Remove redundant useMaterial3: true (#163376)

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This PR removes redundant useMaterial3: true as described in
https://github.com/flutter/flutter/issues/162818

*List which issues are fixed by this PR. You must list at least one
issue. An issue is not required if the PR fixes something trivial like a
typo.*

- https://github.com/flutter/flutter/issues/162818

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above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
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Fixes] where supported.
- [ ] All existing and new tests are passing.

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---------

Co-authored-by: Qun Cheng <36861262+QuncCccccc@users.noreply.github.com>

examples/api/lib/material/action_buttons/action_icon_theme.0.dart

@@ -38,7 +38,6 @@ class ActionIconThemeExampleApp extends StatelessWidget {
     return MaterialApp(
       debugShowCheckedModeBanner: false,
       theme: ThemeData(
-        useMaterial3: true,
         actionIconTheme: ActionIconThemeData(
           backButtonIconBuilder: (BuildContext context) {
             return const Icon(Icons.arrow_back_ios_new_rounded);

examples/api/lib/material/action_chip/action_chip.0.dart

@@ -14,7 +14,7 @@ class ChipApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: const ActionChipExample(),
     );
   }

examples/api/lib/material/animated_icon/animated_icon.0.dart

@@ -16,7 +16,7 @@ class AnimatedIconApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: const Scaffold(body: AnimatedIconExample()),
     );
   }

examples/api/lib/material/animated_icon/animated_icons_data.0.dart

@@ -33,7 +33,7 @@ class AnimatedIconApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: const Scaffold(body: AnimatedIconExample()),
     );
   }

examples/api/lib/material/app_bar/app_bar.1.dart

@@ -16,7 +16,7 @@ class AppBarApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: const AppBarExample(),
     );
   }

examples/api/lib/material/app_bar/app_bar.3.dart

@@ -16,7 +16,7 @@ class AppBarApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: const AppBarExample(),
     );
   }

examples/api/lib/material/app_bar/sliver_app_bar.2.dart

@@ -16,7 +16,7 @@ class AppBarMediumApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true, colorSchemeSeed: const Color(0xff6750A4)),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750A4)),
       home: Material(
         child: CustomScrollView(
           slivers: <Widget>[

examples/api/lib/material/app_bar/sliver_app_bar.3.dart

@@ -16,7 +16,7 @@ class AppBarLargeApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true, colorSchemeSeed: const Color(0xff6750A4)),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750A4)),
       home: Material(
         child: CustomScrollView(
           slivers: <Widget>[

examples/api/lib/material/bottom_app_bar/bottom_app_bar.2.dart

@@ -101,7 +101,6 @@ class _BottomAppBarDemoState extends State<BottomAppBarDemo> {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('Bottom App Bar Demo')),
         body: Column(

examples/api/lib/material/bottom_sheet/show_modal_bottom_sheet.1.dart

@@ -14,7 +14,7 @@ class BottomSheetApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: Scaffold(
         appBar: AppBar(title: const Text('Bottom Sheet Sample')),
         body: const BottomSheetExample(),

examples/api/lib/material/button_style/button_style.0.dart

@@ -16,7 +16,7 @@ class ButtonApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       title: 'Button Types',
       home: const Scaffold(body: ButtonTypesExample()),
     );

examples/api/lib/material/checkbox/checkbox.1.dart

@@ -14,7 +14,7 @@ class CheckboxExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true, colorSchemeSeed: const Color(0xff6750a4)),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       title: 'Checkbox Sample',
       home: Scaffold(
         appBar: AppBar(title: const Text('Checkbox Sample')),

examples/api/lib/material/checkbox_list_tile/checkbox_list_tile.0.dart

@@ -14,7 +14,7 @@ class CheckboxListTileApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const CheckboxListTileExample());
+    return const MaterialApp(home: CheckboxListTileExample());
   }
 }
 

examples/api/lib/material/checkbox_list_tile/checkbox_list_tile.1.dart

@@ -13,7 +13,7 @@ class CheckboxListTileApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const CheckboxListTileExample());
+    return const MaterialApp(home: CheckboxListTileExample());
   }
 }
 

