如何设置URLSession Swift 3

Question

嘿，Swift 3有问题。我有以下代码：

public var urlSession : URLSession?
self.urlSession = URLSession(configuration: URLSessionConfiguration.default,
            delegate: self,
            delegateQueue: OperationQueue.main)

我收到以下错误消息："URLSession produces ()，而不是预期的上下文结果类型URLSession?"

我在这里做错什么了？

Answer 1

我问你的URLSession函数？

可能您的代码中的问题是：

func URLSession(session: URLSession, dataTask: URLSessionDataTask, didReceive data: Data) {
    self.data.append(data as Data)  
}

以及：

func URLSession(session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {
    if error != nil {
        print("Failed to download data")
    }else {
        print("Data downloaded")
        self.parseJSON()
    }
}

因此，与其：

func URLSession(session:

这样做：

func urlSession(_ session:

期末考试就像：

func urlSession(_ session: URLSession, dataTask: URLSessionDataTask, didReceive data: Data) {
    self.data.append(data as Data)  
}

func urlSession(_ session: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {
    if error != nil {
        print("Failed to download data")
    }else {
        print("Data downloaded")
        self.parseJSON()
    }
}

如果这不是你的问题的解决方案，请用更多的代码更新你的问题。✌️

Answer 2

Swift 3.0

let urlString=  "URL String"
let myUrl = URL(string: urlString);
let request = NSMutableURLRequest(url:myUrl!);
request.httpMethod = "GET";

let task = URLSession.shared().dataTask(with: request as URLRequest) {
    data, response, error in

    if error != nil {
        print(error!.localizedDescription)
        DispatchQueue.main.sync(execute: {
            AWLoader.hide()
        })
        return
    }

    do {

let json = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as? NSArray 

 if let parseJSON = json{
 print(parseJSON)
 } else {
 AWLoader.hide()
 }
catch{
        AWLoader.hide()
        print(error)
    }
}
task.resume()