如何创建自定义导航栏Swift UI？

import SwiftUI

struct CustomNavigationBar: View {
    var body: some View {
        NavigationView {
            VStack {
                Text("Custom Navigation Bar")
                    .font(.title)
                    .foregroundColor(.blue)
                
                Spacer()
                
                NavigationLink(destination: Text("Next View")) {
                    Text("Next")
                        .font(.headline)
                        .foregroundColor(.white)
                        .padding()
                        .background(Color.blue)
                        .cornerRadius(10)
                }
            }
            .navigationBarTitle("Custom Navigation Bar", displayMode: .inline)
        }
        .navigationViewStyle(StackNavigationViewStyle())
    }
}

struct ContentView: View {
    var body: some View {
        CustomNavigationBar()
    }
}

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