SwiftUI UIImage from path not visible

Question

I have an image stored inside an AppGroup, but I'm unable to show the image and I'm not sure why.

I have this inside my view:

Image(uiImage: getImageFromDir(imageName: name)!)
   .resizable()

I get the image using the following function:

func getImageFromDir(imageName: String) -> UIImage? {
  
  let appGroupPath = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.myId")!
  
  let imagePath = appGroupPath.appendingPathComponent(imageName)
  do {
    let imageData = try Data(contentsOf: imagePath)
    return UIImage(data: imageData)
  } catch {
    print("Error loading image : \(error)")
  }
  return nil
}

This runs fine and the catch block is never hit, but the image still isn't visible. My initial thought was that I had an invalid path, but this doesn't seem the case since I can load the image as expected in React Native using the path.

There's also nothing wrong with my styles since a different image loaded from Assets.xcassets works fine.

Asperi · Accepted Answer · 2020-10-31 04:32:19Z

2

Assuming the file is really existed at specified location (you can verify generated URL for that) try with security scoped resource wrapper, like below

func getImageFromDir(imageName: String) -> UIImage? {
  
  let appGroupPath = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "group.myId")!
  
  let imagePath = appGroupPath.appendingPathComponent(imageName)
  do {
    if imagePath.startAccessingSecurityScopedResource() {  // << this !!
        defer {
            imagePath.stopAccessingSecurityScopedResource()   // << and this !!
        }
         let imageData = try Data(contentsOf: imagePath)
         return UIImage(data: imageData)
        }
  } catch {
    print("Error loading image : \(error)")
  }
  return nil
}

answered Oct 31, 2020 at 4:32

Asperi

262k28 gold badges594 silver badges888 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Kipnoedels Over a year ago

Unfortunately, imagePath.startAccessingSecurityScopedResource() returns false.

Kipnoedels Over a year ago

I can also absolutely confirm that the path to the file is right. When viewing the data of imageData and clicking Export -> save as myimage.jpg, I can sucessfully open the image in finder.

Kipnoedels · Accepted Answer · 2020-11-01 11:15:15Z

0

While my solution is working, it is NOT a valid answer to why my images aren't showing and I would still like to know why, if anyone knows who comes across this post in the future.

To solve this, instead of using an absolute path to the image, I used a base64 string to use as the data. The image now succesfully shows.

answered Nov 1, 2020 at 11:15

Kipnoedels

1,4561 gold badge13 silver badges29 bronze badges

Collectives™ on Stack Overflow

SwiftUI UIImage from path not visible

2 Answers 2

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related