Added isRunning method to the HeadlessInAppWebView class, Fixed iOS WebMessageListener javascript implementation not calling event listeners when onmessage is set, Fixed onCreateContextMenu event on Android where hitTestResult has always null values, fix #742

CHANGELOG.md

@@ -1,3 +1,10 @@
+## 5.2.1
+
+- Added `isRunning` method to the `HeadlessInAppWebView` class
+- Fixed iOS `WebMessageListener` javascript implementation not calling event listeners when `onmessage` is set
+- Fixed `onCreateContextMenu` event on Android where `hitTestResult` has always `null` values
+- Fixed "java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.SearchView.setQuery(java.lang.CharSequence, boolean)' on a null object reference" [#742](https://github.com/pichillilorenzo/flutter_inappwebview/issues/742)
+
 ## 5.2.0
 
 - Added `WebMessageChannel` and `WebMessageListener` features

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

@@ -401,43 +401,57 @@ public class InAppBrowserActivity extends AppCompatActivity implements InAppBrow
 
   @Override
   public void didChangeTitle(String title) {
-    if (options.toolbarTopFixedTitle == null || options.toolbarTopFixedTitle.isEmpty()) {
+    if (actionBar != null && (options.toolbarTopFixedTitle == null || options.toolbarTopFixedTitle.isEmpty())) {
       actionBar.setTitle(title);
     }
   }
 
   @Override
   public void didStartNavigation(String url) {
-    progressBar.setProgress(0);
+    if (progressBar != null) {
-    searchView.setQuery(url, false);
+      progressBar.setProgress(0);
+    }
+    if (searchView != null) {
+      searchView.setQuery(url, false);
+    }
   }
 
   @Override
   public void didUpdateVisitedHistory(String url) {
-    searchView.setQuery(url, false);
+    if (searchView != null) {
+      searchView.setQuery(url, false);
+    }
   }
 
   @Override
   public void didFinishNavigation(String url) {
-    searchView.setQuery(url, false);
+    if (searchView != null) {
-    progressBar.setProgress(0);
+      searchView.setQuery(url, false);
+    }
+    if (progressBar != null) {
+      progressBar.setProgress(0);
+    }
   }
 
   @Override
   public void didFailNavigation(String url, int errorCode, String description) {
-    progressBar.setProgress(0);
+    if (progressBar != null) {
+      progressBar.setProgress(0);
+    }
   }
 
   @Override
   public void didChangeProgress(int progress) {
-    progressBar.setVisibility(View.VISIBLE);
+    if (progressBar != null) {
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+      progressBar.setVisibility(View.VISIBLE);
-      progressBar.setProgress(progress, true);
+      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-    } else {
+        progressBar.setProgress(progress, true);
-      progressBar.setProgress(progress);
+      } else {
-    }
+        progressBar.setProgress(progress);
-    if (progress == 100) {
+      }
-      progressBar.setVisibility(View.GONE);
+      if (progress == 100) {
+        progressBar.setVisibility(View.GONE);
+      }
     }
   }
 

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

@@ -232,11 +232,11 @@ final public class InAppWebView extends InputAwareWebView {
 
     if (options.userAgent != null && !options.userAgent.isEmpty())
       settings.setUserAgentString(options.userAgent);
-    else if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1)
+    else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1)
       settings.setUserAgentString(WebSettings.getDefaultUserAgent(getContext()));
 
     if (options.applicationNameForUserAgent != null && !options.applicationNameForUserAgent.isEmpty()) {
-      if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
         String userAgent = (options.userAgent != null && !options.userAgent.isEmpty()) ? options.userAgent : WebSettings.getDefaultUserAgent(getContext());
         String userAgentWithApplicationName = userAgent + " " + options.applicationNameForUserAgent;
         settings.setUserAgentString(userAgentWithApplicationName);
@@ -390,7 +390,7 @@ final public class InAppWebView extends InputAwareWebView {
       @Override
       public void run() {
         int newPosition = getScrollY();
-        if(initialPositionScrollStoppedTask - newPosition == 0){
+        if (initialPositionScrollStoppedTask - newPosition == 0) {
           // has stopped
           onScrollStopped();
         } else {
@@ -436,8 +436,7 @@ final public class InAppWebView extends InputAwareWebView {
 
         if (options.disableHorizontalScroll && options.disableVerticalScroll) {
           return (event.getAction() == MotionEvent.ACTION_MOVE);
-        }
+        } else if (options.disableHorizontalScroll || options.disableVerticalScroll) {
-        else if (options.disableHorizontalScroll || options.disableVerticalScroll) {
           switch (event.getAction()) {
             case MotionEvent.ACTION_DOWN: {
               // save the x
@@ -512,8 +511,7 @@ final public class InAppWebView extends InputAwareWebView {
       clearFormData();
       settings.setSavePassword(false);
       settings.setSaveFormData(false);
-    }
+    } else {
-    else {
       settings.setCacheMode(WebSettings.LOAD_DEFAULT);
       settings.setAppCacheEnabled(true);
       settings.setSavePassword(true);
@@ -703,7 +701,7 @@ final public class InAppWebView extends InputAwareWebView {
       settings.setUserAgentString(newOptions.userAgent);
 
     if (newOptionsMap.get("applicationNameForUserAgent") != null && !options.applicationNameForUserAgent.equals(newOptions.applicationNameForUserAgent) && !newOptions.applicationNameForUserAgent.isEmpty()) {
-      if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
         String userAgent = (newOptions.userAgent != null && !newOptions.userAgent.isEmpty()) ? newOptions.userAgent : WebSettings.getDefaultUserAgent(getContext());
         String userAgentWithApplicationName = userAgent + " " + options.applicationNameForUserAgent;
         settings.setUserAgentString(userAgentWithApplicationName);
@@ -797,7 +795,7 @@ final public class InAppWebView extends InputAwareWebView {
 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N)
       if (newOptionsMap.get("disabledActionModeMenuItems") != null && (options.disabledActionModeMenuItems == null ||
-            !options.disabledActionModeMenuItems.equals(newOptions.disabledActionModeMenuItems)))
+              !options.disabledActionModeMenuItems.equals(newOptions.disabledActionModeMenuItems)))
         settings.setDisabledActionModeMenuItems(newOptions.disabledActionModeMenuItems);
 
     if (newOptionsMap.get("fantasyFontFamily") != null && !options.fantasyFontFamily.equals(newOptions.fantasyFontFamily))
@@ -834,7 +832,7 @@ final public class InAppWebView extends InputAwareWebView {
       settings.setMinimumLogicalFontSize(newOptions.minimumLogicalFontSize);
 
     if (newOptionsMap.get("initialScale") != null && !options.initialScale.equals(newOptions.initialScale))
-        setInitialScale(newOptions.initialScale);
+      setInitialScale(newOptions.initialScale);
 
     if (newOptionsMap.get("needInitialFocus") != null && options.needInitialFocus != newOptions.needInitialFocus)
       settings.setNeedInitialFocus(newOptions.needInitialFocus);
@@ -926,7 +924,7 @@ final public class InAppWebView extends InputAwareWebView {
 
     if (newOptionsMap.get("rendererPriorityPolicy") != null &&
             (options.rendererPriorityPolicy.get("rendererRequestedPriority") != newOptions.rendererPriorityPolicy.get("rendererRequestedPriority") ||
-            options.rendererPriorityPolicy.get("waivedWhenNotVisible") != newOptions.rendererPriorityPolicy.get("waivedWhenNotVisible")) &&
+                    options.rendererPriorityPolicy.get("waivedWhenNotVisible") != newOptions.rendererPriorityPolicy.get("waivedWhenNotVisible")) &&
             Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
       setRendererPriorityPolicy(
               (int) newOptions.rendererPriorityPolicy.get("rendererRequestedPriority"),
@@ -1120,7 +1118,7 @@ final public class InAppWebView extends InputAwareWebView {
 
     List<HashMap<String, String>> history = new ArrayList<HashMap<String, String>>();
 
-    for(int i = 0; i < currentSize; i++) {
+    for (int i = 0; i < currentSize; i++) {
       WebHistoryItem historyItem = currentList.getItemAtIndex(i);
       HashMap<String, String> historyItemMap = new HashMap<>();
 
@@ -1140,10 +1138,10 @@ final public class InAppWebView extends InputAwareWebView {
   }
 
