Agfdhyk

My program dynamically builds .fxml views and controller classes (.java) for each view upon input from a text file. It also generates input objects (ComboBoxes, TextFields, & Buttons) for each view based on what it reads.

Since the classes are being built and compiled at runtime, I also need to make handler functions for each input object at runtime.

The problem occurs with the 'onAction' keyword in the .fxml views. When I use this keyword for linking the functions, the views that it affects no longer appear. Other views that do not need handler functions remain visible.

Am I not linking my controller to each view correctly? Is there another method for use of dynamically-built functions from dynamically-built classes?

Do I need to set 'fx:controller="view#Controller"' for each view within its .fxml file? When I tried setting this value, I was no longer able to load the classes at runtime using this method.

My goal is to be able to use the functions for each button in each controller class.

My method for dynamically loading each controller class:

(Excerpt Of) mainController.java

public Object getClass(Path javaClass, String className){





    try{

    URL classURL = javaClass.getParent().toFile().toURI().toURL();

    URLClassLoader classLoader = URLClassLoader.newInstance(new URL{classURL});

    Class<?> clazz = Class.forName(className, true, classLoader);



    return clazz.newInstance();

    }

    catch(MalformedURLException e){

        e.printStackTrace();

    }

    catch(ClassNotFoundException e){

        e.printStackTrace();

    }

    catch(IllegalAccessException e ){

        e.printStackTrace();

    }

    catch(InstantiationException e){

        e.printStackTrace();

    }



    return null;

}

view_One.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.layout.BorderPane?>

<?import javafx.scene.control.Label?>

<?import javafx.scene.control.Button?>

<?import javafx.geometry.Insets?>

<?import javafx.scene.control.ComboBox?>

<?import javafx.scene.layout.GridPane?>

<?import javafx.scene.control.TextArea?>

<?import javafx.scene.control.TextField?>



<BorderPane xmlns:fx="http://javafx.com/fxml/1">

<top>

<Label text="First View"/>

</top>

<center>



<GridPane>



<padding><Insets top="25" right="25" bottom="25" left="25"/></padding>



 <Label text="Obj1" GridPane.columnIndex="1" GridPane.rowIndex="0"/> 

 <TextField id="OneTextField1" GridPane.columnIndex="2" GridPane.rowIndex="0"/> 

 <Button fx:id="OneButton1" text="Change" GridPane.columnIndex="3" GridPane.rowIndex="0" onAction="#OneButton1Handle"/> 



 <Label text="Obj2" GridPane.columnIndex="1" GridPane.rowIndex="1"/> 

 <TextField id="OneTextField2" GridPane.columnIndex="2" GridPane.rowIndex="1"/> 

 <Button fx:id="OneButton2" text="Change" GridPane.columnIndex="3" GridPane.rowIndex="1" onAction="#OneButton2Handle"/> 



 <Label text="Obj3" GridPane.columnIndex="1" GridPane.rowIndex="2"/> 

 <ComboBox id="OneButtonTextField3" GridPane.columnIndex="2" GridPane.rowIndex="2"/> 

 <Button fx:id="OneButton3" text="Change" GridPane.columnIndex="3" GridPane.rowIndex="2" onAction="#OneButton3Handle"/> 



</GridPane> 

</center>



</BorderPane>

view_OneController.java

import java.util.ResourceBundle;

import javafx.fxml.Initializable;

import javafx.fxml.FXML; 

public class view_OneController  {



public void initialize() {





}

@FXML

 public void OneButton1Handle(){

OneButton1.setText("Pressed");

}

@FXML

 public void OneButton2Handle(){

OneButton2.setText("Pressed");

}

@FXML

 public void OneButton3Handle(){

OneButton3.setText("Pressed");

}





}