javaFX开发exe，升级复习（笔记，第七节） HBox和VBox

第七节） HBox和VBox"/>

javaFX开发exe，升级复习（笔记，第七节） HBox和VBox

控件 消失站位，消失不站位

package fx;import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;public class Mian extends Application{static boolean isManaged=false;static boolean isVisible=false;static double opactiyValue=0;public static void main(String[] args) {// TODO 自动生成的方法存根launch(args);}public void start(Stage  stage) throws Exception {// TODO 自动生成的方法存根Button b1=new Button("b1");Button b2=new Button("b2");Button b3=new Button("b3");Button b4=new Button("b4");Button b5=new Button("b3.setManaged(false)");Button b6=new Button("b3.setVisible(false)");Button b7=new Button("b3.setOpacity(0)");
//		  b3.setManaged(false);
//		  b3.setVisible(false);
//		  b3.setOpacity(0);AnchorPane ap=new AnchorPane();HBox hbox=new HBox();hbox.setPadding(new Insets(10));hbox.setSpacing(10);hbox.getChildren().addAll(b1,b2,b3,b4);VBox vbox=new VBox();ap.setTopAnchor(vbox,100.0);ap.setLeftAnchor(vbox, 20.0);vbox.getChildren().addAll(b5,b6,b7);ap.getChildren().addAll(hbox,vbox);Scene scene=new Scene(ap);stage.setScene(scene);stage.setWidth(800);stage.setHeight(800);stage.setTitle("javafx_总结");stage.show();b5.setOnAction(new EventHandler<ActionEvent>() {@Overridepublic void handle(ActionEvent event) {b3.setManaged(isManaged);new Print(hbox);if(isManaged==true){isManaged=false;b5.setText("b3.setManaged("+isManaged+")");}else {isManaged=true;b5.setText("b3.setManaged("+isManaged+")");} }});b6.setOnAction(new EventHandler<ActionEvent>() {@Overridepublic void handle(ActionEvent event) {// TODO 自动生成的方法存根b3.setOpacity(opactiyValue);new Print(hbox);if(opactiyValue==0){opactiyValue=1;b7.setText("b3.setOpacity("+opactiyValue+")");}else {opactiyValue=0;b7.setText("b3.setOpacity("+opactiyValue+")");} }});b7.setOnAction(new EventHandler<ActionEvent>() {@Overridepublic void handle(ActionEvent event) {// TODO 自动生成的方法存根b3.setVisible(isVisible);;new Print(hbox);if(isVisible==true){isVisible=false;b6.setText("b3.isVisible("+isVisible+")");}else {isVisible=true;b5.setText("b3.isVisible("+isVisible+")");}}});}}
class Print{public Print(HBox hBox) {System.out.println("当前Bbox子组件数量="+hBox.getChildren().size());}
}