diff --git a/examples/api/lib/widgets/navigator_pop_handler/navigator_pop_handler.0.dart b/examples/api/lib/widgets/navigator_pop_handler/navigator_pop_handler.0.dart
index d81b74f65f..46d97b62cb 100644
--- a/examples/api/lib/widgets/navigator_pop_handler/navigator_pop_handler.0.dart
+++ b/examples/api/lib/widgets/navigator_pop_handler/navigator_pop_handler.0.dart
@@ -16,10 +16,35 @@ class NavigatorPopHandlerApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
+      restorationScopeId: 'root',
       initialRoute: '/',
-      routes: <String, WidgetBuilder>{
-        '/': (BuildContext context) => _HomePage(),
-        '/nested_navigators': (BuildContext context) => const NestedNavigatorsPage(),
+      onGenerateRoute: (RouteSettings settings) {
+        return switch (settings.name) {
+          '/' => MaterialPageRoute<void>(
+            settings: const RouteSettings(
+              name: '/',
+            ),
+            builder: (BuildContext context) {
+              return _HomePage();
+            },
+          ),
+          '/nested_navigators' => MaterialPageRoute<void>(
+            settings: const RouteSettings(
+              name: '/nested_navigators',
+            ),
+            builder: (BuildContext context) {
+              return const _NestedNavigatorsPage();
+            },
+          ),
+          _ => MaterialPageRoute<void>(
+            settings: const RouteSettings(
+              name: 'unknown_page',
+            ),
+            builder: (BuildContext context) {
+              return const _UnknownPage();
+            },
+          ),
+        };
       },
     );
   }
@@ -43,7 +68,7 @@ class _HomePage extends StatelessWidget {
               title: const Text('Nested Navigator route'),
               subtitle: const Text('This route has another Navigator widget in addition to the one inside MaterialApp above.'),
               onTap: () {
-                Navigator.of(context).pushNamed('/nested_navigators');
+                Navigator.of(context).restorablePushNamed('/nested_navigators');
               },
             ),
           ],
@@ -53,14 +78,14 @@ class _HomePage extends StatelessWidget {
   }
 }
 
-class NestedNavigatorsPage extends StatefulWidget {
-  const NestedNavigatorsPage({super.key});
+class _NestedNavigatorsPage extends StatefulWidget {
+  const _NestedNavigatorsPage();
 
   @override
-  State<NestedNavigatorsPage> createState() => _NestedNavigatorsPageState();
+  State<_NestedNavigatorsPage> createState() => _NestedNavigatorsPageState();
 }
 
-class _NestedNavigatorsPageState extends State<NestedNavigatorsPage> {
+class _NestedNavigatorsPageState extends State<_NestedNavigatorsPage> {
   final GlobalKey<NavigatorState> _nestedNavigatorKey = GlobalKey<NavigatorState>();
 
   @override
@@ -71,36 +96,45 @@ class _NestedNavigatorsPageState extends State<NestedNavigatorsPage> {
       },
       child: Navigator(
         key: _nestedNavigatorKey,
+        restorationScopeId: 'nested-navigator',
         initialRoute: 'nested_navigators/one',
         onGenerateRoute: (RouteSettings settings) {
-          switch (settings.name) {
-            case 'nested_navigators/one':
-              final BuildContext rootContext = context;
-              return MaterialPageRoute<void>(
-                builder: (BuildContext context) => NestedNavigatorsPageOne(
-                  onBack: () {
-                    Navigator.of(rootContext).pop();
-                  },
-                ),
-              );
-            case 'nested_navigators/one/another_one':
-              return MaterialPageRoute<void>(
-                builder: (BuildContext context) => const NestedNavigatorsPageTwo(
-                ),
-              );
-            default:
-              throw Exception('Invalid route: ${settings.name}');
-          }
+          final BuildContext rootContext = context;
+          return switch (settings.name) {
+            'nested_navigators/one' => MaterialPageRoute<void>(
+              settings: const RouteSettings(
+                name: 'nested_navigators/one',
+              ),
+              builder: (BuildContext context) => _NestedNavigatorsPageOne(
+                onBack: () {
+                  Navigator.of(rootContext).pop();
+                },
+              ),
+            ),
+            'nested_navigators/one/another_one' => MaterialPageRoute<void>(
+              settings: const RouteSettings(
+                name: 'nested_navigators/one',
+              ),
+              builder: (BuildContext context) => const _NestedNavigatorsPageTwo(),
+            ),
+            _ => MaterialPageRoute<void>(
+              settings: const RouteSettings(
+                name: 'unknown_page',
+              ),
+              builder: (BuildContext context) {
+                return const _UnknownPage();
+              },
+            ),
+          };
         },
       ),
     );
   }
 }
 
