Webview in Flutter Example

You can see FULL SECTION this article in this http://camellabs.com/webview-in-flutter-example/.

The Example will show about webview in flutter example. This article will creating a simple application using Flutter embed webview. You can try this tutorial about flutter login example step by step. You can read other article with flutter in this section :

• Create Navigation Drawer in Fluter
• How To Create Listview in Flutter Dynamic

First, we must create a project using Visual Studio Code software. Here’s how to create a new project using Visual Studio Code:

1. Invoke View > Command Palette.
2. Type “flutter”, and select the Flutter: New Project.
3. Enter a project name, such as “webview”, and press Enter.
4. Create or select the parent directory for the new project folder.
5. Wait for project creation to complete and the main.dart file to appear.

This example using webview flutter plugin webview_flutter: ^0.3.3. Edit file pubspec.yaml in your directory should look something like and then update webview flutter package.

name: webview
description: A new Flutter project.
# 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.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 1.0.0+1
environment:
  sdk: ">=2.1.0 <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
  webview_flutter: ^0.3.3
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
  # 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.dev/assets-and-images/#resolution-aware.
  # For details regarding adding assets from package dependencies, see
  # https://flutter.dev/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:
  # fonts:
  #   - family: Schyler
  #     fonts:
  #       - asset: fonts/Schyler-Regular.ttf
  #       - asset: fonts/Schyler-Italic.ttf
  #         style: italic
  #   - family: Trajan Pro
  #     fonts:
  #       - asset: fonts/TrajanPro.ttf
  #       - asset: fonts/TrajanPro_Bold.ttf
  #         weight: 700
  #
  # For details regarding fonts from package dependencies,
  # see https://flutter.dev/custom-fonts/#from-packages

You must use flutter webview container for custom widget, create file with name web_view_container.dart like below :

import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
class WebViewContainer extends StatefulWidget {
  final url;
  WebViewContainer(this.url);
  @override
  createState() => _WebViewContainerState(this.url);
}
class _WebViewContainerState extends State<WebViewContainer> {
  var _url;
  final _key = UniqueKey();
  _WebViewContainerState(this._url);
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(),
        body: Column(
          children: [
            Expanded(
                child: WebView(
                    key: _key,
                    javascriptMode: JavascriptMode.unrestricted,
                    initialUrl: _url))
          ],
        ));
  }
}

We need Home Screen to show single button that opens a URL. Create file with name Home.dart and you can put your link in this file.

import 'package:flutter/material.dart';
import 'web_view_container.dart';
class Home extends StatelessWidget {
  final _links = ['https://camellabs.com'];
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        body: SafeArea(
            child: SingleChildScrollView(
                child: Column(
      mainAxisAlignment: MainAxisAlignment.center,
      crossAxisAlignment: CrossAxisAlignment.stretch,
      children: _links.map((link) => _urlButton(context, link)).toList(),
    ))));
  }
  Widget _urlButton(BuildContext context, String url) {
    return Container(
        padding: EdgeInsets.all(20.0),
        child: FlatButton(
          color: Theme.of(context).primaryColor,
          padding: const EdgeInsets.symmetric(horizontal: 50.0, vertical: 15.0),
          child: Text(url),
          onPressed: () => _handleURLButtonPress(context, url),
        ));
  }
  void _handleURLButtonPress(BuildContext context, String url) {
    Navigator.push(context,
        MaterialPageRoute(builder: (context) => WebViewContainer(url)));
  }
}

And then modify file main.dart to completed like below :

import 'package:flutter/material.dart';
import 'home.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Web Views',
      theme: ThemeData(
          primarySwatch: Colors.blue,
          fontFamily: "Arial",
          textTheme: TextTheme(
              button: TextStyle(color: Colors.white, fontSize: 18.0),
              title: TextStyle(color: Colors.red))),
      home: Home(),
    );
  }
}

After finish copy the main.dart, runing application and will show output :

You can see webview in flutter example in Here.

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