iOS statusBar 背景在转换后变黑

Question

我正在从 UINavigationController 中的 VC1 推送到 VC2。 VC2有一个透明的navigationBar。

在 VC2 中的 viewDidLoad 中:

self.navigationController?.navigationBar.isTranslucent = true
self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
self.navigationController?.navigationBar.barTintColor = .clear
self.navigationController?.navigationBar.backgroundColor = .clear

当我按下后退按钮时，我想将导航栏恢复原样(绿色)，所以在 viewWillDissapear 中我有以下内容:

self.navigationController?.navigationBar.isTranslucent = false
self.navigationController?.navigationBar.setBackgroundImage(nil, for: .default)
self.navigationController?.navigationBar.barTintColor = .green
self.navigationController?.navigationBar.backgroundColor = .green

但是我在转换时得到了这个奇怪的黑色状态栏:

Here is a sample project

这是预期的过渡:

Answer 1

你能试试下面吗，

override func viewDidLoad() {
    super.viewDidLoad()

    UINavigationBar.appearance().backgroundColor = .clear
    UINavigationBar.appearance().barTintColor = .clear

    self.navigationController?.navigationBar.shadowImage = UIImage()
    self.navigationController?.navigationBar.setBackgroundImage(UIImage(), for: .default)
}

和

override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)

    UINavigationBar.appearance().backgroundColor = .green
    UINavigationBar.appearance().barTintColor = .green

    self.navigationController?.navigationBar.setBackgroundImage(nil, for: .default)
}