SwiftUI删除和移动功能

import SwiftUI

struct ContentView: View {
    @State private var items = ["Item 1", "Item 2", "Item 3"]

    var body: some View {
        NavigationView {
            List {
                ForEach(items.indices, id: \.self) { index in
                    Text(items[index])
                        .padding()
                        .background(Color.white)
                        .cornerRadius(8)
                        .overlay(
                            Button(action: {
                                items.remove(at: index)
                            }) {
                                Image(systemName: "trash")
                                    .foregroundColor(.red)
                            }
                            .padding(.trailing, 8)
                        )
                }
            }
            .listStyle(InsetGroupedListStyle())
            .navigationTitle("Items")

            Button(action: {
                // 示例：移动第一个元素到末尾
                if items.count > 1 {
                    let firstItem = items.removeFirst()
                    items.append(firstItem)
                }
            }) {
                Text("Move First Item to End")
                    .foregroundColor(.blue)
            }
            .padding()
        }
    }
}

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

Button(action: {
    items.remove(at: index) // 确保 items 是 @State 变量
}) {
    Image(systemName: "trash")
        .foregroundColor(.red)
}

Button(action: {
    if items.count > 1 {
        let firstItem = items.removeFirst()
        items.append(firstItem)
    }
}) {
    Text("Move First Item to End")
        .foregroundColor(.blue)
}