在我的应用程序中,我使用了 3 个相互嵌套的类,我决定使用似乎比 sqlite 更容易的 hive 包,我已经根据 hive.dev 设置了 hive 包,并且我没有遇到与设置过程相关的任何错误,我想将我的对象存储在蜂巢框中,当我创建主类别对象并添加到蜂巢框时,我可以在我的主页中收到它,但是当我想将子类别添加到任何特定的主对象时,我无法访问子类别列表,或者我不明白我到底要做什么,有人可以帮我创建必要的功能吗?我在下面分享了 3 个类和 hiveHelper 类。谢谢你的帮助。
part 'categoryModel.g.dart';
@HiveType(typeId : 0)
class CategoryModel extends HiveObject{
CategoryModel(
{ this.categoryId,
this.categoryImagePath,
this.categoryName,
this.categoryColor,
this.subCategoryModels});
@HiveField(0)
final int categoryColor;
@HiveField(1)
List <SubCategoryModel> subCategoryModels=[];
@HiveField(2)
int categoryId;
@HiveField(3)
String categoryImagePath;
@HiveField(4)
String categoryName;
}
part 'subCategoryModel.g.dart';
@HiveType(typeId : 1)
class SubCategoryModel extends HiveObject{
SubCategoryModel({
this.subCategoryId,
this.subCategoryImagePath,
this.subCategoryName,
this.categoryColor,
this.recipeId,
List<Ingredient>ingredients,
this.recipePhotoDir,
this.recordedVoiceDir,
bool isCompeted});
@HiveField(0)
final int categoryColor;
@HiveField(1)
final double recipeId;
@HiveField(2)
bool isCompleted;
@HiveField(3)
int subCategoryId;
@HiveField(4)
String subCategoryImagePath;
@HiveField(5)
String subCategoryName;
@HiveField(6)
List <Ingredient> ingredients=[] ;
@HiveField(7)
String recipePhotoDir;
@HiveField(8)
String recordedVoiceDir;
}
@HiveType(typeId: 2)
class Ingredient extends HiveObject{
Ingredient({this.ingredientName,
this.dropDownValue,
this.ingredientAmount});
@HiveField(0)
final ingredientName;
@HiveField(1)
String dropDownValue;
@HiveField(2)
String ingredientAmount;
}
class HiveHelper{
void addCategoryModel(CategoryModel categoryModel)async{
var box = await Hive.openBox('categoryModelsInBox');
await box.add(categoryModel);
await Hive.close();
}
Future <Map> getCategoryModels()async{
var box = await Hive.openBox('categoryModelsInBox');
var boxToMap=box.toMap();
await Hive.close();
return boxToMap;
}
void addSubCategory(SubCategoryModel subCategoryModel, key)async{
var box = await Hive.openBox('categoryModelsInBox');
box.put(key, subCategoryModel);
}
}