Mengenal Standar Kompetensi Sertifikasi BNSP untuk Junior Mobile Programmer

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Notifikasi Belanja',
      home: ShoppingListApp(),
    );
  }
}

class ShoppingListApp extends StatefulWidget {
  @override
  _ShoppingListAppState createState() => _ShoppingListAppState();
}

class _ShoppingListAppState extends State<ShoppingListApp> {
  final List<String> _shoppingList = [];
  final TextEditingController _controller = TextEditingController();

  void _addItem() {
    if (_controller.text.isNotEmpty) {
      setState(() {
        _shoppingList.add(_controller.text);
        _controller.clear();
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Daftar Belanja'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(8.0),
        child: Column(
          children: [
            TextField(
              controller: _controller,
              decoration: InputDecoration(labelText: 'Masukkan Barang'),
            ),
            ElevatedButton(
              onPressed: _addItem,
              child: Text('Tambah Barang'),
            ),
            Expanded(
              child: ListView.builder(
                itemCount: _shoppingList.length,
                itemBuilder: (context, index) {
                  return ListTile(
                    title: Text(_shoppingList[index]),
                  );
                },
              ),
            ),
          ],
        ),
      ),
    );
  }
}