Once the SDK is added to your project, using the Payment API can be done with the provided helper classes.

 

Make the payment


1. Make the payment

// Build the payment call
 MyPOSPayment payment = MyPOSPayment.builder()
         // Mandatory parameters
         .productAmount(13.37)
         .currency(Currency.EUR)
         // Foreign transaction ID. Maximum length: 128 characters
         .foreignTransactionId(UUID.randomUUID().toString())
         .build();

 // Start the transaction
 MyPOSAPI.openPaymentActivity(MainActivity.this, payment, 1);

 
2. Handle the result

In your calling Activity, override the onActivityResult method to handle the result of the payment:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // The same request code as when calling MyPOSAPI.openPaymentActivity
    if (requestCode == 1) {
        // The transaction was processed, handle the response
        if (resultCode == RESULT_OK) {
            // Something went wrong in the Payment core app and the result couldn't be returned properly
            if (data == null) {
                Toast.makeText(this, "Transaction cancelled", Toast.LENGTH_SHORT).show();
                return;
            }
            int transactionResult = data.getIntExtra("status", TransactionProcessingResult.TRANSACTION_FAILED);

            Toast.makeText(this, "Payment transaction has completed. Result: " + transactionResult, Toast.LENGTH_SHORT).show();

            // TODO: handle each transaction response accordingly
            if (transactionResult == TransactionProcessingResult.TRANSACTION_SUCCESS) {
                // Transaction is successful
            }
        } else {
            // The user cancelled the transaction
            Toast.makeText(this, "Transaction cancelled", Toast.LENGTH_SHORT).show();
        }
    }
}

Checking if the transaction is approved can be done by reading the transaction_approved boolean extra from the response:

boolean transaction_approved = data.getBooleanExtra("transaction_approved", false);

if (transaction_approved) {
    // Transaction is approved
} else {
    // Transaction was not approved
    // The response code is in the "response_code" string extra
}

 

Refund


1. Perform the refund

// Build the refund request
MyPOSRefund refund = MyPOSRefund.builder()
        .refundAmount(1.23)
        .currency(Currency.EUR)
        .foreignTransactionId(UUID.randomUUID().toString())
        .build();

// Start the transaction
MyPOSAPI.openRefundActivity(MainActivity.this, refund, 2);

 
2. Handle the result

The same as with the payment, in your calling Activity, override the onActivityResult method to handle the result of the refund:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // The same request code as when calling MyPOSAPI.openRefundActivity
    if (requestCode == 2) {
        // The transaction was processed, handle the response
        if (resultCode == RESULT_OK) {
            // Something went wrong in the Payment core app and the result couldn't be returned properly
            if (data == null) {
                Toast.makeText(this, "Transaction cancelled", Toast.LENGTH_SHORT).show();
                return;
            }
            int transactionResult = data.getIntExtra("status", TransactionProcessingResult.TRANSACTION_FAILED);

            Toast.makeText(this, "Refund transaction has completed. Result: " + transactionResult, Toast.LENGTH_SHORT).show();

            // TODO: handle each transaction response accordingly
            if (transactionResult == TransactionProcessingResult.TRANSACTION_SUCCESS) {
                // Transaction is successful
            }
        } else {
            // The user cancelled the transaction
            Toast.makeText(this, "Transaction cancelled", Toast.LENGTH_SHORT).show();
        }
    }
}

 

Payment Request


This functionality allows a merchant to create a payment request and send it as a SMS directly from a myPOS Smart device.

 
1. Perform Payment Request

// Build the payment request transaction
private static final int PAYMENT_REQUEST_REQUEST_CODE = 4;
   private void startPaymentRequest() {
       // Build the payment request
       MyPOSPaymentRequest paymentRequest = MyPOSPaymentRequest.builder()
               .productAmount(3.55)
               .currency(Currency.EUR)
               .expiryDays(60)
               .recipientName("John Doe")
               .GSM("0899070087")
               .eMail("")
               .reason("System test")
               .build();
   			
// Start the payment request transaction
MyPOSAPI.createPaymentRequest(MainActivity.this, paymentRequest, PAYMENT_REQUEST_REQUEST_CODE);
   }

 
2. Handle the result

The same as with the payment, in your calling Activity, override the onActivityResult method to handle the result of the Payment request:

@Override
	void onActivityResult(int requestCode, int resultCode, Intent data) {
	    if (requestCode == PAYMENT_REQUEST_REQUEST_CODE) {
			// The transaction was processed, handle the response
			if (resultCode == RESULT_OK) {
				// Something went wrong in the Payment core app and the result couldn't be returned properly
				if (data == null) {
					Toast.makeText(this, "Transaction cancelled", Toast.LENGTH_SHORT).show();
					return;
				}
				int transactionResult = data.getIntExtra("status", TransactionProcessingResult.TRANSACTION_FAILED);

				Toast.makeText(this, "Payment request transaction has completed. Result: " + transactionResult, Toast.LENGTH_SHORT).show();

				// TODO: handle each transaction response accordingly
				if (transactionResult == TransactionProcessingResult.TRANSACTION_SUCCESS) {
					// Transaction is successful
				}
			} else {
				// The user cancelled the transaction
				Toast.makeText(this, "Transaction cancelled", Toast.LENGTH_SHORT).show();
			}
		}
    }