setNavigationBarHidden在setViewControllers之后不起作用

Question

我发现setNavigationBarHidden在setViewControllers之后setViewControllers ？

这是我的代码：

• HomeNavController.swift ：

   class HomeNavController: UINavigationController { weak var tabBar: HomeTabBar! var tab: HomeTab = .match { didSet { switch self.tab { case .match: self.setViewControllers([MatchViewController()], animated: false) case .moments: self.setViewControllers([MomentsViewController()], animated: false) case .myPosts: self.setViewControllers([PostsViewController()], animated: false) } } } } 

• MatchViewController.swift

   override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated) self.navigationController?.setNavigationBarHidden(true, animated: false) } 

当我第一次切换到MatchViewController实例时，它运行良好，但是用func setViewControllers更改了HomeNavController实例的viewControllers后，它不起作用。

这是UINavigationController的错误吗？

Answer 1

也许尝试设置属性，这在我的情况下有效：

    let navigationBarAppearance = UINavigationBar.appearance()
    let transparentColor = UIColor(red: 0, green: 0, blue: 0, alpha: 0);
    // Sets the translucent background color
    navigationBarAppearance.backgroundColor = transparentColor
    navigationBarAppearance.titleTextAttributes = [NSForegroundColorAttributeName:transparentColor]
    // Hides the border
    navigationBarAppearance.shadowImage = UIImage()
    navigationBarAppearance.setBackgroundImage(UIImage(), for: .default)