When using an Android Library Project how do you reference xml resources properly?

Question

I have an Android Library Project that contains several styles/themes defined in its styles.xml file.

Normally, when referencing this style in some other xml layout

Answer 1

I just had this issue in Android Studio. It seems Android Studio didn't realise my library project was a library despite the project.properties stating android.library=true.

I fixed this issue by checking the "Is Library" checkbox in Project Structure.