import 'package:flutter/material.dart';

class Mainwindow extends StatefulWidget {
  const Mainwindow({super.key});

  @override
  State<StatefulWidget> createState() {
    return Mainstate();
  }

}

class Mainstate extends State<Mainwindow>{
  int counter = 0;
  @override
  Widget build(BuildContext context) {
    return 
    Scaffold(
        floatingActionButton: FloatingActionButton(
          child: const Icon(Icons.add),
          onPressed: () {
            setState(() {
              counter++;
            });
          },
        ),
        appBar: AppBar(title: const Text('Számláló')),
        body:  Container(
          color: Colors.yellow,
          padding: const EdgeInsets.all(10),
          child: Center(child: Text(
            counter.toString(),
            style: const TextStyle(fontSize: 34)
            )))
      );
  }
}