In this post, we will see how to display an Enum in a Picker.
First of all, we start creating a new project called ViewEnum where we will add a file called LstCars, used to define an Enum consisting of a list of car brands:
[LSTCARS.SWIFT]
// with the CaseIterable protocol, we will
// have the list of all enum's cases
enum LstCars: Int, CaseIterable {
case ferrari = 0
case porsche = 1
case lamborghini = 2
case pagani = 3
case mclaren = 4
init(type: Int) {
switch type {
case 0: self = .ferrari
case 1: self = .porsche
case 2: self = .lamborghini
case 3: self = .pagani
case 4: self = .mclaren
default: self = .ferrari
}
}
// with description, we could display a detailed description
var description: String {
switch self {
case .ferrari: return "Ferrari - LaFerrari"
case .porsche: return "Porsche - Panamera"
case .lamborghini: return "Lamborghini - Aventador"
case .pagani: return "Pagani - Huayra"
case .mclaren: return "McLaren - 720S"
}
}
}
Finally, we define a Picker in the file ContentView where will display the LstCars enum:
[CONTENTVIEW.SWIFT]
import SwiftUI
struct ContentView: View {
@State private var selectedCar = LstCars.ferrari
var body: some View {
Picker("Choose a car", selection: $selectedCar)
{
ForEach(LstCars.allCases, id: \.self)
{ carType in
Text(carType.description)
}
}
Text("You have selected \(selectedCar.description)")
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
Now, if we run the application, this will be the result:
