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

 

Receive POS info


Add this to your AndroidManifest.xml file:

<queries>
	<package android:name="com.mypos" />
</queries>

 

Here you can find simple info about myPOS terminal like TID, currency name, currency code, merchant info, etc.

MyPOSAPI.registerPOSInfo(MainActivity.this, new OnPOSInfoListener() {
            @Override
            public void onReceive(POSInfo info) {
                //info is received
            }
        });

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())
	 // Optional parameters
	 // Enable tipping mode
	 .tippingModeEnabled(true)
         .tipAmount(1.55)
	 // Operator code. Maximum length: 4 characters
	 .operatorCode("1234")
	 // Reference number. Maximum length: 20 alpha numeric characters
	 .reference("asd123asd", ReferenceType.REFERENCE_NUMBER)
	 // Set print receipt mode
	 .printMerchantReceipt(MyPOSUtil.RECEIPT_ON)
	 .printCustomerReceipt(MyPOSUtil.RECEIPT_ON)
         .build();

// If you want to initiate a moto transaction:
payment.setMotoTransaction(true)

// Or you want to initiate a giftcard transaction:
payment.setGiftCardTransaction(true)

// 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
}