objective-c - 在 iOS 8 应用程序中隐藏状态栏

Question

我试过了

[[UIApplication sharedApplication] setStatusBarHidden:YES]; 

这没有任何作用。

我在 Info.plist 文件中查看了“查看基于 Controller 的状态栏外观”，但它不存在。

如何在 Xcode 6 的应用中隐藏屏幕顶部的白色状态栏(带有时钟和电池电量)？谢谢!

Answer 1

您需要在每个 View Controller 上覆盖此方法，除非您有该 plist 条目。

Objective-C

-(BOOL)prefersStatusBarHidden{
    return YES;
}

swift 2

override func prefersStatusBarHidden() -> Bool {
    return true
}

Swift 3+

override var prefersStatusBarHidden: Bool {
    return true
}

并且不要忘记设置(如果您通过调用 presentViewController:animated:completion: 方法呈现 View Controller ):

Objective-C

vcToBeShownWithoutStatusbar.modalPresentationCapturesStatusBarAppearance = YES;

swift

vcToBeShownWithoutStatusbar.modalPresentationCapturesStatusBarAppearance = true

文档:https://developer.apple.com/reference/uikit/uiviewcontroller/1621453-modalpresentationcapturesstatusb

如果您从某个容器 View Controller (例如 UINavigationController 或 UIViewController 与 subview Controller )更改状态栏，并且您想更改负责状态栏的 View Controller 你应该使用 childViewControllerForStatusBarHidden: 属性。例如:

设置第一个 View Controller 实例始终负责状态栏管理

Objective-C

- (UIViewController *)childViewControllerForStatusBarHidden {
    return childViewControllers.first; // or viewControllers.first
}

swift 2

override var childViewControllerForStatusBarHidden() -> UIViewController? {
    return childViewControllers.first // or viewControllers.first
}

Swift 3+

override var childViewControllerForStatusBarHidden: UIViewController? {
    return childViewControllers.first // or viewControllers.first
}

设置容器 View Controller 负责状态栏管理

Objective-C

- (UIViewController *)childViewControllerForStatusBarHidden {
    return nil;
}

swift 2

override func childViewControllerForStatusBarHidden() -> UIViewController? {
    return nil
}

Swift 3+

override var childViewControllerForStatusBarHidden: UIViewController? {
    return nil
}

文档: https://developer.apple.com/documentation/uikit/uiviewcontroller/1621451-childviewcontrollerforstatusbarh