load data from JSON to an object programmatically?

I have data from JSON response that I am transferring to an array as sh开发者_如何学编程own below

            originalPerson.firstname  = [memberData valueForKey:@"firstname"];
            originalPerson.lastname   = [memberData valueForKey:@"lastname"];                              
            originalPerson.address1   = [memberData valueForKey:@"address1"];

Is there a way to handle this in a loop rather than typing each line out? TIA

If the class of the instance originalPerson is key-value coding (KVC) compliant, you could use something like

for (NSString* key in [NSArray arrayWithObjects:@"firstname", @"lastname", @"address1", nil]) {
    [originalPerson setValue:[memberData valueForKey:key] forKey:key];
}

or even

for (NSString* key in [memberData allKeys]) {
    [originalPerson setValue:[memberData valueForKey:key] forKey:key];
}

if member data is a dictionary and you're sure (or check that) originalPerson has the corresponding properties. I don't know how you are parsing your JSON but I recomend SBJSON for objective C.

You can also do

[originalPerson setValuesForKeysWithDictionary:memberData]

be careful that memberData should not contain any key that does not correspond to an attribute of originalPerson, or the runtime will raise an exception.