Ios moveRowAt使用域对TableView重新排序

我有一个领域模型：

class ShoppingListItem: Object {
    @objc dynamic var department: String = ""
    var item = List<ShoppingItem>()
}

class ShoppingItem: Object {
    @objc dynamic var name: String = ""
    @objc dynamic var checked: Bool = false
    @objc dynamic var sortingIndex = 0
}

---

领域列表对象的一个很酷的地方是它们保持了它们的顺序

在这种情况下，您不需要sortingIndex属性，因为这些项存储在列表中

class ShoppingListItem: Object {
    @objc dynamic var department: String = ""
    var item = List<ShoppingItem>() <- order is maintained
}

或者使用超级简单移动将对象从一个索引移动到另一个索引

itemList.move(from: 5, to: 1)

class ShoppingListItem: Object {
    @objc dynamic var department: String = ""
    var item = List<ShoppingItem>() <- order is maintained
}

itemList.remove(at: 5) //remove the shoppingItem object at index 5
itemList.insert(shoppingItem, at: 1) //insert the object at index 1

itemList.move(from: 5, to: 1)