使用今天的日期查看日期

date android java

2022-09-01 05:29:40

我写了一些代码来检查两个日期，一个开始日期和一个结束日期。如果结束日期早于开始日期，它将给出一个提示，指出结束日期早于开始日期。

我还想添加一个检查，如果开始日期早于今天（今天和用户使用应用程序的那一天），我该怎么做？（下面的日期检查器代码，如果有任何轴承，所有这些都是为Android编写的）

if (startYear > endYear) {
    fill = fill + 1;
    message = message + "End Date is Before Start Date" + "\n";
} else if (startMonth > endMonth && startYear >= endYear) {
    fill = fill + 1;
    message = message + "End Date is Before Start Date" + "\n";
} else if (startDay > endDay && startMonth >= endMonth && startYear >= endYear) {
    fill = fill + 1;
    message = message + "End Date is Before Start Date" + "\n";
}

答案 1

不要让它复杂化那么多。使用这种简单的方法。导入 DateUtils java 类并调用以下返回布尔值的方法。

DateUtils.isSameDay(date1,date2);
DateUtils.isSameDay(calender1,calender2);
DateUtils.isToday(date1);

有关更多信息，请参阅此文章 DateUtils Java

答案 2

这有帮助吗？

Calendar c = Calendar.getInstance();

// set the calendar to start of today
c.set(Calendar.HOUR_OF_DAY, 0);
c.set(Calendar.MINUTE, 0);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0);

// and get that as a Date
Date today = c.getTime();

// or as a timestamp in milliseconds
long todayInMillis = c.getTimeInMillis();

// user-specified date which you are testing
// let's say the components come from a form or something
int year = 2011;
int month = 5;
int dayOfMonth = 20;

// reuse the calendar to set user specified date
c.set(Calendar.YEAR, year);
c.set(Calendar.MONTH, month);
c.set(Calendar.DAY_OF_MONTH, dayOfMonth);

// and get that as a Date
Date dateSpecified = c.getTime();

// test your condition
if (dateSpecified.before(today)) {
  System.err.println("Date specified [" + dateSpecified + "] is before today [" + today + "]");
} else {
  System.err.println("Date specified [" + dateSpecified + "] is NOT before today [" + today + "]");
}