Saving TableView cell using UserDefaults - swift

Question

I'm trying to get cell of tableView using UserDefaults, but after i reload app it is always empty
This is my Model:
struct Note: Codable {
var title: String
var description: String
}
class Notes {
var stock: [Note] = []
}
View contoller
var model = Notes()
This is how i get data
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.register(UINib(nibName: "TableViewCell", bundle: nil), forCellReuseIdentifier: "TableViewCell")
tableView.reloadData()
if let fetchedData = UserDefaults.standard.data(forKey: "notes") {
let fetchedBookies = try! PropertyListDecoder().decode([Note].self, from: fetchedData)
print(fetchedBookies)
} else {
model.stock = []
}
}
This is my cell
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "TableViewCell") as! TableViewCell
cell.titleOutlet.text = self.model.stock[indexPath.row].title
cell.descriptionOutlet?.text = self.model.stock[indexPath.row].description
return cell
}
How i save data
#IBAction func check(_ sender: Any) {
let newstock = Note(title: "check", description: "check2")
model.stock.append(newstock)
print(model.stock.count)
let bookiesData = try! PropertyListEncoder().encode(model.stock)
UserDefaults.standard.set(bookiesData, forKey: "notes")
tableView.reloadData()
}
Thank you very much!

Answer 1

I recommend you to use Json Encoder/Deocder.
First set your Notes class to conform to Codable:
class Notes: Codable {
var stock: [Note] = []
}
Here is an example of how to use Json Encoder / Decoder:
func save(notes: Notes) throws {
let encoder = JSONEncoder()
do {
let data = try encoder.encode(notes)
UserDefaults.standard.set(data, forKey: "notes")
} catch let error {
throw error
}
}
func load() -> Notes {
guard let data = UserDefaults.standard.data(forKey: "notes") else {
return Notes() // Default
}
let decoder = JSONDecoder()
do {
let object = try decoder.decode(Notes.self, from: data)
return object
} catch {
return Notes() // Default
}
}
In your code just call load() to get your notes from User Defaults
And save(notes:) to save them into User Defaults.