title: Start application in background when the phone rings on on Android phone
body: <p>I am making an application which needs to run when there is a incoming call on an Android phone. I want that my application to just listen to incoming calls and run its own <code>Activity</code> in the background. Actually I am making an application which works like when there is a incoming call then an <a href="http://en.wikipedia.org/wiki/Light-emitting_diode" rel="nofollow">LED</a> blinks on the Arduino board.</p>