Do you have an existing app that already uses the greenDAO library? We created DaoCompat as a compatibility layer that gives you a greenDAO like API, but behind the scenes uses ObjectBox to store your app's data.
Check out the DaoCompat documentation on how to easily migrate your app to ObjectBox. There is also an example app available.
Feel free to ask for help on Stack Overflow, or if you encounter a bug with DaoCompat create an issue.