Question

I have a program where it relies heavily on identifying the week number for the year. I have done the leg work and figured out all the problems that will cause and settle with this method. I works perfect for years that have 53 weeks and such. My only issue is that when I run it on my emulator for 2.2 it works perfect, like this is week 19 and its correct. when I run it on my phone a G1, the week shows 20. How do I fix this?

Here is my week code:

/**
 * Format the date into a number that is the year*100 plus the week i.e. 2008 and its week 11
 * would show as 811
 * @param - String of a date to create a week id, must be in format of 2011-01-31 (YYYY-MM-DD)
 * @return returns next weeks id
 */
public static int getWeekId(String date){

    // Set the first day of week to Monday and set the starting new year weeks
    // as a full first week in the new year.
    Calendar c = Calendar.getInstance();
    c.setFirstDayOfWeek(Calendar.MONDAY);
    c.setMinimalDaysInFirstWeek(7);

    if (!date.equalsIgnoreCase("")) {
        String[] token = date.split("-", 3);
        int year = Integer.parseInt(token[0]);
        int month = Integer.parseInt(token[1])-1; // months are 0-11 stupid..
        int day = Integer.parseInt(token[2]);
        c.set(year, month, day);
    }


    int yearWeek = ( (c.get(Calendar.YEAR) - 2000)*100 + (c.get(Calendar.WEEK_OF_YEAR)));

    Log.d("getWeekId()"," WEEK_OF_YEAR: " + c.get(Calendar.WEEK_OF_YEAR));

    return yearWeek;

}

Answer 1

(I’d leave this in a comment, but my account does not yet have commenting permissions.)

When called with 2011-01-01, the code currently returns 1152. Is this as intended?