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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
The text was updated successfully, but these errors were encountered:
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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 tonone
as the reported connectivity type. Switching to other connectivity types (wifi/airplane mode) and then back to a cellular connection then always reportsnone
as the connectivity type. I would expect that it would always reportcell
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
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
The text was updated successfully, but these errors were encountered: