private class ClickListener(setValue: (Int) -> (Unit), getValue: () -> (Int)) : View.OnClickListener {

    override fun onClick(v: View?) {
            val oldValue = getValue2()
            val newValue = v?.text.toString().toInt()
            if (newValue != oldValue) {
                if (oldValue != 0) {
                    v?.isSelected = false
                    v?.clearFocus()
                } else {
                    v?.isSelected = true
                    v?.requestFocus()
                    setValue(newValue)
                }
            }
    }
}