iOS 14、Swift UI 2改变NavigationLink内所选列表项的背景色

import SwiftUI

struct ContentView: View {
    @State private var selectedColor: Color? = nil
    
    var body: some View {
        NavigationView {
            List {
                NavigationLink(destination: ColorDetailView(color: .red), tag: .red, selection: $selectedColor) {
                    Text("Red")
                }
                NavigationLink(destination: ColorDetailView(color: .blue), tag: .blue, selection: $selectedColor) {
                    Text("Blue")
                }
                NavigationLink(destination: ColorDetailView(color: .green), tag: .green, selection: $selectedColor) {
                    Text("Green")
                }
            }
            .listStyle(GroupedListStyle())
            .background(Color.white) // 设置列表的背景色
            
            Text("Selected color: \(selectedColor?.description ?? "None")")
                .padding()
        }
    }
}

struct ColorDetailView: View {
    let color: Color
    
    var body: some View {
        Rectangle()
            .fill(color)
            .frame(height: 200)
            .navigationBarTitle(Text(color.description), displayMode: .inline)
    }
}

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