Calendar日历类显示年、季度、月、天

来源：互联网发布：itunes不能下载软件编辑：程序博客网时间：2024/06/11 09:54

使用Calendar获取时间分量

1.生成实例

     Calendar cal1 = Calendar.getInstance();

2.设置时间按照：年月日时分秒

 cal1.set(cal1.get(Calendar.YEAR),cal1.get(Calendar.MONDAY), cal1.get(Calendar.DAY_OF_MONTH), 0, 0,0);

3.时间获得相差的天数

// 得微秒级时间差

long val = calendarEnd.getTimeInMillis() - calendarBegin.getTimeInMillis();

// 换算后得到天数

long day = val / (1000 * 60 * 60 * 24);

3.例子

Calendar cal1 = Calendar.getInstance();

Calendar cal2 = Calendar.getInstance();

if("day".equals("timeZone")){ //时间分量当天

cal1.set(cal1.get(Calendar.YEAR),cal1.get(Calendar.MONDAY), cal1.get(Calendar.DAY_OF_MONTH), 0, 0,0);

cal2.set(cal2.get(Calendar.YEAR),cal2.get(Calendar.MONDAY), cal2.get(Calendar.DAY_OF_MONTH), 0, 0,0);

cal2.set(Calendar.HOUR_OF_DAY, 24);

}

if("month".equals("timeZone")){ //时间分量当月

cal1.set(cal1.get(Calendar.YEAR),cal1.get(Calendar.MONDAY), cal1.get(Calendar.DAY_OF_MONTH), 0, 0,0);

cal1.set(Calendar.DAY_OF_MONTH,cal1.getActualMinimum(Calendar.DAY_OF_MONTH));

cal2.set(cal2.get(Calendar.YEAR),cal2.get(Calendar.MONDAY), cal2.get(Calendar.DAY_OF_MONTH), 0, 0,0);

cal2.set(Calendar.DAY_OF_MONTH,cal2.getActualMaximum(Calendar.DAY_OF_MONTH));

cal2.set(Calendar.HOUR_OF_DAY, 24);

}

if("Quarterly".equals("timeZone")){ //当前季度

int currentMonth = cal1.get(Calendar.MONTH) + 1;

if (currentMonth >= 1 && currentMonth <= 3) {

//一季度

cal1.set(cal1.get(Calendar.YEAR),0, 1, 0, 0,0);

cal2.set(cal1.get(Calendar.YEAR),3, 0, 0, 0,0);

} else if (currentMonth >= 4 && currentMonth <= 6) {

//二季度

cal1.set(cal1.get(Calendar.YEAR),3, 1, 0, 0,0);

cal2.set(cal1.get(Calendar.YEAR),6, 0, 0, 0,0);

} else if (currentMonth >= 7 && currentMonth <= 9) {

//三季度

cal1.set(cal1.get(Calendar.YEAR),6, 1, 0, 0,0);

cal2.set(cal1.get(Calendar.YEAR),9, 0, 0, 0,0);

} else if (currentMonth >= 10 && currentMonth <= 12) {

//四季度

cal1.set(cal1.get(Calendar.YEAR),9, 1, 0, 0,0);

cal2.set(cal1.get(Calendar.YEAR),12, 0, 0, 0,0);

}

if("year".equals("timeZone")){ //当前年份

cal1.set(cal1.get(Calendar.YEAR),0, 1, 0, 0,0);

cal2.set(cal2.get(Calendar.YEAR)+1,0, 0, 0, 0,0);

}

0 0