examples/api/lib/material/checkbox_list_tile/custom_labeled_checkbox.0.dart

@@ -15,7 +15,7 @@ class LabeledCheckboxApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const LabeledCheckboxExample());
+    return const MaterialApp(home: LabeledCheckboxExample());
   }
 }
 

examples/api/lib/material/checkbox_list_tile/custom_labeled_checkbox.1.dart

@@ -13,7 +13,7 @@ class LabeledCheckboxApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const LabeledCheckboxExample());
+    return const MaterialApp(home: LabeledCheckboxExample());
   }
 }
 

examples/api/lib/material/choice_chip/choice_chip.0.dart

@@ -14,7 +14,7 @@ class ChipApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: const ActionChoiceExample(),
     );
   }

examples/api/lib/material/color_scheme/dynamic_content_color.0.dart

@@ -96,7 +96,7 @@ class _DynamicColorExampleState extends State<DynamicColorExample> {
     }
 
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true, colorScheme: colorScheme),
+      theme: ThemeData(colorScheme: colorScheme),
       debugShowCheckedModeBanner: false,
       home: Builder(
         builder:

examples/api/lib/material/dialog/adaptive_alert_dialog.0.dart

@@ -16,7 +16,7 @@ class AdaptiveAlertDialogApp extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       // Try this: set the platform to TargetPlatform.android and see the difference
-      theme: ThemeData(platform: TargetPlatform.iOS, useMaterial3: true),
+      theme: ThemeData(platform: TargetPlatform.iOS),
       home: Scaffold(
         appBar: AppBar(title: const Text('AlertDialog Sample')),
         body: const Center(child: AdaptiveDialogExample()),

examples/api/lib/material/dialog/alert_dialog.1.dart

@@ -14,7 +14,7 @@ class AlertDialogExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: Scaffold(
         appBar: AppBar(title: const Text('AlertDialog Sample')),
         body: const Center(child: DialogExample()),

examples/api/lib/material/dialog/show_dialog.1.dart

@@ -14,7 +14,7 @@ class ShowDialogExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: const DialogExample(),
     );
   }

examples/api/lib/material/divider/divider.1.dart

@@ -14,7 +14,7 @@ class DividerExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: Scaffold(
         appBar: AppBar(title: const Text('Divider Sample')),
         body: const DividerExample(),

examples/api/lib/material/divider/vertical_divider.1.dart

@@ -14,7 +14,7 @@ class VerticalDividerExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: Scaffold(
         appBar: AppBar(title: const Text('Divider Sample')),
         body: const DividerExample(),

examples/api/lib/material/drawer/drawer.0.dart

@@ -13,7 +13,7 @@ class DrawerApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const DrawerExample());
+    return const MaterialApp(home: DrawerExample());
   }
 }
 

examples/api/lib/material/dropdown_menu/dropdown_menu.0.dart

@@ -77,7 +77,7 @@ class _DropdownMenuExampleState extends State<DropdownMenuExample> {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true, colorSchemeSeed: Colors.green),
+      theme: ThemeData(colorSchemeSeed: Colors.green),
       home: Scaffold(
         body: SafeArea(
           child: Column(

examples/api/lib/material/dropdown_menu/dropdown_menu.1.dart

@@ -17,7 +17,6 @@ class DropdownMenuApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('DropdownMenu Sample')),
         body: const Center(child: DropdownMenuExample()),

examples/api/lib/material/expansion_tile/expansion_tile.0.dart

@@ -14,7 +14,6 @@ class ExpansionTileApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('ExpansionTile Sample')),
         body: const ExpansionTileExample(),

examples/api/lib/material/expansion_tile/expansion_tile.1.dart

@@ -23,7 +23,6 @@ class _ExpansionTileControllerAppState extends State<ExpansionTileControllerApp>
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('ExpansionTileController Sample')),
         body: Column(

examples/api/lib/material/filled_button/filled_button.0.dart

@@ -16,7 +16,7 @@ class FilledButtonApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: Scaffold(
         appBar: AppBar(title: const Text('FilledButton Sample')),
         body: Center(

