title: Changing text from another activity
body: <p>How to dynamically change the content of a TextView from another part of the screen?</p>
  
  <p>I have a TabActivity class that draws a RelativeLayout that contains a TextView followed by a  with several tabs. Within each tab is a separate Intent. From one of the tab intents, I would like to change the text (via .setText) of the TextView from the parent TabActvity.</p>
  
  <p>Is this possible?</p>