package com.lcjian.library.util.common;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.GregorianCalendar;
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import java.util.HashMap;
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import java.util.Locale;
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import java.util.Map;
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import android.annotation.SuppressLint;
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import android.util.Log;
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/**
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* 日期工具类
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*
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* @author LCJIAN
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*/
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public class DateUtils {
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private static final String TAG = "DateUtils";
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public static final String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
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public static final String YYYY_MM_DD_HH_MM_SS_2 = "yyMMddHHmmss";
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/** 年-月-日，默认日期格式 */
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public static final String YYYY_MM_DD = "yyyy-MM-dd";
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public static final String YYYY_MM_DD_2 = "yyyyMMdd";
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public static final String YY_MM_DD = "yy-MM-dd";
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public static final String HH_MM_SS = "HH:mm:ss";
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public static final long DAY = 24 * 60 * 60 * 1000L;
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private static final Map<String, SimpleDateFormat> DFS = new HashMap<String, SimpleDateFormat>();
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public static SimpleDateFormat getFormat(String pattern) {
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SimpleDateFormat format = DFS.get(pattern);
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if (format == null) {
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format = new SimpleDateFormat(pattern, Locale.CHINA);
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DFS.put(pattern, format);
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}
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return format;
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}
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/** protected构造方法 */
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protected DateUtils() {
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}
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/**
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* 使用默认格式将日期转换成字符串
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*
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* @param date
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* 需要转换的日期
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* @return 转换后的字符串，如果发生异常，返回空字符串
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*/
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public static String convertDateToStr(Date date) {
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if (date == null) {
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return "";
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} else {
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return convertDateToStr(date, YYYY_MM_DD);
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}
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}
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/**
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* 使用自定义格式，将日期转换成字符串
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*
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* @param date
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* 需要转换的日期
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* @param pattern
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* 自定义格式
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* @return 转换后的字符串，如果发生异常，返回空字符串
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*/
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public static String convertDateToStr(Date date, String pattern) {
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if (date == null) {
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return "";
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}
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SimpleDateFormat dateFormat = getFormat(pattern);
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return dateFormat.format(date);
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}
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/**
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* 使用默认格式，将字符串转换成日期
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*
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* @param str
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* 需要转换的字符串
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* @return 转换后的日期，如果发生异常，返回null
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*/
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public static Date convertStrToDate(String str) {
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if (str == null || str.equals("")) {
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return null;
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} else {
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return convertStrToDate(str, YYYY_MM_DD);
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}
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}
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/**
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* 根据自定义pattern将字符串日期转换成Date类型
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*
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* @param str
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* 需要转换的字符串
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* @param pattern
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* 自定义格式
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* @return 转换后的日期，如果发生异常，返回null
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*/
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public static Date convertStrToDate(String str, String pattern) {
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if (str == null || str.equals("")) {
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return null;
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}
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SimpleDateFormat dateFormat = getFormat(pattern);
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try {
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return dateFormat.parse(str);
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} catch (ParseException ex) {
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Log.i(TAG, "convertStrToDate: " + ex.getMessage());
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return null;
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}
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}
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/**
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* 将patternSrc格式的str转换为patterDst的字符串
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*
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* @param str
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* 需要转换的字符串
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* @param patternSrc
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* 原格式
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* @param patterDst
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* 目标格式
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* @return
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*/
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public static String formatDateStr(String str, String patternSrc,
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String patterDst) {
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return convertDateToStr(convertStrToDate(str, patternSrc), patterDst);
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}
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/**
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* 判断原日期是否在目标日期之前
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*
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* @param src
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* @param dst
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* @return
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*/
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public static boolean isBefore(Date src, Date dst) {
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return src.before(dst);
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}
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/**
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* 判断原日期是否在目标日期之后
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*
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* @param src
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* @param dst
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* @return
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*/
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public static boolean isAfter(Date src, Date dst) {
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return src.after(dst);
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}
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/**
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* 返回两个日期间的差异天数
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*
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* @param date1
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* 参照日期
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* @param date2
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* 比较日期
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* @return 参照日期与比较日期之间的天数差异，正数表示参照日期在比较日期之后，0表示两个日期同天，负数表示参照日期在比较日期之前
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*/
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public static int dayDiff(Date date1, Date date2) {
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Date fromDate = convertStrToDate(convertDateToStr(date1));
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Date toDate = convertStrToDate(convertDateToStr(date2));
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return (int) ((fromDate.getTime() - toDate.getTime()) / (DAY));
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}
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/*
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* 获取第二天凌晨时间
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*/
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@SuppressLint("SimpleDateFormat")
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public static Long getSecondDay(Long time) {
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Date d = new Date();
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SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
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String s = format.format(d);
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try {
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d = format.parse(s);
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time = d.getTime();
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return time + 86400000;
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}
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public static boolean isSameDay(Date date1, Date date2) {
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SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd", Locale.CHINESE);
