在 SwiftUI 视图中观察 UIViewRepresentable 的 @State var 变化

我有以下几点看法:

struct GameView: View {
    @State private var userWon: Bool = false {
        didSet {
            print("userWon: \(userWon)") // not called
            // TODO: Change game state here
        }
    }
    
var body: some View {
    ZStack {
        VStack {
            GameViewRepresentable(userWon: $userWon)
                .onChange(of: userWon) { newValue in
                    print("GameViewRepresentable: \(newValue)") // called
                    // TODO: or change game state here?
                }
        }
        .clipped()
    }
   }
}

可表示的视图如下所示:

struct GameViewRepresentable: UIViewRepresentable {
    typealias UIViewType = GameView
    @Binding var userWon: Bool {
        willSet { newValue
            print("willSet userWon: \(newValue)")
        }
        didSet {
            print("didSet userWon: \(userWon)")
        }
    }
    
    func makeUIView(context: Context) -> GameView {
        let gameView = GameView()
        gameView.delegate = context.coordinator
        return gameView
    }

    func updateUIView(_ uiView: GameView, context: Context) {
    }

    func makeCoordinator() -> GameViewCoordinator {
        GameViewCoordinator(self)
    }

    class GameViewCoordinator: GameViewDelegate  {
        var parent: GameViewRepresentable
        
        init(_ parent: GameViewRepresentable) {
            self.parent = parent
        }

        func userWon() {
            self.parent.userWon = true
        }
    }
}

我可以看到，在协调器内部正确地调用了userWon方法，该协调器相应地调用了GameViewRepresentable中的willSet和didSet，但是绑定userWon属性的GameView中的didSet从未被调用.然而，Gameview中的onChange确实会被调用.那么，这是应对国有assets资源 变化的正确方式吗？我原以为会调用Gameview中的didSet.