Swift 如何通过点击地图注释上的右附件标注按钮来分隔视图

Question

我对 swift 和面向对象的编程相当陌生，我正在尝试通过点击一个长长的引脚注释中的右侧附件标注按钮来将视图从包含地图的视图切换到另一个视图按。在情节提要中，我在两个视图之间创建了一个 segue，并为 segue 分配了标识符 mapseg。不幸的是，在尝试了我可以通过谷歌找到的所有内容之后，当我点击正确的附件标注按钮并且不知道为什么时，我无法获得 segue。应用程序本身是一个带有三个选项卡的选项卡式应用程序。第二个选项卡的视图是包含地图的视图。另外，我不知道这是否与它有关，但我试图从中转换的视图嵌入在导航控制器中。这是我试图从中转换的视图的代码。

import UIKit
import MapKit

class SecondViewController: UIViewController, MKMapViewDelegate {

    @IBOutlet weak var MapView: MKMapView!
    override func viewDidLoad() {
        super.viewDidLoad()
        self.MapView.delegate = self
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
        let reuseID = "pin"
        var pinView = mapView.dequeueReusableAnnotationViewWithIdentifier(reuseID) as? MKPinAnnotationView
        pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseID)
        pinView!.canShowCallout = true
        pinView!.animatesDrop = true
        pinView!.enabled=true
        let btn = UIButton(type: .DetailDisclosure)
        btn.titleForState(UIControlState.Normal)
        pinView!.rightCalloutAccessoryView = btn as UIView
        return pinView
    }


    @IBAction func dropPin(sender: UILongPressGestureRecognizer) {
        if sender.state == UIGestureRecognizerState.Began {
            let location = sender.locationInView(self.MapView)
            let locCoord = self.MapView.convertPoint(location, toCoordinateFromView: self.MapView)
            let annotation = MKPointAnnotation()

            annotation.coordinate = locCoord
            annotation.title = "City Name"
            annotation.subtitle = ""

            self.MapView.removeAnnotations(MapView.annotations)
            self.MapView.addAnnotation(annotation)
            self.MapView.selectAnnotation(annotation, animated: true)


        }
        func mapView(mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
            if control == view.rightCalloutAccessoryView {
                self.performSegueWithIdentifier("mapseg", sender: self)

            }
        }

    }

}

Answer 1

我认为你需要重写prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) 方法。并检查是否工作