Reset request

An overview of the Reset request message for Android.

• Overview
• Reset request
• Reset response
• Key to card terminal product categories
• Get Support

Overview

👉 The Reset request is used to perform either a soft or full reset of the POS application.

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.

• Reset request originating from client app to reset the POS application.
• Reset response originating from card terminal app to return the result of the Reset request.

Reset request

For a typical Reset 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'	✅
merchantKey	The merchant's key. For successful validation, should not be empty. Deprecated: you may pass any value.	'SG23323424EXS3'
appId	The client app ID. For successful validation, should not be empty.	'com.example.myapp'	✅
action	Reset action. For successful validation, should not be empty.	'reset'	✅
softReset	A flag indicating whether the application will make a soft or a full reset. If value is false, a full reset will be made If value is true, a soft reset will be made If parameter is excluded or blank, a soft reset will be made	'reset'
callback	The URI callback that will handle the result. For successful validation, should not be empty.	'mycallbackscheme://result'	✅

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

Intent payIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("vivapayclient://pay/v1"
			+ "?merchantKey=MY_MERCHANT_KEY"
			+ "&appId=com.example.myapp"
			+ "&action=reset"
			+ "&softReset=true"
			+ "&callback=mycallbackscheme://result"));

payIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
payIntent.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
startActivity(payIntent);

Reset response

After executing a Reset request, the Card Terminal App responds with a response result to indicate if the Reset request has been successful or not.

The result is received as a URI in the callback activity intent:

Uri result = getIntent().getData();

The table below summarises the contents of an approved response.

Field	Description	Example	Card terminal support
callback	The URI callback that will handle the result.	'mycallbackscheme://result'
status	The status of the request.	'success'
message	A string containing information about the request status.	'Full reset successfully completed!'
action	Reset action.	'reset'

A Reset response result looks as follows:

Key to card terminal product categories

To understand the icons used on the above tables, 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.
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.
Linux Card Terminals	Countertop, IM20, S900, S800, D200.

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!