在 iOS 上使用 Stripe 驗證信用卡

Question

我開始將 Stripe 集成到我正在制作的 iOS 應用程序中，我已經到了需要驗證卡信息的地步。

我試過：

#pragma mark - My Actions

- (IBAction)buyButtonTapped:(id)sender {

  //Populate STPCard property
  self.stripeCard = [[STPCard alloc]init];
  self.stripeCard.name = self.txtFieldCardHolderName.text;
  self.stripeCard.number = self.txtFieldCardNumber.text;
  self.stripeCard.cvc = self.txtFieldCardCvc.text;
  self.stripeCard.expMonth = [self.selectedMonth integerValue];
  self.stripeCard.expYear = [self.selectedYear integerValue];

  //Validate Customer info
  if ([self validateCustomerInfo]) {
    [self performStripeOperation];
  }

} 

-(BOOL)validateCustomerInfo{

  //Create Alert

  UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Please, try again!"
                                                                 message:@"Please, enter all required information."
                                                          preferredStyle:UIAlertControllerStyleAlert];

  UIAlertAction *action = [UIAlertAction actionWithTitle:@"OK"
                                                   style:UIAlertActionStyleDefault
                                                 handler:^(UIAlertAction * _Nonnull action) {

                                                   //Add some action

                                                 }];

  //Add its action
  [alert addAction:action];


  //Validate text fields
  if (self.txtFieldCardHolderName.text == 0 || self.txtFieldCardNumber.text == 0 || self.txtFieldCardExpDate.text == 0 || self.txtFieldCardCvc.text == 0) {

    [self presentViewController:alert animated:true completion:nil];
    return NO;
  }

  //Validate card number, CVC, expMonth, expYear
  NSError *error = nil;

  [self.stripeCard validateCardReturningError:&error];

  //3
  if (error) {
    alert.message = [error localizedDescription];
    [self presentViewController:alert animated:true completion:nil];
    return NO;
  }

  return YES;

}

我在 StackOverflow 上檢查了其他幾個問題，似乎每個人都使用validateCardReturningError方法，但 iOS9 不推薦使用它。

Xcode 抱怨並要求我改用 STPCardValidator。

任何人都可以幫助我使用 STPCardValidator 進行卡驗證的一個示例嗎？

我注意到我也可以使用以下 Class 方法：

[STPCardValidator validationStateForNumber:self.txtFieldCardNumber.text validatingCardBrand:true];

但我不確定如何在我的 validateCustomerInfo 方法中使用它。

Answer 1

- (IBAction)buyButtonTapped:(id)sender{

    param = [[STPCardParams alloc]init];
    param.number = txt_cc_no.text;
    param.cvc = txt_cc_cvvno.text;
    param.expMonth =[self.selectedMonth integerValue];
    param.expYear = [self.selectedYear integerValue];


   if ([self validateCustomerInfo]) {
       [self performStripeOperation];
   }

}
- (BOOL)validateCustomerInfo {

    //2. Validate card number, CVC, expMonth, expYear
    [STPCardValidator validationStateForExpirationMonth:[self.selectedMonth stringValue]];
    [STPCardValidator validationStateForExpirationYear:[self.selectedYear stringValue] inMonth:[self.selectedMonth stringValue]];
    if ([txt_cc_type.text isEqualToString:@"visa"]) {
        [STPCardValidator validationStateForCVC:txt_cc_cvvno.text cardBrand:STPCardBrandVisa];
        [STPCardValidator validationStateForNumber:txt_cc_no.text validatingCardBrand:STPCardBrandVisa];
    }
    else if ([txt_cc_type.text isEqualToString:@"MasterCard"]){
        [STPCardValidator validationStateForCVC:txt_cc_cvvno.text cardBrand:STPCardBrandMasterCard];
        [STPCardValidator validationStateForNumber:txt_cc_no.text validatingCardBrand:STPCardBrandMasterCard];
    }
    else if ([txt_cc_type.text isEqualToString:@"American Express"]){

        [STPCardValidator validationStateForCVC:txt_cc_cvvno.text cardBrand:STPCardBrandAmex];
        [STPCardValidator validationStateForNumber:txt_cc_no.text validatingCardBrand:STPCardBrandAmex];
    }
    else if ([txt_cc_type.text isEqualToString:@"Discover"]){
        [STPCardValidator validationStateForCVC:txt_cc_cvvno.text cardBrand:STPCardBrandDiscover];
        [STPCardValidator validationStateForNumber:txt_cc_no.text validatingCardBrand:STPCardBrandDiscover];
    }
    else if ([txt_cc_type.text isEqualToString:@"Diners Club"]){
        [STPCardValidator validationStateForCVC:txt_cc_cvvno.text cardBrand:STPCardBrandDinersClub];
        [STPCardValidator validationStateForNumber:txt_cc_no.text validatingCardBrand:STPCardBrandDinersClub];
    }
    else if ([txt_cc_type.text isEqualToString:@"JCB"]){
        [STPCardValidator validationStateForCVC:txt_cc_cvvno.text cardBrand:STPCardBrandJCB];
        [STPCardValidator validationStateForNumber:txt_cc_no.text validatingCardBrand:STPCardBrandJCB];
    }
    else if ([txt_cc_type.text isEqualToString:@"Unknown"]){
        [STPCardValidator validationStateForCVC:txt_cc_cvvno.text cardBrand:STPCardBrandUnknown];
        [STPCardValidator validationStateForNumber:txt_cc_no.text validatingCardBrand:STPCardBrandUnknown];
    }


    return YES;
}
- (void)performStripeOperation {
    [[STPAPIClient sharedClient] createTokenWithCard:param
                                          completion:^(STPToken *token, NSError *error) {
                                              if (error) {
                                                  //                                           [self handleError:error];
                                                  NSLog(@"ERRRRR = %@",error);
                                                  UIAlertView * alert = [[UIAlertView alloc] initWithTitle:@"Please try again"
                                                                                                   message:[NSString stringWithFormat:@"%@",error.localizedDescription]
                                                                                                  delegate:nil
                                                                                         cancelButtonTitle:@"OK"
                                                                                         otherButtonTitles:nil];
                                                  [alert show];
                                              } else {

