A TextView with an ellipse set to a "tent" will not scroll if it has no focus.
Are you looking for a scroll tent regardless of focus?
If so, you can use TranslateAnimation with the LinearInterpolator to give it a constant scroll view. This is what I use and it works great.
DisplayMetrics dm = getResources().getDisplayMetrics();
TranslateAnimation m_ta = new TranslateAnimation(dm.widthPixels, -1 * (dm.widthPixels), 0f, 0f);
m_ta.setDuration(10000);
m_ta.setInterpolator(new LinearInterpolator());
m_ta.setRepeatCount(Animation.INFINITE);
TextView m_tv = (TextView)findViewById(R.id.tvMarquee);
m_tv.startAnimation(m_ta);
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