Performing a Pre-Authorization

This section describes how to perform a pre-authorization for an initial amount. A pre-authorization transaction places a temporary hold on the customer's payment card that can be captured at a later time.

Most authorizations expire in 5 to 7 days. The issuing bank sets the length of time before expiration. When an authorization expires with the issuing bank, your bank or processor might require you to re-submit an authorization request and include a request for capture in the same message.

Follow these steps to perform a pre-authorization:

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")
            .autoCapture(false)
            .build()

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

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

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()
            }
        }
    }
}