Persistently store list items added by user in SwiftUI - swift

Question

I am very new to swift (as in I started today) and I have code that allows the user to add items to a list:
private func onAdd() {
let alert = UIAlertController(title: "Enter a name for your plant", message: "Make sure it's descriptive!", preferredStyle: .alert)
alert.addTextField { (textField) in
textField.placeholder = "Enter here"
}
alert.addAction(UIAlertAction(title: "Done", style: .default) { _ in
let textField = alert.textFields![0] as UITextField
plantName2 = textField.text ?? "Name"
appendItem()
})
showAlert(alert: alert)
}
private func appendItem() {
items.append(Item(title: plantName2))
}
and
struct HomePage: View {
#State var plantName2: String = ""
#State private var items: [Item] = []
#State private var editMode = EditMode.inactive
private static var count = 0
var body: some View {
NavigationView {
List {
Section(header: Text("My Plants")) {
ForEach(items) { item in
NavigationLink(destination: PlantView(plantName3: item.title)) {
Text(item.title)
}
}
.onDelete(perform: onDelete)
.onMove(perform: onMove)
.onInsert(of: [String(kUTTypeURL)], perform: onInsert)
}
}
.listStyle(InsetGroupedListStyle()) // or GroupedListStyle
.navigationBarTitle("Plantify")
.navigationBarTitleTextColor(CustomColor.pastelGreen)
.navigationBarItems(leading: EditButton().accentColor(CustomColor.pastelGreen), trailing: addButton)
.environment(\.editMode, $editMode)
}
}
and I want the entries the user adds to be saved in persistent storage. I've looked at the docs for persistent storage and am a bit confused. Is it even possible with the code I have?
Thanks!

Answer 1

Basically you can save the data as String array in UserDefaults
func save() {
UserDefaults.standard.set(items.map(\.title), forKey: "items")
}
func load() {
let savedItems = UserDefaults.standard.stringArray(forKey: "items") ?? []
items = savedItems.map(Item.init)
}
and call load in .onAppear.
However if there is a huge amount of items consider a file in the Documents folder or Core Data