+ case R.id.map_source:
+ int source = AltosDroidPreferences.map_source();
+ int new_source = source == AltosDroidPreferences.MAP_SOURCE_ONLINE ? AltosDroidPreferences.MAP_SOURCE_OFFLINE : AltosDroidPreferences.MAP_SOURCE_ONLINE;
+ AltosDroidPreferences.set_map_source(new_source);
+ set_map_source();
+ return true;