A Flutter plugin that allows you to add an inline webview, to use an headless webview, and to open an in-app browser window.
minSdkVersion 17
and add support for androidx
(see AndroidX Migration to migrate an existing app)--ios-language swift
, Xcode version >= 11
If you’re running an application and need to access the binary messenger before runApp()
has been called (for example, during plugin initialization), then you need to explicitly call the WidgetsFlutterBinding.ensureInitialized()
first.
An example:
void main() {
// it should be the first line in main method
WidgetsFlutterBinding.ensureInitialized();
// rest of your app code
runApp(MyApp());
}
If you are starting a new fresh app, you need to create the Flutter App with flutter create --androidx -i swift
to add support for androidx
, otherwise it won’t work (see AndroidX Migration to migrate an existing app).
During the build, if Android fails with Error: uses-sdk:minSdkVersion 16 cannot be smaller than version 17 declared in library
, it means that you need to update the minSdkVersion
of your android/app/build.gradle
file to at least 17
.
Also, you need to add <uses-permission android:name="android.permission.INTERNET"/>
in the android/app/src/main/AndroidManifest.xml
file in order to give minimum permission to perform network operations in your application.
If you flutter create
d your project prior to version 1.12
, you need to make sure to update your project in order to use the new Java Embedding API! Take a look at the official Flutter wiki: Upgrading pre 1.12 Android projects. Also, you can refer to the #343 issue. Remember to add <meta-data>
tag inside the <application>
tag of your android/app/src/main/AndroidManifest.xml
:
<meta-data
android:name="flutterEmbedding"
android:value="2" />
as mentioned in the 6th step of Full-Flutter app migration guide. Without this, the plugin will NOT work!!!
Because of Flutter AndroidX compatibility, the latest version that doesn’t use AndroidX
is 0.6.0
.
Also, note that to use the InAppWebView
widget on Android, it requires Android API 20+ (see AndroidView)
or Android API 19+ if you enable the useHybridComposition
Android-specific option.
Support HTTP request: Starting with Android 9 (API level 28), cleartext support is disabled by default:
If you want to use the ChromeSafariBrowser
class on Android 11+ you need to specify your app querying for android.support.customtabs.action.CustomTabsService
in your AndroidManifest.xml
(you can read more about it here: https://developers.google.com/web/android/custom-tabs/best-practices#applications_targeting_android_11_api_level_30_or_above).
On Android, in order to enable/disable debugging WebViews using chrome://inspect
on Chrome, you should use the AndroidInAppWebViewController.setWebContentsDebuggingEnabled(bool debuggingEnabled)
static method.
For example, you could call it inside the main function:
Future main() async {
WidgetsFlutterBinding.ensureInitialized();
if (Platform.isAndroid) {
await AndroidInAppWebViewController.setWebContentsDebuggingEnabled(true);
}
runApp(new MyApp());
}
If you are starting a new fresh app, you need to create the Flutter App with flutter create --androidx -i swift
(see flutter/flutter#13422 (comment)), otherwise, you will get this message:
=== BUILD TARGET flutter_inappwebview OF PROJECT Pods WITH CONFIGURATION Debug ===
The “Swift Language Version” (SWIFT_VERSION) build setting must be set to a supported value for targets which use Swift. Supported values are: 3.0, 4.0, 4.2, 5.0\. This setting can be set in the build settings editor.
If you still have this problem, try to edit iOS Podfile
like this (see #15):
target 'Runner' do
use_frameworks! # required by simple_permission
...
end
post_install do |installer|
installer.pods_project.targets.each do |target|
target.build_configurations.each do |config|
config.build_settings['SWIFT_VERSION'] = '5.0' # required by simple_permission
config.build_settings['ENABLE_BITCODE'] = 'NO'
end
end
end
Instead, if you have already a non-swift project, you can check this issue to solve the problem: Friction adding swift plugin to objective-c project.
Support HTTP request: you need to disable Apple Transport Security (ATS) feature. There’re two options:
Info.plist
file)<key>NSAppTransportSecurity</key>
<dict>
<key>NSExceptionDomains</key>
<dict>
<key>www.yourserver.com</key>
<dict>
<!-- add this key to enable subdomains such as sub.yourserver.com -->
<key>NSIncludesSubdomains</key>
<true/>
<!-- add this key to allow standard HTTP requests, thus negating the ATS -->
<key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key>
<true/>
<!-- add this key to specify the minimum TLS version to accept -->
<key>NSTemporaryExceptionMinimumTLSVersion</key>
<string>TLSv1.1</string>
</dict>
</dict>
</dict>
Info.plist
file)<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key><true/>
</dict>
Other useful Info.plist
properties are:
NSAllowsLocalNetworking
: A Boolean value indicating whether to allow loading of local resources (Official wiki);NSAllowsArbitraryLoadsInWebContent
: A Boolean value indicating whether all App Transport Security restrictions are disabled for requests made from web views (Official wiki).On iOS, debugging WebViews on Safari through developer tools is always enabled. There isn’t a way to enable or disable it.
<input type="file" accept="image/*" capture>
In order to be able to use camera, for example, for taking images through <input type="file" accept="image/*" capture>
HTML tag, you need to ask camera permission. To ask camera permission, you can simply use the permission_handler plugin!
Example:
import 'package:permission_handler/permission_handler.dart';
Future main() async {
WidgetsFlutterBinding.ensureInitialized();
await Permission.camera.request();
runApp(MyApp());
}
On Android, you need to add some additional configurations. Add the following codes inside the <application>
tag of your android/app/src/main/AndroidManifest.xml
:
<provider
android:name="com.pichillilorenzo.flutter_inappwebview.InAppWebViewFileProvider"
android:authorities="${applicationId}.flutter_inappwebview.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/provider_paths" />
</provider>
For help getting started with Flutter, view our online documentation.
For help on editing plugin code, view the documentation.
First, add flutter_inappwebview
as a dependency in your pubspec.yaml file.
Classes:
useHybridComposition
Android-specific option.InAppWebView
to the widget tree.http://localhost:[port]/
. The default port
value is 8080
.See the online API Reference to get the full documentation.
The API showed in this README.md
file shows only a part of the documentation that conforms to the master branch only. So, here you could have methods, options, and events that aren’t published yet. If you need a specific version, change the GitHub branch to your version or use the online API Reference (recommended).
assets
folderTo be able to load your local files (assets, js, css, etc.), you need to add them in the assets
section of the pubspec.yaml
file, otherwise they cannot be found!
Example of a pubspec.yaml
file:
...
# 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/index.html
- assets/css/
- assets/images/
...
InAppWebView
classFlutter Widget for adding an inline native WebView integrated into the flutter widget tree.
The plugin relies on Flutter’s mechanism (in developers preview) for embedding Android and iOS native views: AndroidView and UiKitView. Known issues are tagged with the platform-views label in the Flutter official repo. Keyboard support within webviews is also experimental.
Note that on Android it requires Android API 20+ (see AndroidView) or Android API 19+ if you enable the useHybridComposition
Android-specific option.
