android开发时间和日期的代码实现工具类(一)

android开发时间和日期工具类的代码实现:

 package com.gzcivil.utils;

 import android.annotation.SuppressLint;
 import android.util.Log;

 import java.text.DateFormat;
 import java.text.ParseException;
 import java.text.ParsePosition;
 import java.text.SimpleDateFormat;
 import java.util.Calendar;
 import java.util.Date;

 /**
  * @see 时间、日期工具类
  * @author Chenxy
  * @date 2015-12-16 10:40
  */
 public class DateUtil {

     static SimpleDateFormat format;

     /** 日期格式：yyyy-MM-dd HH:mm:ss **/
     public static final String DF_YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

     /** 日期格式：yyyy-MM-dd HH:mm **/
     public static final String DF_YYYY_MM_DD_HH_MM = "yyyy-MM-dd HH:mm";

     /** 日期格式：yyyy-MM-dd **/
     public static final String DF_YYYY_MM_DD = "yyyy-MM-dd";

     /** 日期格式：HH:mm:ss **/
     public static final String DF_HH_MM_SS = "HH:mm:ss";

     /** 日期格式：HH:mm **/
     public static final String DF_HH_MM = "HH:mm";

     private final static long minute = 60 * 1000;// 1分钟
     private final static long hour = 60 * minute;// 1小时
     private final static long day = 24 * hour;// 1天
     private final static long month = 31 * day;// 月
     private final static long year = 12 * month;// 年

     /** Log输出标识 **/
     private static final String TAG = DateUtil.class.getSimpleName();

     public DateUtil() {

     }

     /**
      * 将日期格式化成友好的字符串：几分钟前、几小时前、几天前、几月前、几年前、刚刚
      *
      * @param date
      * @return
      */
     public static String formatFriendly(Date date) {
         if (date == null) {
             return null;
         }
         long diff = new Date().getTime() - date.getTime();
         long r = 0;
         if (diff > year) {
             r = (diff / year);
             return r + "年前";
         }
         if (diff > month) {
             r = (diff / month);
             return r + "个月前";
         }
         if (diff > day) {
             r = (diff / day);
             return r + "天前";
         }
         if (diff > hour) {
             r = (diff / hour);
             return r + "个小时前";
         }
         if (diff > minute) {
             r = (diff / minute);
             return r + "分钟前";
         }
         return "刚刚";
     }

     /**
      * 将日期以yyyy-MM-dd HH:mm:ss格式化
      *
      * @param dateL
      *            日期
      * @return
      */
     @SuppressLint("SimpleDateFormat")
     public static String formatDateTime(long dateL) {
         SimpleDateFormat sdf = new SimpleDateFormat(DF_YYYY_MM_DD_HH_MM_SS);
         Date date = new Date(dateL);
         return sdf.format(date);
     }

     /**
      * 将日期以yyyy-MM-dd HH:mm:ss格式化
      *
      * @param dateL
      *            日期
      * @return
      */
     @SuppressLint("SimpleDateFormat")
     public static String formatDateTime(long dateL, String formater) {
         SimpleDateFormat sdf = new SimpleDateFormat(formater);
         return sdf.format(new Date(dateL));
     }

     /**
      * 将日期以yyyy-MM-dd HH:mm:ss格式化
      *
      * @param dateL
      *            日期
      * @return
      */
     @SuppressLint("SimpleDateFormat")
     public static String formatDateTime(Date date, String formater) {
         SimpleDateFormat sdf = new SimpleDateFormat(formater);
         return sdf.format(date);
     }

     /**
      * 将日期字符串转成日期
      *
      * @param strDate
      *            字符串日期
      * @return java.util.date日期类型
      */
     @SuppressLint("SimpleDateFormat")
     public static Date parseDate(String strDate) {
         DateFormat dateFormat = new SimpleDateFormat(DF_YYYY_MM_DD_HH_MM_SS);
         Date returnDate = null;
         try {
             returnDate = dateFormat.parse(strDate);
         } catch (ParseException e) {
             Log.v(TAG, "parseDate failed !");

         }
         return returnDate;

     }

     /**
      * 获取系统当前日期
      *
      * @return
      */
     public static Date gainCurrentDate() {
         return new Date();
     }

