online static method
Implementation
static Future<bool> online() async {
bool online;
try {
final List<InternetAddress> result =
await InternetAddress.lookup('google.com');
if (result.isNotEmpty && result[0].rawAddress.isNotEmpty) {
online = true;
} else {
online = false;
}
} on SocketException catch (_) {
online = false;
}
return online;
}