Use InAppWebViewController
to control the WebView instance. Example:
import 'dart:async';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
Future main() async {
WidgetsFlutterBinding.ensureInitialized();
if (Platform.isAndroid) {
await AndroidInAppWebViewController.setWebContentsDebuggingEnabled(true);
}
runApp(new MyApp());
}
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => new _MyAppState();
}
class _MyAppState extends State<MyApp> {
InAppWebViewController? webView;
String url = "";
double progress = 0;
@override
void initState() {
super.initState();
}
@override
void dispose() {
super.dispose();
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('InAppWebView Example'),
),
body: Container(
child: Column(children: <Widget>[
Container(
padding: EdgeInsets.all(20.0),
child: Text(
"CURRENT URL\n${(url.length > 50) ? url.substring(0, 50) + "..." : url}"),
),
Container(
padding: EdgeInsets.all(10.0),
child: progress < 1.0
? LinearProgressIndicator(value: progress)
: Container()),
Expanded(
child: Container(
margin: const EdgeInsets.all(10.0),
decoration:
BoxDecoration(border: Border.all(color: Colors.blueAccent)),
child: InAppWebView(
initialUrl: "https://flutter.dev/",
initialHeaders: {},
initialOptions: InAppWebViewGroupOptions(
crossPlatform: InAppWebViewOptions(
)
),
onWebViewCreated: (InAppWebViewController controller) {
webView = controller;
},
onLoadStart: (controller, url) {
setState(() {
this.url = url ?? '';
});
},
onLoadStop: (controller, url) async {
setState(() {
this.url = url ?? '';
});
},
onProgressChanged: (controller, progress) {
setState(() {
this.progress = progress / 100;
});
},
),
),
),
ButtonBar(
alignment: MainAxisAlignment.center,
children: <Widget>[
RaisedButton(
child: Icon(Icons.arrow_back),
onPressed: () {
webView?.goBack();
},
),
RaisedButton(
child: Icon(Icons.arrow_forward),
onPressed: () {
webView?.goForward();
},
),
RaisedButton(
child: Icon(Icons.refresh),
onPressed: () {
webView?.reload();
},
),
],
),
])),
),
);
}
}
Screenshots:
InAppWebViewController
MethodsInAppWebViewController
Cross-platform methodsgetUrl
: Gets the URL for the current page.getTitle
: Gets the title for the current page.getProgress
: Gets the progress for the current page. The progress value is between 0 and 100.getHtml
: Gets the content html of the page.getFavicons
: Gets the list of all favicons for the current page.loadUrl({required String url, Map<String, String> headers = const {}})
: Loads the given url with optional headers specified as a map from name to value.postUrl({required String url, required Uint8List postData})
: Loads the given url with postData using POST
method into this WebView.loadData({required String data, String mimeType = "text/html", String encoding = "utf8", String baseUrl = "about:blank", String androidHistoryUrl = "about:blank"})
: Loads the given data into this WebView.loadFile({required String assetFilePath, Map<String, String> headers = const {}})
: Loads the given assetFilePath
with optional headers specified as a map from name to value.reload
: Reloads the WebView.goBack
: Goes back in the history of the WebView.canGoBack
: Returns a boolean value indicating whether the WebView can move backward.goForward
: Goes forward in the history of the WebView.canGoForward
: Returns a boolean value indicating whether the WebView can move forward.goBackOrForward({required int steps})
: Goes to the history item that is the number of steps away from the current item. Steps is negative if backward and positive if forward.canGoBackOrForward({required int steps})
: Returns a boolean value indicating whether the WebView can go back or forward the given number of steps. Steps is negative if backward and positive if forward.goTo({required WebHistoryItem historyItem})
: Navigates to a WebHistoryItem
from the back-forward WebHistory.list
and sets it as the current item.isLoading
: Check if the WebView instance is in a loading state.stopLoading
: Stops the WebView from loading.evaluateJavascript({required String source})
: Evaluates JavaScript code into the WebView and returns the result of the evaluation.injectJavascriptFileFromUrl({required String urlFile})
: Injects an external JavaScript file into the WebView from a defined url.injectJavascriptFileFromAsset({required String assetFilePath})
: Injects a JavaScript file into the WebView from the flutter assets directory.injectCSSCode({required String source})
: Injects CSS into the WebView.injectCSSFileFromUrl({required String urlFile})
: Injects an external CSS file into the WebView from a defined url.injectCSSFileFromAsset({required String assetFilePath})
: Injects a CSS file into the WebView from the flutter assets directory.addJavaScriptHandler({required String handlerName, required JavaScriptHandlerCallback callback})
: Adds a JavaScript message handler callback that listen to post messages sent from JavaScript by the handler with name handlerName
.removeJavaScriptHandler({required String handlerName})
: Removes a JavaScript message handler previously added with the addJavaScriptHandler()
associated to handlerName
key.takeScreenshot
: Takes a screenshot (in PNG format) of the WebView’s visible viewport and returns a Uint8List
. Returns null
if it wasn’t be able to take it.setOptions({required InAppWebViewGroupOptions options})
: Sets the WebView options with the new options and evaluates them.getOptions
: Gets the current WebView options. Returns the options with null
value if they are not set yet.getCopyBackForwardList
: Gets the WebHistory
for this WebView. This contains the back/forward list for use in querying each item in the history stack.clearCache
: Clears all the webview’s cache.findAllAsync({required String find})
: Finds all instances of find on the page and highlights them. Notifies onFindResultReceived
listener.findNext({required bool forward})
: Highlights and scrolls to the next match found by findAllAsync()
. Notifies onFindResultReceived
listener.clearMatches
: Clears the highlighting surrounding text matches created by findAllAsync()
.getTRexRunnerHtml
: Gets the html (with javascript) of the Chromium’s t-rex runner game. Used in combination with getTRexRunnerCss()
.getTRexRunnerCss
: Gets the css of the Chromium’s t-rex runner game. Used in combination with getTRexRunnerHtml()
.scrollTo({required int x, required int y, bool animated = false})
: Scrolls the WebView to the position.scrollBy({required int x, required int y, bool animated = false})
: Moves the scrolled position of the WebView.pauseTimers
: On Android, it pauses all layout, parsing, and JavaScript timers for all WebViews. This is a global requests, not restricted to just this WebView. This can be useful if the application has been paused. On iOS, it is restricted to just this WebView.resumeTimers
: On Android, it resumes all layout, parsing, and JavaScript timers for all WebViews. This will resume dispatching all timers. On iOS, it resumes all layout, parsing, and JavaScript timers to just this WebView.printCurrentPage
: Prints the current page.getScale
: Gets the current scale of this WebView.getSelectedText
: Gets the selected text.getHitTestResult
: Gets the hit result for hitting an HTML elements.clearFocus
: Clears the current focus. It will clear also, for example, the current text selection.setContextMenu(ContextMenu contextMenu)
: Sets or updates the WebView context menu to be used next time it will appear.requestFocusNodeHref
: Requests the anchor or image element URL at the last tapped point.requestImageRef
: Requests the URL of the image last touched by the user.getMetaTags
: Returns the list of <meta>
tags of the current WebView.getMetaThemeColor
: Returns an instance of Color
representing the content
value of the <meta name="theme-color" content="">
tag of the current WebView, if available, otherwise null
.getScrollX
: Returns the scrolled left position of the current WebView.getScrollY
: Returns the scrolled top position of the current WebView.getCertificate
: Gets the SSL certificate for the main top-level page or null if there is no certificate (the site is not secure).static getDefaultUserAgent
: Gets the default user agent.InAppWebViewController.webStorage
InAppWebViewController.webStorage
provides access to the JavaScript Web Storage API:
WebStorage.localStorage
: provides access to window.localStorage
;WebStorage.sessionStorage
: provides access to window.sessionStorage
.Methods available:
length
: Returns an integer representing the number of data items stored in the Storage object.setItem({required String key, required dynamic value})
: When passed a key
name and value
, will add that key to the storage, or update that key’s value if it already exists.getItem({required String key})
: When passed a key
name, will return that key’s value, or null
if the key does not exist, in the given Storage object.removeItem({required String key})
: When passed a key
name, will remove that key from the given Storage object if it exists.getItems
: Returns the list of all items from the given Storage object.clear
: Clears all keys stored in a given Storage object.key({required int index})
: When passed a number index
, returns the name of the nth key in a given Storage object.InAppWebViewController
Android-specific methodsAndroid-specific methods can be called using the InAppWebViewController.android
attribute. Static methods can be called using the AndroidInAppWebViewController
class directly.
