jual_beli_tokody 是一个 Flutter 插件，用于管理交易（如买卖商品）的应用程序。以下是如何使用这个插件的基本步骤：

1. 添加依赖

首先，你需要在 pubspec.yaml 文件中添加 jual_beli_tokody 插件的依赖。

dependencies:
  flutter:
    sdk: flutter
  jual_beli_tokody: ^1.0.0  # 请使用最新版本

然后运行 flutter pub get 来获取依赖。

2. 导入插件

在你的 Dart 文件中导入插件：

import 'package:jual_beli_tokody/jual_beli_tokody.dart';

3. 初始化插件

在应用程序启动时初始化插件：

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await JualBeliTokody.initialize();
  runApp(MyApp());
}

4. 使用插件功能

jual_beli_tokody 插件提供了多种功能来管理交易。以下是一些常见的用例：

4.1 创建交易

Transaction transaction = Transaction(
  id: '12345',
  productName: 'Laptop',
  price: 1000.0,
  quantity: 1,
  buyer: 'John Doe',
  seller: 'Jane Doe',
  date: DateTime.now(),
);

await JualBeliTokody.createTransaction(transaction);

4.2 获取所有交易

List<Transaction> transactions = await JualBeliTokody.getAllTransactions();

4.3 更新交易

Transaction updatedTransaction = transaction.copyWith(price: 1200.0);
await JualBeliTokody.updateTransaction(updatedTransaction);

4.4 删除交易

await JualBeliTokody.deleteTransaction('12345');

5. 示例代码

以下是一个简单的示例，展示了如何使用 jual_beli_tokody 插件来创建、读取、更新和删除交易：

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

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await JualBeliTokody.initialize();
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: TransactionScreen(),
    );
  }
}

class TransactionScreen extends StatefulWidget {
  [@override](/user/override)
  _TransactionScreenState createState() => _TransactionScreenState();
}

class _TransactionScreenState extends State<TransactionScreen> {
  List<Transaction> transactions = [];

  [@override](/user/override)
  void initState() {
    super.initState();
    _loadTransactions();
  }

  Future<void> _loadTransactions() async {
    List<Transaction> loadedTransactions = await JualBeliTokody.getAllTransactions();
    setState(() {
      transactions = loadedTransactions;
    });
  }

  Future<void> _createTransaction() async {
    Transaction transaction = Transaction(
      id: DateTime.now().millisecondsSinceEpoch.toString(),
      productName: 'Smartphone',
      price: 500.0,
      quantity: 1,
      buyer: 'Alice',
      seller: 'Bob',
      date: DateTime.now(),
    );
    await JualBeliTokody.createTransaction(transaction);
    _loadTransactions();
  }

  Future<void> _updateTransaction(Transaction transaction) async {
    Transaction updatedTransaction = transaction.copyWith(price: 600.0);
    await JualBeliTokody.updateTransaction(updatedTransaction);
    _loadTransactions();
  }

  Future<void> _deleteTransaction(String id) async {
    await JualBeliTokody.deleteTransaction(id);
    _loadTransactions();
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Transaction Management'),
      ),
      body: ListView.builder(
        itemCount: transactions.length,
        itemBuilder: (context, index) {
          final transaction = transactions[index];
          return ListTile(
            title: Text(transaction.productName),
            subtitle: Text('Price: ${transaction.price}'),
            trailing: Row(
              mainAxisSize: MainAxisSize.min,
              children: [
                IconButton(
                  icon: Icon(Icons.edit),
                  onPressed: () => _updateTransaction(transaction),
                ),
                IconButton(
                  icon: Icon(Icons.delete),
                  onPressed: () => _deleteTransaction(transaction.id),
                ),
              ],
            ),
          );
        },
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _createTransaction,
        child: Icon(Icons.add),
      ),
    );
  }
}