銀行認証なしのカード支払い

import UIKit
import StripePaymentsUI

@main
class AppDelegate: UIResponder, UIApplicationDelegate {

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        StripeAPI.defaultPublishableKey = 
"pk_test_TYooMQauvdEDq54NiTphI7jx"
        // do any other necessary launch configuration
        return true
    }
}

import UIKit
import StripePaymentsUI

class CheckoutViewController: UIViewController {

    lazy var cardTextField: STPPaymentCardTextField = {
        let cardTextField = STPPaymentCardTextField()
        return cardTextField
    }()
    lazy var payButton: UIButton = {
        let button = UIButton(type: .custom)
        button.layer.cornerRadius = 5
        button.backgroundColor = .systemBlue
        button.titleLabel?.font = UIFont.systemFont(ofSize: 22)
        button.setTitle("Pay", for: .normal)
        button.addTarget(self, action: #selector(pay), for: .touchUpInside)
        return button
    }()

    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = .white
        let stackView = UIStackView(arrangedSubviews: [cardTextField, payButton])
        stackView.axis = .vertical
        stackView.spacing = 20
        stackView.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(stackView)
        NSLayoutConstraint.activate([
            stackView.leftAnchor.constraint(equalToSystemSpacingAfter: view.leftAnchor, multiplier: 2),
            view.rightAnchor.constraint(equalToSystemSpacingAfter: stackView.rightAnchor, multiplier: 2),
            stackView.topAnchor.constraint(equalToSystemSpacingBelow: view.safeAreaLayoutGuide.topAnchor, multiplier: 2),
        ])
    }

    @objc
    func pay() {
        // ...
    }
}

func pay() {
    // Create a PaymentMethod with the card text field's card details
    STPAPIClient.shared.createPaymentMethod(with: cardTextField.paymentMethodParams) { (paymentMethod, error) in
        guard let paymentMethod = paymentMethod else {
            // Display the error to the customer
            return
        }
        let paymentMethodID = paymentMethod.stripeId
        // Send paymentMethodID to your server for the next step
    }
}

# Check the status of the PaymentIntent to make sure it succeeded

curl https://api.stripe.com/v1/payment_intents \
  -u 
sk_test_4eC39HqLyjWDarjtT1zdp7dc: \
  -d amount=1099 \
  -d currency=usd \

# A PaymentIntent can be confirmed some time after creation,
# but here we want to confirm (collect payment) immediately.
  -d confirm=true \
  -d payment_method="{{PAYMENT_METHOD_ID}}" \

# If the payment requires any follow-up actions from the
# customer, like two-factor authentication, Stripe will error
# and you will need to prompt them for a new payment method.
  -d error_on_requires_action=true