应用内购买appStoreReceiptURL为空

Question

2个月前我在我的应用程序中进行了自动更新购买，一切都很好用沙箱。但现在我无法通过NSBundle.mainBundle（）获得收据.appStoreReceiptURL此路径不会退出。怎么会这样？ 2个月前收到了收据（或更少）。请帮帮我！这就是我收据的方式（swift 2） -

static func receipt() -> String {
    print("RECEPT URL", NSBundle.mainBundle().appStoreReceiptURL)

    guard let receiptUrl = NSBundle.mainBundle().appStoreReceiptURL, let receiptPath = receiptUrl.path else { return "" }
    let fileManager = NSFileManager.defaultManager()
    if fileManager.fileExistsAtPath(receiptPath){
        var receiptData: NSData?
        do {
            receiptData = try NSData(contentsOfURL: receiptUrl, options: NSDataReadingOptions.DataReadingMappedAlways)
        }
        catch {
            print("ERROR: " )
        }

        //guard let receiptData = NSData(contentsOfURL: receiptUrl) else { return "" }
        if let receiptString = receiptData?.base64EncodedStringWithOptions(NSDataBase64EncodingOptions(rawValue: 0)) {
            print("REC", receipt, receiptString)

            return receiptString
        }
    }
    return ""
}

Answer 1

根据文档，appStoreReceiptURL可能会或可能不会指向收据的文件。您可以使用SKReceiptRefreshRequest请求收据刷新。