queuing_system/lib/main.dart

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

import 'core/base/app_scaffold_widget.dart';
import 'core/base/project_view_model.dart';
import 'core/config/size_config.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return LayoutBuilder(
      builder: (context, constraints) {
        return OrientationBuilder(builder: (context, orientation) {
          SizeConfig().init(constraints, orientation);
          return MultiProvider(
            providers: [

              ChangeNotifierProvider<ProjectViewModel>(
                create: (context) => ProjectViewModel(),
              ),
            ],
            child: Consumer<ProjectViewModel>(
                builder: (context, projectProvider, child) => MaterialApp(
                  showSemanticsDebugger: false,
                  title: 'Doctors App',
                  theme: ThemeData(
                    primarySwatch: Colors.grey,
                    primaryColor: Colors.grey,
                    fontFamily: 'Poppins',
                    dividerColor: Colors.grey[350],
                    backgroundColor: Color.fromRGBO(255, 255, 255, 1),
                  ),
                  home:MyHomePage() ,
                  debugShowCheckedModeBanner: false,
                )),
          );
        });
      },
    );
  }
}

class MyHomePage extends StatefulWidget {

  // 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
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

   String title ="MyHomePage";

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      // This call to setState tells the Flutter framework that something has
      // changed in this State, which causes it to rerun the build method below
      // so that the display can reflect the updated values. If we changed
      // _counter without calling setState(), then the build method would not be
      // called again, and so nothing would appear to happen.
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return AppScaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(

        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headline4,
            ),
          ],
        ),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}