如何使用 MapKit 从地图中删除所有注释

Question

我尝试过使用 RemoveAnnotation 函数，但我不知道如何将它们全部删除

struct MapView: View {
    @State private var region = MKCoordinateRegion(
        center: CLLocationCoordinate2D(
            latitude: 25.7617,
            longitude: 80.1918
        ),
        span: MKCoordinateSpan(
            latitudeDelta: 100,
            longitudeDelta: 100
        )
    )
    

    var body: some View {
        Map(coordinateRegion: $region)
    } }

Answer 1

我正在使用这个扩展程序

extension MKMapView {
        
        
        func removeAnnotationAndOverlay(annotation: MKAnnotation) {
            
            removeAnnotation(annotation)
            
            if overlays.count > 0 {
                
                if let overlay = overlays.first {
                    
                    removeOverlay(overlay)
                    
                }
                
            }
           
        }
        
        func removeAllOverlays() {
            
           
            removeOverlays(overlays)
                    
     
            
        }
        
        
        func removeAllAnnotations() {
            
               
            removeAnnotations(annotations)
                
    
        }
        
        func removeAllAnnotationsAndOverlays() {
            
            removeAllOverlays()
            
            removeAllAnnotations()
        }
    }

如何使用 MapKit 从地图中删除所有注释

How can I remove all annotations from a map using MapKit

swiftui

mapkit