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iOS Swift 2.0 Enumerations and Optionals Introduction to Enumerations Enum Methods

Ryan Maneo
Ryan Maneo
4,342 Points
Posted by Ryan Maneo
Ryan Maneo
4,342 Points

Lost...

I'm so lost right now. I am googling like crazy to understand what its asking me to do. I had no problem with pt. 1 of the code challenge, but now theres so many tasks that as soon as I think I know how to do one thing I forget another and vise versa. Should I re-take this entire course or even go back a few courses and re-take them? Or continue as is?

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() -> UIBarButtonItem.title {

    return button(UIBarButtonStyle.Done)
    }
}


let done = Button.Done("Done")

1 Answer

jcorum
jcorum
71,830 Points

Ryan, don't feel bad if you need to review a video. I'm sure we've all done that more than once!

But it might help if you just go through this line by line.

enum Button {
    case Done(String)
    case Edit(String)
    case Bordered(String)

    func toUIBarButtonItem() -> UIBarButtonItem {
        switch self {
        case .Done(let doneValue):
            return UIBarButtonItem(title: doneValue, style: UIBarButtonStyle.Done, target: nil, action: nil)
        case .Edit(let editValue):
            return UIBarButtonItem(title: editValue, style: UIBarButtonStyle.Plain, target: nil, action: nil)
        case .Bordered(let borderValue):  //not in challenge
            return UIBarButtonItem(title: borderValue, style: UIBarButtonStyle.Plain, target: nil, action: nil)
        }
    }
}
let done = Button.Done("Done")
let doneButton = done.toUIBarButtonItem()

The enum in the challenge only had two cases, but I added the third, just to be complete. The editor doesn't mind.