How to merge, merge or merge circles on Google Maps Api V2 Android

Question

This link How to join circles in Google Maps refers to the same issue, but not Android. So how can I join the circles?

I have 10 markers with their circles around them, when the user zooms out, he looks great, but if you zoom in, the circles overlap, so the shade of the fill gets darker and darker. I want the same hue inside the intersection of circles or to combine circles. I want the whole map to be tinted, but the circle is clean. Therefore, I am trying to use a polygon with a shadow throughout the map and add holes for each marker, but it does not work with 6 or more markers.

Thanks guys...