check connectivity flutter for webview
import 'dart:async';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
import 'package:connectivity/connectivity.dart';
void main() => runApp(MyApp());
var connectivityResult = await (Connectivity().checkConnectivity());
await(Future<ConnectivityResult> checkConnectivity) {
}
class MyApp extends StatelessWidget {
  
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
      
        primarySwatch: Colors.yellow
      ),
      home: MyHomePage(title: 'Flutter Demooo Home Page'),
    );
  }
}
class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);
  final String title;
  @override
  _MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
  
  final Completer<WebViewController> _controller=Completer<WebViewController>();
  
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      
      body: WebView(
        if (connectivityResult == ConnectivityResult.mobile) {
  // I am connected to a mobile network.
} else if (connectivityResult == ConnectivityResult.wifi) {
  // I am connected to a wifi network.
        initialUrl: "https://google.com/",
        onWebViewCreated: (WebViewController webViewController){
          _controller.complete(webViewController);
        },}
        else{
          //i am not connected to any network
        }
      ) );
       
       
    
  }
}
