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@triyono777
Created April 12, 2022 04:36
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import 'package:flutter/material.dart';
class CounterScreen extends StatefulWidget {
const CounterScreen({Key? key}) : super(key: key);
@override
State<CounterScreen> createState() => _CounterScreenState();
}
class _CounterScreenState extends State<CounterScreen> {
int hitungan = 0;
_hitunganTambah() {
setState(() {
hitungan++;
});
}
_hitunganKurang() {
setState(() {
hitungan--;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Counter Screen'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text('Anda sudah klik $hitungan'),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
ElevatedButton(
onPressed: () {
_hitunganKurang();
},
child: Text('Pengurangan'),
),
SizedBox(
width: 20,
),
ElevatedButton(
onPressed: () {
_hitunganTambah();
},
child: Text('Penambahan'),
),
],
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: () {
_hitunganTambah();
},
child: Icon(Icons.add),
),
);
}
}
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