iOS9 sendSynchronousRequest 弃用

Question

Warning:'sendSynchronousRequest(_:returningResponse:)' was deprecated in iOS 9.0: Use [NSURLSession dataTaskWithRequest:completionHandler:] (see NSURLSession)

urlData = try NSURLConnection.sendSynchronousRequest(request, returningResponse:&response)

关于如何摆脱这个警告的任何想法？我刚刚从 Swift 1.2 升级到 Swift 2

更新:Fonix 被标记为我的最佳答案。如果您尝试添加 try 语句，我修改了他的答案如下:

urlData = try NSURLSession.dataTaskWithRequest(<#request: NSURLRequest#>, completionHandler: <#((NSData!, NSURLResponse!, NSError!) -> Void)?##(NSData!, NSURLResponse!, NSError!) -> Void#>)

Answer 1

像下面这样使用NSURLSession，

对于 objective-c

NSURLSession *session = [NSURLSession sharedSession];
[[session dataTaskWithURL:[NSURL URLWithString:londonWeatherUrl]
          completionHandler:^(NSData *data,
                              NSURLResponse *response,
                              NSError *error) {
            // handle response

  }] resume];

对于 Swift，

var request = NSMutableURLRequest(URL: NSURL(string: "YOUR URL"))
var session = NSURLSession.sharedSession()
request.HTTPMethod = "POST"

var params = ["username":"username", "password":"password"] as Dictionary<String, String>

var err: NSError?
request.HTTPBody = NSJSONSerialization.dataWithJSONObject(params, options: nil, error: &err)
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")

var task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
    println("Response: \(response)")})

task.resume()