iOS11-无法更改导航栏高度

我正在开发一个应用程序,我刚刚升级到Xcode 9/Swift 4,并且还将我的iPhone升级到了iOS 11.当我安装iOS 11时安装了应用程序,所有看起来都没问题,直到我从Xcode运行它.现在我陷入了默认的NavBar高度.

我用来更改高度的代码不再有效:

class CustomNavControllerVC: UINavigationController
{
    let navBarHeight : CGFloat = 64.0
    let navbarBackButtOnColor= UIColor(red: 247/255, green: 179/255, blue: 20/255, alpha: 1)

    override func viewDidLoad()
    {
        super.viewDidLoad()

        print("CustomNavControllerVC > viewDidLoad")
    }

    override func viewDidLayoutSubviews()
    {
        print("CustomNavControllerVC > viewDidLayoutSubviews")

        super.viewDidLayoutSubviews()

        navigationBar.frame.size.height = navBarHeight
        navigationBar.tintColor = navbarBackButtonColor
    }

    override func didReceiveMemoryWarning()
    {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
}


// In my VCs

override func viewDidLoad()
{
    customizeNavBar()
}


func customizeNavBar()
{
    let navbarBackItem = UIBarButtonItem()
    navbarBackItem.title = "Înapoi"
    navigationItem.backBarButtOnItem= navbarBackItem

    let navbarImageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 55, height: 20))
    navbarImageView.cOntentMode= .scaleToFill

    let navbarLogo = UIImage(named: "NavBarLogo.png")
    navbarImageView.image = navbarLogo

    navigationItem.titleView = navbarImageView
}

到目前为止,我在这个问题上唯一能找到的是:

iOS 11导航栏高度自定义

iOS11自定义导航栏高度

如何在iOS 11中正确设置UINavigationBar高度

但不幸的是,所提供的信息并没有帮助.

有什么想法/建议吗？