added AndroidWebViewFeature, AndroidServiceWorkerController, AndroidServiceWorkerClient classes

CHANGELOG.md

@@ -5,12 +5,11 @@
 - Added `allowUniversalAccessFromFileURLs` and `allowFileAccessFromFileURLs` WebView options also for iOS (also thanks to [liranhao](https://github.com/liranhao))
 - Added limited cookies support on iOS below 11.0 using JavaScript
 - Added `IOSCookieManager` class and `CookieManager.instance().ios.getAllCookies` iOS-specific method
-- Added `UserScript` and `UserScriptInjectionTime` classes
+- Added `UserScript`, `UserScriptInjectionTime`, `ContentWorld`, `AndroidWebViewFeature`, `AndroidServiceWorkerController`, `AndroidServiceWorkerClient` classes
 - Added `initialUserScripts` WebView option
 - Added `addUserScript`, `addUserScripts`, `removeUserScript`, `removeUserScripts`, `removeAllUserScripts` WebView methods
 - Added `isDirectionalLockEnabled`, `mediaType`, `pageZoom`, `limitsNavigationsToAppBoundDomains` iOS-specific webview options
 - Added `handlesURLScheme` iOS-specific webview method
-- Added `ContentWorld` class
 - Updated integration tests
 - Merge "Upgraded appcompat to 1.2.0-rc-02" [#465](https://github.com/pichillilorenzo/flutter_inappwebview/pull/465) (thanks to [andreidiaconu](https://github.com/andreidiaconu))
 - Merge "Added missing field 'headers' which returned by WebResourceResponse.toMap()" [#490](https://github.com/pichillilorenzo/flutter_inappwebview/pull/490) (thanks to [Doflatango](https://github.com/Doflatango))

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/InAppWebView/InAppWebView.java

@@ -35,20 +35,16 @@ import android.webkit.CookieManager;
 import android.webkit.DownloadListener;
 import android.webkit.ValueCallback;
 import android.webkit.WebBackForwardList;
-import android.webkit.WebChromeClient;
 import android.webkit.WebHistoryItem;
 import android.webkit.WebSettings;
 import android.webkit.WebStorage;
-import android.webkit.WebViewClient;
 import android.widget.HorizontalScrollView;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
-import androidx.annotation.Keep;
 import androidx.annotation.RequiresApi;
 import androidx.webkit.WebViewCompat;
 import androidx.webkit.WebViewFeature;
-import androidx.webkit.WebViewRenderProcessClient;
 
 import com.pichillilorenzo.flutter_inappwebview.ContentBlocker.ContentBlocker;
 import com.pichillilorenzo.flutter_inappwebview.ContentBlocker.ContentBlockerAction;
@@ -63,9 +59,6 @@ import com.pichillilorenzo.flutter_inappwebview.Util;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.security.cert.CertificateEncodingException;
-import java.security.cert.CertificateExpiredException;
-import java.security.cert.CertificateNotYetValidException;
-import java.security.cert.CertificateParsingException;
 import java.security.cert.X509Certificate;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -131,10 +124,11 @@ final public class InAppWebView extends InputAwareWebView {
           "}";
 
   static final String contentWorldWrapperJS = "(function() {" +
-          "  var iframe = document.getElementById('$CONTENT_WORLD_NAME');" +
+          "  var iframeId = '" + JavaScriptBridgeInterface.name + "_$CONTENT_WORLD_NAME';" +
+          "  var iframe = document.getElementById(iframeId);" +
           "  if (iframe == null) {" +
           "    iframe = document.createElement('iframe');" +
-          "    iframe.id = '$CONTENT_WORLD_NAME';" +
+          "    iframe.id = iframeId;" +
           "    iframe.style = 'display: none; z-index: 0; position: absolute; width: 0px; height: 0px';" +
           "    document.body.append(iframe);" +
           "  }" +

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/InAppWebViewFlutterPlugin.java

@@ -29,6 +29,8 @@ public class InAppWebViewFlutterPlugin implements FlutterPlugin, ActivityAware {
   public static MyCookieManager myCookieManager;
   public static CredentialDatabaseHandler credentialDatabaseHandler;
   public static MyWebStorage myWebStorage;
+  public static ServiceWorkerManager serviceWorkerManager;
+  public static WebViewFeatureManager webViewFeatureManager;
   public static ValueCallback<Uri> filePathCallbackLegacy;
   public static ValueCallback<Uri[]> filePathCallback;
 
@@ -65,12 +67,17 @@ public class InAppWebViewFlutterPlugin implements FlutterPlugin, ActivityAware {
 
     platformViewRegistry.registerViewFactory(
                     "com.pichillilorenzo/flutter_inappwebview", new FlutterWebViewFactory(messenger, flutterView));
+
     inAppWebViewStatic = new InAppWebViewStatic(messenger);
     myCookieManager = new MyCookieManager(messenger);
     myWebStorage = new MyWebStorage(messenger);
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+      serviceWorkerManager = new ServiceWorkerManager(messenger);
+    }
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
       credentialDatabaseHandler = new CredentialDatabaseHandler(messenger);
     }
+    webViewFeatureManager = new WebViewFeatureManager(messenger);
   }
 
   @Override
@@ -103,6 +110,14 @@ public class InAppWebViewFlutterPlugin implements FlutterPlugin, ActivityAware {
       inAppWebViewStatic.dispose();
       inAppWebViewStatic = null;
     }
+    if (serviceWorkerManager != null && Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+      serviceWorkerManager.dispose();
+      serviceWorkerManager = null;
+    }
+    if (webViewFeatureManager != null) {
+      webViewFeatureManager.dispose();
+      webViewFeatureManager = null;
+    }
     filePathCallbackLegacy = null;
     filePathCallback = null;
   }

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/RequestPermissionHandler.java

@@ -34,7 +34,6 @@ public abstract class RequestPermissionHandler implements ActivityCompat.OnReque
 
     @Override
     public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
-        Log.d("asdasd", "\n\na asd asd \n\n");
         if ((grantResults.length > 0) && (grantResults[0] == PackageManager.PERMISSION_GRANTED)) {
             List<Runnable> callbacks = actionDictionary.get(requestCode);
             for (Runnable runnable : callbacks) {

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/ServiceWorkerManager.java

@@ -0,0 +1,156 @@
+package com.pichillilorenzo.flutter_inappwebview;
+
+import android.os.Build;
+import android.util.Log;
+import android.webkit.WebResourceRequest;
+import android.webkit.WebResourceResponse;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.RequiresApi;
+import androidx.webkit.ServiceWorkerClientCompat;
+import androidx.webkit.ServiceWorkerControllerCompat;
+import androidx.webkit.ServiceWorkerWebSettingsCompat;
+import androidx.webkit.WebViewFeature;
+
+import java.io.ByteArrayInputStream;
+import java.util.HashMap;
+import java.util.Map;
+
+import io.flutter.plugin.common.BinaryMessenger;
+import io.flutter.plugin.common.MethodCall;
+import io.flutter.plugin.common.MethodChannel;
+
+@RequiresApi(api = Build.VERSION_CODES.N)
+public class ServiceWorkerManager implements MethodChannel.MethodCallHandler {
+
+  static final String LOG_TAG = "ServiceWorkerManager";
+
+  public static MethodChannel channel;
+  @Nullable
+  public static ServiceWorkerControllerCompat serviceWorkerController;
+
+  public ServiceWorkerManager(BinaryMessenger messenger) {
+    channel = new MethodChannel(messenger, "com.pichillilorenzo/flutter_inappwebview_android_serviceworkercontroller");
+    channel.setMethodCallHandler(this);
+    if (WebViewFeature.isFeatureSupported(WebViewFeature.SERVICE_WORKER_BASIC_USAGE)) {
+      serviceWorkerController = ServiceWorkerControllerCompat.getInstance();
+      serviceWorkerController.setServiceWorkerClient(new ServiceWorkerClientCompat() {
+        @Nullable
+        @Override
+        public WebResourceResponse shouldInterceptRequest(@NonNull WebResourceRequest request) {
+          final Map<String, Object> obj = new HashMap<>();
+          obj.put("url", request.getUrl().toString());
+          obj.put("method", request.getMethod());
+          obj.put("headers", request.getRequestHeaders());
+          obj.put("isForMainFrame", request.isForMainFrame());
+          obj.put("hasGesture", request.hasGesture());
+          obj.put("isRedirect", request.isRedirect());
+
+          Util.WaitFlutterResult flutterResult;
+          try {
+            flutterResult = Util.invokeMethodAndWait(channel, "shouldInterceptRequest", obj);
+          } catch (InterruptedException e) {
+            e.printStackTrace();
+            return null;
+          }
+
+          if (flutterResult.error != null) {
+            Log.e(LOG_TAG, flutterResult.error);
+          }
+          else if (flutterResult.result != null) {
+            Map<String, Object> res = (Map<String, Object>) flutterResult.result;
+            String contentType = (String) res.get("contentType");
+            String contentEncoding = (String) res.get("contentEncoding");
+            byte[] data = (byte[]) res.get("data");
+            Map<String, String> responseHeaders = (Map<String, String>) res.get("headers");
+            Integer statusCode = (Integer) res.get("statusCode");
+            String reasonPhrase = (String) res.get("reasonPhrase");
+
+            ByteArrayInputStream inputStream = (data != null) ? new ByteArrayInputStream(data) : null;
+
+            if ((responseHeaders == null && statusCode == null && reasonPhrase == null) || Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
+              return new WebResourceResponse(contentType, contentEncoding, inputStream);
+            } else {
+              return new WebResourceResponse(contentType, contentEncoding, statusCode, reasonPhrase, responseHeaders, inputStream);
+            }
+          }
+
+          return null;
+        }
+      });
+    } else {
+      serviceWorkerController = null;
+    }
+  }
+
+  @Override
+  public void onMethodCall(MethodCall call, MethodChannel.Result result) {
+    ServiceWorkerWebSettingsCompat serviceWorkerWebSettings = (serviceWorkerController != null) ? serviceWorkerController.getServiceWorkerWebSettings() : null;
+
+    switch (call.method) {
+      case "getAllowContentAccess":
+        if (serviceWorkerWebSettings != null && WebViewFeature.isFeatureSupported(WebViewFeature.SERVICE_WORKER_CONTENT_ACCESS)) {
+          result.success(serviceWorkerWebSettings.getAllowContentAccess());
+        } else {
+          result.success(false);
+        }
+        break;
+      case "getAllowFileAccess":
+        if (serviceWorkerWebSettings != null && WebViewFeature.isFeatureSupported(WebViewFeature.SERVICE_WORKER_FILE_ACCESS)) {
+          result.success(serviceWorkerWebSettings.getAllowFileAccess());
+        } else {
+          result.success(false);
+        }
+        break;
+      case "getBlockNetworkLoads":
+        if (serviceWorkerWebSettings != null && WebViewFeature.isFeatureSupported(WebViewFeature.SERVICE_WORKER_BLOCK_NETWORK_LOADS)) {
+          result.success(serviceWorkerWebSettings.getBlockNetworkLoads());
+        } else {
+          result.success(false);
+        }
+        break;
+      case "getCacheMode":
+        if (serviceWorkerWebSettings != null && WebViewFeature.isFeatureSupported(WebViewFeature.SERVICE_WORKER_CACHE_MODE)) {
+          result.success(serviceWorkerWebSettings.getCacheMode());
+        } else {
+          result.success(null);
+        }
+        break;
+      case "setAllowContentAccess":
+        if (serviceWorkerWebSettings != null && WebViewFeature.isFeatureSupported(WebViewFeature.SERVICE_WORKER_CONTENT_ACCESS)) {
+          Boolean allow = (Boolean) call.argument("allow");
+          serviceWorkerWebSettings.setAllowContentAccess(allow);
+        }
+        result.success(true);
+        break;
+      case "setAllowFileAccess":
+        if (serviceWorkerWebSettings != null && WebViewFeature.isFeatureSupported(WebViewFeature.SERVICE_WORKER_FILE_ACCESS)) {
+          Boolean allow = (Boolean) call.argument("allow");
+          serviceWorkerWebSettings.setAllowFileAccess(allow);
+        }
+        result.success(true);
+        break;
+      case "setBlockNetworkLoads":
+        if (serviceWorkerWebSettings != null && WebViewFeature.isFeatureSupported(WebViewFeature.SERVICE_WORKER_BLOCK_NETWORK_LOADS)) {
+          Boolean flag = (Boolean) call.argument("flag");
+          serviceWorkerWebSettings.setBlockNetworkLoads(flag);
+        }
+        result.success(true);
+        break;
+      case "setCacheMode":
+        if (serviceWorkerWebSettings != null && WebViewFeature.isFeatureSupported(WebViewFeature.SERVICE_WORKER_CACHE_MODE)) {
+          Integer mode = (Integer) call.argument("mode");
+          serviceWorkerWebSettings.setCacheMode(mode);
+        }
+        result.success(true);
+        break;
+      default:
+        result.notImplemented();
+    }
+  }
+
+  public void dispose() {
+    channel.setMethodCallHandler(null);
+  }
+}

