how to get week of the year using input date from user

Question

How to get current week of the year using date? Below code returns current week of the year using current time. How do I change this code to take input date like 26/8/2013?(in this caseit should return 35). I want to implement by taking input date form user then return current week of the year.

Calendar calender = Calendar.getInstance();
Log.d("Current Week:", "" + calender.get(Calendar.WEEK_OF_YEAR));
Toast.makeText(this, "current year weeks is"+ calender.get(Calendar.WEEK_OF_YEAR),   
Toast.LENGTH_SHORT).show();

possible duplicate of [how to get total number of week in the current year](http://stackoverflow.com/questions/18438332/how-to-get-total-number-of-week-in-the-current-year) — Pankaj Kumar, Aug 26 '13 at 08:33

Caner · Accepted Answer · 2013-08-27T07:25:52.870

0

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import android.net.ParseException;
import android.widget.Toast;

...

/**
* @Param userInput Input date from user, format: "26/8/2013"
*/
public void getDayOfWeek(String userInput) {
    Date date;
    SimpleDateFormat format = new SimpleDateFormat("dd/M/yyyy");  
    try {  
        date = format.parse(userInput);
    } catch (ParseException e) {  
        e.printStackTrace();  
    }

    Calendar calender = new GregorianCalendar();
    calender.setTime(date);
    Toast.makeText(this, "current year weeks is" + calender.get(Calendar.WEEK_OF_YEAR), Toast.LENGTH_SHORT).show(); 
}

edited Aug 27 '13 at 07:25

answered Aug 26 '13 at 07:50

Caner

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@NicolasTyler S/he wants to get date from user input string, so I would be happy to see how it could be done with less code. – Caner Aug 26 '13 at 07:57
@user2706686 I changed it a bit, try again with new code. And which line produces null pointer exception? – Caner Aug 26 '13 at 08:01
calender.setTime(date); date is null and also so many import options are found which which import are used? – user2706686 Aug 26 '13 at 08:05
ParseException give option for 3 import android.net java.text org.apache.http – user2706686 Aug 26 '13 at 08:06
how to make ur code dynamically?s o call any where just give input like this manner calendercurrentweek(currentfdate); and call function how tomake ur code like that?? – user2706686 Aug 26 '13 at 08:09
Added imports. You need to get the input from user and set `String dtStart = ...` – Caner Aug 26 '13 at 08:13
how to make ur function dynamically access from anywhere just give input to function like this manner calendercurrentweek(currentdate); – user2706686 Aug 26 '13 at 08:14
how to access ur function dynamically like this way int currentWeekno = getcurrentweeknoInYear(5/9/2013); – user2706686 Aug 26 '13 at 08:16

how to get week of the year using input date from user

1 Answers1