Programmatically save an image to xcassets in Swift

Question

Say my app downloads an image, is it possible to save this to Images.xcassets programmatically, so that the image doesn't have to be downloaded again? Or would the best option be to keep retrieving it from the server?

score 5 · Answer 1 · answered Mar 10 '15 at 13:01

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You can't save to Images.xcassets, however you can save it to a file and access it with imageWithContentsOfFile:.

You could also use a caching library, like JGAFImageCache or Haneke.

answered Mar 10 '15 at 13:01

Lord Zsolt

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score 5 · Answer 2 · answered Mar 10 '15 at 13:09

5

you can't write to the bundle at all you need to save the data to you documents/caches folder inside your sandbox

answered Mar 10 '15 at 13:09

Daij-Djan

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score 5 · Accepted Answer · edited May 23 '17 at 12:08

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You can't save it to the images.assets. However you can save it to the document directory buy doing this. (Code from here - How to convert code objective c to Swift to save image?)

let nsDocumentDirectory = NSSearchPathDirectory.DocumentDirectory
let nsUserDomainMask = NSSearchPathDomainMask.UserDomainMask
if let paths = NSSearchPathForDirectoriesInDomains(nsDocumentDirectory, nsUserDomainMask, true) {
if paths.count > 0 {
    if let dirPath = paths[0] as? String {
        let readPath = dirPath.stringByAppendingPathComponent("Image.png")
        let image = UIImage(named: readPath)
        let writePath = dirPath.stringByAppendingPathComponent("Image2.png") 
        UIImagePNGRepresentation(image).writeToFile(writePath, atomically: true)
    }
  }
}

edited May 23 '17 at 12:08

Community

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answered Mar 10 '15 at 15:12

Jesse Onolemen

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Thanks! What would the code be then retrieve it? – Learnin Mar 12 '15 at 08:36
I believe the `image` variable stores the image so if you want to do anything with it be sure to use that :D – Jesse Onolemen Mar 12 '15 at 15:52

Programmatically save an image to xcassets in Swift

3 Answers3