检测iPad键盘隐藏按钮 [英] detect iPad keyboard Hiding button

问题描述

嗨有没有办法检测iPad键盘隐藏按钮？我的意思是当用户按下此按钮时：

Hi is there any way to detect iPad keyboard hiding button ? i mean when user press this button :

会发生什么事情！

推荐答案

我不是确定你想要完成什么，但也许这可以帮助你：注册 NSNotificationCenter 以接收UIKeyboardWillHideNotification和/或UIKeyboardDidHideNotification。

I'm not sure what you want to accomplish, but maybe this can help you: Register with NSNotificationCenter to receive the UIKeyboardWillHideNotification and/or UIKeyboardDidHideNotification.

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

...

- (void) myKeyboardWillHideHandler:(NSNotification *)notification {
    NSLog(@"Keyboard wants to hide. What a coward.");
}

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