How to get first and last date of weeks on basis of month and year in android

Question

how to get first and last date of weeks on basis of month and year in android ex:we pass month and year (March,2016) then i want all weeks just like mar5- mar11,(sat to fri) mar12- mar18, mar19- mar25, mar26-april01

please help me

@Ahamed I need some thing like getWeekendsOftheMonth(2,2016) for feb,2016 — Shubham Verma, Dec 21 '16 at 10:00
see my dateformat answer. http://stackoverflow.com/questions/3056703/simpledateformat-ignoring-month-when-parsing/38217721#38217721 — Noorul, Dec 21 '16 at 10:10
@Ahamed There is little bit change in your code date formate is "dd,MMMM,yyyy" please remove last two MM from month then it fine. — Shubham Verma, Dec 21 '16 at 10:19

score 2 · Answer 1 · answered Dec 21 '16 at 11:09

Call this function to get results in a valid week pair list of given month of a year.

ex: getWeekStartEnd("December","2016");

Result: [ December3-December9, December10-December16, December17-December23, December24-December30 ]

List<String> getWeekStartEnd (String month , String year) {
        List<String> validWeekPairs = new ArrayList<>();
        SimpleDateFormat sdf = new SimpleDateFormat("dd-MMMMM-yyyy");
        String day = "01";
        try {
            Date date = sdf.parse(day + "-" + month + "-" + year);
            Calendar calendar = Calendar.getInstance();
            calendar.clear();
            calendar.setTime(date);
            calendar.setFirstDayOfWeek(Calendar.SATURDAY);

            List<String> startDayOfWeek = new ArrayList<>();
            List<String> endDayOfWeek = new ArrayList<>();
            int daysInMonth = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
            boolean isStartDaySet = false;
            boolean hasLastDayOfWeek = true;
            for (int currentDay = 01; currentDay <= daysInMonth; currentDay++) {
                Date newDate = sdf.parse(currentDay + "-" + month + "-" + year);
                calendar.setTime(newDate);
                int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);
                if (dayOfWeek == Calendar.SATURDAY) {
                    if (hasLastDayOfWeek) {
                        startDayOfWeek.add(month + String.valueOf(currentDay));
                        isStartDaySet = true;
                        hasLastDayOfWeek = false;
                    }
                } else if (dayOfWeek == Calendar.FRIDAY) {
                    if (isStartDaySet) {
                        endDayOfWeek.add(month + String.valueOf(currentDay));
                        hasLastDayOfWeek = true;
                    }
                }


            }


            for (int i = 0; i < endDayOfWeek.size(); i++) {
                validWeekPairs.add(startDayOfWeek.get(i) + "-" + endDayOfWeek.get(i));
            }

            return validWeekPairs;

        } catch (ParseException e) {
            e.printStackTrace();
            return validWeekPairs;

        }catch (Exception e){
            e.printStackTrace();
            return validWeekPairs;
        }

    }

,Yes this is actual solution Bro...Its work for me .Thanks alot. — Shubham Verma, Dec 21 '16 at 11:15
There is one problem .This method doesn't fetch last week if it is partially in other month for ex:getWeekStartEnd( January,2017) result: January7-January13 January14-January20 January21-January27 but we dont get this below week: January28- February3 Then how we solve this problem — Shubham Verma, Dec 21 '16 at 12:59
From your question , i designed the function to get the full weeks of a particular month! Anyways , i will try to give a update later! — Sadiq Md Asif, Dec 21 '16 at 16:45

score 1 · Answer 2 · answered Dec 21 '16 at 07:46

1

If you are using java.util.Date you can use the method getDay(). It returns Calendar constant, like Calendar.MONDAY.

answered Dec 21 '16 at 07:46

Ihor Dobrovolskyi

1,241
9
19

Noorul · Answer 3 · 2016-12-21T13:19:34.327

You can pass the string as 02,2016

List<String> getWeekendsOftheMonth(String monthYearString) {
         long monthDate;
         List<String> weekEnds = new ArrayList<>();
         SimpleDateFormat simpleDateFormat= new SimpleDateFormat("dd,MM,yyyy");
         try {
               monthYearString="01,".concat(monthYearString);
               monthDate = simpleDateFormat.parse(monthYearString).getTime();
               Calendar calendar = Calendar.getInstance();
               calendar.setTimeInMillis(monthDate);
               int maxDate = calendar.getActualMaximum(Calendar.DATE);
               int minDate = calendar.getActualMinimum(Calendar.DATE);
               for (int i = minDate; i <= maxDate; i++) {
                   calendar.set(Calendar.DATE, i);
                   if (calendar.get(Calendar.DAY_OF_WEEK) == Calendar.FRIDAY|| calendar.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY) {
                     weekEnds.add(convertToDate(calendar.getTimeInMillis()));
                   }
               }
             }catch (Exception e){
                    e.printStackTrace();
            }
    return weekEnds;
 }

    String convertToDate(Long datetime) {
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd MMM. yyyy");
        Date date = new Date(datetime);
        return simpleDateFormat.format(date);
    }

you can do it from this method.

Thanks for answer but i want to pass only month and year as parameter to get days.But you are using some long date . — Shubham Verma, Dec 21 '16 at 08:58
Thanks my problem is solve through your edited code.You save my day. — Shubham Verma, Dec 21 '16 at 10:16

How to get first and last date of weeks on basis of month and year in android

3 Answers3