IOS editor bug. archivedData renamed
A general solution for iOS 12 would be:
class SettingsArchiver {
static func setData(_ value: Any, key: String) {
let ud = UserDefaults.standard
let archivedPool = try? NSKeyedArchiver.archivedData(withRootObject: value, requiringSecureCoding: true)
ud.set(archivedPool, forKey: key)
}
static func getData<T>(key: String) -> T? {
let ud = UserDefaults.standard
if let val = ud.value(forKey: key) as? Data,
let obj = try? NSKeyedUnarchiver.unarchiveTopLevelObjectWithData(val) as? T {
return obj
}
return nil
}
}
I am following the same example you are trying to do, and I figured out how to update the methods for storing and retrieving values in iOS 12, this should help you:
//MARK: Private Methods
private func saveMeals() {
let fullPath = getDocumentsDirectory().appendingPathComponent("meals")
do {
let data = try NSKeyedArchiver.archivedData(withRootObject: meals, requiringSecureCoding: false)
try data.write(to: fullPath)
os_log("Meals successfully saved.", log: OSLog.default, type: .debug)
} catch {
os_log("Failed to save meals...", log: OSLog.default, type: .error)
}
}
func getDocumentsDirectory() -> URL {
let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
return paths[0]
}
private func loadMeals() -> [Meal]? {
let fullPath = getDocumentsDirectory().appendingPathComponent("meals")
if let nsData = NSData(contentsOf: fullPath) {
do {
let data = Data(referencing:nsData)
if let loadedMeals = try NSKeyedUnarchiver.unarchiveTopLevelObjectWithData(data) as? Array<Meal> {
return loadedMeals
}
} catch {
print("Couldn't read file.")
return nil
}
}
return nil
}
Also you will find that you need to update ViewDidLoad as this:
override func viewDidLoad() {
super.viewDidLoad()
// Use the edit button item provided by the table view controller.
navigationItem.leftBarButtonItem = editButtonItem
let savedMeals = loadMeals()
if savedMeals?.count ?? 0 > 0 {
meals = savedMeals ?? [Meal]()
} else {
loadSampleMeals()
}
}
I hope this helps, for me the app is now working, storing and retrieving data.
FYI: This doesn't work with Xcode 11 beta and iOS 13 is should work with anything before those versions.