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/WebViewFeatureManager.java

@@ -0,0 +1,34 @@
+package com.pichillilorenzo.flutter_inappwebview;
+
+import androidx.webkit.WebViewFeature;
+
+import io.flutter.plugin.common.BinaryMessenger;
+import io.flutter.plugin.common.MethodCall;
+import io.flutter.plugin.common.MethodChannel;
+
+public class WebViewFeatureManager implements MethodChannel.MethodCallHandler {
+
+  static final String LOG_TAG = "WebViewFeatureManager";
+
+  public static MethodChannel channel;
+
+  public WebViewFeatureManager(BinaryMessenger messenger) {
+    channel = new MethodChannel(messenger, "com.pichillilorenzo/flutter_inappwebview_android_webviewfeature");
+    channel.setMethodCallHandler(this);
+  }
+
+  @Override
+  public void onMethodCall(MethodCall call, MethodChannel.Result result) {
+    switch (call.method) {
+      case "isFeatureSupported":
+        String feature = (String) call.argument("feature");
+        result.success(WebViewFeature.isFeatureSupported(feature));
+      default:
+        result.notImplemented();
+    }
+  }
+
+  public void dispose() {
+    channel.setMethodCallHandler(null);
+  }
+}

example/.flutter-plugins-dependencies

@@ -1 +1 @@
-{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"device_info","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/device_info-2.0.0-nullsafety.2/","dependencies":[]},{"name":"flutter_downloader","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_downloader-1.5.2/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":["device_info"]},{"name":"integration_test","path":"/Users/lorenzopichilli/flutter/.pub-cache/git/plugins-16f3281b04b0db12e609352b1c9544901392e428/packages/integration_test/","dependencies":[]},{"name":"path_provider","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider-1.6.27/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.0.1+1/","dependencies":[]},{"name":"url_launcher","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher-6.0.0-nullsafety.4/","dependencies":[]}],"android":[{"name":"device_info","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/device_info-2.0.0-nullsafety.2/","dependencies":[]},{"name":"flutter_downloader","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_downloader-1.5.2/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":["device_info"]},{"name":"integration_test","path":"/Users/lorenzopichilli/flutter/.pub-cache/git/plugins-16f3281b04b0db12e609352b1c9544901392e428/packages/integration_test/","dependencies":[]},{"name":"path_provider","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider-1.6.27/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.0.1+1/","dependencies":[]},{"name":"url_launcher","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher-6.0.0-nullsafety.4/","dependencies":[]}],"macos":[{"name":"path_provider_macos","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_macos-0.0.4+8/","dependencies":[]},{"name":"url_launcher_macos","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher_macos-0.1.0-nullsafety.2/","dependencies":[]}],"linux":[{"name":"path_provider_linux","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_linux-0.0.1+2/","dependencies":[]},{"name":"url_launcher_linux","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher_linux-0.1.0-nullsafety.3/","dependencies":[]}],"windows":[{"name":"path_provider_windows","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_windows-0.0.4+3/","dependencies":[]},{"name":"url_launcher_windows","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher_windows-0.1.0-nullsafety.2/","dependencies":[]}],"web":[]},"dependencyGraph":[{"name":"device_info","dependencies":[]},{"name":"flutter_downloader","dependencies":[]},{"name":"flutter_inappwebview","dependencies":["device_info"]},{"name":"integration_test","dependencies":[]},{"name":"path_provider","dependencies":["path_provider_macos","path_provider_linux","path_provider_windows"]},{"name":"path_provider_linux","dependencies":[]},{"name":"path_provider_macos","dependencies":[]},{"name":"path_provider_windows","dependencies":[]},{"name":"permission_handler","dependencies":[]},{"name":"url_launcher","dependencies":["url_launcher_linux","url_launcher_macos","url_launcher_windows"]},{"name":"url_launcher_linux","dependencies":[]},{"name":"url_launcher_macos","dependencies":[]},{"name":"url_launcher_windows","dependencies":[]}],"date_created":"2021-02-04 01:10:32.198308","version":"1.26.0-18.0.pre.90"}
