Sale {#tap-to-phone-payment-txn-sale}
=====================================

Use this information to process a sale. This transaction combines an authorization and a capture into a single transaction.  
Follow these steps to process a sale.

1. Create a `TransactionParameters` object and provide the required information for the payment.

2. Retrieve the `transactionIntent` value 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.createTransactionIntent(transactionParameters)
   startActivityForResult(transactionIntent, MposUi.REQUEST_CODE_PAYMENT)
   ```
3. After the transaction is completed and the Summary screen is dismissed, the `onActivityResult` method is triggered. This action returns information about the previous 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()
               }
           }
       }
   }
   ```
4. You can get the full transaction object by retrieving the `latestTransaction` property from the `mposUI` object.

   ```
   val transactionObject = mposUi.latestTransaction
   ```