Java: how to parse date format to show specific output format?

Question

In my application, I get the date from my database in a specific format. (PHP generated)

I would like to show specific output in my android app:

Database entry format: 2014-05-30 17:50:50

I would like to show this format in TexView:

• If the date is for today, I would like to show this format:

Today - 17h50

• If the date refers to yesterday, I would show this format:

Yesterday - 17h50

• And for other days:

June 5 - 17:50

How can i do this?

[UPDATE]

String dateDebut = annonce.getDate_debut();

            SimpleDateFormat inDF = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); // inputFormat
            SimpleDateFormat TodayDF = new SimpleDateFormat("HH'h'mm"); //OutputFormat For today and yesterday
            SimpleDateFormat FullDF = new SimpleDateFormat("dd MMM - HH'h'mm"); //Outputformat long

            Date inDate = null;
            try {
                inDate = inDF.parse(dateDebut);
            } catch (ParseException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            //calendar for inputday
            Calendar inCal = new GregorianCalendar();
            inCal.setTime(inDate);
            //startOfToday
            Calendar cStartOfDate = new GregorianCalendar();
            cStartOfDate.set(Calendar.HOUR, 0);
            cStartOfDate.set(Calendar.MINUTE, 0);
            cStartOfDate.set(Calendar.SECOND, 0);
            cStartOfDate.set(Calendar.MILLISECOND, 0);
            //endOfToday    
            Calendar cEndOfDate = new GregorianCalendar();
            cEndOfDate.set(Calendar.HOUR, 23);
            cEndOfDate.set(Calendar.MINUTE, 59);
            cEndOfDate.set(Calendar.SECOND, 59);

             //startOfYesterday
            Calendar cStartOfYesterday = new GregorianCalendar();
            cStartOfYesterday.set(Calendar.HOUR, 0);
            cStartOfYesterday.set(Calendar.MINUTE, 0);
            cStartOfYesterday.set(Calendar.SECOND, 0);
            cStartOfYesterday.set(Calendar.MILLISECOND, 0);

             //endOfYesterday
            Calendar cEndOfYesterday = new GregorianCalendar();
            cEndOfYesterday.set(Calendar.HOUR, 23);
            cEndOfYesterday.set(Calendar.MINUTE, 59);
            cEndOfYesterday.set(Calendar.SECOND, 59);

            if (cStartOfDate.before(inCal) && cEndOfDate.after(inCal)){
              System.out.println("Aujourd'hui - "+TodayDF.format(inDate));
              viewHolder.dateDebut.setText("Aujourd'hui - "+TodayDF.format(inDate));
            } else if (cStartOfYesterday.before(inCal) && cEndOfYesterday.after(inCal)){
              System.out.println("Hier - "+TodayDF.format(inDate));
              viewHolder.dateDebut.setText("Hier - "+TodayDF.format(inDate));
            }  else {
              System.out.println(FullDF.format(inDate));
              viewHolder.dateDebut.setText(FullDF.format(inDate));
            }

Answer 1

Try this code:

  DateFormat inDF = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); // inputFormat
    DateFormat TodayDF = new SimpleDateFormat("HH'h'mm"); //OutputFormat For today and yesterday
    DateFormat FullDF = new SimpleDateFormat("dd MMM - HH'h'mm"); //Outputformat long

    Date inDate = inDF.parse("2014-06-05 17:50:50");
    //calendar for inputday
    Calendar inCal = new GregorianCalendar();
    inCal.setTime(inDate);
    //startOfToday
    Calendar cStartOfDate = new GregorianCalendar();
    cStartOfDate.set(Calendar.HOUR_OF_DAY, 0);
    cStartOfDate.set(Calendar.MINUTE, 0);
    cStartOfDate.set(Calendar.SECOND, 0);
    cStartOfDate.set(Calendar.MILLISECOND, 0);
    //endOfToday    
    Calendar cEndOfDate = new GregorianCalendar();
    cEndOfDate.set(Calendar.HOUR_OF_DAY, 23);
    cEndOfDate.set(Calendar.MINUTE, 59);
    cEndOfDate.set(Calendar.SECOND, 59);

     //startOfYesterday
    Calendar cStartOfYesterday = new GregorianCalendar();
    cStartOfYesterday.set(Calendar.HOUR_OF_DAY, 0);
    cStartOfYesterday.set(Calendar.MINUTE, 0);
    cStartOfYesterday.set(Calendar.SECOND, 0);
    cStartOfYesterday.set(Calendar.MILLISECOND, 0);

     //endOfYesterday
    Calendar cEndOfYesterday = new GregorianCalendar();
    cEndOfYesterday.set(Calendar.HOUR_OF_DAY, 23);
    cEndOfYesterday.set(Calendar.MINUTE, 59);
    cEndOfYesterday.set(Calendar.SECOND, 59);

    if (cStartOfDate.before(inCal) && cEndOfDate.after(inCal)){
      System.out.println("Today "+TodayDF.format(inDate));
    } else if (cStartOfYesterday.before(inCal) && cEndOfYesterday.after(inCal)){
      System.out.println("Yesterday"+TodayDF.format(inDate));
    }  else {

      System.out.println(FullDF.format(inDate));
    }

Answer 2

• , ,
• :

:

Calendar cal = Calendar.getInstance();
new SimpleDateFormat("dd MMMM - HH").format(cal.getTime())+ 
"h" + new SimpleDateFormat("mm").format(cal.getTime())

Answer 3

. , .

NB: : , , , , 01/01/2015. .

private boolean checkSameDate(Calendar cal1, Calendar cal2) {
        if ((cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR)) 
                && (cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR))) {
            return true;
        }
        return false;
}

private void checkDate(Date date) {
        Calendar cal = new GregorianCalendar();
        cal.setTime(new Date());
        Calendar cal2 = new GregorianCalendar();
        cal2.setTime(date);
        cal.add(Calendar.DAY_OF_YEAR, 1);
        if (checkSameDate(cal, cal2)) {
            // Your input date is tomorrow.
        } else {
            cal.add(Calendar.DAY_OF_YEAR, -2);
            if (checkSameDate(cal, cal2)) {
                // Your input date is yesterday.
            } else {
                DateFormat sdf = new SimpleDateFormat("dd MMMM - HH:mm");
                System.out.println(sdf.format(date));
            }
        }
}

Edit

, , 31/12/-1, 01/01/. , : , ​​ 24

SimpleDateFormat, https://ideone.com/dsxKN9, , .

2

I just see what you want today , not tomorrow :). To blame! I will try to fix it, but if you understand the logic, you can do it.

Answer 4

You can use this function:

public static String convertDate(String stringDate, String oldFormat) throws ParseException {        
        SimpleDateFormat sdf = new SimpleDateFormat(oldFormat);
        Date date = sdf.parse(stringDate);
        double daysAgo = (System.currentTimeMillis() - date.getTime()) / (24 * 60 * 60 * 1000d);
        System.out.println(daysAgo);
        String newFormat;
        if (daysAgo<=0){
            newFormat="'Today -' HH'h'mm";
        }
        else if (daysAgo>=0 && daysAgo<=1){
            newFormat="'Yesterday -' HH'h'mm";
        }
        else {
            newFormat="d MMMM '-' HH'h'mm";
        }
        sdf.applyPattern(newFormat);
        return sdf.format(date);
    }

And the use will be:

String newDate = convertDate("2014-06-03 17:50:50", "yyyy-MM-dd HH:mm:ss");