title: Reset Android textview maxlines
body: <p>I want to make a TextView that is collapsable by user's touch.
  When the TextView collapsed, I set <code>textView.setMaxLines(4);</code>.
  How to I clear this state in my expand method?
  I can only think of call <code>setMaxLines()</code> with a value large number like <strong>10000</strong>.</p>
  
  <p>Are there better ways to implement this?</p>