fix #1455

Author: pichillilorenzo

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 6.0.0-beta.21
+
+- Fixed "Android plugin version 6 - UserScripts not executing on new tabs." [#1455](https://github.com/pichillilorenzo/flutter_inappwebview/issues/1455)
+
 ## 6.0.0-beta.20
 
 - Using Android `WebViewClientCompat` for Chromium-based WebView if the WebView package major version is >= 73 (https://bugs.chromium.org/p/chromium/issues/detail?id=925887)

android/src/main/java/com/pichillilorenzo/flutter_inappwebview/webview/in_app_webview/FlutterWebView.java

@@ -1,5 +1,6 @@
 package com.pichillilorenzo.flutter_inappwebview.webview.in_app_webview;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.hardware.display.DisplayManager;
 import android.os.Build;
@@ -88,7 +89,12 @@ public View getView() {
     return pullToRefreshLayout != null ? pullToRefreshLayout : webView;
   }
 
+  @SuppressLint("RestrictedApi")
   public void makeInitialLoad(HashMap<String, Object> params) {
+    if (webView == null) {
+      return;
+    }
+
     Integer windowId = (Integer) params.get("windowId");
     Map<String, Object> initialUrlRequest = (Map<String, Object>) params.get("initialUrlRequest");
     final String initialFile = (String) params.get("initialFile");
@@ -99,6 +105,23 @@ public void makeInitialLoad(HashMap<String, Object> params) {
       if (resultMsg != null) {
         ((WebView.WebViewTransport) resultMsg.obj).setWebView(webView);
         resultMsg.sendToTarget();
+        if (WebViewFeature.isFeatureSupported(WebViewFeature.DOCUMENT_START_SCRIPT)) {
+          // for some reason, if a WebView is created using a window id,
+          // the initial plugin and user scripts injected
+          // with WebViewCompat.addDocumentStartJavaScript will not be added!
+          // https://github.com/pichillilorenzo/flutter_inappwebview/issues/1455
+          //
+          // Also, calling the prepareAndAddUserScripts method right after won't work,
+          // so use the View.post method here.
+          webView.post(new Runnable() {
+            @Override
+            public void run() {
+              if (webView != null) {
+                webView.prepareAndAddUserScripts();
+              }
+            }
+          });
+        }
       }
     } else {
       if (initialFile != null) {

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

@@ -61,7 +61,6 @@
 import androidx.webkit.WebViewFeature;
 
 import com.pichillilorenzo.flutter_inappwebview.InAppWebViewFlutterPlugin;
-import com.pichillilorenzo.flutter_inappwebview.InAppWebViewStatic;
 import com.pichillilorenzo.flutter_inappwebview.R;
 import com.pichillilorenzo.flutter_inappwebview.Util;
 import com.pichillilorenzo.flutter_inappwebview.content_blocker.ContentBlocker;
@@ -166,7 +165,7 @@ final public class InAppWebView extends InputAwareWebView implements InAppWebVie
   public Map<String, WebMessageChannel> webMessageChannels = new HashMap<>();
   public List<WebMessageListener> webMessageListeners = new ArrayList<>();
 
-  private List<UserScript> initialUserOnlyScript = new ArrayList<>();
+  private List<UserScript> initialUserOnlyScripts = new ArrayList<>();
 
   @Nullable
   public FindInteractionController findInteractionController;
@@ -198,7 +197,7 @@ public InAppWebView(Context context, @NonNull InAppWebViewFlutterPlugin plugin,
     this.windowId = windowId;
     this.customSettings = customSettings;
     this.contextMenu = contextMenu;
-    this.initialUserOnlyScript = userScripts;
+    this.initialUserOnlyScripts = userScripts;
     if (plugin != null && plugin.activity != null) {
       plugin.activity.registerForContextMenu(this);
     }
@@ -260,7 +259,13 @@ public void prepare() {
       WebViewCompat.setWebViewRenderProcessClient(this, inAppWebViewRenderProcessClient);
     }
 
-    prepareAndAddUserScripts();
+    if (windowId == null || !WebViewFeature.isFeatureSupported(WebViewFeature.DOCUMENT_START_SCRIPT)) {
+      // for some reason, if a WebView is created using a window id,
+      // the initial plugin and user scripts injected
+      // with WebViewCompat.addDocumentStartJavaScript will not be added!
+      // https://github.com/pichillilorenzo/flutter_inappwebview/issues/1455
+      prepareAndAddUserScripts();
+    }
 
     if (customSettings.useOnDownloadStart)
       setDownloadListener(new DownloadStartListener());
@@ -552,7 +557,7 @@ public boolean onLongClick(View v) {
     });
   }
 
-  private void prepareAndAddUserScripts() {
+  public void prepareAndAddUserScripts() {
     userContentController.addPluginScript(PromisePolyfillJS.PROMISE_POLYFILL_JS_PLUGIN_SCRIPT);
     userContentController.addPluginScript(JavaScriptBridgeJS.JAVASCRIPT_BRIDGE_JS_PLUGIN_SCRIPT);
     userContentController.addPluginScript(ConsoleLogJS.CONSOLE_LOG_JS_PLUGIN_SCRIPT);
@@ -571,7 +576,7 @@ private void prepareAndAddUserScripts() {
     if (!customSettings.useHybridComposition) {
       userContentController.addPluginScript(PluginScriptsUtil.CHECK_GLOBAL_KEY_DOWN_EVENT_TO_HIDE_CONTEXT_MENU_JS_PLUGIN_SCRIPT);
     }
-    this.userContentController.addUserOnlyScripts(this.initialUserOnlyScript);
+    this.userContentController.addUserOnlyScripts(this.initialUserOnlyScripts);
   }
 
   public void setIncognito(boolean enabled) {

example/ios/Flutter/flutter_export_environment.sh

@@ -3,12 +3,11 @@
 export "FLUTTER_ROOT=/Users/lorenzopichilli/fvm/versions/3.3.6"
 export "FLUTTER_APPLICATION_PATH=/Users/lorenzopichilli/Desktop/flutter_inappwebview/example"
 export "COCOAPODS_PARALLEL_CODE_SIGN=true"
-export "FLUTTER_TARGET=integration_test/webview_flutter_test.dart"
+export "FLUTTER_TARGET=lib/main.dart"
 export "FLUTTER_BUILD_DIR=build"
 export "FLUTTER_BUILD_NAME=1.0.0"
 export "FLUTTER_BUILD_NUMBER=1"
-export "DART_DEFINES=RkxVVFRFUl9XRUJfQVVUT19ERVRFQ1Q9dHJ1ZQ=="
 export "DART_OBFUSCATION=false"
 export "TRACK_WIDGET_CREATION=true"
 export "TREE_SHAKE_ICONS=false"
-export "PACKAGE_CONFIG=/Users/lorenzopichilli/Desktop/flutter_inappwebview/example/.dart_tool/package_config.json"
+export "PACKAGE_CONFIG=.dart_tool/package_config.json"

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: 6.0.0-beta.20
+version: 6.0.0-beta.21
 homepage: https://inappwebview.dev/
 repository: https://github.com/pichillilorenzo/flutter_inappwebview
 issue_tracker: https://github.com/pichillilorenzo/flutter_inappwebview/issues