使用Combine路由SwiftUI视图

import SwiftUI
import Combine

class UserData: ObservableObject {
    @Published var username: String = ""
}

struct ContentView: View {
    @ObservedObject var userData: UserData
    
    var body: some View {
        VStack {
            TextField("Username", text: $userData.username)
                .padding()
            
            NavigationLink(destination: DetailView(userData: userData)) {
                Text("Next")
                    .font(.headline)
                    .foregroundColor(.white)
                    .padding()
                    .background(Color.blue)
                    .cornerRadius(10)
            }
        }
    }
}

struct DetailView: View {
    @ObservedObject var userData: UserData
    
    var body: some View {
        VStack {
            Text("Welcome, \(userData.username)!")
                .font(.headline)
                .padding()
        }
    }
}

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