原生Swing菜单栏支持MacOS X在Java中

Question

一个突出的链接是http://www.devdaily.com/blog/post/jfc-swing/handling-main-mac-menu-in-swing-application/但是Mac OS X下的菜单栏显示为包名称而不是应用程序名称.我正在使用上面链接中的代码而没有任何运气,所以我不确定在最近的Mac OS版本中是否有任何改变.

这是一个摘录:

public RootGUI() {
    super("Hello");
    JMenuBar menuBar = new JMenuBar();
    JMenu file = new JMenu("File");
    JMenuItem item = new JMenuItem("Woah");
    file.add(item);
    menuBar.add(file);
    setJMenuBar(menuBar);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setSize(100, 100);
    pack();
    setVisible(true);
}

public static void main(String[] args) {
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
        public void run() {
            try {
                System.setProperty("apple.laf.useScreenMenuBar", "true");
                System.setProperty("com.apple.mrj.application.apple.menu.about.name", "Test");
                UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                new RootGUI();
            }
            catch(ClassNotFoundException e) {
                System.out.println("ClassNotFoundException: " + e.getMessage());
            }
            catch(InstantiationException e) {
                System.out.println("InstantiationException: " + e.getMessage());
            }
            catch(IllegalAccessException e) {
                System.out.println("IllegalAccessException: " + e.getMessage());
            }
            catch(UnsupportedLookAndFeelException e) {
                System.out.println("UnsupportedLookAndFeelException: " + e.getMessage());
            }

        }
    });
}

菜单栏上的第一个菜单项应显示为"test",遗憾的是情况并非如此.另一方面,文件菜单工作正常.有任何想法吗？

Answer 1

@Kezzer

我想我知道发生了什么.如果将main()方法放在不同的类中,那么一切正常.所以你需要这样的东西:

public class RootGUILauncher {
  public static void main(String[] args) {
    try {
                System.setProperty("apple.laf.useScreenMenuBar", "true");
                System.setProperty("com.apple.mrj.application.apple.menu.about.name", "Test");
                UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        }
        catch(ClassNotFoundException e) {
                System.out.println("ClassNotFoundException: " + e.getMessage());
        }
        catch(InstantiationException e) {
                System.out.println("InstantiationException: " + e.getMessage());
        }
        catch(IllegalAccessException e) {
                System.out.println("IllegalAccessException: " + e.getMessage());
        }
        catch(UnsupportedLookAndFeelException e) {
                System.out.println("UnsupportedLookAndFeelException: " + e.getMessage());
        }
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
        public void run() {
            new RootGUI();
        }
    });
}

然后将RootGUI类放在不同的文件中.

Answer 2

你需要在主线程中设置"com.apple.mrj.application.apple.menu.about.name"系统属性,而不是在Swing线程中设置(换句话说,只需将它作为程序中的第一行).