-class NestedNavigatorsPageOne extends StatelessWidget {
-  const NestedNavigatorsPageOne({
+class _NestedNavigatorsPageOne extends StatelessWidget {
+  const _NestedNavigatorsPageOne({
     required this.onBack,
-    super.key,
   });
 
   final VoidCallback onBack;
@@ -117,7 +151,7 @@ class NestedNavigatorsPageOne extends StatelessWidget {
             const Text('A system back here returns to the home page.'),
             TextButton(
               onPressed: () {
-                Navigator.of(context).pushNamed('nested_navigators/one/another_one');
+                Navigator.of(context).restorablePushNamed('nested_navigators/one/another_one');
               },
               child: const Text('Go to another route in this nested Navigator'),
             ),
@@ -135,10 +169,8 @@ class NestedNavigatorsPageOne extends StatelessWidget {
   }
 }
 
-class NestedNavigatorsPageTwo extends StatelessWidget {
-  const NestedNavigatorsPageTwo({
-    super.key,
-  });
+class _NestedNavigatorsPageTwo extends StatelessWidget {
+  const _NestedNavigatorsPageTwo();
 
   @override
   Widget build(BuildContext context) {
@@ -162,3 +194,22 @@ class NestedNavigatorsPageTwo extends StatelessWidget {
     );
   }
 }
+
+class _UnknownPage extends StatelessWidget {
+  const _UnknownPage();
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      backgroundColor: Colors.grey.withBlue(180),
+      body: const Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: <Widget>[
+            Text('404'),
+          ],
+        ),
+      ),
+    );
+  }
+}
diff --git a/examples/api/lib/widgets/navigator_pop_handler/navigator_pop_handler.1.dart b/examples/api/lib/widgets/navigator_pop_handler/navigator_pop_handler.1.dart
index e619276945..52450103a7 100644
--- a/examples/api/lib/widgets/navigator_pop_handler/navigator_pop_handler.1.dart
+++ b/examples/api/lib/widgets/navigator_pop_handler/navigator_pop_handler.1.dart
@@ -16,7 +16,15 @@ enum _Tab {
 // Each tab has two possible pages.
 enum _TabPage {
   home,
-  one,
+  one;
+
+  static _TabPage? fromName(String? name) {
+    return switch (name) {
+      'home' => _TabPage.home,
+      'one' => _TabPage.one,
+      _ => null,
+    };
+  }
 }
 
 typedef _TabPageCallback = void Function(List<_TabPage> pages);
@@ -29,10 +37,27 @@ class NavigatorPopHandlerApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      initialRoute: '/home',
-      routes: <String, WidgetBuilder>{
-        '/home': (BuildContext context) => const _BottomNavPage(
-        ),
+      initialRoute: '/',
+      restorationScopeId: 'root',
+      onGenerateRoute: (RouteSettings settings) {
+        return switch (settings.name) {
+          '/' => MaterialPageRoute<void>(
+            settings: const RouteSettings(
+              name: '/',
+            ),
+            builder: (BuildContext context) {
+              return const _BottomNavPage();
+            },
+          ),
+          _ => MaterialPageRoute<void>(
+            settings: const RouteSettings(
+              name: 'unknown_page',
+            ),
+            builder: (BuildContext context) {
+              return const _UnknownPage();
+            },
+          ),
+        };
       },
     );
   }
@@ -45,16 +70,16 @@ class _BottomNavPage extends StatefulWidget {
   State<_BottomNavPage> createState() => _BottomNavPageState();
 }
 
-class _BottomNavPageState extends State<_BottomNavPage> {
-  _Tab _tab = _Tab.home;
+class _BottomNavPageState extends State<_BottomNavPage> with RestorationMixin {
+  final _RestorableTab _restorableTab = _RestorableTab();
 
   final GlobalKey _tabHomeKey = GlobalKey();
   final GlobalKey _tabOneKey = GlobalKey();
   final GlobalKey _tabTwoKey = GlobalKey();
 
