In this blog, we will discuss how we can achieve Webview in our flutter app. WebViews are mobile components where HTML content is rendered over a browser inside a mobile app. We will use the
webview_flutter plugin to show web pages in our app.
webview_flutter is a Flutter plugin. It provides a WebView widget on Android and iOS. WebView widget has the following properties.
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Properties of WebView
onWebViewCreated: This function is invoked once when the web view is created.
initialUrl: The initial URL of the web resource.
javascriptMode: It is used to enable JavaScript in the WebView.
javascriptChannels: The set of JavascriptChannels available to JavaScript code running in the WebView.
navigationDelegate: A delegate function that decides how to handle navigation actions.
onPageStarted: This function is invoked when a page starts loading.
onPageFinished: This function is invoked when a page has finished loading.
onProgress: This function invoked when a page loading started.
debuggingEnabled: It is use to Controls debugging in WebView by doing its value true but the default debuggingEnabled is false.
gestureNavigationEnabled: A Boolean value indicating whether horizontal swipe gestures will trigger back-forward list navigations. Its default value is false.
allowsInlineMediaPlayback: Inline playback of HTML5 videos controlled by this property on iOS. Android allows it by default. Its default value is false.
zoomEnabled: It indicates whether the WebView should support zooming using its on-screen zoom controls and gestures. Its default value is true.
backgroundColor: The background color of the WebView.
Step to integrate WebView in Flutter
Step-1 -> Firstly, add the webview_flutter dependency in the pubspec.yaml file.
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webview_flutter: ^4.2.3 |
Step– 2 -> Run ‘flutter pub get‘ command.
After this, we are ready to write our code.
main.dart
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import 'package:flutter/material.dart'; import 'package:webview_flutter_demo/CommonWebView.dart'; void main() { runApp(const MyApp()); } class MyApp extends StatelessWidget { const MyApp({Key? key}) : super(key: key); @override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Demo', home: const MyHomePage(title: 'Flutter WebView'), ); } } class MyHomePage extends StatefulWidget { const MyHomePage({Key? key, required this.title}) : super(key: key); final String title; @override State<MyHomePage> createState() => _MyHomePageState(); } class _MyHomePageState extends State<MyHomePage> { @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text(widget.title), ), body: Padding( padding: const EdgeInsets.all(8.0), child: Column( mainAxisAlignment: MainAxisAlignment.center, crossAxisAlignment: CrossAxisAlignment.stretch, children: [ MaterialButton( color: Colors.blue, onPressed: () { Navigator.push( context, MaterialPageRoute( builder: (context) => CommonWebView( url: "https://flutter.dev", title: "Flutter"))); }, child: Text( 'https://flutter.dev', style: TextStyle(fontSize: 16), ), ), MaterialButton( color: Colors.blue, onPressed: () { Navigator.push( context, MaterialPageRoute( builder: (context) => CommonWebView( url: "https://en.wikipedia.org/wiki/Flutter_(software)", title: "Wikipedia"))); }, child: Text( "https://en.wikipedia.org/wiki/Flutter", style: TextStyle(fontSize: 16), ), ) ], ), ), ); } } |
Webview Back Navigation:
common_webview.dart
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import 'package:flutter/material.dart'; import 'package:webview_flutter/webview_flutter.dart'; class CommonWebView extends StatefulWidget { final String url; final String title; CommonWebView({required this.url, required this.title}); @override _CommonWebViewState createState() => _CommonWebViewState(); } class _CommonWebViewState extends State<CommonWebView> { WebViewController? _controller; @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( leading: BackButton( onPressed: () { backNavigationHandler(); }, ), title: Text(widget.title), ), body: WebView( zoomEnabled: true , initialUrl: widget.url, javascriptMode: JavascriptMode.unrestricted, onWebViewCreated: (WebViewController webViewController){ _controller = webViewController; }, ) ); } } |
While running the app, you may face issue related to minSdkVersion. To solve this issue, you should correct the value of minSdkVersion in android/app/build.gradle.
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android { defaultConfig { minSdkVersion 19 } } |
The output of the code is –
Conclusion
In this blog, we have read about the WebView in Flutter.
I hope it will help you out in understanding and getting a brief idea about flutter Webview. You can also check our other blog here.
Thank you for reading!!!
2 comments
This is a simple example code to implement the Webview in Flutter app. You can do the changes in the code according to your need.
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Thanks