merge

CHANGELOG.md

@@ -7,6 +7,19 @@
 - Added support for `onPermissionRequest` event on iOS 15.0+
 - Updated `getMetaThemeColor` on iOS 15.0+
 
+## 5.4.1+1
+
+- Fixed Android default context menu over custom context menu on API Level 31+ 
+
+## 5.4.1
+
+- Managed iOS native `detachFromEngine` flutter plugin event and updated `dispose` methods
+- Updated Android native `HeadlessInAppWebViewManager.dispose` and `HeadlessInAppWebView.dispose` methods
+
+## 5.4.0+3
+
+- Fixed Android error in some cases when calling `setServiceWorkerClient` java method on `ServiceWorkerManager` initialization
+
 ## 5.4.0+2
 
 - Fixed Android `ChromeCustomTabsActivity` not responding to the `ActionBroadcastReceiver`

README.md

@@ -59,6 +59,4 @@ Add `flutter_inappwebview` as a [dependency in your pubspec.yaml file](https://f
 
 ## Support
 
-Use the [develop branch](https://github.com/pichillilorenzo/flutter_inappwebview/tree/develop) when making a pull request.
-
 Did you find this plugin useful? Please consider to [make a donation](https://inappwebview.dev/donate/) to help improve it!

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

@@ -2,8 +2,8 @@ package com.pichillilorenzo.flutter_inappwebview;
 
 import java.util.Map;
 
-public interface IWebViewSettings<T> {
-  public IWebViewSettings parse(Map<String, Object> settings);
+public interface ISettings<T> {
+  public ISettings parse(Map<String, Object> settings);
   public Map<String, Object> toMap();
   public Map<String, Object> getRealSettings(T obj);
 }

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

@@ -38,50 +38,6 @@ public class ServiceWorkerManager implements MethodChannel.MethodCallHandler {
     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;
     }
@@ -92,6 +48,13 @@ public class ServiceWorkerManager implements MethodChannel.MethodCallHandler {
     ServiceWorkerWebSettingsCompat serviceWorkerWebSettings = (serviceWorkerController != null) ? serviceWorkerController.getServiceWorkerWebSettings() : null;
 
     switch (call.method) {
+      case "setServiceWorkerClient":
+        {
+          Boolean isNull = (Boolean) call.argument("isNull");
+          setServiceWorkerClient(isNull);
+        }
+        result.success(true);
+        break;
       case "getAllowContentAccess":
         if (serviceWorkerWebSettings != null && WebViewFeature.isFeatureSupported(WebViewFeature.SERVICE_WORKER_CONTENT_ACCESS)) {
           result.success(serviceWorkerWebSettings.getAllowContentAccess());
@@ -152,9 +115,62 @@ public class ServiceWorkerManager implements MethodChannel.MethodCallHandler {
         result.notImplemented();
     }
   }
+  
+  private void setServiceWorkerClient(Boolean isNull) {
+    if (serviceWorkerController != null) {
+      serviceWorkerController.setServiceWorkerClient(isNull ? null : 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;
+        }
+      }); 
+    }
+  }
 
   public void dispose() {
     channel.setMethodCallHandler(null);
+    if (serviceWorkerController != null) {
+      serviceWorkerController.setServiceWorkerClient(null);
+      serviceWorkerController = null; 
+    }
     plugin = null;
   }
 }

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/chrome_custom_tabs/ChromeCustomTabsSettings.java

@@ -7,14 +7,14 @@ import androidx.browser.customtabs.CustomTabsIntent;
 import androidx.browser.trusted.ScreenOrientation;
 import androidx.browser.trusted.TrustedWebActivityDisplayMode;
 
-import com.pichillilorenzo.flutter_inappwebview.IWebViewSettings;
+import com.pichillilorenzo.flutter_inappwebview.ISettings;
 
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-public class ChromeCustomTabsSettings implements IWebViewSettings<ChromeCustomTabsActivity> {
+public class ChromeCustomTabsSettings implements ISettings<ChromeCustomTabsActivity> {
 
   final static String LOG_TAG = "ChromeCustomTabsSettings";
 

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/headless_in_app_webview/HeadlessInAppWebView.java

@@ -110,12 +110,16 @@ public class HeadlessInAppWebView implements MethodChannel.MethodCallHandler {
   public void dispose() {
     channel.setMethodCallHandler(null);
     HeadlessInAppWebViewManager.webViews.remove(id);
-    ViewGroup contentView = (ViewGroup) plugin.activity.findViewById(android.R.id.content);
-    ViewGroup mainView = (ViewGroup) (contentView).getChildAt(0);
-    if (mainView != null) {
-      mainView.removeView(flutterWebView.getView());
+    if (plugin != null) {
+      ViewGroup contentView = (ViewGroup) plugin.activity.findViewById(android.R.id.content);
+      ViewGroup mainView = (ViewGroup) (contentView).getChildAt(0);
+      if (mainView != null && flutterWebView != null) {
+        mainView.removeView(flutterWebView.getView());
+      }
+    }
+    if (flutterWebView != null) {
+      flutterWebView.dispose();
     }
-    flutterWebView.dispose();
     flutterWebView = null;
     plugin = null;
   }

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/headless_in_app_webview/HeadlessInAppWebViewManager.java

@@ -26,7 +26,9 @@ import androidx.annotation.Nullable;
 import com.pichillilorenzo.flutter_inappwebview.InAppWebViewFlutterPlugin;
 import com.pichillilorenzo.flutter_inappwebview.in_app_webview.FlutterWebView;
 
+import java.util.Collection;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 import io.flutter.plugin.common.MethodCall;
@@ -77,6 +79,10 @@ public class HeadlessInAppWebViewManager implements MethodChannel.MethodCallHand
 
   public void dispose() {
     channel.setMethodCallHandler(null);
+    Collection<HeadlessInAppWebView> headlessInAppWebViews = webViews.values();
+    for (HeadlessInAppWebView headlessInAppWebView : headlessInAppWebViews) {
+      headlessInAppWebView.dispose();
+    }
     webViews.clear();
   }
 }

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/in_app_browser/InAppBrowserSettings.java

@@ -2,13 +2,13 @@ package com.pichillilorenzo.flutter_inappwebview.in_app_browser;
 
 import androidx.annotation.Nullable;
 
-import com.pichillilorenzo.flutter_inappwebview.IWebViewSettings;
+import com.pichillilorenzo.flutter_inappwebview.ISettings;
 import com.pichillilorenzo.flutter_inappwebview.R;
 
 import java.util.HashMap;
 import java.util.Map;
 
-public class InAppBrowserSettings implements IWebViewSettings<InAppBrowserActivity> {
+public class InAppBrowserSettings implements ISettings<InAppBrowserActivity> {
 
   public static final String LOG_TAG = "InAppBrowserSettings";
 

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/in_app_webview/ContextMenuSettings.java

@@ -1,16 +1,16 @@
 package com.pichillilorenzo.flutter_inappwebview.in_app_webview;
 
-import com.pichillilorenzo.flutter_inappwebview.IWebViewSettings;
+import com.pichillilorenzo.flutter_inappwebview.ISettings;
 
 import java.util.HashMap;
 import java.util.Map;
 
-public class ContextMenuOptions implements IWebViewSettings<Object> {
+public class ContextMenuSettings implements ISettings<Object> {
   public static final String LOG_TAG = "ContextMenuOptions";
 
   public Boolean hideDefaultSystemContextMenuItems = false;
 
-  public ContextMenuOptions parse(Map<String, Object> options) {
+  public ContextMenuSettings parse(Map<String, Object> options) {
     for (Map.Entry<String, Object> pair : options.entrySet()) {
       String key = pair.getKey();
       Object value = pair.getValue();

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

@@ -54,8 +54,6 @@ import androidx.webkit.WebViewCompat;
 import androidx.webkit.WebViewFeature;
 
 import com.pichillilorenzo.flutter_inappwebview.InAppWebViewFlutterPlugin;
-import com.pichillilorenzo.flutter_inappwebview.types.DownloadStartRequest;
-import com.pichillilorenzo.flutter_inappwebview.types.InAppWebViewInterface;
 import com.pichillilorenzo.flutter_inappwebview.JavaScriptBridgeInterface;
 import com.pichillilorenzo.flutter_inappwebview.R;
 import com.pichillilorenzo.flutter_inappwebview.Util;
@@ -76,6 +74,8 @@ import com.pichillilorenzo.flutter_inappwebview.plugin_scripts_js.PrintJS;
 import com.pichillilorenzo.flutter_inappwebview.plugin_scripts_js.PromisePolyfillJS;
 import com.pichillilorenzo.flutter_inappwebview.pull_to_refresh.PullToRefreshLayout;
 import com.pichillilorenzo.flutter_inappwebview.types.ContentWorld;
+import com.pichillilorenzo.flutter_inappwebview.types.DownloadStartRequest;
+import com.pichillilorenzo.flutter_inappwebview.types.InAppWebViewInterface;
 import com.pichillilorenzo.flutter_inappwebview.types.PluginScript;
 import com.pichillilorenzo.flutter_inappwebview.types.PreferredContentModeOptionType;
 import com.pichillilorenzo.flutter_inappwebview.types.URLRequest;
@@ -1356,8 +1356,16 @@ final public class InAppWebView extends InputAwareWebView implements InAppWebVie
     }
 
     Menu actionMenu = actionMode.getMenu();
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+      actionMode.hide(3000);
+    }
+    List<MenuItem> defaultMenuItems = new ArrayList<>();
+    for (int i = 0; i < actionMenu.size(); i++) {
+      defaultMenuItems.add(actionMenu.getItem(i));
+    }
+    actionMenu.clear();
+    actionMode.finish();
     if (customSettings.disableContextMenu) {
-      actionMenu.clear();
       return actionMode;
     }
 
@@ -1367,19 +1375,18 @@ final public class InAppWebView extends InputAwareWebView implements InAppWebVie
     LinearLayout menuItemListLayout = (LinearLayout) horizontalScrollView.getChildAt(0);
 
     List<Map<String, Object>> customMenuItems = new ArrayList<>();
-    ContextMenuOptions contextMenuOptions = new ContextMenuOptions();
+    ContextMenuSettings contextMenuSettings = new ContextMenuSettings();
     if (contextMenu != null) {
       customMenuItems = (List<Map<String, Object>>) contextMenu.get("menuItems");
-      Map<String, Object> contextMenuOptionsMap = (Map<String, Object>) contextMenu.get("options");
-      if (contextMenuOptionsMap != null) {
-        contextMenuOptions.parse(contextMenuOptionsMap);
+      Map<String, Object> contextMenuSettingsMap = (Map<String, Object>) contextMenu.get("settings");
+      if (contextMenuSettingsMap != null) {
+        contextMenuSettings.parse(contextMenuSettingsMap);
       }
     }
     customMenuItems = customMenuItems == null ? new ArrayList<Map<String, Object>>() : customMenuItems;
 
-    if (contextMenuOptions.hideDefaultSystemContextMenuItems == null || !contextMenuOptions.hideDefaultSystemContextMenuItems) {
-      for (int i = 0; i < actionMenu.size(); i++) {
-        final MenuItem menuItem = actionMenu.getItem(i);
+    if (contextMenuSettings.hideDefaultSystemContextMenuItems == null || !contextMenuSettings.hideDefaultSystemContextMenuItems) {
+      for (final MenuItem menuItem : defaultMenuItems) {
         final int itemId = menuItem.getItemId();
         final String itemTitle = menuItem.getTitle().toString();
 
@@ -1393,6 +1400,7 @@ final public class InAppWebView extends InputAwareWebView implements InAppWebVie
             callback.onActionItemClicked(actionMode, menuItem);
 
             Map<String, Object> obj = new HashMap<>();
+            obj.put("id", itemId);
             obj.put("androidId", itemId);
             obj.put("iosId", null);
             obj.put("title", itemTitle);
@@ -1406,7 +1414,7 @@ final public class InAppWebView extends InputAwareWebView implements InAppWebVie
     }
 
     for (final Map<String, Object> menuItem : customMenuItems) {
-      final int itemId = (int) menuItem.get("androidId");
+      final int itemId = (int) menuItem.get("id");
       final String itemTitle = (String) menuItem.get("title");
       TextView text = (TextView) LayoutInflater.from(this.getContext())
               .inflate(R.layout.floating_action_mode_item, this, false);
@@ -1417,6 +1425,7 @@ final public class InAppWebView extends InputAwareWebView implements InAppWebVie
           hideContextMenu();
 
           Map<String, Object> obj = new HashMap<>();
+          obj.put("id", itemId);
           obj.put("androidId", itemId);
           obj.put("iosId", null);
           obj.put("title", itemTitle);
@@ -1456,7 +1465,6 @@ final public class InAppWebView extends InputAwareWebView implements InAppWebVie
         checkContextMenuShouldBeClosedTask.run();
       }
     }
-    actionMenu.clear();
 
     return actionMode;
   }

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/in_app_webview/InAppWebViewSettings.java

@@ -6,7 +6,7 @@ import android.webkit.WebSettings;
 
 import androidx.annotation.Nullable;
 
-import com.pichillilorenzo.flutter_inappwebview.IWebViewSettings;
+import com.pichillilorenzo.flutter_inappwebview.ISettings;
 import com.pichillilorenzo.flutter_inappwebview.types.InAppWebViewInterface;
 import com.pichillilorenzo.flutter_inappwebview.types.PreferredContentModeOptionType;
 
@@ -18,7 +18,7 @@ import java.util.Map;
 import static android.webkit.WebSettings.LayoutAlgorithm.NARROW_COLUMNS;
 import static android.webkit.WebSettings.LayoutAlgorithm.NORMAL;
 
-public class InAppWebViewSettings implements IWebViewSettings<InAppWebViewInterface> {
+public class InAppWebViewSettings implements ISettings<InAppWebViewInterface> {
 
   public static final String LOG_TAG = "InAppWebViewSettings";
 

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/pull_to_refresh/PullToRefreshSettings.java

@@ -2,12 +2,12 @@ package com.pichillilorenzo.flutter_inappwebview.pull_to_refresh;
 
 import androidx.annotation.Nullable;
 
-import com.pichillilorenzo.flutter_inappwebview.IWebViewSettings;
+import com.pichillilorenzo.flutter_inappwebview.ISettings;
 
 import java.util.HashMap;
 import java.util.Map;
 
-public class PullToRefreshSettings implements IWebViewSettings<PullToRefreshLayout> {
+public class PullToRefreshSettings implements ISettings<PullToRefreshLayout> {
   public static final String LOG_TAG = "PullToRefreshSettings";
 
   public Boolean enabled = true;

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/types/NavigationAction.java

@@ -25,6 +25,7 @@ public class NavigationAction {
     navigationActionMap.put("navigationType", null);
     navigationActionMap.put("sourceFrame", null);
     navigationActionMap.put("targetFrame", null);
+    navigationActionMap.put("shouldPerformDownload", null);
     return navigationActionMap;
   }
 

example/integration_test/webview_flutter_test.dart

@@ -77,7 +77,7 @@ void main() {
     AndroidInAppWebViewController.setWebContentsDebuggingEnabled(true);
   }
 
