Android Buy SDK integration guide
Shopify's Android Buy SDK enables merchants to easily sell products in Android apps and allows their customers to checkout using the Shopify Checkout API or Android Pay.
The Android Buys SDK consists of a library, and sample code. The SDK provides native interfaces to a collection of Shopify web APIs. The SDK provides access to information about the shop, its products, and customer details and orders when a customer is logged in. It also supports creating a cart and performing checkout in a variety of ways. Later sections of this guide describe how to use these features in more detail.