Adding Core Data to existing iPhone project

by

All the CoreData header files are imported in App_Prefix.pch, so the CoreData classes will be available throughout your Project, so you don’t have to manually import the header in the files you need them.

So open up Xcode and look for some file like App_Prefix.pch, by default it’s in the Other Sources group. After the UIKit import statement, add the following line:

#import <CoreData/CoreData.h>

And you should be ready to go.

Xcode 4

For projects created in Xcode 4, the prefix file can be found in the Supporting Files group in the Project navigator. It’s called ‘projectname-Prefix.pch’ by default.

Xcode 6+

Starting with Xcode 6, the precompiled header file is no longer included by default. This is because of the introduction of Modules, which take away the need to use precompiled headers. While it is still possible to manually add a PCH file to globally include the CoreData headers, consider specifying the CoreData dependency using @import CoreData;* in every file that uses CoreData. This makes dependencies explicit and more importantly will avoid this question’s problem in the future.

* Modules need to be enabled for this to work.

More Related Contents:

  1. Swift Send Data to a ViewController from a ViewController [duplicate]
  2. Any way to pre populate core data?
  3. Core Data: Quickest way to delete all instances of an entity
  4. The model used to open the store is incompatible with the one used to create the store
  5. Sqlite File Location Core Data
  6. Core Data and iOS 7: Different behavior of persistent store
  7. Check if property is set in Core Data?
  8. Core Data background context best practice
  9. Xcode is looking for core data entity names with dot; not compiling
  10. How to implement re-ordering of CoreData records?
  11. How to add unique constraints for some fields in Core Data
  12. How to create managedObjectContext using Swift 3 in Xcode 8?
  13. Core Data – Failed to load optimized model at path
  14. How to store an image in core data
  15. Swift 3 Core Data Delete Object
  16. iPhone Core Data “Automatic Lightweight Migration”
  17. How do you update a CoreData entry that has already been saved in Swift?
  18. Core Data: Do child contexts ever get permanent objectIDs for newly inserted objects?
  19. How to print Core Data debug values?
  20. Core Data in Swift: Only saving last object in a for loop
  21. Core Data multi thread application
  22. Correct implementation of parent/child NSManagedObjectContext
  23. Xcode 6 iPhone Simulator Application Support location
  24. +entityForName: nil is not a legal NSManagedObjectContext parameter searching for entity name ‘Account”
  25. How to get URL for a PHAsset? [duplicate]
  26. Accessing Core Data Stack in MVVM application
  27. How to properly group a list fetched from CoreData by date?
  28. Using Core Data, iCloud and CloudKit for syncing and backup and how it works together
  29. Implementing Fast and Efficient Core Data Import on iOS 5
  30. How to disable no inverse relationship warning for CoreData in Xcode 4.2?

Leave a Comment