title: android - draw resizable circle on google map
body: <p>I'm trying to draw a resizable circle on top of my google map, which the user will be able to expand or shrink using touch gestures (for example to shrink the circle the user will pinch the circle on the screen, I want it to work like zooming in/out option in the map, only that just the circle will get bigger/smaller on the map).
  Is this possible to implement? And if so how would I go about accomplishing that.</p>
  
  <p>I searched Google and Stackoverflow and as I understand, I need to add a custom view on top of my map fragment and implement OnTouchListener to this View (and that is just the beginning). Can some one please advise on what to do or how to proceed?
  I can draw a circle on the map but I don't know how to get it to respond to touch events.</p>
  
  <p>Thanks in advance.</p>