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iOS Enumerations and Optionals in Swift Introduction to Enumerations Enum Methods

Posted by Noe Arzate
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Noe Arzate
Python Web Development Techdegree Student 6,077 Points

I can't seem to be able to solve step 2 of this code challenge. Sample code would be appreciated?

I'm just confused with this challenge. I've tried several things and it seems I just keep creating additional errors.

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 BarButton.done(let done): return someButton(title: done, style: UIBarButtonStyle.done, target: nil, action: nil)
        case BarButton.edit(let edit): return someButton(title: edit, style: UIBarButtonStyle.plain, target: nil, action: nil)
        }
    }
}

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

3 Answers

Jingxiang Gou
Jingxiang Gou
17,821 Points
Jingxiang Gou
Jingxiang Gou
17,821 Points

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()

Noe Arzate
seal-mask
.a{fill-rule:evenodd;}techdegree
Noe Arzate
Python Web Development Techdegree Student 6,077 Points
Noe Arzate
.a{fill-rule:evenodd;}techdegree
Noe Arzate
Python Web Development Techdegree Student 6,077 Points

Thank you. I was able to get it to pass the code challenge. However, in xcode I keep getting an error message - "Use of undeclared type 'UIBarButtonItem".

func button() -> UIBarButtonItem

Jack Wilson
Jack Wilson
2,058 Points
Jack Wilson
Jack Wilson
2,058 Points

Think you just need to import the UIKit

Noe Arzate
seal-mask
.a{fill-rule:evenodd;}techdegree
Noe Arzate
Python Web Development Techdegree Student 6,077 Points
Noe Arzate
.a{fill-rule:evenodd;}techdegree
Noe Arzate
Python Web Development Techdegree Student 6,077 Points

Yeah, that was it in xcode.

Thanks