Please Add billingAddress Feature in tokenizeCreditCard

[BunnyBuddy]

Previously, we managed this functionality through the backend. However, this approach posed challenges in saving user information. Now, with the utilization of hoisted fields on our website, we've achieved a solution. However, the same hoisted fields feature isn't available in our mobile app due to the limitation of the JavaScript SDK. Interestingly, I've noticed a similar method in the native Android and iOS SDKs of Braintree. To address this issue, we need to implement a comparable mechanism in our mobile app. Currently, the package we're using doesn't offer a straightforward way to include billingAddress during tokenization.

I kindly request your assistance in adding this particular feature to the package. Your support in this matter would be greatly appreciated.

[BunnyBuddy]

Okay, I got a little in it and figured this out.
If someone needs this, then you gotta do it manually.
First of all make a copy of this package if you're using the package manually in your code.

/// FOR ANDROID

1. Go to the file here (flutter-braintree/android/src/main/java/com/example/flutter_braintree/FlutterBraintreeCustom.java)
2. Where you see,

 if (type.equals("tokenizeCreditCard")) {
                tokenizeCreditCard();
            } else if (type.equals("requestPaypalNonce")) {
                payPalClient = new PayPalClient(this, braintreeClient);
                payPalClient.setListener(this);
                requestPaypalNonce();
            } else {
                throw new Exception("Invalid request type: " + type);
            }

just add another else if as,

else if (type.equals("tokenizeCreditCardWithBillingAddress")) {
                tokenizeCreditCardWithBillingAddress();
            }

3. in the same file you'll find the method tokenizeCreditCard, add another method just like it, underneath or above however you like,

protected void tokenizeCreditCardWithBillingAddress() {
        Intent intent = getIntent();
        Card card = new Card();
        card.setExpirationMonth(intent.getStringExtra("expirationMonth"));
        card.setExpirationYear(intent.getStringExtra("expirationYear"));
        card.setCvv(intent.getStringExtra("cvv"));
        card.setCardholderName(intent.getStringExtra("cardholderName"));
        card.setNumber(intent.getStringExtra("cardNumber"));
        card.setPostalCode(intent.getStringExtra("postalCode"));
        card.setStreetAddress(intent.getStringExtra("streetAddress"));

        CardClient cardClient = new CardClient(braintreeClient);
        CardTokenizeCallback callback = (cardNonce, error) -> {
            if(cardNonce != null){
                onPaymentMethodNonceCreated(cardNonce);
            }
            if(error != null){
                onError(error);
            }
        };
        cardClient.tokenize(card, callback);
    }

4. Now go back a directory and in this file (flutter-braintree/android/src/main/java/com/example/flutter_braintree/FlutterBraintreePlugin.java) find the if else in the onMethodCall and add the following else if,

if (call.method.equals("tokenizeCreditCardWithBillingAddress")) {
      Intent intent = new Intent(activity, FlutterBraintreeCustom.class);
      intent.putExtra("type", "tokenizeCreditCard");
      intent.putExtra("authorization", (String) call.argument("authorization"));
      assert(call.argument("request") instanceof Map);
      Map request = (Map) call.argument("request");
      intent.putExtra("cardNumber", (String) request.get("cardNumber"));
      intent.putExtra("expirationMonth", (String) request.get("expirationMonth"));
      intent.putExtra("expirationYear", (String) request.get("expirationYear"));
      intent.putExtra("cvv", (String) request.get("cvv"));
      intent.putExtra("cardholderName", (String) request.get("cardholderName"));
      intent.putExtra("postalCode", (String) request.get("postalCode"));
      intent.putExtra("streetAddress", (String) request.get("streetAddress"));
      
      activity.startActivityForResult(intent, CUSTOM_ACTIVITY_REQUEST_CODE);
    }

5. Its done for Android (just use Braintree.tokenizeCreditCardWithBillingAddress(...))

/// FOR IOS

1. With IOS its easy, just add an else if in the file (flutter-braintree/ios/Classes/FlutterBraintreeCustomPlugin.swift).
2. Find the condition where it says "else if call.method == "tokenizeCreditCard" {",

right where this condition ends, add another else if,

else if call.method == "tokenizeCreditCardWithBillingAddress" {
            let cardClient = BTCardClient(apiClient: client!)

            guard let cardRequestInfo = dict(for: "request", in: call) else {return}

            let card = BTCard()
            card.number = cardRequestInfo["cardNumber"] as? String
            card.expirationMonth = cardRequestInfo["expirationMonth"] as? String
            card.expirationYear = cardRequestInfo["expirationYear"] as? String
            card.cvv = cardRequestInfo["cvv"] as? String
            card.postalCode = cardRequestInfo["postalCode"] as? String
            card.streetAddress = cardRequestInfo["streetAddress"] as? String

            cardClient.tokenizeCard(card) { (nonce, error) in
                self.handleResult(nonce: nonce, error: error, flutterResult: result)
                self.isHandlingResult = false
            }
        }

3. And its done

P.S. I don't know if this was the right way to do it or not but I just did what worked for me and it may or may not work for you.