Sale

Utilizing the doSale Method in the PayContactless Embed SDK

Overview: The doSale method of the PayContactless Embed SDK is a pivotal function for executing transactions within merchant applications. Primarily, it is designed to process and receive payments.

Parameters:

  1. Amount:

    • Description: Denotes the transaction's value as specified by the user.

    • Constraints:

      • Should be a whole number, with its length capped at 12 digits.

      • Exclude any separators or currency symbols.

    • Examples:

      • A payment amount of $100 should be conveyed as 10000, where the trailing two digits represent cents.

      • Conversely, $1.01 is represented as 101.

  2. Description:

    • Description: Provides contextual information detailing the purpose or reason behind the payment. It could relate to the product/service name, a brief summary, or any relevant description the merchant deems necessary.

  3. Currency Code

    • Description: The currecy value of the transaction. It has be numeric code of ISO 4217 format.

    • Examples:

      • 566 for Naira instead of NGN

  4. Activity

    • Description: The current activity. Payment page is started as a new activity. In order to start payment activity Embed SDK needs the current acitivity of the app.

  5. RFU Map

    • Description: RFUMap (Reserved for future use) object is used to transfer key value pairs between backend system and merchant application

  6. TransactionResultListener:

    • Description: This interface is vital as it captures and manages transaction outcomes, be it success or failure scenarios.

Usage: To implement the doSale function in your application, ensure you're capturing the correct parameters, especially the format for the "Amount" and supplementing the necessary information in the "Description."

By adhering to these guidelines, you enable a precise and seamless transaction process, elevating the user experience within your application.

PayContactlessEmbed.getInstance().doSale(@NonNull String amount, @Nullable String description, @Nullable String currencyCode, @NonNull FragmentActivity activity, @Nullable Map<String, String> rfuMap, @NonNull TransactionResultListener listener)

Please set empty map value for rfuMap instead of null on SDK version 3.4.11. This issue will be fixed with the next version.

If currency parameter is set null, the default currency is used for transaction. The default currecny is Naira in SDK.

When a transaction is completed, the TransactionResult class is received on onCompleted method, these class fields can be used for the payment result screens.

Transaction Listener

public interface TransactionResultListener {
   void onCompleted(TransactionResult transaction);
}

Transaction Result

data class TransactionResult(
    var paymentType: String?,
    var status: String,
    var payWithCardResult: Transaction? = null
    var payWithLinkResult: PayWithLinkResult? = null
    var error : ErrorData? = null
)

Field NamesField DescriptionsValues

Payment Type

return the data in which method in use for this transaction

object PaymentType {

const val CARD = "Card"

const val PAY_WITH_CARD = "PayWithCard"

const val ACCOUNT = "Account"

const val QR = "QR"

const val USSD = "USSD"

}

Status

result of the transaction request

object TransactionResult {

const val SUCCESS = "Success"

const val FAIL = "Fail"

const val CANCEL = "Cancel"

const val TIMEOUT = "Timeout"

}

PayWithCardResult

Returns only after completing tap with card payment

PayWithLinkResult

Returns only after completing link payment

Error

Check 6.1 Error Handling section

Transaction Data

data class Transaction (
    var type: String? = null
    var amount: String? = null
    var code: String? = null
    var date: String? = null
    var time: String? = null
    var respCode: String? = null
    var respDesc: String? = null
    var rrn: String? = null
    var authCode: String? = null
    var stan: String? = null
    var cardNumber: String? = null
    var cardType: String? = null
    var cardBrand: String? = null
    var aid: String? = null
    var isPinUsed = false
    var rfuList: Map<String, Any>? = null
)
Field NamesDescriptionsSample Values

type

type of the transaction

'PAYMENT'

amount

using amount value in the transaction

'150000'

code

a unique code of the transaction. It is used for finding the transaction.

'1D9F9EE737CE1262'

date

transaction date “yyyymmdd”

'20220823'

time

transaction time “hhmmss”

'080905'

respCode

Response Code of the transaction

'00'

respDesc

Response Description of the transaction

'Success'

rrn

Reference Retrieval Number of the transaction

'202208230809'

authCode

Authorization Code of transaction

'080905'

stan

System Trace Audit Number of the transaction

'15590'

cardNumber

masked pan of the card using in the transaction

'************6375'

cardType

type of the card using in the transaction

'CREDIT'

cardBrand

brand of the card using in the transaction

'VISA'

aid

Application Identifier of the card using in the transaction

'a0000000031010'

isPinUsed

is pin used in this transaction or not

false

rfuList

RFUList (Reserved for future use) object is used to transfer key value pairs between backend system and merchant application

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