I am using this code:
mediaLibraryPopover = [[UIPopoverController alloc]
initWithContentViewController:avc];
[self.mediaLibraryPopov
EDIT: Regarding the down-votes. First a fun and relevant story:
http://www.folklore.org/StoryView.py?story=Negative_2000_Lines_Of_Code.txt
I posted the answer below in order to help coders that might have been stuck in the mindset that iPad/iPhone still needed separate execution paths when presenting a media picker UI. At the time of my original post this was not clear in the other answers. This solution path simplified my code and the future maintenance of my App. I think others might find this perspective useful because sometimes removing the right lines of code can be a good solution.
End of edit.
If you already have a working program and just want to get rid of the depreciation warning this could work for you.
In my code, and in my understanding, Popovers were introduced for the iPad and are iPad specific. Apple seems to have changed that. So, if you already have a working program that uses something like this:
if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
// use popovers
else
// don't use popovers
what you can do is just get rid of the iPad specific code (which is probably the code using Popovers) and have your program run the same instructions for both iPhone and iPad. This worked for me.