+{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"device_info","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/device_info-2.0.0-nullsafety.2/","dependencies":[]},{"name":"flutter_downloader","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_downloader-1.5.2/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":["device_info"]},{"name":"integration_test","path":"/Users/lorenzopichilli/flutter/.pub-cache/git/plugins-16f3281b04b0db12e609352b1c9544901392e428/packages/integration_test/","dependencies":[]},{"name":"path_provider","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider-1.6.27/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.0.1+1/","dependencies":[]},{"name":"url_launcher","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher-6.0.0-nullsafety.4/","dependencies":[]}],"android":[{"name":"device_info","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/device_info-2.0.0-nullsafety.2/","dependencies":[]},{"name":"flutter_downloader","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_downloader-1.5.2/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":["device_info"]},{"name":"integration_test","path":"/Users/lorenzopichilli/flutter/.pub-cache/git/plugins-16f3281b04b0db12e609352b1c9544901392e428/packages/integration_test/","dependencies":[]},{"name":"path_provider","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider-1.6.27/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.0.1+1/","dependencies":[]},{"name":"url_launcher","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher-6.0.0-nullsafety.4/","dependencies":[]}],"macos":[{"name":"path_provider_macos","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_macos-0.0.4+8/","dependencies":[]},{"name":"url_launcher_macos","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher_macos-0.1.0-nullsafety.2/","dependencies":[]}],"linux":[{"name":"path_provider_linux","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_linux-0.0.1+2/","dependencies":[]},{"name":"url_launcher_linux","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher_linux-0.1.0-nullsafety.3/","dependencies":[]}],"windows":[{"name":"path_provider_windows","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_windows-0.0.4+3/","dependencies":[]},{"name":"url_launcher_windows","path":"/Users/lorenzopichilli/flutter/.pub-cache/hosted/pub.dartlang.org/url_launcher_windows-0.1.0-nullsafety.2/","dependencies":[]}],"web":[]},"dependencyGraph":[{"name":"device_info","dependencies":[]},{"name":"flutter_downloader","dependencies":[]},{"name":"flutter_inappwebview","dependencies":["device_info"]},{"name":"integration_test","dependencies":[]},{"name":"path_provider","dependencies":["path_provider_macos","path_provider_linux","path_provider_windows"]},{"name":"path_provider_linux","dependencies":[]},{"name":"path_provider_macos","dependencies":[]},{"name":"path_provider_windows","dependencies":[]},{"name":"permission_handler","dependencies":[]},{"name":"url_launcher","dependencies":["url_launcher_linux","url_launcher_macos","url_launcher_windows"]},{"name":"url_launcher_linux","dependencies":[]},{"name":"url_launcher_macos","dependencies":[]},{"name":"url_launcher_windows","dependencies":[]}],"date_created":"2021-02-04 21:51:34.603760","version":"1.26.0-18.0.pre.90"}

example/ios/Runner.xcodeproj/project.pbxproj

@@ -9,7 +9,7 @@
 /* Begin PBXBuildFile section */
 		020EF14E4245221B2C22ACE5 /* Pods_Runner.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = B0FC2CF7A6002799890B3102 /* Pods_Runner.framework */; };
 		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
-		25A517508F43E58C47090625 /* BuildFile in Frameworks */ = {isa = PBXBuildFile; };
+		25A517508F43E58C47090625 /* (null) in Frameworks */ = {isa = PBXBuildFile; };
 		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
 		61FF730023634CA10069C557 /* libsqlite3.tbd in Frameworks */ = {isa = PBXBuildFile; fileRef = 61FF72FF23634CA10069C557 /* libsqlite3.tbd */; };
 		74858FAF1ED2DC5600515810 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 74858FAE1ED2DC5600515810 /* AppDelegate.swift */; };
@@ -46,7 +46,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				61FF730023634CA10069C557 /* libsqlite3.tbd in Frameworks */,
-				25A517508F43E58C47090625 /* BuildFile in Frameworks */,
+				25A517508F43E58C47090625 /* (null) in Frameworks */,
 				020EF14E4245221B2C22ACE5 /* Pods_Runner.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;

example/lib/in_app_webiew_example.screen.dart

@@ -81,7 +81,7 @@ class _InAppWebViewExampleScreenState extends State<InAppWebViewExampleScreen> {
                   BoxDecoration(border: Border.all(color: Colors.blueAccent)),
                   child: InAppWebView(
                     // contextMenu: contextMenu,
-                    initialUrl: "https://flutter.dev/",
+                    initialUrl: "https://flutter.dev",
                     // initialFile: "assets/index.html",
                     initialHeaders: {},
                     initialUserScripts: UnmodifiableListView<UserScript>([
@@ -91,12 +91,14 @@ class _InAppWebViewExampleScreenState extends State<InAppWebViewExampleScreen> {
                       crossPlatform: InAppWebViewOptions(
                         useShouldOverrideUrlLoading: false,
                         mediaPlaybackRequiresUserGesture: false,
+                        clearCache: true
                       ),
                       android: AndroidInAppWebViewOptions(
                         useHybridComposition: true,
                       ),
                       ios: IOSInAppWebViewOptions(
                         allowsInlineMediaPlayback: true,
+                        // limitsNavigationsToAppBoundDomains: true // adds Service Worker API on iOS 14.0+
                       )
                     ),
                     onWebViewCreated: (controller) {

example/lib/main.dart

@@ -12,6 +12,8 @@ import 'package:flutter_inappwebview_example/in_app_browser_example.screen.dart'
 
