iosWebViewFix/example/lib/webview_example.screen.dart

import 'dart:async';

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

class MyInappBrowser extends InAppBrowser {
   @override
 Future onBrowserCreated() async {
   print("\n\nBrowser Ready!\n\n");
 }

 @override
 Future onLoadStart(String url) async {
   print("\n\nStarted $url\n\n");
 }

 @override
 Future onLoadStop(String url) async {
   print("\n\nStopped $url\n\n");
 }

 @override
 Future onScrollChanged(int x, int y) async {
   print("Scrolled: x:$x y:$y");
 }

 @override
 void onLoadError(String url, int code, String message) {
   print("Can't load $url.. Error: $message");
 }

 @override
 void onProgressChanged(int progress) {
   print("Progress: $progress");
 }

 @override
 void onExit() {
   print("\n\nBrowser closed!\n\n");
 }

 @override
 void shouldOverrideUrlLoading(String url) {
   print("\n\n override $url\n\n");
   this.webViewController.loadUrl(url);
 }

 @override
 void onLoadResource(
     WebResourceResponse response, WebResourceRequest request) {
   print("Started at: " +
       response.startTime.toString() +
       "ms ---> duration: " +
       response.duration.toString() +
       "ms " +
       response.url);
 }

 @override
 void onConsoleMessage(ConsoleMessage consoleMessage) {
   print(consoleMessage.message);
 }
  
}

class WebviewExampleScreen extends StatefulWidget {
  final InAppBrowser browser = new InAppBrowser();
  @override
  _WebviewExampleScreenState createState() => new _WebviewExampleScreenState();
}

class _WebviewExampleScreenState extends State<WebviewExampleScreen> {
  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return new Center(
      child: new RaisedButton(
          onPressed: ()  {
            widget.browser.open(url:"https://flutter.io/");
          },
          child: Text("Open Webview Browser")),
    );
  }
}