Convert url to UIImage Swift3 [duplicate]

Question

I try to convert url to UIImage by using following code :

            let url = URL(string: "http://www.apple.com/euro/ios/ios8/a/generic/images/og.png")
            let sessionTask = URLSession.shared
            let request = URLRequest(url: url!)
            let task = sessionTask.dataTask(with: request, completionHandler: {(data: Data?, response: URLResponse?, error: Error?) -> Void in
                if (error == nil) {
                    let image: UIImage = UIImage(data: data!)!

                }

            })
            task.resume()

but it's not work for me, if-loop is not complied.

Check what is the value of error object

Midhun MP
– Midhun MP

2017-05-19 06:54:28 +00:00
Commented May 19, 2017 at 6:54 — Midhun MP
– Midhun MP, Commented May 19, 2017 at 6:54
stackoverflow.com/a/39813761/2526932

rv7284
– rv7284

2017-05-19 06:55:55 +00:00
Commented May 19, 2017 at 6:55 — rv7284
– rv7284, Commented May 19, 2017 at 6:55
This code is working in xcode 8.3

Jogendar Choudhary
– Jogendar Choudhary

2017-05-19 07:13:13 +00:00
Commented May 19, 2017 at 7:13 — Jogendar Choudhary
– Jogendar Choudhary, Commented May 19, 2017 at 7:13

Somoy Das Gupta · Accepted Answer · 2018-12-12 07:51:15Z

40

Try this

    let url = URL(string:"http://www.apple.com/euro/ios/ios8/a/generic/images/og.png")
    if let data = try? Data(contentsOf: url!)
    {
      let image: UIImage = UIImage(data: data)
    }

With Background thread

 DispatchQueue.global(qos: .background).async {
        do
         {
              let data = try Data.init(contentsOf: URL.init(string:"url")!)
               DispatchQueue.main.async {
                  let image: UIImage = UIImage(data: data)
               }
         }
        catch {
               // error
              }
 }

edited Dec 12, 2018 at 7:51

Somoy Das Gupta

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answered May 19, 2017 at 6:55

KKRocks

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6 Comments

user7778093 Over a year ago

Thank you very much. you can save my time. ><

KKRocks Over a year ago

Welcome.....@user7778093

user10497264 Over a year ago

What would be the benefit of doing teh conversion in a background thread?

KKRocks Over a year ago

@QTheGreat It will improve the performance of the application. Ex. Lagging of application during downloading the image.

Abishek Thangaraj Over a year ago

@KKRocks small changes in this code . Please add the optional for image let image: UIImage? = UIImage(data: data). This is for Swift 5

|

Ved Rauniyar · Accepted Answer · 2017-05-19 07:16:17Z

1

Try this by using SDWebImage

imageView.sd_setImage(with: URL(string: "http://www.apple.com/euro/ios/ios8/a/generic/images/og.png"), placeholderImage: UIImage(named: "placeholder.png"))

answered May 19, 2017 at 7:16

Ved Rauniyar

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