swiftui - 从 SwiftUI 打开 UIKit ViewController 的最佳方式是什么

Question

我没有得到正确的解决方案，如何从单击的 SwiftUI 按钮打开 UIKit ViewController(带导航 Controller )。

Answer 1

您可以使用 UIViewControllerRepresentable 协议(protocol)来完成此操作，该协议(protocol)用于在 SwiftUI 中管理 UIKit ViewController。

这里是从 SwiftUI View 界面显示 ViewController 的代码。

SwiftUI View

struct ContentView: View {

    @State var isOpenView = false

    var body: some View {
    
        NavigationView {

            VStack {

                //show your view controller
                NavigationLink(destination: TestControllerView(), isActive: $isOpenView) {
                    EmptyView()
                }
            
                Button(action: {
                    self.isOpenView = true
                }){
                    Text("Tap Me")
                }                    
            }
        }
    }
}

现在将您的 ViewController 包装到 UIViewControllerRepresentable

struct TestControllerView : UIViewControllerRepresentable {

     func updateUIViewController(_ uiViewController: UIViewControllerType, context: Context) {
    
     }

     func makeUIViewController(context: Context) -> some UIViewController {

        guard let viewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(identifier: "TestViewController") as? TestViewController else {
            fatalError("ViewController not implemented in storyboard")
        }
    
        return viewController
     }
}

这是您的 ViewController.Swift 文件代码

import UIKit

class TestViewController: UIViewController {

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

     @IBAction func btnBackClicked(_ sender : UIButton) {
         self.dismiss(animated: true, completion: nil)
     }
}