獲取最近一周、最近一月的開始與結束時間范圍

一、獲取最近一周時間范圍

// 獲得當前日期與本周一相差的天數
    private int getMondayPlus() {
        Calendar cd = Calendar.getInstance();
        // 獲得今天是一周的第幾天，星期日是第一天，星期二是第二天......
        int dayOfWeek = cd.get(Calendar.DAY_OF_WEEK);
        if (dayOfWeek == 1) {
            return -6;
        } else {
            return 2 - dayOfWeek;
        }
    }

// 獲得當前周--周一的日期
    private String getCurrentMonday() {
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        int mondayPlus = getMondayPlus();
        GregorianCalendar currentDate = new GregorianCalendar();
        currentDate.add(GregorianCalendar.DATE, mondayPlus);
        Date monday = currentDate.getTime();
        return dateFormat.format(monday);
    }

// 獲得當前周--周日的日期
    private String getPreviousSunday() {
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        int mondayPlus = getMondayPlus();
        GregorianCalendar currentDate = new GregorianCalendar();
        currentDate.add(GregorianCalendar.DATE, mondayPlus + 6);
        Date sunday = currentDate.getTime();
        return dateFormat.format(sunday);
    }

二、獲取最近一月時間范圍

// 獲得當前月--開始日期
    private String getMinMonthDate() {
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(new Date());
        calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMinimum(Calendar.DAY_OF_MONTH));
        return dateFormat.format(calendar.getTime());
    }

// 獲得當前月--結束日期
    private String getMaxMonthDate() {
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(new Date());
        calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH));
        return dateFormat.format(calendar.getTime());
    }