在flutter中将内容插入sqflite数据库后，自动加载UI中的内容

import 'package:flutter/material.dart';
import 'package:sqflite/sqflite.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Sqflite Example')),
        body: MyHomePage(),
      ),
    );
  }
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  List<Map<String, dynamic>> _items = [];
  Database? _database;

  @override
  void initState() {
    super.initState();
    initDatabase();
  }

  Future<void> initDatabase() async {
    _database = await openDatabase(
      'my_database.db',
      version: 1,
      onCreate: _onCreate,
    );
    loadData();
  }

  Future<void> _onCreate(Database db, int version) async {
    await db.execute(
      'CREATE TABLE items(id INTEGER PRIMARY KEY, name TEXT)',
    );
  }

  Future<void> insertData() async {
    int id = await _database!.insert('items', {'name': 'New Item'});
    print('Inserted item with id: $id');
    loadData();
  }

  Future<void> loadData() async {
    List<Map<String, dynamic>> items = await _database!.query('items');
    setState(() {
      _items = items;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        ElevatedButton(
          onPressed: insertData,
          child: Text('Insert Data'),
        ),
        Expanded(
          child: ListView.builder(
            itemCount: _items.length,
            itemBuilder: (context, index) {
              return ListTile(
                title: Text(_items[index]['name']!),
              );
            },
          ),
        ),
      ],
    );
  }
}