Android常用的工具方法(5)

1.date转化为字符串

/**
     * date转化为字符串
     * @param messageDate
     * @return
     */
    public static String getTimestampString(Date messageDate) {
        Locale curLocale = HXSDKHelper.getInstance().getAppContext().getResources().getConfiguration().locale;

        String languageCode = curLocale.getLanguage();

        boolean isChinese = languageCode.contains("zh");

        String format = null;

        long messageTime = messageDate.getTime();
        if (isSameDay(messageTime)) {
            Calendar calendar = GregorianCalendar.getInstance();
            calendar.setTime(messageDate);
            int hour = calendar.get(Calendar.HOUR_OF_DAY);

            format = "HH:mm";

            if (hour > 17) {
                if (isChinese) {
                    format = "晚上 hh:mm";
                }

            } else if (hour >= 0 && hour <= 6) {
                if (isChinese) {
                    format = "凌晨 hh:mm";
                }
            } else if (hour > 11 && hour <= 17) {
                if (isChinese) {
                    format = "下午 hh:mm";
                }

            } else {
                if (isChinese) {
                    format = "上午 hh:mm";
                }
            }
        } else if (isYesterday(messageTime)) {
            if (isChinese) {
                format = "昨天 HH:mm";
            } else {
                format = "MM-dd HH:mm";
            }

        } else {
            if (isChinese) {
                format = "M月d日 HH:mm";
            } else {
                format = "MM-dd HH:mm";
            }
        }

        if (isChinese) {
            return new SimpleDateFormat(format, Locale.CHINA).format(messageDate);
        } else {
            return new SimpleDateFormat(format, Locale.US).format(messageDate);
        }
    }

1. 时间格式化输出为字符串

 /**
     * 时间格式化输出为字符串
     * @param dateStr
     * @param formatStr
     * @return
     */
    public static Date StringToDate(String dateStr, String formatStr) {
        DateFormat format = new SimpleDateFormat(formatStr);
        Date date = null;
        try {
            date = format.parse(dateStr);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return date;
    }

3.获取日期年份

 /**
     * 获取日期年份
     *
     * @param date 日期
     * @return
     */
    public static String getYear(Date date) {
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        return df.format(date).substring(0, 4);
    }

4.获取日期月份

/**
     * 功能描述：返回月
     *
     * @param date Date 日期
     * @return 返回月份
     */
    public static int getMonth(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        return calendar.get(Calendar.MONTH) + 1;
    }

5.获取日期天

  /**
     * 功能描述：返回日
     *
     * @param date Date 日期
     * @return 返回日份
     */
    public static int getDay(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        return calendar.get(Calendar.DAY_OF_MONTH);
    }

6.获取日期的时分秒等

 /**
     * 功能描述：返回小
     *
     * @param date 日期
     * @return 返回小时
     */
    public static int getHour(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        return calendar.get(Calendar.HOUR_OF_DAY);
    }

    /**
     * 功能描述：返回分
     *
     * @param date 日期
     * @return 返回分钟
     */
    public static int getMinute(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        return calendar.get(Calendar.MINUTE);
    }

    /**
     * 返回秒钟
     *
     * @param date Date 日期
     * @return 返回秒钟
     */
    public static int getSecond(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        return calendar.get(Calendar.SECOND);
    }

    /**
     * 功能描述：返回毫
     *
     * @param date 日期
     * @return 返回毫
     */
    public static long getMillis(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        return calendar.getTimeInMillis();
    }

7.获取日期的星期几

/**
     * 获取日期的星期几
     * @param time
     * @return
     */
    public static String getWeek(Long time){
        Date date = new Date(time);
        SimpleDateFormat dateFm = new SimpleDateFormat("EEEE");
       return  dateFm.format(date);
    }