How to check purchases on Google Play?

Question

Android

Good afternoon! I make in-app purchases. I use the code from the demo project, which has a method for checking purchases: I wanted to clarify how best to check: on the server or locally? In the first case, there may be problems in the absence of the Internet.
private boolean verifyDeveloperPayload(Purchase p)

Answer 1

Only on the server!
No Internet - let them look!