Question

有没有办法从选择器中减去两个日期。

示例：

我将从picker1中选择一个日期，从picker2中选择日期。
然后，picker2 - picker1获取这两个日期之间的天数。

    20/10/2014
(-) 06/10/2014 
--------------
            14 days

Answer 1

DateTimeUtils obj = new DateTimeUtils();
  SimpleDateFormat simpleDateFormat = 
            new SimpleDateFormat("dd/M/yyyy hh:mm:ss");

  try {

    Date date1 = simpleDateFormat.parse("10/10/2013 11:30:10");
    Date date2 = simpleDateFormat.parse("13/10/2013 20:35:55");

    obj.printDifference(date1, date2);

  } catch (ParseException e) {
    e.printStackTrace();
  }

}

//1 minute = 60 seconds
//1 hour = 60 x 60 = 3600
//1 day = 3600 x 24 = 86400
public void printDifference(Date startDate, Date endDate){

    //milliseconds
    long different = endDate.getTime() - startDate.getTime();

    System.out.println("startDate : " + startDate);
    System.out.println("endDate : "+ endDate);
    System.out.println("different : " + different);

    long secondsInMilli = 1000;
    long minutesInMilli = secondsInMilli * 60;
    long hoursInMilli = minutesInMilli * 60;
    long daysInMilli = hoursInMilli * 24;

    long elapsedDays = different / daysInMilli;
    different = different % daysInMilli;

    long elapsedHours = different / hoursInMilli;
    different = different % hoursInMilli;

    long elapsedMinutes = different / minutesInMilli;
    different = different % minutesInMilli;

    long elapsedSeconds = different / secondsInMilli;

    System.out.printf(
        "%d days, %d hours, %d minutes, %d seconds%n", 
        elapsedDays,
        elapsedHours, elapsedMinutes, elapsedSeconds);

}

输出就是这个

startDate : Thu Oct 10 11:30:10 SGT 2013
endDate : Sun Oct 13 20:35:55 SGT 2013
different : 291945000
3 days, 9 hours, 5 minutes, 45 seconds

通过此链接回答Android difference between Two Dates

Answer 2

由于提供的信息不多，我假设您使用的是DatePicker

基本流程是这样的：

从getDayOfMonth()拨打getMonth()，getYear()和DataPicker，分别获取日，月和年。

获得这些信息后，我认为您应该能够计算它们之间的日差。

仅供您参考，以下是关于日差的主题，希望对此有所帮助。

Difference in days between two dates in Java?

Answer 3

短而简单

SimpleDateFormat simpleDateFormat= new SimpleDateFormat("dd/MM/yyyy");
java.util.Date date1 = null;
java.util.Date date2 = null;
try {
        date1  = simpleDateFormat.parse("20/10/2014");
        date2  = simpleDateFormat.parse("06/10/2014");
    } catch (java.text.ParseException e) {
        e.printStackTrace();
    }
int diffInDays = (int) ((date1.getTime() - date2.getTime())/ (1000 * 60 * 60 * 24));

编辑：

Hello Uday

非常简单，你有两个EditText，所以首先将你的日期设置为et和et1，现在

et.getText().toString(); //Do same for et1 also

此方法将帮助您获取日期，现在可以应用于我的代码

在android中减去两个日期选择器

3 个答案: