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Editorial Team
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Asked: 2026-05-18T08:50:07+00:00

I have a very simple Core Data app which pretty much contains strings of

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I have a very simple Core Data app which pretty much contains strings of text. I would like to make this text searchable, and can see a “Search Bar and Search Display Controller” object in Interface Builder.

Firstly, would using this Search Bar and Search Display Controller be the best approach for a simple Core Data-driven text search? Secondly, could you point me to some resources which would get me started? Possibly a nice step by step guide or a sample project – the simpler the better.

I have looked both on SO and the Apple iPhone Dev Center but I can’t seem to find anything. Thanks again!

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1 Answer

  1. Editorial Team

    This is how I did it.
    When the delegate 

    - (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText

    tells me the user typed something in the search bar, I create a predicate

    [NSPredicate predicateWithFormat:@"string CONTAINS[c] %@",searchText];

    fetch the results from the MOC with this predicate, update my results array and tell the results table view to reload 

    [[self.searchDisplayController searchResultsTableView] reloadData];

    If you have a lot a results you can try setting a fetch limit, and load all the results if the user presses the search button.

    - (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar;

    Hope this helps.

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