Android - Launching Google Navigation from an app

Question

I am currently in progress of an android app, which takes some coordinates by the user (Starting point from gps and destination defined by the user)

I would like my app

Answer 1

You can certainly guide them to a single point:

Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("google.navigation:q=" +mLat+","+mLong));
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);

Not sure about setting way points might be some way to do it, I think the API is undocumented so use at your own risk. You could have your app in the background listening to the GPS information and have it prompt the user at certain points.