nsfetchedresultscontroller

When the user presses Edit, my UITableView adds an insert row at the top (with a green plus), and puts all the other rows into delete mode (red minus). Alternatively, the user can swipe-to-delete without pressing the edit button. I am using a couple of Ivars to keep track of whether the table is in edit mode from a swipe, or from pressing the edit button, and act accordingly (e.g. updating numberOfRowsInTableView: with the extra insert row when Edit has been pressed). Everything works perfectly except on thing: when in Edit mode (i.e. the user has explicitly hit the edit button, and the insert

I added the option in my tableview to sort/reorder cells. I used this tutorial: http://www.ioscreator.com/tutorials/reordering-rows-table-view-ios8-swift . Now I'd like to ask how I can save the sorting/order of the cells? I also use Core Data and the fetchedResultsController . Add an extra attribute to your Core Data model object that is used to store the sort order. For example, you could have an orderIndex attribute: class MyItem: NSManagedObject { @NSManaged var myOtherAttribute: String @NSManaged var orderIndex: Int32 } Then, use this attribute in your sort descriptor for your fetched

I have an UITableView populated by a NSFetchedResultsController . The initial fetch works fine. I can add, remove, modify, etc with zero problems.. But I want to add user-defined sorting to the table. I am doing this by changing the NSFetchedResultsController to use a different sortDescriptor set, and a different sectionNameKeyPath . Here is the code where I change the fetch: -(void)changeFetchData { fetchedResultsController = nil; NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"Object" inManagedObjectContext

I'm having some issues with a mixed, indexed, searchable results set from an NSFetchedResults controller. I have it set up to store an indexed A-Z first initial for an entity, and then want it to display numeric first initials (i.e. # as the UILocalizedIndexCollation would do). I have already written the code that saves a "firstInitial" attribute of an Artist object as NSString @"#" if the full name started with a number, and I seem to have gotten the code half working in my UITableViewController with a customised sort descriptor. The problem is that it only works until I quit/relaunch the app

I have a fetched result with a single section. I am able to access the objects using [[fetchedResultsController fetchedObjects] objectAtIndex:index] for all of the objects. But it is failing when I use objectAtIndexPath like this: [fetchedResultsController objectAtIndexpath:indexPath] An error occurs after I insert an row (for one of the SearchResult objects) into the corresponding table. The object appears to be inserted into the new table correctly. After I have visually confirmed this, I select one of the rows, and then the fun begins. Here is the code where the error is occurring: - (void

I have a NSFetchedResultsController initiated in the following way: NSEntityDescription *myEntity = [NSEntityDescription entityForName:@"MyEntity" inManagedObjectContext:managedObjectContext]; NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; [fetchRequest setEntity:myEntity]; [fetchRequest setFetchBatchSize:10]; [fetchRequest setPredicate:[NSPredicate predicateWithFormat:@"wasDeleted == %@", [NSNumber numberWithBool:NO]]]; NSSortDescriptor *sortDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"name" ascending:YES selector:@selector(caseInsensitiveCompare:)]; [fetchRequest

I have a CoreData model that can contain an infinite number of children. And I want to display a list of each object, indented for readability like so Object Object first child first childs children first child children Object second child Object 2 Object also has children MOre children Childs Now I come from a PHP background. and in PHP I would create a simple array which Ill traverse with some functions to build this list but this still seems stupidly hard for me. I got a flat array which basically has items like this: array.name = @"Name"; array.children = nil or coredata rows array.parent