                                                 //when credit card details is correct code here
                                              }
                                          }];
}

Answer 2

斯威夫特 5.0+

不要忘記import Stripe

func isCardDetailValid(cardNumber : String, month : UInt, year : UInt, cvv : String) -> Bool {
    let params = STPCardParams()
    params.number = cardNumber
    params.expMonth = month
    params.expYear = year
    params.cvc = cvv
    if STPCardValidator.validationState(forCard: params) == .valid {
        return true
    } else {
        return false
    }
}

Answer 3

Femina 答案的 Swift 2.1 版本。 注意：validateCardType() 是一個正則表達式函數，如果你也想要它，你可以在這里找到它如何根據號碼檢測信用卡類型？

func validateCustomerInfo() -> Bool {
    // Validate card number, CVC, expMonth, expYear
    STPCardValidator.validationStateForExpirationMonth(self.expMonth.text!)
    STPCardValidator.validationStateForExpirationYear(self.expYear.text!, inMonth: self.expMonth.text!)

    if (self.validateCardType(creditCardField.text!) == "Visa") {
        STPCardValidator.validationStateForCVC(self.securityField.text!, cardBrand: STPCardBrand.Visa)
        STPCardValidator.validationStateForNumber(self.creditCardField.text!, validatingCardBrand: true)
    }
    else if (self.validateCardType(creditCardField.text!) == "MasterCard") {
        STPCardValidator.validationStateForCVC(self.securityField.text!, cardBrand: STPCardBrand.MasterCard)
        STPCardValidator.validationStateForNumber(self.creditCardField.text!, validatingCardBrand: true)
    }
    else if (self.validateCardType(creditCardField.text!) == "American Express") {
        STPCardValidator.validationStateForCVC(self.securityField.text!, cardBrand: STPCardBrand.Amex)
        STPCardValidator.validationStateForNumber(self.creditCardField.text!, validatingCardBrand: true)
    }
    else if (self.validateCardType(creditCardField.text!) == "Discover") {
        STPCardValidator.validationStateForCVC(self.securityField.text!, cardBrand: STPCardBrand.Discover)
        STPCardValidator.validationStateForNumber(self.creditCardField.text!, validatingCardBrand: true)
    }
    else if (self.validateCardType(creditCardField.text!) == "Diners Club") {
        STPCardValidator.validationStateForCVC(self.securityField.text!, cardBrand: STPCardBrand.DinersClub)
        STPCardValidator.validationStateForNumber(self.creditCardField.text!, validatingCardBrand: true)
    }
    else if (self.validateCardType(creditCardField.text!) == "JCB") {
        STPCardValidator.validationStateForCVC(self.securityField.text!, cardBrand: STPCardBrand.JCB)
        STPCardValidator.validationStateForNumber(self.creditCardField.text!, validatingCardBrand: true)
    }
    else if (self.validateCardType(creditCardField.text!) == "Unknown") {
        STPCardValidator.validationStateForCVC(self.securityField.text!, cardBrand: STPCardBrand.Unknown)
        STPCardValidator.validationStateForNumber(self.creditCardField.text!, validatingCardBrand: true)
    }

    return true
}

Answer 4

執行此操作的最簡單方法，而不是進行所有計算。

您可以使用STPCardValidator的validationStateForCard方法，該方法將 STPCardParams 實例作為參數。

- (IBAction)buyButtonTapped:(id)sender{

    param = [[STPCardParams alloc]init];
    param.number = txt_cc_no.text;
    param.cvc = txt_cc_cvvno.text;
    param.expMonth =[self.selectedMonth integerValue];
    param.expYear = [self.selectedYear integerValue];


   if ([self validateCustomerInfo]) {
       [self performStripeOperation];
   }

}

func validateCustomerInfo() -> Bool {

    // Validate card number, CVC, expMonth, expYear
    return STPCardValidator.validationStateForCard(param) == .Valid
}

Answer 5

快速 3

    // Validate all params at once
    let cardSate = STPCardValidator.validationState(forCard: cardParams)
    // Validate card number, CVC, expMonth, expYear one by one
    let numberState = STPCardValidator.validationState(forNumber: cardParams.number, validatingCardBrand: true)
    let cvcState = STPCardValidator.validationState(forCVC: cardParams.cvc ?? "", cardBrand: STPCardValidator.brand(forNumber: cardParams.number ?? ""))
    let expMonthState = STPCardValidator.validationState(forExpirationMonth: String(cardParams.expMonth ?? 0))
    let expYearState = STPCardValidator.validationState(forExpirationYear: String(cardParams.expYear ?? 0), inMonth: String(cardParams.expMonth ?? 0))

Answer 6

這是@iOSArchitect.com 完整且更正確的 Swift 答案

func paymentCardTextFieldDidChange(_ textField: STPPaymentCardTextField) {
    let isValid = isValidCard(cardNumber: textField.cardNumber, month: textField.expirationMonth, year: textField.expirationYear, cvv: textField.cvc)
}

func isValidCard(cardNumber: String?, month: UInt, year: UInt, cvv: String?) -> Bool {
    let params = STPCardParams()
    params.number = cardNumber
    params.expMonth = month
    params.expYear = year
    params.cvc = cvv
    if STPCardValidator.validationState(forCard: params) == .valid {
        return true
    } else {
        return false
    }
}