如何在 iOS9 中获取透明的 UIToolbar 或 UINavigationBar

Question

I would like an entirely transparent UIToolbar and/or UINavigationBar. I have tried the many suggestion but didn't works. This is my Code for navBar

  navigationController?.navigationBar.setBackgroundImage(UIImage(), forBarMetrics:.Default)
    navigationController?.navigationBar.shadowImage = UIImage()
    navigationController?.navigationBar.translucent = true

This is a good example "the App Store"

Answer 1

Just make sure you don't have something behind your tool bar. Like a collection view and so on.