Thank you for responding :)
It's because I have no error message during the launching of the application, I only have one error when I clicked on the screen and it is a nullpointerexception on a call back due by I have no map displayed I though.
By reading your message I understand something... I have to set a map file by using the method mapView.setMapFile? I though it was to specify the cache file for the map... (If I may it's not specify
here). So the map is no include, where can I find this kind of file?