Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

iOS Swift 2.0 Enumerations and Optionals Introduction to Enumerations Enum Methods

button not accessible

button error

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
enum Button {
    case Done(String)
    case Edit(String)
    func toUIBarButtonItem(button:Button) -> uIBarButtonStyle  {
   switch button {
    case Button.Done: return UIBarButtonStyle.Done
    case Button.Edit: return UIBarButtonStyle.Plain

let doneButton = Button().toUIBarButtonItem()

let done = Button.Done("Done")
Rafael Reis
Rafael Reis
14,931 Points

You are returning the wrong value, it should be ->UIBarButtonItem, and the method shouldn't have a parameter of the type button, for this example you we don't have a parameter so it should look like this:

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

and you have to fix your constants as well, where you actually set the let doneButton to the enum Button, but with the Done property, like this:

let doneButton = Button.Done("Done")

let done = done.toUIBarButtonItem()

Sorry if the message is not formatted good.

1 Answer

thks indeed, but it's

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

never mind I do it all the time!