topic Discover CardType is Null in Integration and Testing

Discover CardType is Null

erikhanson — Thu, 28 Apr 2022 15:20:31 GMT

Hello,

I'm running into an issue when trying to display the CardType from a creditCardMaskedType for a Discover card in a PaymentProfile. Other card types return properly, but for a Discover card, the CardType field is null. Is this expected behavior for a Discover card? Or is there another way of getting the CardType?

Thanks!

Re: Discover CardType is Null

mikey445 — Sat, 30 Apr 2022 00:34:22 GMT

 public static void main(final String args[])
    {
        String cType = null;

        System.out.println("Enter a credit card number: ");
        final Scanner input = new Scanner(System.in);
        final String cardNumber = input.next();

        if (cardNumber.startsWith("4"))
        {
            cType = "Visa";
        }
        else if (cardNumber.startsWith("5"))
        {
            cType =  "MasterCard";
        }
        else if (cardNumber.startsWith("6"))
        {
            cType =  "Discover";
        }
        else if (cardNumber.startsWith("37"))
        {
            cType =  "American Express";
        }
        else
        {
            cType =  "Unknown type";
        }

        final long total = sumOfEvenPlaces(Long.valueOf(cardNumber)) + (sumOfOddPlaces(Long.valueOf(cardNumber)) * 2);

        if (isValid(total))
        {
            System.out.println("The " + cType + " card number is valid");
        }
        else
        {
            System.out.println("The " + cType + " card number is invalid.");
        }
    }

On a stylistic note, Ctype should start with a lower case letter (e.g. CType). You'll have to experiment with the use of Scanner as well as I'm not sure my implementation will do what you're looking for.

Let me know if this doesn't work.

Re: Discover CardType is Null

jimmyy — Sat, 30 Jul 2022 18:58:27 GMT

The issue is CreditCardWidget has a required parameter onCreditCardWidgetChange which expects a function, it's missing in your code. You should change your code to pass that:

CreditCardWidget(
   cardNumber: card['cardNumber'],
   expiryDate: card['expiryDate'],
   cardHolderName: card['cardHolderName'],
   cvvCode: card['cvvCode'],
   showBackView: false,
   onCreditCardWidgetChange: (brand) {
      print(brand);
   },
),