How do I encode a custom class object using UserDefaults that has a variable of a custom class?

Question

I was going to use Core Data but thought this was easier but can't find anything online about how to store an array of Cell class as a variable in the Cell class itself.

class Cell: NSObject, NSCoding {
  var name:String!
  var tag:String?
  var more:String?
  var amount:String!
  var balance:String!
  var subCells:[Cell]?//THIS IS THE ONE I'M STUGGLING WITH

  override init() {
    super.init()
  }

  init(name: String, tag: String, more: String, amount: String, balance: String, subCells: [Cell] = [Cell]()) {
    super.init()
    self.name = name
    self.tag = tag
    self.more = more
    self.amount = amount
    self.balance = balance
    self.subCells = subCells//THIS
  }

  required init(coder decoder: NSCoder) {
    self.name = decoder.decodeObject(forKey: "name") as! String
    self.tag = decoder.decodeObject(forKey: "tag") as? String
    self.more = decoder.decodeObject(forKey: "more") as? String
    self.amount = decoder.decodeObject(forKey: "amount") as! String
    self.balance = decoder.decodeObject(forKey: "balance") as! String
    self.subCells = decoder.decodeObject(forKey: "subCells") as? [Cell]//THIS

  }

  func initWithCoder(decoder: NSCoder) -> Cell{
    self.name = decoder.decodeObject(forKey: "name") as! String
    self.tag = decoder.decodeObject(forKey: "tag") as? String
    self.more = decoder.decodeObject(forKey: "more") as? String
    self.amount = decoder.decodeObject(forKey: "amount") as! String
    self.balance = decoder.decodeObject(forKey: "balance") as! String
    self.subCells = decoder.decodeObject(forKey: "subCells") as? [Cell]//THIS
    return self
  }

  func encode(with aCoder: NSCoder) {      
    aCoder.encode(self.name, forKey: "name")
    aCoder.encode(self.tag, forKey: "tag")
    aCoder.encode(self.more, forKey: "more")
    aCoder.encode(self.amount, forKey: "amount")
    aCoder.encode(self.balance, forKey: "balance")
    aCoder.encode(self.subCells, forKey: "subCell")//THIS
  }  
}

Am I forced to use core data to solve this or can I encode the array before encoding the whole class in the viewdidload()

FYI - You don't need the initWithCoder(decoder:) method, just the init(coder:). — rmaddy
– rmaddy, Commented Dec 31, 2017 at 7:29
What problem or error message is you have with your current code? — Paulw11
– Paulw11, Commented Dec 31, 2017 at 8:16
NS error, I fixed it by encoding and decoding before again, kinda recursive — Rob
– Rob, Commented Dec 31, 2017 at 22:53

Rob · Accepted Answer · 2017-12-31 08:47:43Z

ok i figured it out

required init(coder decoder: NSCoder) {
    self.name = decoder.decodeObject(forKey: "name") as! String
    self.tag = decoder.decodeObject(forKey: "tag") as? String
    self.more = decoder.decodeObject(forKey: "more") as? String
    self.amount = decoder.decodeObject(forKey: "amount") as! String
    self.balance = decoder.decodeObject(forKey: "balance") as! String
    self.subCells = NSKeyedUnarchiver.unarchiveObject(with: (decoder.decodeObject(forKey: "subCells") as! NSData) as Data) as? [Cell]
}


func encode(with aCoder: NSCoder) {

    aCoder.encode(self.name, forKey: "name")
    aCoder.encode(self.tag, forKey: "tag")
    aCoder.encode(self.more, forKey: "more")
    aCoder.encode(self.amount, forKey: "amount")
    aCoder.encode(self.balance, forKey: "balance")
    aCoder.encode(NSKeyedArchiver.archivedData(withRootObject: self.subCells), forKey: "subCells")

}

Collectives™ on Stack Overflow

How do I encode a custom class object using UserDefaults that has a variable of a custom class?

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related