Develop Reference

How to close primaryStage and open new stage?

I have tried researching various pages regarding how to switch scenes or even stages with no luck to help my specific case. I am trying to create a program with a login form that manages a school library.
I have a login form that authenticates the user input with the method validateLogin(). If the login is successful (i.e. isLoginSuccess = true), I want my program to close primaryStage and open a new stage/window with the library management system.
Is it better to switch the scene on primaryStage or close primaryStage and open a new stage? How do you do that and should you do that from Main.java or is it fine to do it from LoginController.java? I'm having trouble switching scenes or even just creating a new stage from LoginController.java since primaryStage isn't recognized in that class.
Main.java
package sample;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
public class Main extends Application
{
#Override
public void start(Stage primaryStage) throws Exception
{
Parent root = FXMLLoader.load(getClass().getResource("login.fxml"));
primaryStage.initStyle(StageStyle.UNDECORATED);
primaryStage.setScene(new Scene(root, 520, 400));
primaryStage.setResizable(false);
primaryStage.show();
}
//main() method is ignored in correctly deployed JavaFX application.
public static void main(String[] args)
{
launch(args);
}
}
LoginController.java
package sample;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.PasswordField;
import javafx.scene.control.TextField;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;
import javafx.event.ActionEvent;
import javafx.stage.StageStyle;
import java.io.File;
import java.util.ResourceBundle;
//Can be removed, StackOverflow import
import java.io.BufferedReader;
import java.io.FileReader;
import java.net.URL;
public class LoginController implements Initializable
{
#FXML
private Button cancelButton;
#FXML
private Label loginMessageLabel;
#FXML
private ImageView brandingImageView;
#FXML
private ImageView lockImageView;
#FXML
private TextField usernameTextField;
#FXML
private PasswordField enterPasswordField;
#Override
public void initialize(URL url, ResourceBundle resourceBundle)
{
File brandingFile = new File("Images/LibManager.png");
Image brandingImage = new Image(brandingFile.toURI().toString());
brandingImageView.setImage(brandingImage);
File lockFile = new File("Images/LoginLock.png");
Image lockImage = new Image(lockFile.toURI().toString());
lockImageView.setImage(lockImage);
}
//Activates validateLogin() if there is input in text fields.
public void loginButtonOnAction(ActionEvent event)
{
if (usernameTextField.getText().isBlank() == false && enterPasswordField.getText().isBlank() == false)
{
validateLogin();
}
else
{
loginMessageLabel.setText("Please enter username and password");
}
}
//Closes login window.
public void cancelButtonOnAction(ActionEvent event)
{
Stage stage = (Stage) cancelButton.getScene().getWindow();
stage.close();
}
//Compares user input to txt file contents to authenticate.
public void validateLogin() {
{
try {
String location = "userdatabase.txt";
String username = usernameTextField.getText();
String password = enterPasswordField.getText();
FileReader fr = new FileReader(location);
BufferedReader br = new BufferedReader(fr);
