SwiftUI -从一个视图更改@Published变量，并将其反映到另一个视图上

import SwiftUI
import Combine

class MyData: ObservableObject {
    @Published var value: String = ""
}

struct ContentView: View {
    @ObservedObject var data = MyData()
    
    var body: some View {
        VStack {
            TextField("Enter value", text: $data.value)
            Button("Update") {
                // 更新value的值
                data.value = "New Value"
            }
        }
    }
}

struct DetailView: View {
    @ObservedObject var data: MyData
    @State private var detailValue: String = ""
    
    var body: some View {
        VStack {
            Text("Value: \(data.value)")
            TextField("Enter detail value", text: $detailValue)
            Button("Update") {
                // 更新value的值
                data.value = detailValue
            }
        }
    }
}