从MKMapView制作UIImage

import MapKit

func createImageFromMapView(mapView: MKMapView, completionHandler: @escaping (UIImage?) -> Void) {
    let options = MKMapSnapshotOptions()
    options.region = mapView.region
    options.scale = UIScreen.main.scale
    options.size = mapView.frame.size
    
    let snapshotter = MKMapSnapshotter(options: options)
    snapshotter.start { snapshot, error in
        guard let snapshot = snapshot else {
            completionHandler(nil)
            return
        }
        
        completionHandler(snapshot.image)
    }
}

// 使用示例
let mapView = MKMapView(frame: CGRect(x: 0, y: 0, width: 300, height: 300))
// 设置地图的区域、标记等

createImageFromMapView(mapView: mapView) { image in
    if let image = image {
        // 在这里处理生成的图像
    } else {
        // 处理生成图像失败的情况
    }
}