   @Override
-  protected void onScrollChanged (int x,
+  protected void onScrollChanged(int x,
-                                  int y,
+                                 int y,
-                                  int oldX,
+                                 int oldX,
-                                  int oldY) {
+                                 int oldY) {
     super.onScrollChanged(x, y, oldX, oldY);
 
     if (floatingContextMenu != null) {
@@ -1194,8 +1192,7 @@ final public class InAppWebView extends InputAwareWebView {
     final String newUserAgent;
     if (enabled) {
       newUserAgent = webSettings.getUserAgentString().replace("Mobile", "eliboM").replace("Android", "diordnA");
-    }
+    } else {
-    else {
       newUserAgent = webSettings.getUserAgentString().replace("eliboM", "Mobile").replace("diordnA", "Android");
     }
 
@@ -1237,12 +1234,9 @@ final public class InAppWebView extends InputAwareWebView {
 
   private void sendOnCreateContextMenuEvent() {
     HitTestResult hitTestResult = getHitTestResult();
-    Map<String, Object> hitTestResultMap = new HashMap<>();
-    hitTestResultMap.put("type", hitTestResult.getType());
-    hitTestResultMap.put("extra", hitTestResult.getExtra());
-
     Map<String, Object> obj = new HashMap<>();
-    obj.put("hitTestResult", hitTestResultMap);
+    obj.put("type", hitTestResult.getType());
+    obj.put("extra", hitTestResult.getExtra());
     channel.invokeMethod("onCreateContextMenu", obj);
   }
 
@@ -1283,21 +1277,21 @@ final public class InAppWebView extends InputAwareWebView {
       // workaround to hide the Keyboard when the user click outside
       // on something not focusable such as input or a textarea.
       containerView
-        .getHandler()
+              .getHandler()
-        .postDelayed(
+              .postDelayed(
-          new Runnable() {
+                      new Runnable() {
-            @Override
+                        @Override
-            public void run() {
+                        public void run() {
-              InputMethodManager imm =
+                          InputMethodManager imm =
-                      (InputMethodManager) getContext().getSystemService(INPUT_METHOD_SERVICE);
+                                  (InputMethodManager) getContext().getSystemService(INPUT_METHOD_SERVICE);
-              if (imm != null && !imm.isAcceptingText()) {
+                          if (imm != null && !imm.isAcceptingText()) {
 
-                imm.hideSoftInputFromWindow(
+                            imm.hideSoftInputFromWindow(
-                        containerView.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
+                                    containerView.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
-              }
+                          }
-            }
+                        }
-          },
+                      },
-          128);
+                      128);
     }
     return connection;
   }
@@ -1353,9 +1347,9 @@ final public class InAppWebView extends InputAwareWebView {
     if (contextMenu != null) {
       customMenuItems = (List<Map<String, Object>>) contextMenu.get("menuItems");
       Map<String, Object> contextMenuOptionsMap = (Map<String, Object>) contextMenu.get("options");
-     if (contextMenuOptionsMap != null) {
+      if (contextMenuOptionsMap != null) {
-       contextMenuOptions.parse(contextMenuOptionsMap);
+        contextMenuOptions.parse(contextMenuOptionsMap);
-     }
+      }
     }
     customMenuItems = customMenuItems == null ? new ArrayList<Map<String, Object>>() : customMenuItems;
 
@@ -1604,7 +1598,7 @@ final public class InAppWebView extends InputAwareWebView {
             .replace(PluginScriptsUtil.VAR_RESULT_UUID, resultUuid);
 
     sourceToInject = userContentController.generateCodeForScriptEvaluation(sourceToInject, contentWorld);
-    evaluateJavascript(sourceToInject,  null);
+    evaluateJavascript(sourceToInject, null);
   }
 
   @TargetApi(Build.VERSION_CODES.LOLLIPOP)
@@ -1621,7 +1615,7 @@ final public class InAppWebView extends InputAwareWebView {
       }
     });
   }
-  
+
   public boolean canScrollVertically() {
     return computeVerticalScrollRange() > computeVerticalScrollExtent();
   }

