Question

我有一个问题。如何比较2日期和时间

enter code here
if(fromdate<=nowdt.now() && todate>= nowdt.now()){
////

}

Answer 1

java.util.Date对象包含用于比较日期的方法.before（）,. after和.equals（）。

if((fromdate.before(nowDt) || fromDate.equals(nowDt)) 
    && ((todate.after(nowDt) || toDate.equals(nowDt))
////

}

Answer 2

比较两个日期和时间的功能：

public static int compareTwoDates(Date date1, Date date2) {
        if (date1 != null && date2 != null) {
            int retVal = date1.compareTo(date2);

            if (retVal > 0)
                return 1; // date1 is greatet than date2
            else if (retVal == 0) // both dates r equal
                return 0;

        }
        return -1; // date1 is less than date2
    }

您可以在任意位置使用它。结果将是> 0如果date1＆gt; date2，如果date1 = date2，则为0，＆lt;如果date1＆lt; 0 DATE2。希望它有所帮助。

Answer 3

- 使用Joda Time library执行此操作....

<强>例如

Date ds = new Date();
DateTime d = new DateTime(ds);

DateTime e = new DateTime(2012,12,07, 0, 0);
System.out.println(d.isEqual(e));


System.out.println(d.toDateMidnight().isEqual(e.toDateMidnight()));

/////////////////////////////或

System.out.println(d.withTimeAtStartOfDay().isEqual(e.withTimeAtStartOfDay()));

Answer 4

尝试一下以找出时差

  Calendar Day = Calendar.getInstance();
  Day.set(Calendar.DAY_OF_MONTH,25);
  Day.set(Calendar.MONTH,7); 
  Day.set(Calendar.YEAR, 1985);

  Calendar today = Calendar.getInstance();

  long diff = today.getTimeInMillis() - Day.getTimeInMillis();

Answer 5

你可以写

long nowTime = System.currentTimeMillis();
if(fromdate.getTime() <= nowTime && nowTime <= todate.getTime()) {

或者你可以写

Date nowDate = new Date();
if(fromdate.compareTo(nowDate) * nowDate.compareTo(todate) >= 0) {

或

if(!fromdate.after(nowDate) && !todate.before(nowDate))

Answer 6

使用此答案

if((options.FromDate.before(now_Date)||options.FromDate.equals(now_Date)) && (options.ToDate.after(now_Date)|| options.ToDt.equals(now_Date)) ){

do some processs........
}

如何在android中比较两个日期和时间

6 个答案: