swift - 自定义注释引脚

Question

我想自定义我的注释(图钉)，以便我能够更改其图像。我用了一个函数(mapview)来改变图片，所以我不知道是否应该再次使用它来改变另一组引脚的图片；假设我有两个地点，一家餐馆和一家医院，所以我想分别放一个盘子和一个红十字。这是我的功能代码:

func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
    if annotation is MKUserLocation {
        return nil
    }
    var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: "identifier")
        if annotationView == nil{
            annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: "identifier")
            annotationView!.canShowCallout = true
            annotationView!.rightCalloutAccessoryView = UIButton(type: .detailDisclosure)

            let pinImg = UIImage(named: "curz")
            let size = CGSize(width: 50, height: 50)
            UIGraphicsBeginImageContext(size)
            pinImg!.draw(in: CGRect(x: 0, y: 0, width: size.width, height: size.height))
            let resizedImage = UIGraphicsGetImageFromCurrentImageContext()
            UIGraphicsEndImageContext()
            annotationView!.image = resizedImage
            }
    else {
    annotationView!.annotation = annotation
  }
return annotationView
}

Answer 1

通过比较坐标信息，可以针对不同地点返回不同的标注 View 。例如:

if ((annotation.coordinate.latitude == theCoordinate1.latitude) 
    && (annotation.coordinate.longitude == theCoordinate1.longitude))

{ 返回一些AnnotationView}

点击此链接Adding different images to different annotation views in xcode