通过所给日期判断是前天、昨天、今天、明天、后天，其他日期返回是星期几。

/**

* 将日期信息转换成今天、明天、后天、星期

* @param date

* @return

*/

public static String getDateDetail(String date){

Calendar today = Calendar.getInstance();

Calendar target = Calendar.getInstance();

DateFormat df = new SimpleDateFormat(Config.DATE_FORMAT);

try {

today.setTime(df.parse(getNowDateToStr()));

today.set(Calendar.HOUR, 0);

today.set(Calendar.MINUTE, 0);

today.set(Calendar.SECOND, 0);

target.setTime(df.parse(date));

target.set(Calendar.HOUR, 0);

target.set(Calendar.MINUTE, 0);

target.set(Calendar.SECOND, 0);

} catch (ParseException e) {

// TODO Auto-generated catch block

e.printStackTrace();

return null;

}

long intervalMilli = target.getTimeInMillis() - today.getTimeInMillis();

int xcts = (int) (intervalMilli / (24 * 60 * 60 * 1000));

return showDateDetail(xcts,target);

}

/**

* 将日期差显示为日期或者星期

* @param xcts

* @param target

* @return

*/

private static String showDateDetail(int xcts, Calendar target){

switch(xcts){

case 0:

return Constants.TODAY;

case 1:

return Constants.TOMORROW;

case 2:

return Constants.AFTER_TOMORROW;

case -1:

return Constants.YESTERDAY;

case -2:

return Constants.BEFORE_YESTERDAY;

default:

int dayForWeek = 0;

dayForWeek = target.get(Calendar.DAY_OF_WEEK);

switch(dayForWeek){

case 1: return Constants.SUNDAY;

case 2: return Constants.MONDAY;

case 3: return Constants.TUESDAY;

case 4: return Constants.WEDNESDAY;

case 5: return Constants.THURSDAY;

case 6: return Constants.FRIDAY;

case 7: return Constants.SATURDAY;

default:return null;

}

}

}

需要增加常量：Constant.java

/**   * 日期   */  public static final String TODAY = "今天";  public static final String YESTERDAY = "昨天";  public static final String TOMORROW = "明天";  public static final String BEFORE_YESTERDAY = "前天";  public static final String AFTER_TOMORROW = "后天";  public static final String SUNDAY = "星期日";  public static final String MONDAY = "星期一";  public static final String TUESDAY = "星期二";  public static final String WEDNESDAY = "星期三";  public static final String THURSDAY = "星期四";  public static final String FRIDAY = "星期五";  public static final String SATURDAY = "星期六";