获取注释图钉点击事件 MapKit Swift

Question

我有一个类的数组。并在 mkmapview 中添加一些注释引脚。

var events = [Events]()

   for event in events {
        let eventpins = MKPointAnnotation()
        eventpins.title = event.eventName
        eventpins.coordinate = CLLocationCoordinate2D(latitude: event.eventLat, longitude: event.eventLon)
        mapView.addAnnotation(eventpins)
    }

通过地图的委托，我实现了一个功能

 func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView) {
    print(view.annotation?.title! ?? "")
}

如何获取events正在点击数组的哪一行？因为我想在另一个 ViewController 中继续，并且我想发送这个类对象。

Answer 1

您应该创建一个自定义注释类，例如：

class EventAnnotation : MKPointAnnotation {
    var myEvent:Event?
}

然后，当您添加注释时，您将Event与自定义注释链接：

for event in events {
    let eventpins = EventAnnotation()
    eventpins.myEvent = event // Here we link the event with the annotation
    eventpins.title = event.eventName
    eventpins.coordinate = CLLocationCoordinate2D(latitude: event.eventLat, longitude: event.eventLon)
    mapView.addAnnotation(eventpins)
}

现在，您可以在委托函数中访问该事件：

func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView) {
    // first ensure that it really is an EventAnnotation:
    if let eventAnnotation = view.annotation as? EventAnnotation {
        let theEvent = eventAnnotation.myEvent
        // now do somthing with your event
    }
}