尝试一下，

SBJSON *jsonData = [SBJSON alloc]init]; - Objective c

private JSONObject jObject; - Java

//您将获得一个JSON数据-目标C

// you get a JSON Data - Objective C

NSDictionary *errorString = [[jsonData objectForKey:@"error_string"] retain];

对于Java-

jObject = new JSONObject(errorString); 

JSONArray menuitemArray = popupObject.getJSONArray("error_string");

String attributeValue = jObject.getString("value");

System.out.println(attributeValue);