我正在尝试获取iOS键盘的高度。我已经完成并使用了涉及订阅通知的方法，如下所述:https://gist.github.com/philipmcdermott/5183731-(void)viewDidAppear:(BOOL)animated{[superviewDidAppear:animated];//Registernotificationwhenthekeyboardwillbeshow[[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(keyboardWillShow:)name:UI