在加载场景之前调用Update（）

Question

我的游戏中有2个场景。主屏幕只有一个按钮，开始（单击该按钮可以将您带到另一个场景）以及一个带有游戏的场景。

由于某些原因，private func encyptCardDetails(data: Data){ guard let rsaKeytemp = String(bytes: data, encoding: String.Encoding.ascii) else{ print("No value for rsaKeyTemp") return } rsaKey = rsaKeytemp rsaKey = self.rsaKey.trimmingCharacters(in: CharacterSet.newlines) rsaKey = "-----BEGIN PUBLIC KEY-----\n\(self.rsaKey)\n-----END PUBLIC KEY-----\n" print("rsaKey :: ",rsaKey) let myRequestString = "amount=\(amount)&currency=\(getCurrency())" let ccTool = CCTool() var encVal = ccTool.encryptRSA(myRequestString, key: rsaKey) encVal = CFURLCreateStringByAddingPercentEscapes( nil, encVal! as CFString, nil, "!*'();:@&=+$,/?%#[]" as CFString, CFStringBuiltInEncodings.UTF8.rawValue) as String? let urlAsString = "https://secure.ccavenue.com/transaction/initTrans" let encryptedStr = String(format:"merchant_id=%@&order_id=%@&redirect_url=%@&cancel_url=%@&enc_val=%@&access_code=%@", CC_AVENUE_MERCHANTID, self.orderId, CC_AVENUE_REDIRECTURL, CC_AVENUE_REDIRECTURL, encVal!,CC_AVENUE_ACCESSKEY) print("access_code=\(CC_AVENUE_ACCESSKEY)") print("order_id=\(self.orderId)") let myRequestData = encryptedStr.data(using: String.Encoding.utf8) request = NSMutableURLRequest(url: URL(string: urlAsString)! as URL, cachePolicy: NSURLRequest.CachePolicy.reloadIgnoringCacheData, timeoutInterval: 30) request?.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "content-type") request?.setValue(urlAsString, forHTTPHeaderField: "Referer") request?.httpMethod = "POST" request?.httpBody = myRequestData print("\n\n\nwebview :: ",request?.url as Any) print("\n\n\nwebview :: ",request?.description as Any) print("\n\n\nwebview :: ",request?.httpBody?.description as Any) print("\n\n\nwebview :: ",request?.allHTTPHeaderFields! as Any) let session = URLSession(configuration: URLSessionConfiguration.default) print("session",session) session.dataTask(with: request! as URLRequest) { (data, response, error) -> Void in if let response = response as? HTTPURLResponse, 200...299 ~= response.statusCode{ guard let data = data else{ print("No value for data") return } // Create the delay here DispatchQueue.main.asyncAfter(deadline: .now()+1.0, execute: { self.viewWeb.loadRequest(self.request! as URLRequest) } print("data :: ",data) }else{ print("into else") showAlertWithTitleWithMessage(message: "Unable to load webpage currently, Please try again later.") } }.resume() } 在第二个场景中被调用，即使尚未加载。

Update()

Answer 1

您可以在此图中看到，Update被称为AFTER输入事件，因此这就是为什么再次调用它的原因（但应该再调用一次）。