计算一周区间段

private String[] getDateArrByWeek(Date startDate, Date endDate) {

　　Calendar c = Calendar.getInstance();

　　  List<String> list = new ArrayList<String>();

SimpleDateFormat df = new SimpleDateFormat("YYYY年MM月dd日");

for (; startDate.getTime() <= endDate.getTime();) {

String _startDate = df.format(startDate);

c.setTime(startDate);

c.add(Calendar.WEEK_OF_MONTH, 1);

startDate = c.getTime();

String _endDate = df.format(startDate);

c.setTime(startDate);

c.add(Calendar.DATE, -1);

_endDate = df.format(c.getTime());

list.add(_startDate+"-"+_endDate);

}

String[] ret = new String[list.size()];

for (int i = 0; i < list.size(); i++) {

ret[i] = list.get(i);

}

return ret;  }