如何让JFrame真正全屏？
在我的Java应用程序中，我尝试使用以下代码使JFrame真正全屏：
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消耗整个屏幕的JFrame呢？
编辑我必须补充说我想从eclipse插件调用那个JFrame。
我还没有尝试过，但Java有全屏API，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video或电影播放器或动画播放器，以下技巧将无效。 好的，这是我经过多次尝试后发现的：
假设你想按一个按钮（称为fullscreenButton）来制作全屏JFrame（称为帧）。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：使用宽度，高度变量让你有进一步调整的自由。
最好的方法是使用int vars代替- 40例如sheight/swidth - margin等。
此边距应来自参数表。 完全控制情况。
也可以直接使用： setBounds(0,0,screenSize.width, screenSize.height);
使用com.apple.eawt.FullScreenUtilities。 并确保测试系统是否正在运行Mac OS。
public void enableFullscreen(Window window, boolean bool) { if (System.getProperty("os.name").startsWith("Mac OS")) { com.apple.eawt.FullScreenUtilities.setWindowCanFullScreen(window, bool); } }