ios - 如何通过从大标题过渡到小标题来去除 NavigationBar 底部的白线

Question

有没有办法在没有这些白线的情况下进行过渡清洁？

在 rootView 我有：

   navigationController?.navigationBar.prefersLargeTitles = true

并在详细视图中：

   navigationItem.largeTitleDisplayMode = .never

在 AppDelegate 中：

let appearance = UINavigationBarAppearance()
        appearance.backgroundColor = .BlackNav
        appearance.titleTextAttributes = [.foregroundColor: UIColor.white]
        appearance.largeTitleTextAttributes = [.foregroundColor: UIColor.white]


        UINavigationBar.appearance().standardAppearance = appearance
        UINavigationBar.appearance().compactAppearance = appearance
        UINavigationBar.appearance().scrollEdgeAppearance = appearance

感谢您的回答！

编辑：

已解决：如果您不定义 UINavigationBar.appearance().compactAppearance，线条会消失：

 UINavigationBar.appearance().standardAppearance = appearance
 //UINavigationBar.appearance().compactAppearance = appearance
 UINavigationBar.appearance().scrollEdgeAppearance = appearance