我想在JDatePicker
的FocusEvent
中执行一些功能。我正在使用下面的代码来实现 FocusListener
。
Properties p = new Properties();
p.put("text.today", "Today");
p.put("text.month", "Month");
p.put("text.year", "Year");
UtilDateModel model = new UtilDateModel();
Calendar today=Calendar.getInstance();
Date todayDate=new Date();
today.setTime(todayDate);
model.setDate(today.get(Calendar.YEAR), today.get(Calendar.MONTH), today.get(Calendar.DATE));
model.setSelected(true);
JDatePanelImpl datePanel =new JDatePanelImpl(model, p);
JDatePickerImpl datePicker = new JDatePickerImpl(datePanel,new DateLabelFormatter());
datePicker.addFocusListener(new FocusListener() {
@Override
public void focusLost(FocusEvent e) {
// TODO Auto-generated method stub
System.out.println("fcus lost");
}
@Override
public void focusGained(FocusEvent e) {
// TODO Auto-generated method stub
System.out.println("focus gained");
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
//repaint();
displayImage(categoryAttributeObj,imGroupObj);
}
});
}
});
此代码不起作用。这段代码有错误吗?
最佳答案
由于一些个人原因,我并不是 JDatePicker
的特别粉丝。
您可以实现自己的版本,为您提供所需的功能,或者您可以尝试 SwingLabs、SwingX JXDatePicker
,例如
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import org.jdesktop.swingx.JXDatePicker;
public class Main {
public static void main(String[] args) {
new Main();
}
public Main() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
add(new JButton("Before"));
JXDatePicker picker = new JXDatePicker();
picker.getEditor().addFocusListener(new FocusAdapter() {
@Override
public void focusGained(FocusEvent e) {
System.out.println("You have foucs");
}
});
add(picker);
add(new JButton("After"));
}
}
}
关于java - 如何实现JDatePicker的FocusListener?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30567744/