How to display the actual route (static)

Could you please help me with displaying the actual route on the map. I would like to include a static route from point A to point B in my school project application, and I am using OSMdroid's API for displaying the map, and YOURS for getting the kml file. I would like to show only the route, nothing more, like you do in Planning mode -> Directions, and when you set two points, you draw a route betweeen them, only that.

So I suppose I need RouteOverlay.java Route.java YOURSRouter.java what else? And how/where do I actually call the function for drawing on the map? I have a class that shows a map with some markers on it, I have geopoints for my current location, and the markers, so when I click on some marker, I would like to show a dialog, and a button ("Take me there") which I have already done, and I would like to draw the route between my location, and the marker when I click the button.

Thank you in advance, and please consider that I am an Android/Java newbie.