ios中json返回字符串的解析

Question

我用同步get获得的网站返回的字符串str3为{"ErrorCode":0,"Exception":null,"IsCompleted":true,"Result":"{\"CompanyCode\":\"100000\",\"CompanyID\":\"1\",\"CompanyName\":\"百汇百通位置服务平台\",\"DataRights\":\"ALL\",\"GprsPort\":\"\",\"GpsDeviceNo\":\"\",\"GpsDeviceType\":\"\",\"LicensePlate\":\"\",\"Privileges\":\"ALL\",\"Result\":\"0\",\"RoleID\":\"1\",\"RoleName\":\"系统管理员\",\"SimcardNo\":\"\",\"UserName\":\"超级管理员\",\"UserType\":\"1\",\"VehicleID\":\"\"}"}
请问我怎样子才能用ios原生库来解析json数据呢？

Answer 1

参考：
http://www.cnblogs.com/jiangyuxuan/archive/2013/03/09/2950984.html