在我的flutter项目中，我试图使用flutter_stripe包集成Stripe支付。
我已经初始化和配置正确.但当试图提出paymentSheet什么也没有显示或发生.也没有错误的原因.因为它停留在行，并没有运行代码后，.我也尝试了插件简单的示例代码，以及但不工作，因为我想要.任何帮助将不胜感激.
main.dart

Stripe.publishableKey = StripeService.publishableKey;
  Stripe.merchantIdentifier = 'merchant.flutter.stripe.test';
  Stripe.urlScheme = 'flutterstripe';
  await Stripe.instance.applySettings();
  runApp(const MyApp());
}

字符串
service.dart

Future<void> initPaymentSheet() async {
try {
  // 1. create payment intent on the server
  final paymentSheetData = await createPaymentIntent("1200", 'usd');
  print("payment intent created");

  // create some billingdetails
  final billingDetails = BillingDetails(
    email: '[email protected]',
    phone: '+48888000888',
    address: Address(
      city: 'Houston',
      country: 'US',
      line1: '1459  Circle Drive',
      line2: '',
      state: 'Texas',
      postalCode: '77063',
    ),
  ); // mocked data for tests

 // 2. initialize the payment sheet
  await Stripe.instance.initPaymentSheet(
      paymentSheetParameters: SetupPaymentSheetParameters(
    applePay: true,
    googlePay: true,
    style: ThemeMode.dark,
    testEnv: true,
    merchantCountryCode: 'US',
    merchantDisplayName: 'Prospects',
    customerId: paymentSheetData!['customer'],
    paymentIntentClientSecret: paymentSheetData['paymentIntent'],
    customerEphemeralKeySecret: paymentSheetData['ephemeralKey'],
  ));
  print("payment sheet created");

  await Stripe.instance.presentPaymentSheet();

  print("after payment sheet presented");
} on Exception catch (e) {
  if (e is StripeException) {
    print("Error from Stripe: ${e.error.localizedMessage}");
  } else {
    print("Unforeseen error: ${e}");
  }
  rethrow;
}

型
}
输出
I/flutter（14987）：创建付款意向
I/flutter（14987）：已创建付款单