我该怎么做全屏Java中的OSX [英] How can I do full screen in Java on OSX

问题描述

我一直在尝试和失败使用java全屏模式下OSX系统的主屏幕上。无论我试过我似乎无法摆脱从显示屏顶部的苹果菜单栏。我真的需要绘制整个屏幕。谁能告诉我如何摆脱菜单？

我已经附加其表现出的问题的示例类 - 我的系统上的菜单仍可见，我希望看到一个完全空白的屏幕

 进口java.awt中的*。
java.awt.event中导入*。
进口javax.swing.JFrame中;公共类FullScreenFrame扩展JFrame中实现的KeyListener {    公共FullScreenFrame（）{
    addKeyListener（本）;
    setUndecorated（真）;
    GraphicsDevice的GD = GraphicsEnvironment.getLocalGraphicsEnvironment（）getDefaultScreenDevice（）。    如果（gd.isFullScreenSupported（））{
    尝试{
    gd.setFullScreenWindow（本）;
    }
    最后{
    gd.setFullScreenWindow（NULL）;
    }
    }
    其他{
    通信System.err.println（全屏幕不支持）;
    }    调用setVisible（真）;
    }    公共无效的keyTyped（KeyEvent的E）{}
    公共无效键pressed（KeyEvent的E）{}
    公共无效调用keyReleased（KeyEvent的E）{
    调用setVisible（假）;
    处置（）;
    }    公共静态无效的主要（字串[] args）{
    新FullScreenFrame（）;
    }
}
 

解决方案

我觉得你的问题是在这里：

  {尝试
        gd.setFullScreenWindow（本）;
}
最后{
        gd.setFullScreenWindow（NULL）;
}
 

最后块总是执行，因此，这里所发生的是，你的窗口变为全屏进行短暂瞬间（如果），然后立即放弃屏幕。

此外，调用setVisible（真）是没有必要的，当你有previously名为 setFullScreenWindow（本）根据<一href=\"http://java.sun.com/javase/6/docs/api/java/awt/GraphicsDevice.html#setFullScreenWindow%28java.awt.Window%29\">Javadocs.

因此​​，我想构造改成这样：

 公共FullScreenFrame（）{
    addKeyListener（本）;    GraphicsDevice的GD =
            。GraphicsEnvironment.getLocalGraphicsEnvironment（）getDefaultScreenDevice（）;    如果（gd.isFullScreenSupported（））{
        setUndecorated（真）;
        gd.setFullScreenWindow（本）;
    }其他{
        通信System.err.println（全屏幕不支持）;
        的setSize（100，100）; //只是一些让你看到窗口
        调用setVisible（真）;
    }
}
 

I've been trying and failing to use the java full screen mode on the primary display of an OSX system. Whatever I've tried I can't seem to get rid of the 'apple' menu bar from the top of the display. I really need to paint over the entire screen. Can anyone tell me how to get rid of the menu?

I've attached an example class which exhibits the problem - on my system the menu is still visible where I would expect to see a completely blank screen.

import java.awt.*;
import java.awt.event.*;
import javax.swing.JFrame;

public class FullScreenFrame extends JFrame implements KeyListener {

    public FullScreenFrame () {
    	addKeyListener(this);
    	setUndecorated(true);
    	GraphicsDevice gd = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice();

    	if (gd.isFullScreenSupported()) {
    		try {
    			gd.setFullScreenWindow(this);
    		}
    		finally {
    			gd.setFullScreenWindow(null);
    		}
    	}
    	else {
    		System.err.println("Full screen not supported");
    	}

    	setVisible(true);
    }

    public void keyTyped(KeyEvent e) {}
    public void keyPressed(KeyEvent e) {}
    public void keyReleased(KeyEvent e) {
    	setVisible(false);
    	dispose();
    }

    public static void main (String [] args) {
    	new FullScreenFrame();
    }
}

解决方案

I think your problem is here:

try {
        gd.setFullScreenWindow(this);
}
finally {
        gd.setFullScreenWindow(null);
}

finally blocks are always executed, so what happens here is that you window becomes full screen for a brief instant (if that) and then relinquishes the screen immediately.

Also, setVisible(true) is not necessary when you have previously called setFullScreenWindow(this), according to the Javadocs.

So I would change the constructor to this:

public FullScreenFrame() {
    addKeyListener(this);

    GraphicsDevice gd =
            GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice();

    if (gd.isFullScreenSupported()) {
        setUndecorated(true);
        gd.setFullScreenWindow(this);
    } else {
        System.err.println("Full screen not supported");
        setSize(100, 100); // just something to let you see the window
        setVisible(true);
    }
}

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