Get Smart App2App Overview

Welcome to the Get Smart App2App integration for Android. This integration allows your application to send payment requests directly to the Get Smart payment module and receive transaction results programmatically, without the need to implement complex payment processing logic.

What is App2App?

The App2App solution defines a connection method between the generic Get Smart Android application and an external third-party application. This integration enables your application to process secure card payments by leveraging the certified Get Smart payment infrastructure already installed on the device.

How It Works

The integration relies on standard Android Intent mechanisms to facilitate communication between two distinct applications installed on the same device:

Your external app initiates the payment process and receives results
The Get Smart app handles the secure transaction processing

The interaction follows a synchronous request-response model where your application generates an Android Intent, launches it using startActivityForResult, and receives the transaction result back through the standard onActivityResult callback.

Key Concepts

Understanding these core concepts will help you implement the App2App integration effectively and troubleshoot issues when they arise.

Android Intents

The App2App integration uses Android's Intent system for inter-application communication. An Intent is a messaging object you can use to request an action from another app component. In this case, you'll use a specifically named Intent (es.android.redsys.mPOS.movil.tpvAndroid_PAYMENT_REQUEST) to communicate with the Get Smart application.

Transaction Types

The App2App integration supports two primary transaction types:

Sale (Venta) - A standard purchase transaction
Refund (Devolución) - A return or refund of a previous transaction

Receipt Printing

The Get Smart financial application remains responsible for printing the merchant receipt (if applicable) and offering the option to print the customer receipt. Your application does not need to handle print logic.

Benefits

The App2App integration offers several advantages:

Simplified Integration - You do not need to implement low-level EMV or contactless payment logic
Certification Savings - By offloading the payment processing to the certified Get Smart application, you avoid the costs associated with certifying your own payment solution
Minimal Configuration - The integration does not require specific permissions in your application's AndroidManifest.xml file

Next Steps

Now that you understand the basics of the App2App integration:

Learn about the specific requirements in Prerequisites and Configuration
Follow the step-by-step tutorial in Quick Start: Your First Transaction
Explore the technical details in Architecture

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