swift-以编程方式填充STPPaymentCardTextField

我正在开发一个应用程序，使用Stripe SDK和Card.io SDK。我想做的是用

Card.io

扫描的信用卡值填充

STPPaymentCardTextField

卡号、到期月份和年份。我试过：

var paymentField = STPPaymentCardTextField()

func userDidProvideCreditCardInfo(cardInfo: CardIOCreditCardInfo!, inPaymentViewController paymentViewController: CardIOPaymentViewController!) {
    var scanViewController: CardIOPaymentViewController = CardIOPaymentViewController(paymentDelegate: self)
    paymentField.cardNumber = cardInfo.cardNumber
    paymentField.expirationMonth = cardInfo.expiryMonth
    paymentField.expirationYear = cardInfo.expiryYear

    paymentViewController.dismissViewControllerAnimated(true, completion: nil)
}

---

我遇到一个错误，

无法为每个
paymentField
追加分配此表达式的结果。
你觉得我能用这个做什么？谢谢
 STPPaymentCardTextField字段是只读的，您只能从这些属性“获取”

STPPaymentCardTextField用于收集信用卡详细信息。在您的情况下，您已经在使用CardIOCreditCardInfo进行此操作。获得信用卡详细信息后，您可以将数据组装到STPCardParams对象中

收集了卡号、到期日和CVC后，将它们打包到STPCardParams对象中，并在STPAPIClient类上调用createTokenWithCard:方法

现在您的方法可能如下所示

func userDidProvideCreditCardInfo(cardInfo: CardIOCreditCardInfo!, inPaymentViewController paymentViewController: CardIOPaymentViewController!) {

        let card: STPCardParams = STPCardParams()
        card.number = info.cardNumber
        card.expMonth = info.expiryMonth
        card.expYear = info.expiryYear
        card.cvc = info.cvv

        STPAPIClient.sharedClient().createTokenWithCard(card, completion: {(result, error) -> Void in
            if error == nil {
                // Either save the card token with your customer data or charge them right away
                //createBackendChargeWithToken(token)
            }
            else {
                //handleError(error)
            }
        })
    }
    paymentViewController?.dismissViewControllerAnimated(true, completion: nil)
}

更新可能是您问题的正确答案

import Stripe
class PaymentCardEditorField: STPPaymentCardTextField {
    func setExistingCard(card: STPCardParams) {
        replaceField("numberField", withValue: card.number!)
        replaceField("expirationField", withValue: String(format: "%02d/%02d", card.expMonth, (card.expYear % 100)))
        replaceField("cvcField", withValue: card.cvc!)
    }

    func replaceField(memberName: String, withValue value: String) {
        let field = self.valueForKey(memberName) as! UITextField
        let delegate = self as! UITextFieldDelegate
        let len = field.text?.characters.count
        if delegate.textField?(field, shouldChangeCharactersInRange: NSMakeRange(0, len!), replacementString: value) ?? false {
        field.text = value
        }
    }
}

然后调用setExistingCard

func userDidProvideCreditCardInfo(cardInfo: CardIOCreditCardInfo!, inPaymentViewController paymentViewController: CardIOPaymentViewController!) {

    let card: STPCardParams = STPCardParams()
    card.number = info.cardNumber
    card.expMonth = info.expiryMonth
    card.expYear = info.expiryYear
    card.cvc = info.cvv
    paymentTextField.setExistingCard(card)
}

工作起来很有魅力

遵循此线程，将来可能会更新Stripe SDK以获得内置支持

我得到了一个更清晰的答案

您可以获得其他测试卡号码，如万事达卡、美国运通卡和Discover卡
是吗？我看不出有什么理由它不起作用。。。您到底有什么问题？我有一个错误，
无法为每个
paymentField
append分配此表达式的结果。
let cardParams = STPCardParams()
cardParams.number = "4242424242424242"
cardParams.expMonth = 07 // this data type is UInt and *not* Int
cardParams.expYear = 19 // this data type is UInt and *not* Int
cardParams.cvc = "123"

let paymentField = STPPaymentCardTextField()
paymentField.cardParams = cardParams //the paymentTextField will now show the cc #, exp, and cvc from above