關閉第二個UI窗口後恢復狀態欄狀態

Question

主要有UIWindow，它包含MainViewController，它使用lightContent作爲preferredStatusBarStyle。我創建了第二個UIWindow實例來顯示PopupViewController，它使用default作爲preferredStatusBarStyle。

當我表明第二UIWindow與PopupViewController狀態欄樣式更改default，但是當我把它隱藏樣式不更改回lightContent。

同樣的問題適用於當我在彈出窗口中隱藏狀態欄的情況下使用VC的情況 - 當彈出窗口被解除時狀態欄不顯示。

新UIWindow創作：

// Prepare window to show dialog box in 
newWindow = UIWindow(frame: UIScreen.main.bounds) 
newWindow?.windowLevel = 3 

// Overlay new window 
newWindow?.makeKeyAndVisible() 
self.mainWindow.windowLevel = 1 
self.mainWindow.endEditing(true) 
newWindow?.isHidden = false 

// Display dialog 
newWindow?.rootViewController = PopupViewController() 

新UIWindow解僱：

UIView.animate(
    withDuration: 1.0, 
    delay: 0, 
    usingSpringWithDamping: 1, 
    initialSpringVelocity: 0, 
    options: .curveEaseOut, 
    animations: { [weak self] in 
     self?.newWindow?.alpha = 0 
    }, 
    completion: { [weak self] _ in 
     self?.newWindow?.windowLevel = 0 
     self?.newWindow?.rootViewController = nil 
     self?.newWindow?.alpha = 1 
     self?.mainWindow.makeKeyAndVisible() 
    } 
) 

謝謝！

編輯：彈出窗口可以出現在任何時間，我不知道哪個VC是活躍在那一刻

Answer 1

我一直在尋找的東西是UIViewController.setNeedsStatusBarAppearanceUpdate()。告訴VC狀態欄外觀已更改並需要恢復是一種方便的方法。

// make main window key but transparent 
self.mainWindow.alpha = 0 
self.newWindow?.windowLevel = 0 
self.newWindow?.alpha = 1 
self.mainWindow.makeKey() 

// restore status bar appearance 
self.mainWindow.rootViewController!.setNeedsStatusBarAppearanceUpdate() 

// Fade in main window with (status bar is in proper state at this moment) 
UIView.animate(
     withDuration: 0.9, 
     delay: 0, 
     usingSpringWithDamping: 1, 
     initialSpringVelocity: 0, 
     options: .curveEaseIn, 
     animations: { [weak self] in 
      self?.mainWindow.alpha = 1 
     }, 
     completion: { [weak self] _ in 
      // destroy popup VC 
      self?.newWindow?.rootViewController = nil 
     } 
) 

Here is useful article on this subject

謝謝大家！

Answer 2

變化對viewWillAppear中的狀態欄風格

override func viewWillAppear(_ animated: Bool) { 
    UIApplication.shared.statusBarStyle = .lightContent 
} 

Answer 3

1. 請添加在您的第一個控制器上的代碼更改狀態欄顏色Light。

   覆蓋FUNC viewDidAppear（_動畫：BOOL）{UIApplication.shared.setStatusBarStyle（UIStatusBarStyle.lightContent，動畫：假）}

2. 現在要在其中默認的狀態欄樣式第二控制器，把代碼：

   覆蓋FUNC viewDidAppear（_動畫：BOOL）{UIApplication.shared.setStatusBarStyle（UIStatusBarStyle.default，動畫：假）}

你一定會得到通過上述C妥善解決對於你的情況頌歌

Answer 4

簡單的解決方案

1. 顯示窗口

爲你的情況

1. 新的UIWindow創建簡單的解決方案：

   // Prepare window to show dialog box in 
   newWindow = UIWindow(frame: UIScreen.main.bounds) 
   newWindow?.windowLevel = 3 
   
   // Overlay new window 
   newWindow?.makeKeyAndVisible() 
   self.mainWindow.windowLevel = 1 
   self.mainWindow.endEditing(true) 
   newWindow?.isHidden = false 
   
   // Display dialog 
   newWindow?.rootViewController = PopupViewController() 
   // Now you can change status bar style default or other style 
   UIApplication.shared.statusBarStyle = .default 
   

2. 新的UIWindow解僱：

   UIView.animate(
       withDuration: 1.0, 
       delay: 0, 
       usingSpringWithDamping: 1, 
       initialSpringVelocity: 0, 
       options: .curveEaseOut, 
       animations: { [weak self] in 
        self?.newWindow?.alpha = 0 
        // Revert back to default 
        UIApplication.shared.statusBarStyle = .lightContent 
       }, 
       completion: { [weak self] _ in 
        self?.newWindow?.windowLevel = 0 
        self?.newWindow?.rootViewController = nil 
        self?.newWindow?.alpha = 1 
        self?.mainWindow.makeKeyAndVisible() 
       } 
   )