String line, user, pass;
boolean isLoginSuccess = false;
while ((line = br.readLine()) != null) {
user = line.split(" ")[1].toLowerCase();
pass = line.split(" ")[2].toLowerCase();
if (user.equals(usernameTextField.getText()) && pass.equals(enterPasswordField.getText())) {
isLoginSuccess = true;
break;
}
}
if (!isLoginSuccess)
{
/*
public void startLibManager(Stage primaryStage) {
FXMLLoader loader = new FXMLLoader(getClass().getResource("LibDatabase.fxml"));
Parent mainCallWindowFXML = loader.load();
secondaryStage.initStyle(StageStyle.UNDECORATED);
secondaryStage.setScene(new Scene(root, 520, 400));
secondaryStage.setResizable(false);
secondaryStage.show();
}
*/
/*
//use one of the components on your scene to get a reference to your scene object.
Stage stage = (Stage)tfCallerName.getScene.getWindow();//or use any other component in your controller
Scene mainCallWindow = new Scene (mainCallWindowFXML, 800, 600);
stage.setScene(newCallDetails);
stage.show(); //this line may be unnecessary since you are using the same stage.
*/
}
fr.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
login.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.PasswordField?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.image.Image?>
<?import javafx.scene.image.ImageView?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.BorderPane?>
<BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="520.0" style="-fx-background-color: #FFFFFF;" xmlns="http://javafx.com/javafx/15.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.LoginController">
<left>
<AnchorPane prefHeight="407.0" prefWidth="227.0" BorderPane.alignment="CENTER">
<children>
<ImageView fx:id="brandingImageView" fitHeight="400.0" fitWidth="226.0" pickOnBounds="true" preserveRatio="true">
<image>
<Image url="#../../Images/LibManager.png" />
</image>
</ImageView>
</children></AnchorPane>
</left>
<right>
<AnchorPane prefHeight="400.0" prefWidth="332.0" style="-fx-background-color: FFFFFF;" BorderPane.alignment="CENTER">
<children>
<ImageView fx:id="lockImageView" fitHeight="32.0" fitWidth="46.0" layoutX="134.0" layoutY="65.0" pickOnBounds="true" preserveRatio="true">
<image>
<Image url="#../../Images/LoginLock.png" />
</image>
</ImageView>
<Label layoutX="23.0" layoutY="157.0" prefHeight="17.0" prefWidth="60.0" text="Username" textFill="#01989e" />
<TextField fx:id="usernameTextField" layoutX="96.0" layoutY="152.0" prefWidth="173.0" promptText="Username" />
<Label layoutX="26.0" layoutY="205.0" text="Password" textFill="#01989e" />
<PasswordField fx:id="enterPasswordField" layoutX="96.0" layoutY="200.0" prefHeight="27.0" prefWidth="173.0" promptText="Password" />
<Button fx:id="loginButton" layoutX="22.0" layoutY="294.0" mnemonicParsing="false" onAction="#loginButtonOnAction" prefHeight="27.0" prefWidth="249.0" style="-fx-background-color: ff914d;" text="Login" textFill="WHITE" />
<Button fx:id="cancelButton" layoutX="22.0" layoutY="342.0" mnemonicParsing="false" onAction="#cancelButtonOnAction" prefHeight="27.0" prefWidth="249.0" style="-fx-background-color: ff914d;" text="Cancel" textFill="WHITE" />
<Label fx:id="loginMessageLabel" layoutX="26.0" layoutY="248.0" prefHeight="17.0" prefWidth="160.0" textFill="RED" />
</children></AnchorPane>
</right>
</BorderPane>

