Marquee title in Toolbar / ActionBar in Android with Lollipop SDK?

Question

I\'ve tried several different approaches, including the one found here (which in turn led me to trying both of the top answers to this question), as well as using reflection

Answer 1

Kotlin solution to set MARQUEE for both Title and Subtitle TextViews (it just finds all TextViews inside Toolbar):

findViewById(R.id.action_bar)?.let {
    setToolbarTextViewsMarquee(it)
}

fun setToolbarTextViewsMarquee(toolbar: Toolbar) {
    for (child in toolbar.children) {
        if (child is TextView) {
            setMarquee(child)
        }
    }
}

fun setMarquee(textView: TextView) {
    textView.ellipsize = TextUtils.TruncateAt.MARQUEE
    textView.isSelected = true
    textView.marqueeRepeatLimit = -1
}

So it's not necessary to add Toolbar view (android.support.v7.widget.Toolbar or androidx.appcompat.widget.Toolbar) to xml layout

You can use the default Toolbar which AppCompat theme automatically adds: