Join Simon Allardice for an in-depth discussion in this video Why use Core Data?, part of Core Data for iOS and OS X.
So here's the world we're living in. Let's say I've written an application.…It could be on the iPhone, the iPad, the desktop.…That really doesn't matter.…I use this app, and as I do my code is instantiating objects,…some of these are simple, NSString, NSSDate, NSArrays.…More importantly, I have my own custom objects from classes I've written myself for this application.…My model objects the M part of MVC.…Now I might have objects that themselves contain other objects or have a reference from one…to another, and I end up with perhaps a handful of these, but perhaps hundreds or thousands of objects.…
Now this is what's referred to as an object graph, meaning at a particular instant in…time the state of all of the objects in my application and how they are related.…But now I need to exit this application.…If I'm on iOS, I'd press the Home button and switch to another app.…Maybe I get a call, maybe my battery runs out.…If I'm on the Mac, I could quit the app or shut down my machine, but I leave the application. So what happens?…
- Understanding Core Data and object persistence frameworks
- Creating a Core Data project
- Exploring data modeling
- Creating entities, attributes, and relationships
- Creating managed objects
- Fetching in Core Data
- Implementing undo and redo support
- Creating a Core Data Cocoa app without code
- Responding to validation issues
- Converting store types
- Preloading default data
Skill Level Intermediate
Q: In the CoursesViewController.m file, I receive a message that the method dismissModalViewControllerAnimated is no longer supported by Apple. Is there a newer method to use?
A: You may have received the warning that a call to the dismissModalViewControllerAnimated: method is now deprecated.
This is a recently deprecated method, so the code _will_ continue to work using that call, but to remove the warning, change the code from:
to the current recommended version:
[self dismissViewControllerAnimated:YES completion:nil];
It should take care of that message.
1. Getting Started
2. Modeling in Core Data
3. Saving in Core Data
Creating managed objects12m 46s
4. Fetching in Core Data
Using predicates9m 32s
5. Putting It Together: iOS
6. Putting It Together: Cocoa
7. Store Types and Model Changes
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