Swift,如何从点击的自定义注释中获取信息 [英] Swift, How to get information from a custom annotation on clicked
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问题描述
我有以下自定义注释类:
I've got the following custom annotation class:
import UIKit
import MapKit
class LocationMapAnnotation: NSObject, MKAnnotation {
var title: String?
var coordinate: CLLocationCoordinate2D
var location: Location
init(title: String, coordinate: CLLocationCoordinate2D, location: Location) {
self.title = title
self.coordinate = coordinate
self.location = location
}
}
我正在将注释加载到这样的地图视图中:
I am loading the annotations into a map view like this:
for i in 0..<allLocations.count{
//Add an annotation
let l: Location = self.allLocations[i] as! Location
let coordinates = CLLocationCoordinate2DMake(l.latitude as Double, l.longitude as Double)
let annotation = LocationAnnotation(title: l.name, coordinate: coordinates, location: l)
mapView.addAnnotation(annotation)
}
我想获得所选注释中的位置
对象。目前我有这个方法,当我点击注释时调用,但我不确定如何从注释中检索特定对象。
And I am wanting to get the Location
object from the selected annotation. Currently I have this method which is called when ever I tap an annotation, but I am unsure how to retrieve the specific object from the annotation.
func mapView(mapView: MKMapView, didSelectAnnotationView view: MKAnnotationView) {
print("Annotation selected")
//performSegueWithIdentifier("locationInfoSegue", sender: self)
}
谢谢。
推荐答案
您可以在didSelectAnnotationView中获取Annotation,然后它将为您提供MKAnnotationView。此MKAnnotationView将MKAnnotation作为对象。
You can get your Annotation within didSelectAnnotationView, which will then give you MKAnnotationView. This MKAnnotationView has MKAnnotation as an object.
func mapView(mapView: MKMapView, didSelectAnnotationView view: MKAnnotationView) {
println("Annotation selected")
if let annotation = view.annotation as? LocationMapAnnotation {
println("Your annotation title: \(annotation.title)");
}
}
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