     /**
      * 验证日期是否比当前日期早
      *
      * @param target1
      *            比较时间1
      * @param target2
      *            比较时间2
      * @return true 则代表target1比target2晚或等于target2，否则比target2早
      */
     public static boolean compareDate(Date target1, Date target2) {
         boolean flag = false;
         try {
             String target1DateTime = formatDateTime(target1, DF_YYYY_MM_DD_HH_MM_SS);
             String target2DateTime = formatDateTime(target2, DF_YYYY_MM_DD_HH_MM_SS);
             if (target1DateTime.compareTo(target2DateTime) <= 0) {
                 flag = true;
             }
         } catch (Exception e) {
             System.out.println("比较失败，原因：" + e.getMessage());
         }
         return flag;
     }

     /**
      * 对日期进行增加操作
      *
      * @param target
      *            需要进行运算的日期
      * @param hour
      *            小时
      * @return
      */
     public static Date addDateTime(Date target, double hour) {
         if (null == target || hour < 0) {
             return target;
         }

         return new Date(target.getTime() + (long) (hour * 60 * 60 * 1000));
     }

     /**
      * 对日期进行相减操作
      *
      * @param target
      *            需要进行运算的日期
      * @param hour
      *            小时
      * @return
      */
     public static Date subDateTime(Date target, double hour) {
         if (null == target || hour < 0) {
             return target;
         }

         return new Date(target.getTime() - (long) (hour * 60 * 60 * 1000));
     }

     /** 获取系统时间的方法:月/日 时:分:秒 */
     public static String getFormateDate() {
         Calendar calendar = Calendar.getInstance();
         int month = (calendar.get(Calendar.MONTH) + 1);
         int day = calendar.get(Calendar.DAY_OF_MONTH);
         int hour = calendar.get(Calendar.HOUR_OF_DAY);
         int minute = calendar.get(Calendar.MINUTE);
         int second = calendar.get(Calendar.SECOND);

         String systemTime = (month < 10 ? "0" + month : month) + "/" + (day < 10 ? "0" + day : day) + "  " + (hour < 10 ? "0" + hour : hour) + ":" + (minute < 10 ? "0" + minute : minute) + ":" + (second < 10 ? "0" + second : second);
         return systemTime;
     }

     /** 获取系统时间的方法:时:分:秒 */
     public static String getHourAndMinute() {
         Calendar calendar = Calendar.getInstance();
         int hour = calendar.get(Calendar.HOUR_OF_DAY);
         int minute = calendar.get(Calendar.MINUTE);
         return (hour < 10 ? "0" + hour : hour) + ":" + (minute < 10 ? "0" + minute : minute);
     }

     /** 获取系统时间的方法:时 */
     public static String getHour() {
         Calendar calendar = Calendar.getInstance();
         int hour = calendar.get(Calendar.HOUR_OF_DAY);
         return ((hour < 10 ? "0" + hour : hour) + "");
     }

     /**
      * 将2014-09-10 00:00:00 换2014-09-10
      *
      * @param strDate
      * @return
      */
     public static String strFormatStr(String strDate) {
         if (strDate.equals("")) {
             return "";
         }
         return dateToStr(strToDate(strDate));
     }

     /**
      * 2015-01-07 15:05:34
      *
      * @param strDate
      * @return
      */
     @SuppressLint("SimpleDateFormat")
     public static Date strToDateHHMMSS(String strDate) {
         SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         ParsePosition pos = new ParsePosition(0);
         Date strtodate = formatter.parse(strDate, pos);
         return strtodate;
     }

     /**
      * 2015-01-07
      *
      * @param strDate
      * @return
      */
     @SuppressLint("SimpleDateFormat")
     public static Date strToDate(String strDate) {
         SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
         ParsePosition pos = new ParsePosition(0);
         Date strtodate = formatter.parse(strDate, pos);
         return strtodate;
     }

     /**
      * 2015.01.07
      *
      * @param strDate
      * @return
      */
     @SuppressLint("SimpleDateFormat")
     public static Date strToDateDorp(String strDate) {
         SimpleDateFormat formatter = new SimpleDateFormat("yyyy.MM.dd");
         ParsePosition pos = new ParsePosition(0);
         Date strtodate = formatter.parse(strDate, pos);
         return strtodate;
     }

     @SuppressLint("SimpleDateFormat")
     public static String dateToStr(java.util.Date dateDate) {
         SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
         String dateString = formatter.format(dateDate);
         return dateString;
     }

