我在添加物质外观方面遇到了麻烦，这是我第一次尝试它，我想添加石墨玻璃，但它不起作用我的代码：
package loader;
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Frame;
import java.awt.LayoutManager;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.logging.Logger;
import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenuBar;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JWindow;
import javax.swing.SwingConstants;
import javax.swing.SwingWorker;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import org.pushingpixels.substance.api.SubstanceLookAndFeel;
import org.pushingpixels.substance.api.skin.GraphiteGlassSkin;
import org.pushingpixels.substance.api.skin.GraphiteSkin;
import org.pushingpixels.substance.api.skin.SubstanceGraphiteGlassLookAndFeel;
import org.pushingpixels.substance.api.skin.SubstanceGraphiteLookAndFeel;
import org.pushingpixels.substance.api.skin.SubstanceRavenLookAndFeel;
import org.pushingpixels.substance.api.skin.TwilightSkin;
public class Loader extends JWindow implements ActionListener {
private static URLClassLoader classLoader;
private static int downloaded; // number of bytes downloaded
// to
// splash
// image
private final static String FRAME_IMAGE = "http://i.imgur.com/UW5ZfQ5.jpg"; // icon
// for
// the
// frame
private final static String JAR_URL = "http://chefJones.com/play/client.jar"; // link
// to
// jar
final static Loader loader = new Loader();
private final static Logger logger = Logger.getLogger(Loader.class
.getName());
private static String MAIN_CLASS = "RunClient"; // put your jars main class
// here
private static JProgressBar progressBar;
/**
*
*/
private static final long serialVersionUID = -1162207878136245145L;
private static int size; // size of download in bytes
private static JDialog splash;
private final static String SPLASH_IMAGE = "http://i.imgur.com/wPH1YJb.png"; // link
private static float getProgress() {
return ((float) downloaded / size) * 100;
}
private static void grabJAR() throws ClassNotFoundException,
InstantiationException, IllegalAccessException, IOException,
UnsupportedLookAndFeelException {
final URL url = new URL(Loader.JAR_URL);
final InputStream is = url.openStream();
final byte[] b = new byte[2048];
int length;
final HttpURLConnection connection = (HttpURLConnection) url
.openConnection();
// Specify what portion of file to download.
connection.setRequestProperty("Range", "bytes=" + downloaded + "-");
// Connect to server.
connection.connect();
// Make sure response code is in the 200 range.
if ((connection.getResponseCode() / 100) != 2) {
logger.info("Unable to find file");
return;
}
// set content length.
size = connection.getContentLength();
while ((length = is.read(b)) != -1) {
downloaded += length;
progressBar.setValue((int) getProgress()); // set progress bar
}
is.close();
classLoader = new URLClassLoader(new URL[] { (url) });
final Applet client = (Applet) classLoader.loadClass(MAIN_CLASS)
.newInstance();
client.init();
client.start();
loader.loadClient(client);
setFrameTheme();
}
protected static void hideSplashScreen() {
splash.setVisible(false);
splash.dispose();
}
public static void main(final String... args)
throws InstantiationException, IllegalAccessException,
ClassNotFoundException, IOException,
UnsupportedLookAndFeelException {
try {
JFrame.setDefaultLookAndFeelDecorated(true);
SubstanceLookAndFeel.setSkin(new GraphiteSkin());
SubstanceLookAndFeel.setSkin("org.pushingpixels.substance.api.skin.GraphiteSkin");
UIManager.setLookAndFeel(new SubstanceGraphiteLookAndFeel());
UIManager.setLookAndFeel("org.pushingpixels.substance.api.skin.SubstanceGraphiteLookAndFeel");
} catch (Exception e) {
e.printStackTrace();
}
try {
showSplashScreen();
} catch (final MalformedURLException e) {
logger.severe("Encounter error: " + e.getClass());
logger.severe("Error message: " + e.getMessage());
logger.severe("Error cause: " + e.getCause());
}
final SwingWorker<Void, Integer> worker = new SwingWorker<Void, Integer>() {
@Override
protected Void doInBackground() throws Exception {
grabJAR();
return null;
}
@Override
protected void done() {
hideSplashScreen();
}
};
worker.execute();
}
private static void setFrameTheme() throws ClassNotFoundException,
InstantiationException, IllegalAccessException,
UnsupportedLookAndFeelException
{
try {
UIManager.setLookAndFeel("org.pushingpixels.substance.api.skin.GraphiteGlassLookAndFeel");
} catch (final Exception e) {
UIManager.setLookAndFeel("org.pushingpixels.substance.api.skin.GraphiteGlassLookAndFeel");
}
}
protected static void showSplashScreen() throws MalformedURLException {
splash = new JDialog((Frame) null);
splash.setModal(false);
splash.setAlwaysOnTop(true);
splash.setUndecorated(true);
final JLabel background = new JLabel(new ImageIcon(
new URL(SPLASH_IMAGE)));
