Hi this is my first post in SO.

I'm using .UIKeyboardWillChangeFrame notification in order to get dynamic height of the keyboard and update other views accordingly.

But when I switch to an EMOJI or a Chinese Hand-writing keyboard in iPhone X simulator, UIKeyboardWillChangeFrame notification does not get called.

• ENGLISH keyboard ---> EMOJI keyboard ( X, not called )
• EMOJI keyboard ---> ENGLISH keyboard ( O, works fine )

It works just fine in simulators other than iPhone X (eg. iPhone 5, 6, plus..).

adding observer

NotificationCenter.default.addObserver(self,
                                           selector : #selector(self.keyboardWillChangeFrame(withNotification:)),
                                           name : .UIKeyboardWillChangeFrame,
                                           object : nil)

selector method

@objc func keyboardFrameWillChange(withNotification notification : Notification)
{
    if let size = (notification.userInfo?[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue
    {
        print("will display EMOJI with height : \(size.height)")
    }
} 

Only tested in iPhone X simulator and not in real device (hard to get one T_T)

XCode version : latest 9.1 (9B55) Simulator version : iPhone X (iOS 11.0.1), iPhone X (iOS 11.1)