Hi
I would like you to build a Appcelerator Titanium custom Module based on route-me or openstreetmap or [login to view URL] will need to be modified to support offline map support.
The details of module development can be found here [login to view URL]
And route me details can be found here [login to view URL]
Details of offline support for route-me can be found here
[login to view URL]
Thanks