//

//  ViewController.swift

//  AsynWait

//

//  Created by shengjie on 2022/2/9.

//

import UIKit

class ViewController: UIViewController {

    @IBOutlet var imageView: UIImageView!

    override func viewDidLoad() {

        super.viewDidLoad()

        /// 老方法

        async {

            let data = await getImage()

            DispatchQueue.main.async {

                self.imageView.image = UIImage(data: data)

            }

        }

        /// 新方法

        Task(priority: .low) {

            let data = await getImage()

            DispatchQueue.main.async {

                self.imageView.image = UIImage(data: data)

            }

        }

        // Do any additional setup after loading the view.

    }

    func getImage() async -> Data {

        do {

            let (d, _) = try await URLSession.shared.data(for: URLRequest(url: URL(string: "https://raw.githubusercontent.com/1401788197/VideoSliderCrop/master/VideoPlayDemo/IMG_0950.jpg")!))

            return d

        } catch {

            return Data()

        }

    }

}