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iOS Enumerations and Optionals in Swift Introduction to Enumerations Enum Methods

Gavin Olsen
Gavin Olsen
4,514 Points
Posted by Gavin Olsen
Gavin Olsen
4,514 Points

What's wrong with my code

on line 12 the compiler gives me no errors, but this is not the way I understood how to do it from the video. This is interesting when line 13, when I am doing what I understood was right, gives me an error.

It is either in lines 12 or 13 that has an error, or how I am declaring the variable doneButton on line 19 that is giving me errors. Any input is greatly appreciated!

Thanks!

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 self
      {
        case .done: return UIBarButtonItem(title: "done", style: .done, target: nil, action: nil)
        case .edit(let edit): return UIBarButtonItem(title: "edit", style: .plain, target: nil, action: nil)
      }
    }
}

let done = BarButton.done(title: "Save")
let doneButton: BarButton = done.button()
Attila Marosi
Attila Marosi
6,144 Points
Attila Marosi
Attila Marosi
6,144 Points

Hello Gavin,

in your switch statement you forgot to define the title part, furthermore you don't need to define them (save,edit). Here is the working code:

//Code

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)  
    }
}