I m trying to switch over to Storyboard from IB and code but got the following problem. Xcode created a @property with @synthesize and the viewDidUnLoad methods but I now don t need it and if I try to delete it, the code crashes. To make things worse, I in the meantime had connected it to a UIButton (I changed the class to allow this) by mistake. When it crashes, the code gives the message:
Terminating app due to uncaught exception NSUnknownKeyException , reason: [ setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key lock.
问题如下。 XCode在什么地方把这部法典放在首位,我不得不从哪里撤走?