Join Simon Allardice for an in-depth discussion in this video Converting store types, part of Core Data for iOS and OS X.
I have this new, although straightforward, Cocoa application I've just written and started…to use adding some simple objects to it.…Now I have accepted the default store type that Xcode has provided for this application,…which of course, would be XML because it's a Cocoa app.…If I wanted to check then I would look in the AppDelegate file in the method that creates…the persistentStoreCoordinator.…Because it's here that it's looking for the file address, making sure that something is…there, creating a directory, if it's not, and this is the part we are really interested…in is adding the persistent store with the type, NSXMLSStoreType.…
Now if I had not started to actually use this application and add data to the store, I could…just go ahead and change the store type to one of the other, say NSSQLiteStoreType, and…go ahead and run that, we're going to have a problem.…The file couldn't be open because it isn't in the correct format.…Well, that kind of makes sense.…Now seeing as I'd only created three simple objects.…
- 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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