I'm currently developing an application that will launch a navigation intent. I know that this isn't an official API, but it works perfectly the way I want it to.

I allow the user to select driving, walking, and bus navigation to a location. The intent to launch directly into Google Maps Navigation looks like this:

google.navigation:ll= + a latitude and longitude, then + &mode= then your mode of transportation. For example, to navigate using walking directions to a certain area:

google.navigation:ll=blah,blah&mode=w

Driving is default, or &mode=d, and biking is &mode=b, but I can't figure out bus (public transit).

Has anyone done this before?

Thanks!

Edit: So far, I've found that mode=public gives bike directions, mode=transit gives driving, frustratingly, mode=bus also returns bike directions.