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.
More: mode=train also gives driving... There's GOT to be a way to do this...
Another Edit: I realized just now that I'm pretty sure that it doesn't exist, because after experimenting with terms I realized that I should instead launch a Google Maps intent with a bus search, but does anyone know how to do this?
After a bunch of guessing and hunting around, I have decided that it is impossible to launch directly to bus navigation, because that would involve CHOOSING a bus for the person to ride, which wouldn't make sense.
Instead, you can launch them to a Google Maps search to the destination like so, thank you to this answer to a similar question:
"http://maps.google.com/maps?daddr=lat,long&dirflg=r"
With the &dirflag specifying public transit. (Why the "r" I have no idea...)