根据时间戳计算年龄

 // 时间戳 --- 日期 --- Date --- 年龄
     
     
          /**
     * 调用此方法输入所要转换的时间戳输入例如（1402733340）输出（"2014-06-14  16:09:00"）
     *
     * @param time
     * @return
     */
          public static String timedate(String time) {
        SimpleDateFormat sdr = new SimpleDateFormat("yyyy-MM-dd HH:mm");
        @SuppressWarnings("unused")
        long lcc = Long.valueOf(time);
        int i = Integer.parseInt(time);
        String times = sdr.format(new Date(i * 1000L));
        return times;

    }
               /**
     * 调用此方法输入所要转换的字符串输入例如"2014-06-14  16:09:00"输出Date类型的数据
     *
     * @param time
     * @return
     */
       public static Date getDate(String time){
        SimpleDateFormat sdr = new SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.CHINA);
        Date date = null;
        try {
            date = sdr.parse(time);
        } catch (ParseException e) {
            e.printStackTrace();
        }

        return date;
    }
   
    /**
     * 根据用户生日Date数据计算年龄
     */
    public static int getAgeByBirthday(Date birthday) {
        Calendar cal = Calendar.getInstance();

        if (cal.before(birthday)) {
            throw new IllegalArgumentException(
                    "The birthDay is before Now.It's unbelievable!");
        }

        int yearNow = cal.get(Calendar.YEAR);
        int monthNow = cal.get(Calendar.MONTH) + 1;
        int dayOfMonthNow = cal.get(Calendar.DAY_OF_MONTH);

        cal.setTime(birthday);
        int yearBirth = cal.get(Calendar.YEAR);
        int monthBirth = cal.get(Calendar.MONTH) + 1;
        int dayOfMonthBirth = cal.get(Calendar.DAY_OF_MONTH);

        int age = yearNow - yearBirth;

        if (monthNow <= monthBirth) {
            if (monthNow == monthBirth) {
                // monthNow==monthBirth
                if (dayOfMonthNow < dayOfMonthBirth) {
                    age--;
                }
            } else {
                // monthNow>monthBirth
                age--;
            }
        }
        return age;
    }