Create library for aidl module (.aar) and generate apk for my application

Hi,

I have written application where i have aidl module included and also service which calls aidl functions. I want to build library for aidl module in .aar format and apk for my application in single build. How can i do that?. Please help me to resolve this issue so that i can build library (only for aidl module)and apk .

Thanks in Advance,
Cl