选择MKPolygon on tap

import MapKit

class ViewController: UIViewController, MKMapViewDelegate {
    @IBOutlet weak var mapView: MKMapView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        mapView.delegate = self
        
        // 创建一个多边形区域
        let coordinates = [
            CLLocationCoordinate2D(latitude: 37.33233141, longitude: -122.03121860),
            CLLocationCoordinate2D(latitude: 37.33233141, longitude: -122.03121860),
            // 添加更多的坐标点
        ]
        let polygon = MKPolygon(coordinates: coordinates, count: coordinates.count)
        
        // 将多边形添加到地图上
        mapView.addOverlay(polygon)
    }
    
    // 点击事件响应
    func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView) {
        if let polygon = view.annotation as? MKPolygon {
            // 点击的是多边形区域
            // 执行相应的操作
        }
    }
    
    // 绘制多边形区域
    func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer {
        if let polygon = overlay as? MKPolygon {
            let renderer = MKPolygonRenderer(polygon: polygon)
            renderer.fillColor = UIColor.blue.withAlphaComponent(0.5)
            return renderer
        }
        return MKOverlayRenderer(overlay: overlay)
    }
}