如何知道UI键盘是否在iOS中出现？

Question

如何才能UIKeyboard在我的应用程序中找到它？

我不想使用任何委托方法UITextField.

请建议任何解决方案.

提前致谢.

Answer 1

测试一下:

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];