UIDocumentInteractionController vs QLPreviewController on iOS

Question

Can anyone who has used both comment on "What's the difference, and when should you use one over the other?" I have spent the last couple days adapting code from the DocInteraction sample to my own app, and the more familiar I become with these two kits, the less difference I see between them:

• They both display docs
• They both only present full screen
• They both have "open in" and "print"
• They both can zoom from a small rect on screen

I just don't see any difference when switching between them except the color of the toolbar.

Of course I'm missing something (or wrong about those other points). Any thoughts?

Answer 1

UIDocumentInteractionController uses QLPreviewController to display. It allows for additional hooks for delegate methods.