如何使用 SKReceiptRefreshRequest 在 iOS 的 StoreKit 中恢复购买？

Question

从堆栈溢出上的所有其他答案中，我还没有找到这个特定问题的答案。

我正在使用 SKReceiptRefreshRequest 恢复购买。我正在使用沙盒帐户。我有以下代码：

let request = SKReceiptRefreshRequest()  

request.delegate = self  

request.start()  

当结果是调用 SKRequestDelegate 协议的 requestDidFinish 时。我返回的请求的receiptProperties 属性为零。我该如何解释？文档 (Refreshing the App Receipt) 说要检查收据，但似乎没有什么要检查的。

这是我的代码，当我假设收到带有 nilreceiptProperties 的请求意味着我收到了回执。

extension SettingsTableViewController: SKRequestDelegate {

    func requestDidFinish(_ request: SKRequest) {

        print("requestDidFinish")

        print("request=", request)

        if let receiptRefreshRequest = request as? SKReceiptRefreshRequest {

            print("receipt properties=", receiptRefreshRequest.receiptProperties as Any)

        }

        if iCloudAvailable() {

            ubiquitousKeyValueStore.set(true, forKey: UbiquitousKeys.iMessageExtension)

            let alertMessage = "iMessage Saved Messages has been restored."

            let alert = UIAlertController(title: nil, message: alertMessage, preferredStyle: .alert)

            let actionOK = UIAlertAction(title: "OK", style: .cancel, handler: nil)

            alert.addAction(actionOK)

            present(alert, animated: true, completion: nil)

        }

    }

    func request(_ request: SKRequest, didFailWithError error: Error) {

        print("requst(_:didFailWithError:)")

        if let receiptRefreshRequest = request as? SKReceiptRefreshRequest {

            print("receipt properties=", receiptRefreshRequest.receiptProperties as Any)

        } else {

            print("request=", request)
        }

        print("error=", error)

        let alertMessage = "There are no purchases to restore."

        let alert = UIAlertController(title: nil, message: alertMessage, preferredStyle: .alert)

        let actionOK = UIAlertAction(title: "OK", style: .cancel, handler: nil)

        alert.addAction(actionOK)

        present(alert, animated: true, completion: nil)

    }

}

Answer 1

我发现这个网页有答案。 Apple 的文档没有在需要的地方显示这一点。

"Restoring non-consumable IAPs in iOS" at upbeat.it

func validateReceipt() {
    let recURL = Bundle.main.appStoreReceiptURL!
    let contents = NSData(contentsOf: recURL)
    let receiptData = contents!.base64EncodedString(options: NSData.Base64EncodingOptions(rawValue: 0))
    print(receiptData)
    let requestContents = ["receipt-data" : receiptData]
    print(requestContents)
    let requestData = try? JSONSerialization.data(withJSONObject: requestContents, options: [])
    print(requestData)
    let serverURL = "https://sandbox.itunes.apple.com/verifyReceipt" // TODO:change this in production with https://buy.itunes.apple.com/verifyReceipt
    let url = NSURL(string: serverURL)
    let request = NSMutableURLRequest(url: url! as URL)
    request.httpMethod = "POST"
    request.httpBody = requestData
    let task = URLSession.shared.dataTask(with: request as URLRequest, completionHandler: {data, response, error -> Void in
        guard let data = data, error == nil else {
            self.notifyReceiptResult(false)
            return
        }
        do {
            let json = try JSONSerialization.jsonObject(with: data, options:[]) as? [String: Any]
            if let receipt = json?["receipt"] as? [String: AnyObject],
                let inApp = receipt["in_app"] as? [AnyObject] {
                print(inApp)
                if (inApp.count > 0) {
                    self.notifyReceiptResult(true)
                } else {
                    self.notifyReceiptResult(false)
                }
            }
        }
        catch let error as NSError {
            print(error)
            self.notifyReceiptResult(false)
        }
    })
    task.resume()
}