问题
i've installed Xcode 4.5 with iOS6 SDK and others old SDKs (from 4.3 to 6.0) for testing purpose.
Beautiful, but there is a BIG problem!
A new XIB file is generated for iOS6 compliant!
This is a problem, because my app need to run on older devices, not only 6.0+!
When i load the new view (ios6) in a 5.1 device, it silently crash with this error:
2012-09-24 22:00:17.090 App[14524:11f03] * Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: 'Could not instantiate class named NSLayoutConstraint'
How can i remove extra lines in XIB to make (xib and app) compatible with older ios version?
thanks a lot.
回答1:
Try changing this option of the xib:
Also make sure that Use Autolayout is off, because it's a iOS 6.0 feature.
来源：https://stackoverflow.com/questions/12571965/revert-xcode-4-5-new-xib-files-to-ios6