Trying to update the mapview of the Project 14 of 100daysOfSwiftUI to show my current location, the problem i can´t zoom in move around

i have this code i add @Binding var currentLocation : CLLocationCoordinate2D and view.setCenter(currentLocation, animated: true to my MapView so i have a button that send thats value and the view actually move so slow to the location but then i can move away anymore

import SwiftUI
import MapKit

struct MapView: UIViewRepresentable {

    @Binding var centerCoordinate: CLLocationCoordinate2D
    @Binding var selectedPlace: MKPointAnnotation?
    @Binding var showingPlaceDetails: Bool
    @Binding var currentLocation : CLLocationCoordinate2D

    var annotations: [MKPointAnnotation]

    func makeUIView(context: Context) -> MKMapView {
        let mapView = MKMapView()
        mapView.delegate = context.coordinator
        return mapView
    }

    func updateUIView(_ view: MKMapView, context: Context) {

        if annotations.count != view.annotations.count {
            view.removeAnnotations(view.annotations)
            view.addAnnotations(annotations)
        }

        view.setCenter(currentLocation, animated: true)

    }

    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, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
         let identifier = "PlaceMark"
         var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: identifier)
         if annotationView == nil {
             annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: identifier)
             annotationView?.canShowCallout = true
             annotationView?.rightCalloutAccessoryView = UIButton(type: .detailDisclosure)

         } else {
             annotationView?.annotation = annotation
         }

         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

     }

    }
}

an this is my swiftUI view

...
    @State private var currentLocation = CLLocationCoordinate2D()

    var body: some View {
        ZStack{

            MapView(centerCoordinate: $centerCoordinate, selectedPlace: $selectedPlace, showingPlaceDetails: $showingPlaceDetails, currentLocation: $currentLocation ,  annotations: locations)
           // MapView(centerCoordinate: $centerCoordinate, selectedPlace: $selectedPlace, showingPlaceDetails: $showingPlaceDetails, annotations: locations)
                .edgesIgnoringSafeArea(.all)
            VStack{
                Spacer()
                HStack{
                    Spacer()
                    Button(action: {
                        self.getCurrentLocation()
                    }){
                        ButtonIcon(icon: "location.fill")
                    }
                }
                .padding()
            }
        }
        .onAppear(perform: getCurrentLocation)
    }

    func getCurrentLocation() {

        let lat = locationManager.lastLocation?.coordinate.latitude ?? 0
        let log = locationManager.lastLocation?.coordinate.longitude ?? 0

        self.currentLocation.latitude = lat
        self.currentLocation.longitude = log

    }
    ...

i just want to center my mapview on my current location when i press the laction button

@misaellandero

Since call to this method view.setCenter(currentLocation, animated: true) will result in change of region on map, this will in turn trigger MKMapView delegate method mapViewDidChangeVisibleRegion(_ mapView: MKMapView) here, we are updating centerCoordinate which is not required. I think now you understand the reason behind slow transition to currentLocation.

I except this solution would work for you:

Step 1: add this line mapView.showsUserLocation = false inside makeUIView(context: Context) -> MKMapView like this:

func makeUIView(context: Context) -> MKMapView {
        let mapView = MKMapView()
        mapView.delegate = context.coordinator
        mapView.showsUserLocation = false // I know this is default but, it improve readability
        return mapView
    }

Step 2: Set this property to true as shown below

func updateUIView(_ view: MKMapView, context: Context) {

        if annotations.count != view.annotations.count {
            view.removeAnnotations(view.annotations)
            view.addAnnotations(annotations)
        }
        view.showsUserLocation = true
        view.setCenter(currentLocation, animated: true)

    }

Step 3: Use this property to avoid unnecessary update for centerCoordinate as follows

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

That's it, this is how I resloved my issue, hope this helps.

If you are curious here is the link of my project, Complete Challenge