Created
December 2, 2022 08:02
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NetworkStatusWrapper
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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; | |
}, | |
); | |
} | |
} |
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