title: Broadcast listener to user touch in Android
body: <p>I want to know the time left before <code>screen off</code>.<br>
  I can easily get the <code>timeout</code> defined by system, but the counter resets with each touch the user do. so I need to reset the counter on my side as well.<br>
  I don't want to have an activity in foreground but to use (probably) a <code>broadcastReceiver</code>.</p>