First thing you should learn is basic research.
1. Q: iThingies are programmed in what?
1. A: Objective-C
2. Q: What is it again you wanted to use?
2. A: JSON
Google query therefore: Objective-C JSON
Result:
NSJSONSerialization Class Reference
[
^]
Page Excerpt:
"You use the NSJSONSerialization class to convert JSON to Foundation objects and convert Foundation objects to JSON. An object that may be converted to JSON must have the following properties:"
Wow! That was easy now, wasn't it?
Regards,
— Manfred