SwiftUI确认Stripe支付（iOS 16）

Question

我正在使用 Stripe API 接受 SwiftUI 中的卡支付。

我设法使用包装在UIViewRepresentable中的STPPaymentCardTextField成功付款，并使用提供的工作表修饰符.paymentConfirmationSheet(....)确认它。

当我在 iOS 16 中采用新的NavigationStack时出现了问题。如果.paymentConfirmationSheet(....)出现在新的NavigationStack中，它似乎无法正常工作。

有没有其他方式可以确认SwiftUI刷卡付款？ 我怎样才能解决这个问题？

如果我切换回NavigationView它会按预期工作，但我想使用NavigationStack的新功能。

我的演示结帐视图及其视图模型

struct TestCheckout: View {
    
    @ObservedObject var model = TestCheckoutViewModel()
    
    var body: some View {
        
        VStack {
            CardField(paymentMethodParams: $model.paymentMethodParams)
            
            Button("Pay") {
                model.pay()
            }
            .buttonStyle(LargeButtonStyle())
            .paymentConfirmationSheet(isConfirmingPayment: $model.confirmPayment,
                                      paymentIntentParams: model.paymentIntentParams,
                                      onCompletion: model.onPaymentComplete)
        }
    }
}

class TestCheckoutViewModel: ObservableObject {
    @Published var paymentMethodParams: STPPaymentMethodParams?
    @Published var confirmPayment = false
    @Published var paymentIntentParams = STPPaymentIntentParams(clientSecret: "")
    
    func pay() {
        
        Task {
            
            do {
                // Create dummy payment intent
                let paymentIntent = try await StripeManager.shared.getPaymentIntent(orderId: "", amount: 1000)
                
                // Collect card details
                let paymentIntentParams = STPPaymentIntentParams(clientSecret: paymentIntent.secret)
                paymentIntentParams.paymentMethodParams = paymentMethodParams
                
                // Submit the payment
                DispatchQueue.main.async {
                    self.paymentIntentParams = paymentIntentParams
                    self.confirmPayment = true
                }
            } catch {
                print(error)
            }
        }
    }

    func onPaymentComplete(status: STPPaymentHandlerActionStatus, paymentIntent: STPPaymentIntent?, error: Error?) {
        print("Payment completed: \(error)")
    }
}

现在这不起作用

struct TestView: View {
    var body: some View {
        NavigationStack {
            NavigationLink("Checkout", value: "checkout")
                .navigationDestination(for: String.self) { string in
                    if string == "checkout" {
                        TestCheckout()
                    }
                }
        }
    }
}

但这确实

struct TestView: View {
    var body: some View {
        TestCheckout()
    }
}

我得到的错误是：

Error Domain=com.stripe.lib Code=50 "There was an unexpected error -- try again in a few seconds" UserInfo={NSLocalizedDescription=There was an unexpected error -- try again in a few seconds, com.stripe.lib:StripeErrorTypeKey=invalid_request_error, com.stripe.lib:StripeErrorCodeKey=payment_intent_unexpected_state, com.stripe.lib:ErrorMessageKey=Nemůžete potvrdit tento Platební záměr, protože v něm chybí platební metoda. Můžete buď aktualizovat Platební záměr s platební metodou a pak jej znovu potvrdit, nebo jej znovu potvrďte přímo s platební metodou.}

Answer 1

最后我发现了问题。

问题是@ObservedObject var model = TestCheckoutViewModel() 。 由于某种原因，它不再与@ObservedObject一起使用，它必须是@StateObject 。