JavaFX：无论何时显示应用程序，如何更改组件 node 位置

我正在编写一个程序，当它启动时，其中一个锚定面板会在光标位置处打开.我用一个方法创建了它，该方法在初始化()中被调用，并且运行良好.问题是，基本上，当我隐藏PrimiyStage或关闭它，并再次实例化一个stage以显示时，它将不再获得光标位置，并且UI一直显示在第一次相同的位置.就像控制器一直在运行一样.有人知道为什么会发生这种事吗？我怎么才能解决这个问题呢？ 有没有一种方法可以在锚定面板启动或可见时更改控制器中的位置？还是停止那些一直在运行的东西？让它保持开放的解决方案对性能会更好.我正在使用JnativeHook来调用它，并使用SceneBuilder. 谢谢. JDK 21,JAVAFX 21.0.1,JNativeHook 2.2.2.

主要内容:

package MRE;

import java.io.IOException;
import com.github.kwhat.jnativehook.GlobalScreen;
import com.github.kwhat.jnativehook.NativeHookException;
import com.github.kwhat.jnativehook.keyboard.NativeKeyEvent;
import com.github.kwhat.jnativehook.keyboard.NativeKeyListener;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import javafx.stage.StageStyle;


public class Main extends Application implements NativeKeyListener{


private Stage primaryStage;
public static boolean shortcutIsPressed;


public static void main(String[] args) {
    Platform.setImplicitExit(false);
    nativeKeyListener();
    
    
}

@Override
public void start(Stage primaryStage) throws Exception {
    
    
}

public void testStage() throws IOException {
    
    primaryStage = new Stage();
    Parent root = FXMLLoader.load(getClass().getResource("/MRE/test.fxml"));
    Scene scene = new Scene(root);
 
    //SHOW STAGE
    primaryStage.setAlwaysOnTop(true);
    primaryStage.setScene(scene);
    primaryStage.show();
   
    
    
  
 }

 
//JNATIVEHOOK///////////////////////////////////////////////////////////////////////

public void nativeKeyPressed(NativeKeyEvent e) {
 //   System.out.println("Key Pressed: " + NativeKeyEvent.getKeyText(e.getKeyCode()));
    
    Platform.runLater( () -> {
        
         if (e.getKeyCode() == NativeKeyEvent.VC_F5) {
             shortcutIsPressed = true;
        //   System.out.println("F5: " + isPressed);
             
             if(shortcutIsPressed = true) {
                    if(primaryStage == null) {
                        try {
                            testStage();
                            
                        } catch (IOException e1) {
                            
                            e1.printStackTrace();
                        }
                    }
                }
        }
         
         
         
    } );
   
}

public void nativeKeyReleased(NativeKeyEvent e) {
    System.out.println("Key Released: " + NativeKeyEvent.getKeyText(e.getKeyCode()));
    
    Platform.runLater( () -> {
        if (e.getKeyCode() == NativeKeyEvent.VC_F5) {
            shortcutIsPressed = false;
            
            if(primaryStage != null) {
                
                
                primaryStage.hide();
                primaryStage = null;
                
            //  Platform.exit();
            
            }
            
        }
        
        
        
    });
}





public void nativeKeyTyped(NativeKeyEvent e) {
//    System.out.println("Key Typed: " + NativeKeyEvent.getKeyText(e.getKeyCode()));
}




public static void nativeKeyListener() {
    //NATIVEKEYLISTENER
            try {
                GlobalScreen.registerNativeHook();
            }
            catch (NativeHookException ex) {
                System.err.println("There was a problem registering the native hook.");
                System.err.println(ex.getMessage());
                System.exit(1);
            }
            
            GlobalScreen.addNativeKeyListener(new Main());
}





}

控制器:

package MRE;

import java.io.IOException;

import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.layout.AnchorPane;

public class Controller {


@FXML
private AnchorPane aPaneInside;

@FXML
private AnchorPane aPaneOutside;

@FXML
private Button btn;

    
public void initialize() throws IOException {   
    
    setUiPosition();

}


public void setUiPosition() {
    aPaneInside.setLayoutX(Utils.cursorPoint.getX()-aPaneInside.getPrefWidth()/2);
    aPaneInside.setLayoutY(Utils.cursorPoint.getY()-aPaneInside.getPrefHeight()/2);
}


}

实用程序:

    package MRE;
    
    import java.awt.MouseInfo;
    import java.awt.Point;
    
    public class Utils {
        
        public static Point cursorPoint = MouseInfo.getPointerInfo().getLocation();
        
            
    }

FXML:

    <?xml version="1.0" encoding="UTF-8"?>
    
    <?import javafx.scene.control.Button?>
    <?import javafx.scene.layout.AnchorPane?>
    
    <AnchorPane fx:id="aPaneOutside" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="1080.0" prefWidth="1920.0" xmlns="http://javafx.com/javafx/21" xmlns:fx="http://javafx.com/fxml/1" fx:controller="MRE.Controller">
       <children>
          <AnchorPane fx:id="aPaneInside" layoutX="860.0" layoutY="440.0" prefHeight="200.0" prefWidth="200.0" style="-fx-background-color: blue;">
             <children>
                <Button fx:id="btn" layoutX="74.0" layoutY="88.0" mnemonicParsing="false" text="Button" />
             </children>
          </AnchorPane>
       </children>
    </AnchorPane>

模块信息:

module MRE {
requires javafx.fxml;
requires javafx.graphics;
requires javafx.controls;
requires java.desktop;
requires com.github.kwhat.jnativehook;


opens MRE to javafx.graphics, javafx.fxml;


}