example/.flutter-plugins-dependencies

@@ -1 +1 @@
-{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"flutter_downloader","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/flutter_downloader-1.5.2/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":[]},{"name":"integration_test","path":"/Users/lorenzopichilli/fvm/versions/2.1.0-10.0.pre/packages/integration_test/","dependencies":[]},{"name":"path_provider","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/path_provider-2.0.0-nullsafety/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.1.0+2/","dependencies":[]},{"name":"url_launcher","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/url_launcher-6.0.0-nullsafety.6/","dependencies":[]}],"android":[{"name":"flutter_downloader","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/flutter_downloader-1.5.2/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":[]},{"name":"integration_test","path":"/Users/lorenzopichilli/fvm/versions/2.1.0-10.0.pre/packages/integration_test/","dependencies":[]},{"name":"path_provider","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/path_provider-2.0.0-nullsafety/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.1.0+2/","dependencies":[]},{"name":"url_launcher","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/url_launcher-6.0.0-nullsafety.6/","dependencies":[]}],"macos":[{"name":"path_provider_macos","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/path_provider_macos-0.0.5-nullsafety/","dependencies":[]},{"name":"url_launcher_macos","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/url_launcher_macos-0.1.0-nullsafety.2/","dependencies":[]}],"linux":[{"name":"path_provider_linux","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/path_provider_linux-0.2.0-nullsafety/","dependencies":[]},{"name":"url_launcher_linux","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/url_launcher_linux-0.1.0-nullsafety.3/","dependencies":[]}],"windows":[{"name":"path_provider_windows","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/path_provider_windows-0.1.0-nullsafety.3/","dependencies":[]},{"name":"url_launcher_windows","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/url_launcher_windows-0.1.0-nullsafety.2/","dependencies":[]}],"web":[]},"dependencyGraph":[{"name":"flutter_downloader","dependencies":[]},{"name":"flutter_inappwebview","dependencies":[]},{"name":"integration_test","dependencies":[]},{"name":"path_provider","dependencies":["path_provider_macos","path_provider_linux","path_provider_windows"]},{"name":"path_provider_linux","dependencies":[]},{"name":"path_provider_macos","dependencies":[]},{"name":"path_provider_windows","dependencies":[]},{"name":"permission_handler","dependencies":[]},{"name":"url_launcher","dependencies":["url_launcher_linux","url_launcher_macos","url_launcher_windows"]},{"name":"url_launcher_linux","dependencies":[]},{"name":"url_launcher_macos","dependencies":[]},{"name":"url_launcher_windows","dependencies":[]}],"date_created":"2021-03-22 16:27:21.616305","version":"2.1.0-10.0.pre"}
+{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"flutter_downloader","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/flutter_downloader-1.5.2/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":[]},{"name":"integration_test","path":"/Users/lorenzopichilli/fvm/versions/2.1.0-10.0.pre/packages/integration_test/","dependencies":[]},{"name":"path_provider","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/path_provider-2.0.0-nullsafety/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.1.0+2/","dependencies":[]},{"name":"url_launcher","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/url_launcher-6.0.0-nullsafety.6/","dependencies":[]}],"android":[{"name":"flutter_downloader","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/flutter_downloader-1.5.2/","dependencies":[]},{"name":"flutter_inappwebview","path":"/Users/lorenzopichilli/Desktop/flutter_inappwebview/","dependencies":[]},{"name":"integration_test","path":"/Users/lorenzopichilli/fvm/versions/2.1.0-10.0.pre/packages/integration_test/","dependencies":[]},{"name":"path_provider","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/path_provider-2.0.0-nullsafety/","dependencies":[]},{"name":"permission_handler","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/permission_handler-5.1.0+2/","dependencies":[]},{"name":"url_launcher","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/url_launcher-6.0.0-nullsafety.6/","dependencies":[]}],"macos":[{"name":"path_provider_macos","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/path_provider_macos-0.0.5-nullsafety/","dependencies":[]},{"name":"url_launcher_macos","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/url_launcher_macos-0.1.0-nullsafety.2/","dependencies":[]}],"linux":[{"name":"path_provider_linux","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/path_provider_linux-0.2.0-nullsafety/","dependencies":[]},{"name":"url_launcher_linux","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/url_launcher_linux-0.1.0-nullsafety.3/","dependencies":[]}],"windows":[{"name":"path_provider_windows","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/path_provider_windows-0.1.0-nullsafety.3/","dependencies":[]},{"name":"url_launcher_windows","path":"/Users/lorenzopichilli/.pub-cache/hosted/pub.dartlang.org/url_launcher_windows-0.1.0-nullsafety.2/","dependencies":[]}],"web":[]},"dependencyGraph":[{"name":"flutter_downloader","dependencies":[]},{"name":"flutter_inappwebview","dependencies":[]},{"name":"integration_test","dependencies":[]},{"name":"path_provider","dependencies":["path_provider_macos","path_provider_linux","path_provider_windows"]},{"name":"path_provider_linux","dependencies":[]},{"name":"path_provider_macos","dependencies":[]},{"name":"path_provider_windows","dependencies":[]},{"name":"permission_handler","dependencies":[]},{"name":"url_launcher","dependencies":["url_launcher_linux","url_launcher_macos","url_launcher_windows"]},{"name":"url_launcher_linux","dependencies":[]},{"name":"url_launcher_macos","dependencies":[]},{"name":"url_launcher_windows","dependencies":[]}],"date_created":"2021-03-23 16:33:10.809487","version":"2.1.0-10.0.pre"}

