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iOS Enumerations and Optionals in Swift Introduction to Enumerations Enum Methods

Bruce Rƶttgers
Bruce Rƶttgers
18,211 Points

Need help with the method at exercise 2

Can't figure out what I have really to do in the method.

Error output (from Exercise): swift_lint.swift:51:15: error: enum case 'done' not found in type 'BarButton.Type' case .done: return UiBarButtonStyle.done ^ swift_lint.swift:51:28: error: use of unresolved identifier 'UiBarButtonStyle' case .done: return UiBarButtonStyle.done ^~~~~~~~~~~~~~~~ swift_lint.swift:27:7: note: did you mean 'UIBarButtonItem'? class UIBarButtonItem { ^ swift_lint.swift:22:6: note: did you mean 'UIBarButtonItemStyle'? enum UIBarButtonItemStyle : Int { ^ swift_lint.swift:52:15: error: enum case 'edit' not found in type 'BarButton.Type' case .edit: return UIBarButtonStyle.plain ^ swift_lint.swift:52:28: error: use of unresolved identifier 'UIBarButtonStyle' case .edit: return UIBarButtonStyle.plain ^~~~~~~~~~~~~~~~ swift_lint.swift:27:7: note: did you mean 'UIBarButtonItem'? class UIBarButtonItem { ^ swift_lint.swift:22:6: note: did you mean 'UIBarButtonItemStyle'? enum UIBarButtonItemStyle : Int { ^

buttons.swift
// Example of UIBarButtonItem instance
// let someButton = UIBarButtonItem(title: "A Title", style: .plain, target: nil, action: nil)

enum BarButton {
    case done(title: String)
    case edit(title: String)

    func button() -> UIBarButtonItem {
      switch BarButton.self {
        case .done: return UiBarButtonStyle.done
        case .edit: return UIBarButtonStyle.plain
      }
    }
}

let done = BarButton.done(title: "Save")
let button = done.button()

1 Answer

Jeff McDivitt
Jeff McDivitt
23,970 Points
enum BarButton {
    case done(title: String)
    case edit(title: String)

    func button() -> UIBarButtonItem{
        switch self {
        case .done(let title):
            return UIBarButtonItem(title: title, style: .plain, target: nil, action: nil)
        case .edit(let title):
            return UIBarButtonItem(title: title, style: .plain, target: nil, action: nil)
    }
}

}
let done = BarButton.done(title: "Save")
let doneButton = done.button()