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;
  String? ukuran;
  String nama_item = 'Kaos Hitam';
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Colors.orange,
        centerTitle: true,
        title: Text(
          'My Shop',
          style: TextStyle(
            color: Colors.white,
          ),
        ),
      ),
      body: Container(
        decoration: BoxDecoration(
          image: DecorationImage(
            image: AssetImage('assets/image/3132.jpg'),
            fit: BoxFit.fill,
          ),
        ),
        child: Center(
          child: Column(
            children: [
              Image.asset(
                'assets/image/item.jpg',
                height: 200,
                width: 200,
              ),
              Text(
                '$nama_item',
                style: TextStyle(
                  color: Colors.black,
                  fontWeight: FontWeight.bold,
                  fontSize: 20,
                ),
              ),
              SizedBox(
                height: 20,
              ),
              Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  ElevatedButton(
                    style: ElevatedButton.styleFrom(
                      backgroundColor: Colors.red,
                    ),
                    onPressed: () {
                      setState(() {
                        jumlah_item++;
                      });
                    },
                    child: Text('+'),
                  ),
                  SizedBox(
                    width: 30,
                  ),
                  Text(
                    '$jumlah_item',
                    style: TextStyle(
                      fontWeight: FontWeight.bold,
                      fontSize: 20,
                    ),
                  ),
                  SizedBox(
                    width: 30,
                  ),
                  ElevatedButton(
                    style: ElevatedButton.styleFrom(
                      backgroundColor: Colors.red,
                    ),
                    onPressed: jumlah_item == 0
                        ? null
                        : () {
                            setState(() {
                              jumlah_item--;
                            });
                          },
                    child: Text('-'),
                  ),
                ],
              ),
              Row(
                children: [
                  Expanded(
                    child: RadioListTile(
                      title: Text('S'),
                      value: 'S',
                      groupValue: ukuran,
                      onChanged: (value) {
                        setState(() {
                          ukuran = value;
                        });
                      },
                    ),
                  ),
                  Expanded(
                    child: RadioListTile(
                      title: Text('M'),
                      value: 'M',
                      groupValue: ukuran,
                      onChanged: (value) {
                        setState(() {
                          ukuran = value;
                        });
                      },
                    ),
                  ),
                  Expanded(
                    child: RadioListTile(
                      title: Text('L'),
                      value: 'L',
                      groupValue: ukuran,
                      onChanged: (value) {
                        setState(() {
                          ukuran = value;
                        });
                      },
                    ),
                  ),
                  Expanded(
                    child: RadioListTile(
                      title: Text('XL'),
                      value: 'XL',
                      groupValue: ukuran,
                      onChanged: (value) {
                        setState(() {
                          ukuran = value;
                        });
                      },
                    ),
                  ),
                ],
              ),
            ],
          ),
        ),
      ),
      floatingActionButton: ElevatedButton(
        style: ElevatedButton.styleFrom(
          backgroundColor: Colors.orange,
        ),
        onPressed: jumlah_item == 0 || ukuran == null
            ? null
            : () {
                showDialog(
                  context: context,
                  builder: (context) => AlertDialog(
                    title: Column(
                      children: [
                        Icon(
                          Icons.check_circle,
                          color: Colors.green,
                        ),
                        Text(
                          'Pesanan Diterima',
                          style: TextStyle(
                            color: Colors.green,
                            fontSize: 20,
                            fontWeight: FontWeight.bold,
                            fontStyle: FontStyle.italic,
                          ),
                        ),
                      ],
                    ),
                    content: Text(
                        'Pesanan anda $nama_item sebanyak $jumlah_item dengan ukuran $ukuran akan diproses'),
                    actions: [
                      TextButton(
                        onPressed: () {
                          Navigator.of(context).pop();
                          setState(() {
                            jumlah_item = 0;
                            ukuran = null;
                          });
                        },
                        child: Text(
                          'Oke',
                          style: TextStyle(
                            color: Colors.green,
                          ),
                        ),
                      ),
                      TextButton(
                        onPressed: () {
                          Navigator.of(context).pop();
                        },
                        child: Text(
                          'Batal',
                          style: TextStyle(
                            color: Colors.red,
                          ),
                        ),
                      ),
                    ],
                  ),
                );
              },
        child: Icon(
          Icons.shopping_cart,
          size: 40,
        ),
      ),
    );
  }
}