 // InAppLocalhostServer localhostServer = new InAppLocalhostServer();
 
+AndroidServiceWorkerController serviceWorkerController = AndroidServiceWorkerController.instance();
+
 Future main() async {
   WidgetsFlutterBinding.ensureInitialized();
   // await Permission.camera.request();
@@ -19,6 +21,16 @@ Future main() async {
   if (Platform.isAndroid) {
     await AndroidInAppWebViewController.setWebContentsDebuggingEnabled(true);
   }
+
+  if (await AndroidWebViewFeature.isFeatureSupported(AndroidWebViewFeature.SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST)) {
+    serviceWorkerController.serviceWorkerClient = AndroidServiceWorkerClient(
+      shouldInterceptRequest: (request) async {
+        print(request);
+        return null;
+      },
+    );
+  }
+
   runApp(MyApp());
 }
 

lib/flutter_inappwebview.dart

@@ -37,4 +37,6 @@ export 'src/http_auth_credentials_database.dart';
 export 'src/web_storage_manager.dart';
 export 'src/context_menu.dart';
 export 'src/web_storage.dart';
-export 'src/X509Certificate/main.dart';
+export 'src/X509Certificate/main.dart';
+export 'src/android/service_worker_controller.dart';
+export 'src/android/webview_feature.dart';

lib/src/android/service_worker_controller.dart

@@ -0,0 +1,179 @@
+import 'dart:async';
+import 'package:flutter/services.dart';
+import 'webview_feature.dart';
+import '../types.dart';
+
+///Class that represents an Android-specific class that manages Service Workers used by [WebView].
+///
+///**NOTE**: available on Android 24+.
+///
+///**Official Android API**: https://developer.android.com/reference/androidx/webkit/ServiceWorkerControllerCompat
+class AndroidServiceWorkerController {
+  static AndroidServiceWorkerController? _instance;
+  static const MethodChannel _channel = const MethodChannel(
+      'com.pichillilorenzo/flutter_inappwebview_android_serviceworkercontroller');
+
+  AndroidServiceWorkerClient? serviceWorkerClient;
+
+  ///Gets the [AndroidServiceWorkerController] shared instance.
+  static AndroidServiceWorkerController instance() {
+    return (_instance != null) ? _instance! : _init();
+  }
+
+  static AndroidServiceWorkerController _init() {
+    _channel.setMethodCallHandler(_handleMethod);
+    _instance = AndroidServiceWorkerController();
+    return _instance!;
+  }
+
+  static Future<dynamic> _handleMethod(MethodCall call) async {
+    AndroidServiceWorkerController controller = AndroidServiceWorkerController.instance();
+    AndroidServiceWorkerClient? serviceWorkerClient = controller.serviceWorkerClient;
+
+    switch (call.method) {
+      case "shouldInterceptRequest":
+        String url = call.arguments["url"];
+        String method = call.arguments["method"];
+        Map<String, String>? headers =
+        call.arguments["headers"]?.cast<String, String>();
+        bool isForMainFrame = call.arguments["isForMainFrame"];
+        bool hasGesture = call.arguments["hasGesture"];
+        bool isRedirect = call.arguments["isRedirect"];
+
+        var request = new WebResourceRequest(
+            url: url,
+            method: method,
+            headers: headers,
+            isForMainFrame: isForMainFrame,
+            hasGesture: hasGesture,
+            isRedirect: isRedirect);
+
+        if (serviceWorkerClient != null && serviceWorkerClient.shouldInterceptRequest != null) {
+          return (await serviceWorkerClient.shouldInterceptRequest!(request))
+              ?.toMap();
+        }
+        break;
+      default:
+        throw UnimplementedError("Unimplemented ${call.method} method");
+    }
+
+    return null;
+  }
+
+  ///Gets whether Service Workers support content URL access.
+  ///This method should only be called if [AndroidWebViewFeature.isFeatureSupported] returns `true` for [AndroidWebViewFeature.SERVICE_WORKER_CONTENT_ACCESS].
+  ///
+  ///**NOTE**: available on Android 24+.
+  ///
+  ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/ServiceWorkerWebSettingsCompat#getAllowContentAccess()
+  static Future<bool> getAllowContentAccess() async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    return await _channel.invokeMethod('getAllowContentAccess', args);
+  }
+
+  ///Gets whether Service Workers support file access.
+  ///This method should only be called if [AndroidWebViewFeature.isFeatureSupported] returns `true` for [AndroidWebViewFeature.SERVICE_WORKER_FILE_ACCESS].
+  ///
+  ///**NOTE**: available on Android 24+.
+  ///
+  ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/ServiceWorkerWebSettingsCompat#getAllowFileAccess()
+  static Future<bool> getAllowFileAccess() async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    return await _channel.invokeMethod('getAllowFileAccess', args);
+  }
+
+  ///Gets whether Service Workers are prohibited from loading any resources from the network.
+  ///This method should only be called if [AndroidWebViewFeature.isFeatureSupported] returns `true` for [AndroidWebViewFeature.SERVICE_WORKER_BLOCK_NETWORK_LOADS].
+  ///
+  ///**NOTE**: available on Android 24+.
+  ///
+  ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/ServiceWorkerWebSettingsCompat#getBlockNetworkLoads()
+  static Future<bool> getBlockNetworkLoads() async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    return await _channel.invokeMethod('getBlockNetworkLoads', args);
+  }
+
+  ///Gets the current setting for overriding the cache mode.
+  ///This method should only be called if [AndroidWebViewFeature.isFeatureSupported] returns `true` for [AndroidWebViewFeature.SERVICE_WORKER_CACHE_MODE].
+  ///
+  ///**NOTE**: available on Android 24+.
+  ///
+  ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/ServiceWorkerWebSettingsCompat#getCacheMode()
+  static Future<AndroidCacheMode?> getCacheMode() async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    return AndroidCacheMode.fromValue(await _channel.invokeMethod('getCacheMode', args));
+  }
+
+  ///Enables or disables content URL access from Service Workers.
+  ///This method should only be called if [AndroidWebViewFeature.isFeatureSupported] returns `true` for [AndroidWebViewFeature.SERVICE_WORKER_CONTENT_ACCESS].
+  ///
+  ///**NOTE**: available on Android 24+.
+  ///
+  ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/ServiceWorkerWebSettingsCompat#setAllowContentAccess(boolean)
+  static Future<void> setAllowContentAccess(bool allow) async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent("allow", () => allow);
+    await _channel.invokeMethod('setAllowContentAccess', args);
+  }
+
+  ///Enables or disables file access within Service Workers.
+  ///This method should only be called if [AndroidWebViewFeature.isFeatureSupported] returns `true` for [AndroidWebViewFeature.SERVICE_WORKER_FILE_ACCESS].
+  ///
+  ///**NOTE**: available on Android 24+.
+  ///
+  ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/ServiceWorkerWebSettingsCompat#setAllowFileAccess(boolean)
+  static Future<void> setAllowFileAccess(bool allow) async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent("allow", () => allow);
+    await _channel.invokeMethod('setAllowFileAccess', args);
+  }
+
+  ///Sets whether Service Workers should not load resources from the network.
+  ///This method should only be called if [AndroidWebViewFeature.isFeatureSupported] returns `true` for [AndroidWebViewFeature.SERVICE_WORKER_BLOCK_NETWORK_LOADS].
+  ///
+  ///**NOTE**: available on Android 24+.
+  ///
+  ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/ServiceWorkerWebSettingsCompat#setBlockNetworkLoads(boolean)
+  static Future<void> setBlockNetworkLoads(bool flag) async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent("flag", () => flag);
+    await _channel.invokeMethod('setBlockNetworkLoads', args);
+  }
+
+  ///Overrides the way the cache is used.
+  ///This method should only be called if [AndroidWebViewFeature.isFeatureSupported] returns `true` for [AndroidWebViewFeature.SERVICE_WORKER_CACHE_MODE].
+  ///
+  ///**NOTE**: available on Android 24+.
+  ///
+  ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/ServiceWorkerWebSettingsCompat#setCacheMode(int)
+  static Future<void> setCacheMode(AndroidCacheMode mode) async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent("mode", () => mode.toValue());
+    await _channel.invokeMethod('setCacheMode', args);
+  }
+}
+
+///Class that represents an Android-specific class for clients to capture Service Worker related callbacks.
+///
+///**NOTE**: available on Android 24+.
+///
+///**Official Android API**: https://developer.android.com/reference/androidx/webkit/ServiceWorkerClientCompat
+class AndroidServiceWorkerClient {
+
+  ///Notify the host application of a resource request and allow the application to return the data.
+  ///If the return value is `null`, the Service Worker will continue to load the resource as usual.
+  ///Otherwise, the return response and data will be used.
+  ///
+  ///This method is called only if [AndroidWebViewFeature.SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST] is supported.
+  ///You can check whether that flag is supported using [AndroidWebViewFeature.isFeatureSupported].
+  ///
+  ///[request] represents an object containing the details of the request.
+  ///
+  ///**NOTE**: available on Android 24+.
+  final Future<WebResourceResponse?> Function(WebResourceRequest request)?
+    shouldInterceptRequest;
+
+  AndroidServiceWorkerClient({
+    this.shouldInterceptRequest
+  });
+}

