当主阶段关闭时JavaFX隐藏任务栏图标

Question

我关注了this tutorial创建带有托盘图标的应用程序。当我关闭应用程序窗口时，任务栏上留下一个图标。问题是如何在关闭窗口时隐藏任务栏上的图标？如果不可能，那么当我单击任务栏图标时是否有办法恢复窗口？跨平台解决方案将不胜感激。

Answer 1

The gist您链接到的内容包含您正在寻找的一切。

1. 重新打开JavaFX窗口的方法(涉及两部分):

   • Lines 39-40 :

     // instructs the javafx system not to exit implicitly when the last application window is shut.
     Platform.setImplicitExit(false);
     

   • Lines 106-112 :

     // if the user double-clicks on the tray icon, show the main app stage. 
     trayIcon.addActionListener(event -> Platform.runLater(this::showStage));
     
     // if the user selects the default menu item (which includes the app name), 
     // show the main app stage. 
     java.awt.MenuItem openItem = new java.awt.MenuItem("hello, world"); 
     openItem.addActionListener(event -> Platform.runLater(this::showStage));
     

2. 完全退出应用程序的方法:

   • Lines 120-128 :

     // to really exit the application, the user must go to the system tray icon
     // and select the exit option, this will shutdown JavaFX and remove the
     // tray icon (removing the tray icon will also shut down AWT).
     java.awt.MenuItem exitItem = new java.awt.MenuItem("Exit");
     exitItem.addActionListener(event -> {
         notificationTimer.cancel();
         Platform.exit();
         tray.remove(trayIcon);
     });