所以我一直在想一个游戏的想法，一个人需要一直旅行。所以我写了一个JFrame来显示一个螺旋的.gif文件，但是当对话框显示时它不会结束，它会保留在后台。我可以解决这个问题吗？
import java.awt.*;
import java.net.*;
import javax.swing.*;
public class Game {
public static void main(String[] args) throws MalformedURLException {
URL url = new URL("https://s-media-cache-ak0.pinimg.com/originals/e8/e4/02/e8e4028941eb06f2fd5c10f44bfc5e1b.gif");
Icon icon = new ImageIcon(url);
JLabel label = new JLabel(icon);
JFrame f = new JFrame("Trippy");
f.getContentPane().add(label);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
//This is the part i want the .gif to end. Instead, it just runs in the background.
JOptionPane.showMessageDialog(null, "You have traveled through space and time!");
}
}
答案 0 :(得分：2)
首先，将DO_NOTHING_ON_CLOSE更改为类似dispose的内容，这至少会阻止用户关闭窗口并在您自行处理框架时停止退出JVM。
接下来，经过短暂的延迟（因为效果真的很酷），你想在框架上调用Timer以便关闭它。
为了实现这一目标，您可以使用Swing import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.net.MalformedURLException;
import java.net.URL;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.Timer;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Game {
public static void main(String[] args) {
new Game();
}
public Game() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
try {
URL url = new URL("https://s-media-cache-ak0.pinimg.com/originals/e8/e4/02/e8e4028941eb06f2fd5c10f44bfc5e1b.gif");
Icon icon = new ImageIcon(url);
JLabel label = new JLabel(icon);
JFrame f = new JFrame("Trippy");
f.getContentPane().add(label);
f.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
Timer timer = new Timer(5000, new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
f.dispose();
//This is the part i want the .gif to end. Instead, it just runs in the background.
JOptionPane.showMessageDialog(null, "You have traveled through space and time!");
}
});
timer.setRepeats(false);
timer.start();
} catch (MalformedURLException exp) {
exp.printStackTrace();
}
}
});
}
}
，例如......
ContainerFragment有关详细信息，请查看How to use Swing Timers。
您还应该考虑使用CardLayout来减少实际拥有的窗口数量，这样可以提供更好的用户体验。