监控键盘出现和消失,获取键盘高度

//注册键盘出现的通知

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(keyboardWasShown:)

name:UIKeyboardWillShowNotification object:nil];

//注册键盘消失的通知

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(keyboardWillBeHidden:)

name:UIKeyboardWillHideNotification object:nil];

- (void)keyboardWasShown:(NSNotification*)aNotification

{

//键盘高度

CGRect keyBoardFrame = [[[aNotification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];

}

-(void)keyboardWillBeHidden:(NSNotification*)aNotification

{

}