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Last Updated: June 04, 2017
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45.72K
· jfsagasti
U1b6bd8ad071161fb5bd43535867f4590

How to save a NSArray/NSMutableArray in Core Data

Any class you have which conforms to the NSCoding protocol can be serialized and archived in this way. NSArray/NSMutableArray already conform this protocol. Its important to say that all of objects of the array must conform too.

If you have in your model an entity with a property of type 'Binary Data', you can store in it the array data by doing:

[...]
NSData *arrayData = [NSKeyedArchiver archivedDataWithRootObject:TheArray];
myEntity.arrayProperty = arrayData;
[self saveContext]; //Self if we are in the model class
[...]

Then you can retrieve all the original array info by doing the opposite operation:

[...]
NSMutableArray *array = [NSKeyedUnarchiver unarchiveObjectWithData:anEntity.arrayProperty];
[...]
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1774

Thanks !! This post saved my life!

over 1 year ago ·
2657
U1b6bd8ad071161fb5bd43535867f4590

I'm glad to hear that! :)

over 1 year ago ·
3405

Why would you do that? Create new model for the NSArray entries?

over 1 year ago ·
7560
0 zpipybzmzvmco8las m8yxkm4befyqlavt02yxkyfay0 g mqvrx krk9sor0txgmkdsp v4d 3o

Awesome..

over 1 year ago ·
9151
333a334c7ef9850538f348f9868e1ef1

Thanks dude, this was really helpful.

over 1 year ago ·
11948
0 lnotmmq2rg7zyfwi51z3m2gsr6zbykwibpodmd gxiuqthy wtvycsqpze4wj efxbhune8c6wh8

thanks a lot..precise and great.. saved lot of my time

over 1 year ago ·
12534
U1b6bd8ad071161fb5bd43535867f4590

Great! Thanks for your contribution simonschellaert :)

over 1 year ago ·
28136

Yes, Its works for storing array of NSObject in transformable field.
but Is is possible to store array of NSManagedObject in transformable field?
i tried it but its giving an error.
please help me.
Thanks in advance.

10 months ago ·