Android Days Between Two Dates

Android calculate days between two dates

Your code for generating date object:

Date date = new Date("2/3/2017"); //deprecated

You are getting 28 days as answer because according to Date(String) constructor it is thinking day = 3,month = 2 and year = 2017

You can convert String to Date as follows:

String dateStr = "2/3/2017";
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
Date date = sdf.parse(dateStr);

Use above template to make your Date object. Then use below code for calculating days in between two dates. Hope this clear the thing.

It can de done as follows:

long diff = endDateValue.getTime() - startDateValue.getTime();
System.out.println ("Days: " + TimeUnit.DAYS.convert(diff, TimeUnit.MILLISECONDS));

Please check link

If you use Joda Time it is much more simple:

int days = Days.daysBetween(date1, date2).getDays();

Please check JodaTime

How to use JodaTime in Java Project

Android Days between two dates

Please refer this code, this may help you.

public String getCountOfDays(String createdDateString, String expireDateString) {
    SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy", Locale.getDefault());

    Date createdConvertedDate = null, expireCovertedDate = null, todayWithZeroTime = null;
    try {
        createdConvertedDate = dateFormat.parse(createdDateString);
        expireCovertedDate = dateFormat.parse(expireDateString);

        Date today = new Date();

        todayWithZeroTime = dateFormat.parse(dateFormat.format(today));
    } catch (ParseException e) {
        e.printStackTrace();
    }

    int cYear = 0, cMonth = 0, cDay = 0;

    if (createdConvertedDate.after(todayWithZeroTime)) {
        Calendar cCal = Calendar.getInstance();
        cCal.setTime(createdConvertedDate);
        cYear = cCal.get(Calendar.YEAR);
        cMonth = cCal.get(Calendar.MONTH);
        cDay = cCal.get(Calendar.DAY_OF_MONTH);

    } else {
        Calendar cCal = Calendar.getInstance();
        cCal.setTime(todayWithZeroTime);
        cYear = cCal.get(Calendar.YEAR);
        cMonth = cCal.get(Calendar.MONTH);
        cDay = cCal.get(Calendar.DAY_OF_MONTH);
    }

    /*Calendar todayCal = Calendar.getInstance();
    int todayYear = todayCal.get(Calendar.YEAR);
    int today = todayCal.get(Calendar.MONTH);
    int todayDay = todayCal.get(Calendar.DAY_OF_MONTH);
    */

    Calendar eCal = Calendar.getInstance();
    eCal.setTime(expireCovertedDate);

    int eYear = eCal.get(Calendar.YEAR);
    int eMonth = eCal.get(Calendar.MONTH);
    int eDay = eCal.get(Calendar.DAY_OF_MONTH);

    Calendar date1 = Calendar.getInstance();
    Calendar date2 = Calendar.getInstance();

    date1.clear();
    date1.set(cYear, cMonth, cDay);
    date2.clear();
    date2.set(eYear, eMonth, eDay);

    long diff = date2.getTimeInMillis() - date1.getTimeInMillis();

    float dayCount = (float) diff / (24 * 60 * 60 * 1000);

    return ("" + (int) dayCount + " Days");
}

How to calculate number of days between two datepicker in android and display in the edit text

public class ResourceActivity extends AppCompatActivity {

    EditText date,dateto,days;
    DatePickerDialog datePickerDialog;
    Button save_btn;
    Calendar c1,c2;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate (savedInstanceState);
        setContentView (R.layout.activity_resource);

        date = findViewById (R.id.date);
        dateto = findViewById (R.id.dateto);
        days = findViewById (R.id.days);
        save_btn = findViewById (R.id.save_btn);

        save_btn.setOnClickListener (new View.OnClickListener ( ) {
            @Override
            public void onClick(View view) {

              //  loadsave();
                try {
                    String d1 = date.getText ().toString ();
                    String d2 = dateto.getText ().toString ();

                    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd-MMM-yyyy");
                    Date date1 = simpleDateFormat.parse(d1);
                    Date date2 = simpleDateFormat.parse(d2);
                    long difference = Math.abs(date1.getTime() - date2.getTime());

                    long difftDays = difference / (24 * 60 * 60 * 1000);

                    Log.i("Testing","days" +difftDays);
                    days.setText("days" +difftDays);