- group('InAppWebView', () {
+  group('InAppWebView', () {
     testWidgets('initialUrlRequest', (WidgetTester tester) async {
       final Completer controllerCompleter = Completer<InAppWebViewController>();
       await tester.pumpWidget(
@@ -1709,13 +1709,14 @@ void main() {
 
     group('intercept ajax request', () {
       testWidgets('send string data', (WidgetTester tester) async {
-        final Completer controllerCompleter = Completer<InAppWebViewController>();
+        final Completer controllerCompleter =
+            Completer<InAppWebViewController>();
         final Completer shouldInterceptAjaxPostRequestCompleter =
-        Completer<void>();
+            Completer<void>();
         final Completer<Map<String, dynamic>> onAjaxReadyStateChangeCompleter =
-        Completer<Map<String, dynamic>>();
+            Completer<Map<String, dynamic>>();
         final Completer<Map<String, dynamic>> onAjaxProgressCompleter =
-        Completer<Map<String, dynamic>>();
+            Completer<Map<String, dynamic>>();
         await tester.pumpWidget(
           Directionality(
             textDirection: TextDirection.ltr,
@@ -1745,9 +1746,9 @@ void main() {
                     """),
               initialOptions: InAppWebViewGroupOptions(
                   crossPlatform: InAppWebViewOptions(
-                    clearCache: true,
-                    useShouldInterceptAjaxRequest: true,
-                  )),
+                clearCache: true,
+                useShouldInterceptAjaxRequest: true,
+              )),
               onWebViewCreated: (controller) {
                 controllerCompleter.complete(controller);
               },
@@ -1780,9 +1781,9 @@ void main() {
 
         await shouldInterceptAjaxPostRequestCompleter.future;
         final Map<String, dynamic> onAjaxReadyStateChangeValue =
-        await onAjaxReadyStateChangeCompleter.future;
+            await onAjaxReadyStateChangeCompleter.future;
         final Map<String, dynamic> onAjaxProgressValue =
-        await onAjaxProgressCompleter.future;
+            await onAjaxProgressCompleter.future;
 
         expect(
             mapEquals(onAjaxReadyStateChangeValue,
@@ -1795,13 +1796,14 @@ void main() {
       });
 
       testWidgets('send json data', (WidgetTester tester) async {
-        final Completer controllerCompleter = Completer<InAppWebViewController>();
+        final Completer controllerCompleter =
+            Completer<InAppWebViewController>();
         final Completer shouldInterceptAjaxPostRequestCompleter =
-        Completer<void>();
+            Completer<void>();
         final Completer<Map<String, dynamic>> onAjaxReadyStateChangeCompleter =
-        Completer<Map<String, dynamic>>();
+            Completer<Map<String, dynamic>>();
         final Completer<Map<String, dynamic>> onAjaxProgressCompleter =
-        Completer<Map<String, dynamic>>();
+            Completer<Map<String, dynamic>>();
         await tester.pumpWidget(
           Directionality(
             textDirection: TextDirection.ltr,
@@ -1835,15 +1837,16 @@ void main() {
                     """),
               initialOptions: InAppWebViewGroupOptions(
                   crossPlatform: InAppWebViewOptions(
-                    clearCache: true,
-                    useShouldInterceptAjaxRequest: true,
-                  )),
+                clearCache: true,
+                useShouldInterceptAjaxRequest: true,
+              )),
               onWebViewCreated: (controller) {
                 controllerCompleter.complete(controller);
               },
               shouldInterceptAjaxRequest: (controller, ajaxRequest) async {
                 String data = ajaxRequest.data;
-                assert(data.contains('"firstname":"Foo"') && data.contains('"lastname":"Bar"'));
+                assert(data.contains('"firstname":"Foo"') &&
+                    data.contains('"lastname":"Bar"'));
 
                 ajaxRequest.responseType = 'json';
                 ajaxRequest.data = '{"firstname": "Foo2", "lastname": "Bar2"}';
@@ -1871,9 +1874,9 @@ void main() {
 
         await shouldInterceptAjaxPostRequestCompleter.future;
         final Map<String, dynamic> onAjaxReadyStateChangeValue =
-        await onAjaxReadyStateChangeCompleter.future;
+            await onAjaxReadyStateChangeCompleter.future;
         final Map<String, dynamic> onAjaxProgressValue =
-        await onAjaxProgressCompleter.future;
+            await onAjaxProgressCompleter.future;
 
         expect(
             mapEquals(onAjaxReadyStateChangeValue,
@@ -1886,13 +1889,14 @@ void main() {
       });
 
       testWidgets('send URLSearchParams data', (WidgetTester tester) async {
-        final Completer controllerCompleter = Completer<InAppWebViewController>();
+        final Completer controllerCompleter =
+            Completer<InAppWebViewController>();
         final Completer shouldInterceptAjaxPostRequestCompleter =
-        Completer<void>();
+            Completer<void>();
         final Completer<Map<String, dynamic>> onAjaxReadyStateChangeCompleter =
-        Completer<Map<String, dynamic>>();
+            Completer<Map<String, dynamic>>();
         final Completer<Map<String, dynamic>> onAjaxProgressCompleter =
-        Completer<Map<String, dynamic>>();
+            Completer<Map<String, dynamic>>();
         await tester.pumpWidget(
           Directionality(
             textDirection: TextDirection.ltr,
@@ -1924,9 +1928,9 @@ void main() {
                     """),
               initialOptions: InAppWebViewGroupOptions(
                   crossPlatform: InAppWebViewOptions(
-                    clearCache: true,
-                    useShouldInterceptAjaxRequest: true,
-                  )),
+                clearCache: true,
+                useShouldInterceptAjaxRequest: true,
+              )),
               onWebViewCreated: (controller) {
                 controllerCompleter.complete(controller);
               },
@@ -1959,9 +1963,9 @@ void main() {
 
         await shouldInterceptAjaxPostRequestCompleter.future;
         final Map<String, dynamic> onAjaxReadyStateChangeValue =
-        await onAjaxReadyStateChangeCompleter.future;
+            await onAjaxReadyStateChangeCompleter.future;
         final Map<String, dynamic> onAjaxProgressValue =
-        await onAjaxProgressCompleter.future;
+            await onAjaxProgressCompleter.future;
 
         expect(
             mapEquals(onAjaxReadyStateChangeValue,
@@ -1974,13 +1978,14 @@ void main() {
       });
 
       testWidgets('send FormData', (WidgetTester tester) async {
-        final Completer controllerCompleter = Completer<InAppWebViewController>();
+        final Completer controllerCompleter =
+            Completer<InAppWebViewController>();
         final Completer shouldInterceptAjaxPostRequestCompleter =
-        Completer<void>();
+            Completer<void>();
         final Completer<Map<String, dynamic>> onAjaxReadyStateChangeCompleter =
-        Completer<Map<String, dynamic>>();
+            Completer<Map<String, dynamic>>();
         final Completer<Map<String, dynamic>> onAjaxProgressCompleter =
-        Completer<Map<String, dynamic>>();
+            Completer<Map<String, dynamic>>();
         await tester.pumpWidget(
           Directionality(
             textDirection: TextDirection.ltr,
@@ -2012,9 +2017,9 @@ void main() {
                     """),
               initialOptions: InAppWebViewGroupOptions(
                   crossPlatform: InAppWebViewOptions(
-                    clearCache: true,
-                    useShouldInterceptAjaxRequest: true,
-                  )),
+                clearCache: true,
+                useShouldInterceptAjaxRequest: true,
+              )),
               onWebViewCreated: (controller) {
                 controllerCompleter.complete(controller);
               },
@@ -2025,7 +2030,9 @@ void main() {
                 var bodyString = String.fromCharCodes(body);
                 assert(bodyString.indexOf("WebKitFormBoundary") >= 0);
 
-                ajaxRequest.data = utf8.encode(bodyString.replaceFirst("Foo", "Foo2").replaceFirst("Bar", "Bar2"));
+                ajaxRequest.data = utf8.encode(bodyString
+                    .replaceFirst("Foo", "Foo2")
+                    .replaceFirst("Bar", "Bar2"));
                 ajaxRequest.responseType = 'json';
                 shouldInterceptAjaxPostRequestCompleter.complete(controller);
                 return ajaxRequest;
@@ -2051,9 +2058,9 @@ void main() {
 
         await shouldInterceptAjaxPostRequestCompleter.future;
         final Map<String, dynamic> onAjaxReadyStateChangeValue =
-        await onAjaxReadyStateChangeCompleter.future;
+            await onAjaxReadyStateChangeCompleter.future;
         final Map<String, dynamic> onAjaxProgressValue =
-        await onAjaxProgressCompleter.future;
+            await onAjaxProgressCompleter.future;
 
         expect(
             mapEquals(onAjaxReadyStateChangeValue,
@@ -2068,11 +2075,12 @@ void main() {
 
     group('intercept fetch request', () {
       testWidgets('send string data', (WidgetTester tester) async {
-        final Completer controllerCompleter = Completer<InAppWebViewController>();
+        final Completer controllerCompleter =
+            Completer<InAppWebViewController>();
         final Completer<Map<String, dynamic>> fetchPostCompleter =
-        Completer<Map<String, dynamic>>();
+            Completer<Map<String, dynamic>>();
         final Completer<void> shouldInterceptFetchPostRequestCompleter =
-        Completer<void>();
+            Completer<void>();
         await tester.pumpWidget(
           Directionality(
             textDirection: TextDirection.ltr,
@@ -2113,9 +2121,9 @@ void main() {
                     """),
               initialOptions: InAppWebViewGroupOptions(
                   crossPlatform: InAppWebViewOptions(
-                    clearCache: true,
-                    useShouldInterceptFetchRequest: true,
-                  )),
+                clearCache: true,
+                useShouldInterceptFetchRequest: true,
+              )),
               onWebViewCreated: (controller) {
                 controllerCompleter.complete(controller);
 
@@ -2147,11 +2155,12 @@ void main() {
       });
 
       testWidgets('send json data', (WidgetTester tester) async {
-        final Completer controllerCompleter = Completer<InAppWebViewController>();
+        final Completer controllerCompleter =
+            Completer<InAppWebViewController>();
         final Completer<Map<String, dynamic>> fetchPostCompleter =
-        Completer<Map<String, dynamic>>();
+            Completer<Map<String, dynamic>>();
         final Completer<void> shouldInterceptFetchPostRequestCompleter =
-        Completer<void>();
+            Completer<void>();
         await tester.pumpWidget(
           Directionality(
             textDirection: TextDirection.ltr,
@@ -2196,9 +2205,9 @@ void main() {
                     """),
               initialOptions: InAppWebViewGroupOptions(
                   crossPlatform: InAppWebViewOptions(
-                    clearCache: true,
-                    useShouldInterceptFetchRequest: true,
-                  )),
+                clearCache: true,
+                useShouldInterceptFetchRequest: true,
+              )),
               onWebViewCreated: (controller) {
                 controllerCompleter.complete(controller);
 
@@ -2211,7 +2220,8 @@ void main() {
               },
               shouldInterceptFetchRequest: (controller, fetchRequest) async {
                 String body = fetchRequest.body;
-                assert(body.contains('"firstname":"Foo"') && body.contains('"lastname":"Bar"'));
+                assert(body.contains('"firstname":"Foo"') &&
+                    body.contains('"lastname":"Bar"'));
 
                 fetchRequest.body = '{"firstname": "Foo2", "lastname": "Bar2"}';
                 shouldInterceptFetchPostRequestCompleter.complete();
@@ -2231,11 +2241,12 @@ void main() {
       });
 
       testWidgets('send URLSearchParams data', (WidgetTester tester) async {
-        final Completer controllerCompleter = Completer<InAppWebViewController>();
+        final Completer controllerCompleter =
+            Completer<InAppWebViewController>();
         final Completer<Map<String, dynamic>> fetchPostCompleter =
-        Completer<Map<String, dynamic>>();
+            Completer<Map<String, dynamic>>();
         final Completer<void> shouldInterceptFetchPostRequestCompleter =
-        Completer<void>();
+            Completer<void>();
         await tester.pumpWidget(
           Directionality(
             textDirection: TextDirection.ltr,
@@ -2278,9 +2289,9 @@ void main() {
                     """),
               initialOptions: InAppWebViewGroupOptions(
                   crossPlatform: InAppWebViewOptions(
-                    clearCache: true,
-                    useShouldInterceptFetchRequest: true,
-                  )),
+                clearCache: true,
+                useShouldInterceptFetchRequest: true,
+              )),
               onWebViewCreated: (controller) {
                 controllerCompleter.complete(controller);
 
@@ -2312,11 +2323,12 @@ void main() {
       });
 
       testWidgets('send FormData', (WidgetTester tester) async {
-        final Completer controllerCompleter = Completer<InAppWebViewController>();
+        final Completer controllerCompleter =
+            Completer<InAppWebViewController>();
         final Completer<Map<String, dynamic>> fetchPostCompleter =
-        Completer<Map<String, dynamic>>();
+            Completer<Map<String, dynamic>>();
         final Completer<void> shouldInterceptFetchPostRequestCompleter =
-        Completer<void>();
+            Completer<void>();
         await tester.pumpWidget(
           Directionality(
             textDirection: TextDirection.ltr,
@@ -2357,9 +2369,9 @@ void main() {
                     """),
               initialOptions: InAppWebViewGroupOptions(
                   crossPlatform: InAppWebViewOptions(
-                    clearCache: true,
-                    useShouldInterceptFetchRequest: true,
-                  )),
+                clearCache: true,
+                useShouldInterceptFetchRequest: true,
+              )),
               onWebViewCreated: (controller) {
                 controllerCompleter.complete(controller);
 
@@ -2377,7 +2389,9 @@ void main() {
                 var bodyString = String.fromCharCodes(body);
                 assert(bodyString.indexOf("WebKitFormBoundary") >= 0);
 
-                fetchRequest.body = utf8.encode(bodyString.replaceFirst("Foo", "Foo2").replaceFirst("Bar", "Bar2"));
+                fetchRequest.body = utf8.encode(bodyString
+                    .replaceFirst("Foo", "Foo2")
+                    .replaceFirst("Bar", "Bar2"));
                 shouldInterceptFetchPostRequestCompleter.complete();
                 return fetchRequest;
               },
@@ -2404,24 +2418,24 @@ void main() {
           child: InAppWebView(
             key: GlobalKey(),
             initialUrlRequest:
-            URLRequest(url: Uri.parse('https://flutter.dev/')),
+                URLRequest(url: Uri.parse('https://flutter.dev/')),
             onWebViewCreated: (controller) {
               controllerCompleter.complete(controller);
             },
             initialOptions: InAppWebViewGroupOptions(
                 crossPlatform:
-                InAppWebViewOptions(clearCache: true, contentBlockers: [
-                  ContentBlocker(
-                      trigger:
+                    InAppWebViewOptions(clearCache: true, contentBlockers: [
+              ContentBlocker(
+                  trigger:
                       ContentBlockerTrigger(urlFilter: ".*", resourceType: [
-                        ContentBlockerTriggerResourceType.IMAGE,
-                        ContentBlockerTriggerResourceType.STYLE_SHEET
-                      ], ifTopUrl: [
-                        "https://flutter.dev/"
-                      ]),
-                      action: ContentBlockerAction(
-                          type: ContentBlockerActionType.BLOCK))
-                ])),
+                    ContentBlockerTriggerResourceType.IMAGE,
+                    ContentBlockerTriggerResourceType.STYLE_SHEET
+                  ], ifTopUrl: [
+                    "https://flutter.dev/"
+                  ]),
+                  action: ContentBlockerAction(
+                      type: ContentBlockerActionType.BLOCK))
+            ])),
             onLoadStop: (controller, url) {
               pageLoaded.complete();
             },
@@ -3261,7 +3275,7 @@ setTimeout(function() {
           child: InAppWebView(
             key: GlobalKey(),
             initialUrlRequest:
-            URLRequest(url: Uri.parse('https://github.com/flutter')),
+                URLRequest(url: Uri.parse('https://github.com/flutter')),
             onWebViewCreated: (controller) {
               controllerCompleter.complete(controller);
             },
@@ -3278,7 +3292,7 @@ setTimeout(function() {
       );
 
       final InAppWebViewController controller =
-      await controllerCompleter.future;
+          await controllerCompleter.future;
       await pageLoaded.future;
       listenForScaleChange = true;
 
