本文介绍了FirstResponder缺少重做:的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
为什么我在InterfaceBuilder的文件中的FirstResponder缺少redo:连接(在Received Actions列表中)? undo:存在，但redo:不存在.我该如何解决?
Why my FirstResponder in InterfaceBuilder's file is missing redo: connection (in Received Actions list)? undo: exists, but redo: doesn't. How could I fix it?
推荐答案
这是一个错误.解决方法是将其扔到文件中的某个位置:
This is a bug. The workaround is to throw this in a file somewhere:
@interface NSResponder (Redo)
- (IBAction)redo:(id)sender;
@end
然后在Interface Builder中建立连接.完成后，您可以删除此代码.
Then make your connection in Interface Builder. Once that is done you can delete this code.
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