examples/api/lib/material/filter_chip/filter_chip.0.dart

@@ -16,7 +16,6 @@ class ChipApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('FilterChip Sample')),
         body: const FilterChipExample(),

examples/api/lib/material/floating_action_button/floating_action_button.0.dart

@@ -15,10 +15,7 @@ class FloatingActionButtonExampleApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
-      home: const FloatingActionButtonExample(),
-    );
+    return const MaterialApp(home: FloatingActionButtonExample());
   }
 }
 

examples/api/lib/material/floating_action_button/floating_action_button.1.dart

@@ -13,10 +13,7 @@ class FloatingActionButtonExampleApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
-      home: const FloatingActionButtonExample(),
-    );
+    return const MaterialApp(home: FloatingActionButtonExample());
   }
 }
 

examples/api/lib/material/floating_action_button/floating_action_button.2.dart

@@ -13,10 +13,7 @@ class FloatingActionButtonExampleApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
-      home: const FloatingActionButtonExample(),
-    );
+    return const MaterialApp(home: FloatingActionButtonExample());
   }
 }
 

examples/api/lib/material/icon_button/icon_button.2.dart

@@ -16,7 +16,7 @@ class IconButtonApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       title: 'Icon Button Types',
       home: const Scaffold(body: ButtonTypesExample()),
     );

examples/api/lib/material/icon_button/icon_button.3.dart

@@ -16,7 +16,7 @@ class IconButtonToggleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       title: 'Icon Button Types',
       home: const Scaffold(body: DemoIconToggleButtons()),
     );

examples/api/lib/material/input_chip/input_chip.0.dart

@@ -14,7 +14,7 @@ class ChipApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: const InputChipExample(),
     );
   }

examples/api/lib/material/input_chip/input_chip.1.dart

@@ -25,10 +25,7 @@ class EditableChipFieldApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
-      home: const EditableChipFieldExample(),
-    );
+    return const MaterialApp(home: EditableChipFieldExample());
   }
 }
 

examples/api/lib/material/input_decorator/input_decoration.0.dart

@@ -14,7 +14,6 @@ class InputDecorationExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('InputDecoration Sample')),
         body: const InputDecorationExample(),

examples/api/lib/material/input_decorator/input_decoration.1.dart

@@ -14,7 +14,6 @@ class InputDecorationExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('InputDecoration Sample')),
         body: const InputDecorationExample(),

examples/api/lib/material/input_decorator/input_decoration.2.dart

@@ -14,7 +14,6 @@ class InputDecorationExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('InputDecoration Sample')),
         body: const InputDecorationExample(),

examples/api/lib/material/input_decorator/input_decoration.3.dart

@@ -14,7 +14,6 @@ class InputDecorationExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('InputDecoration Sample')),
         body: const InputDecorationExample(),

examples/api/lib/material/input_decorator/input_decoration.floating_label_style_error.0.dart

@@ -14,7 +14,6 @@ class FloatingLabelStyleErrorExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('InputDecorator Sample')),
         body: const Center(child: InputDecoratorExample()),

examples/api/lib/material/input_decorator/input_decoration.helper.0.dart

@@ -14,7 +14,6 @@ class HelperExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('InputDecoration.helper Sample')),
         body: const HelperExample(),

examples/api/lib/material/input_decorator/input_decoration.label.0.dart

@@ -14,7 +14,6 @@ class LabelExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('InputDecoration.label Sample')),
         body: const LabelExample(),

examples/api/lib/material/input_decorator/input_decoration.label_style_error.0.dart

@@ -14,7 +14,6 @@ class LabelStyleErrorExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('InputDecorator Sample')),
         body: const Center(child: InputDecoratorExample()),

examples/api/lib/material/input_decorator/input_decoration.prefix_icon.0.dart

@@ -13,10 +13,7 @@ class PrefixIconExampleApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
-      home: const Scaffold(body: InputDecoratorExample()),
-    );
+    return const MaterialApp(home: Scaffold(body: InputDecoratorExample()));
   }
 }
 

examples/api/lib/material/input_decorator/input_decoration.prefix_icon_constraints.0.dart