@@ -4167,10 +4181,14 @@ setTimeout(function() {
       await pageLoaded.future;
 
       await controller.injectJavascriptFileFromUrl(
-          urlFile: Uri.parse('https://www.notawebsite..com/jquery-3.3.1.min.js'),
-          scriptHtmlTagAttributes: ScriptHtmlTagAttributes(id: 'jquery-error', onError: () {
-            jQueryLoadError.complete();
-          },));
+          urlFile:
+              Uri.parse('https://www.notawebsite..com/jquery-3.3.1.min.js'),
+          scriptHtmlTagAttributes: ScriptHtmlTagAttributes(
+            id: 'jquery-error',
+            onError: () {
+              jQueryLoadError.complete();
+            },
+          ));
       await jQueryLoadError.future;
       expect(
           await controller.evaluateJavascript(
@@ -4182,9 +4200,12 @@ setTimeout(function() {
 
       await controller.injectJavascriptFileFromUrl(
           urlFile: Uri.parse('https://code.jquery.com/jquery-3.3.1.min.js'),
-          scriptHtmlTagAttributes: ScriptHtmlTagAttributes(id: 'jquery', onLoad: () {
-            jQueryLoaded.complete();
-          },));
+          scriptHtmlTagAttributes: ScriptHtmlTagAttributes(
+            id: 'jquery',
+            onLoad: () {
+              jQueryLoaded.complete();
+            },
+          ));
       await jQueryLoaded.future;
       expect(
           await controller.evaluateJavascript(
@@ -4903,21 +4924,19 @@ setTimeout(function() {
       expect(await InAppWebViewController.getDefaultUserAgent(), isNotNull);
     });
 
-    testWidgets('launches with pull-to-refresh feature', (WidgetTester tester) async {
+    testWidgets('launches with pull-to-refresh feature',
+        (WidgetTester tester) async {
       final Completer controllerCompleter = Completer<InAppWebViewController>();
       final pullToRefreshController = PullToRefreshController(
         options: PullToRefreshOptions(
-          color: Colors.blue,
-          size: AndroidPullToRefreshSize.DEFAULT,
-          backgroundColor: Colors.grey,
-          enabled: true,
-          slingshotDistance: 150,
-          distanceToTriggerSync: 150,
-          attributedTitle: IOSNSAttributedString(string: "test")
-        ),
-        onRefresh: () {
-
-        },
+            color: Colors.blue,
+            size: AndroidPullToRefreshSize.DEFAULT,
+            backgroundColor: Colors.grey,
+            enabled: true,
+            slingshotDistance: 150,
+            distanceToTriggerSync: 150,
+            attributedTitle: IOSNSAttributedString(string: "test")),
+        onRefresh: () {},
       );
 
       await tester.pumpWidget(
@@ -4925,12 +4944,11 @@ setTimeout(function() {
           textDirection: TextDirection.ltr,
           child: InAppWebView(
             key: GlobalKey(),
-            initialUrlRequest: URLRequest(url: Uri.parse('https://github.com/flutter')),
+            initialUrlRequest:
+                URLRequest(url: Uri.parse('https://github.com/flutter')),
             initialOptions: InAppWebViewGroupOptions(
-              android: AndroidInAppWebViewOptions(
-                useHybridComposition: true
-              )
-            ),
+                android:
+                    AndroidInAppWebViewOptions(useHybridComposition: true)),
             pullToRefreshController: pullToRefreshController,
             onWebViewCreated: (controller) {
               controllerCompleter.complete(controller);
@@ -4939,22 +4957,22 @@ setTimeout(function() {
         ),
       );
       final InAppWebViewController controller =
-      await controllerCompleter.future;
+          await controllerCompleter.future;
       final String? currentUrl = (await controller.getUrl())?.toString();
       expect(currentUrl, 'https://github.com/flutter');
     });
 
     group('WebMessage', () {
       testWidgets('WebMessageChannel', (WidgetTester tester) async {
-        final Completer controllerCompleter = Completer<InAppWebViewController>();
+        final Completer controllerCompleter =
+            Completer<InAppWebViewController>();
         final Completer webMessageCompleter = Completer<String>();
         await tester.pumpWidget(
           Directionality(
             textDirection: TextDirection.ltr,
             child: InAppWebView(
               key: GlobalKey(),
-              initialData: InAppWebViewInitialData(
-                  data: """
+              initialData: InAppWebViewInitialData(data: """
 <!DOCTYPE html>
 <html lang="en">
 <head>
@@ -4989,15 +5007,20 @@ setTimeout(function() {
                 webMessageCompleter.complete(consoleMessage.message);
               },
               onLoadStop: (controller, url) async {
-                var webMessageChannel = await controller.createWebMessageChannel();
+                var webMessageChannel =
+                    await controller.createWebMessageChannel();
                 var port1 = webMessageChannel!.port1;
                 var port2 = webMessageChannel.port2;
 
                 await port1.setWebMessageCallback((message) async {
-                  await port1.postMessage(WebMessage(data: message! + " and back"));
+                  await port1
+                      .postMessage(WebMessage(data: message! + " and back"));
                 });
-                await controller.postWebMessage(message: WebMessage(data: "capturePort", ports: [port2]), targetOrigin: Uri.parse("*"));
-                await controller.evaluateJavascript(source: "document.getElementById('button').click();");
+                await controller.postWebMessage(
+                    message: WebMessage(data: "capturePort", ports: [port2]),
+                    targetOrigin: Uri.parse("*"));
+                await controller.evaluateJavascript(
+                    source: "document.getElementById('button').click();");
               },
             ),
           ),
@@ -5009,7 +5032,8 @@ setTimeout(function() {
       });
 
       testWidgets('WebMessageListener', (WidgetTester tester) async {
-        final Completer controllerCompleter = Completer<InAppWebViewController>();
+        final Completer controllerCompleter =
+            Completer<InAppWebViewController>();
         final Completer<void> pageLoaded = Completer<void>();
         final Completer webMessageCompleter = Completer<String>();
         await tester.pumpWidget(
@@ -5021,8 +5045,10 @@ setTimeout(function() {
                 await controller.addWebMessageListener(WebMessageListener(
                   jsObjectName: "myTestObj",
                   allowedOriginRules: Set.from(["https://*.example.com"]),
-                  onPostMessage: (message, sourceOrigin, isMainFrame, replyProxy) {
-                    assert(sourceOrigin.toString() == "https://www.example.com");
+                  onPostMessage:
+                      (message, sourceOrigin, isMainFrame, replyProxy) {
+                    assert(
+                        sourceOrigin.toString() == "https://www.example.com");
                     assert(isMainFrame);
 
                     replyProxy.postMessage(message! + " and back");
@@ -5042,7 +5068,8 @@ setTimeout(function() {
           ),
         );
         final controller = await controllerCompleter.future;
-        await controller.loadUrl(urlRequest: URLRequest(url: Uri.parse("https://www.example.com/")));
+        await controller.loadUrl(
+            urlRequest: URLRequest(url: Uri.parse("https://www.example.com/")));
         await pageLoaded.future;
 
         await controller.evaluateJavascript(source: """
@@ -5273,7 +5300,9 @@ setTimeout(function() {
       }, skip: !Platform.isAndroid);
 
       test('setWebContentsDebuggingEnabled', () async {
-        expect(AndroidInAppWebViewController.setWebContentsDebuggingEnabled(true), completes);
+        expect(
+            AndroidInAppWebViewController.setWebContentsDebuggingEnabled(true),
+            completes);
       }, skip: !Platform.isAndroid);
     }, skip: !Platform.isAndroid);
 
@@ -5377,8 +5406,7 @@ setTimeout(function() {
             textDirection: TextDirection.ltr,
             child: InAppWebView(
               key: GlobalKey(),
-              initialData: InAppWebViewInitialData(
-                  data: """
+              initialData: InAppWebViewInitialData(data: """
 <!DOCTYPE html>
 <html lang="en">
 <head>
@@ -5393,8 +5421,7 @@ setTimeout(function() {
     </script>
 </body>
 </html>
-                  """
-              ),
+                  """),
               initialOptions: InAppWebViewGroupOptions(
                 ios: IOSInAppWebViewOptions(
                   applePayAPIEnabled: true,
@@ -5421,6 +5448,47 @@ setTimeout(function() {
     }, skip: !Platform.isIOS);
   });
 
+  group('Service Worker', () {
+    testWidgets('AndroidInAppWebViewController', (WidgetTester tester) async {
+      final Completer completer = Completer();
+
+      var swAvailable = await AndroidWebViewFeature.isFeatureSupported(
+          AndroidWebViewFeature.SERVICE_WORKER_BASIC_USAGE);
+      var swInterceptAvailable = await AndroidWebViewFeature.isFeatureSupported(
+          AndroidWebViewFeature.SERVICE_WORKER_SHOULD_INTERCEPT_REQUEST);
+
+      if (swAvailable && swInterceptAvailable) {
+        AndroidServiceWorkerController serviceWorkerController =
+            AndroidServiceWorkerController.instance();
+
+        await serviceWorkerController
+            .setServiceWorkerClient(AndroidServiceWorkerClient(
+          shouldInterceptRequest: (request) async {
+            if (!completer.isCompleted) {
+              completer.complete();
+            }
+            return null;
+          },
+        ));
+      } else {
+        completer.complete();
+      }
+
+      await tester.pumpWidget(
+        Directionality(
+          textDirection: TextDirection.ltr,
+          child: InAppWebView(
+            key: GlobalKey(),
+            initialUrlRequest:
+                URLRequest(url: Uri.parse('https://mdn.github.io/sw-test/')),
+          ),
+        ),
+      );
+
+      expect(completer.future, completes);
+    }, skip: !Platform.isAndroid);
+  });
+
   group('Cookie Manager', () {
     testWidgets('set, get, delete', (WidgetTester tester) async {
       CookieManager cookieManager = CookieManager.instance();
@@ -5474,7 +5542,8 @@ setTimeout(function() {
       final Completer<void> pageLoaded = Completer<void>();
 
       var headlessWebView = new HeadlessInAppWebView(
-        initialUrlRequest: URLRequest(url: Uri.parse("https://github.com/flutter")),
+        initialUrlRequest:
+            URLRequest(url: Uri.parse("https://github.com/flutter")),
         onWebViewCreated: (controller) {
           controllerCompleter.complete(controller);
         },
@@ -5503,20 +5572,20 @@ setTimeout(function() {
       final Completer<void> pageLoaded = Completer<void>();
 
       var headlessWebView = new HeadlessInAppWebView(
-        initialUrlRequest: URLRequest(url: Uri.parse("https://github.com/flutter")),
-        onWebViewCreated: (controller) {
-          controllerCompleter.complete(controller);
-        },
-        onLoadStop: (controller, url) async {
-          pageLoaded.complete();
-        }
-      );
+          initialUrlRequest:
+              URLRequest(url: Uri.parse("https://github.com/flutter")),
+          onWebViewCreated: (controller) {
+            controllerCompleter.complete(controller);
+          },
+          onLoadStop: (controller, url) async {
+            pageLoaded.complete();
+          });
 
       await headlessWebView.run();
       expect(headlessWebView.isRunning(), true);
 
       final InAppWebViewController controller =
-      await controllerCompleter.future;
+          await controllerCompleter.future;
       await pageLoaded.future;
 
       final String? url = (await controller.getUrl())?.toString();
@@ -5537,11 +5606,12 @@ setTimeout(function() {
       final Completer controllerCompleter = Completer<InAppWebViewController>();
 
       var headlessWebView = new HeadlessInAppWebView(
-          initialUrlRequest: URLRequest(url: Uri.parse("https://github.com/flutter")),
-          initialSize: Size(600, 800),
-          onWebViewCreated: (controller) {
-            controllerCompleter.complete(controller);
-          },
+        initialUrlRequest:
+            URLRequest(url: Uri.parse("https://github.com/flutter")),
+        initialSize: Size(600, 800),
+        onWebViewCreated: (controller) {
+          controllerCompleter.complete(controller);
+        },
       );
 
       await headlessWebView.run();
@@ -5566,7 +5636,8 @@ setTimeout(function() {
       final Completer<void> pageLoaded = Completer<void>();
 
       var headlessWebView = new HeadlessInAppWebView(
-        initialUrlRequest: URLRequest(url: Uri.parse("https://github.com/flutter")),
+        initialUrlRequest:
+            URLRequest(url: Uri.parse("https://github.com/flutter")),
         initialOptions: InAppWebViewGroupOptions(
             crossPlatform: InAppWebViewOptions(javaScriptEnabled: false)),
         onWebViewCreated: (controller) {
@@ -5610,8 +5681,7 @@ setTimeout(function() {
       expect(inAppBrowser.isOpened(), true);
       expect(() async {
         await inAppBrowser.openUrlRequest(
-            urlRequest:
-                URLRequest(url: Uri.parse("https://flutter.dev")));
+            urlRequest: URLRequest(url: Uri.parse("https://flutter.dev")));
       }, throwsA(isInstanceOf<InAppBrowserAlreadyOpenedException>()));
 
       await inAppBrowser.firstPageLoaded.future;
@@ -5633,13 +5703,14 @@ setTimeout(function() {
         await inAppBrowser.show();
       }, throwsA(isInstanceOf<InAppBrowserNotOpenedException>()));
 
-      await inAppBrowser.openFile(assetFilePath: "test_assets/in_app_webview_initial_file_test.html");
+      await inAppBrowser.openFile(
+          assetFilePath: "test_assets/in_app_webview_initial_file_test.html");
       await inAppBrowser.browserCreated.future;
       expect(inAppBrowser.isOpened(), true);
       expect(() async {
         await inAppBrowser.openUrlRequest(
             urlRequest:
-            URLRequest(url: Uri.parse("https://github.com/flutter")));
+                URLRequest(url: Uri.parse("https://github.com/flutter")));
       }, throwsA(isInstanceOf<InAppBrowserAlreadyOpenedException>()));
 
       await inAppBrowser.firstPageLoaded.future;
@@ -5661,7 +5732,8 @@ setTimeout(function() {
         await inAppBrowser.show();
       }, throwsA(isInstanceOf<InAppBrowserNotOpenedException>()));
 
-      await inAppBrowser.openData(data: """
+      await inAppBrowser.openData(
+          data: """
 <!doctype html>
 <html lang="en">
     <head>
@@ -5685,7 +5757,7 @@ setTimeout(function() {
       expect(() async {
         await inAppBrowser.openUrlRequest(
             urlRequest:
-            URLRequest(url: Uri.parse("https://github.com/flutter")));
+                URLRequest(url: Uri.parse("https://github.com/flutter")));
       }, throwsA(isInstanceOf<InAppBrowserAlreadyOpenedException>()));
 
       await inAppBrowser.firstPageLoaded.future;
@@ -5728,12 +5800,12 @@ setTimeout(function() {
       var chromeSafariBrowser = new MyChromeSafariBrowser();
       expect(chromeSafariBrowser.isOpened(), false);
 
-      await chromeSafariBrowser.open(url: Uri.parse("https://github.com/flutter"));
+      await chromeSafariBrowser.open(
+          url: Uri.parse("https://github.com/flutter"));
       await chromeSafariBrowser.browserCreated.future;
       expect(chromeSafariBrowser.isOpened(), true);
       expect(() async {
-        await chromeSafariBrowser.open(
-            url: Uri.parse("https://flutter.dev"));
+        await chromeSafariBrowser.open(url: Uri.parse("https://flutter.dev"));
       }, throwsA(isInstanceOf<ChromeSafariBrowserAlreadyOpenedException>()));
 
       await expectLater(chromeSafariBrowser.firstPageLoaded.future, completes);
@@ -5748,21 +5820,18 @@ setTimeout(function() {
         expect(chromeSafariBrowser.isOpened(), false);
 
         await chromeSafariBrowser.open(
-          url: Uri.parse("https://github.com/flutter"),
-          options: ChromeSafariBrowserClassOptions(
-            android: AndroidChromeCustomTabsOptions(
-              isSingleInstance: true
-            )
-          )
-        );
+            url: Uri.parse("https://github.com/flutter"),
+            options: ChromeSafariBrowserClassOptions(
+                android:
+                    AndroidChromeCustomTabsOptions(isSingleInstance: true)));
         await chromeSafariBrowser.browserCreated.future;
         expect(chromeSafariBrowser.isOpened(), true);
         expect(() async {
-          await chromeSafariBrowser.open(
-              url: Uri.parse("https://flutter.dev"));
+          await chromeSafariBrowser.open(url: Uri.parse("https://flutter.dev"));
         }, throwsA(isInstanceOf<ChromeSafariBrowserAlreadyOpenedException>()));
 
