ios UIStatusBarStyle 在 Swift 中不起作用

UIStatusBarStyle not working in Swift

提问by davidrayowens

I'm trying to change the Status Bar color in my Swift app to white, but am hitting a brick wall. I have 3 ViewControllers that are each embedded in a NavigationController (could that be the issue? I've already tried to place the code in the NavigationController class.) I've tried both of the following pieces of code in the didFinishLaunchingWithOptions of my AppDelegate.swift file but neither worked.

我正在尝试将 Swift 应用程序中的状态栏颜色更改为白色，但遇到了砖墙。我有 3 个 ViewControllers，每个都嵌入在 NavigationController 中（这可能是问题吗？我已经尝试将代码放在 NavigationController 类中。）我已经在我的 AppDelegate 的 didFinishLaunchingWithOptions 中尝试了以下两段代码.swift 文件，但都没有工作。

application.statusBarStyle = .LightContent

and

和

UIApplication.sharedApplication().statusBarStyle = .LightContent

All that the Docs have to say about it is that UIBarButtonStyle is an Int and gave me this enum snippet which didn't help me at all with implimentation.

文档要说的就是 UIBarButtonStyle 是一个 Int 并给了我这个枚举片段，它对我的​​实现没有任何帮助。

enum UIStatusBarStyle : Int {
    case Default
    case LightContent
    case BlackOpaque
}

What am I missing?

我错过了什么？

回答by Mick MacCallum

You have two options.

你有两个选择。

If you want to continue manually setting the style of the status bar, continue doing what you're doing, but you'll need to add the following key to your info.plist file with a value of NO.

如果您想继续手动设置状态栏的样式，请继续执行您正在执行的操作，但是您需要将以下键添加到您的 info.plist 文件中，其值为NO。

View controller-based status bar appearance

查看基于控制器的状态栏外观

Or, if you want to continue to use view controller based status bar appearance, instead of setting the application's statusBarStyle, override the preferredStatusBarStyleproperty in each view controller for which you'd like to specify a status bar style.

或者，如果您想继续使用基于视图控制器的状态栏外观，而不是设置应用程序的 statusBarStyle，请覆盖preferredStatusBarStyle您要为其指定状态栏样式的每个视图控制器中的属性。

Swift 3

斯威夫特 3

override var preferredStatusBarStyle: UIStatusBarStyle {
    return .lightContent
}

Swift 2

斯威夫特 2

override func preferredStatusBarStyle() -> UIStatusBarStyle {
    return UIStatusBarStyle.LightContent
}

回答by Maselko

Swift 3.0

斯威夫特 3.0

in AppDelegate.swift didFinishLaunchingWithOptions

在 AppDelegate.swift didFinishLaunchingWithOptions

UIApplication.shared.statusBarStyle = .lightContent

Info.plist

信息表

View controller-based status bar appearance -> NO

Swift 2.2

斯威夫特 2.2

in AppDelegate.swift didFinishLaunchingWithOptions

在 AppDelegate.swift didFinishLaunchingWithOptions

UIApplication.sharedApplication().statusBarStyle = .LightContent

Info.plist

信息表

View controller-based status bar appearance -> NO

回答by Nico S.

You have to set the:

你必须设置：

navigationController.navigationBar.barStyle = .black

navigationController.navigationBar.barStyle = .black

and the text will appear in white

文本将显示为白色

回答by Biodave

For iOS9.x and Xcode7, just put this inside AppDelegate.swift:

对于 iOS9.x 和 Xcode7，只需将其放入AppDelegate.swift：

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

    UINavigationBar.appearance().barStyle = .Black

} 

This will automatically turn your status bar's style to .Lightcontentfor all the view controllers inside a UINavigationController.

这将自动将状态栏的样式转换.Lightcontent为 UINavigationController 中的所有视图控制器。

(Also, delete View controller-based status bar appearancefrom Info.plist to suppress the warnings you're probably seeing too!)

