Android Billing Library is an open-source Android library to work with Android Market’s in-app billing service.
The library provides high-level functions (as simply as requestPurchase(“android.example.purchased”)) for the full in-app billing specification, in addition to an obfuscated transaction database that is automatically populated and can be easily queried. The code also works as an example in-app billing implementation.
This is our third open-source contribution, with more to come shortly. If you’re interested in in-app billing, we invite you to fork the code on github and contribute with issues or pull requests.