Loading image to Image Cell from URL

问题

I'm learning to code in swift. I'm trying to load an image onto an image cell located within an image well.I'm using the following code

import Cocoa

class ViewController: NSViewController {

    @IBOutlet weak var well: NSImageCell!
    @IBAction func clickme(_ sender: Any) {
    let image = NSImage(byReferencing:NSURL(string: "http://imgsv.imaging.nikon.com/lineup/lens/zoom/normalzoom/af-s_dx_18-140mmf_35-56g_ed_vr/img/sample/sample1_l.jpg")! as URL)
        well.image=image;
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }

    override var representedObject: Any? {
        didSet {
        // Update the view, if already loaded.
        }
    }


}

No exception is thrown nor any image is loaded. What I'm I doing wrong?

回答1:

Try this.

Simple Way.

let url = NSURL(string:"your url")
        let imagedata = NSData.init(contentsOf: url! as URL)

        if imagedata != nil {
            imageView.image = UIImage(data:imagedata! as Data)
        }

Create extension.

   extension UIImageView{

        func setImageFromURl(ImageUrl: String){

            if let url = NSURL(string: ImageUrl) {
                if let imagedata = NSData(contentsOf: url as URL) {
                    self.image = UIImage(data: imagedata as Data)
                }
            }
        }
    }

 //Use this extension

    imageView.setImageFromURl(ImageUrl: "your url")

Use AFNetworking.

//without placeholder
    imageView.setImageWith(URL.init(string: "your url")!)
//with placeholder
    imageView.setImageWith(URL.init(string: "your url")!, placeholderImage: UIImage.init(named: "placeholder.png"))

Use SDWebImage.

imageView.sd_setImage(with: URL(string: "your url"), placeholderImage: UIImage(named: "placeholder.png"))

来源：https://stackoverflow.com/questions/46176409/loading-image-to-image-cell-from-url

标签

swift

macos

cocoa

nsimage