我试图将MKAnnotationView添加到MKMapView，但是我无法做到这一点…任何人都可以帮我把MKAnnotationView添加到MKMapView？
这是我的代码：
override func viewDidLoad() {
super.viewDidLoad()
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.startUpdatingLocation()
var latitude:CLLocationDegrees = locationManager.location.coordinate.latitude
var longitude:CLLocationDegrees = locationManager.location.coordinate.longitude
var homeLati: CLLocationDegrees = 40.01540192
var homeLong: CLLocationDegrees = 20.87901079
var latDelta:CLLocationDegrees = 0.01
var longDelta:CLLocationDegrees = 0.01
var theSpan:MKCoordinateSpan = MKCoordinateSpanMake(latDelta,longDelta)
var myHome:CLLocationCoordinate2D = CLLocationCoordinate2DMake(homeLati,homeLong)
var myLocation:CLLocationCoordinate2D = CLLocationCoordinate2DMake(latitude,longitude)
var theRegion:MKCoordinateRegion = MKCoordinateRegionMake(myLocation,theSpan)
self.theMapView.setRegion(theRegion,animated: true)
self.theMapView.mapType = MKMapType.Hybrid
self.theMapView.showsUserLocation = true
///Red Pin
var myHomePin = MKPointAnnotation()
myHomePin.coordinate = myHome
myHomePin.title = "Home"
myHomePin.subtitle = "Bogdan's home"
self.theMapView.addAnnotation(myHomePin)
var anView:MKAnnotationView = MKAnnotationView()
anView.annotation = myHomePin
anView.image = UIImage(named:"xaxas")
anView.canShowCallout = true
anView.enabled = true
}
您需要实现viewForAnnotation委托方法并从那里返回一个MKAnnotationView。
原文链接：https://www.f2er.com/swift/320393.html以下是一个例子：
func mapView(mapView: MKMapView!,viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {
if (annotation is MKUserLocation) {
//if annotation is not an MKPointAnnotation (eg. MKUserLocation),//return nil so map draws default view for it (eg. blue dot)...
return nil
}
let reuseId = "test"
var anView = mapView.dequeueReusableAnnotationViewWithIdentifier(reuseId)
if anView == nil {
anView = MKAnnotationView(annotation: annotation,reuseIdentifier: reuseId)
anView.image = UIImage(named:"xaxas")
anView.canShowCallout = true
}
else {
//we are re-using a view,update its annotation reference...
anView.annotation = annotation
}
return anView
}
记住，当您要使用自己的自定义图像时，您需要创建一个简单的MKAnnotationView。 MKPinAnnotationView只能用于标准引脚注释。
另请注意，您不应该在调用startUpdatingLocation之后立即尝试访问locationManager.location。它可能还没有准备好
使用didUpdateLocations委托方法。
您还需要调用requestAlwaysAuthorization / requestWhenInUseAuthorization(请参阅Location Services not working in iOS 8)。
