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lib/14/01/pages/app/app_navigation.dart

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+import 'package:flutter/material.dart';
+import '../page_a.dart';
+import '../page_b.dart';
+import '../page_c.dart';
+import '../home_page.dart';
+
+ValueNotifier<List<String>> router = ValueNotifier(['/']);
+
+class AppNavigation extends StatefulWidget {
+  const AppNavigation({super.key});
+
+  @override
+  State<AppNavigation> createState() => _AppNavigationState();
+}
+
+class _AppNavigationState extends State<AppNavigation> {
+
+
+  @override
+  void dispose() {
+    router.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return ValueListenableBuilder(
+      valueListenable: router,
+      builder: (_, List<String> value, __) => buildNavigatorByConfig(value),
+    );
+  }
+
+  final Map<String, Page> _pageMap = const {
+    '/': MaterialPage(child: HomePage()),
+    'a': MaterialPage(child: PageA()),
+    'b': MaterialPage(child: PageB()),
+    'c': MaterialPage(child: PageC()),
+  };
+
+  Widget buildNavigatorByConfig(List<String> value) {
+    return Navigator(
+      onPopPage: _onPopPage,
+      pages: router.value.map((e) => _pageMap[e]!).toList(),
+    );
+  }
+
+  bool _onPopPage(Route route, result) {
+    return route.didPop(result);
+  }
+}