Core Data fetchedresultscontroller question : what is "sections" for?

Posted by Jake on Stack Overflow See other posts from Stack Overflow or by Jake
Published on 2010-05-11T08:46:05Z Indexed on 2010/05/11 9:04 UTC
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Filed under:

core-data

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objective-c

|

iphone

|

cocoa

Hi, I'm trying to get to know Core Data (I'm a noob at iPhone development) and in order to do this I'm trying to get an object from the fetchedresultscontroller and NSlog it's name (a property of the object). I tried to do it like this:

NSArray *ar = [NSArray arrayWithArray:[fetchedResultsController sections]];
Task *t = [ar objectAtIndex:0];
NSLog(@"%@", t.taskName);

However, the app crashed with this error: the app crashes with the error

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[_NSDefaultSectionInfo taskName]: unrecognized selector sent to instance 0x3d1f670'

I have since learned that you need to use the fetched objects property for this, but then what is sections for? Thanks for any help, sorry if this is a supremely stupid question. I've looked over the documentation but still don't understand.

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