java - JCalendar 和 PropertyChangeListener : event is not fired for current day

Question

我正在使用 JCalendar 并使用 PropertyChangeListener 设置监听器。我的问题是，这个监听器不会响应当天的事件，我认为是因为属性没有变化。我希望它能够响应选择今天的日期，因为日历会导致日记。打开时，我仍然希望日历在“今天”的日期打开，但要有一个监听器来响应按下“今天”的日期。我的监听器代码如下:

final JCalendar calendar = new JCalendar();

calendar.getDayChooser().addPropertyChangeListener("day", new PropertyChangeListener() {
    @Override
    public void propertyChange(PropertyChangeEvent e) {

        if(Calendar.AddJob!=1){
            JOptionPane.showMessageDialog(null,"No Entry Found");
            frame.dispose();
            String date = EditDate(calendar.getDate().toString());
            WorkDiary.WorkDiaryGui(date);
        }

        if(Calendar.AddJob==1){
            String date = EditDate(calendar.getDate().toString());  
            Calendar.AddJob=0;
            frame.dispose();
            WorkDiaryAddJob.WorkDiaryAddJobGui(CalReg, date);
        }
    }
});

Answer 1

My problem is that this listener will not respond to an event on the current day, I assume because there is no change in the property.

您的假设是正确的:如果您按下所选日期(即今天)的按钮，日期选择器不会触发日期属性更改。这是有道理的，因为实际上属性并没有改变。

I want it to be able to respond to selecting today's date, as the calendar leads to a diary.

要修改上述行为，我们可以使用 setAlwaysFireDayProperty(boolean alwaysFire)强制日期选择器始终触发属性更改事件的方法:

JCalendar calendar = new JCalendar();        
JDayChooser dayChooser = calendar.getDayChooser();
dayChooser.setAlwaysFireDayProperty(true); // here is the key
dayChooser.addPropertyChangeListener("day", ...);

注意:this answer 中也对此进行了解释.