未使用动态content SwiftUI正确更新ForEach

import SwiftUI

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

    var body: some View {
        VStack {
            ForEach(items.indices, id: \.self) { index in
                Text(items[index])
                    .padding()
                    .background(Color.gray.opacity(0.2))
                    .cornerRadius(8)
            }
        }
        .padding()
        .onAppear {
            // 模拟数据更新
            DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
                self.items.append("Item \(self.items.count + 1)")
            }
        }
    }
}

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