CODEWITHSUNDEEP
iphoneobjective-cdata-structures
Jason
Jason

Reputation: 452

Storing Custom Classes in Objective-C

I need to take existing classes for an iPhone application and store them in a preference/plist/some other data storage format. A good comparison of what I need to store is a gradebook, with the following class structure:

GBGradebook + NSArray (GBAssignment) + NSArray (GBClasses) + NSArray (GBStudent)

GBStudent + NSString *studentName ...

GBAssignment + GBGrade *grade ...

GBGrade + NSNumber *pointsReceived + NSNumber *maxPoints ...

That's the basic class structure. What is the best way to store this data?

Upvotes: 0

Views: 454

Answers (3)

Alex Reynolds
Alex Reynolds

Reputation: 96937

Core Data is your best bet. There's a bit of a learning curve, but it is designed to address your storage question as well as provide other benefits, such as SQL-like querying.

Upvotes: 0

mahboudz
mahboudz

Reputation: 39376

I'm not an expert at it, but Core Data may also be an option. There is also SQLLitePersistentObjects.

Upvotes: 1

Dave DeLong
Dave DeLong

Reputation: 243146

Here's a tutorial on how to do exactly that using the NSCoding protocol and NSKeyedArchiver (and its counterpart, NSKeyedUnarchiver): http://cocoaheads.byu.edu/wiki/nscoding

Basically you implement two methods and you're done.

Upvotes: 8

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