title: How to notify a change from one tab to another?
body: <p>I am stuck on this one. I am making a call to a service which updates data in one tab.</p>
  
  <p>However, when I switch to another tab I want to notify the tab I switched to that the result has changed, and also update data on that tab to make a different service call.  </p>
  
  <p>Is there any way I can call setResult in the first tab so that, when the second tab is resumed, it will update its data depending on the result code in <code>onActivityResult()</code>?</p>