startSafeBrowsing
: Starts Safe Browsing initialization.clearSslPreferences
: Clears the SSL preferences table stored in response to proceeding with SSL certificate errors.pause
: Does a best-effort attempt to pause any processing that can be paused safely, such as animations and geolocation. Note that this call does not pause JavaScript.resume
: Resumes a WebView after a previous call to pause()
.getOriginalUrl
: Gets the URL that was originally requested for the current page.pageDown({required bool bottom})
: Scrolls the contents of this WebView down by half the page size.pageUp({required bool top})
: Scrolls the contents of this WebView up by half the view size.saveWebArchive({required String basename, required bool autoname})
: Saves the current view as a web archive.zoomIn
: Performs zoom in in this WebView.zoomOut
: Performs zoom out in this WebView.clearHistory
: Clears the internal back/forward list.static clearClientCertPreferences
: Clears the client certificate preferences stored in response to proceeding/cancelling client cert requests.static getSafeBrowsingPrivacyPolicyUrl
: Returns a URL pointing to the privacy policy for Safe Browsing reporting. This value will never be null
.static setSafeBrowsingWhitelist({required List<String> hosts})
: Sets the list of hosts (domain names/IP addresses) that are exempt from SafeBrowsing checks. The list is global for all the WebViews.static getCurrentWebViewPackage
: Gets the current Android WebView package info.static setWebContentsDebuggingEnabled(bool debuggingEnabled)
: Enables debugging of web contents (HTML / CSS / JavaScript) loaded into any WebViews of this application. Debugging is disabled by default.InAppWebViewController
iOS-specific methodsiOS-specific methods can be called using the InAppWebViewController.ios
attribute. Static methods can be called using the IOSInAppWebViewController
class directly.
hasOnlySecureContent
: A Boolean value indicating whether all resources on the page have been loaded over securely encrypted connections.reloadFromOrigin
: Reloads the current page, performing end-to-end revalidation using cache-validating conditionals if possible.The Android implementation uses addJavascriptInterface. The iOS implementation uses addScriptMessageHandler
The JavaScript function that can be used to call the handler is window.flutter_inappwebview.callHandler(handlerName <String>, ...args)
, where args
are rest parameters. The args
will be stringified automatically using JSON.stringify(args)
method and then they will be decoded on the Dart side.
In order to call window.flutter_inappwebview.callHandler(handlerName <String>, ...args)
properly, you need to wait and listen the JavaScript event flutterInAppWebViewPlatformReady
. This event will be dispatched as soon as the platform (Android or iOS) is ready to handle the callHandler
method.
window.addEventListener("flutterInAppWebViewPlatformReady", function(event) {
console.log("ready");
});
window.flutter_inappwebview.callHandler
returns a JavaScript Promise that can be used to get the json result returned by JavaScriptHandlerCallback
. In this case, simply return data that you want to send and it will be automatically json encoded using jsonEncode
from the dart:convert
library.
So, on the JavaScript side, to get data coming from the Dart side, you will use:
<script>
window.addEventListener("flutterInAppWebViewPlatformReady", function(event) {
window.flutter_inappwebview.callHandler('handlerFoo').then(function(result) {
console.log(result);
});
window.flutter_inappwebview.callHandler('handlerFooWithArgs', 1, true, ['bar', 5], {foo: 'baz'}).then(function(result) {
console.log(result);
});
});
</script>
Instead, on the onLoadStop
WebView event, you can use callHandler
directly:
// Inject JavaScript that will receive data back from Flutter
inAppWebViewController.evaluateJavascript(source: """
window.flutter_inappwebview.callHandler('test', 'Text from Javascript').then(function(result) {
console.log(result);
});
""");
InAppWebView
optionsInAppWebView
Cross-platform optionsallowFileAccessFromFileURLs
: Sets whether JavaScript running in the context of a file scheme URL should be allowed to access content from other file scheme URLs. The default value is false
.allowUniversalAccessFromFileURLs
: Sets whether JavaScript running in the context of a file scheme URL should be allowed to access content from any origin. The default value is false
.applicationNameForUserAgent
: Append to the existing user-agent. Setting userAgent will override this.cacheEnabled
: Sets whether WebView should use browser caching. The default value is true
.clearCache
: Set to true
to have all the browser’s cache cleared before the new WebView is opened. The default value is false
.contentBlockers
: List of ContentBlocker
that are a set of rules used to block content in the browser window.disableContextMenu
: Set to true
to disable context menu. The default value is false
.disableHorizontalScroll
: Set to true
to disable horizontal scroll. The default value is false
.disableVerticalScroll
: Set to true
to disable vertical scroll. The default value is false
.horizontalScrollBarEnabled
: Define whether the horizontal scrollbar should be drawn or not. The default value is true
.incognito
: Set to true
to open a browser window with incognito mode. The default value is false
.javaScriptCanOpenWindowsAutomatically
: Set to true
to allow JavaScript open windows without user interaction. The default value is false
.javaScriptEnabled
: Set to true
to enable JavaScript. The default value is true
.mediaPlaybackRequiresUserGesture
: Set to true
to prevent HTML5 audio or video from autoplaying. The default value is true
.minimumFontSize
: Sets the minimum font size. The default value is 8
for Android, 0
for iOS.preferredContentMode
: Sets the content mode that the WebView needs to use when loading and rendering a webpage. The default value is InAppWebViewUserPreferredContentMode.RECOMMENDED
.resourceCustomSchemes
: List of custom schemes that the WebView must handle. Use the onLoadResourceCustomScheme
event to intercept resource requests with custom scheme.supportZoom
: Set to false
if the WebView should not support zooming using its on-screen zoom controls and gestures. The default value is true
.transparentBackground
: Set to true
to make the background of the WebView transparent. If your app has a dark theme, this can prevent a white flash on initialization. The default value is false
.useOnDownloadStart
: Set to true
to be able to listen at the onDownloadStart
event. The default value is false
.useOnLoadResource
: Set to true
to be able to listen at the onLoadResource
event. The default value is false
.useShouldInterceptAjaxRequest
: Set to true
to be able to listen at the shouldInterceptAjaxRequest
event. The default value is false
.useShouldInterceptFetchRequest
: Set to true
to be able to listen at the shouldInterceptFetchRequest
event. The default value is false
.useShouldOverrideUrlLoading
: Set to true
to be able to listen at the shouldOverrideUrlLoading
event. The default value is false
.userAgent
: Sets the user-agent for the WebView.verticalScrollBarEnabled
: Define whether the vertical scrollbar should be drawn or not. The default value is true
.InAppWebView
Android-specific optionsallowContentAccess
: Enables or disables content URL access within WebView. Content URL access allows WebView to load content from a content provider installed in the system. The default value is true
.allowFileAccess
: Enables or disables file access within WebView. Note that this enables or disables file system access only.appCachePath
: Sets the path to the Application Caches files. In order for the Application Caches API to be enabled, this option must be set a path to which the application can write.blockNetworkImage
: Sets whether the WebView should not load image resources from the network (resources accessed via http and https URI schemes). The default value is false
.blockNetworkLoads
: Sets whether the WebView should not load resources from the network. The default value is false
.builtInZoomControls
: Set to true
if the WebView should use its built-in zoom mechanisms. The default value is true
.cacheMode
: Overrides the way the cache is used. The way the cache is used is based on the navigation type. For a normal page load, the cache is checked and content is re-validated as needed.clearSessionCache
: Set to true
to have the session cookie cache cleared before the new window is opened.cursiveFontFamily
: Sets the cursive font family name. The default value is "cursive"
