Displaying rout between two points in GMap, in android

I want to display the rout in google map, between two points(Latitudes and longitudes), and I am able to draw straight line between these points, now I开发者_如何学Go want to display rout. Please guide me or suggest some link.

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http://maps.google.com/maps?saddr=START&daddr=DESTINATION&output=kml

Connect the coordinates and draw some lines to show your route.