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iOS Enumerations and Optionals in Swift Introduction to Enumerations Enum Methods

Oleg Egorov
Oleg Egorov
1,028 Points
Posted by Oleg Egorov
Oleg Egorov
1,028 Points

What's wrong? I guess that I incorrectly assign a value to a new button constant.

Could you describe me my mistake please?

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(title: BarButton) -> UIBarButtonItem {
        switch title {
        case .done: return UIBarButtonItem(title: BarButton.done, style: UIBarButtonStyle.done, target: nil, action: nil)
        case .edit: return UIBarButtonItem(title: BarButton.edit, style: UIBarButtonStyle.plain, target: nil, action: nil)
        }
    }
}

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

2 Answers

Thomas Dobson
Thomas Dobson
7,511 Points
Thomas Dobson
Thomas Dobson
7,511 Points

Oleg,

You were close! Some minor changes:

// 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 self
        {
        case .done(let title): return UIBarButtonItem(title: title, style: .done, 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 button = done.button()