iOS: NetInfo.isConnected returns always false

[rkostrab]

I am currently running RN 0.28.0...

NetInfo.isConnected.fetch().then(isConnected => {
      // variable isConnected is always false
    });

I would do a PR but I can't code for iOS.

[hithacker]

I can also reproduce this with RN 0.29.0. I was running on 0.26.2 earlier and it worked fine with it. Going to try building from source and debug.

[lixiaolihua]

+1

[ryankask]

I've reported the same issue before: #8469

Quick workaround is to add an event handler NetInfo.isConnected.addEventListener('change', Function.prototype)

[thorbenandresen]

+1 and same issue with NetInfo.fetch().done() - always returns unknown

[knowbody]

I solved it this way:

componentDidMount() {
  const dispatchConnected = isConnected => this.props.dispatch(setIsConnected(isConnected));

  NetInfo.isConnected.fetch().then().done(() => {
    NetInfo.isConnected.addEventListener('change', dispatchConnected);
  });
}

[Hamiltontx]

+1

[lincwee]

we have found this bug in 0.29.2..

[EastLee]

we have found this bug in 0.28

[rkostrab]

0.30.0 still not working

[ryankask]

The relevant code hasn't changed so it makes sense that it's still not working.

Note that I previously reported the bug here: #8469 where it details the cause and has sample code attached. Because of this, I think it makes sense to leave this closed.

The number of open RN issues grows daily so it's important to do our part and consolidate where possible.

[AdityaAthavale]

I noted the same Issue today

[uc-spr]

I am using 0.30.0 version , And i'm also found this error.

[xing-zheng]

the same issue to me, I am using RN@0.30.0 and the fetch always return unknown.

But we can use addEventListener instead.

NetInfo.addEventListener('change',
    (networkType)=> {
        this.setState({networkType})
    }
)

instead of:

NetInfo.fetch().done(
    (networkType)=> {
        this.setState({networkType})
    }
)