在SwiftUI中更新inputAccessoryView (UIViewRepresentable)

import SwiftUI

struct InputAccessoryViewUpdater: UIViewRepresentable {
    @Binding var text: String
    
    func makeCoordinator() -> Coordinator {
        Coordinator(self)
    }
    
    func makeUIView(context: Context) -> UIView {
        // 创建一个用于输入的自定义UIView
        let inputView = CustomInputView()
        inputView.delegate = context.coordinator
        return inputView
    }
    
    func updateUIView(_ uiView: UIView, context: Context) {
        // 更新UIView的状态
        if let inputView = uiView as? CustomInputView {
            inputView.text = text
        }
    }
    
    class Coordinator: NSObject, CustomInputViewDelegate {
        let parent: InputAccessoryViewUpdater
        
        init(_ parent: InputAccessoryViewUpdater) {
            self.parent = parent
        }
        
        func textDidChange(_ text: String) {
            parent.text = text
        }
    }
}

protocol CustomInputViewDelegate: AnyObject {
    func textDidChange(_ text: String)
}

class CustomInputView: UIView {
    weak var delegate: CustomInputViewDelegate?
    var text: String = "" {
        didSet {
            delegate?.textDidChange(text)
        }
    }
    
    // 实现自定义的inputAccessoryView逻辑
    // ...
}

import SwiftUI

struct ContentView: View {
    @State private var text: String = ""
    
    var body: some View {
        VStack {
            // 显示文本输入框和自定义inputAccessoryView
            TextField("输入文本", text: $text)
                .textFieldStyle(RoundedBorderTextFieldStyle())
                .padding()
                .overlay(RoundedRectangle(cornerRadius: 10).stroke(Color.blue, lineWidth: 2))
                .inputAccessoryViewUpdater(text: $text)
            
            // 显示当前文本
            Text("当前文本：\(text)")
                .padding()
        }
    }
}

extension View {
    func inputAccessoryViewUpdater(text: Binding<String>) -> some View {
        self.background(InputAccessoryViewUpdater(text: text))
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}