在Plist中添加以下属性。

Status bar is initially hidden = YES

View controller-based status bar appearance = NO

现在状态栏将被隐藏。

在Info.plist中添加以下内容:

<key>UIStatusBarHidden</key>
<true/>
<key>UIViewControllerBasedStatusBarAppearance</key>
<false/>

UIApplication。setStatusBarX在iOS9已弃用 在info.plist中不推荐使用UIViewControllerBasedStatusBarAppearance=NO 我们应该在所有的视图控制器中使用preferredStatusBarX

但当涉及到UINavigationController时，它会变得更有趣:

If navigationBarHidden = true, the child UIViewController's preferredStatusBarX are called, since the child is displaying the content under the status bar. If navigationBarHidden = false, the UINavigationController's preferredStatusBarX are called, after all it is displaying the content under the status bar. The UINavigationController's default preferredStatusBarStyle uses the value from UINav.navigationBar.barStyle. .Default = black status bar content, .Black = white status bar content. So if you're setting barTintColor to some custom colour (which you likely are), you also need to set barStyle to .Black to get white status bar content. I'd set barStyle to black before setting barTintColor, in case barStyle overrides the barTintColor. An alternative is that you can subclass UINavigationController rather than mucking around with bar style. HOWEVER, if you subclass UINavigationController, you get no control over the status bar if navigationBarHidden = true. Somehow UIKit goes direct to the child UIViewController without asking the UINavigationController in this situation. I would have thought it should be the UINavigationController's responsibility to ask the child >shrugs<. And modally displayed UIViewController's only get a say in the status bar if modalPresentationStyle = .FullScreen. If you've got a custom presentation style modal view controller and you really want it to control the status bar, you can set modalPresentationCapturesStatusBarAppearance = true.

在viewdidload中添加以下行

  [[UIApplication sharedApplication] setStatusBarHidden:YES
                                        withAnimation:UIStatusBarAnimationFade];

并添加新方法

  - (BOOL)prefersStatusBarHidden {
          return YES;
  }

同时更改信息。plist文件 查看基于控制器的状态栏外观" = NO

这对我很有用

我做了以下操作，它似乎是有效的(即使在iOS 8中):

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    if ([self respondsToSelector:@selector(setNeedsStatusBarAppearanceUpdate)]) {

        [[UIApplication sharedApplication] setStatusBarHidden:YES];
    }
}

- (BOOL)prefersStatusBarHidden {
    return YES;
}

为了更好地理解，添加一些带有评论的照片:

App在任何更改前

在名为“支持文件”的Project Navigator文件夹中找到，然后单击*。plist文件

之后你会得到不同的设置你的应用程序显示。你需要添加2个键UIStatusBarHidden和UIViewControllerBasedStatusBarAppearance。你可以简单地点击+按钮

按下+键后，你可以选择其中一个键开始打字。

正确的版本:

最后，在应用这些变化之后:

另外，你可以在这里找到另一种解决方案