I'm trying to use @EnvironmentObject to update the Boolean values in the ViewModel. So when I navigate back to the original screen I want the boolean values to have change and therefore changing the text. Tried this with ObservedObject too. This is not working or can not find a way for ContentView to redraw itself upon change.
import SwiftUI
class Global: ObservableObject {
@Published var change = [false, false]
}
struct ContentView: View {
var body: some View {
NavigationView {
VStack {
NewView().environmentObject(Global())
}
}
}
}
struct NewView: View {
@EnvironmentObject var env: Global
var body: some View {
Text(env.change[1] ? "WORKS" : "DOESNT WORK")
NavigationLink(destination: ChangeThis().environmentObject(Global())) {
Text("Push Me to Change")
}
}
}
struct ChangeThis: View {
@EnvironmentObject var env: Global
var body: some View {
Button(action: {
env.change[0] = true
env.change[1] = true
}) {
Text(" Want this to Changes the Boolean values in Global and update NewView with those values after clicking back")
}
}
}
You need to use the same instance of the Global
EnvironmentObject in all your views:
struct NewView: View {
@EnvironmentObject var env: Global
...
// pass the already-existing instance, don't create a new one
NavigationLink(destination: ChangeThis().environmentObject(env)
...
}