.databaseEnabled
: Set to true
if you want the database storage API is enabled. The default value is true
.defaultFixedFontSize
: Sets the default fixed font size. The default value is 16
.defaultFontSize
: Sets the default font size. The default value is 16
.defaultTextEncodingName
: Sets the default text encoding name to use when decoding html pages. The default value is "UTF-8"
.disableDefaultErrorPage
: Sets whether the default Android error page should be disabled. The default value is false
.disabledActionModeMenuItems
: Disables the action mode menu items according to menuItems flag.displayZoomControls
: Set to true
if the WebView should display on-screen zoom controls when using the built-in zoom mechanisms. The default value is false
.domStorageEnabled
: Set to true
if you want the DOM storage API is enabled. The default value is true
.fantasyFontFamily
: Sets the fantasy font family name. The default value is "fantasy"
.fixedFontFamily
: Sets the fixed font family name. The default value is "monospace"
.forceDark
: Set the force dark mode for this WebView. The default value is AndroidInAppWebViewForceDark.FORCE_DARK_OFF
.geolocationEnabled
: Sets whether Geolocation API is enabled. The default value is true
.hardwareAcceleration
: Boolean value to enable Hardware Acceleration in the WebView.initialScale
: Sets the initial scale for this WebView. 0 means default. The behavior for the default scale depends on the state of useWideViewPort
and loadWithOverviewMode
.layoutAlgorithm
: Sets the underlying layout algorithm. This will cause a re-layout of the WebView.loadWithOverviewMode
: Sets whether the WebView loads pages in overview mode, that is, zooms out the content to fit on screen by width.loadsImagesAutomatically
: Sets whether the WebView should load image resources. Note that this method controls loading of all images, including those embedded using the data URI scheme.minimumLogicalFontSize
: Sets the minimum logical font size. The default is 8
.mixedContentMode
: Configures the WebView’s behavior when a secure origin attempts to load a resource from an insecure origin.needInitialFocus
: Tells the WebView whether it needs to set a node. The default value is true
.offscreenPreRaster
: Sets whether this WebView should raster tiles when it is offscreen but attached to a window.overScrollMode
: Sets the WebView’s over-scroll mode. The default value is AndroidOverScrollMode.OVER_SCROLL_IF_CONTENT_SCROLLS
.regexToCancelSubFramesLoading
: Regular expression used by shouldOverrideUrlLoading
event to cancel navigation for frames that are not the main frame. If the url request of a subframe matches the regular expression, then the request of that subframe is canceled.rendererPriorityPolicy
: Set the renderer priority policy for this WebView.safeBrowsingEnabled
: Sets whether Safe Browsing is enabled. Safe Browsing allows WebView to protect against malware and phishing attacks by verifying the links.sansSerifFontFamily
: Sets the sans-serif font family name. The default value is "sans-serif"
.saveFormData
: Sets whether the WebView should save form data. In Android O, the platform has implemented a fully functional Autofill feature to store form data.scrollBarDefaultDelayBeforeFade
: Defines the delay in milliseconds that a scrollbar waits before fade out.scrollBarFadeDuration
: Define the scrollbar fade duration in milliseconds.scrollBarStyle
: Specify the style of the scrollbars. The scrollbars can be overlaid or inset. The default value is AndroidScrollBarStyle.SCROLLBARS_INSIDE_OVERLAY
.scrollbarFadingEnabled
: Define whether scrollbars will fade when the view is not scrolling. The default value is true
.serifFontFamily
: Sets the serif font family name. The default value is "sans-serif"
.standardFontFamily
: Sets the standard font family name. The default value is "sans-serif"
.supportMultipleWindows
: Sets whether the WebView whether supports multiple windows.textZoom
: Sets the text zoom of the page in percent. The default value is 100
.thirdPartyCookiesEnabled
: Boolean value to enable third party cookies in the WebView.useHybridComposition
: Set to true
to use Flutter’s new Hybrid Composition rendering method, which fixes all issues here. The default value is false
. Note that this option requires Flutter v1.20+ and should only be used on Android 10+ for release apps, as animations will drop frames on < Android 10 (see Hybrid-Composition#performance).useOnRenderProcessGone
: Set to true
to be able to listen at the androidOnRenderProcessGone
event. The default value is false
.useShouldInterceptRequest
: Set to true
to be able to listen at the androidShouldInterceptRequest
event. The default value is false
.useWideViewPort
: Set to true
if the WebView should enable support for the “viewport” HTML meta tag or should use a wide viewport.verticalScrollbarPosition
: Set the position of the vertical scroll bar. The default value is AndroidVerticalScrollbarPosition.SCROLLBAR_POSITION_DEFAULT
.InAppWebView
iOS-specific optionsaccessibilityIgnoresInvertColors
: A Boolean value indicating whether the view ignores an accessibility request to invert its colors. The default value is false
.allowsAirPlayForMediaPlayback
: Set to true
to allow AirPlay. The default value is true
.allowsBackForwardNavigationGestures
: Set to true
to allow the horizontal swipe gestures trigger back-forward list navigations. The default value is true
.allowsInlineMediaPlayback
: Set to true
to allow HTML5 media playback to appear inline within the screen layout, using browser-supplied controls rather than native controls.allowsLinkPreview
: Set to true
to allow that pressing on a link displays a preview of the destination for the link. The default value is true
.allowsPictureInPictureMediaPlayback
: Set to true
to allow HTML5 videos play picture-in-picture. The default value is true
.alwaysBounceHorizontal
: A Boolean value that determines whether bouncing always occurs when horizontal scrolling reaches the end of the content view. The default value is false
.alwaysBounceVertical
: A Boolean value that determines whether bouncing always occurs when vertical scrolling reaches the end of the content. The default value is false
.automaticallyAdjustsScrollIndicatorInsets
: Configures whether the scroll indicator insets are automatically adjusted by the system. The default value is false
.contentInsetAdjustmentBehavior
: Configures how safe area insets are added to the adjusted content inset. The default value is IOSUIScrollViewContentInsetAdjustmentBehavior.NEVER
.dataDetectorTypes
: Specifying a dataDetectoryTypes value adds interactivity to web content that matches the value.decelerationRate
: A IOSUIScrollViewDecelerationRate
value that determines the rate of deceleration after the user lifts their finger. The default value is IOSUIScrollViewDecelerationRate.NORMAL
.disallowOverScroll
: Set to true
to disable the bouncing of the WebView when the scrolling has reached an edge of the content. The default value is false
.enableViewportScale
: Set to true
to allow a viewport meta tag to either disable or restrict the range of user scaling. The default value is false
.ignoresViewportScaleLimits
: Set to true
if you want that the WebView should always allow scaling of the webpage, regardless of the author’s intent.isFraudulentWebsiteWarningEnabled
: A Boolean value indicating whether warnings should be shown for suspected fraudulent content such as phishing or malware.isPagingEnabled
: A Boolean value that determines whether paging is enabled for the scroll view. The default value is false
.maximumZoomScale
: A floating-point value that specifies the maximum scale factor that can be applied to the scroll view’s content. The default value is 1.0
.minimumZoomScale
: A floating-point value that specifies the minimum scale factor that can be applied to the scroll view’s content. The default value is 1.0
.scrollsToTop
: A Boolean value that controls whether the scroll-to-top gesture is enabled. The default value is true
.selectionGranularity
: The level of granularity with which the user can interactively select content in the web view.sharedCookiesEnabled
: Set true
if shared cookies from HTTPCookieStorage.shared
should used for every load request in the WebView.suppressesIncrementalRendering
: Set to true
if you want the WebView suppresses content rendering until it is fully loaded into memory. The default value is false
.InAppWebView
EventsEvent names that starts with android
or ios
are events platform-specific.
