I have always sort of wondered when to use a UIView vs. a UIViewController on the iPhone.
I understand that you shouldn't use a UIViewController unless it's a full-screen view, but what other guidelines are there?
For example, I want to build a modal overlay - a screen that will slide into place over the current screen. If this modal overlay is full-screen, should it be a UIViewController? The last time I built something like this, I subclassed UIViewController, but now I wonder if that was correct.
From Apple's View Controller Programming Guide for iOS:
"The most important role of a view controller is to manage a hierarchy of views. Every view controller has a single root view that encloses all of the view controller’s content. To that root view, you add the views you need to display your content."
"There are two types of view controllers:
Most apps are a mixture of both types of view controllers."