### Launch Fullscreen WebView with Flutter Navigation Source: https://github.com/fluttercommunity/flutter_webview_plugin/blob/master/README.md This example demonstrates how to launch a WebView that takes up the full screen, integrated with Flutter's navigation. It uses `WebviewScaffold` within a `MaterialApp`'s routes to display a specified URL with an AppBar. ```Dart new MaterialApp( routes: { "/": (_) => new WebviewScaffold( url: "https://www.google.com", appBar: new AppBar( title: new Text("Widget webview"), ), ), }, ); ``` -------------------------------- ### Flutter Webview Plugin Functions API Source: https://github.com/fluttercommunity/flutter_webview_plugin/blob/master/README.md Provides a comprehensive reference for the `flutter_webview_plugin`'s public functions, including `launch` for opening URLs with various options, `evalJavascript` for executing code, `getCookies`, `cleanCookies`, `resize`, `show`, `hide`, `reloadUrl`, `close`, `reload`, `goBack`, `goForward`, `stopLoading`, `canGoBack`, and `canGoForward`. ```APIDOC Future launch(String url, { Map headers: null, Set javascriptChannels: null, bool withJavascript: true, bool clearCache: false, bool clearCookies: false, bool hidden: false, bool enableAppScheme: true, Rect rect: null, String userAgent: null, bool withZoom: false, bool displayZoomControls: false, bool withLocalStorage: true, bool withLocalUrl: true, String localUrlScope: null, bool withOverviewMode: false, bool scrollBar: true, bool supportMultipleWindows: false, bool appCacheEnabled: false, bool allowFileURLs: false, bool useWideViewPort: false, String invalidUrlRegex: null, bool geolocationEnabled: false, bool debuggingEnabled: false, bool ignoreSSLErrors: false, }); Future evalJavascript(String code); Future> getCookies(); Future cleanCookies(); Future resize(Rect rect); Future show(); Future hide(); Future reloadUrl(String url); Future close(); Future reload(); Future goBack(); Future goForward(); Future stopLoading(); Future canGoBack(); Future canGoForward(); ``` -------------------------------- ### Launch Fullscreen WebView with Initial Loading Indicator Source: https://github.com/fluttercommunity/flutter_webview_plugin/blob/master/README.md This snippet shows how to display a custom loading indicator or a default `CircularProgressIndicator` while the WebView content is loading. By setting `hidden` to `true` and optionally providing an `initialChild` widget, you can customize the waiting experience before the page is fully loaded. ```Dart return new MaterialApp( title: 'Flutter WebView Demo', theme: new ThemeData( primarySwatch: Colors.blue, ), routes: { '/': (_) => const MyHomePage(title: 'Flutter WebView Demo'), '/widget': (_) => new WebviewScaffold( url: selectedUrl, appBar: new AppBar( title: const Text('Widget webview'), ), withZoom: true, withLocalStorage: true, hidden: true, initialChild: Container( color: Colors.redAccent, child: const Center( child: Text('Waiting.....'), ), ), ), }, ); ``` -------------------------------- ### Flutter Webview Plugin Events API Source: https://github.com/fluttercommunity/flutter_webview_plugin/blob/master/README.md Lists the available streams for monitoring webview events, such as page destruction, URL changes, state changes, scroll position changes, and errors. It also reminds users to dispose of the webview plugin. ```APIDOC onDestroy: Stream onUrlChanged: Stream onStateChanged: Stream onScrollXChanged: Stream onScrollYChanged: Stream onError: Stream // Disposal flutterWebviewPlugin.dispose() ``` -------------------------------- ### Listen for WebView URL Change Events Source: https://github.com/fluttercommunity/flutter_webview_plugin/blob/master/README.md Obtain a singleton instance of `FlutterWebviewPlugin` to listen for changes in the WebView's URL. The `onUrlChanged` stream provides the new URL as a string whenever the WebView navigates to a different page. ```Dart final flutterWebviewPlugin = new FlutterWebviewPlugin(); flutterWebviewPlugin.onUrlChanged.listen((String url) { }); ``` -------------------------------- ### Configure iOS App Transport Security for SSL Error Ignoring Source: