provider: ^4.0.0 Flutter Performance refreshing

[q876625596]

After upgrading provider ^ 4.0.0, Flutter Performance keeps refreshing even without any operation.

[mono0926]

I also confirmed this problem.
It is reproduced at https://github.com/rrousselGit/provider/tree/master/packages/provider/example, and I suspect that all applications which uses provider 4.0.0 are affected this problem.

There were no problems at version 3.2.0:
https://github.com/rrousselGit/provider/tree/v3.2.0/packages/provider/example

[rrousselGit]

What are you talking about by performance keepks refreshing?

[mono0926]

@rrousselGit

This refreshing started moving after upgrading to 4.0.0 on my project and example.

[q876625596]

您在谈论什么让性能刷新呢？

ChangeNotifierProvider.value(
      value: value,
      child: Consumer(
        builder: (BuildContext context, S data, Widget child) {
          return Container();
        },
      ),
    )

I just added this code and did nothing.

[isanimu]

I also confirmed this.

Even with this simple code

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MultiProvider(
      providers: [
        StreamProvider<String>.value(
          value: Stream.empty(),
        ),
      ],
      child: MaterialApp(
        title: '',
        home: Container(),
      ),
    );
  }
}

Crazy high cpu usage by iOS Simulator.

[rrousselGit]

Ah that's actually a misuse of SchedulerBinding to infer if the listen flag of Provider.of

It's actually a fairly critical bug, and I'll have to disable that inference and make a hot-fix

[Peng-Qian]

I still have this issue after changing the .yaml file to 'provider: ^4.0.0-hotfix.1' , is this the proper way to get the updates?

[rrousselGit]

Make sure you ran pub get and that the lock file correctly says it uses the hot fix version

[Peng-Qian]

Make sure you ran pub get and that the lock file correctly says it uses the hot fix version

it worked, many thx

[isanimu]

@pqsky7

I still have this issue after changing the .yaml file to 'provider: ^4.0.0-hotfix.1' , is this the proper way to get the updates?

Something like this should work. Once the newest version is released you can remove the overrides.

dependencies:
  provider: ^4.0.0

dependency_overrides:
  provider: 4.0.0-hotfix.1

[rrousselGit]

A 4.0.1 is coming in a matter of minutes.

Which means ^4.0.0 will properly get the new version

[eggzotic]

Great thx - was hunting down the cause of this issue for last few days also. Really killed my dev env when running 2 emulators. Provider had always behaved so well before this. Great to have it back to normal again :-)