                }
                catch(Exception ex)
                {

                    ex.printStackTrace();
                }
            }
        });

        date.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // calender class's instance and get current date , month and year from calender
                c1 = Calendar.getInstance();
                int mYear = c1.get(Calendar.YEAR); // current year
                int mMonth = c1.get(Calendar.MONTH); // current month
                int mDay = c1.get(Calendar.DAY_OF_MONTH); // current day
                // date picker dialog
                datePickerDialog = new DatePickerDialog(ResourceActivity.this,new DatePickerDialog.OnDateSetListener() {

                    @Override
                    public void onDateSet(DatePicker view, int year,
                                          int monthOfYear, int dayOfMonth) {

                        // set day of month , month and year value in the edit text

                        String[] MONTHS = {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};
                        String mon=MONTHS[monthOfYear];

                        date.setText(dayOfMonth + "-"
                                + (mon) + "-" + year);

                    }
                }, mYear, mMonth, mDay);
                datePickerDialog.show();
            }
        });

        dateto.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // calender class's instance and get current date , month and year from calender
                c2 = Calendar.getInstance();
                int mYear = c2.get(Calendar.YEAR); // current year
                int mMonth = c2.get(Calendar.MONTH); // current month
                int mDay = c2.get(Calendar.DAY_OF_MONTH); // current day
                // date picker dialog
                datePickerDialog = new DatePickerDialog(ResourceActivity.this, new DatePickerDialog.OnDateSetListener() {

                    @Override
                    public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
                        // set day of month , month and year value in the edit text
                        String[] MONTHS = {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};
                        String mon=MONTHS[monthOfYear];
                        dateto.setText(dayOfMonth + "-" + (mon) + "-" + year);

                    }
                }, mYear, mMonth, mDay);
                datePickerDialog.show();
            }
        });

    }
}

android diff days between two dates

Try this

public static long printDifference(Date startDate, Date endDate){

    //milliseconds
    long different = endDate.getTime() - startDate.getTime();

    long secondsInMilli = 1000;
    long minutesInMilli = secondsInMilli * 60;
    long hoursInMilli = minutesInMilli * 60;
    long daysInMilli = hoursInMilli * 24;

    long elapsedDays = different / daysInMilli;
    different = different % daysInMilli;

    long elapsedHours = different / hoursInMilli;
    different = different % hoursInMilli;

    long elapsedMinutes = different / minutesInMilli;
    different = different % minutesInMilli;

    long elapsedSeconds = different / secondsInMilli;

    return elapsedDays;
}

how to calculate number of days between two dates entered by user through datepicker in android studio

To get Date difference in days first you need to subtract date_to with date_from
like this -

long difference = Math.abs(date_to.getTime() - date_from.getTime());  

Then you can get Days difference with below given formula -

int days = (int) (difference / (1000 * 60 * 60 * 24)); 

Android difference between Two Dates

DateTimeUtils obj = new DateTimeUtils();
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/M/yyyy hh:mm:ss");

try {
    Date date1 = simpleDateFormat.parse("10/10/2013 11:30:10");
    Date date2 = simpleDateFormat.parse("13/10/2013 20:35:55");

    obj.printDifference(date1, date2);

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

//1 minute = 60 seconds
//1 hour = 60 x 60 = 3600
//1 day = 3600 x 24 = 86400
public void printDifference(Date startDate, Date endDate) { 
    //milliseconds
    long different = endDate.getTime() - startDate.getTime();

    System.out.println("startDate : " + startDate);
    System.out.println("endDate : "+ endDate);
    System.out.println("different : " + different);

    long secondsInMilli = 1000;
    long minutesInMilli = secondsInMilli * 60;
    long hoursInMilli = minutesInMilli * 60;
    long daysInMilli = hoursInMilli * 24;

    long elapsedDays = different / daysInMilli;
    different = different % daysInMilli;

    long elapsedHours = different / hoursInMilli;
    different = different % hoursInMilli;

    long elapsedMinutes = different / minutesInMilli;
    different = different % minutesInMilli;

    long elapsedSeconds = different / secondsInMilli;

    System.out.printf(
        "%d days, %d hours, %d minutes, %d seconds%n", 
        elapsedDays, elapsedHours, elapsedMinutes, elapsedSeconds);
}

out put is :

startDate : Thu Oct 10 11:30:10 SGT 2013
endDate : Sun Oct 13 20:35:55 SGT 2013
different : 291945000
3 days, 9 hours, 5 minutes, 45 seconds

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