[webview_flutter] Add setAllowFileAccess

packages/webview_flutter/CHANGELOG.md

@@ -1,3 +1,6 @@
+## 2.1.0
+* Export Android WebView configuration: `allowFileAccess`
+
 ## 2.0.4
 
 * Fix a bug where `allowsInlineMediaPlayback` is not respected on iOS.

packages/webview_flutter/android/src/main/java/io/flutter/plugins/webviewflutter/FlutterWebView.java

@@ -132,6 +132,10 @@ public void onProgressChanged(WebView view, int progress) {
       String url = (String) params.get("initialUrl");
       webView.loadUrl(url);
     }
+
+    if (params.containsKey("allowFileAccess") && params.get("allowFileAccess") != null) {
+      webView.getSettings().setAllowFileAccess((boolean) params.get("allowFileAccess"));
+    }
   }
 
   @Override

packages/webview_flutter/lib/platform_interface.dart

@@ -455,6 +455,7 @@ class CreationParams {
     this.userAgent,
     this.autoMediaPlaybackPolicy =
         AutoMediaPlaybackPolicy.require_user_action_for_all_media_types,
+    this.allowFileAccess,
   }) : assert(autoMediaPlaybackPolicy != null);
 
   /// The initialUrl to load in the webview.
@@ -488,9 +489,14 @@ class CreationParams {
   /// Which restrictions apply on automatic media playback.
   final AutoMediaPlaybackPolicy autoMediaPlaybackPolicy;
 
+  /// The value if it allows file access.
+  ///
+  /// This setting only applies to Android
+  final bool? allowFileAccess;
+
   @override
   String toString() {
-    return '$runtimeType(initialUrl: $initialUrl, settings: $webSettings, javascriptChannelNames: $javascriptChannelNames, UserAgent: $userAgent)';
+    return '$runtimeType(initialUrl: $initialUrl, settings: $webSettings, javascriptChannelNames: $javascriptChannelNames, UserAgent: $userAgent, allowFileAccess: $allowFileAccess)';
   }
 }
 

packages/webview_flutter/lib/src/webview_method_channel.dart

@@ -211,6 +211,7 @@ class MethodChannelWebViewPlatform implements WebViewPlatformController {
       'userAgent': creationParams.userAgent,
       'autoMediaPlaybackPolicy': creationParams.autoMediaPlaybackPolicy.index,
       'usesHybridComposition': usesHybridComposition,
+      'allowFileAccess': creationParams.allowFileAccess,
     };
   }
 }

packages/webview_flutter/lib/webview_flutter.dart

@@ -180,7 +180,7 @@ class JavascriptChannel {
   JavascriptChannel({
     required this.name,
     required this.onMessageReceived,
-  })   : assert(name != null),
+  })  : assert(name != null),
         assert(onMessageReceived != null),
         assert(_validChannelNames.hasMatch(name));
 
@@ -231,6 +231,7 @@ class WebView extends StatefulWidget {
     this.initialMediaPlaybackPolicy =
         AutoMediaPlaybackPolicy.require_user_action_for_all_media_types,
     this.allowsInlineMediaPlayback = false,
+    this.allowFileAccess,
   })  : assert(javascriptMode != null),
         assert(initialMediaPlaybackPolicy != null),
         assert(allowsInlineMediaPlayback != null),
@@ -415,6 +416,11 @@ class WebView extends StatefulWidget {
   /// The default policy is [AutoMediaPlaybackPolicy.require_user_action_for_all_media_types].
   final AutoMediaPlaybackPolicy initialMediaPlaybackPolicy;
 
+  /// The value if it allows file access.
+  ///
+  /// This setting only applies to Android
+  final bool? allowFileAccess;
+
   @override
   State<StatefulWidget> createState() => _WebViewState();
 }
@@ -479,6 +485,7 @@ CreationParams _creationParamsfromWidget(WebView widget) {
     javascriptChannelNames: _extractChannelNames(widget.javascriptChannels),
     userAgent: widget.userAgent,
     autoMediaPlaybackPolicy: widget.initialMediaPlaybackPolicy,
+    allowFileAccess: widget.allowFileAccess,
   );
 }
 

packages/webview_flutter/pubspec.yaml

@@ -1,7 +1,7 @@
 name: webview_flutter
 description: A Flutter plugin that provides a WebView widget on Android and iOS.
 homepage: https://github.com/flutter/plugins/tree/master/packages/webview_flutter
-version: 2.0.4
+version: 2.1.0
 
 environment:
   sdk: ">=2.12.0-259.9.beta <3.0.0"

packages/webview_flutter/test/webview_flutter_test.dart

@@ -920,6 +920,19 @@ void main() {
 
     expect(platformWebView.userAgent, 'UA');
   });
+
+  testWidgets('Set allowFileAccess', (WidgetTester tester) async {
+    await tester.pumpWidget(const WebView(
+      initialUrl: 'https://youtube.com',
+      javascriptMode: JavascriptMode.unrestricted,
+      allowFileAccess: true,
+    ));
+
+    final FakePlatformWebView platformWebView =
+        fakePlatformViewsController.lastCreatedView!;
+
+    expect(platformWebView.allowFileAccess, true);
+  });
 }
 
 class FakePlatformWebView {
@@ -935,6 +948,9 @@ class FakePlatformWebView {
       javascriptChannelNames =
           List<String>.from(params['javascriptChannelNames']);
     }
+    if (params.containsKey('allowFileAccess')) {
+      allowFileAccess = params['allowFileAccess'];
+    }
     javascriptMode = JavascriptMode.values[params['settings']['jsMode']];
     hasNavigationDelegate =
         params['settings']['hasNavigationDelegate'] ?? false;
@@ -959,6 +975,7 @@ class FakePlatformWebView {
   bool? hasNavigationDelegate;
   bool? debuggingEnabled;
   String? userAgent;
+  bool? allowFileAccess;
 
   Future<dynamic> onMethodCall(MethodCall call) {
     switch (call.method) {