在SwiftUI中更改选取器的导航标题

import SwiftUI

struct ContentView: View {
    @State private var selectedOption = 0
    
    var body: some View {
        NavigationView {
            Form {
                Section(header: Text("Options")) {
                    Picker(selection: $selectedOption, label: Text("Select Option")) {
                        Text("Option 1").tag(0)
                        Text("Option 2").tag(1)
                        Text("Option 3").tag(2)
                    }
                }
            }
            .navigationBarTitle(getNavigationTitle(), displayMode: .inline)
        }
    }
    
    func getNavigationTitle() -> String {
        switch selectedOption {
        case 0:
            return "Option 1"
        case 1:
            return "Option 2"
        case 2:
            return "Option 3"
        default:
            return ""
        }
    }
}

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