-  List<_TabPage> _tabHomePages = <_TabPage>[_TabPage.home];
-  List<_TabPage> _tabOnePages = <_TabPage>[_TabPage.home];
-  List<_TabPage> _tabTwoPages = <_TabPage>[_TabPage.home];
+  final _RestorableTabPageList _restorableTabHomePages = _RestorableTabPageList();
+  final _RestorableTabPageList _restorableTabOnePages = _RestorableTabPageList();
+  final _RestorableTabPageList _restorableTabTwoPages = _RestorableTabPageList();
 
   BottomNavigationBarItem _itemForPage(_Tab page) {
     switch (page) {
@@ -83,10 +108,10 @@ class _BottomNavPageState extends State<_BottomNavPage> {
           key: _tabHomeKey,
           title: 'Home Tab',
           color: Colors.grey,
-          pages: _tabHomePages,
-          onChangedPages: (List<_TabPage> pages) {
+          pages: _restorableTabHomePages.value,
+          onChangePages: (List<_TabPage> pages) {
             setState(() {
-              _tabHomePages = pages;
+              _restorableTabHomePages.value = pages;
             });
           },
         );
@@ -95,10 +120,10 @@ class _BottomNavPageState extends State<_BottomNavPage> {
           key: _tabOneKey,
           title: 'Tab One',
           color: Colors.amber,
-          pages: _tabOnePages,
-          onChangedPages: (List<_TabPage> pages) {
+          pages: _restorableTabOnePages.value,
+          onChangePages: (List<_TabPage> pages) {
             setState(() {
-              _tabOnePages = pages;
+              _restorableTabOnePages.value = pages;
             });
           },
         );
@@ -107,10 +132,10 @@ class _BottomNavPageState extends State<_BottomNavPage> {
           key: _tabTwoKey,
           title: 'Tab Two',
           color: Colors.blueGrey,
-          pages: _tabTwoPages,
-          onChangedPages: (List<_TabPage> pages) {
+          pages: _restorableTabTwoPages.value,
+          onChangePages: (List<_TabPage> pages) {
             setState(() {
-              _tabTwoPages = pages;
+              _restorableTabTwoPages.value = pages;
             });
           },
         );
@@ -119,19 +144,43 @@ class _BottomNavPageState extends State<_BottomNavPage> {
 
   void _onItemTapped(int index) {
     setState(() {
-      _tab = _Tab.values.elementAt(index);
+      _restorableTab.value = _Tab.values.elementAt(index);
     });
   }
 
+  // Begin RestorationMixin.
+
+  @override
+  String? get restorationId => 'bottom-nav-page';
+
+  @override
+  void restoreState(RestorationBucket? oldBucket, bool initialRestore) {
+    registerForRestoration(_restorableTab, 'tab');
+    registerForRestoration(_restorableTabHomePages, 'tab-home-pages');
+    registerForRestoration(_restorableTabOnePages, 'tab-one-pages');
+    registerForRestoration(_restorableTabTwoPages, 'tab-two-pages');
+  }
+
+  /// End RestorationMixin.
+
+  @override
+  void dispose() {
+    _restorableTab.dispose();
+    _restorableTabHomePages.dispose();
+    _restorableTabOnePages.dispose();
+    _restorableTabTwoPages.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
       body: Center(
-        child: _getPage(_tab),
+        child: _getPage(_restorableTab.value),
       ),
       bottomNavigationBar: BottomNavigationBar(
         items: _Tab.values.map(_itemForPage).toList(),
-        currentIndex: _Tab.values.indexOf(_tab),
+        currentIndex: _Tab.values.indexOf(_restorableTab.value),
         selectedItemColor: Colors.amber[800],
         onTap: _onItemTapped,
       ),
@@ -143,13 +192,13 @@ class _BottomNavTab extends StatefulWidget {
   const _BottomNavTab({
     super.key,
     required this.color,
-    required this.onChangedPages,
+    required this.onChangePages,
     required this.pages,
     required this.title,
   });
 
   final Color color;
-  final _TabPageCallback onChangedPages;
+  final _TabPageCallback onChangePages;
   final List<_TabPage> pages;
   final String title;
 
