Kotlin create a snackbar

In Kotlin like so

Snackbar.make(binding.root, "My Message", Snackbar.LENGTH_SHORT).show()

Refer this for more details

and then here's your modified code which will show snack bar

fun onSNACK(view: View){
    //Snackbar(view)
    val snackbar = Snackbar.make(view, "Replace with your own action",
            Snackbar.LENGTH_LONG).setAction("Action", null)
    snackbar.setActionTextColor(Color.BLUE)
    val snackbarView = snackbar.view
    snackbarView.setBackgroundColor(Color.LTGRAY)
    val textView =
            snackbarView.findViewById(com.google.android.material.R.id.snackbar_text) as TextView
    textView.setTextColor(Color.BLUE)
    textView.textSize = 28f
    snackbar.show()
}