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iOS Swift 2.0 Enumerations and Optionals Introduction to Enumerations Enum Methods

Posted by jc laurent
jc laurent
6,351 Points

button not accessible

button error

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(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
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

jc laurent
jc laurent
6,351 Points
jc laurent
jc laurent
6,351 Points

thks indeed, but it's

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

never mind I do it all the time!