background.setOpaque(true);
background.setLayout(new BorderLayout());
splash.getContentPane().add(background);
final JLabel text = new JLabel("Loading, please wait...");
text.setFont(new Font("Segoe UI Light", Font.BOLD | Font.PLAIN, 15));
text.setHorizontalAlignment(SwingConstants.CENTER);
text.setForeground(Color.WHITE);
text.setBorder(BorderFactory.createEmptyBorder(100, 50, 100, 50));
background.add(text);
progressBar = new JProgressBar();
background.add(progressBar, BorderLayout.SOUTH);
splash.pack();
splash.setLocationRelativeTo(null);
splash.setVisible(true);
}
private JButton Button1;
private JButton Button2;
private JButton Button3;
private JButton Button6;
private JFrame clientFrame;
private final JPanel clientPanel = new JPanel();
private LayoutManager Layout;
public JPanel totalPanel;
@Override
public void actionPerformed(final ActionEvent actionevent) {
final String s = actionevent.getActionCommand();
if (s.equals("Vote")) {
LoaderUtils.openURL("http://chefJones.com/vote/");
} else if (s.equals("Hiscores")) {
LoaderUtils.openURL("http://chefJones.com/hiscores");
} else if (s.equals("Forum")) {
LoaderUtils.openURL("http://chefJones.com/forums");
} else
if (s.equals("Store")) {
LoaderUtils.openURL("http://chefJones.com/store");
} else if (s.equals("Screenshot")) {
LoaderUtils.takeScreenShot();
}
}
private void loadClient(final Applet client) throws ClassNotFoundException,
InstantiationException, IllegalAccessException, IOException,
UnsupportedLookAndFeelException {
clientFrame = new JFrame("Loader");
clientFrame
.setIconImage(new ImageIcon(new URL(FRAME_IMAGE)).getImage());
clientFrame.getContentPane().setLayout(new BorderLayout());
clientPanel.setLayout(new BorderLayout());
clientPanel.add(client);
clientPanel.setPreferredSize(new Dimension(765, 503));
clientFrame.getContentPane().add(clientPanel, "Center");
clientFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
clientFrame.pack();
clientFrame.setVisible(true);
setVisible(false);
final JMenuBar jmenubar = new JMenuBar();
clientFrame.setJMenuBar(jmenubar);
Layout = new FlowLayout();
JFrame.setDefaultLookAndFeelDecorated(true);
/*JDialog.setDefaultLookAndFeelDecorated(true);
Button1 = new JButton("Screenshot");
Button2 = new JButton("Vote");
Button3 = new JButton("Forum");
Button6 = new JButton("Upgrades");
jmenubar.setLayout(Layout);
jmenubar.add(Button2);
jmenubar.add(Button3);
jmenubar.add(Button6);
jmenubar.add(Button1);
Button2.addActionListener(this);
Button3.addActionListener(this);
Button6.addActionListener(this);
Button1.addActionListener(this);
Button2.setBackground(Color.BLACK);
Button2.setForeground(Color.ORANGE);
Button2.setText("Forum");
Button3.setBackground(Color.BLACK);
Button3.setForeground(Color.ORANGE);
Button3.setText("Vote");
Button6.setBackground(Color.BLACK);
Button6.setForeground(Color.ORANGE);
Button6.setText("Upgrades");
Button1.setBackground(Color.BLACK);
Button1.setForeground(Color.ORANGE);
Button1.setText("Screenshot");*/
setFrameTheme();
}
}
我得到的错误：
java.lang.IllegalStateException: This method must be called on the Event Dispatch Thread
at org.pushingpixels.substance.api.SubstanceLookAndFeel.setSkin(SubstanceLookAndFeel.java:1970)
at org.pushingpixels.substance.api.SubstanceLookAndFeel.setSkin(SubstanceLookAndFeel.java:2086)
at loader.Loader.main(Loader.java:126)
请告诉我要更改或添加的内容。
谢谢。
答案 0 :(得分：2)
应在Event Dispatch Thread上构建和更改Swing GUI。见Concurrency in Swing＆amp;特别是Initial Threads了解详情。
以下是在E.D.T。上创建GUI的示例：
public static void main(String[] args) {
Runnable r = new Runnable() {
@Override
public void run() {
ImageTimeTunnel itt = new ImageTimeTunnel();
JFrame f = new JFrame("Image Time Tunnel");
f.add(itt.getGUI());
// Ensures JVM closes after frame(s) closed and
// all non-daemon threads are finished
f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
// ensures the frame is the minimum size it needs to be
// in order display the components within it
f.pack();
// See http://stackoverflow.com/a/7143398/418556 for demo.
// f.setLocationByPlatform(true);
f.setLocationRelativeTo(null);
// should be done last, to avoid flickering, moving,
// resizing artifacts.
f.setVisible(true);
}
};
// Swing GUIs should be created and updated on the EDT
// http://docs.oracle.com/javase/tutorial/uiswing/concurrency
SwingUtilities.invokeLater(r);
}
答案 1 :(得分：0)
我使用Eclipse，当我创建一个JFrame时，它会为事件调度线程生成一些代码。
尝试在main方法中使用它：
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
GraphiteGlassSkin darkSkin = new GraphiteGlassSkin();
SubstanceLookAndFeel.setSkin(darkSkin);
UIManager.setLookAndFeel("org.pushingpixels.substance.api.skin.SubstanceGraphiteGlassLookAndFeel");
Frame frame = new Frame();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
我相信这与安德鲁的代码一样，只不过在同一行创建和调用runnable。
我正在使用Substance 7.1.01。