even with android support v7 included in my application
adding
android:background="?android:attr/selectableItemBackground"
makes my IDE, Eclipse throw an error (preventing me from compiling), notifying me that selectableItemBackground is only for min Api 11 and up.
How do I add this attribute to a background in XML?
assume that copying and pasting from a higher library is not a solution
Since the attribute is defined in a library (support v7), you would use it as a user-defined attribute: i.e without the android:
prefix:
android:background="?attr/selectableItemBackground"
The error you see is pointing out that ?android:attr/selectableItemBackground
is available for API versions >= 11. True, indeed.