lib/src/android/webview_feature.dart

@@ -0,0 +1,214 @@
+import 'dart:async';
+import 'package:flutter/services.dart';
+
+///Class that represents an Android-specific utility class for checking which WebView Support Library features are supported on the device.
+class AndroidWebViewFeature {
+  static const MethodChannel _channel = const MethodChannel(
+      'com.pichillilorenzo/flutter_inappwebview_android_webviewfeature');
+
+  static Future<dynamic> _handleMethod(MethodCall call) async {}
+
+  final String _value;
+
+  const AndroidWebViewFeature._internal(this._value);
+
+  static final Set<AndroidWebViewFeature> values = [
+    AndroidWebViewFeature.CREATE_WEB_MESSAGE_CHANNEL,
+    AndroidWebViewFeature.DISABLED_ACTION_MODE_MENU_ITEMS,
+    AndroidWebViewFeature.FORCE_DARK,
+    AndroidWebViewFeature.FORCE_DARK_STRATEGY,
+    AndroidWebViewFeature.GET_WEB_CHROME_CLIENT,
+    AndroidWebViewFeature.GET_WEB_VIEW_CLIENT,
+    AndroidWebViewFeature.GET_WEB_VIEW_RENDERER,
+    AndroidWebViewFeature.MULTI_PROCESS,
+    AndroidWebViewFeature.OFF_SCREEN_PRERASTER,
+    AndroidWebViewFeature.POST_WEB_MESSAGE,
+    AndroidWebViewFeature.PROXY_OVERRIDE,
+    AndroidWebViewFeature.RECEIVE_HTTP_ERROR,
+    AndroidWebViewFeature.RECEIVE_WEB_RESOURCE_ERROR,
+    AndroidWebViewFeature.SAFE_BROWSING_ALLOWLIST,
+    AndroidWebViewFeature.SAFE_BROWSING_ENABLE,
+    AndroidWebViewFeature.SAFE_BROWSING_HIT,
+    AndroidWebViewFeature.SAFE_BROWSING_PRIVACY_POLICY_URL,
+    AndroidWebViewFeature.SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY,
+    AndroidWebViewFeature.SAFE_BROWSING_RESPONSE_PROCEED,
+    AndroidWebViewFeature.SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL,
+    AndroidWebViewFeature.SAFE_BROWSING_WHITELIST,
+    AndroidWebViewFeature.SERVICE_WORKER_BASIC_USAGE,
+    AndroidWebViewFeature.SERVICE_WORKER_BLOCK_NETWORK_LOADS,
+    AndroidWebViewFeature.SERVICE_WORKER_CACHE_MODE,
+    AndroidWebViewFeature.SERVICE_WORKER_CONTENT_ACCESS,
+    AndroidWebViewFeature.SERVICE_WORKER_FILE_ACCESS,
+    AndroidWebViewFeature.SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST,
+    AndroidWebViewFeature.SHOULD_OVERRIDE_WITH_REDIRECTS,
+    AndroidWebViewFeature.START_SAFE_BROWSING,
+    AndroidWebViewFeature.TRACING_CONTROLLER_BASIC_USAGE,
+    AndroidWebViewFeature.VISUAL_STATE_CALLBACK,
+    AndroidWebViewFeature.WEB_MESSAGE_CALLBACK_ON_MESSAGE,
+    AndroidWebViewFeature.WEB_MESSAGE_LISTENER,
+    AndroidWebViewFeature.WEB_MESSAGE_PORT_CLOSE,
+    AndroidWebViewFeature.WEB_MESSAGE_PORT_POST_MESSAGE,
+    AndroidWebViewFeature.WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK,
+    AndroidWebViewFeature.WEB_RESOURCE_ERROR_GET_CODE,
+    AndroidWebViewFeature.WEB_RESOURCE_ERROR_GET_DESCRIPTION,
+    AndroidWebViewFeature.WEB_RESOURCE_REQUEST_IS_REDIRECT,
+    AndroidWebViewFeature.WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE,
+    AndroidWebViewFeature.WEB_VIEW_RENDERER_TERMINATE,
+  ].toSet();
+
+  static AndroidWebViewFeature? fromValue(String? value) {
+    if (value != null) {
+      try {
+        return AndroidWebViewFeature.values.firstWhere(
+                (element) => element.toValue() == value);
+      } catch (e) {
+        return null;
+      }
+    }
+    return null;
+  }
+
+  String toValue() => _value;
+
+  @override
+  String toString() => _value;
+
+  ///
+  static const CREATE_WEB_MESSAGE_CHANNEL = const AndroidWebViewFeature._internal("CREATE_WEB_MESSAGE_CHANNEL");
+
+  ///
+  static const DISABLED_ACTION_MODE_MENU_ITEMS = const AndroidWebViewFeature._internal("DISABLED_ACTION_MODE_MENU_ITEMS");
+
+  ///
+  static const FORCE_DARK = const AndroidWebViewFeature._internal("FORCE_DARK");
+
+  ///
+  static const FORCE_DARK_STRATEGY = const AndroidWebViewFeature._internal("FORCE_DARK_STRATEGY");
+
+  ///
+  static const GET_WEB_CHROME_CLIENT = const AndroidWebViewFeature._internal("GET_WEB_CHROME_CLIENT");
+
+  ///
+  static const GET_WEB_VIEW_CLIENT = const AndroidWebViewFeature._internal("GET_WEB_VIEW_CLIENT");
+
+  ///
+  static const GET_WEB_VIEW_RENDERER = const AndroidWebViewFeature._internal("GET_WEB_VIEW_RENDERER");
+
+  ///
+  static const MULTI_PROCESS = const AndroidWebViewFeature._internal("MULTI_PROCESS");
+
+  ///
+  static const OFF_SCREEN_PRERASTER = const AndroidWebViewFeature._internal("OFF_SCREEN_PRERASTER");
+
+  ///
+  static const POST_WEB_MESSAGE = const AndroidWebViewFeature._internal("POST_WEB_MESSAGE");
+
+  ///
+  static const PROXY_OVERRIDE = const AndroidWebViewFeature._internal("PROXY_OVERRIDE");
+
+  ///
+  static const RECEIVE_HTTP_ERROR = const AndroidWebViewFeature._internal("RECEIVE_HTTP_ERROR");
+
+  ///
