title: notifyDataSetChanged example
body: <p>I'm trying to use in my <code>Android Application</code> the <code>notifyDataSetChanged()</code> method for an <code>ArrayAdapter</code> but it doesn't work for me. </p>
  
  <p>I found <a href="https://stackoverflow.com/questions/2345875/android-notifydatasetchanged">as answer here</a>, that <code>notifyDataSetChanged()</code> should run in the main thread, but there was no example for that.</p>
  
  <p>Could anybody send an example or at least a link?!</p>