title: Invoking activity from APK in another android application
body: <p>I have an android application that starts an activity and is running well. I need other developers to be able to integrate my APK into their applications in such a way that they can start the activity in my APK from their android applications. </p>
  
  <p>What are the ways of achieving this? </p>
  
  <p>Thanks
  George</p>