@@ -168,22 +217,33 @@ class _BottomNavTabState extends State<_BottomNavTab> {
       },
       child: Navigator(
         key: _navigatorKey,
+        restorationScopeId: 'nested-navigator-${widget.title}',
         onDidRemovePage: (Page<Object?> page) {
-          widget.onChangedPages(<_TabPage>[
+          final _TabPage? tabPage = _TabPage.fromName(page.name);
+          if (tabPage == null) {
+            return;
+          }
+          final List<_TabPage> nextPages = <_TabPage>[
             ...widget.pages,
-          ]..removeLast());
+          ]..remove(tabPage);
+          if (nextPages.length < widget.pages.length) {
+            widget.onChangePages(nextPages);
+          }
         },
         pages: widget.pages.map((_TabPage page) {
           switch (page) {
             case _TabPage.home:
               return MaterialPage<void>(
+                restorationId: _TabPage.home.toString(),
+                name: 'home',
                 child: _LinksPage(
                   title: 'Bottom nav - tab ${widget.title} - route $page',
                   backgroundColor: widget.color,
                   buttons: <Widget>[
                     TextButton(
                       onPressed: () {
-                        widget.onChangedPages(<_TabPage>[
+                        assert(!widget.pages.contains(_TabPage.one));
+                        widget.onChangePages(<_TabPage>[
                           ...widget.pages,
                           _TabPage.one,
                         ]);
@@ -195,13 +255,15 @@ class _BottomNavTabState extends State<_BottomNavTab> {
               );
             case _TabPage.one:
               return MaterialPage<void>(
+                restorationId: _TabPage.one.toString(),
+                name: 'one',
                 child: _LinksPage(
                   backgroundColor: widget.color,
                   title: 'Bottom nav - tab ${widget.title} - route $page',
                   buttons: <Widget>[
                     TextButton(
                       onPressed: () {
-                        widget.onChangedPages(<_TabPage>[
+                        widget.onChangePages(<_TabPage>[
                           ...widget.pages,
                         ]..removeLast());
                       },
@@ -244,3 +306,79 @@ class _LinksPage extends StatelessWidget {
     );
   }
 }
+
+class _UnknownPage extends StatelessWidget {
+  const _UnknownPage();
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      backgroundColor: Colors.grey.withBlue(180),
+      body: const Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: <Widget>[
+            Text('404'),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class _RestorableTab extends RestorableValue<_Tab> {
+  @override
+  _Tab createDefaultValue() => _Tab.home;
+
+  @override
+  void didUpdateValue(_Tab? oldValue) {
+    if (oldValue == null || oldValue != value) {
+      notifyListeners();
+    }
+  }
+
+  @override
+  _Tab fromPrimitives(Object? data) {
+    if (data != null) {
+      final String tabString = data as String;
+      return _Tab.values.firstWhere((_Tab tab) => tabString == tab.name);
+    }
+    return _Tab.home;
+  }
+
+  @override
+  Object toPrimitives() {
+    return value.name;
+  }
+}
+
+class _RestorableTabPageList extends RestorableValue<List<_TabPage>> {
+  @override
+  List<_TabPage> createDefaultValue() => <_TabPage>[_TabPage.home];
+
+  @override
+  void didUpdateValue(List<_TabPage>? oldValue) {
+    if (oldValue == null || oldValue != value) {
+      notifyListeners();
+    }
+  }
+
+  @override
+  List<_TabPage> fromPrimitives(Object? data) {
+    if (data != null) {
+      final String dataString = data as String;
+      final List<String> listOfStrings = dataString.split(',');
+      return listOfStrings.map((String tabPageName) {
+        return _TabPage.values.firstWhere((_TabPage tabPage) => tabPageName == tabPage.name);
+      }).toList();
+    }
+    return <_TabPage>[];
+  }
+
+  @override
+  Object toPrimitives() {
+    return value
+        .map((_TabPage tabPage) => tabPage.name)
+        .join(',');
+  }
+}
diff --git a/examples/api/test/widgets/navigator_pop_handler/navigator_pop_handler.0_test.dart b/examples/api/test/widgets/navigator_pop_handler/navigator_pop_handler.0_test.dart
index 88f29223f6..b1970232eb 100644
--- a/examples/api/test/widgets/navigator_pop_handler/navigator_pop_handler.0_test.dart
+++ b/examples/api/test/widgets/navigator_pop_handler/navigator_pop_handler.0_test.dart
@@ -2,12 +2,40 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
 import 'package:flutter_api_samples/widgets/navigator_pop_handler/navigator_pop_handler.0.dart' as example;
 import 'package:flutter_test/flutter_test.dart';
 
 import '../navigator_utils.dart';
 
