How can I save an array to UserDefaults, and then retrieve that array and print [duplicate]

问题

This question already has answers here:

Best Practice using an Array of Strings with NSUserDefault (2 answers)

Closed 2 years ago.

Here is my code. It seems an error. Can anyone please help.

class PopUpVC: UIViewController {
  var myArray1 = ["1","2","3"]
  var myArray2 = [String]()
  UserDefaults.standard.set(myArray1, forKey: "array")

  override func viewDidLoad() {
    super.viewDidLoad()
    self.myArray2 = (UserDefaults.standard.string(forKey: "array") as? [String])!
    print(self.myArray)
  }

回答1:

class PopUpVC: UIViewController {
  var myArray1 = ["1","2","3"]
  var myArray2 = [String]()

 override func viewDidLoad() {
      super.viewDidLoad()
      UserDefaults.standard.set(myArray1, forKey: "array")
      self.myArray2 = UserDefaults.standard.stringArray(forKey: "array")!
      print(self.myArray2)
 }

来源：https://stackoverflow.com/questions/45957220/how-can-i-save-an-array-to-userdefaults-and-then-retrieve-that-array-and-print