TimeUtil【安卓時間工具類】

package com.jiada.face.utils;

import android.text.TextUtils;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;

public class TimeUtil {
    public static final int SECONDS_IN_DAY = 60 * 60 * 24;
    public static final long MILLIS_IN_DAY = 1000L * SECONDS_IN_DAY;
    private static final long ONE_MINUTE = 60000L;
    private static final long ONE_HOUR = 3600000L;
    private static final long ONE_DAY = 86400000L;
    private static final long ONE_WEEK = 604800000L;

    private static final String ONE_SECOND_AGO = "秒前";
    private static final String ONE_MINUTE_AGO = "分鐘前";
    private static final String ONE_HOUR_AGO = "小時前";
    private static final String ONE_DAY_AGO = "天前";
    private static final String ONE_MONTH_AGO = "月前";
    private static final String ONE_YEAR_AGO = "年前";

    private static SimpleDateFormat sdf = new SimpleDateFormat();
    public final static String FORMAT_DATE_TIME = "yyyy-MM-dd HH:mm:ss.SSS";

    public static boolean isSameDayOfMillis(final long ms1, final long ms2) {
        final long interval = ms1 - ms2;
        return interval < MILLIS_IN_DAY && interval > -1L * MILLIS_IN_DAY && toDay(ms1) == toDay(ms2);
    }

    private static long toDay(long millis) {
        return (millis + TimeZone.getDefault().getOffset(millis)) / MILLIS_IN_DAY;
    }

    /***
     * 由時間戳獲取現在時間，精確到秒
     */
    public static String parseTimeFromLong(long lon) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String date = sdf.format(new Date(lon));
        return date;
    }

    /**
     * 將時間字符串【例如：2020-02-07 10:30:15】轉換爲時間戳
     */
    public static long dateToLong(String s) {
        try {
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            Date date = simpleDateFormat.parse(s);
            long ts = date.getTime();
            return ts;
        } catch (Exception e) {
            return 0;
        }
    }


    /**
     * 由時間戳獲取現在時間，精確到日期
     */
    public static String parseDataFromLong(long data) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        String date = sdf.format(new Date(data));
        return date;
    }

    public static String parseDataFromLongUTF(long data) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy年MM月dd日");
        String date = sdf.format(new Date(data));
        return date;
    }

    /**
     * 獲取當前日期的指定格式的字符串
     *
     * @param format 指定的日期時間格式，若爲null或""則使用指定的格式"yyyy-MM-dd HH:mm:ss.SSS"
     * @return
     */
    public static String getCurrentTimeString(String format) {
        if (format == null || format.trim().equals("")) {
            sdf.applyPattern(FORMAT_DATE_TIME);
        } else {
            sdf.applyPattern(format);
        }
        return sdf.format(new Date());
    }

    /**
     * 根據時間字符串獲取描述性時間，如3分鐘前，1天前
     *
     * @param dateString 時間字符串
     * @return
     */
    public static String getDescriptionTimeFromDateString(String dateString) {
        if (TextUtils.isEmpty(dateString)) {
            return "";
        }
        sdf.applyPattern(FORMAT_DATE_TIME);
        try {
            return getDescriptionTimeFromDate(sdf.parse(formatZhuiShuDateString(dateString)));
        } catch (Exception e) {
            Log_Ma.e("timeUtils", "getDescriptionTimeFromDateString: " + e);
        }
        return "";
    }

    /**
     * @param dateString 時間字符串
     * @return
     */
    public static String formatZhuiShuDateString(String dateString) {
        return dateString.replaceAll("T", " ").replaceAll("Z", "");
    }

    /**
     * 根據Date獲取描述性時間，如3分鐘前，1天前
     *
     * @param date
     * @return
     */
    public static String getDescriptionTimeFromDate(Date date) {
        long delta = new Date().getTime() - date.getTime();
        if (delta < 1L * ONE_MINUTE) {
            long seconds = toSeconds(delta);
            return (seconds <= 0 ? 1 : seconds) + ONE_SECOND_AGO;
        }
        if (delta < 45L * ONE_MINUTE) {
            long minutes = toMinutes(delta);
            return (minutes <= 0 ? 1 : minutes) + ONE_MINUTE_AGO;
        }
        if (delta < 24L * ONE_HOUR) {
            long hours = toHours(delta);
            return (hours <= 0 ? 1 : hours) + ONE_HOUR_AGO;
        }
        if (delta < 48L * ONE_HOUR) {
            return "昨天";
        }
        if (delta < 30L * ONE_DAY) {
            long days = toDays(delta);
            return (days <= 0 ? 1 : days) + ONE_DAY_AGO;
        }
        if (delta < 12L * 4L * ONE_WEEK) {
            long months = toMonths(delta);
            return (months <= 0 ? 1 : months) + ONE_MONTH_AGO;
        } else {
            long years = toYears(delta);
            return (years <= 0 ? 1 : years) + ONE_YEAR_AGO;
        }
    }

    public static long toSeconds(long date) {
        return date / 1000L;
    }

    private static long toMinutes(long date) {
        return toSeconds(date) / 60L;
    }

    private static long toHours(long date) {
        return toMinutes(date) / 60L;
    }

    private static long toDays(long date) {
        return toHours(date) / 24L;
    }

    private static long toMonths(long date) {
        return toDays(date) / 30L;
    }

    private static long toYears(long date) {
        return toMonths(date) / 365L;
    }

    /**
     * 獲取今天是星期幾
     */
    public static int getCurrentDayOfWeek(Date date) {
        Calendar calendar = Calendar.getInstance();//日曆對象
        if (date != null) {
            calendar.setTime(date);//設置傳入日期
        } else {
            calendar.setTime(new Date());//設置當前日期
        }
        int i = calendar.get(Calendar.DAY_OF_WEEK);
        return i;
    }

    /**
     * 獲取前一天的日期
     */
    public static Date getDateForLastDay(Date date, int amount) {
        Calendar ca = Calendar.getInstance();//得到一個Calendar的實例
        if (date != null) {
            ca.setTime(date); //設置時間爲傳入時間
        } else {
            ca.setTime(new Date()); //設置時間爲當前時間
        }
        ca.add(Calendar.DATE, -amount);
        Date lastDay = ca.getTime(); //結果
        //前一年ca.add(Calendar.YEAR, -1);
        //求前一月ca.add(Calendar.MONTH, -1)，
        //前一天ca.add(Calendar.DATE, -1)
        //lastDay.getDay()周幾  lastDay.getDate()日期
        return lastDay;
    }

    /**
     * 獲取後一天的日期
     */
    public static Date getDateForNextDay(Date date, int amount) {
        Calendar ca = Calendar.getInstance();//得到一個Calendar的實例
        if (date != null) {
            ca.setTime(date); //設置時間爲傳入時間
        } else {
            ca.setTime(new Date()); //設置時間爲當前時間
        }
        ca.add(Calendar.DATE, +amount);
        Date lastDay = ca.getTime(); //結果
        //前一年ca.add(Calendar.YEAR, -1);
        //求前一月ca.add(Calendar.MONTH, -1)，
        //前一天ca.add(Calendar.DATE, -1)
        //lastDay.getDay()周幾  lastDay.getDate()日期
        return lastDay;
    }
}