This android game app can reveal its real source code for the whole game including the code for
Google AdMob banner ads, interstitial ads, and Google Play Billing In-app product integration.
Why need the headache of putting piece meal code together when you can see the real code in action.

https://play.google.com/store/apps/details?...asys.grazomvity

https://pictr.com/images/2019/08/25/5NtIhn.md.jpg
https://pictr.com/images/2019/08/25/5NtbcB.md.jpg