fix: resolved the ProviderNotFoundException The HeadlinesFeedBloc instance is being passed from the HeadlinesFeedPage to the HeadlinesFilterPage using go_router's extra parameter, and the HeadlinesFilterPage has been updated to receive the BLoC instance via its constructor. The router has also been updated to pass the BLoC instance to the HeadlinesFilterPage.

Author: fulleni

lib/headlines-feed/view/headlines_feed_page.dart

@@ -142,7 +142,11 @@ class _HeadlinesFeedViewState extends State<_HeadlinesFeedView> {
                     tooltip: l10n.headlinesFeedFilterTooltip,
                     onPressed: () {
                       // Navigate to the filter page route
-                      context.goNamed(Routes.feedFilterName);
+                      final headlinesFeedBloc = context.read<HeadlinesFeedBloc>();
+                      context.goNamed(
+                        Routes.feedFilterName,
+                        extra: headlinesFeedBloc,
+                      );
                     },
                   ),
                   if (isFilterApplied)

lib/headlines-feed/view/headlines_filter_page.dart

@@ -21,7 +21,9 @@ import 'package:ht_sources_client/ht_sources_client.dart';
 /// {@endtemplate}
 class HeadlinesFilterPage extends StatefulWidget {
   /// {@macro headlines_filter_page}
-  const HeadlinesFilterPage({super.key});
+  const HeadlinesFilterPage({required this.headlinesFeedBloc, super.key});
+
+  final HeadlinesFeedBloc headlinesFeedBloc;
 
   @override
   State<HeadlinesFilterPage> createState() => _HeadlinesFilterPageState();
@@ -37,7 +39,7 @@ class _HeadlinesFilterPageState extends State<HeadlinesFilterPage> {
   void initState() {
     super.initState();
     // Initialize temporary state from the currently active filters in the BLoC
-    final currentState = context.read<HeadlinesFeedBloc>().state;
+    final currentState = widget.headlinesFeedBloc.state;
     if (currentState is HeadlinesFeedLoaded) {
       _tempSelectedCategories = List.from(currentState.filter.categories ?? []);
       _tempSelectedSources = List.from(currentState.filter.sources ?? []);

lib/router/router.dart

@@ -11,6 +11,7 @@ import 'package:ht_main/authentication/view/authentication_page.dart';
 import 'package:ht_main/authentication/view/email_link_sent_page.dart';
 import 'package:ht_main/authentication/view/email_sign_in_page.dart';
 import 'package:ht_main/headline-details/view/headline_details_page.dart';
+import 'package:ht_main/headlines-feed/bloc/headlines_feed_bloc.dart';
 import 'package:ht_main/headlines-feed/view/category_filter_page.dart'; // Import new page
 import 'package:ht_main/headlines-feed/view/country_filter_page.dart'; // Import new page
 import 'package:ht_main/headlines-feed/view/headlines_feed_page.dart';
@@ -284,12 +285,15 @@ GoRouter createRouter({required ValueNotifier<AppStatus> authStatusNotifier}) {
                     path: Routes.feedFilter, // Relative path: 'filter'
                     name: Routes.feedFilterName,
                     // Use MaterialPage with fullscreenDialog for modal presentation
-                    pageBuilder:
-                        (context, state) => const MaterialPage(
-                          fullscreenDialog: true,
-                          child:
-                              HeadlinesFilterPage(), // Main filter selection page
-                        ),
+                    pageBuilder: (context, state) {
+                      final headlinesFeedBloc = state.extra as HeadlinesFeedBloc;
+                      return MaterialPage(
+                        fullscreenDialog: true,
+                        child: HeadlinesFilterPage(
+                          headlinesFeedBloc: headlinesFeedBloc,
+                        ), // Main filter selection page
+                      );
+                    },
                     routes: [
                       // Sub-route for category selection
                       GoRoute(