我想删除屏幕顶部的状态栏。

这不起作用：

func application

(application: UIApplication,

didFinishLaunchingWithOptions launchOptions: NSDictionary?)

-> Bool

{

application.statusBarHidden = true

return true

}

我也尝试过：

func application

(application: UIApplication,

didFinishLaunchingWithOptions launchOptions: NSDictionary?)

-> Bool

{

self.window = UIWindow(frame: UIScreen.mainScreen().bounds)

var controller = UIViewController()

application.statusBarHidden = true

controller.setNeedsStatusBarAppearanceUpdate()

var view = UIView(frame: CGRectMake(0, 0, 320, 568))

view.backgroundColor = UIColor.redColor()

controller.view = view

var label = UILabel(frame: CGRectMake(0, 0, 200, 21))

label.center = CGPointMake(160, 284)

label.textAlignment = NSTextAlignment.Center

label.text = "Hello World"

controller.view.addSubview(label)

self.window!.rootViewController = controller

self.window!.makeKeyAndVisible()

return true

}