-        await expectLater(chromeSafariBrowser.firstPageLoaded.future, completes);
+        await expectLater(
+            chromeSafariBrowser.firstPageLoaded.future, completes);
         await chromeSafariBrowser.close();
         await chromeSafariBrowser.browserClosed.future;
         expect(chromeSafariBrowser.isOpened(), false);
@@ -5776,18 +5845,15 @@ setTimeout(function() {
             url: Uri.parse("https://github.com/flutter"),
             options: ChromeSafariBrowserClassOptions(
                 android: AndroidChromeCustomTabsOptions(
-                    isTrustedWebActivity: true
-                )
-            )
-        );
+                    isTrustedWebActivity: true)));
         await chromeSafariBrowser.browserCreated.future;
         expect(chromeSafariBrowser.isOpened(), true);
         expect(() async {
-          await chromeSafariBrowser.open(
-              url: Uri.parse("https://flutter.dev"));
+          await chromeSafariBrowser.open(url: Uri.parse("https://flutter.dev"));
         }, throwsA(isInstanceOf<ChromeSafariBrowserAlreadyOpenedException>()));
 
-        await expectLater(chromeSafariBrowser.firstPageLoaded.future, completes);
+        await expectLater(
+            chromeSafariBrowser.firstPageLoaded.future, completes);
         await chromeSafariBrowser.close();
         await chromeSafariBrowser.browserClosed.future;
         expect(chromeSafariBrowser.isOpened(), false);
@@ -5801,19 +5867,15 @@ setTimeout(function() {
             url: Uri.parse("https://github.com/flutter"),
             options: ChromeSafariBrowserClassOptions(
                 android: AndroidChromeCustomTabsOptions(
-                  isTrustedWebActivity: true,
-                  isSingleInstance: true
-                )
-            )
-        );
+                    isTrustedWebActivity: true, isSingleInstance: true)));
         await chromeSafariBrowser.browserCreated.future;
         expect(chromeSafariBrowser.isOpened(), true);
         expect(() async {
-          await chromeSafariBrowser.open(
-              url: Uri.parse("https://flutter.dev"));
+          await chromeSafariBrowser.open(url: Uri.parse("https://flutter.dev"));
         }, throwsA(isInstanceOf<ChromeSafariBrowserAlreadyOpenedException>()));
 
-        await expectLater(chromeSafariBrowser.firstPageLoaded.future, completes);
+        await expectLater(
+            chromeSafariBrowser.firstPageLoaded.future, completes);
         await chromeSafariBrowser.close();
         await chromeSafariBrowser.browserClosed.future;
         expect(chromeSafariBrowser.isOpened(), false);
@@ -5837,8 +5899,8 @@ setTimeout(function() {
           textDirection: TextDirection.ltr,
           child: InAppWebView(
             key: GlobalKey(),
-            initialUrlRequest:
-            URLRequest(url: Uri.parse('http://localhost:8080/test_assets/index.html')),
+            initialUrlRequest: URLRequest(
+                url: Uri.parse('http://localhost:8080/test_assets/index.html')),
             onWebViewCreated: (controller) {
               controllerCompleter.complete(controller);
             },
@@ -5846,7 +5908,7 @@ setTimeout(function() {
         ),
       );
       final InAppWebViewController controller =
-      await controllerCompleter.future;
+          await controllerCompleter.future;
       final String? currentUrl = (await controller.getUrl())?.toString();
       expect(currentUrl, 'http://localhost:8080/test_assets/index.html');
     });

example/lib/chrome_safari_browser_example.screen.dart

@@ -71,8 +71,7 @@ class _ChromeSafariBrowserExampleScreenState
                         keepAliveEnabled: true,
                         dismissButtonStyle: DismissButtonStyle.CLOSE,
                         presentationStyle:
-                        ModalPresentationStyle.OVER_FULL_SCREEN
-                    ));
+                            ModalPresentationStyle.OVER_FULL_SCREEN));
               },
               child: Text("Open Chrome Safari Browser")),
         ));

example/lib/in_app_browser_example.screen.dart

@@ -83,7 +83,6 @@ class InAppBrowserExampleScreen extends StatefulWidget {
 }
 
 class _InAppBrowserExampleScreenState extends State<InAppBrowserExampleScreen> {
-
   late PullToRefreshController pullToRefreshController;
 
   @override
@@ -99,7 +98,8 @@ class _InAppBrowserExampleScreenState extends State<InAppBrowserExampleScreen> {
           widget.browser.webViewController.reload();
         } else if (Platform.isIOS) {
           widget.browser.webViewController.loadUrl(
-              urlRequest: URLRequest(url: await widget.browser.webViewController.getUrl()));
+              urlRequest: URLRequest(
+                  url: await widget.browser.webViewController.getUrl()));
         }
       },
     );
@@ -121,14 +121,14 @@ class _InAppBrowserExampleScreenState extends State<InAppBrowserExampleScreen> {
               ElevatedButton(
                   onPressed: () async {
                     await widget.browser.openUrlRequest(
-                        urlRequest:
-                            URLRequest(url: Uri.parse("https://flutter.dev")),
-                        settings: InAppBrowserClassSettings(
-                          webViewSettings: InAppWebViewSettings(
-                            useShouldOverrideUrlLoading: true,
-                            useOnLoadResource: true,
-                          ),
+                      urlRequest:
+                          URLRequest(url: Uri.parse("https://flutter.dev")),
+                      settings: InAppBrowserClassSettings(
+                        webViewSettings: InAppWebViewSettings(
+                          useShouldOverrideUrlLoading: true,
+                          useOnLoadResource: true,
                         ),
+                      ),
                     );
                   },
                   child: Text("Open In-App Browser")),

example/lib/in_app_webiew_example.screen.dart

@@ -1,12 +1,7 @@
 import 'dart:collection';
-// import 'dart:convert';
-import 'dart:io';
-// import 'dart:typed_data';
-
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_inappwebview/flutter_inappwebview.dart';
-// import 'package:path_provider/path_provider.dart';
 import 'package:url_launcher/url_launcher.dart';
 
 import 'main.dart';
@@ -43,8 +38,7 @@ class _InAppWebViewExampleScreenState extends State<InAppWebViewExampleScreen> {
     contextMenu = ContextMenu(
         menuItems: [
           ContextMenuItem(
-              androidId: 1,
-              iosId: "1",
+              id: 1,
               title: "Special",
               action: () async {
                 print("Menu item Special clicked!");
@@ -62,11 +56,8 @@ class _InAppWebViewExampleScreenState extends State<InAppWebViewExampleScreen> {
           print("onHideContextMenu");
         },
         onContextMenuActionItemClicked: (contextMenuItemClicked) async {
-          var id = (Platform.isAndroid)
-              ? contextMenuItemClicked.androidId
-              : contextMenuItemClicked.iosId;
           print("onContextMenuActionItemClicked: " +
-              id.toString() +
+              contextMenuItemClicked.id.toString() +
               " " +
               contextMenuItemClicked.title);
         });
@@ -76,9 +67,9 @@ class _InAppWebViewExampleScreenState extends State<InAppWebViewExampleScreen> {
         color: Colors.blue,
       ),
       onRefresh: () async {
-        if (Platform.isAndroid) {
+        if (defaultTargetPlatform == TargetPlatform.android) {
           webViewController?.reload();
-        } else if (Platform.isIOS) {
+        } else if (defaultTargetPlatform == TargetPlatform.iOS) {
           webViewController?.loadUrl(
               urlRequest: URLRequest(url: await webViewController?.getUrl()));
         }

example/lib/main.dart

@@ -31,12 +31,12 @@ Future main() async {
       ServiceWorkerController serviceWorkerController =
           ServiceWorkerController.instance();
 
-      serviceWorkerController.serviceWorkerClient = ServiceWorkerClient(
+      await serviceWorkerController.setServiceWorkerClient(ServiceWorkerClient(
         shouldInterceptRequest: (request) async {
           print(request);
           return null;
         },
-      );
+      ));
     }
   }
 

ios/Classes/ContextMenuSettings.swift

@@ -7,7 +7,7 @@
 
 import Foundation
 
-class ContextMenuOptions: IWebViewSettings<NSObject> {
+class ContextMenuSettings: ISettings<NSObject> {
     
     var hideDefaultSystemContextMenuItems = false;
 

ios/Classes/CredentialDatabase.swift

@@ -31,7 +31,11 @@ class CredentialDatabase: NSObject, FlutterPlugin {
         switch call.method {
             case "getAllAuthCredentials":
                 var allCredentials: [[String: Any?]] = []
-                for (protectionSpace, credentials) in CredentialDatabase.credentialStore!.allCredentials {
+                guard let credentialStore = CredentialDatabase.credentialStore else {
+                    result(allCredentials)
+                    return
+                }
+                for (protectionSpace, credentials) in credentialStore.allCredentials {
                     var crendentials: [[String: Any?]] = []
                     for c in credentials {
                         let credential: [String: Any?] = c.value.toMap()
@@ -43,10 +47,17 @@ class CredentialDatabase: NSObject, FlutterPlugin {
                             "credentials": crendentials
                         ]
                         allCredentials.append(dict)
-                    }                }
+                    }
+                }
                 result(allCredentials)
                 break
             case "getHttpAuthCredentials":
+                var crendentials: [[String: Any?]] = []
+                guard let credentialStore = CredentialDatabase.credentialStore else {
+                    result(crendentials)
+                    return
+                }
+            
                 let host = arguments!["host"] as! String
                 let urlProtocol = arguments!["protocol"] as? String
                 let urlPort = arguments!["port"] as? Int ?? 0
@@ -54,9 +65,8 @@ class CredentialDatabase: NSObject, FlutterPlugin {
                 if let r = realm, r.isEmpty {
                     realm = nil
                 }
-                var crendentials: [[String: Any?]] = []
 
-                for (protectionSpace, credentials) in CredentialDatabase.credentialStore!.allCredentials {
+                for (protectionSpace, credentials) in credentialStore.allCredentials {
                     if protectionSpace.host == host && protectionSpace.realm == realm &&
                     protectionSpace.protocol == urlProtocol && protectionSpace.port == urlPort {
                         for c in credentials {
@@ -68,6 +78,11 @@ class CredentialDatabase: NSObject, FlutterPlugin {
                 result(crendentials)
                 break
             case "setHttpAuthCredential":
+                guard let credentialStore = CredentialDatabase.credentialStore else {
+                    result(false)
+                    return
+                }
+            
                 let host = arguments!["host"] as! String
                 let urlProtocol = arguments!["protocol"] as? String
                 let urlPort = arguments!["port"] as? Int ?? 0
@@ -78,11 +93,17 @@ class CredentialDatabase: NSObject, FlutterPlugin {
                 let username = arguments!["username"] as! String
                 let password = arguments!["password"] as! String
                 let credential = URLCredential(user: username, password: password, persistence: .permanent)
-                CredentialDatabase.credentialStore!.set(credential,
-                                                        for: URLProtectionSpace(host: host, port: urlPort, protocol: urlProtocol, realm: realm, authenticationMethod: NSURLAuthenticationMethodHTTPBasic))
+                credentialStore.set(credential,
+                                    for: URLProtectionSpace(host: host, port: urlPort, protocol: urlProtocol,
+                                                            realm: realm, authenticationMethod: NSURLAuthenticationMethodHTTPBasic))
                 result(true)
                 break
             case "removeHttpAuthCredential":
+                guard let credentialStore = CredentialDatabase.credentialStore else {
+                    result(false)
+                    return
+                }
+            
                 let host = arguments!["host"] as! String
                 let urlProtocol = arguments!["protocol"] as? String
                 let urlPort = arguments!["port"] as? Int ?? 0
@@ -96,7 +117,7 @@ class CredentialDatabase: NSObject, FlutterPlugin {
                 var credential: URLCredential? = nil;
                 var protectionSpaceCredential: URLProtectionSpace? = nil
                 
-                for (protectionSpace, credentials) in CredentialDatabase.credentialStore!.allCredentials {
+                for (protectionSpace, credentials) in credentialStore.allCredentials {
                     if protectionSpace.host == host && protectionSpace.realm == realm &&
                     protectionSpace.protocol == urlProtocol && protectionSpace.port == urlPort {
                         for c in credentials {
@@ -113,12 +134,17 @@ class CredentialDatabase: NSObject, FlutterPlugin {
                 }
                 
                 if let c = credential, let protectionSpace = protectionSpaceCredential {
-                    CredentialDatabase.credentialStore!.remove(c, for: protectionSpace)
+                    credentialStore.remove(c, for: protectionSpace)
                 }
                 
                 result(true)
                 break
             case "removeHttpAuthCredentials":
+                guard let credentialStore = CredentialDatabase.credentialStore else {
+                    result(false)
+                    return
+                }
+            
                 let host = arguments!["host"] as! String
                 let urlProtocol = arguments!["protocol"] as? String
                 let urlPort = arguments!["port"] as? Int ?? 0
@@ -130,7 +156,7 @@ class CredentialDatabase: NSObject, FlutterPlugin {
                 var credentialsToRemove: [URLCredential] = [];
                 var protectionSpaceCredential: URLProtectionSpace? = nil
                 
-                for (protectionSpace, credentials) in CredentialDatabase.credentialStore!.allCredentials {
+                for (protectionSpace, credentials) in credentialStore.allCredentials {
                     if protectionSpace.host == host && protectionSpace.realm == realm &&
                     protectionSpace.protocol == urlProtocol && protectionSpace.port == urlPort {
                         protectionSpaceCredential = protectionSpace
@@ -145,16 +171,21 @@ class CredentialDatabase: NSObject, FlutterPlugin {
                 
                 if let protectionSpace = protectionSpaceCredential {
                     for credential in credentialsToRemove {
-                        CredentialDatabase.credentialStore!.remove(credential, for: protectionSpace)
+                        credentialStore.remove(credential, for: protectionSpace)
                     }
                 }
                 
                 result(true)
                 break
             case "clearAllAuthCredentials":
-                for (protectionSpace, credentials) in CredentialDatabase.credentialStore!.allCredentials {
+                guard let credentialStore = CredentialDatabase.credentialStore else {
+                    result(false)
+                    return
+                }
+            
+                for (protectionSpace, credentials) in credentialStore.allCredentials {
                     for credential in credentials {
-                        CredentialDatabase.credentialStore!.remove(credential.value, for: protectionSpace)
+                        credentialStore.remove(credential.value, for: protectionSpace)
                     }
                 }
                 result(true)
@@ -164,4 +195,11 @@ class CredentialDatabase: NSObject, FlutterPlugin {
                 break
         }
     }
+    
+    public func dispose() {
+        CredentialDatabase.channel?.setMethodCallHandler(nil)
+        CredentialDatabase.channel = nil
+        CredentialDatabase.registrar = nil
+        CredentialDatabase.credentialStore = nil
+    }
 }

ios/Classes/HeadlessInAppWebView/HeadlessInAppWebViewManager.swift

@@ -57,4 +57,15 @@ public class HeadlessInAppWebViewManager: NSObject, FlutterPlugin {
         headlessInAppWebView.onWebViewCreated()
         flutterWebView.makeInitialLoad(params: params as NSDictionary)
     }
+    
+    public func dispose() {
+        HeadlessInAppWebViewManager.channel?.setMethodCallHandler(nil)
+        HeadlessInAppWebViewManager.channel = nil
+        HeadlessInAppWebViewManager.registrar = nil
+        let headlessWebViews = HeadlessInAppWebViewManager.webViews.values
+        headlessWebViews.forEach { (headlessWebView: HeadlessInAppWebView) in
+            headlessWebView.dispose()
+        }
+        HeadlessInAppWebViewManager.webViews.removeAll()
+    }
 }