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String sp_time = sf.format(date1);
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String current_time = sf.format(date2);
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return sp_time.equals(current_time);
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}
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/**
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* 判断两日期是否相同(毫秒)
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*
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* @param date1
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* @param date2
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* @return
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*/
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public static boolean isEqual(Date date1, Date date2) {
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return date1.compareTo(date2) == 0;
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}
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@SuppressLint("SimpleDateFormat")
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public static String getRelativeTimeStr(Date date) {
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long l = now().getTime() - date.getTime();
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long oneDay = 1000 * 60 * 60 * 24;
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String str = "";
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SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
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str = format.format(new Date(date.getTime() + oneDay));
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long secondDay = getTime(str) * 1000;
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long timeLag = secondDay - date.getTime();
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if (l < 1000 * 60) {
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return "刚刚";
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} else if (l < 1000 * 60 * 60) {
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return (l / (1000 * 60) + 1) + "分钟前";
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} else if (l < oneDay) {
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return (l / (1000 * 60 * 60)) + "小时前";
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} else if (l < oneDay * 2) {
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if (now().getTime() < secondDay + oneDay) {
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return "昨天";
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} else {
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return "前天";
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}
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} else if (l < oneDay * 3) {
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if (now().getTime() < secondDay + oneDay * 2) {
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return "前天";
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} else {
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return "3天前";
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}
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} else if (l < (oneDay * 7)) {
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return "3天前";
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} else if (l < (oneDay * 30)) {
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return "一个星期以前";
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} else if (l < (oneDay * 183)) {
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return "一个月以前";
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} else if (l < (oneDay * 365)) {
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return "半年前";
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} else {
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return format.format(new Date(date.getTime()));
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}
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// {
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// return convertDateToStr(date);
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// }
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}
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/**
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* 字符串转化为时间戳
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*
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* @param user_time
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* @return
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*/
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public static long getTime(String user_time) {
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long re_time = 0;
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
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Date d;
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try {
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d = sdf.parse(user_time);
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long l = d.getTime();
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String str = String.valueOf(l);
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re_time = Long.parseLong(str.substring(0, 10));
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} catch (Exception e) {
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e.printStackTrace();
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}
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return re_time;
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}
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/**
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* 获得当前时间的Date对象
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*
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* @return
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*/
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public static Date now() {
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return new Date();
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}
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/**
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* 获取星期几
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*/
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public static String getWeekDay(Date date) {
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// String[] weeks = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
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// Calendar cal = Calendar.getInstance();
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// cal.setTime(date);
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// int week_index = cal.get(Calendar.DAY_OF_WEEK) - 1;
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// if (week_index < 0) {
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// week_index = 0;
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// }
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// return weeks[week_index];
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SimpleDateFormat sdf = getFormat("EEEE");
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String week = sdf.format(date);
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return week;
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}
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/**
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* 返回当月第一天的日期
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*/
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public static Date firstDay(Date date) {
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(date);
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calendar.set(Calendar.DATE, 1);
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return calendar.getTime();
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}
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/**
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* 返回当月最后一天的日期
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*/
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public static Date lastDay(Date date) {
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(date);
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calendar.set(Calendar.DATE, calendar.getActualMaximum(Calendar.DATE));
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return calendar.getTime();
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}
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/**
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* 增加月份
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*/
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public static Date addMonths(Date src, int num) {
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(src);
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calendar.add(Calendar.MONTH, num);
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return calendar.getTime();
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}
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/**
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* 增加天数
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*/
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public static Date addDays(Date src, int num) {
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(src);
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calendar.add(Calendar.DATE, num);
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return calendar.getTime();
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}
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/**
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* @param year
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* 年
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* @param month
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* 月(1-12)
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* @param day
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* 日(1-31)
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* @return 输入的年、月、日是否是有效日期
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*/
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public static boolean isValid(int year, int month, int day) {
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if (month > 0 && month < 13 && day > 0 && day < 32) {
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// month of calendar is 0-based
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int mon = month - 1;
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Calendar calendar = new GregorianCalendar(year, mon, day);
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return calendar.get(Calendar.YEAR) == year
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&& calendar.get(Calendar.MONTH) == mon
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&& calendar.get(Calendar.DAY_OF_MONTH) == day;
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}
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return false;
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}
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/**
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* 时间戳转化定位
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*
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* @param date
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* @return
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*/
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public static String getTimeToString(Long date) {
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String str = "";
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SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
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str = format.format(new Date(date));
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return str;
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}
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}
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