Integrate Twillio Chat & In-App Purchase in Android Native Application

I have an application in which I need to integrate :
1. Twillio Chat SDK
2. In-App Purchases.

I need it to be done before this weekend.

Sourcecode I have, IN-App Purchases plans I have, APIS are already developed.

Just need to integrate 2 things.

Above 2 things already done in IOS app and need to integrate in Android Native Application based upon Java.

Thanks