FLUTTERE DA İNTERNET KONTROLÜ ÖRNEK UYGULAMA.

import 'dart:async';
import 'package:connectivity_plus/connectivity_plus.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key});

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  final Connectivity _connectivity = Connectivity();
  ConnectivityResult _connectivityStatus = ConnectivityResult.none;
  late StreamSubscription<ConnectivityResult> _streamSubscription;

  @override
  void initState() {
    _initconnectivity();
    _streamSubscription =
        _connectivity.onConnectivityChanged.listen(_updateConnectionStatus);
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    if (_connectivityStatus == ConnectivityResult.wifi) {
      return Scaffold(
        body: Center(
          child: Text(
            "BAĞLANTI SAĞLANDI",
            textAlign: TextAlign.center,
            style: TextStyle(
              fontSize: 20,
              fontWeight: FontWeight.bold,
            ),
          ),
        ),
      );
    } else {
      return Scaffold(
        body: Center(
          child: Text(
            "BAĞLANTI SAĞLANAMADI",
            textAlign: TextAlign.center,
            style: TextStyle(
              fontSize: 20,
              fontWeight: FontWeight.bold,
            ),
          ),
        ),
      );
    }
  }

  Future<void> _initconnectivity() async {
    late ConnectivityResult result;
    try {
      result = await _connectivity.checkConnectivity();
    } on PlatformException catch (e) {
      print(e.message);
    }
    return _updateConnectionStatus(result);
  }

  Future<void> _updateConnectionStatus(ConnectivityResult result) async {
    setState(() {
      _connectivityStatus = result;
      print(result.name.toString());
    });
  }
}