How To Open Web Page Url In Webview Using Flutter App

dependencies:
  flutter:
    sdk: flutter
  webview_flutter: 0.2.0
  flutter_webview_plugin: 0.3.0+2

flutter pub get

import 'package:flutter/material.dart';
import 'package:flutter_webview_plugin/flutter_webview_plugin.dart';
void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Flutter Demo',
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  TextEditingController _textController =
  TextEditingController(text: 'https://');
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Colors.orange,
          title: Text("Open Web Page URL in webview"
          )),
      body: Center(
          child: Column(
            children: <Widget>[
              Padding(
                padding: const EdgeInsets.all(20.0),
                child: TextField(
                  controller: _textController,
                ),
              ),
              RaisedButton(
                textColor: Colors.white,
                child: Text("Goto Webpage"),
                color: Colors.orange,
                onPressed: () {
                  Navigator.of(context).push(
                      MaterialPageRoute<Null>(builder: (BuildContext context) {
                        return new WebViewWebPage(url: _textController.text);
                      }));
                },
              ),
            ],
          )),
    );
  }
}

class WebViewWebPage extends StatelessWidget {
  final String url;

  WebViewWebPage({this.url});

  @override
  Widget build(BuildContext context) {
    return WebviewScaffold(
      url: url,
      hidden: true,
      appBar: AppBar(
        backgroundColor: Colors.deepOrangeAccent,
          title: Text("Open Web Page Url In Webview")),
    );
  }
}