How can I make my view resize in response to the in-call status bar from my nib?
I figured it would just be setting the resize properties, but they're not enabled for the root UIView.
(I think my main problem here is I don't know what any of this is called; I can't find any reference to the in-call status bar in any of the documentation except where it talks about the simulator menu command.)
What do you mean when you say that 'the resize properties aren't enabled for the root UIView'?
The in-call status bar doesn't have any particular special designation, and I don't think there are any APIs or notifications around it. Instead, your views should simply be set up to autoresize correctly.
Try creating a new navigation-based app in Xcode and study the autoresize settings on the table view in RootViewController.xib. Hopefully you'll see a delta between what Apple's set and what you've set in your project.