proper theming

lib/main.dart

@@ -1,43 +1,36 @@
+import 'package:dynamic_color/dynamic_color.dart';
 import 'package:flutter/material.dart';
 
 void main() {
-  runApp(const MyApp());
+  runApp(const App());
 }
 
-class MyApp extends StatelessWidget {
-  const MyApp({super.key});
+class App extends StatelessWidget {
+  const App({super.key});
 
-  // This widget is the root of your application.
   @override
   Widget build(BuildContext context) {
-    return MaterialApp(
-      title: 'Flutter Demo',
-      theme: ThemeData(
-        // This is the theme of your application.
-        //
-        // TRY THIS: Try running your application with "flutter run". You'll see
-        // the application has a purple toolbar. Then, without quitting the app,
-        // try changing the seedColor in the colorScheme below to Colors.green
-        // and then invoke "hot reload" (save your changes or press the "hot
-        // reload" button in a Flutter-supported IDE, or press "r" if you used
-        // the command line to start the app).
-        //
-        // Notice that the counter didn't reset back to zero; the application
-        // state is not lost during the reload. To reset the state, use hot
-        // restart instead.
-        //
-        // This works for code too, not just values: Most code changes can be
-        // tested with just a hot reload.
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
-        useMaterial3: true,
-      ),
-      home: const MyHomePage(title: 'Flutter Demo Home Page'),
+    return DynamicColorBuilder(
+      builder: ((lightDynamic, darkDynamic) => MaterialApp(
+          title: "HRT",
+          theme: ThemeData(
+            brightness: Brightness.light,
+            useMaterial3: true,
+            colorScheme: lightDynamic,
+          ),
+          darkTheme: ThemeData(
+            brightness: Brightness.dark,
+            useMaterial3: true,
+            colorScheme: darkDynamic,
+          ),
+          themeMode: ThemeMode.system,
+          home: const HomePage(title: "HRT"))),
     );
   }
 }
 
-class MyHomePage extends StatefulWidget {
-  const MyHomePage({super.key, required this.title});
+class HomePage extends StatefulWidget {
+  const HomePage({super.key, required this.title});
 
   // This widget is the home page of your application. It is stateful, meaning
   // that it has a State object (defined below) that contains fields that affect
@@ -51,10 +44,10 @@ class MyHomePage extends StatefulWidget {
   final String title;
 
   @override
-  State<MyHomePage> createState() => _MyHomePageState();
+  State<HomePage> createState() => _HomePageState();
 }
 
-class _MyHomePageState extends State<MyHomePage> {
+class _HomePageState extends State<HomePage> {
   int _counter = 0;
 
   void _incrementCounter() {

pubspec.lock

@@ -49,6 +49,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.6"
+  dynamic_color:
+    dependency: "direct main"
+    description:
+      name: dynamic_color
+      sha256: "96bff3df72e3d428bda2b874c7a521e8c86f592cae626ea594922fcc8d166e0c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.6.7"
   fake_async:
     dependency: transitive
     description:
@@ -186,3 +194,4 @@ packages:
     version: "0.1.4-beta"
 sdks:
   dart: ">=3.2.0-134.1.beta <4.0.0"
+  flutter: ">=3.4.0-17.0.pre"

pubspec.yaml

@@ -35,6 +35,7 @@ dependencies:
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^1.0.2
+  dynamic_color: ^1.6.7
 
 dev_dependencies:
   flutter_test:

test/widget_test.dart

@@ -13,7 +13,7 @@ import 'package:hrt/main.dart';
 void main() {
   testWidgets('Counter increments smoke test', (WidgetTester tester) async {
     // Build our app and trigger a frame.
-    await tester.pumpWidget(const MyApp());
+    await tester.pumpWidget(const App());
 
     // Verify that our counter starts at 0.
     expect(find.text('0'), findsOneWidget);