如何让iOS应用程序全屏显示

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    // 获取屏幕的边界
    let screenBounds = UIScreen.main.bounds
    
    // 创建应用程序的主窗口
    window = UIWindow(frame: screenBounds)
    
    // 设置主窗口的背景颜色
    window?.backgroundColor = UIColor.white
    
    // 设置主窗口的根视图控制器
    window?.rootViewController = YourRootViewController()
    
    // 显示主窗口
    window?.makeKeyAndVisible()
    
    return true
}