Auto Layout iOS 11 Toolbar UIBarButtonItem with customView
Recently in our project there was a problem with a UIBarButtonItem that was using a customView. Before iOS 11 we did the layout via flexible spacing items. This didn't work anymore and so nothing was displayed. Because I didn't find an answer here on SO that really solved the issue for me, I looked into it and came up with a (admittedly kind of hacky) solution I wanted to share with you. Maybe it can help you or you have some feedback. This is mixed objc and swift code, hope you don't mind. As shown in the WWDC Video Updating Your App for iOS 11 : "And so now in iOS 11, UI toolbar and UI