swfit 调用 自带的地图

import MapKit
import SwiftUI
import CoreLocation

class ViewController: UIViewController,  MKMapViewDelegate {
    
    var mainMapView: MKMapView!
    let locationManager: CLLocationManager = CLLocationManager()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.mainMapView = MKMapView(frame: self.view.frame)
        self.view.addSubview(self.mainMapView)
        self.mainMapView.mapType = MKMapType.standard
        self .mainMapView.delegate =  self
        
        let latDelta = 0.05
        let longDelta = 0.05
        let lon = 114.248289
        let lat = 30.518005
        let title = "汉阳政务中心"
        let subtitle = "武汉市汉阳区四新北路125号"
        let currentLocationSpan: MKCoordinateSpan = MKCoordinateSpan(latitudeDelta: latDelta, longitudeDelta: longDelta)
        let center = CLLocation(latitude: lat, longitude: lon)
        let currentRegion = MKCoordinateRegion(center: center.coordinate, span: currentLocationSpan)
        self.mainMapView.setRegion(currentRegion, animated: true)
        let objectAnnotation = MKPointAnnotation()
        objectAnnotation.coordinate = CLLocationCoordinate2D(latitude: lat, longitude: lon)
        objectAnnotation.title = title
        objectAnnotation.subtitle = subtitle
        self.mainMapView.addAnnotation(objectAnnotation)
    }
    
    func  mapView(_ mapView:  MKMapView , viewFor annotation:  MKAnnotation )->MKAnnotationView? {
             if  annotation  is  MKUserLocation  {
                 return  nil
             }
             
             let  reuserId =  "pin"
             var  pinView = mapView.dequeueReusableAnnotationView(withIdentifier: reuserId) as? MKPinAnnotationView
             if  pinView ==  nil  {
                 pinView =  MKPinAnnotationView (annotation: annotation, reuseIdentifier: reuserId)
                 pinView?.canShowCallout =  true
                 pinView?.animatesDrop =  true
                 pinView?.pinTintColor =  UIColor .green
                 pinView?.rightCalloutAccessoryView =  UIButton (type: .detailDisclosure)
             } else {
                 pinView?.annotation = annotation
             }
             
             return  pinView
  }
    
    func mapView(_ mapView: MKMapView, regionWillChangeAnimated animated: Bool) {
            print("地图缩放级别发送改变时")
        }
         
        func mapView(_ mapView: MKMapView, regionDidChangeAnimated animated: Bool) {
            print("地图缩放完毕触法")
        }
         
        func mapViewWillStartLoadingMap(_ mapView: MKMapView) {
            print("开始加载地图")
        }
         
        func mapViewDidFinishLoadingMap(_ mapView: MKMapView) {
            print("地图加载结束")
        }
         
        func mapViewDidFailLoadingMap(_ mapView: MKMapView, withError error: Error) {
            print("地图加载失败")
        }
         
        func mapViewWillStartRenderingMap(_ mapView: MKMapView) {
            print("开始渲染下载的地图块")
        }
         
        func mapViewDidFinishRenderingMap(_ mapView: MKMapView, fullyRendered: Bool) {
            print("渲染下载的地图结束时调用")
        }
         
        func mapViewWillStartLocatingUser(_ mapView: MKMapView) {
            print("正在跟踪用户的位置")
        }
         
        func mapViewDidStopLocatingUser(_ mapView: MKMapView) {
            print("停止跟踪用户的位置")
        }
         
        func mapView(_ mapView: MKMapView, didUpdate userLocation: MKUserLocation) {
            print("更新用户的位置")
        }
         
        func mapView(_ mapView: MKMapView, didFailToLocateUserWithError error: Error) {
            print("跟踪用户的位置失败")
        }
         
        func mapView(_ mapView: MKMapView, didChange mode: MKUserTrackingMode,
                     animated: Bool) {
            print("改变UserTrackingMode")
        }
         
        func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay)
            -> MKOverlayRenderer {
            print("设置overlay的渲染")
            return MKPolylineRenderer()
        }
         
        private func mapView(mapView: MKMapView,
                             didAddOverlayRenderers renderers: [MKOverlayRenderer]) {
            print("地图上加了overlayRenderers后调用")
        }
         

        func mapView(_ mapView: MKMapView, didAdd views: [MKAnnotationView]) {
            print("添加注释视图")
        }
         
        func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView,
                     calloutAccessoryControlTapped control: UIControl) {
            print("点击注释视图按钮")
        }
         
        func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView) {
            print("点击大头针注释视图")
        }
         
        func mapView(_ mapView: MKMapView, didDeselect view: MKAnnotationView) {
            print("取消点击大头针注释视图")
        }
         
    func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView,didChange newState: MKAnnotationView.DragState,fromOldState oldState: MKAnnotationView.DragState) {
            print("移动annotation位置时调用")
        }
    
}

struct MapViewController: UIViewControllerRepresentable {
    func makeUIViewController(context: Context) -> ViewController {
        return ViewController()
    }

    func updateUIViewController(_ uiViewController: ViewController, context: Context) {
        // Optional: Implement any updates here
    }
}

struct ContentView: View {
    var body: some View {
        MapViewController()
    }
}

@main
struct YourApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView()
        }
    }
}