ios – SwiftUI List can’t add index to alternate background colors

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How to implement alternate list background colors in my SwiftUI lists to display system colors or custom colors.

import SwiftUI

struct FriendshipListView: View {
    
    @EnvironmentObject var listViewModel: MenuListFriendshipViewModel
    
    var body: some View {
        NavigationView {
            List {
                //Use the $ syntax to pass a binding on to the subviews
                ForEach($listViewModel.items) { $item in
                    MenuListRowView(item: $item)
                }
            }
            .navigationBarTitle(Text("Friendships / Relationships"))
            .listStyle(PlainListStyle())
        }
    }
}

struct ListView_Previews: PreviewProvider {
    static var previews: some View {
        FriendshipListView()
        .environmentObject(MenuListFriendshipViewModel())
    }
}

I was trying to implement this code snippet but just don’t understand how to apply [index] to my ForEach loop.

List {
    ForEach(items.indices) { index in
        Text(items[index])
            .listRowBackground((index  % 2 == 0) ? Color(.systemBlue) : Color(.white))
    }
}