GO FURTHER, FASTER: Try the Swift Career Accelerator today! >>

Error when saving image to Documents Directory

Forums > 100 Days of SwiftUI
@TheApApp  HWS+

I am still working on the app, but I have run into a problem I don't understand. I decided to save the images and information as a combination of a json encoded file and then related UUID identified image files in the document directory. Periodically when saving the image I get the following error:

1) Here's debug I have in my app:

2022-12-30 11:51:38.673804-0500 Challenge77[9990:3528132] 
[claims] 27328842-F382-4DBF-BE78-27B42569217E 
grantAccessClaim reply is an error: Error Domain=NSCocoaErrorDomain Code=4101 
"Couldn’t communicate with a helper application."
UserInfo={NSUnderlyingError=0x600002f29fb0 {Error Domain=PHAssetExportRequestErrorDomain Code=0 
"The operation couldn’tbe completed. (PHAssetExportRequestErrorDomain error 0.)" 
UserInfo={NSLocalizedDescription=The operation couldn’t becompleted. (PHAssetExportRequestErrorDomain error 0.),
NSUnderlyingError=0x600002f2a760 {Error Domain=PAMediaConversionServiceErrorDomain Code=2 
"The operation couldn’t be completed.(PAMediaConversionServiceErrorDomain error 2.)" 
UserInfo={NSLocalizedDescription=The operation couldn’t be completed.
(PAMediaConversionServiceErrorDomain error 2.)}}}}}

Any suggestions on what I am doing wrong?

My code can be found on github at - https://github.com/TheApApp/Challenge77

(formatted error to make it easier to read)

2      

@TheApApp  HWS+

Note, if I hit the home button on the simulator and go back in, I can save the next image no problem. Also, when this error happens, the Add button becomes disabled until I hit the home button. I assume the app is in some kinda of hung state.

2      

@TheApApp  HWS+

It appears that this is a thread issue in my ImagePicker. The warning shows up as

Publishing changes from background threads is not allowed; make sure to publish values from the main thread (via operators like receive(on:)) on model updates.

in the following function:

        func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
            picker.dismiss(animated: true)  // let's get rid of the picker

            guard let provider = results.first?.itemProvider else { return } // let's see if there is anything in the provider if not bail out

            if provider.canLoadObject(ofClass: UIImage.self) {
                provider.loadObject(ofClass: UIImage.self ) { image, _ in
                    self.parent.image = image as? UIImage // WARNING SHOWS HERE
                }
            }
        }

I am not sure how to address this. I tried to wrap this in a Task on MainActor.run but got a message that this is invalid in Swift 6.

2      

@NigelGee  HWS+

On the call for the func wrap it in

Task { @MainActor in
  // call to the picker
}

or 

DispatchQueue.main.async {
  provider.loadObject(ofClass: UIImage.self ) { image, _ in
      self.parent.image = image as? UIImage
  }
}

2      

@theoriz0  

I ran into a similar error, it seems to be a bug in Simulator. Choose the second picture then it successfully saves.

https://developer.apple.com/forums/thread/699155

2      

Hacking with Swift is sponsored by try! Swift Tokyo.

SPONSORED Ready to dive into the world of Swift? try! Swift Tokyo is the premier iOS developer conference will be happened in April 9th-11th, where you can learn from industry experts, connect with fellow developers, and explore the latest in Swift and iOS development. Don’t miss out on this opportunity to level up your skills and be part of the Swift community!

Get your ticket here

Sponsor Hacking with Swift and reach the world's largest Swift community!

Archived topic

This topic has been closed due to inactivity, so you can't reply. Please create a new topic if you need to.

All interactions here are governed by our code of conduct.

Swift breaks down barriers between ideas and apps, and I want to break down barriers to learning it. I’m proud to make hundreds of tutorials that are free to access, and I’ll keep doing that whatever happens. But if that’s a mission that resonates with you, please support it by becoming a HWS+ member. It’ll bring you lots of benefits personally, but it also means you’ll directly help people all over the world to learn Swift by freeing me up to share more of my knowledge, passion, and experience for free! Become Hacking with Swift+ member.
Click here to visit the Hacking with Swift store >>
 
Unknown user

You are not logged in

Log in or create account
 

Link copied to your pasteboard.