How can I use UIModalTransitionStylePartialCurl on a UIView that does NOT take up the whole screen?

Question

In Apple\'s official Maps app for the iPhone, there is a small \'page curl\' button in the lower-right corner. When you press it, the map itself peels back to reveal some optio

Answer 1

I had a slight hiccough confusing

.modalTransitionStyle

and

.modalPresentationStyle

The first one goes on the TARGET viewController, e.g., the one you want underneath. The second goes on the PARENT viewController, e.g. the one that actually gets distorted by the curl. The OP got this right, but I got it wrong, and it was a frustrating 10 minutes before I figured it out. Throwing it on this post in case it gives someone else the head slap I needed.