 void main() {
+  bool? lastFrameworkHandlesBack;
+  setUp(() async {
+    lastFrameworkHandlesBack = null;
+    TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
+      .setMockMethodCallHandler(SystemChannels.platform, (MethodCall methodCall) async {
+        if (methodCall.method == 'SystemNavigator.setFrameworkHandlesBack') {
+          expect(methodCall.arguments, isA<bool>());
+          lastFrameworkHandlesBack = methodCall.arguments as bool;
+        }
+        return;
+      });
+    await TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
+        .handlePlatformMessage(
+          'flutter/lifecycle',
+          const StringCodec().encodeMessage(AppLifecycleState.resumed.toString()),
+          (ByteData? data) {},
+        );
+  });
+
+  tearDown(() {
+    TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
+        .setMockMethodCallHandler(SystemChannels.platform, null);
+  });
+
   testWidgets('Can go back with system back gesture', (WidgetTester tester) async {
     await tester.pumpWidget(
       const example.NavigatorPopHandlerApp(),
@@ -16,6 +44,9 @@ void main() {
     expect(find.text('Nested Navigators Example'), findsOneWidget);
     expect(find.text('Nested Navigators Page One'), findsNothing);
     expect(find.text('Nested Navigators Page Two'), findsNothing);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isFalse);
+    }
 
     await tester.tap(find.text('Nested Navigator route'));
     await tester.pumpAndSettle();
@@ -23,6 +54,9 @@ void main() {
     expect(find.text('Nested Navigators Example'), findsNothing);
     expect(find.text('Nested Navigators Page One'), findsOneWidget);
     expect(find.text('Nested Navigators Page Two'), findsNothing);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isTrue);
+    }
 
     await tester.tap(find.text('Go to another route in this nested Navigator'));
     await tester.pumpAndSettle();
@@ -30,6 +64,9 @@ void main() {
     expect(find.text('Nested Navigators Example'), findsNothing);
     expect(find.text('Nested Navigators Page One'), findsNothing);
     expect(find.text('Nested Navigators Page Two'), findsOneWidget);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isTrue);
+    }
 
     await simulateSystemBack();
     await tester.pumpAndSettle();
@@ -37,6 +74,9 @@ void main() {
     expect(find.text('Nested Navigators Example'), findsNothing);
     expect(find.text('Nested Navigators Page One'), findsOneWidget);
     expect(find.text('Nested Navigators Page Two'), findsNothing);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isTrue);
+    }
 
     await simulateSystemBack();
     await tester.pumpAndSettle();
@@ -44,5 +84,50 @@ void main() {
     expect(find.text('Nested Navigators Example'), findsOneWidget);
     expect(find.text('Nested Navigators Page One'), findsNothing);
     expect(find.text('Nested Navigators Page Two'), findsNothing);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isFalse);
+    }
+  });
+
+  testWidgets('restoring the app preserves the navigation stack', (WidgetTester tester) async {
+    await tester.pumpWidget(
+      const example.NavigatorPopHandlerApp(),
+    );
+
+    expect(find.text('Nested Navigators Example'), findsOneWidget);
+    expect(find.text('Nested Navigators Page One'), findsNothing);
+    expect(find.text('Nested Navigators Page Two'), findsNothing);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isFalse);
+    }
+
+    await tester.tap(find.text('Nested Navigator route'));
+    await tester.pumpAndSettle();
+
+    expect(find.text('Nested Navigators Example'), findsNothing);
+    expect(find.text('Nested Navigators Page One'), findsOneWidget);
+    expect(find.text('Nested Navigators Page Two'), findsNothing);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isTrue);
+    }
+
+    await tester.tap(find.text('Go to another route in this nested Navigator'));
+    await tester.pumpAndSettle();
+
+    expect(find.text('Nested Navigators Example'), findsNothing);
+    expect(find.text('Nested Navigators Page One'), findsNothing);
+    expect(find.text('Nested Navigators Page Two'), findsOneWidget);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isTrue);
+    }
+
+    await tester.restartAndRestore();
+
+    expect(find.text('Nested Navigators Example'), findsNothing);
+    expect(find.text('Nested Navigators Page One'), findsNothing);
+    expect(find.text('Nested Navigators Page Two'), findsOneWidget);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isTrue);
+    }
   });
 }
diff --git a/examples/api/test/widgets/navigator_pop_handler/navigator_pop_handler.1_test.dart b/examples/api/test/widgets/navigator_pop_handler/navigator_pop_handler.1_test.dart
index a6ea0ac828..53b865a7ac 100644
--- a/examples/api/test/widgets/navigator_pop_handler/navigator_pop_handler.1_test.dart
+++ b/examples/api/test/widgets/navigator_pop_handler/navigator_pop_handler.1_test.dart
@@ -2,37 +2,131 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
 import 'package:flutter_api_samples/widgets/navigator_pop_handler/navigator_pop_handler.1.dart' as example;
 import 'package:flutter_test/flutter_test.dart';
 
