// // message.swift // 74 桌 // // Created by yunli on 2023/5/20. // import SwiftUI struct messageView: View { @Binding var count: Int var body: some View { List { ForEach(0 ..< count, id: \.self) { item in Text("\(item)") } Button(action: { count += 1; print(count) }) { Label("添加消息", systemImage: "plus") } } .navigationBarTitle("消息列表") } }