You can convert you string date into Long Then Put up it into Database: if you have Date String something like this 22/11/2013 12:10:00 you can simply convert it with the help of SimpleDateFormater
public static long convertStringDateToLong(String dateTime){
try {
DateFormat f = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");
Date d = f.parse(dateTime);
long milliseconds = d.getTime();
return milliseconds;
} catch (Exception e) {
return 0;
}
}
SimpleDateFormate Depends on you Date String formate.