You will find the following files in the Kit.
HesabeCrypt.java
Used for encryption & decryption of Request & Response packets. Use encrypt() function for encrypting the packet and decrypt() for decrypting.
Constants.java
Contains Consants for Base URL, Merchant Code, Access Code, Secret Key & IV (used for Encryption)
MainActivity.java
Provides guidance on how to invoke the Checkout API to integrate with Hesabe Payment API 2.0 and redirect to Payment URL.
WebViewActivity.java
Contains the Android WebView which uses webkit engine to display Hesabe Payment page in android activity.
ApiInterface.java
Use to invoke checkout endpoint of Hesabe API
RetrofitClientInstance.java
Used to create instance of Retrofit
Libraries You will have to include the following Libraries: Retrofit It is a type-safe REST client for Android and Java that helps to consume RESTful web services. Visit https://square.github.io/retrofit/ to learn more about Retrofit.