问题
I created an app using the iOS 5 Storyboard feature, and have decided I would like it to also run on iOS 4. How can I convert my Storyboard (Which only contains one ViewController) into an XIB? Also, will ARC compile for iOS 4?
回答1:
I don't think there is an automatic way to go from storyboard to xib. i think you will need to make the nibs and copy paste.
ARC will run on iOS 4. The compiler inserts the necessary extra code to free memory for you. ARC works from 4.0 on.
来源：https://stackoverflow.com/questions/8920233/convert-storyboard-to-xib