根据本周开始得到一个月的周 [英] Get weeks of the month depending on week start

问题描述

我是用我的应用程序自定义日历。我已经给了用户选项选择可能是一周的第一天：周六，周日，周一

我想在一个月的周数 - 这取决于当周开始，每周覆盖启动的默认值 - 周日。

code：

 公众诠释getWeeksOfMonth（INT年，月整型）{
    台历挂历= Calendar.getInstance（）;
    calendar.set（的Calendar.MONTH，月-1）;
    calendar.set（Calendar.YEAR，年）;
    INT numOfWeeksInMonth = calendar.getActualMaximum（Calendar.WEEK_OF_MONTH）;    返回numOfWeeksInMonth;
}
 

解决方案

尝试

  calendar.setFirstDayOfWeek（Calendar.MONDAY）; //设置首日星期一，例如。
 

在你的情况你可能想做到这一点：

 公众诠释getWeeksOfMonth（INT年，月整型，诠释weekStart）{
    台历挂历= Calendar.getInstance（）;
    calendar.set（的Calendar.MONTH，月-1）;
    calendar.set（Calendar.YEAR，年）;
    calendar.setFirstDayOfWeek（weekStart）;
    INT numOfWeeksInMonth = calendar.getActualMaximum（Calendar.WEEK_OF_MONTH）;    返回numOfWeeksInMonth;
}
 

和调用与行中的方法，如

  INT周= getWeeksOfMonth（2012，5，Calendar.WEDNESDAY）;
 

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;
}

解决方案

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);

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