NetworkStatusWrapper

network_status_wrapper.dart

import 'package:connectivity_plus/connectivity_plus.dart';
import 'package:flutter/material.dart';
import 'package:ismile/widgets/network/network_connectivity.dart';

enum NetworkStatus { offline, online }

@immutable
class NetworkStatusWrapper extends StatefulWidget {
  const NetworkStatusWrapper({
    super.key,
    required this.child,
  });

  final Widget child;

  @override
  State<NetworkStatusWrapper> createState() => _NetworkStatusWrapperState();
}

class _NetworkStatusWrapperState extends State<NetworkStatusWrapper> {
  final _networkConnectivity = NetworkConnectivity.instance;
  var _source = {ConnectivityResult.none: false};
  late NetworkStatus _networkStatus;

  @override
  void initState() {
    super.initState();
    _networkConnectivity.init();
    _networkConnectivity.networkStream.listen((source) {
      _source = source;
      switch (_source.keys.toList().first) {
        case ConnectivityResult.mobile:
          _networkStatus = _source.values.toList().first //
              ? NetworkStatus.online
              : NetworkStatus.offline;
          break;
        case ConnectivityResult.wifi:
          _networkStatus = _source.values.toList().first //
              ? NetworkStatus.online
              : NetworkStatus.offline;
          break;
        case ConnectivityResult.none:
        default:
          _networkStatus = NetworkStatus.offline;
      }
      setState(() {});
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text(
            string,
            style: const TextStyle(fontSize: 30),
          ),
        ),
      );
    });
  }

  @override
  void dispose() {
    _networkConnectivity.disposeStream();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) => widget.child;
}




@immutable
class NetworkStatusWrapper extends StatefulWidget {
  const NetworkStatusWrapper({
    super.key,
    required this.child,
    required this.errorWidget,
  });

  final Widget child;
  final Widget Function(String message) errorWidget;

  @override
  State<NetworkStatusWrapper> createState() => _NetworkStatusWrapperState();
}

class _NetworkStatusWrapperState extends State<NetworkStatusWrapper> {
  late final Stream<NetworkStatus> _networkStatus;

  @override
  void initState() {
    super.initState();
    _networkStatus = NetworkStatusService().networkStatusController.stream;
  }

  @override
  Widget build(BuildContext context) {
    return StreamBuilder<NetworkStatus>(
      stream: _networkStatus,
      builder: (context, snapshot) {
        if (snapshot.hasError) {
          return widget.errorWidget(snapshot.error.toString());
        }
        if (snapshot.data == NetworkStatus.offline) {
          WidgetsBinding.instance.addPostFrameCallback((_) {
            ScaffoldMessenger.of(context).showSnackBar(
              const SnackBar(
                content: Text('No Internet :('),
                duration: Duration(seconds: 3),
              ),
            );
          });
        }
        return widget.child;
      },
    );
  }
}