How to add days into the date in android

Question

In my database I am getting start date like 2011-11-30(yyyy/mm/dd)format.and duration date like 40 days.How can i calculate the days and get new date format of mm/dd/yyyy.

Answer 1

This piece of code should do the job well!!!

public static String addDay(String oldDate, int numberOfDays) {
    SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
    Calendar c = Calendar.getInstance();
    try {
        c.setTime(dateFormat.parse(oldDate));
    } catch (ParseException e) {
        e.printStackTrace();
    }
    c.add(Calendar.DAY_OF_YEAR,numberOfDays);
    dateFormat=new SimpleDateFormat("MM-dd-YYYY");
    Date newDate=new Date(c.getTimeInMillis());
    String resultDate=dateFormat.format(newDate);
    return resultDate;
}

For more functionality do please checkout this link
Add days,months,years to a date