Marque Title of a Toolbar page

gistfile1.txt

Most code I saw for this was to create custom layout.  Project I did not want to do this but do it for only a specific activity.  Here is how to do it in the activity in onStart()

    override fun onStart() {
        super.onStart()
        
        val toolbarViewGroup = findViewById<ViewGroup>(R.id.action_bar)  // standard action layout from theme
        
        toolbarViewGroup?.let{ viewGroup ->
            // find the textview title since its in combined layout
            val textView = viewGroup.children.find { (it is TextView) } as TextView  
            textView.ellipsize = TextUtils.TruncateAt.MARQUEE
            textView.marqueeRepeatLimit = 5
            textView.isSelected = true  // this is needed for marquee to work
        }
    }


XML for the activity did not have to be changed