转到选项卡视图中的另一个选项卡时不显示NavigationBar

NavigationView {
    TabView(selection: $selectedTab) {
        // 第一个选项卡内容
        Text("第一个选项卡")
            .tabItem {
                Label("选项卡1", systemImage: "1.circle")
            }
            .tag(1)
        
        // 第二个选项卡内容
        Text("第二个选项卡")
            .tabItem {
                Label("选项卡2", systemImage: "2.circle")
            }
            .tag(2)
    }
    .navigationBarHidden(true)  // 隐藏NavigationBar
}

class TabBarController: UITabBarController, UITabBarControllerDelegate {
    override func viewDidLoad() {
        super.viewDidLoad()
        self.delegate = self
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        self.navigationController?.setNavigationBarHidden(true, animated: animated)
    }
    
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        self.navigationController?.setNavigationBarHidden(false, animated: animated)
    }
    
    func tabBarController(_ tabBarController: UITabBarController, didSelect viewController: UIViewController) {
        self.navigationController?.setNavigationBarHidden(true, animated: false)
    }
}