swift - 在 MKMapView 上更新用户位置的图像

Question

我正在为 map 上的用户位置设置自定义图像，如下所示:

func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {

    if annotation.isEqual(mapView.userLocation) {

        let identifier = "User"

        var annotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier)

        if annotationView == nil{
            annotationView = CustomPointAnnotation(annotation: annotation, reuseIdentifier: identifier)
            annotationView!.canShowCallout = true

        } else {
            annotationView!.annotation = annotation
        }

        annotationView!.image = UIImage(named: userImage)

        return annotationView

    }
    return nil
}

我更改了图像属性，如何告诉 map 更新 MKAnnotationView？

Answer 1

这个解决方案对我有用:

let userLocation = mapView.view(for: mapView.userLocation)
userLocation?.image = UIImage(named: "newImage")
userLocation?.isHidden = true
userLocation?.isHidden = false