First of all, I am using the interface builder in XCode 8.0 beta. I have a view embed in UINavigationController. When I try to add UIBarButtonItem and modify title in UINavigationController, but nothing show up.
However, if I set those things in the view instead, it shows up normally. When I try to drag an action from UIBarButtonItem to UINavigationItem (implemented by the view), I am not able to set the reference. But I can do it with those in UINavigationController.
Please tell me what is the right way to do it. Is the UIBarButtonItem and title should be set in UINavigationController? If yes, how to make them show up? If no, then how to I add action to the UIBarButtonItem?