如何在当前位置，MapKit，Swift，iOS10上绘制引脚注释

Question

我在故事板上有一个MapView，并且选中了User Location选项。我还写了一些代码在地图上绘制另一个注释。此注释的坐标（tappedCoordinates）源自已注册的手势。

//add new annotation 
let annotation = MKPointAnnotation() 
annotation.coordinate = tappedCoordinates 
mapView.addAnnotation(annotation) 

//add circle radius 
let circle = MKCircle(center: tappedCoordinates, radius: 20) 
mapView.setRegion(MKCoordinateRegion(center: tappedCoordinates, span: MKCoordinateSpan(latitudeDelta: 0.002, longitudeDelta: 0.002)), animated: true) 
mapView.add(circle) 

该代码允许用户在地图上绘制注释（pin）。它工作正常，除非用户试图在当前位置上绘制注释。相反，MapView认为您选择了当前位置注释，并显示“当前位置”，而不是允许用户绘制自定义注释。

如何阻止用户位置注释可点击，并允许将我的自定义注释放在同一区域？我不想删除当前位置注释。

Answer 1

func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { 
    let locObject = locations.last 
    let annotation = MKPointAnnotation() 
    let centerCoordinate = locObject?.coordinate 
    annotation.coordinate = centerCoordinate! 
    annotation.title = "Title" 
    mapView.addAnnotation(annotation) 

}

Answer 2

class ViewController: UIViewController, MKMapViewDelegate { 

override func viewDidLoad() { 
    super.viewDidLoad() 

    // Set map view delegate with controller 
    self.mapView.delegate = self 
} 
} 

覆盖其委托方法：

func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? { 
if (annotation is MKUserLocation) { 
    return nil 
} 

if (annotation.isKindOfClass(CustomAnnotation)) { 
    let customAnnotation = annotation as? CustomAnnotation 
    mapView.translatesAutoresizingMaskIntoConstraints = false 
    var annotationView = mapView.dequeueReusableAnnotationViewWithIdentifier("CustomAnnotation") as MKAnnotationView! 

    if (annotationView == nil) { 
     annotationView = customAnnotation?.annotationView() 
    } else { 
     annotationView.annotation = annotation; 
    } 

    self.addBounceAnimationToView(annotationView) 
    return annotationView 
} else { 
    return nil 
} 
} 

//添加PIN（MKPointAnnotation）

override func viewDidLoad() { 
super.viewDidLoad() 

// Set map view delegate with controller 
self.mapView.delegate = self 

let newYorkLocation = CLLocationCoordinate2DMake(40.730872, -74.003066) 
// Drop a pin 
let dropPin = MKPointAnnotation() 
dropPin.coordinate = newYorkLocation 
dropPin.title = "USA" 
mapView.addAnnotation(dropPin) 
}