objective c - Retrieve Values from Dictionary inside NSDictionary in iOS -

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how can retrieve values json below? 

"itemid": 115,   "name": "test items receive",   "description": "recevive",   "itemcode": "aaa-rc-it1",   "quantity":9000,   "warehouselocationid": 560,   "transactiondate": "\/date(-62135596800000+0530)\/",   "transactiontime": "pt11h9m0.6074603s",   "comment": null,   "username": "virtual",   "customeritem": {     "itemid": 0,     "itemcode": null,     "description": null,     "customerid": 10004   },

i have done till username, not working customeritem.

dicionaryname[@"key"][@"key"][@"key"] , on. if supply pretty printed json helpful. parsing use nsjsonserialization class.

edit:

to item id , 

dictionaryname[@"customeritem"][@"itemid"]

to item code: 

dictionaryname[@"customeritem"][@"itemcode"]

and on.


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