onWebViewCreated
: Event fired when the InAppWebView is created.onLoadStart
: Event fired when the InAppWebView starts to load an url.onLoadStop
: Event fired when the InAppWebView finishes loading an url.onLoadError
: Event fired when the InAppWebView encounters an error loading an url.onLoadHttpError
: Event fired when the InAppWebView main page receives an HTTP error.onProgressChanged
: Event fired when the current progress of loading a page is changed.onConsoleMessage
: Event fired when the InAppWebView receives a ConsoleMessage.shouldOverrideUrlLoading
: Give the host application a chance to take control when a URL is about to be loaded in the current WebView (to use this event, the useShouldOverrideUrlLoading
option must be true
). This event is not called on the initial load of the WebView.onUpdateVisitedHistory
: Event fired when the host application updates its visited links database. This event is also fired when the navigation state of the InAppWebView changes, for example through the usage of the javascript History API functions.onLoadResource
: Event fired when the InAppWebView loads a resource (to use this event, the useOnLoadResource
option must be true
).onScrollChanged
: Event fired when the InAppWebView scrolls.onDownloadStart
: Event fired when InAppWebView recognizes a downloadable file (to use this event, the useOnDownloadStart
option must be true
). To download the file, you can use the flutter_downloader plugin.onLoadResourceCustomScheme
: Event fired when the InAppWebView finds the custom-scheme
while loading a resource. Here you can handle the url request and return a CustomSchemeResponse to load a specific resource encoded to base64
.onCreateWindow
: Event fired when the InAppWebView requests the host application to create a new window, for example when trying to open a link with target="_blank"
or when window.open()
is called by JavaScript side.onCloseWindow
: Event fired when the host application should close the given WebView and remove it from the view system if necessary.onJsAlert
: Event fired when javascript calls the alert()
method to display an alert dialog.onJsConfirm
: Event fired when javascript calls the confirm()
method to display a confirm dialog.onJsPrompt
: Event fired when javascript calls the prompt()
method to display a prompt dialog.onReceivedHttpAuthRequest
: Event fired when the WebView received an HTTP authentication request. The default behavior is to cancel the request.onReceivedServerTrustAuthRequest
: Event fired when the WebView need to perform server trust authentication (certificate validation).onReceivedClientCertRequest
: Notify the host application to handle an SSL client certificate request.onFindResultReceived
: Event fired as find-on-page operations progress.shouldInterceptAjaxRequest
: Event fired when an XMLHttpRequest
is sent to a server (to use this event, the useShouldInterceptAjaxRequest
option must be true
).onAjaxReadyStateChange
: Event fired whenever the readyState
attribute of an XMLHttpRequest
changes (to use this event, the useShouldInterceptAjaxRequest
option must be true
).onAjaxProgress
: Event fired as an XMLHttpRequest
progress (to use this event, the useShouldInterceptAjaxRequest
option must be true
).shouldInterceptFetchRequest
: Event fired when a request is sent to a server through Fetch API (to use this event, the useShouldInterceptFetchRequest
option must be true
).onPrint
: Event fired when window.print()
is called from JavaScript side.onLongPressHitTestResult
: Event fired when an HTML element of the webview has been clicked and held.onEnterFullscreen
: Event fired when the current page has entered full screen mode.onExitFullscreen
: Event fired when the current page has exited full screen mode.onPageCommitVisible
: Called when the web view begins to receive web content.onTitleChanged
: Event fired when a change in the document title occurred.onWindowFocus
: Event fired when the JavaScript window
object of the WebView has received focus. This is the result of the focus
JavaScript event applied to the window
object.onWindowBlur
: Event fired when the JavaScript window
object of the WebView has lost focus. This is the result of the blur
JavaScript event applied to the window
object.androidOnSafeBrowsingHit
: Event fired when the webview notifies that a loading URL has been flagged by Safe Browsing (available only on Android).androidOnPermissionRequest
: Event fired when the webview is requesting permission to access the specified resources and the permission currently isn’t granted or denied (available only on Android).androidOnGeolocationPermissionsShowPrompt
: Event that notifies the host application that web content from the specified origin is attempting to use the Geolocation API, but no permission state is currently set for that origin (available only on Android).androidOnGeolocationPermissionsHidePrompt
: Notify the host application that a request for Geolocation permissions, made with a previous call to androidOnGeolocationPermissionsShowPrompt
has been canceled (available only on Android).androidShouldInterceptRequest
: Notify the host application of a resource request and allow the application to return the data (available only on Android). To use this event, the useShouldInterceptRequest
option must be true
.androidOnRenderProcessGone
: Event fired when the given WebView’s render process has exited (available only on Android).androidOnRenderProcessResponsive
: Event called once when an unresponsive renderer currently associated with the WebView becomes responsive (available only on Android).androidOnRenderProcessUnresponsive
: Event called when the renderer currently associated with the WebView becomes unresponsive as a result of a long running blocking task such as the execution of JavaScript (available only on Android).androidOnFormResubmission
: As the host application if the browser should resend data as the requested page was a result of a POST. The default is to not resend the data (available only on Android).androidOnScaleChanged
: Event fired when the scale applied to the WebView has changed (available only on Android).androidOnRequestFocus
: Event fired when there is a request to display and focus for this WebView (available only on Android).androidOnReceivedIcon
: Event fired when there is new favicon for the current page (available only on Android).androidOnReceivedTouchIconUrl
: Event fired when there is an url for an apple-touch-icon (available only on Android).androidOnJsBeforeUnload
: Event fired when the client should display a dialog to confirm navigation away from the current page. This is the result of the onbeforeunload
javascript event (available only on Android).androidOnReceivedLoginRequest
: Event fired when a request to automatically log in the user has been processed (available only on Android).iosOnWebContentProcessDidTerminate
: Invoked when the web view’s web content process is terminated (available only on iOS).iosOnDidReceiveServerRedirectForProvisionalNavigation
: Called when a web view receives a server redirect (available only on iOS).ContextMenu
classClass that represents the WebView context menu. It used by WebView.contextMenu
.
ContextMenu.menuItems
contains the list of the custom ContextMenuItem
.
NOTE: To make it work properly on Android, JavaScript should be enabled!
