不推荐使用UIKeyboardBoundsUserInfoKey

Question

如何删除这些警告：

UIKeyboardCenterBeginUserInfoKey is deprecated

UIKeyboardCenterEndUserInfoKey is deprecated

UIKeyboardBoundsUserInfoKey is deprecated

我在这些陈述中得到了警告：

CGPoint beginCentre = [[[notification userInfo] valueForKey:UIKeyboardCenterBeginUserInfoKey] CGPointValue];

CGPoint endCentre = [[[notification userInfo] valueForKey:UIKeyboardCenterEndUserInfoKey] CGPointValue];

CGRect keyboardBounds = [[[notification userInfo] valueForKey:UIKeyboardBoundsUserInfoKey] CGRectValue];

Answer 1

UIkeyboardboundsuserinfokey在IOS 6中不起作用..

使用UIKeyboardFrameBeginUserInfoKey或UIKeyboardFrameEndUserInfoKey密钥代替uikeyboardboundsuserinfokey

Answer 2

简单：只是不要使用这些键。

如果您确实阅读了文档，它会告诉您应该使用UIKeyboardFrameBeginUserInfoKey和UIKeyboardFrameEndUserInfoKey。

Answer 3

只需更改此

CGPoint beginCentre = [[[notification userInfo] valueForKey:UIKeyboardCenterBeginUserInfoKey] CGPointValue];

CGPoint endCentre = [[[notification userInfo] valueForKey:UIKeyboardCenterEndUserInfoKey] CGPointValue];

CGRect keyboardBounds = [[[notification userInfo] valueForKey:UIKeyboardBoundsUserInfoKey] CGRectValue];

到这个

CGPoint beginCentre = [[[notification userInfo] valueForKey:@"UIKeyboardCenterBeginUserInfoKey"] CGPointValue];

CGPoint endCentre = [[[notification userInfo] valueForKey:@"UIKeyboardCenterEndUserInfoKey"] CGPointValue];

CGRect keyboardBounds = [[[notification userInfo] valueForKey:@"UIKeyboardBoundsUserInfoKey"] CGRectValue];

看到区别？

 @"UIKeyboardBoundsUserInfoKey"

它适用于我

Answer 4

任何标记为已弃用的内容意味着它可以（并且很可能将）在SDK的任何未来版本中删除。如果您忽略这些警告，那么在将来发布较新版本的SDK时，您的代码很可能无法运行。

如果您收到有关此问题的警告，请查看文档（如jtbandes建议的那样），这将为您提供有关使用内容的信息。