Android :: Resource Files XML Imports

Does android resource files for values and layouts have any way to import other xml files. This is a good approach for products, where there is a core module and many sub modules. The Submodule may also use some of the core defined key value pairs etc. Also, in case with a module, if the view is very complex.. better to manage them as different xml's. Are there any other approach to handle this.. by way R inheritance etc.. I suppose only one R supported per application.