Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Enumerations and Optionals in Swift Introduction to Enumerations Enum Methods

Posted by manoj Singireddy
manoj Singireddy
1,762 Points

Enumerations and Optionals in Swift

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

func button() -> UIBarButtonItem {
    var doneButton = UIBarButtonItem(title: "Save", style: .done, target: nil, action: nil)
    let editButton = UIBarButtonItem(title: "Edit", style: .plain, target: nil, action: nil)
    switch self {
    case .done(let title):
        return doneButton
    case .edit(let title ):
        return editButton
    }
}

}

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

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 {
        var doneButton = UIBarButtonItem(title: "Save", style: .done, target: nil, action: nil)
        let editButton = UIBarButtonItem(title: "Edit", style: .plain, target: nil, action: nil)
        switch self {
        case .done(let title):
            return doneButton
        case .edit(let title ):
            return editButton
        }
    }
}

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