here is a video from the cards that show that their annotation does not lose its lat and lon.
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Your problem is MKAnnotationView
. centerOffset
, you need to configure this property infunc mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView?
As defined in MKAnnotationView documentation
centerOffset Property The offset (in points) at which the view is displayed.
var centerOffset: CGPoint
Discussion By default, the center point of the annotation view is placed at the coordinate point of the linked annotation. You can use this property to reposition the annotation as needed. These x and y offset values are measured in points. Positive offset values move the view of the annotation down and to the right, while negative values move up and left.
Something like that
var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: reuseId)
if annotationView == nil {
annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: "pin")
annotationView!.image = UIImage(named: "locat.png")
//this is an example you must to get in account the form of your current view and what you want, I think your values are CGPoint(x: 0.5, y: 1)
annotationView?.centerOffset = CGPoint(x: 0, y: -((UIImage(named: "locat.png")?.size.height)!/2))
}
else {
annotationView!.annotation = annotation
}
Hope this helps you
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