使用EnvironmentObject更新现有列表

import SwiftUI
import Combine

class ListData: ObservableObject {
    @Published var items: [String] = ["Item 1", "Item 2", "Item 3"]
}

import SwiftUI

struct ContentView: View {
    @EnvironmentObject var listData: ListData
    
    var body: some View {
        List {
            ForEach(listData.items, id: \.self) { item in
                Text(item)
            }
        }
    }
}

import SwiftUI

struct ContentView: View {
    @EnvironmentObject var listData: ListData
    
    var body: some View {
        VStack {
            List {
                ForEach(listData.items, id: \.self) { item in
                    Text(item)
                }
            }
            
            Button(action: {
                listData.items.append("New Item")
            }) {
                Text("Add Item")
            }
        }
    }
}