```dart
void main() {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  late StreamSubscription<DataStoreHubEvent> hubSubscription;

  // Initialize a boolean indicating if the network is up
  bool networkIsUp = false;

  // Initialize the libraries
  ...

  void observeEvents() {
    hubSubscription = Amplify.Hub.listen(HubChannel.DataStore, (hubEvent) {
      if (hubEvent.eventName == 'networkStatus') {
        final status = hubEvent.payload as NetworkStatusEvent?; 
        setState(() {
          networkIsUp = status?.active ?? false;
        });
      }
    });
  }

  // Build function and UI elements
  ...

  @override
  void dispose() {
    hubSubscription?.cancel();
    super.dispose();
  }
}
```

<Callout>

Setup your Hub Listener or Subscriber before calling Amplify.configure() to avoid missing some DataStore events.

</Callout>