如何在一个`ForEach`中只选择一个按钮？

struct ContentView: View {
    struct Item: Identifiable {
        let id = UUID()
        let title: String
    }
    
    @State private var selectedButton: Item?
    
    let items = [
        Item(title: "Button 1"),
        Item(title: "Button 2"),
        Item(title: "Button 3")
    ]
    
    var body: some View {
        VStack {
            ForEach(items) { item in
                Button(action: {
                    selectedButton = item
                }) {
                    Text(item.title)
                        .foregroundColor(selectedButton == item ? .red : .blue)
                }
            }
        }
    }
}

struct ContentView: View {
    struct Item: Identifiable {
        let id = UUID()
        let title: String
        var isSelected = false
    }
    
    @State private var items = [
        Item(title: "Button 1"),
        Item(title: "Button 2"),
        Item(title: "Button 3")
    ]
    
    var body: some View {
        VStack {
            ForEach(items) { item in
                Toggle(isOn: $items[getIndex(for: item)].isSelected) {
                    Text(item.title)
                        .foregroundColor(item.isSelected ? .red : .blue)
                }
            }
        }
    }
    
    private func getIndex(for item: Item) -> Int {
        guard let index = items.firstIndex(where: { $0.id == item.id }) else {
            fatalError("Item not found")
        }
        return index
    }
}