Android Question GooglePlayBilling: LaunchBillingFlow from any activity?

if you are using B4XPages project you can call from any page using:

Billing is declared at B4XMainPage.

No sorry, I don't use B4XPages in my app. It's an existing app with several activities and I'm switching from the older in-app billing library.

You can call it from any activity. The event will be raised in the activity where you called LaunchBillingFlow.

In a non-B4XPages, it is recommended to declare and initialize the BillingClient in the Starter service (though not a must).

Thank you Erel! After a few tests I'm now using 2 BillingClient objects, which seem to work fine: one during app start to check for owned products and another one from the in-app purchase activity where I'm listing all products and LaunchBillingFlow is called. I just have to make sure to refresh the other one so they're in sync after the user purchased an item. Seems to be working now as I want.