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flutter-examples/using_theme/lib/main.dart
Nishant Srivastava 5c53498119 refactor: standardize Dart and Android config across all 54 apps
- Bump all apps to sdk >=3.0.0 <4.0.0 and add flutter_lints + a shared
  analysis_options.yaml to every app (flutter analyze is now green repo-wide)
- Fix real compile errors in firebase_google_authentication and image_editor,
  plus deprecated APIs (Matrix4, SvgPicture.color, textScaleFactor),
  missing async 'mounted' guards, and misc lints via dart fix + manual fixes
- Align pubspec 'name' with each folder and Android namespace/applicationId
  with the documented github.nisrulz.* convention
- Convert bmi_calculator from a legacy Flutter module to a standard app
  with a proper android/ scaffold; fix missing android:exported in launcher
  manifests across 22 apps so all Android builds pass
- Untrack generated build files (GeneratedPluginRegistrant,
  .flutter-plugins-dependencies) and ignore them
2026-08-17 17:26:39 +02:00

60 lines
1.6 KiB
Dart

import 'package:flutter/material.dart';
void main() {
runApp(MaterialApp(
debugShowCheckedModeBanner: false,
home: MyHome(),
// Set the theme's primary color, accent color,
theme: ThemeData(
primarySwatch: Colors.green,
colorScheme: ColorScheme.fromSwatch(primarySwatch: Colors.green)
.copyWith(secondary: Colors.lightGreenAccent),
// Set background color
scaffoldBackgroundColor: Colors.black12,
),
));
}
class MyHome extends StatelessWidget {
const MyHome({super.key});
@override
Widget build(BuildContext context) {
return Scaffold(
// AppBar
appBar: AppBar(
// AppBar Title
title: Text("Using Theme"),
),
body: Container(
// Another way to set the background color
decoration: BoxDecoration(color: Colors.black87),
child: Center(
child: Container(
// use the theme accent color as background color for this widget
color: Theme.of(context).colorScheme.secondary,
child: Text(
'Hello World!',
// Set text style as per theme
style: Theme.of(context).textTheme.titleMedium,
),
),
),
),
floatingActionButton: Theme(
// override the accent color of theme for this widget only
data: Theme.of(context).copyWith(
colorScheme: Theme.of(context)
.colorScheme
.copyWith(secondary: Colors.pinkAccent),
),
child: FloatingActionButton(
onPressed: null,
child: Icon(Icons.add),
),
),
);
}
}