其实和java是一样的，百度下吧

详情参见API文档，个人认为还是用fastjson比较方便。

栗子：
{“calendar”: 
    {“calendarlist”: 
            [ 
            {“calendar_id”:”1705″,”title”:”(\u4eb2\u5b50)ddssd”,”category_name”:”\u9ed8\u8ba4\u5206\u7c7b”,”showtime”:”1288927800″,”endshowtime”:”1288931400″,”allDay”:false}, 
            {“calendar_id”:”1706″,”title”:”(\u65c5\u884c)”,”category_name”:”\u9ed8\u8ba4\u5206\u7c7b”,”showtime”:”1288933200″,”endshowtime”:”1288936800″,”allDay”:false} 
            ] 
    } 
}

JSON转换
JSONObject jsonObject = new JSONObject(builder.toString()) 
                            .getJSONObject(“calendar”); 
                    JSONArray jsonArray = jsonObject.getJSONArray(“calendarlist”); 
                    for(int i=0;i<jsonArray.length();i++){ 
                        JSONObject jsonObject2 = (JSONObject)jsonArray.opt(i); 
                        CalendarInfo calendarInfo = new CalendarInfo(); 
                        calendarInfo.setCalendar_id(jsonObject2.getString(“calendar_id”)); 
                        calendarInfo.setTitle(jsonObject2.getString(“title”)); 
                        calendarInfo.setCategory_name(jsonObject2.getString(“category_name”)); 
                        calendarInfo.setShowtime(jsonObject2.getString(“showtime”)); 
                        calendarInfo.setEndtime(jsonObject2.getString(“endshowtime”)); 
                        calendarInfo.setAllDay(jsonObject2.getBoolean(“allDay”)); 
                        calendarInfos.add(calendarInfo); 
                    }