SwiftUI - Stripe STPPaymentContext view not updating with STPPaymentConfiguration - swift

Question

So I have implemented Stripe into my project. Everything works as intended. However, I do wish to use some of the configuration options available to use. For instance, setting the default payment country to "UK". However, this causes my app to crash as it finds a nil value. I am also trying to use some of the other settings like so:
self.config.requiredBillingAddressFields = .full
self.config.appleMerchantIdentifier = "dummy-merchant-id"
self.config.cardScanningEnabled = true
self.config.applePayEnabled = true
The only thing within the view that I can seem to change is the .requiredBillingAddressFields. Everything else does not seem to register. My code is as followed, I've ripped out what is not related to Stripe for clarity:
struct CheckOutView: View {
#StateObject var paymentContextDelegate: PaymentContextDelegate
let config = STPPaymentConfiguration()
#State private var paymentContext: STPPaymentContext!
var body: some View {
HStack {
BorderedButton(text: "Pay Now") {
self.paymentContext.requestPayment()
}
Spacer()
}
HStack {
BorderedButton(text: paymentContextDelegate.paymentMethodButtonTitle) {
self.paymentContext.presentPaymentOptionsViewController()
}
Spacer()
}
.onAppear() {
DispatchQueue.main.async {
self.paymentContextConfiguration()
}
}
}
//MARK: - Configuration
func paymentContextConfiguration() {
self.config.requiredBillingAddressFields = .full
self.config.appleMerchantIdentifier = "dummy-merchant-id"
self.config.cardScanningEnabled = true
self.config.applePayEnabled = true
self.config.verifyPrefilledShippingAddress = true
self.config.canDeletePaymentOptions = true
self.paymentContext = STPPaymentContext(customerContext: customerContext, configuration: self.config, theme: .defaultTheme)
self.paymentContext.delegate = self.paymentContextDelegate
let keyWindow = UIApplication.shared.connectedScenes
.filter({$0.activationState == .foregroundActive})
.map({$0 as? UIWindowScene})
.compactMap({$0})
.first?.windows
.filter({$0.isKeyWindow}).last
self.paymentContext.hostViewController = keyWindow?.rootViewController
}
}
Any help would be appreciated! Thank you.

Answer 1

This is more of a guess, but perhaps the config options are applying, but it's just that the other requirements for the features they enable are not met? How exactly do you determine that everything else except billing address does not register?
For example applePayEnabled will only result in the Apple Pay option appearing if the device itself supports Apple Pay(on a physical device with a real card in your wallet it would work(but you must have a real Apple Merchant ID), on simulators it can be patchy).
For cardScanningEnabled maybe you don't have the entitlement enabled in your app? https://github.com/stripe/stripe-ios#card-scanning-beta
A simple way to check if the config applies is maybe to set requiredShippingAddressFields since it's self-contained and very visual.