java - 关闭 JOptionPane 后全屏卡住

Question

package sample;

import java.awt.DisplayMode;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;

public class NewClass {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        final JFrame frame = new JFrame();
        final JDesktopPane d = new JDesktopPane();
        frame.setTitle("Frame");
        frame.setSize(800, 600);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        GraphicsDevice device = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice();
        device.setFullScreenWindow(frame);
        device.setDisplayMode(new DisplayMode(800, 600, 32, 60));
        frame.setVisible(true);

        JButton btn = new JButton();
        btn.setText("Button");
        final JPanel panel = new JPanel();

        panel.add(btn);
        frame.add(panel);
        final JFileChooser chooser = new JFileChooser();
        chooser.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                if (e.getActionCommand().equals(JFileChooser.APPROVE_SELECTION)) {
                    System.out.println("File selected: " + chooser.getSelectedFile());
                    chooser.getFocusCycleRootAncestor().setVisible(false);
                } else {
                    chooser.getFocusCycleRootAncestor().setVisible(false);
                }
            }
        });
        btn.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                JOptionPane.showInternalOptionDialog(frame.getContentPane(), chooser, "Browse", JOptionPane.DEFAULT_OPTION, JOptionPane.PLAIN_MESSAGE, null, new Object[]{}, null);
            }
        });
    }
}

这段代码对你来说看起来很奇怪，但这是使用GraphicsDevice保留全屏的唯一方法。我的问题是，当我单击 JFileChooser 的取消或打开按钮时，我的屏幕会使用此代码 chooser.getFocusCycleRootAncestor().setVisible(false); 卡住。如何使用内部对话框关闭 JOPtionPane，而不卡住屏幕或关闭整个屏幕。

Answer 1

你的问题不在

chooser.getFocusCycleRootAncestor().setVisible(false);

如果您进行这些更改，您的代码将完美运行

只需删除这部分

 JOptionPane.showInternalOptionDialog(frame.getContentPane(),chooser, "Browse",JOptionPane.DEFAULT_OPTION, JOptionPane.PLAIN_MESSAGE, null, new Object[]{}, null);

并添加此代码

 chooser.showOpenDialog(frame);

如果您还有其他疑问，请告诉我