ios/Classes/ISettings.swift

@@ -8,13 +8,13 @@
 import Foundation
 
 @objcMembers
-public class IWebViewSettings<T>: NSObject {
+public class ISettings<T>: NSObject {
     
     override init(){
         super.init()
     }
     
-    func parse(settings: [String: Any?]) -> IWebViewSettings {
+    func parse(settings: [String: Any?]) -> ISettings {
         for (key, value) in settings {
             if !(value is NSNull), value != nil, self.responds(to: Selector(key)) {
                 self.setValue(value, forKey: key)

ios/Classes/InAppBrowser/InAppBrowserManager.swift

@@ -140,4 +140,10 @@ public class InAppBrowserManager: NSObject, FlutterPlugin {
         }
         result(true)
     }
+    
+    public func dispose() {
+        InAppBrowserManager.channel?.setMethodCallHandler(nil)
+        InAppBrowserManager.channel = nil
+        InAppBrowserManager.registrar = nil
+    }
 }

ios/Classes/InAppBrowser/InAppBrowserSettings.swift

@@ -8,7 +8,7 @@
 import Foundation
 
 @objcMembers
-public class InAppBrowserSettings: IWebViewSettings<InAppBrowserWebViewController> {
+public class InAppBrowserSettings: ISettings<InAppBrowserWebViewController> {
     
     var hidden = false
     var hideToolbarTop = true

ios/Classes/InAppBrowser/InAppBrowserWebViewController.swift

@@ -182,6 +182,7 @@ public class InAppBrowserWebViewController: UIViewController, InAppBrowserDelega
     
     deinit {
         print("InAppBrowserWebViewController - dealloc")
+        dispose()
     }
     
     public override func viewDidDisappear(_ animated: Bool) {
@@ -550,7 +551,10 @@ public class InAppBrowserWebViewController: UIViewController, InAppBrowserDelega
     }
     
     public func dispose() {
-        webView.dispose()
+        onExit()
+        channel?.setMethodCallHandler(nil)
+        channel = nil
+        webView?.dispose()
         webView = nil
         view = nil
         if previousStatusBarStyle != -1 {
@@ -563,18 +567,15 @@ public class InAppBrowserWebViewController: UIViewController, InAppBrowserDelega
         backButton.target = nil
         reloadButton.target = nil
         shareButton.target = nil
-        onExit()
-        channel?.setMethodCallHandler(nil)
-        channel = nil
         methodCallDelegate?.webView = nil
         methodCallDelegate = nil
     }
     
     public func onBrowserCreated() {
-        channel!.invokeMethod("onBrowserCreated", arguments: [])
+        channel?.invokeMethod("onBrowserCreated", arguments: [])
     }
     
     public func onExit() {
-        channel!.invokeMethod("onExit", arguments: [])
+        channel?.invokeMethod("onExit", arguments: [])
     }
 }

ios/Classes/InAppWebView/FlutterWebViewController.swift

@@ -164,7 +164,8 @@ public class FlutterWebViewController: NSObject, FlutterPlatformView {
     
     func dispose() {
         channel?.setMethodCallHandler(nil)
-        methodCallDelegate?.webView = nil
+        channel = nil
+        methodCallDelegate?.dispose()
         methodCallDelegate = nil
         webView?.dispose()
         webView = nil

ios/Classes/InAppWebView/InAppWebView.swift

@@ -9,7 +9,10 @@ import Flutter
 import Foundation
 import WebKit
 
-public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavigationDelegate, WKScriptMessageHandler, UIGestureRecognizerDelegate, PullToRefreshDelegate {
+public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate,
+                            WKNavigationDelegate, WKScriptMessageHandler, UIGestureRecognizerDelegate,
+                            WKDownloadDelegate,
+                            PullToRefreshDelegate {
 
     var windowId: Int64?
     var windowCreated = false
@@ -203,13 +206,15 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         if let menu = self.contextMenu {
             if let menuItems = menu["menuItems"] as? [[String : Any]] {
                 for menuItem in menuItems {
-                    let id = menuItem["iosId"] as! String
+                    let id = menuItem["id"]!
                     let title = menuItem["title"] as! String
-                    let targetMethodName = "onContextMenuActionItemClicked-" + String(self.hash) + "-" + id
+                    let targetMethodName = "onContextMenuActionItemClicked-" + String(self.hash) + "-" +
+                                            (id is Int64 ? String(id as! Int64) : id as! String)
                     if !self.responds(to: Selector(targetMethodName)) {
                         let customAction: () -> Void = {
                             let arguments: [String: Any?] = [
-                                "iosId": id,
+                                "id": id,
+                                "iosId": id is Int64 ? String(id as! Int64) : id as! String,
                                 "androidId": nil,
                                 "title": title
                             ]
@@ -244,10 +249,10 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
             }
             
             if let menu = contextMenu {
-                let contextMenuOptions = ContextMenuOptions()
-                if let contextMenuOptionsMap = menu["options"] as? [String: Any?] {
-                    let _ = contextMenuOptions.parse(settings: contextMenuOptionsMap)
-                    if !action.description.starts(with: "onContextMenuActionItemClicked-") && contextMenuOptions.hideDefaultSystemContextMenuItems {
+                let contextMenuSettings = ContextMenuSettings()
+                if let contextMenuSettingsMap = menu["settings"] as? [String: Any?] {
+                    let _ = contextMenuSettings.parse(settings: contextMenuSettingsMap)
+                    if !action.description.starts(with: "onContextMenuActionItemClicked-") && contextMenuSettings.hideDefaultSystemContextMenuItems {
                         return false
                     }
                 }
@@ -256,6 +261,7 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
             if contextMenuIsShowing, !action.description.starts(with: "onContextMenuActionItemClicked-") {
                 let id = action.description.compactMap({ $0.asciiValue?.description }).joined()
                 let arguments: [String: Any?] = [
+                    "id": id,
                     "iosId": id,
                     "androidId": nil,
                     "title": action.description
@@ -1514,11 +1520,14 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
                     var action = response["action"] as? Int
                     action = action != nil ? action : 0;
                     switch action {
-                    case 1:
-                        decisionHandler(.grant)
-                        break
-                    default:
-                        decisionHandler(.deny)
+                        case 1:
+                            decisionHandler(.grant)
+                            break
+                        case 2:
+                            decisionHandler(.prompt)
+                            break
+                        default:
+                            decisionHandler(.deny)
                     }
                     return;
                 }
@@ -1552,11 +1561,14 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
                     var action = response["action"] as? Int
                     action = action != nil ? action : 0;
                     switch action {
-                    case 1:
-                        decisionHandler(.grant)
-                        break
-                    default:
-                        decisionHandler(.deny)
+                        case 1:
+                            decisionHandler(.grant)
+                            break
+                        case 2:
+                            decisionHandler(.prompt)
+                            break
+                        default:
+                            decisionHandler(.deny)
                     }
                     return;
                 }
@@ -1575,6 +1587,39 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         })
     }
     
+    @available(iOS 14.5, *)
+    public func download(_ download: WKDownload, decideDestinationUsing response: URLResponse, suggestedFilename: String, completionHandler: @escaping (URL?) -> Void) {
+        if let url = response.url, let useOnDownloadStart = settings?.useOnDownloadStart, useOnDownloadStart {
+            let downloadStartRequest = DownloadStartRequest(url: url.absoluteString,
+                                                            userAgent: nil,
+                                                            contentDisposition: nil,
+                                                            mimeType: response.mimeType,
+                                                            contentLength: response.expectedContentLength,
+                                                            suggestedFilename: suggestedFilename,
+                                                            textEncodingName: response.textEncodingName)
+            onDownloadStartRequest(request: downloadStartRequest)
+        }
+        download.delegate = nil
+        // cancel the download
+        completionHandler(nil)
+    }
+    
+    @available(iOS 14.5, *)
+    public func webView(_ webView: WKWebView, navigationResponse: WKNavigationResponse, didBecome download: WKDownload) {
+        let response = navigationResponse.response
+        if let url = response.url, let useOnDownloadStart = settings?.useOnDownloadStart, useOnDownloadStart {
+            let downloadStartRequest = DownloadStartRequest(url: url.absoluteString,
+                                                            userAgent: nil,
+                                                            contentDisposition: nil,
+                                                            mimeType: response.mimeType,
+                                                            contentLength: response.expectedContentLength,
+                                                            suggestedFilename: response.suggestedFilename,
+                                                            textEncodingName: response.textEncodingName)
+            onDownloadStartRequest(request: downloadStartRequest)
+        }
+        download.delegate = nil
+    }
+    
     public func webView(_ webView: WKWebView,
                  decidePolicyFor navigationAction: WKNavigationAction,
                  decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
@@ -1602,7 +1647,8 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
                         if let r = result {
                             response = r as! [String: Any]
                             let action = response["action"] as? Int
-                            let navigationActionPolicy = WKNavigationActionPolicy.init(rawValue: action ?? WKNavigationActionPolicy.cancel.rawValue) ??
+                            let navigationActionPolicy = WKNavigationActionPolicy
+                                .init(rawValue: action ?? WKNavigationActionPolicy.cancel.rawValue) ??
                                 WKNavigationActionPolicy.cancel
                             decisionHandler(navigationActionPolicy)
                             return;
@@ -1644,15 +1690,11 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
                     var response: [String: Any]
                     if let r = result {
                         response = r as! [String: Any]
-                        var action = response["action"] as? Int
-                        action = action != nil ? action : 0;
-                        switch action {
-                            case 1:
-                                decisionHandler(.allow)
-                                break
-                            default:
-                                decisionHandler(.cancel)
-                        }
+                        let action = response["action"] as? Int
+                        let navigationActionPolicy = WKNavigationResponsePolicy
+                            .init(rawValue: action ?? WKNavigationResponsePolicy.cancel.rawValue) ??
+                            WKNavigationResponsePolicy.cancel
+                        decisionHandler(navigationActionPolicy)
                         return;
                     }
                     decisionHandler(.allow)
@@ -1661,21 +1703,26 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
         }
         
         if let useOnDownloadStart = settings?.useOnDownloadStart, useOnDownloadStart {
-            let mimeType = navigationResponse.response.mimeType
-            if let url = navigationResponse.response.url, navigationResponse.isForMainFrame {
-                if url.scheme != "file", mimeType != nil, !mimeType!.starts(with: "text/") {
-                    let downloadStartRequest = DownloadStartRequest(url: url.absoluteString,
-                                                                    userAgent: nil,
-                                                                    contentDisposition: nil,
-                                                                    mimeType: mimeType,
-                                                                    contentLength: navigationResponse.response.expectedContentLength,
-                                                                    suggestedFilename: navigationResponse.response.suggestedFilename,
-                                                                    textEncodingName: navigationResponse.response.textEncodingName)
-                    onDownloadStartRequest(request: downloadStartRequest)
-                    if useOnNavigationResponse == nil || !useOnNavigationResponse! {
-                        decisionHandler(.cancel)
+            if #available(iOS 14.5, *), !navigationResponse.canShowMIMEType {
+                decisionHandler(.download)
+                return
+            } else {
+                let mimeType = navigationResponse.response.mimeType
+                if let url = navigationResponse.response.url, navigationResponse.isForMainFrame {
+                    if url.scheme != "file", mimeType != nil, !mimeType!.starts(with: "text/") {
+                        let downloadStartRequest = DownloadStartRequest(url: url.absoluteString,
+                                                                        userAgent: nil,
+                                                                        contentDisposition: nil,
+                                                                        mimeType: mimeType,
+                                                                        contentLength: navigationResponse.response.expectedContentLength,
+                                                                        suggestedFilename: navigationResponse.response.suggestedFilename,
+                                                                        textEncodingName: navigationResponse.response.textEncodingName)
+                        onDownloadStartRequest(request: downloadStartRequest)
+                        if useOnNavigationResponse == nil || !useOnNavigationResponse! {
+                            decisionHandler(.cancel)
+                        }
+                        return
                     }
-                    return
                 }
             }
         }
@@ -1791,8 +1838,8 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
                                 completionHandler(.useCredential, credential)
                                 break
                             case 2:
-                                if InAppWebView.credentialsProposed.count == 0 {
-                                    for (protectionSpace, credentials) in CredentialDatabase.credentialStore!.allCredentials {
+                                if InAppWebView.credentialsProposed.count == 0, let credentialStore = CredentialDatabase.credentialStore {
+                                    for (protectionSpace, credentials) in credentialStore.allCredentials {
                                         if protectionSpace.host == host && protectionSpace.realm == realm &&
                                         protectionSpace.protocol == prot && protectionSpace.port == port {
                                             for credential in credentials {
@@ -3023,6 +3070,12 @@ if(window.\(JAVASCRIPT_BRIDGE_NAME)[\(_callHandlerID)] != null) {
     }
     
     public func dispose() {
+        channel = nil
+        removeObserver(self, forKeyPath: #keyPath(WKWebView.estimatedProgress))
+        removeObserver(self, forKeyPath: #keyPath(WKWebView.url))
+        removeObserver(self, forKeyPath: #keyPath(WKWebView.title))
+        scrollView.removeObserver(self, forKeyPath: #keyPath(UIScrollView.contentOffset))
+        scrollView.removeObserver(self, forKeyPath: #keyPath(UIScrollView.zoomScale))
         resumeTimers()
         stopLoading()
         disposeWebMessageChannels()
@@ -3043,15 +3096,10 @@ if(window.\(JAVASCRIPT_BRIDGE_NAME)[\(_callHandlerID)] != null) {
             InAppWebView.windowWebViews.removeValue(forKey: wId)
         }
         configuration.userContentController.dispose(windowId: windowId)
-        removeObserver(self, forKeyPath: #keyPath(WKWebView.estimatedProgress))
-        removeObserver(self, forKeyPath: #keyPath(WKWebView.url))
-        removeObserver(self, forKeyPath: #keyPath(WKWebView.title))
         NotificationCenter.default.removeObserver(self)
         for imp in customIMPs {
             imp_removeBlock(imp)
         }
-        scrollView.removeObserver(self, forKeyPath: #keyPath(UIScrollView.contentOffset))
-        scrollView.removeObserver(self, forKeyPath: #keyPath(UIScrollView.zoomScale))
         longPressRecognizer.removeTarget(self, action: #selector(longPressGestureDetected))
         longPressRecognizer.delegate = nil
         scrollView.removeGestureRecognizer(longPressRecognizer)
@@ -3068,7 +3116,6 @@ if(window.\(JAVASCRIPT_BRIDGE_NAME)[\(_callHandlerID)] != null) {
         navigationDelegate = nil
         scrollView.delegate = nil
         isPausedTimersCompletionHandler = nil
-        channel = nil
         SharedLastTouchPointTimestamp.removeValue(forKey: self)
         callAsyncJavaScriptBelowIOS14Results.removeAll()
         super.removeFromSuperview()

ios/Classes/InAppWebView/InAppWebViewSettings.swift

@@ -9,7 +9,7 @@ import Foundation
 import WebKit
 
 @objcMembers
-public class InAppWebViewSettings: IWebViewSettings<InAppWebView> {
+public class InAppWebViewSettings: ISettings<InAppWebView> {
     
     var useShouldOverrideUrlLoading = false
     var useOnLoadResource = false

ios/Classes/InAppWebViewMethodHandler.swift

@@ -598,8 +598,12 @@ public class InAppWebViewMethodHandler: FlutterMethodCallDelegate {
         }
     }
     
-    deinit {
-        print("InAppWebViewMethodHandler - dealloc")
+    public func dispose() {
         webView = nil
     }
+    
+    deinit {
+        print("InAppWebViewMethodHandler - dealloc")
+        dispose()
+    }
 }

ios/Classes/InAppWebViewStatic.swift

@@ -72,4 +72,12 @@ class InAppWebViewStatic: NSObject, FlutterPlugin {
             completionHandler(defaultUserAgent)
         }
     }
+    
+    public func dispose() {
+        InAppWebViewStatic.channel?.setMethodCallHandler(nil)
+        InAppWebViewStatic.channel = nil
+        InAppWebViewStatic.registrar = nil
+        InAppWebViewStatic.webViewForUserAgent = nil
+        InAppWebViewStatic.defaultUserAgent = nil
+    }
 }

ios/Classes/MyCookieManager.swift

@@ -100,6 +100,11 @@ class MyCookieManager: NSObject, FlutterPlugin {
                           isHttpOnly: Bool?,
                           sameSite: String?,
                           result: @escaping FlutterResult) {
+        guard let httpCookieStore = MyCookieManager.httpCookieStore else {
+            result(false)
+            return
+        }
+        
         var properties: [HTTPCookiePropertyKey: Any] = [:]
         properties[.originURL] = url
         properties[.name] = name
@@ -138,7 +143,7 @@ class MyCookieManager: NSObject, FlutterPlugin {
         
         let cookie = HTTPCookie(properties: properties)!
         
