普通菜单

  1.     @Override
  2.     public void start(Stage primaryStage) throws Exception {
  3.         AnchorPane an = new AnchorPane();
  4.         an.setStyle("-fx-background-color:#ffffff");
  6.         MenuBar menuBar = new MenuBar();
  8.         Menu menu1 = new Menu("Menu1");
  9.         Menu menu2 = new Menu("Menu2");
  10.         Menu menu3 = new Menu("Menu3");
  11.         Menu menu4 = new Menu("Menu4");
  13.         MenuItem item1 = new MenuItem("MenuItem1");
  14.         MenuItem item2 = new MenuItem("MenuItem2");
  15.         MenuItem item3 = new MenuItem("MenuItem3");
  16.         MenuItem item4 = new MenuItem("MenuItem4");
  18.         menu1.getItems().addAll(item1,item2,item3,item4);
  19.         menuBar.getMenus().addAll(menu1,menu2,menu3,menu4);
  21.         //menu1.setOnShown();//监听菜单栏显示
  22.         //menu1.setOnHidden();//监听菜单栏隐藏
  24.         item1.setOnAction(new EventHandler<ActionEvent>() {
  25.             @Override
  26.             public void handle(ActionEvent event) {
  27.                 //监听点击
  28.             }
  29.         });
  31.         an.getChildren().addAll(menuBar);
  32.         Scene scene = new Scene(an);
  33.         primaryStage.setScene(scene);
  34.         primaryStage.setHeight(400);
  35.         primaryStage.setWidth(400);
  36.         primaryStage.show();
  37.     }

image.png image.png

菜单之间添加分割线(SeparatorMenuItem

  1. SeparatorMenuItem separatorMenuItem = new SeparatorMenuItem();//菜单栏间的分割线
  2. MenuBar menuBar = new MenuBar();
  4. Menu menu1 = new Menu("普通菜单");
  6. //普通菜单
  7. MenuItem item1 = new MenuItem("MenuItem1");
  8. MenuItem item2 = new MenuItem("MenuItem2");
  9. MenuItem item3 = new MenuItem("MenuItem3");
  11. menu1.getItems().addAll(item1,separatorMenuItem,item2,item3);

在菜单项上显示控件

  1. SeparatorMenuItem separatorMenuItem = new SeparatorMenuItem();//菜单栏间的分割线
  2. MenuBar menuBar = new MenuBar();
  4. Menu menu = new Menu("普通菜单");
  6. //普通菜单
  7. MenuItem item1 = new MenuItem("MenuItem1");
  8. MenuItem item2 = new MenuItem("MenuItem2");
  9. MenuItem item3 = new MenuItem("MenuItem3");
  10. //将一个按钮嵌在Item中
  11. CustomMenuItem item4 = new CustomMenuItem();
  12. Button button = new Button("button");
  13. item4.setContent(button);
  15. menu.getItems().addAll(item1,separatorMenuItem,item2,item3,item4);

单选菜单

  1. Menu menu2 = new Menu("单选菜单");
  3. //单选菜单
  4. ToggleGroup tg = new ToggleGroup();
  5. RadioMenuItem rmi1 = new RadioMenuItem("RadioItem1");
  6. RadioMenuItem rmi2 = new RadioMenuItem("RadioItem2");
  7. RadioMenuItem rmi3 = new RadioMenuItem("RadioItem3");
  8. RadioMenuItem rmi4 = new RadioMenuItem("RadioItem4");
  9. tg.getToggles().addAll(rmi1,rmi2,rmi3,rmi4);
  10. menu2.getItems().addAll(rmi1,rmi2,rmi3,rmi4);
  12. tg.selectedToggleProperty().addListener(new ChangeListener<Toggle>() {
  13.     @Override
  14.     public void changed(ObservableValue<? extends Toggle> observable, Toggle oldValue, Toggle newValue) {
  15.         //监听选中的项
  16.         if (newValue.equals(rmi1)){
  17.             System.out.println(1);
  18.         }else if (newValue.equals(rmi2)){
  19.             System.out.println(1);
  20.         }else if (newValue.equals(rmi3)){
  21.             System.out.println(1);
  22.         }else if (newValue.equals(rmi4)){
  23.             System.out.println(1);
  24.         }
  25.     }
  26. });

image.png

多选菜单

  1. Menu menu3 = new Menu("多选菜单");
  3. //多选菜单
  4. CheckMenuItem cmi1 = new CheckMenuItem("选项一");
  5. CheckMenuItem cmi2 = new CheckMenuItem("选项二");
  6. CheckMenuItem cmi3 = new CheckMenuItem("选项三");
  7. menu3.getItems().addAll(cmi1,cmi2,cmi3);
  8. menuBar.getMenus().addAll(menu1,menu2,menu3);

image.png

右键菜单

  1. Button rightClickMenuBtn = new Button("点击鼠标右键弹出菜单");
  2. MenuItem i1 = new MenuItem("MenuItem1");
  3. MenuItem i2 = new MenuItem("MenuItem2");
  4. MenuItem i3 = new MenuItem("MenuItem3");
  5. ContextMenu ctMenu = new ContextMenu();
  6. ctMenu.getItems().addAll(i1,i2,i3);
  8. rightClickMenuBtn.setContextMenu(ctMenu);
  9. AnchorPane.setTopAnchor(rightClickMenuBtn,60.0);
  10. //监听右键菜单弹出事件
  11. rightClickMenuBtn.setOnContextMenuRequested(new EventHandler<ContextMenuEvent>() {
  12.     @Override
  13.     public void handle(ContextMenuEvent event) {
  14.         System.out.println("菜单弹出");
  15.     }
  16. });
  18. an.getChildren().addAll(rightClickMenuBtn);
  19. Scene scene = new Scene(an);
  20. primaryStage.setScene(scene);
  21. primaryStage.setHeight(400);
  22. primaryStage.setWidth(400);
  23. primaryStage.show();

image.png

常见问题

监听菜单（Menu）的点击事件

如图：我们想要Menu1作为一个普通的按钮，点击后执行我们想要执行的业务逻辑，而不是弹出子菜单
JavaFX 菜单栏 - 图6

解决方案：在菜单上添加一个Lable，然后监听Lable的点击事件

  1. Menu menu1 = new Menu();
  2. Label lable = new Label("Menu1");
  3. menu1.setGraphic(lable);
  4. lable.setOnMouseClicked(event -> {
  5.       System.out.println("点击了该菜单")
  6. });