xcode - setValue:forUndefinedKey:]:

Question

FinalViewWithSending *newView = [[FinalViewWithSending alloc]initWithNibName:@"FinalViewWithSending" bundle:nil];
newView.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:newView animated:YES]; //it crashes here with a thread 1 error, SIGABRT error..

它说:

"Terminating app due to uncaught exception 'NSUnknownKeyException', 
reason: '[<FinalViewWithSending 0x1bef70> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key loginButton.'"

没有名为loginButton的变量，所以我不确定为什么我遇到错误...

谢谢

Answer 1

您收到错误，因为没有名为loginButton的属性。检查您的.xib文件。几乎可以肯定有一个指向FinalViewWithSending对象(可能是File的Owner)的错误链接，该对象指定了loginButton，即使该类在类代码中不存在。