Swift NSCoding Not working

Question

I\'m having trouble using NSCoding in Swift. I have attempted to implement the protocol but I get a crash whenever I call my save() method. Xcode p

Answer 1

Here is another example with an object called SNStock that has two string properties, ticker and name:

import Foundation

class SNStock: NSObject, NSCoding {

  let ticker: NSString
  let name: NSString

  init(ticker: NSString, name: NSString) {
    self.ticker = ticker
    self.name = name
  }

  // MARK: NSCoding

  required init(coder aDecoder: NSCoder) {
    self.ticker = aDecoder.decodeObjectForKey("ticker") as! NSString
    self.name = aDecoder.decodeObjectForKey("name") as! NSString
  }

  func encodeWithCoder(aCoder: NSCoder) {
    aCoder.encodeObject(ticker, forKey: "ticker")
    aCoder.encodeObject(name, forKey: "name")
  }

  // MARK: NSObjectProtocol

  override func isEqual(object: AnyObject?) -> Bool {
    if let object = object as? SNStock {
      return self.ticker == object.ticker &&
        self.name == object.name
    } else {
      return false
    }
  }

  override var hash: Int {
    return ticker.hashValue
  }
}