https://github.com/fluttercommunity/flutter_webview_plugin/blob/master/README.md Explains how to configure the `Info.plist` file on iOS to allow arbitrary loads, which is necessary when `ignoreSSLErrors` is enabled in the webview plugin. This allows displaying content from servers with untrusted certificates. ```XML NSAppTransportSecurity NSAllowsArbitraryLoads NSAllowsArbitraryLoadsInWebContent ``` -------------------------------- ### Launch WebView in Hidden Mode Source: https://github.com/fluttercommunity/flutter_webview_plugin/blob/master/README.md Launch a WebView instance without immediately displaying it on the screen. By setting the `hidden` parameter to `true` in the `launch` method, the WebView loads its content in the background, which can be useful for pre-loading or specific UI flows. ```Dart final flutterWebviewPlugin = new FlutterWebviewPlugin(); flutterWebviewPlugin.launch(url, hidden: true); ``` -------------------------------- ### Configure iOS Info.plist for App Transport Security Source: https://github.com/fluttercommunity/flutter_webview_plugin/blob/master/README.md To ensure the WebView plugin functions correctly on iOS, you need to add App Transport Security (ATS) exceptions to your `Info.plist` file. This configuration allows arbitrary loads for web content, supporting both iOS 9 (`NSAllowsArbitraryLoads`) and iOS 10+ (`NSAllowsArbitraryLoadsInWebContent`). ```XML NSAppTransportSecurity NSAllowsArbitraryLoads NSAllowsArbitraryLoadsInWebContent ``` -------------------------------- ### Launch WebView within Custom Bounding Box Source: https://github.com/fluttercommunity/flutter_webview_plugin/blob/master/README.md Display the WebView within a specific rectangular region on the screen instead of fullscreen. By setting `fullScreen` to `false` and providing a `Rect` object with `fromLTWH` coordinates, you can precisely control the WebView's size and position within your Flutter layout. ```Dart final flutterWebviewPlugin = new FlutterWebviewPlugin(); flutterWebviewPlugin.launch(url, fullScreen: false, rect: new Rect.fromLTWH( 0.0, 0.0, MediaQuery.of(context).size.width, 300.0, ), ); ``` -------------------------------- ### Injecting Custom JavaScript into Flutter Webview Source: https://github.com/fluttercommunity/flutter_webview_plugin/blob/master/README.md Demonstrates how to inject JavaScript code into a webview after the page has finished loading. It shows how to load a large JavaScript file from assets and execute it using `evalJavascript` when the `finishLoad` state is reached. ```Dart Future loadJS(String name) async { var givenJS = rootBundle.loadString('assets/$name.js'); return givenJS.then((String js) { flutterWebViewPlugin.onStateChanged.listen((viewState) async { if (viewState.type == WebViewState.finishLoad) { flutterWebViewPlugin.evalJavascript(js); } }); }); } ``` -------------------------------- ### Close an Active WebView Instance Source: https://github.com/fluttercommunity/flutter_webview_plugin/blob/master/README.md Programmatically close the currently launched WebView instance. This method releases the resources associated with the WebView, ensuring proper cleanup when it's no longer needed. ```Dart flutterWebviewPlugin.close(); ``` -------------------------------- ### Listen for WebView Scroll Position Changes Source: https://github.com/fluttercommunity/flutter_webview_plugin/blob/master/README.md Monitor vertical and horizontal scroll position changes within the WebView using `onScrollYChanged` and `onScrollXChanged` streams. These streams provide the latest offset values (double), allowing you to react to user scrolling behavior. Note there might be slight differences in scroll distance values between iOS and Android. ```Dart final flutterWebviewPlugin = new FlutterWebviewPlugin(); flutterWebviewPlugin.onScrollYChanged.listen((double offsetY) { // latest offset value in vertical scroll // compare vertical scroll changes here with old value }); flutterWebviewPlugin.onScrollXChanged.listen((double offsetX) { // latest offset value in horizontal scroll // compare horizontal scroll changes here with old value }); ``` === COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.