Example:
import 'dart:async';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
Future main() async {
WidgetsFlutterBinding.ensureInitialized();
if (Platform.isAndroid) {
await AndroidInAppWebViewController.setWebContentsDebuggingEnabled(true);
}
runApp(new MyApp());
}
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => new _MyAppState();
}
class _MyAppState extends State<MyApp> {
InAppWebViewController? webView;
ContextMenu? contextMenu;
String url = "";
double progress = 0;
@override
void initState() {
super.initState();
contextMenu = ContextMenu(
menuItems: [
ContextMenuItem(androidId: 1, iosId: "1", title: "Special", action: () async {
print("Menu item Special clicked!");
})
],
onCreateContextMenu: (hitTestResult) async {
print("onCreateContextMenu");
print(hitTestResult.extra);
print(await webView?.getSelectedText());
},
onHideContextMenu: () {
print("onHideContextMenu");
},
onContextMenuActionItemClicked: (contextMenuItemClicked) {
var id = (Platform.isAndroid) ? contextMenuItemClicked.androidId : contextMenuItemClicked.iosId;
print("onContextMenuActionItemClicked: " + id.toString() + " " + contextMenuItemClicked.title);
}
);
}
@override
void dispose() {
super.dispose();
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('InAppWebView Example'),
),
body: Container(
child: Column(children: <Widget>[
Container(
padding: EdgeInsets.all(20.0),
child: Text(
"CURRENT URL\n${(url.length > 50) ? url.substring(0, 50) + "..." : url}"),
),
Container(
padding: EdgeInsets.all(10.0),
child: progress < 1.0
? LinearProgressIndicator(value: progress)
: Container()),
Expanded(
child: Container(
margin: const EdgeInsets.all(10.0),
decoration:
BoxDecoration(border: Border.all(color: Colors.blueAccent)),
child: InAppWebView(
initialUrl: "https://flutter.dev/",
contextMenu: contextMenu,
initialHeaders: {},
initialOptions: InAppWebViewGroupOptions(
crossPlatform: InAppWebViewOptions(
)
),
onWebViewCreated: (InAppWebViewController controller) {
webView = controller;
},
onLoadStart: (controller, url) {
setState(() {
this.url = url ?? '';
});
},
onLoadStop: (controller, url) async {
setState(() {
this.url = url ?? '';
});
},
onProgressChanged: (controller, progress) {
setState(() {
this.progress = progress / 100;
});
},
),
),
),
ButtonBar(
alignment: MainAxisAlignment.center,
children: <Widget>[
RaisedButton(
child: Icon(Icons.arrow_back),
onPressed: () {
webView?.goBack();
},
),
RaisedButton(
child: Icon(Icons.arrow_forward),
onPressed: () {
webView?.goForward();
},
),
RaisedButton(
child: Icon(Icons.refresh),
onPressed: () {
webView?.reload();
},
),
],
),
])),
),
);
}
}
ContextMenu
optionshideDefaultSystemContextMenuItems
: Whether all the default system context menu items should be hidden or not. The default value is false
.ContextMenu
EventsonCreateContextMenu
: Event fired when the context menu for this WebView is being built.onHideContextMenu
: Event fired when the context menu for this WebView is being hidden.onContextMenuActionItemClicked
: Event fired when a context menu item has been clicked.HeadlessInAppWebView
classClass that represents a WebView in headless mode. It can be used to run a WebView in background without attaching an InAppWebView
to the widget tree.
Remember to dispose it when you don’t need it anymore.
As InAppWebView
, it has the same options and events. Use InAppWebViewController
to control the WebView instance.
Example:
import 'dart:async';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
Future main() async {
WidgetsFlutterBinding.ensureInitialized();
if (Platform.isAndroid) {
await AndroidInAppWebViewController.setWebContentsDebuggingEnabled(true);
}
runApp(new MyApp());
}
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => new _MyAppState();
}
class _MyAppState extends State<MyApp> {
HeadlessInAppWebView? headlessWebView;
String url = "";
@override
void initState() {
super.initState();
headlessWebView = new HeadlessInAppWebView(
initialUrl: "https://flutter.dev/",
initialOptions: InAppWebViewGroupOptions(
crossPlatform: InAppWebViewOptions(
),
),
onWebViewCreated: (controller) {
print('HeadlessInAppWebView created!');
},
onConsoleMessage: (controller, consoleMessage) {
print("CONSOLE MESSAGE: " + consoleMessage.message);
},
onLoadStart: (controller, url) async {
print("onLoadStart $url");
setState(() {
this.url = url ?? '';
});
},
onLoadStop: (controller, url) async {
print("onLoadStop $url");
setState(() {
this.url = url ?? '';
});
},
onUpdateVisitedHistory: (controller, url, androidIsReload) {
print("onUpdateVisitedHistory $url");
setState(() {
this.url = url ?? '';
});
},
);
}
@override
void dispose() {
super.dispose();
headlessWebView?.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(
"HeadlessInAppWebView",
)),
body: SafeArea(
child: Column(children: <Widget>[
Container(
padding: EdgeInsets.all(20.0),
child: Text(
"CURRENT URL\n${(url.length > 50) ? url.substring(0, 50) + "..." : url}"),
),
Center(
child: RaisedButton(
onPressed: () async {
await headlessWebView?.dispose();
await headlessWebView?.run();
},
child: Text("Run HeadlessInAppWebView")),
),
Center(
child: RaisedButton(
onPressed: () async {
try {
await headlessWebView?.webViewController.evaluateJavascript(source: """console.log('Here is the message!');""");
} on MissingPluginException catch(e) {
print("HeadlessInAppWebView is not running. Click on \"Run HeadlessInAppWebView\"!");
}
},
child: Text("Send console.log message")),
),
Center(
child: RaisedButton(
onPressed: () {
headlessWebView?.dispose();
},
child: Text("Dispose HeadlessInAppWebView")),
)
])
)
);
}
}
InAppBrowser
classIn-App Browser using native WebView.
inAppBrowser.webViewController
can be used to access the InAppWebView
API.
Create a Class that extends the InAppBrowser
Class in order to override the callbacks to manage the browser events. Example:
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
class MyInAppBrowser extends InAppBrowser {
@override
Future onBrowserCreated() async {
print("\n\nBrowser Created!\n\n");
}
@override
Future onLoadStart(url) async {
print("\n\nStarted $url\n\n");
}
@override
Future onLoadStop(url) async {
print("\n\nStopped $url\n\n");
}
@override
void onLoadError(url, code, message) {
print("Can't load $url.. Error: $message");
}
@override
void onProgressChanged(progress) {
print("Progress: $progress");
}
@override
void onExit() {
print("\n\nBrowser closed!\n\n");
}
@override
Future<ShouldOverrideUrlLoadingAction> shouldOverrideUrlLoading(ShouldOverrideUrlLoadingRequest shouldOverrideUrlLoadingRequest) async {
print("\n\n override ${shouldOverrideUrlLoadingRequest.url}\n\n");
return ShouldOverrideUrlLoadingAction.ALLOW;
}
@override
void onLoadResource(LoadedResource response) {
print("Started at: " +
response.startTime.toString() +
"ms ---> duration: " +
response.duration.toString() +
"ms " +
(response.url ?? ''));
}
@override
void onConsoleMessage(ConsoleMessage consoleMessage) {
print("""
console output:
message: ${consoleMessage.message}
messageLevel: ${consoleMessage.messageLevel?.toValue()}
""");
}
}
Future main() async {
WidgetsFlutterBinding.ensureInitialized();
if (Platform.isAndroid) {
await AndroidInAppWebViewController.setWebContentsDebuggingEnabled(true);
}
runApp(
new MyApp(),
);
}
class MyApp extends StatefulWidget {
final MyInAppBrowser browser = new MyInAppBrowser();
@override
_MyAppState createState() => new _MyAppState();
}
class _MyAppState extends State<MyApp> {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('InAppBrowser Example'),
),
body: Center(
child: RaisedButton(
onPressed: () {
widget.browser.openFile(
assetFilePath: "assets/index.html",
options: InAppBrowserClassOptions(
inAppWebViewGroupOptions: InAppWebViewGroupOptions(
crossPlatform: InAppWebViewOptions(
useShouldOverrideUrlLoading: true,
useOnLoadResource: true,
))));
},
child: Text("Open InAppBrowser")),
),
),
);
}
}
Screenshots:
InAppBrowser
Methodsopen({String url = "about:blank", Map<String, String> headers = const {}, InAppBrowserClassOptions options})
: Opens an url
in a new InAppBrowser
instance.openFile({required String assetFilePath, Map<String, String> headers = const {}, InAppBrowserClassOptions options})
: Opens the given assetFilePath
file in a new InAppBrowser
instance. The other arguments are the same of InAppBrowser.open
.openData({required String data, String mimeType = "text/html", String encoding = "utf8", String baseUrl = "about:blank", String historyUrl = "about:blank", InAppBrowserClassOptions options})
: Opens a new InAppBrowser
instance with data
as a content, using baseUrl
as the base URL for it.openWithSystemBrowser({required String url})
