title: Android: Viewing Two Activities in One Screen
body: <p>I'm looking for the simplest way to have two activities displayed at once, so that one Activity always remains visible, and the other changes with user interaction.</p>
  
  <p>In other words:</p>
  
  <ul>
  <li>I currently have code for a program with several Activities.</li>
  <li>The user can navigate between these activities.</li>
  <li>I want to add a new Activity that will always be visible alongside what I already have.</li>
  <li>When the user navigates from the current Activity to another one, this new "side Activity" will remain visible.</li>
  </ul>
  
  <p>I've seen many different ideas for doing something similar, but haven't been able to adapt them to my needs.</p>
  
  <p>Any help would be appreciated.</p>