[英]iOS: NetInfo.isConnected returns always false
netInfo
React Native在ios模拟器中始终返回false
NetInfo.isConnected.fetch().then(isConnected => {
if (isConnected == true) {
this.setState({isOnline: true})
this.checkForToken()
}
else {
this.setState({isOnline: false})
this.checkTokenOffline()
}
});
NetInfo.isConnected.fetch().then().done(() => {
NetInfo.isConnected.addEventListener('connectionChange', (isConnected) => this.dispatchConnected());
})
这是一个已知的错误 ,它总是给出错误。 您需要附加一个侦听器并使用它。
yourFunction = () => {
NetInfo.isConnected.fetch().then(isConnected => {
//Always false, so ignore/do nothing here
});
NetInfo.isConnected.addEventListener(
'connectionChange',
this.handleFirstConnectivityChange
);
}
handleFirstConnectivityChange = (isConnected) => {
if (isConnected == true) {
this.setState({isOnline: true})
this.checkForToken()
}
else {
this.setState({isOnline: false})
this.checkTokenOffline()
}
}
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