（另外，View controller-based status bar appearance从 Info.plist 中删除以抑制您可能看到的警告！）

回答by Eric Welander

In Swift 3, status bar style has changed to a computed property in UIViewController that you can override like this:

在 Swift 3 中，状态栏样式已更改为 UIViewController 中的计算属性，您可以像这样覆盖它：

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

回答by GuiSoySauce

On iOS 9 the following (setStatusBarStyle) is deprecated and you will get a warning if you go that way.

在 iOS 9 上，以下 (setStatusBarStyle) 已被弃用，如果您这样做，您将收到警告。

UIApplication.sharedApplication().setStatusBarStyle(UIStatusBarStyle.LightContent, animated: true)

If you want all statusBars changed in a single shot try adding the following to your Info.plist. This will also make your launch-screen status bar white. While the code above won't.

如果您希望一次性更改所有状态栏，请尝试将以下内容添加到您的 Info.plist。这也将使您的启动屏幕状态栏变白。虽然上面的代码不会。

<key>UIStatusBarStyle</key>
<string>UIStatusBarStyleLightContent</string>
<key>UIViewControllerBasedStatusBarAppearance</key>
<false/>

回答by Constantin Saulenco

for me all above dind't work until i add:

对我来说，上述所有内容都不起作用，直到我添加：

self.navigationController?.navigationBar.barStyle = .black;

so:

所以：

1. Set UIViewControllerBasedStatusBarAppearanceto YESin .plist
2. In viewDidLoadcall self.setNeedsStatusBarAppearanceUpdate();
3. Override preferredStatusBarStyle
   override var preferredStatusBarStyle: UIStatusBarStyle { return .lightContent }
4. In overrided method i set also the navigationBar.barStyleso final
   for lightcontent:
   override var preferredStatusBarStyle: UIStatusBarStyle { self.navigationController?.navigationBar.barStyle = .black;//or default return .lightContent //or default }
   and for blackcontent use default

1. 设置UIViewControllerBasedStatusBarAppearance于YES在.plist
2. 在viewDidLoad通话self.setNeedsStatusBarAppearanceUpdate();
3. 覆盖 preferredStatusBarStyle
   override var preferredStatusBarStyle: UIStatusBarStyle { return .lightContent }
4. 在覆盖方法中，我还为浅色内容设置了navigationBar.barStyleso final ：对于黑色内容使用默认值
   
   override var preferredStatusBarStyle: UIStatusBarStyle { self.navigationController?.navigationBar.barStyle = .black;//or default return .lightContent //or default }
   

The source from hereand here.

来源来自这里和这里。

and if this doesn't work you can try add a UINavigationControllerextension:

如果这不起作用，您可以尝试添加UINavigationControllerextension：

extension UINavigationController
{
    override open var preferredStatusBarStyle: UIStatusBarStyle {
        if let lastVC = self.viewControllers.last
        {
            return lastVC.preferredStatusBarStyle
        }

        return .default
    }
}

回答by Lord iPhonius

Strange, using Swift 3.1 & XC8.2.1, but all of the above didn't work.

奇怪，使用 Swift 3.1 和 XC8.2.1，但以上所有方法都不起作用。

What I did, is just

我所做的，只是

extension UINavigationController
{
    override open var preferredStatusBarStyle: UIStatusBarStyle {
        get {
            return .lightContent
        }
    }
}

No Plist, no other stuff. HTH

没有Plist，没有其​​他东西。HTH

回答by Denis Kreshikhin

In Swift 3.0 you can override a getter in ViewController for View controller-based status bar appearance:

在 Swift 3.0 中，您可以覆盖 ViewController 中的 getter 以获得基于视图控制器的状态栏外观：

override var preferredStatusBarStyle: UIStatusBarStyle {
    get { return .lightContent }
}

回答by Igor

Step 1. Add to info.plist View controller-based status bar appearance -> NO

步骤 1. 添加到 info.plist View controller-based status bar appearance -> NO

Step 2. Add code in method where you need to change status bar color:

步骤 2. 在需要更改状态栏颜色的方法中添加代码：

UIApplication.shared.statusBarStyle = .lightContent //(or .default)
setNeedsStatusBarAppearanceUpdate()

Key line of code: setNeedsStatusBarAppearanceUpdate()

关键代码行： setNeedsStatusBarAppearanceUpdate()