@@ -14,7 +14,6 @@ class PrefixIconConstraintsExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('InputDecoration Sample')),
         body: const PrefixIconConstraintsExample(),

examples/api/lib/material/input_decorator/input_decoration.suffix_icon.0.dart

@@ -13,10 +13,7 @@ class SuffixIconExampleApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
-      home: const Scaffold(body: InputDecoratorExample()),
-    );
+    return const MaterialApp(home: Scaffold(body: InputDecoratorExample()));
   }
 }
 

examples/api/lib/material/input_decorator/input_decoration.suffix_icon_constraints.0.dart

@@ -14,7 +14,6 @@ class SuffixIconConstraintsExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('InputDecoration Sample')),
         body: const SuffixIconConstraintsExample(),

examples/api/lib/material/input_decorator/input_decoration.widget_state.0.dart

@@ -14,7 +14,6 @@ class MaterialStateExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('InputDecoration Sample')),
         body: const MaterialStateExample(),

examples/api/lib/material/input_decorator/input_decoration.widget_state.1.dart

@@ -14,7 +14,6 @@ class MaterialStateExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('InputDecoration Sample')),
         body: const MaterialStateExample(),

examples/api/lib/material/list_tile/custom_list_item.1.dart

@@ -13,7 +13,7 @@ class CustomListItemApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const CustomListItemExample());
+    return const MaterialApp(home: CustomListItemExample());
   }
 }
 

examples/api/lib/material/list_tile/list_tile.0.dart

@@ -14,10 +14,7 @@ class ListTileApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(
-        listTileTheme: const ListTileThemeData(textColor: Colors.white),
-        useMaterial3: true,
-      ),
+      theme: ThemeData(listTileTheme: const ListTileThemeData(textColor: Colors.white)),
       home: const ListTileExample(),
     );
   }

examples/api/lib/material/list_tile/list_tile.1.dart

@@ -13,7 +13,7 @@ class ListTileApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const ListTileExample());
+    return const MaterialApp(home: ListTileExample());
   }
 }
 

examples/api/lib/material/list_tile/list_tile.2.dart

@@ -13,7 +13,7 @@ class ListTileApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const ListTileExample());
+    return const MaterialApp(home: ListTileExample());
   }
 }
 

examples/api/lib/material/list_tile/list_tile.3.dart

@@ -13,7 +13,7 @@ class ListTileApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const ListTileExample());
+    return const MaterialApp(home: ListTileExample());
   }
 }
 

examples/api/lib/material/list_tile/list_tile.4.dart

@@ -13,7 +13,7 @@ class ListTileApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const ListTileExample());
+    return const MaterialApp(home: ListTileExample());
   }
 }
 

examples/api/lib/material/list_tile/list_tile.selected.0.dart

@@ -13,7 +13,7 @@ class ListTileApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const ListTileExample());
+    return const MaterialApp(home: ListTileExample());
   }
 }
 

examples/api/lib/material/menu_anchor/menu_anchor.1.dart

@@ -253,9 +253,6 @@ class ContextMenuApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
-      home: const Scaffold(body: MyContextMenu(message: kMessage)),
-    );
+    return const MaterialApp(home: Scaffold(body: MyContextMenu(message: kMessage)));
   }
 }

examples/api/lib/material/menu_anchor/radio_menu_button.0.dart

@@ -112,9 +112,6 @@ class MenuApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
-      home: const Scaffold(body: SafeArea(child: MyRadioMenu())),
-    );
+    return const MaterialApp(home: Scaffold(body: SafeArea(child: MyRadioMenu())));
   }
 }

examples/api/lib/material/navigation_bar/navigation_bar.0.dart

@@ -13,7 +13,7 @@ class NavigationBarApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const NavigationExample());
+    return const MaterialApp(home: NavigationExample());
   }
 }
 

examples/api/lib/material/navigation_drawer/navigation_drawer.0.dart

@@ -32,11 +32,7 @@ class NavigationDrawerApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      debugShowCheckedModeBanner: false,
-      theme: ThemeData(useMaterial3: true),
-      home: const NavigationDrawerExample(),
-    );
+    return const MaterialApp(debugShowCheckedModeBanner: false, home: NavigationDrawerExample());
   }
 }
 

