Question

我是iOS编程的新手，我只停留在这小部分。

我基本上是想在我的iOS应用程序中使用Stripe。用户输入他们想要支付的金额，按NEXT，然后输入卡的详细信息。到目前为止，所有这些都进行得很好-我可以显示AddCardViewController并输入其卡的详细信息。

该代码可以一路验证卡片令牌并接受付款；很棒，但是接下来的问题是AddCardViewController之后不会消失。

当我在演示中进行尝试时，它工作得很好，但是在我的应用程序上却根本不起作用！该应用程序只是卡在AddCardViewController上。按下取消不会执行任何操作，没有显示消息，并且再次提交卡的详细信息只会使用户多付账单。

我在做什么错了？

有关更多信息，这是我的代码：

StripeClient.shared.sendPostRequest(with: token, amount: amount, description: description) { result in
        switch result {
        // 1
        case .success:
            completion(nil)

            let alertController = UIAlertController(title: "Congrats",
                                                    message: "Your payment was successful!",
                                                    preferredStyle: .alert)
            let alertAction = UIAlertAction(title: "OK", style: .default, handler: { _ in
                self.navigationController?.popViewController(animated: true)
            })
            alertController.addAction(alertAction)
            self.present(alertController, animated: true)

            self.view.makeToast("Your payment was successful! We will be sending you a receipt to your email shortly.")
        // 2
        case .failure(let error):
            completion(error)
        }
    }

我发出了自定义帖子请求，因为我无法让演示程序提供该请求，但我可以100％肯定地说代码成功输入了case .success-我已经对此进行了测试。但是以防万一，这是我的.sendPostRequest方法：

func sendPostRequest(with token: STPToken, amount: Double, description: String, completion: @escaping (Result) -> Void) {
    //declare parameter as a dictionary which contains string as key and value combination. considering inputs are valid

    let params: [String: Any] = [
        "stripeToken": token.tokenId,
        "amount": amount,
        "currency": Constants.defaultCurrency,
        "description": description
    ]

    //create the url with URL
    let url = URL(string: "<this-is-my-url.com>")! //change the url

    //create the session object
    let session = URLSession.shared

    //now create the URLRequest object using the url object
    var request = URLRequest(url: url)
    request.httpMethod = "POST" //set http method as POST

    do {
        request.httpBody = try JSONSerialization.data(withJSONObject: params, options: .prettyPrinted) // pass dictionary to nsdata object and set it as request body
    } catch let error {
        print(error.localizedDescription)
    }

    request.addValue("application/json", forHTTPHeaderField: "Content-Type")
    request.addValue("application/json", forHTTPHeaderField: "Accept")

    //create dataTask using the session object to send data to the server
    let task = session.dataTask(with: request as URLRequest, completionHandler: { data, response, error in

        guard error == nil else {
            return
        }

        guard let data = data else {
            return
        }

        do {
            //create json object from data
            //print(data)
            if let json = try JSONSerialization.jsonObject(with: data, options: .mutableContainers) as? [String: Any] {
                //print(json)
                // handle json...
                //print(json["response"]!)

                if let responseString = try json["response"] as? String {
                    if responseString == "SUCCESS" {
                        completion(Result.success)
                    } else {
                        completion(Result.failure(IntParsingError.overflow))
                    }
                }
            }
        } catch let error {
            print(error.localizedDescription)
        }
    })
    task.resume()
}

我真的非常非常感谢您的帮助！

Answer 1

1-您需要

DispatchQueue.main.async {
     completion(Result.success)
}

session.dataTask(with:在后台线程中运行

2-为此运行

self.navigationController?.popViewController(animated: true)

验证vc是否嵌入在导航中，并且为您提供了上一个vc的push而非present函数

编辑：

当你出席时做

self.dismiss(animated: true, completion: nil)

AddCardViewController完成后不会消失

1 个答案: