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iOS Swift 2.0 Enumerations and Optionals Introduction to Enumerations Enum Methods

Andrey Mitko
Andrey Mitko
19,127 Points
Posted by Andrey Mitko
Andrey Mitko
19,127 Points

Where is my problem?

Help me please!

buttons.swift 
import Foundation

enum UIBarButtonStyle {
    case Done
    case Plain
    case Bordered
}

class UIBarButtonItem {

    var title: String?
    let style: UIBarButtonStyle
    var target: AnyObject?
    var action: Selector

    init(title: String?, style: UIBarButtonStyle, target: AnyObject?, action: Selector) {
        self.title = title
        self.style = style
        self.target = target
        self.action = action
    }
}
enums.swift 
enum Button {
    case Done(String)
    case Edit(String)
    func  toUIBarButtonItem() -> UIBarButtonItem {
        switch self{
        case Button.Done(let value1): return UIBarButtonItem.init(title: value1, style:  UIBarButtonStyle.Done, target: nil, action: nil)
        case Button.Edit(let value2): return UIBarButtonItem.init(title: value2, style: UIBarButtonStyle.Plain, target: nil, action: nil)
        }
        }
    }

let doneButton = Button.Done("OK").toUIBarButtonItem()

1 Answer

Chase Marchione
Chase Marchione
155,055 Points
Chase Marchione
Chase Marchione
155,055 Points

Hi Andrey,

You're close: per the objective instructions, you'll want to create a constant called done that will include the string "Done" rather than "OK".

enum Button {
  case Done(String)
  case Edit(String)

  func toUIBarButtonItem() -> UIBarButtonItem {
    switch self {
      case Button.Done(let value1): return UIBarButtonItem.init(title: value1, style: UIBarButtonStyle.Done, target: nil, action: nil)
      case Button.Edit(let value2): return UIBarButtonItem.init(title: value2, style: UIBarButtonStyle.Plain, target: nil, action: nil)
    }
  }
}

let done = Button.Done("Done")
let doneButton = done.toUIBarButtonItem()

(As a side note, you have a couple extra spaces, one after 'func' and another after style for Button.Done. This doesn't influence the code's ability to pass, but it can help with readability to keep it to one space between words in a statement of code.)

Hope this helps!