I am trying to build an android native app with a world map in which certain countries are "selected". so for example 5 countries are colored green, 2 countries are colored yellow, and the rest of the countries are red.
From what I found so far you have to draw polygons, but it's a lot of work to draw every country on earth with a polygon. Is there a simpler way to do this? maybe another tool or api?
I found a similar question here but it was never answered.
Thanks in advance.