: This is a static method that opens an url
in the system browser. You wont be able to use the InAppBrowser
methods here!show
: Displays an InAppBrowser
window that was opened hidden. Calling this has no effect if the InAppBrowser
was already visible.hide
: Hides the InAppBrowser
window. Calling this has no effect if the InAppBrowser
was already hidden.close
: Closes the InAppBrowser
window.isHidden
: Check if the Web View of the InAppBrowser
instance is hidden.setOptions({required InAppBrowserClassOptions options})
: Sets the InAppBrowser
options with the new options
and evaluates them.getOptions
: Gets the current InAppBrowser
options as a Map
. Returns null
if the options are not setted yet.isOpened
: Returns true
if the InAppBrowser
instance is opened, otherwise false
.InAppBrowser
optionsThey are the same of the InAppWebView
class. Specific options of the InAppBrowser
class are:
InAppBrowser
Cross-platform optionshidden
: Set to true
to create the browser and load the page, but not show it. Omit or set to false
to have the browser open and load normally. The default value is false
.hideUrlBar
: Set to true
to hide the url bar on the toolbar at the top. The default value is false
.toolbarTopBackgroundColor
: Set the custom background color of the toolbar at the top.toolbarTop
: Set to false
to hide the toolbar at the top of the WebView. The default value is true
.InAppBrowser
Android-specific optionscloseOnCannotGoBack
: Set to false
to not close the InAppBrowser when the user click on the back button and the WebView cannot go back to the history. The default value is true
.hideTitleBar
: Set to true
if you want the title should be displayed. The default value is false
.progressBar
: Set to false
to hide the progress bar at the bottom of the toolbar at the top. The default value is true
.toolbarTopFixedTitle
: Set the action bar’s title.InAppBrowser
iOS-specific optionscloseButtonCaption
: Set the custom text for the close button.closeButtonColor
: Set the custom color for the close button.presentationStyle
: Set the custom modal presentation style when presenting the WebView. The default value is IOSUIModalPresentationStyle.FULL_SCREEN
.spinner
: Set to false
to hide the spinner when the WebView is loading a page. The default value is true
.toolbarBottomBackgroundColor
: Set the custom background color of the toolbar at the bottom.toolbarBottomTranslucent
: Set to true
to set the toolbar at the bottom translucent. The default value is true
.toolbarBottom
: Set to false
to hide the toolbar at the bottom of the WebView. The default value is true
.transitionStyle
: Set to the custom transition style when presenting the WebView. The default value is IOSUIModalTransitionStyle.COVER_VERTICAL
.InAppBrowser
EventsThey are the same of the InAppWebView
class, except for InAppWebView.onWebViewCreated
event. Specific events of the InAppBrowser
class are:
onBrowserCreated
: Event fired when the InAppBrowser
is created.onExit
: Event fired when the InAppBrowser
window is closed.ChromeSafariBrowser
classChrome Custom Tabs on Android / SFSafariViewController on iOS.
If you want to use the ChromeSafariBrowser
class on Android 11+ you need to specify your app querying for android.support.customtabs.action.CustomTabsService
in your AndroidManifest.xml
(you can read more about it here: https://developers.google.com/web/android/custom-tabs/best-practices#applications_targeting_android_11_api_level_30_or_above).
You can initialize the ChromeSafariBrowser
instance with an InAppBrowser
fallback instance.
Create a Class that extends the ChromeSafariBrowser
Class in order to override the callbacks to manage the browser events. Example:
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';
class MyInAppBrowser extends InAppBrowser {
@override
Future onLoadStart(url) async {
print("\n\nStarted $url\n\n");
}
@override
Future onLoadStop(url) async {
print("\n\nStopped $url\n\n");
}
@override
void onLoadError(url, code, message) {
print("\n\nCan't load $url.. Error: $message\n\n");
}
@override
void onExit() {
print("\n\nBrowser closed!\n\n");
}
}
class MyChromeSafariBrowser extends ChromeSafariBrowser {
MyChromeSafariBrowser(browserFallback) : super(bFallback: browserFallback);
@override
void onOpened() {
print("ChromeSafari browser opened");
}
@override
void onCompletedInitialLoad() {
print("ChromeSafari browser initial load completed");
}
@override
void onClosed() {
print("ChromeSafari browser closed");
}
}
Future main() async {
WidgetsFlutterBinding.ensureInitialized();
if (Platform.isAndroid) {
await AndroidInAppWebViewController.setWebContentsDebuggingEnabled(true);
}
runApp(new MyApp());
}
class MyApp extends StatefulWidget {
final ChromeSafariBrowser browser = new MyChromeSafariBrowser(new MyInAppBrowser());
@override
_MyAppState createState() => new _MyAppState();
}
class _MyAppState extends State<MyApp> {
@override
void initState() {
widget.browser.addMenuItem(new ChromeSafariBrowserMenuItem(id: 1, label: 'Custom item menu 1', action: (url, title) {
print('Custom item menu 1 clicked!');
print(url);
print(title);
}));
widget.browser.addMenuItem(new ChromeSafariBrowserMenuItem(id: 2, label: 'Custom item menu 2', action: (url, title) {
print('Custom item menu 2 clicked!');
print(url);
print(title);
}));
super.initState();
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('ChromeSafariBrowser Example'),
),
body: Center(
child: RaisedButton(
onPressed: () async {
await widget.browser.open(
url: "https://flutter.dev/",
options: ChromeSafariBrowserClassOptions(
android: AndroidChromeCustomTabsOptions(addDefaultShareMenuItem: false),
ios: IOSSafariOptions(barCollapsingEnabled: true)));
},
child: Text("Open Chrome Safari Browser")),
),
),
);
}
}
Screenshots:
ChromeSafariBrowser
MethodsaddMenuItem
: Adds a ChromeSafariBrowserMenuItem
to the menu.addMenuItems
: Adds a list of ChromeSafariBrowserMenuItem
to the menu.close
: Closes the ChromeSafariBrowser
instance.isOpened
: Returns true
if the ChromeSafariBrowser
instance is opened, otherwise false
.open({required String url, ChromeSafariBrowserClassOptions options, Map<String, String> headersFallback = const {}, InAppBrowserClassOptions optionsFallback})
: Opens an url
in a new ChromeSafariBrowser
instance.static isAvailable
: On Android, returns true
if Chrome Custom Tabs is available. On iOS, returns true
if SFSafariViewController is available. Otherwise returns false
.ChromeSafariBrowser
optionsChromeSafariBrowser
Android-specific optionsaddDefaultShareMenuItem
: Set to false
if you don’t want the default share item to the menu. The default value is true
.enableUrlBarHiding
: Set to true
to enable the url bar to hide as the user scrolls down on the page. The default value is false
.instantAppsEnabled
: Set to true
to enable Instant Apps. The default value is false
.keepAliveEnabled
: Set to true
to enable Keep Alive. The default value is false
.packageName
: Set the name of the application package to handle the intent (for example com.android.chrome
), or null to allow any application package.showTitle
: Set to false
if the title shouldn’t be shown in the custom tab. The default value is true
.toolbarBackgroundColor
: Set the custom background color of the toolbar.ChromeSafariBrowser
iOS-specific optionsbarCollapsingEnabled
: Set to true
to enable bar collapsing. The default value is false
.dismissButtonStyle
: Set the custom style for the dismiss button. The default value is IOSSafariDismissButtonStyle.DONE
.entersReaderIfAvailable
: Set to true
if Reader mode should be entered automatically when it is available for the webpage. The default value is false
.preferredBarTintColor
: Set the custom background color of the navigation bar and the toolbar.preferredControlTintColor
: Set the custom color of the control buttons on the navigation bar and the toolbar.presentationStyle
: Set the custom modal presentation style when presenting the WebView. The default value is IOSUIModalPresentationStyle.FULL_SCREEN
.transitionStyle
: Set to the custom transition style when presenting the WebView. The default value is IOSUIModalTransitionStyle.COVER_VERTICAL
.ChromeSafariBrowser
EventsonOpened
: Event fires when the ChromeSafariBrowser
is opened.onCompletedInitialLoad
: Event fires when the initial URL load is complete.onClosed
: Event fires when the ChromeSafariBrowser
is closed.InAppLocalhostServer
classThis class allows you to create a simple server on http://localhost:[port]/
in order to be able to load your assets file on a server. The default port
value is 8080
.
