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iOS Enumerations and Optionals in Swift Introduction to Enumerations Enum Methods

Posted by Collin Cannavo
Collin Cannavo
2,494 Points

"An enum named Button" challenge throwing an error

The error I'm receiving says "Make sure you assign the results of the expression to a constant named doneButton". So I did that and I still get the error. Can someone point me in the right direction?

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

import UIBarButtonItem

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

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


let doneButton = BarButton.done(title: "A title", style: .done, target: nil, aciton: nil).button()

1 Answer

Jeff McDivitt
Jeff McDivitt
23,970 Points
Jeff McDivitt
Jeff McDivitt
23,970 Points

It looks as though you are just stuck on the last part; here is how it should look. Let me know if you have any questions

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 button = done.button()
Collin Cannavo
Collin Cannavo
2,494 Points

Thanks! I can see where I went wrong now. I appreciate it.