     /** 传入一个String转化为long */
     @SuppressLint("SimpleDateFormat")
     public static Long stringParserLong(String param) throws ParseException {
         format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         return format.parse(param).getTime();
     }

     /** 当前时间转换为long */
     @SuppressLint("SimpleDateFormat")
     public static Long currentDateParserLong() throws ParseException {
         format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         return format.parse(format.format(Calendar.getInstance().getTime())).getTime();
     }

     /** 当前时间 如: 2013-04-22 10:37:00 */
     @SuppressLint("SimpleDateFormat")
     public static String getCurrentDate() {
         format = new SimpleDateFormat("yyyy-MM-dd HH:mm");
         return format.format(Calendar.getInstance().getTime());
     }

     /** 当前时间 如: 10:37 */
     @SuppressLint("SimpleDateFormat")
     public static String getCurrentDateHHMM() {
         format = new SimpleDateFormat("HH:mm");
         return format.format(Calendar.getInstance().getTime());
     }

     /**
      * 当前时间 如: 10:37
      *
      * @throws ParseException
      */
     @SuppressLint("SimpleDateFormat")
     public static String getCurrentDateHHMMSS() {
         format = new SimpleDateFormat("HH:mm:ss");
         return format.format(Calendar.getInstance().getTime());
     }

     /** 当前时间 如: 20130422 */
     @SuppressLint("SimpleDateFormat")
     public static String getCurrentDateString() {
         format = new SimpleDateFormat("yyyyMMddHHmm");
         return format.format(Calendar.getInstance().getTime());
     }

     /** 当前时间 如: 2013-04-22 */
     @SuppressLint("SimpleDateFormat")
     public static String getCurrentTime() {
         format = new SimpleDateFormat("yyyy-MM-dd");
         return format.format(Calendar.getInstance().getTime());
     }

     @SuppressLint("SimpleDateFormat")
     public static String getSWAHDate() {
         SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         return format.format(Calendar.getInstance().getTime());
     }

     @SuppressLint("SimpleDateFormat")
     public static Long stringToLongD(String param) throws ParseException {
         SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
         return format.parse(param.substring(0, param.length() - 4)).getTime();
     }

     @SuppressLint("SimpleDateFormat")
     public static Long stringToLong(String param) throws ParseException {
         SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmm");
         return format.parse(param).getTime();
     }

     /**
      * 获取两个日期之间的间隔天数
      *
      * @return
      */
     @SuppressLint("SimpleDateFormat")
     public static int getGapCount(Date startDate, Date endDate) {
         Calendar fromCalendar = Calendar.getInstance();
         fromCalendar.setTime(startDate);
         fromCalendar.set(Calendar.HOUR_OF_DAY, 0);
         fromCalendar.set(Calendar.MINUTE, 0);
         fromCalendar.set(Calendar.SECOND, 0);
         fromCalendar.set(Calendar.MILLISECOND, 0);

         Calendar toCalendar = Calendar.getInstance();
         toCalendar.setTime(endDate);
         toCalendar.set(Calendar.HOUR_OF_DAY, 0);
         toCalendar.set(Calendar.MINUTE, 0);
         toCalendar.set(Calendar.SECOND, 0);
         toCalendar.set(Calendar.MILLISECOND, 0);

         return (int) ((toCalendar.getTime().getTime() - fromCalendar.getTime().getTime()) / (1000 * 60 * 60 * 24));
     }

     /**
      * 日期转换成Java字符串
      *
      * @param date
      * @return str
      */
     @SuppressLint("SimpleDateFormat")
     public static String DateToStr(Date date) {

         SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         String str = format.format(date);
         return str;
     }

     /**
      * 字符串转换成日期
      *
      * @param str
      * @return date
      */
     @SuppressLint("SimpleDateFormat")
     public static Date StrToDate(String str) {

         SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
         Date date = null;
         try {
             date = format.parse(str);
         } catch (ParseException e) {
             e.printStackTrace();
         }
         return date;
     }

     /**
      * 字符串转换成日期
      *
      * @param str
      * @return date
      */
     @SuppressLint("SimpleDateFormat")
     public static Date StrToDateDrop(String str) {

         SimpleDateFormat format = new SimpleDateFormat("yyyy.MM.dd");
         Date date = null;
         try {
             date = format.parse(str);
         } catch (ParseException e) {
             e.printStackTrace();
         }
         return date;
     }