examples/api/lib/material/page_transitions_theme/page_transitions_theme.1.dart

@@ -15,7 +15,6 @@ class PageTransitionsThemeApp extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       theme: ThemeData(
-        useMaterial3: true,
         pageTransitionsTheme: const PageTransitionsTheme(
           builders: <TargetPlatform, PageTransitionsBuilder>{
             TargetPlatform.android: ZoomPageTransitionsBuilder(allowSnapshotting: false),

examples/api/lib/material/popup_menu/popup_menu.1.dart

@@ -17,7 +17,7 @@ class PopupMenuApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true, colorSchemeSeed: const Color(0xff6750a4)),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: const PopupMenuExample(),
     );
   }

examples/api/lib/material/progress_indicator/circular_progress_indicator.1.dart

@@ -14,7 +14,7 @@ class ProgressIndicatorExampleApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true, colorSchemeSeed: const Color(0xff6750a4)),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: const ProgressIndicatorExample(),
     );
   }

examples/api/lib/material/radio_list_tile/custom_labeled_radio.0.dart

@@ -16,7 +16,6 @@ class LabeledRadioApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('Custom Labeled Radio Sample')),
         body: const LabeledRadioExample(),

examples/api/lib/material/radio_list_tile/custom_labeled_radio.1.dart

@@ -14,7 +14,6 @@ class LabeledRadioApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('Custom Labeled Radio Sample')),
         body: const LabeledRadioExample(),

examples/api/lib/material/radio_list_tile/radio_list_tile.0.dart

@@ -14,7 +14,6 @@ class RadioListTileApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('RadioListTile Sample')),
         body: const RadioListTileExample(),

examples/api/lib/material/radio_list_tile/radio_list_tile.1.dart

@@ -13,7 +13,7 @@ class RadioListTileApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const RadioListTileExample());
+    return const MaterialApp(home: RadioListTileExample());
   }
 }
 

examples/api/lib/material/radio_list_tile/radio_list_tile.toggleable.0.dart

@@ -14,7 +14,6 @@ class RadioListTileApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('RadioListTile.toggleable Sample')),
         body: const RadioListTileExample(),

examples/api/lib/material/reorderable_list/reorderable_list_view.2.dart

@@ -16,7 +16,6 @@ class ReorderableApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('ReorderableListView Sample')),
         body: const ReorderableExample(),

examples/api/lib/material/search_anchor/search_anchor.0.dart

@@ -70,7 +70,7 @@ class _SearchBarAppState extends State<SearchBarApp> {
 
   @override
   Widget build(BuildContext context) {
-    final ThemeData themeData = ThemeData(useMaterial3: true, colorSchemeSeed: selectedColorSeed);
+    final ThemeData themeData = ThemeData(colorSchemeSeed: selectedColorSeed);
     final ColorScheme colors = themeData.colorScheme;
 
     return MaterialApp(

examples/api/lib/material/search_anchor/search_anchor.1.dart

@@ -21,7 +21,7 @@ class _PinnedSearchBarAppState extends State<PinnedSearchBarApp> {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true, colorSchemeSeed: const Color(0xff6750a4)),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: Scaffold(
         body: SafeArea(
           child: CustomScrollView(

examples/api/lib/material/search_anchor/search_anchor.2.dart

@@ -20,10 +20,7 @@ class _SearchBarAppState extends State<SearchBarApp> {
 
   @override
   Widget build(BuildContext context) {
-    final ThemeData themeData = ThemeData(useMaterial3: true);
-
     return MaterialApp(
-      theme: themeData,
       home: Scaffold(
         appBar: AppBar(title: const Text('Search Anchor Sample')),
         body: Column(

examples/api/lib/material/search_anchor/search_bar.0.dart

@@ -20,10 +20,7 @@ class _SearchBarAppState extends State<SearchBarApp> {
 
   @override
   Widget build(BuildContext context) {
-    final ThemeData themeData = ThemeData(
-      useMaterial3: true,
-      brightness: isDark ? Brightness.dark : Brightness.light,
-    );
+    final ThemeData themeData = ThemeData(brightness: isDark ? Brightness.dark : Brightness.light);
 
