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)。