ios/Classes/Types/WebMessageListener.swift

@@ -136,10 +136,9 @@ public class WebMessageListener : FlutterMethodCallDelegate {
                         var event = {data: '\(messageEscaped)'};
                         if (webMessageListener.onmessage != null) {
                             webMessageListener.onmessage(event);
-                        } else {
+                        }
-                            for (var listener of webMessageListener.listeners) {
+                        for (var listener of webMessageListener.listeners) {
-                                listener(event);
+                            listener(event);
-                            }
                         }
                     }
                 })();

lib/src/in_app_webview/android/in_app_webview_controller.dart

@@ -7,6 +7,7 @@ import '../_static_channel.dart';
 
 import '../../types.dart';
 import '../../android/webview_feature.dart';
+import '../in_app_webview_controller.dart';
 
 ///Class represents the Android controller that contains only android-specific methods for the WebView.
 class AndroidInAppWebViewController {
@@ -42,7 +43,7 @@ class AndroidInAppWebViewController {
   }
 
   ///Does a best-effort attempt to pause any processing that can be paused safely, such as animations and geolocation. Note that this call does not pause JavaScript.
-  ///To pause JavaScript globally, use [pauseTimers()]. To resume WebView, call [resume()].
+  ///To pause JavaScript globally, use [InAppWebViewController.pauseTimers]. To resume WebView, call [resume].
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebView#onPause()
   Future<void> pause() async {
@@ -50,7 +51,7 @@ class AndroidInAppWebViewController {
     await _channel.invokeMethod('pause', args);
   }
 
-  ///Resumes a WebView after a previous call to [pause()].
+  ///Resumes a WebView after a previous call to [pause].
   ///
   ///**Official Android API**: https://developer.android.com/reference/android/webkit/WebView#onResume()
   Future<void> resume() async {

lib/src/in_app_webview/headless_in_app_webview.dart

@@ -20,7 +20,9 @@ class HeadlessInAppWebView implements WebView {
   ///View ID.
   late final String id;
 
-  bool _isDisposed = true;
+  bool _started = false;
+  bool _running = false;
+
   static const MethodChannel _sharedChannel =
       const MethodChannel('com.pichillilorenzo/flutter_headless_inappwebview');
 
@@ -111,10 +113,10 @@ class HeadlessInAppWebView implements WebView {
 
   ///Runs the headless WebView.
   Future<void> run() async {
-    if (!_isDisposed) {
+    if (_started) {
       return;
     }
-    _isDisposed = false;
+    _started = true;
     Map<String, dynamic> args = <String, dynamic>{};
     args.putIfAbsent('id', () => id);
     args.putIfAbsent(
@@ -135,17 +137,24 @@ class HeadlessInAppWebView implements WebView {
                       PullToRefreshOptions(enabled: false).toMap()
             });
     await _sharedChannel.invokeMethod('createHeadlessWebView', args);
+    _running = true;
   }
 
   ///Disposes the headless WebView.
   Future<void> dispose() async {
-    if (_isDisposed) {
+    if (!_running) {
       return;
     }
     Map<String, dynamic> args = <String, dynamic>{};
     args.putIfAbsent('id', () => id);
     await _sharedChannel.invokeMethod('disposeHeadlessWebView', args);
-    _isDisposed = true;
+    _started = false;
+    _running = false;
+  }
+
+  ///Indicates if the headless WebView is running or not.
+  bool isRunning() {
+    return _running;
   }
 
   @override

pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_inappwebview
 description: A Flutter plugin that allows you to add an inline webview, to use an headless webview, and to open an in-app browser window.
-version: 5.2.0
+version: 5.2.1
 homepage: https://github.com/pichillilorenzo/flutter_inappwebview
 
 environment: