Question

我是swift和面向对象编程的新手，我试图通过点击长按下的引脚注释中的右侧附件标注按钮，将视图从包含地图的视图切换到另一个视图按。在故事板中，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东西后，当我点击正确的配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选项卡。此外，我不知道这是否与它有关，但我试图转换的视图嵌入在导航控制器中。这是我试图转换的视图的代码。

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

我认为您需要覆盖prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?)方法。并检查是否正常工作

Swift如何通过点击地图注释上的右侧附件标注按钮来截取视图

1 个答案: