通过Picker更改@Published变量

import SwiftUI

struct ContentView: View {
    @State private var selectedValue = ""
    @Published var selectedOption = ""

    var body: some View {
        VStack {
            Picker("Select an option", selection: $selectedValue) {
                Text("Option 1").tag("Option 1")
                Text("Option 2").tag("Option 2")
                Text("Option 3").tag("Option 3")
            }
            .pickerStyle(.segmented)
            .onChange(of: selectedValue) { newValue in
                selectedOption = newValue
            }

            Text("Selected Option: \(selectedOption)")
        }
    }
}

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

Picker("Select an option", selection: $selectedValue) {
    Text("Option 1").tag("Option 1")
    Text("Option 2").tag("Option 2")
    Text("Option 3").tag("Option 3")
}
.pickerStyle(.segmented)
.onChange(of: selectedValue) { newValue in
    selectedOption = newValue
}