如何在我的情节提要中访问 SwiftUI 中的文本变量

Question

struct ContentView: View
{
@State var text = ""
@State var isEditing = false
var body: some View
{
    
        iTextField("text", text: $text, isEditing: $isEditing)
            .style(height: 58, backgroundColor: nil, accentColor: Color(red: 0.30, green: 
      0.76, blue: 0.85), font: nil, paddingLeading: 25, cornerRadius: 6, hasShadow: true, 
       image: Image(systemName: "magnifyingglass"))
        
    }
}

我的视图中有上面这段代码，它是用 SwiftUI 编写的。如何在我的情节提要代码中访问该 textField 内的文本值？

class ViewController: UIHostingController<ContentView>
 {
       required init?(coder: NSCoder) {
       super.init(coder: coder,rootView: ContentView());
         }

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


  }

Answer 1

这就是我必须做的来解决这个问题。

  struct MyTextField: View
     {
        @ObservedObject var model: TextFieldModel

        var body: some View
        {
            iTextField("Email:", text: $model.text, isEditing: 
             $model.isEditing)
            .onReturn{
                print($model.text)
                NotificationCenter.default.post(name: 
             Notification.Name(rawValue: 
             "checkTicker"), object: nil)
            }
           
       }
      }


        class TextFieldModel: ObservableObject
         {
         init() { }
            @Published var text = ""
           @Published var isEditing = false
         }

      class ViewController: UIHostingController<MyTextField>
      {
         private var model = TextFieldModel()
    
         required init?(coder: NSCoder)
        {
           super.init(coder: coder,rootView: MyTextField(model: model));
        }
    
    override func viewDidLoad()
    {
        super.viewDidLoad()
        NotificationCenter.default.addObserver(self, selector: 
        #selector(checkTicker), name: NSNotification.Name(rawValue: 
         "checkTicker"), object: nil)

        // Do any additional setup after loading the view.
    }
    
    @objc func checkTicker()
    {
        print("hello2 ", model.text)
        
    }

  }

如何在我的情节提要中访问 SwiftUI 中的文本变量

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