import UIKit
class DownLocader: NSObject,NSURLSessionDownloadDelegate {
var session: NSURLSession?
override init() {
super.init()
let imageURL = NSURL(string: "https://httpbin.org/image/png")!
session = NSURLSession(configuration: NSURLSessionConfiguration.backgroundSessionConfigurationWithIdentifier("taask"),delegate: self,delegateQueue: nil)
session?.downloadTaskWithURL(imageURL).resume()
}
func URLSession(session: NSURLSession,downloadTask: NSURLSessionDownloadTask,didFinishDownloadingToURL location: NSURL){
print("下载完成")
{
print("正在下载 \(totalBytesWritten)/\(totalBytesExpectedToWrite)")
print("从 \(fileOffset) 处恢复下载，一共 \(expectedTotalBytes)")
}
class ViewController: UIViewController {
@IBOutlet weak var imageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view,typically from a nib.
//网络请求
var dow: DownLocader
dow = DownLocader()
if let url = NSURL(string: "https://httpbin.org/get"){
NSURLSession.sharedSession().dataTaskWithURL(url
,completionHandler: { (let data,let Response,let error) -> Void in
print(Response)
}).resume()
}
// NSURLSession.sharedSession().downloadTaskWithURL(imageURL) {Loca,response,error) -> Void in
//
//
// guard let url = Loca else { return }
// guard let imageData = NSData(contentsOfURL: url) else { return }
// guard let image = UIImage(data: imageData) else { return }
//
// }.resume()
NSURLSession.sharedSession().downloadTaskWithURL(imageURL) { (Loca,69)"> guard let url = Loca else { return }
guard let imageData = NSData(contentsOfURL: url) else { return }
guard let image = UIImage(data: imageData) else { return }
dispatch_async(dispatch_get_main_queue(),{ () -> Void in
self.imageView.image=image;
})
}.resume()
let uploadURL = NSURL(string: "https://httpbin.org/image/png")!
let request = NSURLRequest(URL: uploadURL)
let fileURL = NSURL(fileURLWithPath: "pathToUpload")
NSURLSession.sharedSession().uploadTaskWithRequest(request,fromFile: fileURL) { (let data,69)"> print("上传成功响应\(Response)")
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
