We are pleased to provide this Play Billing Library developer preview to help simplify the development process, allowing you to focus your efforts on implementing logic specifics to your app, such as displaying in-app products and purchasing items. This library includes several classes and features for you to use when integrating your Android apps with the In-app Billing service.
As of now, the Play Billing Library’s minimum supported API level is Android 2.2 (API level 8), and the minimum supported In-app Billing API is version 3.
For more details about this launch, checkout our blog post “Money made easily with the new Play Billing Library” – goo.gl/oQF75z
Sample app: Trivial Drive V2 – github.com/googlesamples/android-play-billing/tree/master/TrivialDrive_V2