[connectivity_plus] "onConnectivityChanged" having troubles on receiving results

[theiskaa]

I have problems with listening to the connectivity state changing.

Steps to reproduce issue:

• Open the app with wifi network
• Then turn off wifi (Stream will receive the connectivity result)
• And then turn on the wifi app won't receive the connectivity result again.

And I tried just printing the results. But also it wasn't receive the connectivity results.

Screen.Recording.2021-10-01.at.22.51.51.mov

[loud-at-heart]

@theiskaa can I take up this task

[theiskaa]

@loud-at-heart Sure thing.

[ralphvmo]

Sometime it happens. But the problem that I face is that when I turn on the wifi then the connectivity result is none and vice versa when I turn off the wifi, the connectivity result is wifi. Does that library work like this or this is a bug ?

[LukaGiorgadze]

@theiskaa I think it would be nice if you post the code so everyone can reproduce this bug.

[theiskaa]

Here it is:

Code

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  bool isConnected = true;

  late StreamSubscription connectivityStream;

  void setConnectivitySubscription() {
    connectivityStream = Connectivity().onConnectivityChanged.listen(
      (ConnectivityResult result) {
        setState(() {
          isConnected = (result != ConnectivityResult.none);
        });
      },
    );
  }

  @override
  void initState() {
    super.initState();
    setConnectivitySubscription();
  }

  @override
  void dispose() {
    connectivityStream.cancel();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text(widget.title)),
      body: Center(
        child: Text(
          isConnected ? 'Connected' : 'No connection',
          style: Theme.of(context).textTheme.headline4,
        ),
      ),
    );
  }
}

[alexbatalov]

This is a pretty old bug that only affects simulator. See ashleymills/Reachability.swift#151. I have tested both Reachability.swift and NWPathMonitor and they both report changes in host Wi-Fi incorrectly. Both work fine on physical devices. Guess we should note that in docs.

[LukaGiorgadze]

This is a pretty old bug that only affects simulator. See ashleymills/Reachability.swift#151. I have tested both Reachability.swift and NWPathMonitor and they both report changes in host Wi-Fi incorrectly. Both work fine on physical devices. Guess we should note that in docs.

Absolutely agree, this should be noted in docs to avoid such confusions.

[miquelbeltran]

Documentation has been updated. Do we need to keep this ticket open?

[LukaGiorgadze]

Thanks @miquelbeltran , i think we can close an issue.

[faisalmushtaq007]

I am having same issue, i test app on ios simulator and it shows ConnectivityResult.none even though my wifi is connected.
Please i need a solution for this

[Sun3]

Any updates? This issue is still happening.

Thanks.