最終效果

代碼

寫在一個類里面

package cn.zxl.StackPane;import javafx.application.Application; import javafx.event.EventHandler; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.input.MouseEvent; import javafx.scene.layout.StackPane; import javafx.stage.Stage;/*** @Description: //TODO* @Author: zhangxueliang* @Create: 2021-05-27 09:04* @Version: 1.0**/ public class MyStackPane extends Application implements EventHandler<MouseEvent> {Button btn;@Overridepublic void start(Stage primaryStage) throws Exception {btn = new Button("你好");btn.setOnMouseClicked(this);StackPane stackPane = new StackPane();stackPane.getChildren().add(btn);Scene scene = new Scene(stackPane, 200, 200);scene.setOnMousePressed(this);primaryStage.setScene(scene);primaryStage.show();}public static void main(String[] args) {launch(args);}@Overridepublic void handle(MouseEvent event) {if (event.getSource()==btn){System.out.println("你點擊的是按鈕");}else {System.out.println("你點擊了場景");}} }

也可以單獨提取出事件監聽類

按鈕事件監聽類

package cn.zxl.StackPane;import javafx.event.EventHandler; import javafx.scene.control.Button; import javafx.scene.input.MouseEvent;/*** @Description: //TODO* @Author: zhangxueliang* @Create: 2021-05-27 09:20* @Version: 1.0**/ public class MyMouseEvent implements EventHandler<MouseEvent> {@Overridepublic void handle(MouseEvent event) {System.out.println("你點擊的是按鈕");} }

場景事件監聽類

package cn.zxl.StackPane;import javafx.event.EventHandler; import javafx.scene.input.MouseEvent;/*** @Description: //TODO* @Author: zhangxueliang* @Create: 2021-05-27 09:24* @Version: 1.0**/ public class SceneMouseEvent implements EventHandler<MouseEvent> {@Overridepublic void handle(MouseEvent event) {System.out.println("你點擊的是場景");} }

調用

package cn.zxl.StackPane;import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.layout.StackPane; import javafx.stage.Stage;/*** @Description: //TODO* @Author: zhangxueliang* @Create: 2021-05-27 09:04* @Version: 1.0**/ public class MyStackPane2 extends Application{Button btn;@Overridepublic void start(Stage primaryStage) throws Exception {btn = new Button("你好");btn.setOnMouseClicked(new MyMouseEvent());StackPane stackPane = new StackPane();stackPane.getChildren().add(btn);Scene scene = new Scene(stackPane, 200, 200);scene.setOnMousePressed(new SceneMouseEvent());primaryStage.setScene(scene);primaryStage.show();}public static void main(String[] args) {launch(args);} }

匿名內部類方式（推薦）

package cn.zxl.StackPane;import javafx.application.Application; import javafx.event.EventHandler; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.input.MouseEvent; import javafx.scene.layout.StackPane; import javafx.stage.Stage;/*** @Description: //TODO* @Author: zhangxueliang* @Create: 2021-05-27 09:04* @Version: 1.0**/ public class MyStackPane3 extends Application{Button btn;@Overridepublic void start(Stage primaryStage) throws Exception {btn = new Button("你好");btn.setOnMouseClicked(new EventHandler<MouseEvent>() {@Overridepublic void handle(MouseEvent event) {System.out.println("你點擊的是按鈕");}});StackPane stackPane = new StackPane();stackPane.getChildren().add(btn);Scene scene = new Scene(stackPane, 200, 200);scene.setOnMousePressed(new EventHandler<MouseEvent>() {@Overridepublic void handle(MouseEvent event) {System.out.println("你點擊的是場景");}});primaryStage.setScene(scene);primaryStage.show();}public static void main(String[] args) {launch(args);} }

lambda表達式（新手不推薦）

package cn.zxl.StackPane;import javafx.application.Application; import javafx.event.EventHandler; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.input.MouseEvent; import javafx.scene.layout.StackPane; import javafx.stage.Stage;/*** @Description: //TODO* @Author: zhangxueliang* @Create: 2021-05-27 09:04* @Version: 1.0**/ public class MyStackPane4 extends Application{Button btn;@Overridepublic void start(Stage primaryStage) throws Exception {btn = new Button("你好");btn.setOnMouseClicked(event -> {System.out.println("你點擊的是按鈕");});StackPane stackPane = new StackPane();stackPane.getChildren().add(btn);Scene scene = new Scene(stackPane, 200, 200);scene.setOnMousePressed(event -> {System.out.println("你點擊的是場景");});primaryStage.setScene(scene);primaryStage.show();}public static void main(String[] args) {launch(args);} }

總結

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