从 Core Data 的正确位置更新 UISearchBar 数据源

发布于 2024-11-09 14:46:57 字数 756 浏览 5 评论 0原文

在我的应用程序中，我的表格视图上方有一个搜索栏。我的问题是这样的：

如果我进入表格视图并将一个项目添加到层次结构的任何级别，然后返回到根（搜索栏所在的位置）并尝试搜索它，它不会显示结果呢。

例如，如果应用程序启动时核心数据中已经有 itemOne 和 itemTwo，我可以很好地搜索并找到它们。但是，如果我添加 itemThree 并尝试搜索它，则找不到它。

我的搜索栏用于将 Core Data 中的所有项目加载到的数组位于 viewDidLoad 方法中：

- (void)viewDidLoad 
{

    listOfItems = [[NSMutableArray alloc] init];

    NSMutableArray* allItemArray = [CoreDataHelper searchObjectsInContext:@"Item" :entitySearchPredicate :@"Description" :YES :managedObjectContext];
    NSDictionary *allItemDict = [NSDictionary dictionaryWithObject:allItemArray forKey:@"Items"];

    [listOfItems addObject:allItemDict];
}

我知道在添加最后一个项目后 viewDidLoad 没有运行，这就是我的问题。但我不知道将该代码放在哪里，它将使用已添加的任何项目进行更新。

任何意见都会受到赞赏。谢谢。

原文

In my app, I have a search bar above my table view. My problem is this:

If I go into my table view and add an item to any level of the hierarchy, and then go back to the root (where the search bar is) and try to search for it, it doesn't show up in the results it.

For example, if I already have itemOne and itemTwo in core data when the app is launched, I can search and find them just fine. But if I add itemThree and try to search for it, it is not found.

The array that my search bar uses to load all of the items from Core Data into is located in the viewDidLoad method:

- (void)viewDidLoad 
{

    listOfItems = [[NSMutableArray alloc] init];

    NSMutableArray* allItemArray = [CoreDataHelper searchObjectsInContext:@"Item" :entitySearchPredicate :@"Description" :YES :managedObjectContext];
    NSDictionary *allItemDict = [NSDictionary dictionaryWithObject:allItemArray forKey:@"Items"];

    [listOfItems addObject:allItemDict];
}

I know that the viewDidLoad isn't running after I add the last item, and that is my problem. But I don't know where to put this code that it will update with any items that have been added.

Any input is appreciated. Thanks.

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