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Processing an Offline Sale

This section describes how to process an offline sale. This transaction is also known as a deferred authorization
or store and forward
. Offline sale transactions can only be performed on a terminal that has been used to process at least one online transaction.

When internet connectivity is not available, an offline sale can be used to capture the transaction details. Stored sale transactions must be submitted for authorization when internet connectivity becomes available. For more information, see Submitting an Offline Transactions Batch for Authorization. Only process offline sales if required. The recommendation is to process online sale transactions whenever possible. For more information, see Sale.

Follow these steps to process an offline sale:

Create a

TransactionParameters

object and provide the required information for the payment.

Retrieve the

transactionIntent

from the

mposUi

object and use the

startActivity

method to initiate the transaction flow.

val transactionParameters = TransactionParameters.Builder()
            .charge(BigDecimal("1.00"), Currency.EUR)    
            .customIdentifier("yourReferenceForTheTransaction")
            .build()

val transactionIntent = mposUi.offlineModule.createTransactionIntent(transactionParameters)
startActivityForResult(transactionIntent, MposUi.REQUEST_CODE_PAYMENT)

After the transaction is completed and the Summary screen is dismissed, the

onActivityResult

is triggered. This action returns information about the last transaction.

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) 
{
    super.onActivityResult(requestCode, resultCode, data)
 
    if (requestCode == MposUi.REQUEST_CODE_PAYMENT) {
        when (resultCode) {
            // Result code from a successful transaction
            MposUi.RESULT_CODE_APPROVED -> {
               val transactionIdentifier = data?.getStringExtra(MposUi.RESULT_EXTRA_TRANSACTION_IDENTIFIER)
               Toast.makeText(findViewById(android.R.id.content),"Transaction approved!\nIdentifier: $transactionIdentifier", Toast.LENGTH_LONG).show()
            }
            // Result code from a declined, aborted or failed transaction
            MposUi.RESULT_CODE_FAILED -> {
               Toast.makeText(findViewById(android.R.id.content), "Transaction was declined, aborted, or failed", Toast.LENGTH_LONG).show()
            }
        }
    }
}