添加MKPolylineRenderer的SwiftUI地图扩展

import SwiftUI
import MapKit

struct MapView: UIViewRepresentable {
    var coordinates: [CLLocationCoordinate2D]
    
    func makeUIView(context: Context) -> MKMapView {
        MKMapView()
    }
    
    func updateUIView(_ uiView: MKMapView, context: Context) {
        // 移除之前的折线
        uiView.removeOverlays(uiView.overlays)
        
        // 创建折线对象
        let polyline = MKPolyline(coordinates: coordinates, count: coordinates.count)
        
        // 创建折线渲染器
        let renderer = MKPolylineRenderer(polyline: polyline)
        
        // 设置折线样式
        renderer.strokeColor = .blue
        renderer.lineWidth = 3
        
        // 添加折线渲染器到地图视图
        uiView.addOverlay(renderer.polyline)
    }
}

struct ContentView: View {
    var body: some View {
        MapView(coordinates: [
            CLLocationCoordinate2D(latitude: 37.7749, longitude: -122.4194),
            CLLocationCoordinate2D(latitude: 34.0522, longitude: -118.2437),
            CLLocationCoordinate2D(latitude: 32.7157, longitude: -117.1611)
        ])
    }
}