NSUserDefaults vs sqlite3

Question

I have a small iPhone app that stores a list of objects. The user can add and remove objects, but this list will remain fairly small (most users would have 10-30 objects). <

Answer 1

Try with NSCoding protocol. Declare your class to implement NSCoding protocol:

@interface Person : NSObject 

Previous line promises to implement the following methods:

-(id)initWithCoder:(NSCoder *)coder;
-(void)encodeWithCoder:(NSCoder *)coder;

Your methods should look something like:

-(void)encodeWithCoder:(NSCoder *)coder {
  [super encodeWithCoder:coder];
  [coder encodeObject:firstName forKey:@"firstName"];
  [coder encodeObject:lastName forKey:@"lastName"];
}

-(id)initWithCoder:(NSCoder *)coder {
  [super init];
  firstName = [[coder decodeObjectForKey:@"firstName"] retain];
  lastName = [[coder decodeObjectForKey:@"lastName"] retain];
  return self;
}