问题
The DocInteraction sample code made available by Apple at http://developer.apple.com/library/ios/#samplecode/DocInteraction/Introduction/Intro.html (download: http://developer.apple.com/library/ios/samplecode/DocInteraction/DocInteraction.zip ) does not work when simulating on 4.3. It works fine on 4.2 though. I've looked through but don't get any errors or any warnings. Not really sure what's going on. Thought I'd ask here. I already reported it. It just loads a white screen.
Any ideas?
回答1:
Try replacing the line number 53 with following code in DITableViewController.h
@interface DITableViewController : UITableViewController <QLPreviewControllerDataSource, QLPreviewControllerDelegate,
It was missing the QLPreviewControllerDelegate delegation.
来源：https://stackoverflow.com/questions/6741565/docinteraction-sample-code-uidocumentinteractioncontroller-broken-on-ios-4-3-s