在iOS 13和其他系统中未调用preferredStatusBarStyle [英] preferredStatusBarStyle not getting called in iOS 13 and other

问题描述

我的应用程序中有多个 UITabBar ，有些 ViewController 具有白色状态栏，有些 ViewController 具有黑色状态栏.

我的 info.plist

查看基于控制器状态栏的状态到 YES

我的Viewcontroller具有以下代码.

  override var preferredStatusBarStyle:UIStatusBarStyle {return .default//或returnlightContent} 

但 preferredStatusBarStyle 从未被调用.

我还在控制器 viewDidLoad 中的下面写了一行，但仍然没有被调用.

self.setNeedsStatusBarAppearanceUpdate()

我也将基于控制器的状态栏外观更改为<是>是&&否可以多次检查，但对我没有帮助.

我还尝试了以下解决方案和其他stackoverflow答案，但没有任何帮助.

preferredStatusBarStyle在iOS 13上不适用

preferredStatusBarStyle var在iOS12中不起作用?

编辑

我尝试了下面的代码，该代码返回了 topViewController ，它将调用该 ViewController

的 preferredStatusBarStyle

 扩展UINavigationController {重写open var childForStatusBarStyle:UIViewController吗?{返回topViewController}} 

因此，一旦找到 topViewController ，它将调用该特定 ViewController 的 preferredStatusBarStyle .

但是问题是它没有在 UITabBarController -> UINavigationController -> UIViewController 内部被调用.

要求

我有2个不同的 TabBarController .

第一个 TabBarController statusBarStyle是 .lightContent .

第二个 TabBarController statusBarStyle在不同的控制器中是 .lightContent 和 .default .

当我切换到第二个TabBarController时，它将调用第二个 TabBarController 的 preferredStatusBarStyle ，并且所有 ViewController statusBarStyle都变为 .default ，但是我的某些控制器statusBarStyle希望为 .ligthContent

我该如何实现?

任何帮助将不胜感激.

谢谢

解决方案

我找到了解决方案.

在下面的代码中找到 topViewController .

 扩展UINavigationController {重写open var childForStatusBarStyle:UIViewController吗?{返回topViewController}} 

因此一旦找到 topViewController ，下面的代码就会在当前的 ViewController 中被调用，您可以根据需要设置 statusBarStyle .

 覆盖var preferredStatusBarStyle:UIStatusBarStyle {} 

在我的情况下，我有2个 TabBar .

第一个 TabBar 控制器为 .lightContent ，第二个 TabBar 控制器为 .default ，因此创建2个 UITabBarController .第一个用于 .lightContent ，第二个用于 .default ，并将 preferredStatusBarStyle 放入其中.

因此，当您位于 UITabBarController 子控制器时，您的 UITabBarController preferredStatusBarStyle 会被调用，子控制器 statusBarStyle 会被设置按照您设定的样式.

I have multiple UITabBar in my application and some ViewController has White color statusbar and some ViewController has black color statusbar.

My info.plist

View controller-based status bar appearance to YES

My Viewcontroller has below code.

override var preferredStatusBarStyle: UIStatusBarStyle {
    return .default //or return . lightContent
}

but preferredStatusBarStyle never getting called.

i have also written below line in my controller viewDidLoad but still above wasn't getting called.

self.setNeedsStatusBarAppearanceUpdate()

also i have changeed controller-based status bar appearance to YES && NO for multiple time to check but nothing helps to me.

I have also tried below solutions and other stackoverflow answers but nothing helps me.

preferredStatusBarStyle not respecting on iOS 13

preferredStatusBarStyle var not working in iOS12?

EDIT

I have tried below code which returns me the topViewController and it will call the preferredStatusBarStyle of that ViewController

extension UINavigationController {
    override open var childForStatusBarStyle: UIViewController? {
        return topViewController
    }
}

so once the topViewController found it will call preferredStatusBarStyle of that particular ViewController.

but the issue is that it wasn't getting called inside UITabBarController -> UINavigationController -> UIViewController.

Requirment

I have 2 different TabBarController.

1st TabBarController statusBarStyle is .lightContent.

2nd TabBarController statusBarStyle is .lightContent and .default in different controller.

When i change to the 2nd TabBarController it will call preferredStatusBarStyle of 2nd TabBarController and all ViewController statusBarStyle goes .default but some of my controller statusBarStyle wants to be of .ligthContent

How can i achieve this?

any help will be appreciated.

Thanks

解决方案

i got the solution.

Put below code to find the topViewController.

extension UINavigationController {
    override open var childForStatusBarStyle: UIViewController? {
        return topViewController
    }
}

so once it finds topViewController, below code getting called in your current ViewController and you can set statusBarStyle as per requirement.

override var preferredStatusBarStyle: UIStatusBarStyle { }

In my case i have 2 TabBar.

1st TabBar controllers are of .lightContent and 2nd TabBar controllers are of .default so create 2 UITabBarController. 1st is for .lightContent and 2nd is for .default and put preferredStatusBarStyle inside it.

so when you are at UITabBarController sub controller, your UITabBarController preferredStatusBarStyle getting called and sub controller statusBarStyle set as per your set style.

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