UIViewRepresentable/UIView 转换为 View, UIViewControllerRepresentable/UIViewController 转换为 View

1. UIViewRepresentable UIKit 库中 UIView 转换为 SwiftUI 中 View, TextFieldView 的交互

  1.1 创建转换 UIView 实例 UIViewRepresentableBootcamp.swift

import SwiftUI

/// 呈现/表示视图，视图的转换
///  Convert a UIView from UIKit to SwiftUI
///  UIKit 库中的  UIView 转换为 SwiftUI 中 View
struct UIViewRepresentableBootcamp: View {
    @State private var text:String  = ""
    
    var body: some View {
        VStack {
            /// UIView 转换 View
            // viewRepresentable
            
            /// 文本输入框 UIkit view 与 SwiftUI 交互
            textFieldViewRepresentable
        }
    }
    
    /// 文本输入框 UIkit  与 SwiftUI 交互
    var textFieldViewRepresentable: some View{
        VStack {
            Text(text)
            HStack {
                Text("SwiftUI: ")
                TextField("Type here...", text: $text)
                    .padding(.horizontal, 5)
                    .frame(height: 55)
                    .background(Color.gray.opacity(0.3).cornerRadius(10))
                    .padding(.trailing, 10)
            }
            
            HStack {
                Text("UIKit:     ")
                UITextFieldViewRepresentable(text: $text)
                    .updatePlaceholder("New placeholder...")
                    .padding(.horizontal, 5)
                    .frame(height: 55)
                    .background(Color.gray.opacity(0.3).cornerRadius(10))
                    .padding(.trailing, 10)
            }
        }
    }
    
    /// UIView 转换 View
    var viewRepresentable: some View{
        VStack {