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import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
class CounterWidget extends StatefulWidget {
@override
_CounterWidgetState createState() => _CounterWidgetState();
}
class _CounterWidgetState extends State<CounterWidget> {
int _counter;
@override
void initState() {
super.initState();
_counter = 0;
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(_counter.toString()),
RaisedButton(
onPressed: () {
setState(() {
_counter++;
});
},
child: Text('Press me'),
)
]),
),
);
}
}
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