In drawing application we can identify when the user is starting to draw and moving the finger to make a line/shape. I\'m trying to do the same on a map, how can I do this?<
Map Kit Polyline or Polygon Drawing - https://github.com/tazihosniomar/MapKitDrawing
This link contains demo project for drawing polygons on Apple Map. But, logic remains the same for Google Map View. So, you can copy implementation logic from this and apply it on Google Map.
I hope this will help you.