Hello, I am relatively new to swift and completely new to FileManager, and I encountered some very strange behaviour of my app.
I have a "Day" struct that can save an image provided to it by the user:
struct Day: Codable, Comparable, Equatable, Identifiable {
/*
some vars and inits
*/
private var dayImagePath: URL?
var displayedDayImage: UIImage? {
guard let dayImagePath = dayImagePath else { return nil }
do {
let data = try Data(contentsOf: dayImagePath)
guard let image = UIImage(data: data) else { throw ImageProcessingError.noDayImage }
return image
} catch {
print(error.localizedDescription)
return UIImage(systemName: "questionmark.folder")
}
}
mutating func addDayImage(_ image: UIImage) {
if dayImagePath == nil {
dayImagePath = FileManager.documentsDirectory.appendingPathComponent(id.toStringId().appending("DayImage.jpeg"))
}
if let data = image.jpegData(compressionQuality: 0.8) {
do {
try data.write(to: dayImagePath!, options: [.atomic, .completeFileProtection])
} catch {
print(error.localizedDescription)
}
}
}
/*
some more code here
*/
}
The documents directory is found using this FileManager extension:
extension FileManager {
static var documentsDirectory: URL {
let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
return paths[0]
}
}
Adding the image works well, the image is displayed and stored correctly. However, it gets lost on the next app relaunch/rebuild with the following error message: "The file “20220917DayImage.jpeg” couldn’t be opened because there is no such file." What am I doing wrong? I would be very grateful for any suggestions. Thank you!
