How do I add a left bar button without overriding the natural back button?

Question

I have a project that uses UIViewControllers embedded in navigation view controllers, so the back button is automatically set up for me whenever I segue into any detail of m

Answer 1

These two lines with do the trick. Set leftItemSupplementBackButton to true, and then add leftBarButtonsItems.

self.navigationItem.leftItemsSupplementBackButton = true
self.navigationItem.leftBarButtonItems = [barButton]