What does the iAd `UIViewController` category `canDisplayBannerAds` do?

Question

In iOS7, the iAds framework includes the category -[UIViewController canDisplayBannerAds].

What does this category do and how should I use it?

Answer 1

You actually need to look at the docs for originalContentView to learn this:

When a view controller enables banner ads, the system puts the view controller’s content view inside of a new content view that the system manages. This allows the system to dynamically resize the original content view when a banner ad is displayed, as well as managing the display of the banner ad itself. This property provides access to the original content view, rather than the containing view that manages banner ad display.