ios - 在 MapKit 中用 segue 替换 pushViewController

Question

我用自己的 MKAnnotation 创建了应用程序。我有另一个 ViewController，我尝试通过 segue 发送数据。现在，我有了导航 Controller 和这样的工作代码

func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {

    let annotationView:MyAnnotation = view.annotation as! MyAnnotation
    let storyboard = UIStoryboard(name: "Main", bundle: nil)
    let detailStoryboard = storyboard.instantiateViewController(withIdentifier: "stationDetails") as! DetailViewController
    detailStoryboard.stationTitleText = (annotationView.title)!
    detailStoryboard.bikeRacksText = (annotationView.bike_racks)!
    detailStoryboard.bikesText = (annotationView.bikes)!
    detailStoryboard.freeRacksText = (annotationView.free_racks)!
    detailStoryboard.distanceText = (annotationView.distance)!
    self.navigationController?.pushViewController(detailStoryboard, animated: true)
}

但是，我想用 segue 替换 Navigation Controller。我用标识符“pinTouched”创建了 segue，并将代码中的最后一行替换为

performSegue(withIdentifier: "pinTouched", sender: nil)

我的执行函数看起来像这样

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if (segue.identifier == "pinTouched")
    {
        var detailScreen = segue.destination as! DetailViewController
    }
}

我尝试了几种方法在此函数中发送此数据，但我只有白屏。我该如何解决？

谢谢解答! :)

Answer 1

您需要填写数据

func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
     performSegue(withIdentifier: "pinTouched", sender:view.annotation)
}

然后在 prepare(for segue

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if (segue.identifier == "pinTouched")
    {
         let detailStoryboard = segue.destination as! DetailViewController
         let annotationView = sender as! MyAnnotation 
         detailStoryboard.stationTitleText = (annotationView.title)!
         detailStoryboard.bikeRacksText = (annotationView.bike_racks)!
         detailStoryboard.bikesText = (annotationView.bikes)!
         detailStoryboard.freeRacksText = (annotationView.free_racks)!
         detailStoryboard.distanceText = (annotationView.distance)!
    }
}