在SwiftUI中检查问答游戏的切换按钮

import SwiftUI

struct ContentView: View {
    @State private var isGameOn = false
    
    var body: some View {
        VStack {
            Text("问答游戏")
                .font(.title)
            
            Toggle(isOn: $isGameOn) {
                Text("开始/结束游戏")
            }
            .padding()
            
            if isGameOn {
                Text("游戏已开始")
            } else {
                Text("游戏已结束")
            }
        }
    }
}

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