Handling Image Caching Issues in SwiftUI for Image Carousel on iPhone 13
After trying multiple solutions online, I still can't figure this out. I'm working with an scenario with image caching in a SwiftUI image carousel on iPhone 13. The images load correctly on the first render, but when I swipe back to previously loaded images, they appear blank or require a lagging reload time, even though they should be cached. I am using a combination of `@State` and `@StateObject` to manage the image loading, and I believe the question lies in how I'm caching the images in an `ObservableObject`. Here’s a simplified version of my code: ```swift import SwiftUI import Combine class ImageLoader: ObservableObject { @Published var image: UIImage? private var cancellable: AnyCancellable? func loadImage(from url: String) { guard let imageUrl = URL(string: url) else { return } cancellable = URLSession.shared.dataTaskPublisher(for: imageUrl) .map { $0.data } .decode(type: UIImage.self, decoder: JSONDecoder()) .replaceError(with: nil) .receive(on: DispatchQueue.main) .assign(to: &$image) } } struct ImageCarousel: View { @StateObject var loader = ImageLoader() var imageURLs: [String] var body: some View { TabView { ForEach(imageURLs, id: \.self) { url in VStack { if let image = loader.image { Image(uiImage: image) .resizable() .scaledToFit() } else { ProgressView() } } .onAppear { loader.loadImage(from: url) } } } .tabViewStyle(PageTabViewStyle()) } } ``` I've ensured that the image URLs are correct, but I keep getting the following behavior in my console when navigating back to previously loaded images: ``` URLSession: Failed to load data: The operation couldn’t be completed. (NSURLErrorDomain behavior -999.) ``` In addition to this, I've tried implementing a simple cache mechanism using a dictionary to store previously loaded images, but it doesn’t seem to improve performance or behavior. Any insights on how to effectively cache images in this context or avoid reloading them when swiping back would be greatly appreciated! I'm working with Swift in a Docker container on macOS. Any ideas what could be causing this? Is there a simpler solution I'm overlooking?