     return MaterialApp(
       theme: themeData,

examples/api/lib/material/segmented_button/segmented_button.0.dart

@@ -15,9 +15,8 @@ class SegmentedButtonApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
-      home: const Scaffold(
+    return const MaterialApp(
+      home: Scaffold(
         body: Center(
           child: Column(
             mainAxisAlignment: MainAxisAlignment.center,

examples/api/lib/material/selection_area/selection_area.1.dart

@@ -16,10 +16,7 @@ class SelectionAreaSelectionListenerExampleApp extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       title: 'Flutter Demo',
-      theme: ThemeData(
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
-        useMaterial3: true,
-      ),
+      theme: ThemeData(colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple)),
       home: const MyHomePage(title: 'Flutter Demo Home Page'),
     );
   }

examples/api/lib/material/selection_area/selection_area.2.dart

@@ -18,10 +18,7 @@ class SelectionAreaColorTextRedExampleApp extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       title: 'Flutter Demo',
-      theme: ThemeData(
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
-        useMaterial3: true,
-      ),
+      theme: ThemeData(colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple)),
       home: const MyHomePage(title: 'Flutter Demo Home Page'),
     );
   }

examples/api/lib/material/snack_bar/snack_bar.2.dart

@@ -15,7 +15,7 @@ class SnackBarExampleApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const SnackBarExample());
+    return const MaterialApp(home: SnackBarExample());
   }
 }
 

examples/api/lib/material/switch/switch.0.dart

@@ -14,7 +14,6 @@ class SwitchApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('Switch Sample')),
         body: const Center(child: SwitchExample()),

examples/api/lib/material/switch/switch.1.dart

@@ -14,7 +14,6 @@ class SwitchApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('Switch Sample')),
         body: const Center(child: SwitchExample()),

examples/api/lib/material/switch/switch.2.dart

@@ -14,7 +14,6 @@ class SwitchApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('Switch Sample')),
         body: const Center(child: SwitchExample()),

examples/api/lib/material/switch/switch.3.dart

@@ -15,7 +15,7 @@ class SwitchApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData.light(useMaterial3: true).copyWith(
+      theme: ThemeData(
         // Use the ambient CupertinoThemeData to style all widgets which would
         // otherwise use iOS defaults.
         cupertinoOverrideTheme: const CupertinoThemeData(applyThemeToAll: true),

examples/api/lib/material/switch_list_tile/custom_labeled_switch.0.dart

@@ -16,7 +16,6 @@ class LabeledSwitchApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('Custom Labeled Switch Sample')),
         body: const Center(child: LabeledSwitchExample()),

examples/api/lib/material/switch_list_tile/custom_labeled_switch.1.dart

@@ -14,7 +14,6 @@ class LabeledSwitchApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('Custom Labeled Switch Sample')),
         body: const Center(child: LabeledSwitchExample()),

examples/api/lib/material/switch_list_tile/switch_list_tile.0.dart

@@ -14,7 +14,6 @@ class SwitchListTileApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('SwitchListTile Sample')),
         body: const Center(child: SwitchListTileExample()),

examples/api/lib/material/switch_list_tile/switch_list_tile.1.dart

@@ -14,7 +14,6 @@ class SwitchListTileApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       home: Scaffold(
         appBar: AppBar(title: const Text('SwitchListTile Sample')),
         body: const SwitchListTileExample(),

examples/api/lib/material/tabs/tab_bar.0.dart

@@ -13,7 +13,7 @@ class TabBarApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const TabBarExample());
+    return const MaterialApp(home: TabBarExample());
   }
 }
 

examples/api/lib/material/tabs/tab_bar.1.dart

@@ -13,7 +13,7 @@ class TabBarApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const TabBarExample());
+    return const MaterialApp(home: TabBarExample());
   }
 }
 

examples/api/lib/material/tabs/tab_bar.2.dart

@@ -13,7 +13,7 @@ class TabBarApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const TabBarExample());
+    return const MaterialApp(home: TabBarExample());
   }
 }
 

