PaymentSheet not working with klarna for IOS

[sunmeetsingh2606]

Describe the bug
I am using Flutter: 3.0, IOS: 13.0, flutter_stripe: 9.5.0+1. When I am trying to open a PaymentSheet for klarna it is not working in IOS but it is properly working on android devices.

To Reproduce
Below is the sample code of my project

import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:flutter_stripe/flutter_stripe.dart';
import 'package:http/http.dart';

void main() {
  runApp(const MainApp());
}

class MainApp extends StatelessWidget {
  const MainApp({super.key});

  void onPayWithKlarna() async {
    Stripe.publishableKey = 'STRIPE PUBLIC KEY';
    Stripe.merchantIdentifier = 'merchant.flutter.stripe.test';
    await Stripe.instance.applySettings().catchError((e) {
      throw e.toString();
    });

    Request request =
        Request('POST', Uri.parse('https://api.stripe.com/v1/payment_intents'));

    request.bodyFields = {
      'payment_method_types[0]': 'klarna',
      'amount': '100',
      'currency': 'USD'
    };

    request.headers.addAll({'Authorization': 'Bearer STRIPE SECRET KEY'});

    request.send().then((value) {
      Response.fromStream(value).then((response) {
        dynamic body = jsonDecode(response.body);

        SetupPaymentSheetParameters setupPaymentSheetParameters =
            SetupPaymentSheetParameters(
                paymentIntentClientSecret: body['client_secret'],
                setupIntentClientSecret: body['client_secret'],
                merchantDisplayName: 'Newlime Tech',
                allowsDelayedPaymentMethods: true);

        Stripe.instance
            .initPaymentSheet(
                paymentSheetParameters: setupPaymentSheetParameters)
            .then((value) {
          Stripe.instance.presentPaymentSheet().then((value) {});
        });
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: OutlinedButton(
              onPressed: onPayWithKlarna, child: const Text('Pay With Klarna')),
        ),
      ),
    );
  }
}

Expected behavior
This code will also open a PaymentSheet for klarna in IOS but it isn't, not sure if I am missing something...

Any guidance would be really helpful, thanks :)

[remonh87]

yes you are correct I can reproduce this issue. I raised a ticket in Stripe stripe/stripe-react-native#1572

[remonh87]

ok I found the issue returnUrl is required in initpaymentSheet. For example:
returnURL: 'flutterstripe://redirect'

[sunmeetsingh2606]

Tried this returnURL: 'flutterstripe://redirect' but after successful payment it is not closing the payment web window as it usually close without returnURL.

Do you have any ideas for that ?