 import '../navigator_utils.dart';
 
 void main() {
+  bool? lastFrameworkHandlesBack;
+  setUp(() async {
+    lastFrameworkHandlesBack = null;
+    TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
+      .setMockMethodCallHandler(SystemChannels.platform, (MethodCall methodCall) async {
+        if (methodCall.method == 'SystemNavigator.setFrameworkHandlesBack') {
+          expect(methodCall.arguments, isA<bool>());
+          lastFrameworkHandlesBack = methodCall.arguments as bool;
+        }
+        return;
+      });
+    await TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
+        .handlePlatformMessage(
+          'flutter/lifecycle',
+          const StringCodec().encodeMessage(AppLifecycleState.resumed.toString()),
+          (ByteData? data) {},
+        );
+  });
+
+  tearDown(() {
+    TestDefaultBinaryMessengerBinding.instance.defaultBinaryMessenger
+        .setMockMethodCallHandler(SystemChannels.platform, null);
+  });
+
   testWidgets("System back gesture operates on current tab's nested Navigator", (WidgetTester tester) async {
     await tester.pumpWidget(
       const example.NavigatorPopHandlerApp(),
     );
 
     expect(find.text('Bottom nav - tab Home Tab - route _TabPage.home'), findsOneWidget);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isFalse);
+    }
 
     // Go to the next route in this tab.
     await tester.tap(find.text('Go to another route in this nested Navigator'));
     await tester.pumpAndSettle();
     expect(find.text('Bottom nav - tab Home Tab - route _TabPage.one'), findsOneWidget);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isTrue);
+    }
 
     // Go to another tab.
     await tester.tap(find.text('Go to One'));
     await tester.pumpAndSettle();
     expect(find.text('Bottom nav - tab Tab One - route _TabPage.home'), findsOneWidget);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isFalse);
+    }
 
     // Return to the home tab. The navigation state is preserved.
     await tester.tap(find.text('Go to Home'));
     await tester.pumpAndSettle();
     expect(find.text('Bottom nav - tab Home Tab - route _TabPage.one'), findsOneWidget);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isTrue);
+    }
 
     // A back pops the navigation stack of the current tab's nested Navigator.
     await simulateSystemBack();
     await tester.pumpAndSettle();
     expect(find.text('Bottom nav - tab Home Tab - route _TabPage.home'), findsOneWidget);
+
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isFalse);
+    }
+  });
+
+  testWidgets('restoring the app preserves the navigation stack', (WidgetTester tester) async {
+    await tester.pumpWidget(
+      const example.NavigatorPopHandlerApp(),
+    );
+
+    expect(find.text('Bottom nav - tab Home Tab - route _TabPage.home'), findsOneWidget);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isFalse);
+    }
+
+    // Go to the next route in this tab.
+    await tester.tap(find.text('Go to another route in this nested Navigator'));
+    await tester.pumpAndSettle();
+    expect(find.text('Bottom nav - tab Home Tab - route _TabPage.one'), findsOneWidget);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isTrue);
+    }
+
+    // Go to another tab.
+    await tester.tap(find.text('Go to One'));
+    await tester.pumpAndSettle();
+    expect(find.text('Bottom nav - tab Tab One - route _TabPage.home'), findsOneWidget);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isFalse);
+    }
+
+    await tester.restartAndRestore();
+
+    expect(find.text('Bottom nav - tab Tab One - route _TabPage.home'), findsOneWidget);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isFalse);
+    }
+
+    // Return to the home tab. The navigation state is preserved.
+    await tester.tap(find.text('Go to Home'));
+    await tester.pumpAndSettle();
+    expect(find.text('Bottom nav - tab Home Tab - route _TabPage.one'), findsOneWidget);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isTrue);
+    }
+
+    // A back pops the navigation stack of the current tab's nested Navigator.
+    await simulateSystemBack();
+    await tester.pumpAndSettle();
+    expect(find.text('Bottom nav - tab Home Tab - route _TabPage.home'), findsOneWidget);
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      expect(lastFrameworkHandlesBack, isFalse);
+    }
   });
 }