Append Array with UserDefaults input text - arrays

Question

I have an Array of strings which is populating a collection view and that works well. The issue is I want to append that array with Strings that is saved in user defaults from user input textfield. I am getting the UserDefault data, The issue is it is not showing up in seperate collection view cell. it is getting attached at the end of each string in the current cells. Thanks in advance, any help would be appreciated.
This is what I tried so far:
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! CollectionViewCell
let defaults = UserDefaults.standard
let value = defaults.string(forKey: "Gratitude")
print(value!)
//Array that I am trying to append with userdefault data
gratitudeArray.append(value!)
// Configure the cell
cell.cellLabel.text = gratitudeArray[indexPath.row]
return cell
}
// I am geeting user input from alert and saving in userdefaults like this:
func presentAlert() {
let alertController = UIAlertController(title: "", message: "Create your own Gratitude:", preferredStyle: .alert)
let confirmAction = UIAlertAction(title: "Save", style: .default) { (_) in
if let field = alertController.textFields?[0] {
// store data
UserDefaults.standard.set(field.text, forKey: "Gratitude")
UserDefaults.standard.synchronize()
} else {
print()
}
}
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel) { (_) in }
alertController.addTextField { (textField) in
//print(textField.text!)
//textField.placeholder = ""
}
alertController.addAction(confirmAction)
alertController.addAction(cancelAction)
self.present(alertController, animated: true, completion: nil)
}

Answer 1

Store String in ViewDidLoad() like below:
var strValue: String = ""
override func viewDidLoad() {
super.viewDidLoad()
let defaults = UserDefaults.standard
strValue= defaults.string(forKey: "Gratitude")
}
and display in cellForItemAt like this:
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! CollectionViewCell
cell.cellLabel.text = gratitudeArray[indexPath.row] + " " + strValue
return cell
}

Answer 2

If I understand your problem correctly, you want number of cells to increase by one (the value you extract out of UserDefaults). For that, you should append it some place which is outside collection view's data source methods (like viewDidLoad()) and then reload your collection view.
override func viewDidLoad() {
super.viewDidLoad()
let defaults = UserDefaults.standard
strValue = defaults.string(forKey: "Gratitude")
gratitudeArray.append(strValue)
self.collectionView.reloadData()
}

Answer 3

I solved the issue by creating an array in my alert controller to hold user input and then save that array to user defaults.
func presentAlert() {
let alertController = UIAlertController(title: "", message: "Create your own Gratitude:", preferredStyle: .alert)
let confirmAction = UIAlertAction(title: "Save", style: .default) { (_) in
if let field = alertController.textFields {
let textFieldArray = field as [UITextField]
let text = textFieldArray[0].text
let key = "Gratitude"
var myArray = UserDefaults.standard.array(forKey: key) ?? []
myArray.append(String(describing: text!))
UserDefaults.standard.set(myArray, forKey: key)
print(myArray)
} else {
print()
}
}
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel) { (_) in }
alertController.addTextField { (textField) in
}
alertController.addAction(confirmAction)
alertController.addAction(cancelAction)
self.present(alertController, animated: true, completion: nil)
}