flutter · fluttergithubbot · Dec 7, 2021 · Dec 7, 2021 · Dec 7, 2021 · Dec 7, 2021
diff --git a/packages/webview_flutter/webview_flutter/CHANGELOG.md b/packages/webview_flutter/webview_flutter/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 2.8.0
+
+* Adds support for the `loadFlutterAsset` method.
+
 ## 2.7.0
 
 * Adds `setCookie` to CookieManager.

diff --git a/packages/webview_flutter/webview_flutter/example/assets/www/index.html b/packages/webview_flutter/webview_flutter/example/assets/www/index.html
@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<!-- Copyright 2013 The Flutter Authors. All rights reserved.
+Use of this source code is governed by a BSD-style license that can be
+found in the LICENSE file. -->
+<html lang="en">
+<head>
+<title>Load file or HTML string example</title>
+<link rel="stylesheet" href="styles/style.css" />
+</head>
+<body>
+
+<h1>Local demo page</h1>
+<p>
+  This is an example page used to demonstrate how to load a local file or HTML 
+  string using the <a href="https://pub.dev/packages/webview_flutter">Flutter 
+  webview</a> plugin.
+</p>
+
+</body>
+</html>
diff --git a/packages/webview_flutter/webview_flutter/example/assets/www/styles/style.css b/packages/webview_flutter/webview_flutter/example/assets/www/styles/style.css
@@ -0,0 +1,3 @@
+h1 {
+    color: blue;
+}
diff --git a/packages/webview_flutter/webview_flutter/example/lib/main.dart b/packages/webview_flutter/webview_flutter/example/lib/main.dart
@@ -179,6 +179,7 @@ enum MenuOptions {
   navigationDelegate,
   doPostRequest,
   loadLocalFile,
+  loadFlutterAsset,
   loadHtmlString,
   transparentBackground,
   setCookie,
@@ -227,6 +228,9 @@ class SampleMenu extends StatelessWidget {
               case MenuOptions.loadLocalFile:
                 _onLoadLocalFileExample(controller.data!, context);
                 break;
+              case MenuOptions.loadFlutterAsset:
+                _onLoadFlutterAssetExample(controller.data!, context);
+                break;
               case MenuOptions.loadHtmlString:
                 _onLoadHtmlStringExample(controller.data!, context);
                 break;
@@ -280,6 +284,10 @@ class SampleMenu extends StatelessWidget {
               value: MenuOptions.loadLocalFile,
               child: Text('Load local file'),
             ),
+            const PopupMenuItem<MenuOptions>(
+              value: MenuOptions.loadFlutterAsset,
+              child: Text('Load Flutter Asset'),
+            ),
             const PopupMenuItem<MenuOptions>(
               key: ValueKey<String>('ShowTransparentBackgroundExample'),
               value: MenuOptions.transparentBackground,
@@ -392,6 +400,11 @@ class SampleMenu extends StatelessWidget {
     await controller.loadFile(pathToIndex);
   }
 
+  Future<void> _onLoadFlutterAssetExample(
+      WebViewController controller, BuildContext context) async {
+    await controller.loadFlutterAsset('assets/www/index.html');
+  }
+
   Future<void> _onLoadHtmlStringExample(
       WebViewController controller, BuildContext context) async {
     await controller.loadHtmlString(kLocalExamplePage);

diff --git a/packages/webview_flutter/webview_flutter/example/pubspec.yaml b/packages/webview_flutter/webview_flutter/example/pubspec.yaml
@@ -33,3 +33,5 @@ flutter:
   assets:
     - assets/sample_audio.ogg
     - assets/sample_video.mp4
+    - assets/www/index.html
+    - assets/www/styles/style.css
diff --git a/packages/webview_flutter/webview_flutter/lib/src/webview.dart b/packages/webview_flutter/webview_flutter/lib/src/webview.dart
@@ -526,6 +526,15 @@ class WebViewController {
     return _webViewPlatformController.loadFile(absoluteFilePath);
   }
 
+  /// Loads the Flutter asset specified in the pubspec.yaml file.
+  ///
+  /// Throws an ArgumentError if [key] is not part of the specified assets
+  /// in the pubspec.yaml file.
+  Future<void> loadFlutterAsset(String key) {
+    assert(key.isNotEmpty);
+    return _webViewPlatformController.loadFlutterAsset(key);
+  }
+
   /// Loads the supplied HTML string.
   ///
   /// The [baseUrl] parameter is used when resolving relative URLs within the

diff --git a/packages/webview_flutter/webview_flutter/pubspec.yaml b/packages/webview_flutter/webview_flutter/pubspec.yaml
@@ -2,7 +2,7 @@ name: webview_flutter
 description: A Flutter plugin that provides a WebView widget on Android and iOS.
 repository: https://github.com/flutter/plugins/tree/master/packages/webview_flutter/webview_flutter
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+webview%22
-version: 2.7.0
+version: 2.8.0
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
@@ -21,7 +21,7 @@ dependencies:
     sdk: flutter
   webview_flutter_android: ^2.8.0
   webview_flutter_platform_interface: ^1.8.0
-  webview_flutter_wkwebview: ^2.6.0
+  webview_flutter_wkwebview: ^2.7.0
 
 dev_dependencies:
   build_runner: ^2.1.5

diff --git a/packages/webview_flutter/webview_flutter/test/webview_flutter_test.dart b/packages/webview_flutter/webview_flutter/test/webview_flutter_test.dart
@@ -131,6 +131,40 @@ void main() {
     expect(() => controller!.loadFile(''), throwsAssertionError);
   });
 
+  testWidgets('Load Flutter asset', (WidgetTester tester) async {
+    WebViewController? controller;
+    await tester.pumpWidget(
+      WebView(
+        onWebViewCreated: (WebViewController webViewController) {
+          controller = webViewController;
+        },
+      ),
+    );
+
+    expect(controller, isNotNull);
+
+    await controller!.loadFlutterAsset('assets/index.html');
+
+    verify(mockWebViewPlatformController.loadFlutterAsset(
+      'assets/index.html',
+    ));
+  });
+
+  testWidgets('Load Flutter asset with empty key', (WidgetTester tester) async {
+    WebViewController? controller;
+    await tester.pumpWidget(
+      WebView(
+        onWebViewCreated: (WebViewController webViewController) {
+          controller = webViewController;
+        },
+      ),
+    );
+
+    expect(controller, isNotNull);
+
+    expect(() => controller!.loadFlutterAsset(''), throwsAssertionError);
+  });
+
   testWidgets('Load HTML string without base URL', (WidgetTester tester) async {
     WebViewController? controller;
     await tester.pumpWidget(