Open Radar

 
Area:
UIKit

Summary:
I have been using `UINavigationBar.appearance().tintColor` to change the tint color of the buttons in the `UINavigationBar`. Until iOS 10.3.1, it was working perfectly. With Xcode 9 and iOS 11 this solution is no longer working. It seems like `UIButton` overwrites the tint color setting of `UINavigationBar`.


Steps to Reproduce:
1. Create a new project with a Single View, embed that view into a Navigation Controller
2. Add a Bar Button Item to the Navigation Bar
3. In the ViewController, add these lines to the `viewDidLoad` method:
    UINavigationBar.appearance().tintColor = UIColor.red
    UIButton.appearance().tintColor = UIColor.blue
4. Run the app. The button in the Navigation Bar will be blue.
5. Remove the second line (starting with `UIButton`)
6. Run the app again. The button is now red.


Expected Results: The tint color of `UIBarButtonItem` changes with `UINavigationBar.appearance().tintColor` and `UIButton.appearance().tintColor` doesn't change its tint color.


Actual Results: The tint color of `UIBarButtonItem` is inherited from `UIButton.appearance().tintColor`instead of `UINavigationBar.appearance().tintColor`


Version/Build: Xcode Version 9.0 beta 6 (9M214v), iOS 11.0 (15A5370a)


Additional information:
Attached screenshots where you can see that `_UIButtonBarButton` has the tint color of `UINavigationBar`, but `_UIModernBarButton` has the tint color of `UIButton`. I've also attached a test project where I was able to reproduce the issue. Here's a question regarding this issue on StackOverflow: https://stackoverflow.com/questions/45893605/changing-the-tint-colour-of-elements-in-uinavigationbar-ios-11