Nsfetchedresultscontroller not updating

// abort() causes the application to generate a crash log and terminate.

Aggregate header file was also generated to /Users/vladimir/Desktop/Exarnple Magical Record/Example Magical Record/M... NSError *error = nil; if (¡[context save:&error]) { // Replace this implementation with code to handle the error appropriately.

I’ll give you the implementation and then point out a couple of “gotchas” and expound a little more.

Recall that we’re working with a sample app named “Zootastic”, so if you see references to public func controller( controller: NSFetched Results Controller, did Change Object an Object: Any Object, at Index Path index Path: NSIndex Path?

Visit Git Hub to clone or download the project we created in the previous tutorial and open it in Xcode.

Previously, I wrote that a fetched results controller monitors the managed object context it keeps a reference to.

, so you may want to check out those previous posts to get an idea of where I’m picking up in this walk-through.

Previously I touched on how to seed a Core Data database, and how to take that data and display it in a table view with an NSFetched Results Controller.

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) public func controller( controller: NSFetched Results Controller, did Change Section section Info: NSFetched Results Section Info, at Index section Index: Int, for Change Type type: NSFetched Results Change Type) public func controller(controller: NSFetched Results Controller, section Index Title For Section Name section Name: String) - This is the method that governs how we want to handle the rows in a table view when the synchronization would require inserting rows, updating existing ones, removing them, or reordering them.As with the previous posts, I’m providing an example XCode project over at Git Hub, so feel free to follow along with the live working example: In this installment to the series, I want to answer the question, “How do I update the rows in a table view when I add or remove objects from the Core Data database?” I will show how to implement the help inform the table view that changes are about to happen / just finished happening.Its almost unchanged from the default in the Core Data project template, the change I made is to add a predicate that always returns false, the reason being that when there is no List selected I don't want any items to be displayed in the detail view (if a list is selected the predicate is changed in the setter for the list property).However, when I select a list item, nothing really happens. Please let me know how I can avoid fetching all the entries three times.

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