-        MyCookieManager.httpCookieStore!.setCookie(cookie, completionHandler: {() in
+        httpCookieStore.setCookie(cookie, completionHandler: {() in
             result(true)
         })
     }
@@ -146,8 +151,13 @@ class MyCookieManager: NSObject, FlutterPlugin {
     public static func getCookies(url: String, result: @escaping FlutterResult) {
         var cookieList: [[String: Any?]] = []
         
+        guard let httpCookieStore = MyCookieManager.httpCookieStore else {
+            result(cookieList)
+            return
+        }
+        
         if let urlHost = URL(string: url)?.host {
-            MyCookieManager.httpCookieStore!.getAllCookies { (cookies) in
+            httpCookieStore.getAllCookies { (cookies) in
                 for cookie in cookies {
                     if urlHost.hasSuffix(cookie.domain) || ".\(urlHost)".hasSuffix(cookie.domain) {
                         var sameSite: String? = nil
@@ -189,7 +199,12 @@ class MyCookieManager: NSObject, FlutterPlugin {
     public static func getAllCookies(result: @escaping FlutterResult) {
         var cookieList: [[String: Any?]] = []
         
-        MyCookieManager.httpCookieStore!.getAllCookies { (cookies) in
+        guard let httpCookieStore = MyCookieManager.httpCookieStore else {
+            result(cookieList)
+            return
+        }
+        
+        httpCookieStore.getAllCookies { (cookies) in
             for cookie in cookies {
                 var sameSite: String? = nil
                 if #available(iOS 13.0, *) {
@@ -221,7 +236,12 @@ class MyCookieManager: NSObject, FlutterPlugin {
     }
     
     public static func deleteCookie(url: String, name: String, domain: String, path: String, result: @escaping FlutterResult) {
-        MyCookieManager.httpCookieStore!.getAllCookies { (cookies) in
+        guard let httpCookieStore = MyCookieManager.httpCookieStore else {
+            result(false)
+            return
+        }
+    
+        httpCookieStore.getAllCookies { (cookies) in
             for cookie in cookies {
                 var originURL = ""
                 if cookie.properties![.originURL] is String {
@@ -234,7 +254,7 @@ class MyCookieManager: NSObject, FlutterPlugin {
                     continue
                 }
                 if (cookie.domain == domain || cookie.domain == ".\(domain)" || ".\(cookie.domain)" == domain) && cookie.name == name && cookie.path == path {
-                    MyCookieManager.httpCookieStore!.delete(cookie, completionHandler: {
+                    httpCookieStore.delete(cookie, completionHandler: {
                         result(true)
                     })
                     return
@@ -245,7 +265,12 @@ class MyCookieManager: NSObject, FlutterPlugin {
     }
     
     public static func deleteCookies(url: String, domain: String, path: String, result: @escaping FlutterResult) {
-        MyCookieManager.httpCookieStore!.getAllCookies { (cookies) in
+        guard let httpCookieStore = MyCookieManager.httpCookieStore else {
+            result(false)
+            return
+        }
+        
+        httpCookieStore.getAllCookies { (cookies) in
             for cookie in cookies {
                 var originURL = ""
                 if cookie.properties![.originURL] is String {
@@ -258,7 +283,7 @@ class MyCookieManager: NSObject, FlutterPlugin {
                     continue
                 }
                 if (cookie.domain == domain || cookie.domain == ".\(domain)" || ".\(cookie.domain)" == domain) && cookie.path == path {
-                    MyCookieManager.httpCookieStore!.delete(cookie, completionHandler: nil)
+                    httpCookieStore.delete(cookie, completionHandler: nil)
                 }
             }
             result(true)
@@ -272,4 +297,11 @@ class MyCookieManager: NSObject, FlutterPlugin {
             result(true)
         })
     }
+    
+    public func dispose() {
+        MyCookieManager.channel?.setMethodCallHandler(nil)
+        MyCookieManager.channel = nil
+        MyCookieManager.registrar = nil
+        MyCookieManager.httpCookieStore = nil
+    }
 }

ios/Classes/MyWebStorageManager.swift

@@ -53,7 +53,13 @@ class MyWebStorageManager: NSObject, FlutterPlugin {
     
     public static func fetchDataRecords(dataTypes: Set<String>, result: @escaping FlutterResult) {
         var recordList: [[String: Any?]] = []
-        MyWebStorageManager.websiteDataStore!.fetchDataRecords(ofTypes: dataTypes) { (data) in
+        
+        guard let websiteDataStore = MyWebStorageManager.websiteDataStore else {
+            result(recordList)
+            return
+        }
+        
+        websiteDataStore.fetchDataRecords(ofTypes: dataTypes) { (data) in
             for record in data {
                 recordList.append([
                     "displayName": record.displayName,
@@ -68,7 +74,13 @@ class MyWebStorageManager: NSObject, FlutterPlugin {
     
     public static func removeDataFor(dataTypes: Set<String>, recordList: [[String: Any?]], result: @escaping FlutterResult) {
         var records: [WKWebsiteDataRecord] = []
-        MyWebStorageManager.websiteDataStore!.fetchDataRecords(ofTypes: dataTypes) { (data) in
+        
+        guard let websiteDataStore = MyWebStorageManager.websiteDataStore else {
+            result(false)
+            return
+        }
+        
+        websiteDataStore.fetchDataRecords(ofTypes: dataTypes) { (data) in
             for record in data {
                 for r in recordList {
                     let displayName = r["displayName"] as! String
@@ -78,16 +90,28 @@ class MyWebStorageManager: NSObject, FlutterPlugin {
                     }
                 }
             }
-            MyWebStorageManager.websiteDataStore!.removeData(ofTypes: dataTypes, for: records) {
+            websiteDataStore.removeData(ofTypes: dataTypes, for: records) {
                 result(true)
             }
         }
     }
     
     public static func removeDataModifiedSince(dataTypes: Set<String>, timestamp: Int64, result: @escaping FlutterResult) {
+        guard let websiteDataStore = MyWebStorageManager.websiteDataStore else {
+            result(false)
+            return
+        }
+        
         let date = NSDate(timeIntervalSince1970: TimeInterval(timestamp))
-        MyWebStorageManager.websiteDataStore!.removeData(ofTypes: dataTypes, modifiedSince: date as Date) {
+        websiteDataStore.removeData(ofTypes: dataTypes, modifiedSince: date as Date) {
             result(true)
         }
     }
+    
+    public func dispose() {
+        MyWebStorageManager.channel?.setMethodCallHandler(nil)
+        MyWebStorageManager.channel = nil
+        MyWebStorageManager.registrar = nil
+        MyWebStorageManager.websiteDataStore = nil
+    }
 }

ios/Classes/PlatformUtil.swift

@@ -60,4 +60,10 @@ class PlatformUtil: NSObject, FlutterPlugin {
         formatter.timeZone = timezone
         return formatter.string(from: PlatformUtil.getDateFromMilliseconds(date: date))
     }
+    
+    public func dispose() {
+        PlatformUtil.channel?.setMethodCallHandler(nil)
+        PlatformUtil.channel = nil
+        PlatformUtil.registrar = nil
+    }
 }

ios/Classes/PullToRefresh/PullToRefreshControl.swift

@@ -109,5 +109,6 @@ public class PullToRefreshControl : UIRefreshControl, FlutterPlugin {
     
     deinit {
         print("PullToRefreshControl - dealloc")
+        dispose()
     }
 }

ios/Classes/PullToRefresh/PullToRefreshSettings.swift

@@ -7,7 +7,7 @@
 
 import Foundation
 
-public class PullToRefreshSettings : IWebViewSettings<PullToRefreshControl> {
+public class PullToRefreshSettings : ISettings<PullToRefreshControl> {
     
     var enabled = true
     var color: String?

ios/Classes/SafariViewController/ChromeSafariBrowserManager.swift

@@ -91,4 +91,10 @@ public class ChromeSafariBrowserManager: NSObject, FlutterPlugin {
         
         result(FlutterError.init(code: "ChromeSafariBrowserManager", message: "SafariViewController is not available!", details: nil))
     }
+    
+    public func dispose() {
+        ChromeSafariBrowserManager.channel?.setMethodCallHandler(nil)
+        ChromeSafariBrowserManager.channel = nil
+        ChromeSafariBrowserManager.registrar = nil
+    }
 }

ios/Classes/SafariViewController/SafariBrowserSettings.swift

@@ -9,7 +9,7 @@ import Foundation
 
 @available(iOS 9.0, *)
 @objcMembers
-public class SafariBrowserSettings: IWebViewSettings<SafariViewController> {
+public class SafariBrowserSettings: ISettings<SafariViewController> {
     
     var entersReaderIfAvailable = false
     var barCollapsingEnabled = false

ios/Classes/SafariViewController/SafariViewController.swift

@@ -22,6 +22,7 @@ public class SafariViewController: SFSafariViewController, FlutterPlugin, SFSafa
     
     deinit {
         print("SafariViewController - dealloc")
+        dispose()
     }
     
     public func prepareMethodChannel() {
@@ -123,20 +124,21 @@ public class SafariViewController: SFSafariViewController, FlutterPlugin, SFSafa
 //    }
     
     public func onChromeSafariBrowserOpened() {
-        channel!.invokeMethod("onChromeSafariBrowserOpened", arguments: [])
+        channel?.invokeMethod("onChromeSafariBrowserOpened", arguments: [])
     }
     
     public func onChromeSafariBrowserCompletedInitialLoad() {
-        channel!.invokeMethod("onChromeSafariBrowserCompletedInitialLoad", arguments: [])
+        channel?.invokeMethod("onChromeSafariBrowserCompletedInitialLoad", arguments: [])
     }
     
     public func onChromeSafariBrowserClosed() {
-        channel!.invokeMethod("onChromeSafariBrowserClosed", arguments: [])
+        channel?.invokeMethod("onChromeSafariBrowserClosed", arguments: [])
     }
     
     public func dispose() {
+        channel?.setMethodCallHandler(nil)
+        channel = nil
         delegate = nil
-        channel!.setMethodCallHandler(nil)
     }
 }
 
@@ -180,7 +182,12 @@ class CustomUIActivity : UIActivity {
     }
 
     override func perform() {
-        let channel = FlutterMethodChannel(name: "com.pichillilorenzo/flutter_chromesafaribrowser_" + viewId, binaryMessenger: SwiftFlutterPlugin.instance!.registrar!.messenger())
+        guard let registrar = SwiftFlutterPlugin.instance?.registrar else {
+            return
+        }
+        
+        let channel = FlutterMethodChannel(name: "com.pichillilorenzo/flutter_chromesafaribrowser_" + viewId,
+                                           binaryMessenger: registrar.messenger())
         
         let arguments: [String: Any?] = [
             "url": url.absoluteString,

ios/Classes/SwiftFlutterPlugin.swift

@@ -49,16 +49,39 @@ public class SwiftFlutterPlugin: NSObject, FlutterPlugin {
         headlessInAppWebViewManager = HeadlessInAppWebViewManager(registrar: registrar)
         chromeSafariBrowserManager = ChromeSafariBrowserManager(registrar: registrar)
         inAppWebViewStatic = InAppWebViewStatic(registrar: registrar)
+        credentialDatabase = CredentialDatabase(registrar: registrar)
         if #available(iOS 11.0, *) {
             myCookieManager = MyCookieManager(registrar: registrar)
         }
         if #available(iOS 9.0, *) {
             myWebStorageManager = MyWebStorageManager(registrar: registrar)
         }
-        credentialDatabase = CredentialDatabase(registrar: registrar)
     }
     
     public static func register(with registrar: FlutterPluginRegistrar) {
         SwiftFlutterPlugin.instance = SwiftFlutterPlugin(with: registrar)
     }
+    
+    public func detachFromEngine(for registrar: FlutterPluginRegistrar) {
+        platformUtil?.dispose()
+        platformUtil = nil
+        inAppBrowserManager?.dispose()
+        inAppBrowserManager = nil
+        headlessInAppWebViewManager?.dispose()
+        headlessInAppWebViewManager = nil
+        chromeSafariBrowserManager?.dispose()
+        chromeSafariBrowserManager = nil
+        inAppWebViewStatic?.dispose()
+        inAppWebViewStatic = nil
+        credentialDatabase?.dispose()
+        credentialDatabase = nil
+        if #available(iOS 11.0, *) {
+            (myCookieManager as! MyCookieManager?)?.dispose()
+            myCookieManager = nil
+        }
+        if #available(iOS 9.0, *) {
+            (myWebStorageManager as! MyWebStorageManager?)?.dispose()
+            myWebStorageManager = nil
+        }
+    }
 }

ios/Classes/Types/WKNavigationAction.swift

@@ -10,6 +10,10 @@ import WebKit
 
 extension WKNavigationAction {
     public func toMap () -> [String:Any?] {
+        var shouldPerformDownload: Bool? = nil
+        if #available(iOS 14.5, *) {
+            shouldPerformDownload = self.shouldPerformDownload
+        }
         return [
             "request": request.toMap(),
             "isForMainFrame": targetFrame?.isMainFrame ?? false,
@@ -17,7 +21,8 @@ extension WKNavigationAction {
             "isRedirect": nil,
             "navigationType": navigationType.rawValue,
             "sourceFrame": sourceFrame.toMap(),
-            "targetFrame": targetFrame?.toMap()
+            "targetFrame": targetFrame?.toMap(),
+            "shouldPerformDownload": shouldPerformDownload
         ]
     }
 }

ios/Classes/Types/WKUserContentController.swift

@@ -21,7 +21,7 @@ extension WKUserContentController {
     var contentWorlds: Set<WKContentWorld> {
         get {
             let tmpAddress = String(format: "%p", unsafeBitCast(self, to: Int.self))
-            return WKUserContentController._contentWorlds[tmpAddress]!
+            return WKUserContentController._contentWorlds[tmpAddress] ?? []
         }
         set(newValue) {
             let tmpAddress = String(format: "%p", unsafeBitCast(self, to: Int.self))
@@ -33,7 +33,7 @@ extension WKUserContentController {
     var userOnlyScripts: [WKUserScriptInjectionTime:OrderedSet<UserScript>] {
         get {
             let tmpAddress = String(format: "%p", unsafeBitCast(self, to: Int.self))
-            return WKUserContentController._userOnlyScripts[tmpAddress]!
+            return WKUserContentController._userOnlyScripts[tmpAddress] ?? [:]
         }
         set(newValue) {
             let tmpAddress = String(format: "%p", unsafeBitCast(self, to: Int.self))
@@ -45,7 +45,7 @@ extension WKUserContentController {
     var pluginScripts: [WKUserScriptInjectionTime:OrderedSet<PluginScript>] {
         get {
             let tmpAddress = String(format: "%p", unsafeBitCast(self, to: Int.self))
-            return WKUserContentController._pluginScripts[tmpAddress]!
+            return WKUserContentController._pluginScripts[tmpAddress] ?? [:]
         }
         set(newValue) {
             let tmpAddress = String(format: "%p", unsafeBitCast(self, to: Int.self))

