title: Unable to refer to a Textview in overlay class
body: <p>I have been trying to update a TextView field, when i Tap on the screen. I have implemented the Overlay class successfully, but I am unable to get a reference to the TextView field from the overlay class. I have passed 'context' from my activity class to overlay class.
  What are the ways to get reference to the Textview in the overlay class ?</p>