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NetInfo not reporting cellular connection type on Physical iPhone #13579

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Eptis opened this issue Apr 19, 2017 · 1 comment
Closed

NetInfo not reporting cellular connection type on Physical iPhone #13579

Eptis opened this issue Apr 19, 2017 · 1 comment
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Resolution: Locked This issue was locked by the bot.

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@Eptis
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Eptis commented Apr 19, 2017

Description

I'm using NetInfo to determine if a user is connected to cellular, wifi or is offline. In the specific case of cellular, I only see it report cell after a fresh install of the application but after a second or so immediately switch to none as the reported connectivity type. Switching to other connectivity types (wifi/airplane mode) and then back to a cellular connection then always reports none as the connectivity type. I would expect that it would always report cell if i'm connected over a cellular connection. I double checked the cellular connection and I'm perfectly able to navigate the web using the cellular connection.

Reproduction Steps and Sample Code

// Using a physical iPhone 5C
// index.ios.js
componentWillMount() {
    NetInfo.addEventListener('change', type => {
      this.setState({connectionTypes: [type, ...this.state.connectionTypes]})
    })
    NetInfo.fetch().done((type) => {
      this.setState({connectionTypes: [type, ...this.state.connectionTypes]})
    });
  }

// debug logs from logging the value from RCTNetInfo.m
2017-04-19 13:37:36.441607+0200 testApp[434:45758] Value of string is wifi
2017-04-19 13:37:40.847758+0200 testApp[434:45758] Value of string is wifi
// Turn off Wi-Fi
2017-04-19 13:37:40.857796+0200 testApp[434:45758] Value of string is cell
2017-04-19 13:37:41.236509+0200 testApp[434:45758] Value of string is cell
2017-04-19 13:37:44.287310+0200 testApp[434:45758] Value of string is none
2017-04-19 13:38:22.312907+0200 testApp[434:45758] Value of string is none
// Turn on Wi-Fi
2017-04-19 13:38:22.314427+0200 testApp[434:45758] Value of string is wifi
2017-04-19 13:38:22.418884+0200 testApp[434:45758] Value of string is wifi
// Turn off Wi-Fi
2017-04-19 13:38:26.224729+0200 testApp[434:45758] Value of string is none
2017-04-19 13:38:26.225849+0200 testApp[434:45758] Value of string is none
2017-04-19 13:38:29.342270+0200 testApp[434:45758] Value of string is none
// Turn on Wi-Fi
2017-04-19 13:38:32.915707+0200 testApp[434:45758] Value of string is wifi
2017-04-19 13:38:32.999602+0200 testApp[434:45758] Value of string is wifi
// Turn off Wi-Fi
2017-04-19 13:38:36.066518+0200 testApp[434:45758] Value of string is none
2017-04-19 13:38:36.067376+0200 testApp[434:45758] Value of string is none

Basically boot the app, setup the event listener and then start turning the Wi-Fi on and off.

Solution

Not sure about this, but maybe something is going wrong with the events being dispatched by the observing ObjC code in RCTNetInfo?

Additional Information

  • React Native version: 0.43.3
  • Platform: iOS 10.3.1
  • Development Operating System: macOS Sierra
  • Dev tools: Xcode
@hramos
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hramos commented Jul 25, 2017

Hi there! This issue is being closed because it has been inactive for a while. Maybe the issue has been fixed in a recent release, or perhaps it is not affecting a lot of people. Either way, we're automatically closing issues after a period of inactivity. Please do not take it personally!

If you think this issue should definitely remain open, please let us know. The following information is helpful when it comes to determining if the issue should be re-opened:

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If you would like to work on a patch to fix the issue, contributions are very welcome! Read through the contribution guide, and feel free to hop into #react-native if you need help planning your contribution.

@hramos hramos added the Icebox label Jul 25, 2017
@hramos hramos closed this as completed Jul 25, 2017
@facebook facebook locked as resolved and limited conversation to collaborators Jul 25, 2018
@react-native-bot react-native-bot added the Resolution: Locked This issue was locked by the bot. label Jul 25, 2018
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