Swift2 iOS9 - 如何在我的代码中获取自定义图像而不是默认注释红色引脚

Question

这是我的代码。我已经尝试了所有可用的解决方案，但我无法在我的代码中放置我想要的图像而不是默认的注释红色引脚。

import MapKit

class ViewController: UIViewController, MKMapViewDelegate {

@IBOutlet var map: MKMapView!

override func viewDidLoad() {
    super.viewDidLoad()

    var location = CLLocationCoordinate2DMake(18.956449, 72.810597)

    var span = MKCoordinateSpanMake(0.009, 0.009)
    var region = MKCoordinateRegion(center: location, span: span)

    map.setRegion(region, animated: true)

    var annotation = MKPointAnnotation()
    annotation.coordinate = location
    annotation.title = "Wilson College"
    annotation.subtitle = "Commerce College"

    map.addAnnotation(annotation)
    print("showing on map")

    mapView(map, viewForAnnotation: annotation)


}



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

    let identifier = "MyPin"
    print("inside viewForAnnotation")
    if annotation.isKindOfClass(MKUserLocation) {
        return nil
    }

    let detailButton: UIButton = UIButton(type: UIButtonType.DetailDisclosure)

    // Reuse the annotation if possible
    var annotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier)

    if annotationView == nil
    {
        annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: "pin")
        annotationView!.canShowCallout = true
        annotationView!.image = UIImage(named: "VRtest.png")
        annotationView!.rightCalloutAccessoryView = detailButton
        print("editing annotation")
    }
    else
    {
        annotationView!.annotation = annotation
    }

    return annotationView
}

感谢任何帮助。谢谢

Answer 1

你想要的是自定义默认注解吗？如果是，你可以参考这篇文章How to create Custom MKAnnotationView and custom annotation title and subtitle

这是 Swift 2 中的示例

class MapViewController: UIViewController {


    @IBOutlet weak var mapView: MKMapView!

    let initialLocation = CLLocation(latitude: 34.074094, longitude: -118.396329)
    let regionRadius: CLLocationDistance = 1000

    func centerMapOnLocation(location: CLLocation) {
        let coordinateRegion = MKCoordinateRegionMakeWithDistance(location.coordinate,
            regionRadius * 2.0, regionRadius * 2.0)
        self.mapView.setRegion(coordinateRegion, animated: true)
    }

    override func viewDidLoad() {
        self.mapView.delegate = self
        self.centerMapOnLocation(initialLocation)

        let location = CLLocationCoordinate2D(latitude: 34.074094, longitude: -118.396329)
        let annotation = CustomAnnotation(coordinate: location, imageName: "pinIcon", title: "Test", subtitle: "Detail", enableInfoButton: false)

        self.mapView.addAnnotation(annotation);
    }
}

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

        if (annotation is MKUserLocation) {
            return nil
        }

        let pinIdentifier = "pinIdentifier"
        var view: MKAnnotationView
        if (annotation.isKindOfClass(CustomAnnotation)) {
            if let dequeuedView = mapView.dequeueReusableAnnotationViewWithIdentifier(pinIdentifier)
                as MKAnnotationView? {
                    dequeuedView.annotation = annotation
                    view = dequeuedView
            } else {
                view = MKAnnotationView(annotation: annotation, reuseIdentifier: pinIdentifier)
                view.canShowCallout = true

                //Set custome image
                let customAnnotation = annotation as! CustomAnnotation
                view.image = UIImage(named:customAnnotation.imageName!)
            }

            return view
        }

        return nil
    }

}

class CustomAnnotation : NSObject, MKAnnotation {

    var coordinate: CLLocationCoordinate2D
    var imageName: String?
    var title: String?
    var subtitle: String?
    var enableInfoButton : Bool

    init(coordinate: CLLocationCoordinate2D, imageName: String, title: String, subtitle: String, enableInfoButton : Bool) {
        self.coordinate = coordinate
        self.imageName = imageName
        self.title = title
        self.subtitle = subtitle
        self.enableInfoButton = enableInfoButton;
    }
}

这是我在屏幕上显示的自定义图像