+  static const RECEIVE_WEB_RESOURCE_ERROR = const AndroidWebViewFeature._internal("RECEIVE_WEB_RESOURCE_ERROR");
+
+  ///
+  static const SAFE_BROWSING_ALLOWLIST = const AndroidWebViewFeature._internal("SAFE_BROWSING_ALLOWLIST");
+
+  ///
+  static const SAFE_BROWSING_ENABLE = const AndroidWebViewFeature._internal("SAFE_BROWSING_ENABLE");
+
+  ///
+  static const SAFE_BROWSING_HIT = const AndroidWebViewFeature._internal("SAFE_BROWSING_HIT");
+
+  ///
+  static const SAFE_BROWSING_PRIVACY_POLICY_URL = const AndroidWebViewFeature._internal("SAFE_BROWSING_PRIVACY_POLICY_URL");
+
+  ///
+  static const SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY = const AndroidWebViewFeature._internal("SAFE_BROWSING_RESPONSE_BACK_TO_SAFETY");
+
+  ///
+  static const SAFE_BROWSING_RESPONSE_PROCEED = const AndroidWebViewFeature._internal("SAFE_BROWSING_RESPONSE_PROCEED");
+
+  ///
+  static const SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL = const AndroidWebViewFeature._internal("SAFE_BROWSING_RESPONSE_SHOW_INTERSTITIAL");
+
+  ///
+  static const SAFE_BROWSING_WHITELIST = const AndroidWebViewFeature._internal("SAFE_BROWSING_WHITELIST");
+
+  ///
+  static const SERVICE_WORKER_BASIC_USAGE = const AndroidWebViewFeature._internal("SERVICE_WORKER_BASIC_USAGE");
+
+  ///
+  static const SERVICE_WORKER_BLOCK_NETWORK_LOADS = const AndroidWebViewFeature._internal("SERVICE_WORKER_BLOCK_NETWORK_LOADS");
+
+  ///
+  static const SERVICE_WORKER_CACHE_MODE = const AndroidWebViewFeature._internal("SERVICE_WORKER_CACHE_MODE");
+
+  ///
+  static const SERVICE_WORKER_CONTENT_ACCESS = const AndroidWebViewFeature._internal("SERVICE_WORKER_CONTENT_ACCESS");
+
+  ///
+  static const SERVICE_WORKER_FILE_ACCESS = const AndroidWebViewFeature._internal("SERVICE_WORKER_FILE_ACCESS");
+
+  ///
+  static const SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST = const AndroidWebViewFeature._internal("SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST");
+
+  ///
+  static const SHOULD_OVERRIDE_WITH_REDIRECTS = const AndroidWebViewFeature._internal("SHOULD_OVERRIDE_WITH_REDIRECTS");
+
+  ///
+  static const START_SAFE_BROWSING = const AndroidWebViewFeature._internal("START_SAFE_BROWSING");
+
+  ///
+  static const TRACING_CONTROLLER_BASIC_USAGE = const AndroidWebViewFeature._internal("TRACING_CONTROLLER_BASIC_USAGE");
+
+  ///
+  static const VISUAL_STATE_CALLBACK = const AndroidWebViewFeature._internal("VISUAL_STATE_CALLBACK");
+
+  ///
+  static const WEB_MESSAGE_CALLBACK_ON_MESSAGE = const AndroidWebViewFeature._internal("WEB_MESSAGE_CALLBACK_ON_MESSAGE");
+
+  ///
+  static const WEB_MESSAGE_LISTENER = const AndroidWebViewFeature._internal("WEB_MESSAGE_LISTENER");
+
+  ///
+  static const WEB_MESSAGE_PORT_CLOSE = const AndroidWebViewFeature._internal("WEB_MESSAGE_PORT_CLOSE");
+
+  ///
+  static const WEB_MESSAGE_PORT_POST_MESSAGE = const AndroidWebViewFeature._internal("WEB_MESSAGE_PORT_POST_MESSAGE");
+
+  ///
+  static const WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK = const AndroidWebViewFeature._internal("WEB_MESSAGE_PORT_SET_MESSAGE_CALLBACK");
+
+  ///
+  static const WEB_RESOURCE_ERROR_GET_CODE = const AndroidWebViewFeature._internal("WEB_RESOURCE_ERROR_GET_CODE");
+
+  ///
+  static const WEB_RESOURCE_ERROR_GET_DESCRIPTION = const AndroidWebViewFeature._internal("WEB_RESOURCE_ERROR_GET_DESCRIPTION");
+
+  ///
+  static const WEB_RESOURCE_REQUEST_IS_REDIRECT = const AndroidWebViewFeature._internal("WEB_RESOURCE_REQUEST_IS_REDIRECT");
+
+  ///
+  static const WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE = const AndroidWebViewFeature._internal("WEB_VIEW_RENDERER_CLIENT_BASIC_USAGE");
+
+  ///
+  static const WEB_VIEW_RENDERER_TERMINATE = const AndroidWebViewFeature._internal("WEB_VIEW_RENDERER_TERMINATE");
+
+  bool operator ==(value) => value == _value;
+
+  @override
+  int get hashCode => _value.hashCode;
+
+  ///Return whether a feature is supported at run-time. On devices running Android version `Build.VERSION_CODES.LOLLIPOP` and higher,
+  ///this will check whether a feature is supported, depending on the combination of the desired feature, the Android version of device,
+  ///and the WebView APK on the device. If running on a device with a lower API level, this will always return `false`.
+  ///
+  ///**Official Android API**: https://developer.android.com/reference/androidx/webkit/WebViewFeature#isFeatureSupported(java.lang.String)
+  static Future<bool> isFeatureSupported(AndroidWebViewFeature feature) async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent("feature", () => feature.toValue());
+    return await _channel.invokeMethod('isFeatureSupported', args);
+  }
+}

