In the specific View documentation you can find the XML attributes.
Quoting Android reference:
"The best place to find properties that apply to a specific View
is
the corresponding class reference, which lists all of the supported
XML attributes. For example, all of the attributes listed in the table
of TextView XML attributes
can be used in a style definition for a
TextView element (or one of its subclasses).
http://developer.android.com/guide/topics/ui/themes.html
Tip: Look at the Summary of the object's documentation (at the top) and click on XML Attrs
to jump directly to the XML attributes.
And for a complete list of properties: R.attr