Google Play Purchase API will be arranged.

Hello,
https://github.com/android/play-billing-samples/tree/main/TrivialDriveJava

I need a developer to edit this purchase code you see for my project.
This code should be run through my design.
There are some actions I want to take when a subscription is purchased or a product is purchased. I need a developer to do these operations.

My maximum budget for this job is $60.
Do not offer more.

Regards.