I have loaded a KML file onto an Android device. What\'s the easiest mechanism for loading an overlay of that KML file into Google Maps? I do not want to upload the KML file
Assuming you are OK to show your KML on OpenStreetMap instead of Google Maps, you can also use osmdroid + OSMBonusPack (https://github.com/MKergall/osmbonuspack).
Depending on what you want to do:
You can just use the demo application "OSMNavigator" to load and display your KML file on the map (KML can be local or from a url).
Or you can use OSMBonusPack library in your application to display your KML content as you want.