lib/src/in_app_webview_controller.dart

@@ -929,6 +929,7 @@ class InAppWebViewController {
       default:
         throw UnimplementedError("Unimplemented ${call.method} method");
     }
+    return null;
   }
 
   ///Gets the URL for the current page.

lib/src/types.dart

@@ -4601,7 +4601,7 @@ class UserScript {
 ///
 ///**NOTE for iOS 14.0+**: this class represents the native [WKContentWorld](https://developer.apple.com/documentation/webkit/wkcontentworld) class.
 ///
-///**NOTE for Android**: it will create and append an `<iframe>` HTML element with `id` equals to [name] to the webpage's content that contains only the scripts
+///**NOTE for Android**: it will create and append an `<iframe>` HTML element with `id` equals to `flutter_inappwebview_[name]` to the webpage's content that contains only the scripts
 ///in order to define a new scope of execution for JavaScript code. Unfortunately, there isn't any other way to do it.
 ///For any [ContentWorld], except [ContentWorld.page], if you need to access to the `window` or `document` global Object,
 ///you need to use `window.top` and `window.top.document` because the code runs inside an `<iframe>`.
@@ -4620,4 +4620,4 @@ class ContentWorld {
   ///Be careful when manipulating variables in this content world.
   ///If you modify a variable with the same name as one the webpage uses, you may unintentionally disrupt the normal operation of that page.
   static ContentWorld page = ContentWorld.world(name: "page");
-}
+}