ios/Classes/Types/WebMessage.swift

@@ -23,5 +23,6 @@ public class WebMessage : NSObject {
     
     deinit {
         print("WebMessage - dealloc")
+        dispose()
     }
 }

ios/Classes/Types/WebMessageChannel.swift

@@ -126,6 +126,7 @@ public class WebMessageChannel : FlutterMethodCallDelegate {
     
     public func dispose() {
         channel?.setMethodCallHandler(nil)
+        channel = nil
         for port in ports {
             port.dispose()
         }
@@ -140,11 +141,11 @@ public class WebMessageChannel : FlutterMethodCallDelegate {
             }
         })();
         """)
-        channel = nil
         webView = nil
     }
     
     deinit {
         print("WebMessageChannel - dealloc")
+        dispose()
     }
 }

ios/Classes/Types/WebMessageListener.swift

@@ -222,5 +222,6 @@ public class WebMessageListener : FlutterMethodCallDelegate {
     
     deinit {
         print("WebMessageListener - dealloc")
+        dispose()
     }
 }

ios/Classes/Types/WebMessagePort.swift

@@ -118,5 +118,6 @@ public class WebMessagePort : NSObject {
     
     deinit {
         print("WebMessagePort - dealloc")
+        dispose()
     }
 }

ios/Classes/Util.swift

@@ -12,7 +12,7 @@ var SharedLastTouchPointTimestamp: [InAppWebView: Int64] = [:]
 
 public class Util {
     public static func getUrlAsset(assetFilePath: String) throws -> URL {
-        let key = SwiftFlutterPlugin.instance!.registrar!.lookupKey(forAsset: assetFilePath)
+        let key = SwiftFlutterPlugin.instance?.registrar?.lookupKey(forAsset: assetFilePath)
         guard let assetURL = Bundle.main.url(forResource: key, withExtension: nil) else {
             throw NSError(domain: assetFilePath + " asset file cannot be found!", code: 0)
         }
@@ -20,7 +20,7 @@ public class Util {
     }
     
     public static func getAbsPathAsset(assetFilePath: String) throws -> String {
-        let key = SwiftFlutterPlugin.instance!.registrar!.lookupKey(forAsset: assetFilePath)
+        let key = SwiftFlutterPlugin.instance?.registrar?.lookupKey(forAsset: assetFilePath)
         guard let assetAbsPath = Bundle.main.path(forResource: key, ofType: nil) else {
             throw NSError(domain: assetFilePath + " asset file cannot be found!", code: 0)
         }

lib/src/android/service_worker_controller.dart

@@ -14,13 +14,23 @@ class ServiceWorkerController {
   static const MethodChannel _channel = const MethodChannel(
       'com.pichillilorenzo/flutter_inappwebview_serviceworkercontroller');
 
-  ServiceWorkerClient? serviceWorkerClient;
-
   ///Gets the [ServiceWorkerController] shared instance.
   static ServiceWorkerController instance() {
     return (_instance != null) ? _instance! : _init();
   }
 
+  ServiceWorkerClient? _serviceWorkerClient;
+
+  ServiceWorkerClient? get serviceWorkerClient => _serviceWorkerClient;
+
+  ///Sets the service worker client
+  setServiceWorkerClient(ServiceWorkerClient? value) async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent('isNull', () => value == null);
+    await _channel.invokeMethod("setServiceWorkerClient", args);
+    _serviceWorkerClient = value;
+  }
+
   static ServiceWorkerController _init() {
     _channel.setMethodCallHandler(_handleMethod);
     _instance = ServiceWorkerController();
@@ -180,7 +190,25 @@ class AndroidServiceWorkerController {
   static const MethodChannel _channel = const MethodChannel(
       'com.pichillilorenzo/flutter_inappwebview_serviceworkercontroller');
 
-  AndroidServiceWorkerClient? serviceWorkerClient;
+  AndroidServiceWorkerClient? _serviceWorkerClient;
+
+  AndroidServiceWorkerClient? get serviceWorkerClient => _serviceWorkerClient;
+
+  @Deprecated("Use setServiceWorkerClient instead")
+  set serviceWorkerClient(AndroidServiceWorkerClient? value) {
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent('isNull', () => value == null);
+    _channel.invokeMethod("setServiceWorkerClient", args);
+    _serviceWorkerClient = value;
+  }
+
+  ///Sets the service worker client
+  setServiceWorkerClient(AndroidServiceWorkerClient? value) async {
+    Map<String, dynamic> args = <String, dynamic>{};
+    args.putIfAbsent('isNull', () => value == null);
+    await _channel.invokeMethod("setServiceWorkerClient", args);
+    _serviceWorkerClient = value;
+  }
 
   ///Gets the [AndroidServiceWorkerController] shared instance.
   static AndroidServiceWorkerController instance() {

lib/src/chrome_safari_browser/chrome_safari_browser_settings.dart

@@ -241,8 +241,8 @@ class ChromeSafariBrowserSettings implements ChromeSafariBrowserOptions {
       settings.additionalTrustedOrigins = map["additionalTrustedOrigins"];
       switch (map["displayMode"]["type"]) {
         case "IMMERSIVE_MODE":
-          settings.displayMode =
-              TrustedWebActivityImmersiveDisplayMode.fromMap(map["displayMode"]);
+          settings.displayMode = TrustedWebActivityImmersiveDisplayMode.fromMap(
+              map["displayMode"]);
           break;
         case "DEFAULT_MODE":
         default:
@@ -255,15 +255,15 @@ class ChromeSafariBrowserSettings implements ChromeSafariBrowserOptions {
       settings.entersReaderIfAvailable = map["entersReaderIfAvailable"];
       settings.barCollapsingEnabled = map["barCollapsingEnabled"];
       settings.dismissButtonStyle =
-        DismissButtonStyle.fromValue(map["dismissButtonStyle"])!;
+          DismissButtonStyle.fromValue(map["dismissButtonStyle"])!;
       settings.preferredBarTintColor =
           UtilColor.fromHex(map["preferredBarTintColor"]);
       settings.preferredControlTintColor =
           UtilColor.fromHex(map["preferredControlTintColor"]);
       settings.presentationStyle =
-        ModalPresentationStyle.fromValue(map["presentationStyle"])!;
+          ModalPresentationStyle.fromValue(map["presentationStyle"])!;
       settings.transitionStyle =
-        ModalTransitionStyle.fromValue(map["transitionStyle"])!;
+          ModalTransitionStyle.fromValue(map["transitionStyle"])!;
     }
     return settings;
   }

lib/src/context_menu.dart

@@ -1,3 +1,5 @@
+import 'package:flutter/foundation.dart';
+
 import 'in_app_webview/webview.dart';
 import 'types.dart';
 
@@ -20,9 +22,13 @@ class ContextMenu {
   final void Function(ContextMenuItem contextMenuItemClicked)?
       onContextMenuActionItemClicked;
 
-  ///Context menu options.
+  ///Use [settings] instead
+  @Deprecated("Use settings instead")
   final ContextMenuOptions? options;
 
+  ///Context menu settings.
+  final ContextMenuSettings? settings;
+
   ///List of the custom [ContextMenuItem].
   final List<ContextMenuItem> menuItems;
 
@@ -31,12 +37,14 @@ class ContextMenu {
       this.onCreateContextMenu,
       this.onHideContextMenu,
       this.options,
+      this.settings,
       this.onContextMenuActionItemClicked});
 
   Map<String, dynamic> toMap() {
     return {
       "menuItems": menuItems.map((menuItem) => menuItem.toMap()).toList(),
-      "options": options?.toMap()
+      // ignore: deprecated_member_use_from_same_package
+      "settings": settings?.toMap() ?? options?.toMap()
     };
   }
 
@@ -52,12 +60,19 @@ class ContextMenu {
 
 ///Class that represent an item of the [ContextMenu].
 class ContextMenuItem {
-  ///Android menu item ID.
+  ///Use [id] instead.
+  @Deprecated("Use id instead")
   int? androidId;
 
-  ///iOS menu item ID.
+  ///Use [id] instead.
+  @Deprecated("Use id instead")
   String? iosId;
 
+  ///Menu item ID. It cannot be `null` and it can be a [String] or an [int].
+  ///
+  ///**NOTE for Android**: it must be an [int] value.
+  dynamic id;
+
   ///Menu item title.
   String title;
 
@@ -65,10 +80,31 @@ class ContextMenuItem {
   Function()? action;
 
   ContextMenuItem(
-      {this.androidId, this.iosId, required this.title, this.action});
+      {this.id,
+      this.androidId,
+      this.iosId,
+      required this.title,
+      this.action}) {
+    if (defaultTargetPlatform == TargetPlatform.android) {
+      // ignore: deprecated_member_use_from_same_package
+      this.id = this.id ?? this.androidId;
+      assert(this.id is int);
+    } else if (defaultTargetPlatform == TargetPlatform.iOS) {
+      // ignore: deprecated_member_use_from_same_package
+      this.id = this.id ?? this.iosId;
+    }
+    assert(this.id != null && (this.id is int || this.id is String));
+  }
 
   Map<String, dynamic> toMap() {
-    return {"androidId": androidId, "iosId": iosId, "title": title};
+    return {
+      "id": id,
+      // ignore: deprecated_member_use_from_same_package
+      "androidId": androidId,
+      // ignore: deprecated_member_use_from_same_package
+      "iosId": iosId,
+      "title": title
+    };
   }
 
   Map<String, dynamic> toJson() {
@@ -81,7 +117,31 @@ class ContextMenuItem {
   }
 }
 
-///Class that represents available options used by [ContextMenu].
+///Class that represents available settings used by [ContextMenu].
+class ContextMenuSettings {
+  ///Whether all the default system context menu items should be hidden or not. The default value is `false`.
+  bool hideDefaultSystemContextMenuItems;
+
+  ContextMenuSettings({this.hideDefaultSystemContextMenuItems = false});
+
+  Map<String, dynamic> toMap() {
+    return {
+      "hideDefaultSystemContextMenuItems": hideDefaultSystemContextMenuItems
+    };
+  }
+
+  Map<String, dynamic> toJson() {
+    return this.toMap();
+  }
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
+}
+
+///Use [ContextMenuSettings] instead.
+@Deprecated("Use ContextMenuSettings instead")
 class ContextMenuOptions {
   ///Whether all the default system context menu items should be hidden or not. The default value is `false`.
   bool hideDefaultSystemContextMenuItems;

lib/src/in_app_browser/in_app_browser_settings.dart

@@ -286,7 +286,7 @@ class InAppBrowserSettings
       settings.closeOnCannotGoBack = map["closeOnCannotGoBack"];
       settings.allowGoBackWithBackButton = map["allowGoBackWithBackButton"];
       settings.shouldCloseOnBackButtonPressed =
-      map["shouldCloseOnBackButtonPressed"];
+          map["shouldCloseOnBackButtonPressed"];
     }
     if (defaultTargetPlatform == TargetPlatform.iOS || defaultTargetPlatform == TargetPlatform.macOS) {
       settings.toolbarTopTranslucent = map["toolbarTopTranslucent"];
@@ -301,9 +301,9 @@ class InAppBrowserSettings
       settings.closeButtonCaption = map["closeButtonCaption"];
       settings.closeButtonColor = UtilColor.fromHex(map["closeButtonColor"]);
       settings.presentationStyle =
-      ModalPresentationStyle.fromValue(map["presentationStyle"])!;
+          ModalPresentationStyle.fromValue(map["presentationStyle"])!;
       settings.transitionStyle =
-      ModalTransitionStyle.fromValue(map["transitionStyle"])!;
+          ModalTransitionStyle.fromValue(map["transitionStyle"])!;
     }
     return settings;
   }

lib/src/in_app_webview/apple/in_app_webview_controller.dart

@@ -107,7 +107,8 @@ abstract class AppleInAppWebViewControllerMixin {
   ///- iOS ([Official API - WKWebView.requestMediaPlaybackState](https://developer.apple.com/documentation/webkit/wkwebview/3752241-requestmediaplaybackstate)).
   Future<MediaPlaybackState?> requestMediaPlaybackState() async {
     Map<String, dynamic> args = <String, dynamic>{};
-    return MediaPlaybackState.fromValue(await _channel.invokeMethod('requestMediaPlaybackState', args));
+    return MediaPlaybackState.fromValue(
+        await _channel.invokeMethod('requestMediaPlaybackState', args));
   }
 }
 

lib/src/in_app_webview/in_app_webview.dart

@@ -472,8 +472,7 @@ class InAppWebView extends StatefulWidget implements WebView {
       NavigationResponse navigationResponse)? onNavigationResponse;
 
   @override
-  final Future<PermissionResponse?> Function(
-      InAppWebViewController controller,
+  final Future<PermissionResponse?> Function(InAppWebViewController controller,
       PermissionRequest permissionRequest)? onPermissionRequest;
 
   @override

lib/src/in_app_webview/in_app_webview_controller.dart

@@ -731,9 +731,9 @@ class InAppWebViewController
           List<String> resources = call.arguments["resources"].cast<String>();
 
           Map<String, dynamic> arguments =
-            call.arguments.cast<String, dynamic>();
+              call.arguments.cast<String, dynamic>();
           PermissionRequest permissionRequest =
-            PermissionRequest.fromMap(arguments)!;
+              PermissionRequest.fromMap(arguments)!;
 
           if (_webview != null) {
             if (_webview!.onPermissionRequest != null)
@@ -747,11 +747,12 @@ class InAppWebViewController
                   ?.toMap();
             }
           } else {
-            return (await _inAppBrowser!
-                        .onPermissionRequest(permissionRequest))?.toMap() ??
-                    (await _inAppBrowser!
+            return (await _inAppBrowser!.onPermissionRequest(permissionRequest))
+                    ?.toMap() ??
+                (await _inAppBrowser!
                         // ignore: deprecated_member_use_from_same_package
-                        .androidOnPermissionRequest(origin, resources))?.toMap();
+                        .androidOnPermissionRequest(origin, resources))
+                    ?.toMap();
           }
         }
         break;
@@ -944,16 +945,18 @@ class InAppWebViewController
         if (contextMenu != null) {
           int? androidId = call.arguments["androidId"];
           String? iosId = call.arguments["iosId"];
+          dynamic id = call.arguments["id"];
           String title = call.arguments["title"];
 
           ContextMenuItem menuItemClicked = ContextMenuItem(
-              androidId: androidId, iosId: iosId, title: title, action: null);
+              id: id,
+              androidId: androidId,
+              iosId: iosId,
+              title: title,
+              action: null);
 
           for (var menuItem in contextMenu.menuItems) {
-            if ((defaultTargetPlatform == TargetPlatform.android &&
-                    menuItem.androidId == androidId) ||
-                (defaultTargetPlatform == TargetPlatform.iOS &&
-                    menuItem.iosId == iosId)) {
+            if (menuItem.id == id) {
               menuItemClicked = menuItem;
               if (menuItem.action != null) {
                 menuItem.action!();
@@ -1864,7 +1867,8 @@ class InAppWebViewController
   ///Use [setSettings] instead.
   @Deprecated('Use setSettings instead')
   Future<void> setOptions({required InAppWebViewGroupOptions options}) async {
-    InAppWebViewSettings settings = InAppWebViewSettings.fromMap(options.toMap());
+    InAppWebViewSettings settings =
+        InAppWebViewSettings.fromMap(options.toMap());
     await setSettings(settings: settings);
   }
 
