Question

I have a UINavigationController based application. I want to achieve an effect of presenting (pushing) view controller while having a part of a previous controller visible. So I want to have an effect like this:

Ideally the bottom of the second image would be a part of first controller’s view.

Can this be done using UINavigationController methods, and if yes, how?

Answer 1

It is possible, but it requires quite a bit of efford.

Off the top of my head, I’d implement a custom container view controller, that has a UINavigationController an another custom container view controller (let’s call it PreviousVCContainer) as child view controllers. See Creating Custom Container View Controllers. The “inner container view controller” would provide the view on the bottom and have the previous view controller (the one with “First title”) as child view controller.

The idea is to connect the PreviousVCContainer with the UINavigationController in a way that it gets notified when the navVC is pushing or popping a vc. It would then go and look for the appropriate vc to display in the bottom view and add this vc as it’s childVC.

I hope that get’s you started. Let me know if you need more details on some specific points.