Apple Pay 处理错误 资金不足或其他极端情况

Posted 2023-02-27

【中文标题】Apple Pay 处理错误 资金不足或其他极端情况

【英文标题】：Apple Pay handle errors Insufficient funds or other edge cases

【发布时间】：2021-01-07 14:41:17

【问题描述】：

我已经在我的 SwiftUI 应用中实现了 Apple Pay，它运行良好。但是我需要处理错误情况。假设用户没有足够的钱或发生其他事情。我需要这个，以便我可以取消购买并显示一条消息。

我还需要确认付款成功。

据我所知，PKPaymentAuthorizationControllerDelegate 方法都没有涵盖这些情况。

知道如何获得成功/错误确认吗？

func paymentAuthorizationController(_ controller: PKPaymentAuthorizationController, didAuthorizePayment payment: PKPayment, completion: @escaping (PKPaymentAuthorizationStatus) -> Void) 
    completion(.success)


func paymentAuthorizationControllerDidFinish(_ controller: PKPaymentAuthorizationController) 
    controller.dismiss(completion: nil)
    

【参考方案1】：

您必须为支付处理实施一些网络代码，并在出现错误等情况下使用它的响应。这里有一些您可以使用和改进的基本代码：

func paymentAuthorizationViewController(
    _ controller: PKPaymentAuthorizationViewController,
    didAuthorizePayment payment: PKPayment,
    handler completion: @escaping (PKPaymentAuthorizationResult) -> Void
) 
    // some network code you have to process for payment with payment token and all data what you need
    // it produce some NETWORK_RESPONSE yo can now use - it's up to you what format it will have

    if NETWORK_RESPONSE.success 
        let successResult = PKPaymentAuthorizationResult(status: .success, errors: nil)
        completion(successResult)
     else if let someErrors = NETWORK_RESPONSE.errors 
        let errorResult = responsePrepared(with: error)
        completion(errorResult)
     else 
        let defaultFailureResult = PKPaymentAuthorizationResult(status: .failure, errors: nil)
        completion(defaultFailureResult)
    

这里我使用上面的方法来产生一些错误对象，在我的例子中，我说提供的电话号码是错误的。

// it's up to you to produce here the error response object with error messages and pointing
func responsePrepared(with error: Error) -> PKPaymentAuthorizationResult
    let phoneNumberError = NSError.init(
        domain: PKPaymentErrorDomain,
        code: PKPaymentError.shippingContactInvalidError.rawValue,
        userInfo: [
            NSLocalizedDescriptionKey: message,
            PKPaymentErrorKey.contactFieldUserInfoKey.rawValue: PKContactField.phoneNumber
        ])

    return PKPaymentAuthorizationResult(status: .failure, errors: [phoneNumberError])