@@ -2325,7 +2329,8 @@ class InAppWebViewController
 
     try {
       Map<String, dynamic> args = <String, dynamic>{};
-      themeColor = UtilColor.fromStringRepresentation(await _channel.invokeMethod('getMetaThemeColor', args));
+      themeColor = UtilColor.fromStringRepresentation(
+          await _channel.invokeMethod('getMetaThemeColor', args));
     } catch (e) {
       // not implemented
     }

lib/src/in_app_webview/in_app_webview_settings.dart

@@ -1414,7 +1414,7 @@ class InAppWebViewSettings
       settings.hardwareAcceleration = map["hardwareAcceleration"];
       settings.supportMultipleWindows = map["supportMultipleWindows"];
       settings.regexToCancelSubFramesLoading =
-      map["regexToCancelSubFramesLoading"];
+          map["regexToCancelSubFramesLoading"];
       settings.useHybridComposition = map["useHybridComposition"];
       settings.useShouldInterceptRequest = map["useShouldInterceptRequest"];
       settings.useOnRenderProcessGone = map["useOnRenderProcessGone"];
@@ -1424,7 +1424,7 @@ class InAppWebViewSettings
       settings.verticalScrollbarPosition =
           VerticalScrollbarPosition.fromValue(map["verticalScrollbarPosition"]);
       settings.scrollBarDefaultDelayBeforeFade =
-      map["scrollBarDefaultDelayBeforeFade"];
+          map["scrollBarDefaultDelayBeforeFade"];
       settings.scrollbarFadingEnabled = map["scrollbarFadingEnabled"];
       settings.scrollBarFadeDuration = map["scrollBarFadeDuration"];
       settings.rendererPriorityPolicy = RendererPriorityPolicy.fromMap(
@@ -1443,28 +1443,28 @@ class InAppWebViewSettings
       settings.disallowOverScroll = map["disallowOverScroll"];
       settings.enableViewportScale = map["enableViewportScale"];
       settings.suppressesIncrementalRendering =
-      map["suppressesIncrementalRendering"];
+          map["suppressesIncrementalRendering"];
       settings.allowsAirPlayForMediaPlayback =
-      map["allowsAirPlayForMediaPlayback"];
+          map["allowsAirPlayForMediaPlayback"];
       settings.allowsBackForwardNavigationGestures =
-      map["allowsBackForwardNavigationGestures"];
+          map["allowsBackForwardNavigationGestures"];
       settings.allowsLinkPreview = map["allowsLinkPreview"];
       settings.ignoresViewportScaleLimits = map["ignoresViewportScaleLimits"];
       settings.allowsInlineMediaPlayback = map["allowsInlineMediaPlayback"];
       settings.allowsPictureInPictureMediaPlayback =
-      map["allowsPictureInPictureMediaPlayback"];
+          map["allowsPictureInPictureMediaPlayback"];
       settings.isFraudulentWebsiteWarningEnabled =
-      map["isFraudulentWebsiteWarningEnabled"];
+          map["isFraudulentWebsiteWarningEnabled"];
       settings.selectionGranularity =
-      SelectionGranularity.fromValue(map["selectionGranularity"])!;
+          SelectionGranularity.fromValue(map["selectionGranularity"])!;
       settings.dataDetectorTypes = dataDetectorTypes;
       settings.sharedCookiesEnabled = map["sharedCookiesEnabled"];
       settings.automaticallyAdjustsScrollIndicatorInsets =
-      map["automaticallyAdjustsScrollIndicatorInsets"];
+          map["automaticallyAdjustsScrollIndicatorInsets"];
       settings.accessibilityIgnoresInvertColors =
-      map["accessibilityIgnoresInvertColors"];
+          map["accessibilityIgnoresInvertColors"];
       settings.decelerationRate =
-      ScrollViewDecelerationRate.fromValue(map["decelerationRate"])!;
+          ScrollViewDecelerationRate.fromValue(map["decelerationRate"])!;
       settings.alwaysBounceVertical = map["alwaysBounceVertical"];
       settings.alwaysBounceHorizontal = map["alwaysBounceHorizontal"];
       settings.scrollsToTop = map["scrollsToTop"];
@@ -1472,24 +1472,26 @@ class InAppWebViewSettings
       settings.maximumZoomScale = map["maximumZoomScale"];
       settings.minimumZoomScale = map["minimumZoomScale"];
       settings.contentInsetAdjustmentBehavior =
-      ScrollViewContentInsetAdjustmentBehavior.fromValue(
-          map["contentInsetAdjustmentBehavior"])!;
+          ScrollViewContentInsetAdjustmentBehavior.fromValue(
+              map["contentInsetAdjustmentBehavior"])!;
       settings.isDirectionalLockEnabled = map["isDirectionalLockEnabled"];
       settings.mediaType = map["mediaType"];
       settings.pageZoom = map["pageZoom"];
       settings.limitsNavigationsToAppBoundDomains =
-      map["limitsNavigationsToAppBoundDomains"];
+          map["limitsNavigationsToAppBoundDomains"];
       settings.useOnNavigationResponse = map["useOnNavigationResponse"];
       settings.applePayAPIEnabled = map["applePayAPIEnabled"];
       settings.allowingReadAccessTo = map["allowingReadAccessTo"] != null
           ? Uri.parse(map["allowingReadAccessTo"])
           : null;
       settings.disableLongPressContextMenuOnLinks =
-      map["disableLongPressContextMenuOnLinks"];
+          map["disableLongPressContextMenuOnLinks"];
       settings.disableInputAccessoryView = map["disableInputAccessoryView"];
-      settings.underPageBackgroundColor = UtilColor.fromHex(map["underPageBackgroundColor"]);
+      settings.underPageBackgroundColor =
+          UtilColor.fromHex(map["underPageBackgroundColor"]);
       settings.isTextInteractionEnabled = map["isTextInteractionEnabled"];
-      settings.isSiteSpecificQuirksModeEnabled = map["isSiteSpecificQuirksModeEnabled"];
+      settings.isSiteSpecificQuirksModeEnabled =
+          map["isSiteSpecificQuirksModeEnabled"];
       settings.upgradeKnownHostsToHTTPS = map["upgradeKnownHostsToHTTPS"];
     }
     return settings;

lib/src/in_app_webview/webview.dart

@@ -525,8 +525,7 @@ abstract class WebView {
   ///
   ///**Supported Platforms/Implementations**:
   ///- Android native WebView ([Official API - WebChromeClient.onPermissionRequest](https://developer.android.com/reference/android/webkit/WebChromeClient#onPermissionRequest(android.webkit.PermissionRequest)))
-  final Future<PermissionResponse?> Function(
-      InAppWebViewController controller,
+  final Future<PermissionResponse?> Function(InAppWebViewController controller,
       PermissionRequest permissionRequest)? onPermissionRequest;
 
   ///Use [onGeolocationPermissionsShowPrompt] instead.

lib/src/types.dart

@@ -4716,6 +4716,11 @@ class PermissionResponseAction {
   ///Grants origin the permission to access the given resources.
   static const GRANT = const PermissionResponseAction._internal(1);
 
+  ///Prompt the user for permission for the requested resource.
+  ///
+  ///**NOTE**: available only on iOS 15.0+. It will fallback to [DENY].
+  static const PROMPT = const PermissionResponseAction._internal(2);
+
   bool operator ==(value) => value == _value;
 
   @override
@@ -4768,7 +4773,8 @@ class PermissionResourceType {
     PermissionResourceType.RESOURCE_VIDEO_CAPTURE,
   ].toSet();
 
-  static final Set<PermissionResourceType> _appleValues = <PermissionResourceType>[
+  static final Set<PermissionResourceType> _appleValues =
+      <PermissionResourceType>[
     PermissionResourceType.CAMERA,
     PermissionResourceType.MICROPHONE,
     PermissionResourceType.CAMERA_AND_MICROPHONE,
@@ -4814,52 +4820,51 @@ class PermissionResourceType {
   ///Resource belongs to audio capture device, like microphone.
   ///
   ///**NOTE**: available only on Android.
-  static const RESOURCE_AUDIO_CAPTURE = const PermissionResourceType._internal('android.webkit.resource.AUDIO_CAPTURE');
+  static const RESOURCE_AUDIO_CAPTURE = const PermissionResourceType._internal(
+      'android.webkit.resource.AUDIO_CAPTURE');
 
-  ///Resource will allow sysex messages to be sent to or received from MIDI devices. 
-  ///These messages are privileged operations, e.g. modifying sound libraries and sampling data, or even updating the MIDI device's firmware. 
+  ///Resource will allow sysex messages to be sent to or received from MIDI devices.
+  ///These messages are privileged operations, e.g. modifying sound libraries and sampling data, or even updating the MIDI device's firmware.
   ///Permission may be requested for this resource in API levels 21 and above, if the Android device has been updated to WebView 45 or above.
   ///
   ///**NOTE**: available only on Android.
-  static const RESOURCE_MIDI_SYSEX =
-  const PermissionResourceType._internal('android.webkit.resource.MIDI_SYSEX');
+  static const RESOURCE_MIDI_SYSEX = const PermissionResourceType._internal(
+      'android.webkit.resource.MIDI_SYSEX');
 
   ///Resource belongs to protected media identifier. After the user grants this resource, the origin can use EME APIs to generate the license requests.
   ///
   ///**NOTE**: available only on Android.
   static const RESOURCE_PROTECTED_MEDIA_ID =
-  const PermissionResourceType._internal('android.webkit.resource.PROTECTED_MEDIA_ID');
-
+      const PermissionResourceType._internal(
+          'android.webkit.resource.PROTECTED_MEDIA_ID');
 
   ///Resource belongs to video capture device, like camera.
   ///
   ///**NOTE**: available only on Android.
-  static const RESOURCE_VIDEO_CAPTURE =
-  const PermissionResourceType._internal('android.webkit.resource.VIDEO_CAPTURE');
+  static const RESOURCE_VIDEO_CAPTURE = const PermissionResourceType._internal(
+      'android.webkit.resource.VIDEO_CAPTURE');
 
   ///A media device that can capture video.
   ///
   ///**NOTE**: available only on iOS.
-  static const CAMERA =
-  const PermissionResourceType._internal(0);
+  static const CAMERA = const PermissionResourceType._internal(0);
 
   ///A media device that can capture audio.
   ///
   ///**NOTE**: available only on iOS.
-  static const MICROPHONE =
-  const PermissionResourceType._internal(1);
+  static const MICROPHONE = const PermissionResourceType._internal(1);
 
   ///A media device or devices that can capture audio and video.
   ///
   ///**NOTE**: available only on iOS.
   static const CAMERA_AND_MICROPHONE =
-  const PermissionResourceType._internal(2);
+      const PermissionResourceType._internal(2);
 
   ///Resource belongs to the device’s orientation and motion.
   ///
   ///**NOTE**: available only on iOS.
   static const DEVICE_ORIENTATION_AND_MOTION =
-  const PermissionResourceType._internal('deviceOrientationAndMotion');
+      const PermissionResourceType._internal('deviceOrientationAndMotion');
 
   bool operator ==(value) => value == _value;
 
@@ -4873,15 +4878,16 @@ class PermissionRequest {
   Uri origin;
 
   ///List of resources the web content wants to access.
+  ///
+  ///**NOTE for iOS**: this list will have only 1 element and will be used by the [PermissionResponse.action]
+  ///as the resource to consider when applying the corresponding action.
   List<PermissionResourceType> resources;
 
   ///The frame that initiates the request in the web view.
   FrameInfo? frame;
 
   PermissionRequest(
-      {required this.origin,
-        this.resources = const [],
-      this.frame});
+      {required this.origin, this.resources = const [], this.frame});
 
   static PermissionRequest? fromMap(Map<String, dynamic>? map) {
     if (map == null) {
@@ -4890,8 +4896,7 @@ class PermissionRequest {
 
     List<PermissionResourceType> resources = [];
     if (map["resources"] != null) {
-      (map["resources"].cast<dynamic>() as List<dynamic>)
-          .forEach((element) {
+      (map["resources"].cast<dynamic>() as List<dynamic>).forEach((element) {
         var resource = PermissionResourceType.fromValue(element);
         if (resource != null) {
           resources.add(resource);
@@ -4907,7 +4912,7 @@ class PermissionRequest {
 
   Map<String, dynamic> toMap() {
     return {
-      "origin": origin.toString(), 
+      "origin": origin.toString(),
       "resources": resources.map((e) => e.toValue()).toList(),
       "frame": frame?.toMap()
     };
@@ -4926,14 +4931,15 @@ class PermissionRequest {
 ///Class that represents the response used by the [WebView.onPermissionRequest] event.
 class PermissionResponse {
   ///Resources granted to be accessed by origin.
+  ///
+  ///**NOTE for iOS**: not used. The [action] taken is based on the [PermissionRequest.resources].
   List<PermissionResourceType> resources;
 
   ///Indicate the [PermissionResponseAction] to take in response of a permission request.
   PermissionResponseAction? action;
 
   PermissionResponse(
-      {this.resources = const [],
-        this.action = PermissionResponseAction.DENY});
+      {this.resources = const [], this.action = PermissionResponseAction.DENY});
 
   Map<String, dynamic> toMap() {
     return {
@@ -4995,6 +5001,11 @@ class NavigationActionPolicy {
   ///Allow the navigation to continue.
   static const ALLOW = const NavigationActionPolicy._internal(1);
 
+  ///Turn the navigation into a download.
+  ///
+  ///**NOTE**: available only on iOS 14.5+. It will fallback to [CANCEL].
+  static const DOWNLOAD = const NavigationActionPolicy._internal(2);
+
   bool operator ==(value) => value == _value;
 
   @override
@@ -5763,6 +5774,11 @@ class NavigationAction {
   ///**NOTE**: available only on iOS.
   FrameInfo? targetFrame;
 
+  ///A value indicating whether the web content used a download attribute to indicate that this should be downloaded.
+  ///
+  ///**NOTE**: available only on iOS.
+  bool? shouldPerformDownload;
+
   NavigationAction(
       {required this.request,
       required this.isForMainFrame,
@@ -5775,7 +5791,8 @@ class NavigationAction {
       @Deprecated("Use sourceFrame instead") this.iosSourceFrame,
       this.sourceFrame,
       @Deprecated("Use targetFrame instead") this.iosTargetFrame,
-      this.targetFrame}) {
+      this.targetFrame,
+      this.shouldPerformDownload}) {
     // ignore: deprecated_member_use_from_same_package
     this.hasGesture = this.hasGesture ?? this.androidHasGesture;
     // ignore: deprecated_member_use_from_same_package
@@ -5820,7 +5837,8 @@ class NavigationAction {
             // ignore: deprecated_member_use_from_same_package
             IOSWKFrameInfo.fromMap(map["targetFrame"]?.cast<String, dynamic>()),
         targetFrame:
-            FrameInfo.fromMap(map["targetFrame"]?.cast<String, dynamic>()));
+            FrameInfo.fromMap(map["targetFrame"]?.cast<String, dynamic>()),
+        shouldPerformDownload: map["shouldPerformDownload"]);
   }
 
   Map<String, dynamic> toMap() {
@@ -5849,6 +5867,7 @@ class NavigationAction {
       "iosTargetFrame": targetFrame?.toMap() ?? iosTargetFrame?.toMap(),
       // ignore: deprecated_member_use_from_same_package
       "targetFrame": targetFrame?.toMap() ?? iosTargetFrame?.toMap(),
+      "shouldPerformDownload": shouldPerformDownload
     };
   }
 
@@ -8955,6 +8974,11 @@ class NavigationResponseAction {
   ///Allow the navigation to continue.
   static const ALLOW = const NavigationResponseAction._internal(1);
 
+  ///Turn the navigation into a download.
+  ///
+  ///**NOTE**: available only on iOS 14.5+. It will fallback to [CANCEL].
+  static const DOWNLOAD = const NavigationResponseAction._internal(2);
+
   bool operator ==(value) => value == _value;
 
   @override
@@ -10687,19 +10711,16 @@ class MediaPlaybackState {
   static const NONE = const MediaPlaybackState._internal(0);
 
   ///The media is playing.
-  static const PLAYING =
-  const MediaPlaybackState._internal(1);
+  static const PLAYING = const MediaPlaybackState._internal(1);
 
   ///The media playback is paused.
-  static const PAUSED =
-  const MediaPlaybackState._internal(2);
+  static const PAUSED = const MediaPlaybackState._internal(2);
 
   ///The media is not playing, and cannot be resumed until the user revokes the suspension.
-  static const SUSPENDED =
-  const MediaPlaybackState._internal(3);
+  static const SUSPENDED = const MediaPlaybackState._internal(3);
 
   bool operator ==(value) => value == _value;
 
   @override
   int get hashCode => _value.hashCode;
-}
+}