本文介绍了如何在Java Swing应用程序中添加简单的延迟?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想知道如何在Java中的Swing应用程序中添加时间延迟,我使用 Thread.sleep(时间)
,还使用了SwingWorker但是它不起作用。这是我的代码的一部分:
I'd like to know how to add a time delay inside a Swing app in Java, I used Thread.sleep(time)
, and also I used SwingWorker but it doesn't work. Here's part of my code:
switch (state) {
case 'A':
if (charAux == 'A') {
state = 'B';
//Here's where I'd like to add a time delay
jLabel13.setForeground(Color.red);
break;
} else {
//Here's where I'd like to add a time delay
jLabel12.setForeground(Color.red);
break;
}
}
我希望你能帮助我或解决我的怀疑我正在使用SwingWorker。
I hope you could help me or solve my doubts when I'm using SwingWorker.
推荐答案
以下是使用 javax.swing.Timer
public class TestBlinkingText {
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException ex) {
} catch (InstantiationException ex) {
} catch (IllegalAccessException ex) {
} catch (UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new BlinkPane());
frame.setSize(200, 200);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
protected static class BlinkPane extends JLabel {
private JLabel label;
private boolean state;
public BlinkPane() {
label = new JLabel("Look at me!");
setLayout(new GridBagLayout());
add(label);
Timer timer = new Timer(500, new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
state = !state;
if (state) {
label.setForeground(Color.RED);
} else {
label.setForeground(Color.BLACK);
}
repaint();
}
});
timer.setRepeats(true);
timer.setCoalesce(true);
timer.setInitialDelay(0);
timer.start();
}
}
}
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