Foreground request

An overview of the Foreground request message.

Overview

The client app must implement a mechanism to send messages using Android intents and URI calls and to receive the result in a custom URI callback.

Foreground request

Using the foreground action, the user can bring to foreground Android POS App from a third-party app. For a typical foreground request, the client app must provide the following information:

Field Description Example Required Card terminal support
scheme The Viva's custom URL scheme, the host and the version. 'vivapayclient://pay/v1' Viva Wallet POS app for Android
merchantKey The merchant's key. For successful validation, should not be empty.
Deprecated: you may pass any value.
'SG23323424EXS3' Viva Wallet POS app for Android
appId The client app ID. For successful validation, should not be empty. 'com.example.myapp' Viva Wallet POS app for Android
action Set printing settings. For successful validation, should not be empty. 'set_printing_settings' Viva Wallet POS app for Android
callback The URI callback that will handle the result. For successful validation, should not be empty. 'mycallbackscheme://result' Viva Wallet POS app for Android

This action does not send back a response.

The above information elements must create a URI call, i.e.

String reqStr = "vivapayclient://pay/v1"
		+ "?merchantKey="MY_MERCHANT_KEY"
		+ "&appId=com.example.myapp"
		+ "&action=foreground"
		+ "&callback=mycallbackscheme://result";

Intent payIntent = new Intent(Intent.ACTION_VIEW, Uri.parse( reqStr));
payIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
payIntent.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
startActivity(payIntent);

Key to card terminal product categories

To understand the icons used on the above table, see the below table.

Product category Terminal models Icon
Android Card Terminals Android Card Terminal Ethernet, Android Card Terminal 4G, Mobile Card Terminal Plus, Mobile Card Terminal. Android Card Terminals
Viva Wallet POS app for Android Mini Card Reader, Pocket Card Terminal connected via Bluetooth or USB to the Viva Wallet POS app for Android. Android Card Terminals
Linux Card Terminals Countertop, IM20, S900, S800, D200. Linux Card Terminals

Get Support

If you would like to integrate with Viva Wallet, or if you have any queries about our products and solutions, please see our Get Support page to see how we can help!