On Android 1.0 there was a com.google.googlenav namespace for driving directions:   
[Route - Improved Google Driving Directions][1]  
But in newer SDK it was removed by some reason...  
[Android: DrivingDirections removed since API 1.0 - how to do it in 1.5/1.6?][2]
On BlackBerry there is also lack of APIs for such stuff:  
[how to find the route between two places in Blackberry?][3]

csie-tw gives a workaround (query gmaps for kml file and parse it):  
[Android - Driving Direction (Route Path)][4]  
Also [Andrea][5] made a [DrivingDirections helper classes][6] for Android.  
I wrote a little helper for this functionality, in j2me, so I would like to share my samples on Android and BlackBerry.  

**UPDATE**  
As it was stated in comments, it&#39;s not officially allowed [Google Maps APIs Terms of Service ][7]:
&gt;Google Maps/Google Earth APIs Terms of Service    
&gt;Last updated: May 27, 2009   
...  
&gt;10. License Restrictions. Except as expressly permitted under the Terms, or unless you have received prior written authorization from Google (or, as applicable, from the provider of particular Content), Google&#39;s licenses above are subject to your adherence to all of the restrictions below. Except as explicitly permitted in Section 7 or the Maps APIs Documentation, you must not (nor may you permit anyone else to):  
...  
&gt;10.9 use the Service or Content with any products, systems, or applications for or in connection with:   
&gt;(a) real time navigation or route guidance, including but not limited to turn-by-turn route guidance that is synchronized to the position of a user&#39;s sensor-enabled device;
 
and may be disabled for certain apps (somehow, at least on Android)... From [Geocode scraping in .NET conversation][8]:  
&gt;This is not allowed by the API terms of use.  You should not scrape
Google Maps to generate geocodes.  We will block services that do
automated queries of our servers.

&gt;Bret Taylor  
&gt;Product Manager, Google Maps 


Would be grateful for any alternatives and/or suggestions!  
Thanks!


  [1]: http://www.anddev.org/route_-_improved_google_driving_directions-t1892.html
  [2]: https://stackoverflow.com/questions/1612533/android-drivingdirections-removed-since-api-1-0-how-to-do-it-in-1-5-1-6
  [3]: https://stackoverflow.com/questions/1542252/how-to-find-the-route-between-two-places-in-blackberry
  [4]: http://csie-tw.blogspot.com/2009/06/android-driving-direction-route-path.html
  [5]: https://stackoverflow.com/users/223088/andrea
  [6]: http://home.ameliemedia.com/android-app-aroundme/#tips
  [7]: http://code.google.com/intl/uk/apis/maps/terms.html
  [8]: http://groups.google.com/group/Google-Maps-API/msg/7fa25a13e6153d02

All Driving Directions Solutions on Gang of Coders

Total of 1 Driving Directions Solutions

J2ME/Android/BlackBerry - driving directions, route between two locations