React NativeNetInfo
NetInfo exposes info about online/offline status
reachabilityIOS #
Asyncronously determine if the device is online and on a cellular network.
none- device is offlinewifi- device is online and connected via wifi, or is the iOS simulatorcell- device is connected via Edge, 3G, WiMax, or LTEunknown- error case and the network status is unknown
NetInfo.reachabilityIOS.fetch().done((reach) => {
console.log('Initial: ' + reach);
});
function handleFirstReachabilityChange(reach) {
console.log('First change: ' + reach);
NetInfo.reachabilityIOS.removeEventListener(
'change',
handleFirstReachabilityChange
);
}
NetInfo.reachabilityIOS.addEventListener(
'change',
handleFirstReachabilityChange
);
isConnected #
Available on all platforms. Asyncronously fetch a boolean to determine internet connectivity.
NetInfo.isConnected.fetch().done((isConnected) => {
console.log('First, is ' + (isConnected ? 'online' : 'offline'));
});
function handleFirstConnectivityChange(isConnected) {
console.log('Then, is ' + (isConnected ? 'online' : 'offline'));
NetInfo.isConnected.removeEventListener(
'change',
handleFirstConnectivityChange
);
}
NetInfo.isConnected.addEventListener(
'change',
handleFirstConnectivityChange
);