#ObservedObject does not get updated - ios

Question

I'm trying to update a view with a simple Observable pattern, but it doesn't happen for some reason. The Publisher gets updated, but the subscriber doesn't. I've simplified to the code below. When you click the Add button, the view doesn't get updated and also the variable.
I'm using this function (NetworkManager.shared.saveNew()), because I update after a CloudKit notification. If you know a workaround, I'd be pleased to know!
import SwiftUI
import Combine
public class NetworkManager: ObservableObject {
static let shared = NetworkManager()
#Published var list = [DataSource]()
init() {
self.list = [DataSource(id: "Hello", action: [1], link: "http://hello.com", year: 2020)]
}
func saveNew(item: DataSource) {
self.list.append(item)
}
}
struct DataSource: Identifiable, Codable {
var id: String
var action: [Int]
var link: String
var year: Int
init(id: String, action: [Int], link: String, year: Int) {
self.id = id
self.action = action
self.link = link
self.year = year
}
}
struct ContentView: View {
#ObservedObject var list = NetworkManager()
var body: some View {
VStack {
Button("Add") {
NetworkManager.shared.saveNew(item: DataSource(id: "GoodBye", action: [1], link: "http://goodbye", year: 2030))
}
List(list.list, id:\.id) { item in
Text(item.id)
}
}
}
}

Answer 1

It should be used same instance of NetworkManager, so here is fixed variant (and better to name manager as manager but not as list)
struct ContentView: View {
#ObservedObject var manager = NetworkManager.shared // << fix !!
var body: some View {
VStack {
Button("Add") {
self.manager.saveNew(item: DataSource(id: "GoodBye", action: [1], link: "http://goodbye", year: 2030))
}
List(manager.list, id:\.id) { item in
Text(item.id)
}
}
}
}