获取 Android 中给定周数的日期

Question

我想获取给定周数的日期。例如，如果我的周数为 15，我需要获取日期：05-04-2015、06-04-2015、07-04-2015、08-04-2015、09-04 -2015 年、2015 年 4 月 10 日、2015 年 4 月 11 日。

这可能吗？如果是这样，如何？

告诉我，

谢谢！

Answer 1

public static void main(String[] args) {

// set the date
Calendar cal = Calendar.getInstance();
cal.set(2011, 10 - 1, 12);

// "calculate" the start date of the week
Calendar first = (Calendar) cal.clone();
first.add(Calendar.DAY_OF_WEEK, 
          first.getFirstDayOfWeek() - first.get(Calendar.DAY_OF_WEEK));

// and add six days to the end date
Calendar last = (Calendar) first.clone();
last.add(Calendar.DAY_OF_YEAR, 6);

// print the result
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
System.out.println(df.format(first.getTime()) + " -> " + 
                   df.format(last.getTime()));

}

Answer 2

int yourYear = 1997;

Calendar c1 = Calendar.getInstance();
SimpleDateFormat format1 = new SimpleDateFormat("yyyy-MM-dd");
c1.set(yourYear, 1, 1);
c1.add(Calendar.DATE, WEEK*7); 
for (int i = 0, i < 7; i++){
 String formatted = format1.format(cal.getTime());
 System.out.println(formatted);
 c1.add(Calendar.DATE, 1);
}

Answer 3

这是我的解决方案：

    Calendar c = new GregorianCalendar(Locale.getDefault());
    c.set(Calendar.WEEK_OF_YEAR, 15);
    c.set(Calendar.YEAR, 2015);

    String result = "";

    int firstDayOfWeek = c.getFirstDayOfWeek();
    for (int i = firstDayOfWeek; i < firstDayOfWeek + 7; i++) {
        c.set(Calendar.DAY_OF_WEEK, i);
        result += new SimpleDateFormat("yyyy.MM.dd").format(c.getTime()) + "\n";
    }

作为输入，除了星期，你需要有一年。请注意一周的第一天取决于 Locale。

获取 Android 中给定周数的日期

Get dates for a given week number in Android

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android-calendar