根据当期日期计算星期几

Question

根据日期获取当前的星期数字，比如2013.05.07，星期二。

应该怎么实现？

Sunday 05.05.2013
Monday 06.05.2013
*Tuesday 07.05.2013
Wednesday 08.05.2013
Thursday 09.05.2013
Friday 10.05.2013
Saturday 11.05.2013

Answer 1

Calendar cal = Calendar.getInstance();
cal.set(Calendar.DAY_OF_WEEK, cal.getFirstDayOfWeek());
SimpleDateFormat sdf = new SimpleDateFormat("EEEE dd.MM.yyyy");

for (int i = 0; i < 7; i++) {
    Log.i("dateTag", sdf.format(cal.getTime()));
    cal.add(Calendar.DAY_OF_WEEK, 1);
}