JSONArray の解析
{
    "SyncUserGpsDataList" :
     [
        {
            "date_time": "2013-03-23 16:34:53PLUS0530",
            "Battery": {
                "Level": "51",
                "State": "Not charging",
                "Temperature": "3.78",
                "Voltage": "30.6",
                "Health": "Good"
            },
            "Location": {},
            "GPS_bool": "true",
            "WIFI_bool": "true",
            "notes": "Trying to get location information"
        }
    ]
}
この JSONArray を解析するには?