Example:
// ...
InAppLocalhostServer localhostServer = new InAppLocalhostServer();
Future main() async {
WidgetsFlutterBinding.ensureInitialized();
await localhostServer.start();
if (Platform.isAndroid) {
await AndroidInAppWebViewController.setWebContentsDebuggingEnabled(true);
}
runApp(new MyApp());
}
// ...
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('InAppWebView Example'),
),
body: Container(
child: Column(children: <Widget>[
Expanded(
child: Container(
child: InAppWebView(
initialUrl: "http://localhost:8080/assets/index.html",
initialHeaders: {},
initialOptions: InAppWebViewGroupOptions(
crossPlatform: InAppWebViewOptions(
)
),
onWebViewCreated: (controller) {
},
onLoadStart: (controller, url) {
},
onLoadStop: (controller, url) {
},
),
),
)]
)
),
),
);
}
// ...
InAppLocalhostServer
methodsstart
: Starts a server on http://localhost:[port]/
.close
: Closes the server.CookieManager
classThis class implements a singleton object (shared instance) which manages the cookies used by WebView instances.
On Android, it is implemented using CookieManager. On iOS, it is implemented using WKHTTPCookieStore.
NOTE for iOS below 11.0 (LIMITED SUPPORT!): in this case, almost all of the methods (CookieManager.deleteAllCookies
and IOSCookieManager.getAllCookies
are not supported!) has been implemented using JavaScript because there is no other way to work with them on iOS below 11.0. See https://developer.mozilla.org/en-US/docs/Web/HTTP/Cookies#restrict_access_to_cookies for JavaScript restrictions.
CookieManager
methodsinstance
: Gets the cookie manager shared instance.setCookie({required String url, required String name, required String value, String? domain, String path = "/", int? expiresDate, int? maxAge, bool? isSecure, bool? isHttpOnly, HTTPCookieSameSitePolicy? sameSite, InAppWebViewController? iosBelow11WebViewController})
: Sets a cookie for the given url
. Any existing cookie with the same host
, path
and name
will be replaced with the new cookie. The cookie being set will be ignored if it is expired.getCookies({required String url, InAppWebViewController? iosBelow11WebViewController})
: Gets all the cookies for the given url
.getCookie({required String url, required String name, InAppWebViewController? iosBelow11WebViewController})
: Gets a cookie by its name
for the given url
.deleteCookie({required String url, required String name, String domain = "", String path = "/", InAppWebViewController? iosBelow11WebViewController})
: Removes a cookie by its name
for the given url
, domain
and path
.deleteCookies({required String url, String domain = "", String path = "/", InAppWebViewController? iosBelow11WebViewController})
: Removes all cookies for the given url
, domain
and path
.deleteAllCookies()
: Removes all cookies.CookieManager
iOS-specific methodsiOS-specific methods can be called using the CookieManager.instance().ios
attribute.
getAllCookies()
: Fetches all stored cookies.HttpAuthCredentialDatabase
classThis class implements a singleton object (shared instance) which manages the shared HTTP auth credentials cache. On iOS, this class uses the URLCredentialStorage class. On Android, this class has a custom implementation using android.database.sqlite.SQLiteDatabase
because WebViewDatabase doesn’t offer the same functionalities as iOS URLCredentialStorage
.
HttpAuthCredentialDatabase
methodsinstance
: Gets the database shared instance.getAllAuthCredentials
: Gets a map list of all HTTP auth credentials saved.getHttpAuthCredentials({required ProtectionSpace protectionSpace})
: Gets all the HTTP auth credentials saved for that protectionSpace
.setHttpAuthCredential({required ProtectionSpace protectionSpace, required HttpAuthCredential credential})
: Saves an HTTP auth credential
for that protectionSpace
.removeHttpAuthCredential({required ProtectionSpace protectionSpace, required HttpAuthCredential credential})
: Removes an HTTP auth credential
for that protectionSpace
.removeHttpAuthCredentials({required ProtectionSpace protectionSpace})
: Removes all the HTTP auth credentials saved for that protectionSpace
.clearAllAuthCredentials()
: Removes all the HTTP auth credentials saved in the database.WebStorageManager
classThis class implements a singleton object (shared instance) which manages the web storage used by WebView instances.
On Android, it is implemented using WebStorage. On iOS, it is implemented using WKWebsiteDataStore.default()
NOTE for iOS: available from iOS 9.0+.
WebStorageManager
methodsinstance
: Gets the WebStorage manager shared instance.WebStorageManager
Android-specific methodsAndroid-specific methods can be called using the WebStorageManager.instance().android
attribute.
AndroidWebStorageManager
class is used to manage the JavaScript storage APIs provided by the WebView. It manages the Application Cache API, the Web SQL Database API and the HTML5 Web Storage API.
getOrigins
: Gets the origins currently using either the Application Cache or Web SQL Database APIs.deleteAllData
: Clears all storage currently being used by the JavaScript storage APIs.deleteOrigin({required String origin})
: Clears the storage currently being used by both the Application Cache and Web SQL Database APIs by the given origin
.getQuotaForOrigin({required String origin})
: Gets the storage quota for the Web SQL Database API for the given origin
.getUsageForOrigin({required String origin})
: Gets the amount of storage currently being used by both the Application Cache and Web SQL Database APIs by the given origin
.WebStorageManager
iOS-specific methodsiOS-specific methods can be called using the WebStorageManager.instance().ios
attribute.
IOSWebStorageManager
class represents various types of data that a website might make use of. This includes cookies, disk and memory caches, and persistent data such as WebSQL, IndexedDB databases, and local storage.
fetchDataRecords({required Set<IOSWKWebsiteDataType> dataTypes})
: Fetches data records containing the given website data types.removeDataFor({required Set<IOSWKWebsiteDataType> dataTypes, required List<IOSWKWebsiteDataRecord> dataRecords})
: Removes website data of the given types for the given data records.removeDataModifiedSince({required Set<IOSWKWebsiteDataType> dataTypes, required DateTime date})
: Removes all website data of the given types that has been modified since the given date.Author: pichillilorenzo
Source Code: https://github.com/pichillilorenzo/flutter_inappwebview
#flutter #dart #mobile-apps