I am not able to get iOS to display my button to show the UISplitView master view when in portrait mode (iPad) or landscape (iPhone 6+).
Right now I am using the following code, but it's not doing anything...
detailViewController.navigationItem.leftItemsSupplementBackButton = true
detailViewController.navigationItem.leftBarButtonItem = displayModeButtonItem()
I tried putting that in the viewDidLoad() of my UISplitView subclass or in the viewDidLoad() of my detail main navigation controller.
It does not seem to do anything so far... Am I missing something ?
It turns out that I was calling these methods on my UINavigationController instead of my UIViewController.
It is now working properly if I do so.