没有按钮的JOptionPane [英] JOptionPane without button

问题描述

我需要在屏幕上显示需要5秒钟的信息消息，在此期间，用户无法关闭对话框。规范明确指出对话框不应该有任何按钮。
我有没有办法以对话框没有按钮的方式使用JoptionPane.showMessageDialog？

I need to present a information message that needs to be in the screen for 5 seconds, during this time, user can't close the dialog. The specification says clearly that the dialog shouldn't have any button. Is there a way I can use JoptionPane.showMessageDialog in a way that the dialog have no button?

推荐答案

关于这种方式使用 showOptionDialog ，可能不是 showMessageDialog ，但是当我们没有按钮或输入文本的地方时也是如此（可以由用户关闭）：

How about this way using showOptionDialog, maybe not showMessageDialog, but the same thing when we have no buttons or place to enter text (downfall is it can be closed by user):

  JOptionPane.showOptionDialog(null, "Hello","Empty?", JOptionPane.DEFAULT_OPTION,JOptionPane.INFORMATION_MESSAGE, null, new Object[]{}, null);

更新

这是另一种方式，它使用 JOptionPane 和 JDialog （甚至更好，因为用户无法关闭）：

Here is another way, it uses JOptionPane and JDialog (even better as it is uncloseable by user):

final JOptionPane optionPane = new JOptionPane("Hello world", JOptionPane.INFORMATION_MESSAGE, JOptionPane.DEFAULT_OPTION, null, new Object[]{}, null);

final JDialog dialog = new JDialog();
dialog.setTitle("Message");
dialog.setModal(true);

dialog.setContentPane(optionPane);

dialog.setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE);
dialog.pack();

//create timer to dispose of dialog after 5 seconds
Timer timer = new Timer(5000, new AbstractAction() {
    @Override
    public void actionPerformed(ActionEvent ae) {
        dialog.dispose();
    }
});
timer.setRepeats(false);//the timer should only go off once

//start timer to close JDialog as dialog modal we must start the timer before its visible
timer.start();

dialog.setVisible(true);

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