Questions tagged [nsfetchedresultscontroller]

An Apple controller used to efficiently manage the results returned from a Core Data (core-data) fetch request to provide data for a UITableView or UICollectionView object.

From Apple Official NSFetchedResultsController Document, fetched results controllers provide the following features:

• Optionally monitor changes to objects in the associated managed object context, and report changes in the results set to its delegate (see: The Controller’s Delegate).

• Optionally cache the results of its computation so that if the same data is subsequently re-displayed, the work does not have to be repeated (see: The Cache).

Example:

NSFetchedResultsController *controller = [[NSFetchedResultsController alloc]
    initWithFetchRequest:fetchRequest
    managedObjectContext:context
    sectionNameKeyPath:nil
    cacheName:@"<#Cache name#>"];

[fetchRequest release];

Questions in Stack overflow related coredata

1. Good tutorials or good for using Core.Data in IOS 7

2. JSON and Core Data on the iPhone

3. Why use NSFetchedResultsController?