currently going through implementation of in app billing and have done the following.
Updated manifest to include billing
Placed aidl file
aidl folder // com.android.vending.billing. "IInAppBillingService.aidl"
Then i also have the helper classes under "util" in the same directory
When running them as imports in my main activity i am getting an error when compiling, but missing variables are recognized when these are imported.
Since you put those files in your own package you have to import them from there. So instead of
it should be
and so on. I hope I was able to help you!
I guess I missed something from your question:
Leave the IInAppBillingService.aidl in the package where it is at but put all the other files (the whole util directory) in your main package and then import them from there.