checkConnection.dart

import 'package:flutter/material.dart';
import 'package:internet_connection_checker/internet_connection_checker.dart';

class CheckConnection extends StatefulWidget {
  @override
  _CheckConnectionState createState() => _CheckConnectionState();
}

class _CheckConnectionState extends State<CheckConnection> {
  @override
  Widget build(BuildContext context) {
    return FutureBuilder(
      future: InternetConnectionChecker().hasConnection,
      builder: (BuildContext context, AsyncSnapshot<bool> connected) {
        if (!connected.hasData) {
          return ListTile(
            leading: Icon(
              Icons.circle,
              color: Colors.grey,
            ),
            title: CircularProgressIndicator(),
          );
        } else {
          return ListTile(
            leading: Icon(
              Icons.circle,
              color: (connected.data!) ? Colors.green : Colors.red,
            ),
            title:
                (connected.data!) ? Text('Connected') : Text('Not Connected'),
          );
        }
      },
    );
  }
}