转换后iOS statusBar背景变为黑色

Question

我正在从UINavigationController内的VC1推送到VC​​2。 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恢复导航栏（绿色），所以在viewWillDissapear里面我有以下内容：

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

但是我在过渡期间得到了这个奇怪的黑色状态栏：

Here is a sample project

这是预期的转变：

Answer 1

你能在下面试试吗，

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)
}