Is there any Android XML documentation? [closed]
The classes which have XML attributes, list them XML attributes in their own documentation. Attributes beginning with layout are documented in the containing layout class.
The manifest file is documented here. Google recently added a lot of new documentation, including documentation on XML resources. See this webpage on drawable resources.
There resources aren't comprehensive, so R.styleable is still often the best bet. R.attr is better if you just want to see all attributes, rather than the attributes available for a particular tag.