title: handling phone shutdown event in android
body: <p>Could you post a simple code to handle shutdown event.
  I need manifest and receiver.</p>
  
  <p>I need the following:
  I have a service running in background and I want to detect phone shutting down in order to make it in silent mode so that the terrible operator music doesn't play.</p>
  
  <p>After restarting the phone (I already have on boot receiver) the service will enable phone sound.</p>