How to capture barcode scanner input when EditText is being focus

I want to differentiate keyboard input and barcode scanner input. I am able to capture barcode input when it is not focused on EditText.

override fun dispatchKeyEvent(event: KeyEvent?): Boolean {
    if (event?.action == KeyEvent.ACTION_MULTIPLE) {
        // Barcode Scanner event
    }
    return super.dispatchKeyEvent(event)
}

However, when the focus is on the EditText, it only dispatch KeyEvent.ACTION_UP and KeyEvent.ACTION_DOWN for pressing the scan button. The text is written to EditText directly.

I have tried to extend EditText and override dispatchKeyEvent on EditText instead of Activity but it still does not dispatch KeyEvent.ACTION_MULTIPLE.

Am I missing something? Where is the KeyEvent.ACTION_MULTIPLE being consumed?