picker.swift

import SwiftUI

let items = ["Basic", "Advanced", "Ultra"]

struct ContentView: View {
    @State var value: Int = 0
    
    var body: some View {
        VStack {
            Picker(selection: $value, label: Text("Mode:")) {
                ForEach(0..<items.count) { i in
                    Text(items[i])
                }
            }
            Picker(selection: $value, label: Text("Mode:")) {
                ForEach(items.indices) { i in
                    Text(items[i])
                }
            }
            Picker(selection: $value, label: Text("Mode:")) {
                ForEach(items, id: \.self) { item in
                    Text(item).tag(items.firstIndex(of: item)!)
                }
            }
            Picker(selection: $value, label: Text("Mode:")) {
                Text("Basic").tag(0)
                Text("Advanced").tag(1)
                Text("Ultra").tag(2)
            }
            Text("\(value) - \(items[value])")
        }
        .frame(maxWidth: .infinity, maxHeight: .infinity)
    }
}


struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}