examples/api/lib/material/text_field/text_field.2.dart

@@ -16,7 +16,7 @@ class TextFieldExamplesApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4), useMaterial3: true),
+      theme: ThemeData(colorSchemeSeed: const Color(0xff6750a4)),
       home: Scaffold(
         appBar: AppBar(title: const Text('TextField Examples')),
         body: const Column(

examples/api/lib/material/theme/theme_extension.1.dart

@@ -58,9 +58,9 @@ class _ThemeExtensionExampleAppState extends State<ThemeExtensionExampleApp> {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData.light().copyWith(
-        extensions: <ThemeExtension<dynamic>>[
-          const MyColors(brandColor: Color(0xFF1E88E5), danger: Color(0xFFE53935)),
+      theme: ThemeData(
+        extensions: const <ThemeExtension<dynamic>>[
+          MyColors(brandColor: Color(0xFF1E88E5), danger: Color(0xFFE53935)),
         ],
       ),
       darkTheme: ThemeData.dark().copyWith(

examples/api/lib/material/toggle_buttons/toggle_buttons.0.dart

@@ -19,10 +19,7 @@ class ToggleButtonsExampleApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
-      home: const ToggleButtonsSample(title: 'ToggleButtons Sample'),
-    );
+    return const MaterialApp(home: ToggleButtonsSample(title: 'ToggleButtons Sample'));
   }
 }
 

examples/api/lib/material/toggle_buttons/toggle_buttons.1.dart

@@ -14,10 +14,7 @@ class ToggleButtonsApp extends StatelessWidget {
   const ToggleButtonsApp({super.key});
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
-      home: const Scaffold(body: ToggleButtonsExample()),
-    );
+    return const MaterialApp(home: Scaffold(body: ToggleButtonsExample()));
   }
 }
 

examples/api/lib/painting/linear_border/linear_border.0.dart

@@ -15,9 +15,8 @@ class ExampleApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      theme: ThemeData.light(useMaterial3: true),
-      home: const Directionality(
+    return const MaterialApp(
+      home: Directionality(
         // TRY THIS: Switch to TextDirection.rtl to see how the borders change.
         textDirection: TextDirection.ltr,
         child: Home(),

examples/api/lib/services/system_chrome/system_chrome.set_system_u_i_overlay_style.0.dart

@@ -16,10 +16,7 @@ class SystemOverlayStyleApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      theme: ThemeData(useMaterial3: true, brightness: Brightness.light),
-      home: const SystemOverlayStyleExample(),
-    );
+    return const MaterialApp(home: SystemOverlayStyleExample());
   }
 }
 

examples/api/lib/services/system_chrome/system_chrome.set_system_u_i_overlay_style.1.dart

@@ -16,10 +16,7 @@ class SystemOverlayStyleApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      theme: ThemeData(useMaterial3: true, brightness: Brightness.light),
-      home: const SystemOverlayStyleExample(),
-    );
+    return const MaterialApp(home: SystemOverlayStyleExample());
   }
 }
 

examples/api/lib/widgets/implicit_animations/animated_slide.0.dart

@@ -13,7 +13,7 @@ class AnimatedSlideApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(theme: ThemeData(useMaterial3: true), home: const AnimatedSlideExample());
+    return const MaterialApp(home: AnimatedSlideExample());
   }
 }
 

examples/api/lib/widgets/raw_menu_anchor/raw_menu_anchor.0.dart

@@ -168,7 +168,6 @@ class RawMenuAnchorApp extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       theme: ThemeData.from(
-        useMaterial3: true,
         colorScheme: ColorScheme.fromSeed(
           seedColor: Colors.blue,
           dynamicSchemeVariant: DynamicSchemeVariant.vibrant,

examples/api/lib/widgets/scroll_notification_observer/scroll_notification_observer.0.dart

@@ -14,7 +14,6 @@ class ScrollNotificationObserverApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      theme: ThemeData(useMaterial3: true),
       // The Scaffold widget contains a [ScrollNotificationObserver].
       // This is used by [AppBar] for its scrolled under behavior.
       //