Untitled

import 'package:flutter/material.dart';

class MyShop extends StatefulWidget {
  const MyShop({Key? key}) : super(key: key);

  @override
  State<MyShop> createState() => _MyShopState();
}

class _MyShopState extends State<MyShop> {
  int jumlah_item = 0;
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Colors.orange,
        centerTitle: true,
        title: Text(
          'My Shop',
          style: TextStyle(
            color: Colors.white,
          ),
        ),
      ),
      body: Center(
        child: Column(
          children: [
            Image.asset(
              'assets/image/item.jpg',
              height: 200,
              width: 200,
            ),
            Text(
              'Kaos Polos',
              style: TextStyle(
                color: Colors.black,
                fontWeight: FontWeight.bold,
                fontSize: 20,
              ),
            ),
            SizedBox(
              height: 20,
            ),
            Row(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                ElevatedButton(
                  onPressed: () {
                    setState(() {
                      jumlah_item++;
                    });
                  },
                  child: Text('+'),
                ),
                SizedBox(
                  width: 30,
                ),
                Text(
                  '$jumlah_item',
                  style: TextStyle(
                    fontWeight: FontWeight.bold,
                    fontSize: 20,
                  ),
                ),
                SizedBox(
                  width: 30,
                ),
                ElevatedButton(
                  onPressed: () {
                    setState(() {
                      jumlah_item--;
                    });
                  },
                  child: Text('-'),
                ),
              ],
            )
          ],
        ),
      ),
      floatingActionButton: ElevatedButton(
        onPressed: () {},
        child: Icon(
          Icons.shopping_cart,
          size: 40,
        ),
      ),
    );
  }
}