IOS下获取当前用户设备中的键盘的高度

IOS下获取当前用户设备中的键盘的高度

NSDictionary *userInfo = [aNotificationuserInfo];

NSValue *aValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];

CGRect keyboardRect = [aValue CGRectValue];

CGFloat height = keyboardRect.size.height;