Converting JSON to Objective-C object using key value coding

Question

I am an Objective-C newbie coming from the Java world, so I am trying to find out how to do something that would be (relatively) straightforward to do in Java.

In an iPhone app I am accessing a rest webservice that returns JSON. I am using the AFNetworking framework, which provides support for using the NSJSONSerialization class added to iOS 5. I would like to know if there is an "automatic" way to turn the JSON object that is returned into one of my "strongly" typed classes (for example, my UserAccount class).

In other words, I'm trying to do something like:

id json = ... call webservice that returns json, which AFNetworking parses ...
UserAccount myUserAccount = [UserAccount alloc] init];
//then here I'd like something that iterates through all the properties on the 
//json object and sets them on the myUserAccount object using key value coding

Is there a straightforward way to accomplish this?

I agree with the below answer. You can also check stackoverflow.com/questions/7284391/… — iDev
– iDev, Commented Nov 9, 2012 at 3:52

iDev · Accepted Answer · 2012-11-09 03:47:19Z

1

Nope, not that I know of. The most common way is to add a constructor to your class called initWithDictionary, that accepts the JSON dictionary and gets the relevant information from it.

edited Nov 9, 2012 at 3:47

iDev

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answered Nov 9, 2012 at 3:34

Bergasms

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1 Comment

adevine Over a year ago

Thanks, this info was helpful. I figured out how to somewhat genericize this by iterating over the keys in the NSDictionary and using that to set property values on my object using key value coding.

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