How to get current Url in Flutter WebView

Working with Flutter webview can be easy but in some situations you might what to get the display web page url. Consider when you want to make sure that the loaded url is from a particular domain.

We are going to use flutter webview community plugin. If you have done this using default flutter webview and consider sharing your code kindly use the comment below.

You can use this code example in your project rather than reinventing the wheel.

Lets start by add the flutter webview plugin in our project pubspec.yaml file.

1. Add flutter_webview plugin in pubspec.yaml

name: flutter_app
description: A new Flutter application.

# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# Read more about versioning at semver.org.
version: 1.0.0+1

environment:
  sdk: ">=2.0.0-dev.68.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^0.1.2
  http: 0.12.0
  ##sqflite: 0.13.0+1
  path_provider: 0.4.1
  ##zoomable_image: 1.2.1+1
  ##multi_image_picker: 2.3.32
  dio: 2.0.22
  shared_preferences: 0.4.3
  flare_flutter: any
  flutter_webview_plugin: 0.3.0+2
  webview_flutter: 0.2.0


dev_dependencies:
  flutter_test:
    sdk: flutter


# For information on the generic Dart part of this file, see the
# following page: https://www.dartlang.org/tools/pub/pubspec

# The following section is specific to Flutter.
flutter:

  # The following line ensures that the Material Icons font is
  # included with your application, so that you can use the icons in
  # the material Icons class.
  uses-material-design: true

  assets:
    - assets/html_code.html
    - assets/iframe.html
    - assets/js_lib.html


  # To add assets to your application, add an assets section, like this:
  # assets:
  #  - images/a_dot_burr.jpeg
  #  - images/a_dot_ham.jpeg

  # An image asset can refer to one or more resolution-specific "variants", see
  # https://flutter.io/assets-and-images/#resolution-aware.

  # For details regarding adding assets from package dependencies, see
  # https://flutter.io/assets-and-images/#from-packages

  # To add custom fonts to your application, add a fonts section here,
  # in this "flutter" section. Each entry in this list should have a
  # "family" key with the font family name, and a "fonts" key with a
  # list giving the asset and other descriptors for the font. For
  # example:
  # For details regarding fonts from package dependencies,
  # see https://flutter.io/custom-fonts/#from-packages

2. Create main.dart if it does not already exist

This is the entry point of our application. Open the file and add the code below.

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

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

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      home: GetCurrentURLWebView(),
    );
  }
}

In the above code, the new dart class we will create later is assigned to the home property of the MaterialAppwidget. Lets create get_current_url.dart file.

3. Create get_current_url.dart in lib folder

Create a new dart file in the lib directory. I will name mine get_current_url.dart. You can use a filename of your choice.

import 'dart:async';

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

class GetCurrentURLWebView extends StatefulWidget {
  @override
  GetCurrentURLWebViewState createState() {
    return new GetCurrentURLWebViewState();
  }
}

class GetCurrentURLWebViewState extends State<GetCurrentURLWebView> {
  final flutterWebviewPlugin = new FlutterWebviewPlugin();
  GlobalKey<ScaffoldState> scaffoldKey = GlobalKey<ScaffoldState>();

  StreamSubscription<String> _onUrlChanged;

  @override
  void initState() {
    super.initState();

    _onUrlChanged = flutterWebviewPlugin.onUrlChanged.listen((String url) {
      if (mounted) {
        print("Current URL: $url");
      }
    });
  }

  @override
  void dispose() {
    _onUrlChanged.cancel();
    flutterWebviewPlugin.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return WebviewScaffold(
      key: scaffoldKey,
      url: 'https://inducesmile.com',
      hidden: true,
      appBar: AppBar(title: Text("Current Url")),
    );
  }
}

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