title: activate an application when a power button is clicked
body: <p>i want to create such application in android which will be activated when i press sleep or power button twice  , is it possible to do that , by running an application in background and listening events from power button ?</p>
  
  <p>some times phone gets into sleep mode once it is idle , and to use any application user has to press
  sleep button and then he has to enter certain password to activate the phone. But i want to make make it activate my application when a power button is clicked without any other intervention </p>