     /**
      *
      * @param time
      * @return
      */
     @SuppressLint("SimpleDateFormat")
     public static long getLongTime(String time) {
         long ct = 0;
         try {
             format = new SimpleDateFormat("HH:mm:ss");
             ct = format.parse(time).getTime();
         } catch (Exception e) {
             e.printStackTrace();
         }
         return ct;
     }

     /**
      * 判断两日期是否同一天
      *
      * @param str1
      * @param str2
      * @return
      */
     @SuppressLint("SimpleDateFormat")
     public static boolean isSameDay(String str1, String str2) {

         Date day1 = null, day2 = null;
         day1 = DateUtil.strToDate(str1);
         day2 = DateUtil.strToDate(str2);

         SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

         String ds1 = sdf.format(day1);

         String ds2 = sdf.format(day2);

         if (ds1.equals(ds2)) {
             return true;
         } else {
             return false;
         }

     }

     /**
      * 获取两个日期的时间差
      */
     @SuppressLint("SimpleDateFormat")
     public static int getTimeInterval(String date) {
         SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         int interval = 0;
         try {
             Date currentTime = new Date();// 获取现在的时间
             Date beginTime = dateFormat.parse(date);
             interval = (int) ((beginTime.getTime() - currentTime.getTime()) / (1000));// 时间差
                                                                                         // 单位秒
         } catch (ParseException e) {
             e.printStackTrace();
         }
         return interval;
     }

     /**
      * 获取两个日期的时间差 yyyy.MM.dd HH.mm.ss
      */
     @SuppressLint("SimpleDateFormat")
     public static int getInterval(String bDate, String eDate) {
         SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy.MM.dd");
         int interval = 0;
         try {
             Date currentTime = dateFormat.parse(eDate);// 获取现在的时间
             Date beginTime = dateFormat.parse(bDate);
             interval = (int) ((beginTime.getTime() - currentTime.getTime()));// 时间差
                                                                                 // 单位秒
         } catch (ParseException e) {
             e.printStackTrace();
         }
         return interval;
     }

     /**
      * 两个时间之差 求出一个long Time
      *
      * @param dt1
      * @param dt2
      * @return
      */
     @SuppressLint("SimpleDateFormat")
     public static long getTime(String date) {

         DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
         long diff = 0;
         try {
             Date currentTime = new Date();// 获取现在的时间
             Date getdate = df.parse(date);
             diff = getdate.getTime() - currentTime.getTime();

         } catch (Exception e) {
         }
         return diff;
     }

     /**
      * 日期转换成Java字符串
      *
      * @param date
      * @return str
      */
     @SuppressLint("SimpleDateFormat")
     public static int compare_date(String DATE1, String DATE2) {
         DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
         try {
             Date dt1 = df.parse(DATE1);
             Date dt2 = df.parse(DATE2);
             if (dt1.getTime() >= dt2.getTime()) {
                 return 1;
             } else if (dt1.getTime() < dt2.getTime()) {
                 return -1;
             } else {
                 return 0;
             }
         } catch (Exception exception) {
             exception.printStackTrace();
         }
         return 0;
     }

     /**
      * 传入时间 算出星期几
      *
      * @param str
      *            2014年1月3日
      * @param days
      *            1:2014年1月4日 类推
      * @return
      */
     @SuppressLint("SimpleDateFormat")
     public static String formatDate(String str, int days) {

         String dateStr = "";
         try {
             DateFormat df = DateFormat.getDateInstance(DateFormat.LONG);
             Date date = df.parse(str);
             SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
             Calendar c = Calendar.getInstance();
             Date d = dateFormat.parse(dateFormat.format(date));
             c.setTime(d);
             c.add(Calendar.DAY_OF_MONTH, days);
             switch (c.get(Calendar.DAY_OF_WEEK) - 1) {
             case 0:
                 dateStr = "周日";
                 break;
             case 1:
                 dateStr = "周一";
                 break;
             case 2:
                 dateStr = "周二";
                 break;
             case 3:
                 dateStr = "周三";
                 break;
             case 4:
                 dateStr = "周四";
                 break;
             case 5:
                 dateStr = "周五";
                 break;
             case 6:
                 dateStr = "周六";
                 break;
             default:
                 break;
             }
         } catch (Exception e) {
             e.printStackTrace();
         }

         return dateStr;
     }
 }