库存管理应用-墙外贴吧

开发一个具有地理位置的离线_inventory_management_app

以下是 Flutter 和 Dart 项目结构的说明：

invy/
assets/
fonts/
icons/
img/
themes/
main.dart
lib/
models/
item.dart
category.dart
purchase.dart
sale.dart
settings.dart
screens/
settings_screen.dart
item_screen.dart
category_screen.dart
sale_screen.dart
purchase_screen.dart
home_screen.dart
navigation/
home_bottom_navigation.dart
widget/
custom_app_bar.dart
custom_bottom_navigation_bar.dart
custom_card.dart
custom_dialog.dart
custom_expansion_tile.dart
custom_floating_action_button.dart
database/
database_helper.dart
hive_helper.dart
sqlite_helper.dart
services/
item_service.dart
category_service.dart
purchase_service.dart
sale_service.dart
util/
animations.dart
extensions.dart
theme.dart
main.dart
test/
runner.dart
widget_test.dart
pubspec.yaml

下面是程序的源代码：

// lib/models/item.dart
class Item {
  String id;
  String name;
  String category;
  String imageUrl;
  String description;
  int quantity;
  double purchasePrice;
  double sellingPrice;

  Item({
    required this.id,
    required this.name,
    required this.category,
    required this.imageUrl,
    required this.description,
    required this.quantity,
    required this.purchasePrice,
    required this.sellingPrice,
  });

  factory Item.fromJson(Map<String, dynamic> json) {
    return Item(
      id: json['id'],
      name: json['name'],
      category: json['category'],
      imageUrl: json['imageUrl'],
      description: json['description'],
      quantity: json['quantity'],
      purchasePrice: json['purchasePrice'],
      sellingPrice: json['sellingPrice'],
    );
  }

  Map<String, dynamic> toJson() {
    return {
      'id': id,
      'name': name,
      'category': category,
      'imageUrl': imageUrl,
      'description': description,
      'quantity': quantity,
      'purchasePrice': purchasePrice,
      'sellingPrice': sellingPrice,
    };
  }
}

// lib/models/category.dart
class Category {
  String id;
  String name;

  Category({
    required this.id,
    required this.name,
  });

  factory Category.fromJson(Map<String, dynamic> json) {
    return Category(
      id: json['id'],
      name: json['name'],
    );
  }

  Map<String, dynamic> toJson() {
    return {
      'id': id,
      'name': name,
    };
  }
}

// lib/models/purchase.dart
class Purchase {
  String id;
  String date;
  String item;
  int quantity;
  double total;

  Purchase({
    required this.id,
    required this.date,
    required this.item,
    required this.quantity,
    required this.total,
  });

  factory Purchase.fromJson(Map<String, dynamic> json) {
    return Purchase(
      id: json['id'],
      date: json['date'],
      item: json['item'],
      quantity: json['quantity'],
      total: json['total'],
    );
  }

  Map<String, dynamic> toJson() {
    return {
      'id': id,
      'date': date,
      'item': item,
      'quantity': quantity,
      'total': total,
    };
  }
}

// lib/models/sale.dart
class Sale {
  String id;
  String date;
  String item;
  int quantity;
  double total;
  double discount;

  Sale({
    required this.id,
    required this.date,
    required this.item,
    required this.quantity,
    required this.total,
    required this.discount,
  });

  factory Sale.fromJson(Map<String, dynamic> json) {
    return Sale(
      id: json['id'],
      date: json['date'],
      item: json['item'],
      quantity: json['quantity'],
      total: json['total'],
      discount: json['discount'],
    );
  }

  Map<String, dynamic> toJson() {
    return {
      'id': id,
      'date': date,
      'item': item,
      'quantity': quantity,
      'total': total,
      'discount': discount,
    };
  }
}

// lib/models/settings.dart
class Settings {
  String shopName;
  String shopDetails;
  double currencySymbol;
  int lowStockThreshold;

  Settings({
    required this.shopName,
    required this.shopDetails,
    required this.currencySymbol,
    required this.lowStockThreshold,
  });

  factory Settings.fromJson(Map<String, dynamic> json) {
    return Settings(
      shopName: json['shopName'],
      shopDetails: json['shopDetails'],
      currencySymbol: json['currencySymbol'],
      lowStockThreshold: json['lowStockThreshold'],
    );
  }

  Map<String, dynamic> toJson() {
    return {
      'shopName': shopName,
      'shopDetails': shopDetails,
      'currencySymbol': currencySymbol,
      'lowStockThreshold': lowStockThreshold,
    };
  }
}

