在我的 Java 应用程序中，我尝试使用以下代码使 JFrame 真正全屏显示：
public class MainFrame extends JFrame {
private static final long serialVersionUID = 1L;
public MainFrame() {
super();
this.setTitle();
this.setUndecorated(true);
this.setExtendedState(JFrame.MAXIMIZED_BOTH);
this.setVisible(true);
//this.pack();
}
}
但在我的 Mac 上，我仍然可以看到 Dock 和 OSX 的顶部工具栏。那么如何创建一个真正占用整个屏幕的 JFrame？
编辑 我必须补充一点，我想从 Eclipse 插件中调用该 JFrame。
我还没有尝试过，但是 Java 有全屏 API，应该可以满足您的需求：
http://docs.oracle.com/javase/tutorial/extra/fullscreen/index.html
我知道答案。首先，我必须承认，如果您正在制作视频或电影播放器或动画播放器，以下技巧将不起作用。好的，这是我经过多次尝试后发现的：
假设您想在按下按钮（称为 fullscreenButton）时使 JFrame（称为框架）全屏。然后执行以下操作：
import java.awt.*;
import javax.swing.*;
public class FullscreenJFrame extends JFrame{
private JPanel contentPane = new JPanel();
private JButton fullscreenButton = new JButton("Fullscreen Mode");
private boolean Am_I_In_FullScreen = false;
private int PrevX,PrevY,PrevWidth,PrevHeight;
public static void main(String[] args) {
FullscreenJFrame frame = new FullscreenJFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(600,500);
frame.setVisible(true);
}
public FullscreenJFrame(){
super("My FullscreenJFrame");
setContentPane(contentPane);
//From Here starts the trick
FullScreenEffect effect = new FullScreenEffect();
fullscreenButton.addActionListener(effect);
contentPane.add(fullscreenButton);
fullscreenButton.setVisible(true);
}
private class FullScreenEffect implements ActionListener{
@Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
if(Am_I_In_FullScreen == false){
PrevX = getX();
PrevY = getY();
PrevWidth = getWidth();
PrevHeight = getHeight();
dispose(); //Destroys the whole JFrame but keeps organized every Component
//Needed if you want to use Undecorated JFrame
//dispose() is the reason that this trick doesn't work with videos
setUndecorated(true);
setBounds(0,0,getToolkit().getScreenSize().width,getToolkit().getScreenSize().height);
setVisible(true);
Am_I_In_FullScreen = true;
}
else{
setVisible(true);
setBounds(PrevX, PrevY, PrevWidth, PrevHeight);
dispose();
setUndecorated(false);
setVisible(true);
Am_I_In_FullScreen = false;
}
}
}
}
我希望你喜欢它
一个例子：
import java.awt.FlowLayout;
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.JFrame;
public class FullScreenJFrame extends JFrame{
private GraphicsDevice vc;
public FullScreenJFrame(){
super();
GraphicsEnvironment e = GraphicsEnvironment.getLocalGraphicsEnvironment();
vc= e.getDefaultScreenDevice();
JButton b = new JButton("exit");
b.addActionListener(
new ActionListener(){
public void actionPerformed(ActionEvent arg0) {
dispose();
System.exit(0);
}
}
);
this.setLayout(new FlowLayout());
this.add(b);
setFullScreen(this);
}
public void setFullScreen(JFrame f){
f.setUndecorated(true);
f.setResizable(false);
vc.setFullScreenWindow(f);
}
public static void main(String[] args){
new FullScreenJFrame();
}
}
private Dimension screenSize; /* class level vars */
private swidth , sheight;
/*In GUI creating method:put this code: */
screenSize = Toolkit.getDefaultToolkit().getScreenSize();
sheight = screenSize.height;
swidth = screenSize.width;
setBounds(0, 0, swidth, sheight-40);
注意：使用 swidth、sheight 变量可以让您自由进一步调整。
最好的方法是使用intvars 代替- 40egsheight/swidth - margin等。
这里的边距应该来自参数表。全面掌控局面。
也可以直接使用：setBounds(0,0,screenSize.width, screenSize.height);
使用 com.apple.eawt.FullScreenUtilities。并确保测试系统正在运行 Mac OS。
public void enableFullscreen(Window window, boolean bool) {
if (System.getProperty("os.name").startsWith("Mac OS")) {
com.apple.eawt.FullScreenUtilities.setWindowCanFullScreen(window, bool);
}
}