Question

I am using a custom calendar in my app. I have given the users option to select the first day of the week which could be: Saturday, Sunday, Monday

I want to get the number of weeks in a month – depending on when the week starts, overriding the default value of week start – Sunday.

Code:

public int getWeeksOfMonth(int year, int month) { 
    Calendar calendar = Calendar.getInstance(); 
    calendar.set(Calendar.MONTH, month-1);
    calendar.set(Calendar.YEAR, year);
    int numOfWeeksInMonth = calendar.getActualMaximum(Calendar.WEEK_OF_MONTH); 

    return numOfWeeksInMonth;
}

Answer 1

Try

calendar.setFirstDayOfWeek(Calendar.MONDAY); //sets first day to monday, for example.

In your case you might want to do this:

public int getWeeksOfMonth(int year, int month, int weekStart) { 
    Calendar calendar = Calendar.getInstance();  
    calendar.set(Calendar.MONTH, month-1);
    calendar.set(Calendar.YEAR, year);
    calendar.setFirstDayOfWeek(weekStart);
    int numOfWeeksInMonth = calendar.getActualMaximum(Calendar.WEEK_OF_MONTH); 

    return numOfWeeksInMonth;
}

And call the method with a line such as

int weeks = getWeeksOfMonth(2012, 5, Calendar.WEDNESDAY);