// lib/screens/settings_screen.dart
class SettingsScreen extends StatefulWidget {
  @override
  _SettingsScreenState createState() => _SettingsScreenState();
}

class _SettingsScreenState extends State<SettingsScreen> {
  final _formKey = GlobalKey<FormState>();
  final _shopNameController = TextEditingController();
  final _shopDetailsController = TextEditingController();
  final _currencySymbolController = TextEditingController();
  final _lowStockThresholdController = TextEditingController();

  void _saveSettings() {
    // 保存设置
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('设置'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Card(
          child: Padding(
            padding: const EdgeInsets.all(16.0),
            child: Form(
              key: _formKey,
              child: Column(
                children: [
                  TextFormField(
                    decoration: InputDecoration(
                      labelText: '店铺名称',
                      border: OutlineInputBorder(),
                    ),
                    controller: _shopNameController,
                  ),
                  TextFormField(
                    decoration: InputDecoration(
                      labelText: '店铺详情',
                      border: OutlineInputBorder(),
                    ),
                    controller: _shopDetailsController,
                  ),
                  TextFormField(
                    decoration: InputDecoration(
                      labelText: '货币符号',
                      border: OutlineInputBorder(),
                    ),
                    controller: _currencySymbolController,
                  ),
                  TextFormField(
                    decoration: InputDecoration(
                      labelText: '低库存阈值',
                      border: OutlineInputBorder(),
                    ),
                    controller: _lowStockThresholdController,
                  ),
                  SizedBox(height: 16),
                  ElevatedButton(
                    onPressed: _saveSettings,
                    child: Text('保存'),
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}

// lib/screens/home_screen.dart
class HomeScreen extends StatefulWidget {
  @override
  _HomeScreenState createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('首页'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Card(
          child: Padding(
            padding: const EdgeInsets.all(16.0),
            child: Column(
              children: [
                Text('总商品数量'),
                Text('总存货价值'),
                Text('今日销售额'),
                Text('低库存警告'),
                SizedBox(height: 16),
                ElevatedButton(
                  onPressed: () {
                    // 处理购买操作
                  },
                  child: Text('购买'),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}

// lib/screens/item_screen.dart
class ItemScreen extends StatefulWidget {
  @override
  _ItemScreenState createState() => _ItemScreenState();
}

class _ItemScreenState extends State<ItemScreen> {
  final _formKey = GlobalKey<FormState>();
  final _nameController = TextEditingController();
  final _categoryController = TextEditingController();
  final _descriptionController = TextEditingController();
  final _quantityController = TextEditingController();
  final _purchasePriceController = TextEditingController();
  final _sellingPriceController = TextEditingController();

  void _saveItem() {
    // 保存商品信息
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('商品列表'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Card(
          child: Padding(
            padding: const EdgeInsets.all(16.0),
            child: Form(
              key: _formKey,
              child: Column(
                children: [
                  TextFormField(
                    decoration: InputDecoration(
                      labelText: '商品名称',
                      border: OutlineInputBorder(),
                    ),
                    controller: _nameController,
                  ),
                  TextFormField(
                    decoration: InputDecoration(
                      labelText: '商品类别',
                      border: OutlineInputBorder(),
                    ),
                    controller: _categoryController,
                  ),
                  TextFormField(
                    decoration: InputDecoration(
                      labelText: '商品描述',
                      border: OutlineInputBorder(),
                    ),
                    controller: _descriptionController,
                  ),
                  TextFormField(
                    decoration: InputDecoration(
                      labelText: '商品数量',
                      border: OutlineInputBorder(),
                    ),
                    controller: _quantityController,
                  ),
                  TextFormField(
                    decoration: InputDecoration(
                      labelText: '商品购买价格',
                      border: OutlineInputBorder(),
                    ),
                    controller: _purchasePriceController,
                  ),
                  TextFormField(
                    decoration: InputDecoration(
                      labelText: '商品销售价格',
                      border: OutlineInputBorder(),
                    ),
                    controller: _sellingPriceController,
                  ),
                  SizedBox(height: 16),
                  ElevatedButton(
                    onPressed: _saveItem,
                    child: Text('保存'),
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}

// lib/services/item_service.dart
class ItemService {
  Future<List<Item>> getAllItems() async {
    // 获取所有商品
  }

  Future<void> saveItem(Item item) async {
    // 保存商品信息
  }
}

// lib/services/category_service.dart
class CategoryService {
  Future<List<Category>> getAllCategories() async {
    // 获取所有商品类别
  }

  Future<void> saveCategory(Category category) async {
    // 保存商品类别
  }
}

// lib/services/purchase_service.dart
class PurchaseService {
  Future<List<Purchase>> getAllPurchases() async {
    // 获取所有购买记录
  }

  Future<void> savePurchase(Purchase purchase) async {
    // 保存购买记录
  }
}

// lib/services/sale_service.dart
class SaleService {
  Future<List<Sale>> getAllSales() async {
    // 获取所有销售记录
  }

  Future<void> saveSale(Sale sale) async {
    // 保存销售记录
  }
}

请注意，这仅供您作为参考使用。您需要根据您的需求进行更改和完善代码。

库存管理应用

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