几个键盘通知

最新推荐文章于 2021-11-04 17:23:53 发布

转载最新推荐文章于 2021-11-04 17:23:53 发布 · 634 阅读

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本文介绍了如何使用 Objective-C 在 iOS 应用中监听键盘显示与隐藏的通知，包括键盘将要显示、键盘已经显示、键盘将要隐藏及键盘已经隐藏四种状态。

几个键盘通知每次都要找还是记录一下吧

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

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(keyboardShow:)
                                             name:UIKeyboardDidShowNotification
                                           object:nil];

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

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(keyboardHide:)
                                             name:UIKeyboardDidHideNotification
                                           object:nil];