title: How to receive Contact changes : Android
body: <p>I want to implement a <code>BroadcastReceiver</code> to listen if contact has been deleted/ updated. I read about <code>ContantObserver</code> but I have no idea how to run this in application background, like <code>BroadcastReceiver</code>. </p>
  
  <p>How can I implement this? Is there any way to run <code>ContantObserver</code> in background of an application.  </p>
  
  <p>I followed <a href="https://stackoverflow.com/questions/1401280/how-to-listen-for-changes-in-contact-database">this FAQ.</a></p>