iphone - How to store custom objects with struct in Coredata

Question

I have to store a custom class object to Coredata. The problem is my custom class contains structs,enum etc.I tried following method.

-(void)encodeWithCoder:(NSCoder *)encoder .

But am getting this error

[NSKeyedArchiver encodeValueOfObjCType:at:]: this archiver cannot encode structs'

What is the best practice to store this object to Coredata. Please help me.

Answer 1

You can wrap the struct in a NSData, ie

To encode with archiver

[coder encodeObject:[NSData dataWithBytes:&my_struct length:sizeof(my_struct)] 
             forKey:@"my_struct"];

and to decode with archiver

NSData *data = [coder decodeObjectForKey:@"my_struct"];
[data getBytes:&my_struct length:sizeof(my_struct)];