Join Simon Allardice for an in-depth discussion in this video Preloading default data, part of Core Data for iOS and OS X.
Earlier in the course we created this iOS application for editing these course entities.…We'll click the Plus button, and fill out some data, save it, there we go.…But what if we'd wanted this application to be preloaded with data?…So the first time anyone opens the application, it's got a bunch of courses already inside.…Well, I can't just go through and create several entries and be done with that, because the…store part of this, the actual file that's being saved is not part of the project assets,…it's stored purely at a user level.…
So I could create a hundred courses in here, but as soon as I install this program on another…device, I'd have nothing. We have a few options for preloading data.…One, we could write some one-time only code to detect if it's the first time the application…runs, instantiate a bunch of objects, and immediately save them to the new store file.…Now this is possible, but it's going to interrupt that initial startup, and you'd only ever…want to do this for small, or dare I say tiny, amounts of data.…
- 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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