Question

目前我从API中提取JSON并将其发布到MapKit Map。它从API中提取并将其解析为Class Market数组，并且每个邮政编码的大小都不同。目前，我正在尝试获取单击的特定注释标注的信息，并在信息按钮单击上将其发送到新的视图控制器。

这是我准备segue的代码，当按下信息按钮时：

    //This method gets ran when the information button is pressed on the Annotation's Callout

func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView,
             calloutAccessoryControlTapped control: UIControl) {
    let market = view.annotation as! Market

    performSegue(withIdentifier: "callout", sender: market)

}

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    let destination = segue.destination as! CalloutViewController

    destination.market = //Yes this line isn't completed, Not sure how to get the current class from the annotation's callout when it is pressed!

    let backItem = UIBarButtonItem()
    backItem.title = "Back"
    navigationItem.backBarButtonItem = backItem
}

这是Callout View Controller（我试图获取信息的那个）。：

class CalloutViewController: UIViewController {

let market: Market! = nil

@IBOutlet weak var testView: UITextView!

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view.

    self.navigationController?.navigationBar.tintColor = UIColor.white
}

Answer 1

应该只是：

destination.market = sender as? Market

或者我错过了什么？

如何将信息从MapKit注释发送到新的视图控制器

1 个答案: