UIDocumentInteractionController vs QLPreviewController on iOS

Question

Can anyone who used both comments: "What is the difference, and when should you use one over the other?" I spent the last couple of days adapting the code from the DocInteraction sample to my own application, and the more I am familiar with these two sets, the less differences between them:

• They both display documents.
• They both only display full screen.
• They both have "open" and "printed"
• They can be scaled using a small rectangle on the screen.

I just do not see the difference when switching between them, except for the color of the toolbar.

Of course, I am missing something (or am mistaken in relation to other points). Any thoughts?

Answer 1

The UIDocumentInteractionController uses the QLPreviewController to display. It allows you to use additional hooks for delegate methods.