NSString *str = @"{\"123123\":\"1\"}"; NSDictionary *jsonObj = [str objectFromJSONString]; [jsonObj JSONData]; crash on [jsonObj JSONData]; only who know how to solve this? 
NSString *str = @"{"123123":"1"}";
NSDictionary *jsonObj = [str objectFromJSONString];
[jsonObj JSONData];
crash on [jsonObj JSONData];
only who know how to solve this?