#Loritt I might be a bit late, but I use this method to change scenes when using JavaFX.
If you are going to be changing back and forth between scene, this method keeps you from having to write redundant code.
Stage stage;
Parent scene;
public void switchViews(ActionEvent event, String fileLocation) throws IOException {
stage = (Stage) ((Button) event.getSource()).getScene().getWindow();
scene = FXMLLoader.load(getClass().getResource(fileLocation));
stage.setScene(new Scene(scene));
stage.show();
}
I usually put this method inside the controller class which is completely acceptable as it has to do with the controlling of the visuals in the application and not any business logic.
Also, when I was originally learning how to do this myself and then pass information between the scenes I used this video and youtuber who has some good content on JavaFX/Scene Builder. (Link: https://www.youtube.com/watch?v=XCgcQTQCfJQ)
Hope this helps answer your question.
Happy coding! :)

javafx fxml program error(no main method)

i'm fairly new to javafx and fxml. I'm trying to teach myself! However, when I was creating a program for a simple login GUI I came into an issue when I finally tried to run my program. It told me there was no main method in my class and I'm unsure of how to fix it. Any ideas?
My program creates a login screen and when you enter "test" for the username and password it'll take you to another scene.
Here is my Login.java
package com;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.stage.Stage;
import javafx.scene.Parent;
import javafx.scene.Scene;
/**
*
* #author Tyler
*/
public class Login extends Application{
#Override
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("Login.fxml"));
Scene scene = new Scene(root);
stage.setScene(scene);
stage.setTitle("Login");
stage.show();
}
}
Here is my LoginController.java
package com;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.PasswordField;
import javafx.scene.control.TextField;
import javafx.stage.Stage;
/**
* FXML Controller class
*
* #author Tyler
*/
public class LoginController implements Initializable {
#FXML
private Label lblMessage;
#FXML
private TextField txtUsername;
#FXML
private PasswordField txtPassword;
#FXML
private void btnLoginAction(ActionEvent event) throws Exception{
if(txtUsername.getText().equals("test") && txtPassword.getText().equals("test")){
((Node) (event.getSource())).getScene().getWindow().hide();
Parent parent = FXMLLoader.load(getClass().getResource("DateSelection.fxml"));
Stage stage = new Stage();
Scene scene = new Scene(parent);
stage.setScene(scene);
stage.setTitle("Date Selection");
stage.show();
}else{
lblMessage.setText("Username or Password is invalid!");
}
}
/**
* Initializes the controller class.
* #param url
* #param rb
*/
#Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
}
Here is my Login.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.text.*?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<AnchorPane id="AnchorPane" fx:id="lblMessage" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.LoginController">
<children>
<PasswordField fx:id="txtPassword" layoutX="200.0" layoutY="200.0" prefHeight="30.0" prefWidth="200.0" promptText="Password" />
<TextField fx:id="txtUsername" layoutX="200.0" layoutY="140.0" prefHeight="30.0" prefWidth="200.0" promptText="Username" />
<Button fx:id="btnLogin" layoutX="269.0" layoutY="251.0" mnemonicParsing="false" onAction="#btnLoginAction" prefHeight="30.0" text="Login">
<font>
<Font size="14.0" />
</font></Button>
<Label fx:id="lblMessage" layoutX="283.0" layoutY="71.0" text="Label" />
</children>
</AnchorPane>
Here is my DateSelectionController.java
package com;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.fxml.Initializable;
/**
* FXML Controller class
*
* #author Tyler
*/
public class DateSelectionController implements Initializable {
/**
* Initializes the controller class.
*/
#Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
}
Here is my DateSelection.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.text.*?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<AnchorPane id="AnchorPane" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/8" fx:controller="com.DateSelectionController">
<children>
<Label layoutX="191.0" layoutY="164.0" text="Welcome">
<font>
<Font name="System Bold" size="50.0" />
</font>
</Label>
</children>
</AnchorPane>

From Oracle:
The main() method is not required for JavaFX applications when the JAR file for the application is created with the JavaFX Packager tool, which embeds the JavaFX Launcher in the JAR file. However, it is useful to include the main() method so you can run JAR files that were created without the JavaFX Launcher, such as when using an IDE in which the JavaFX tools are not fully integrated. Also, Swing applications that embed JavaFX code require the main() method.
So one solution is to make sure it's being built in a way that fully supports the JavaFX tools. The other solution is to add a main method to starts the application. That would avoid any potential problems like this, and doesn't cause any problems in the case where it's not needed.
Your main method should look like this:
public static void main(String[] args){
Application.launch(Login.class, args);
}
That will simply pass control on to JavaFX to handle like it would normally.

Java Fx, Edit the textarea of a specific tab

Well, my question is simple.
I am building an application with Java Fx, and I have a TabPane.
When I open a new Tab, that Tab gets it's content by a fxml file.
tab.setContent((Node)FXMLLoader.load(this.getClass().getResource("/main/textEditor.fxml")))
Fine, that works well, it always loads the same file on all Tabs, so, all textarea on all tabs have the same id.
The problem is, with java, I can only get the information of the textarea of the first Tab.
How can i edit specifically the textarea of one tab in particular?
An example of what i want to do :
Main
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.geometry.Rectangle2D;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Screen;
import javafx.stage.Stage;
public class Main extends Application{
public static void main(String[] args) {
Application.launch(Main.class, args);
}
#Override
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("/tabPane/test.fxml"));
Screen screen = Screen.getPrimary();
Rectangle2D bounds = screen.getVisualBounds();
stage.setScene(new Scene(root));
stage.show();
}
}
test.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import java.lang.*?>
<?import java.net.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.text.*?>
<?import javafx.scene.layout.AnchorPane?>
<VBox prefHeight="400.0" prefWidth="640.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="tabPane.controller">
<children>
<MenuBar VBox.vgrow="NEVER">
<menus>
<Menu mnemonicParsing="false" onAction="#test" text="File">
<items>
<MenuItem fx:id="insert" mnemonicParsing="false" onAction="#test" text="Insert" />
</items>
</Menu>
</menus>
</MenuBar>
<AnchorPane maxHeight="-1.0" maxWidth="-1.0" prefHeight="-1.0" prefWidth="-1.0" VBox.vgrow="ALWAYS">
<children>
<Label alignment="CENTER" layoutX="155.0" layoutY="177.0" style="
" text="Drag components from Library here…" textAlignment="CENTER" textFill="#9f9f9f" wrapText="false">
<font>
<Font size="18.0" />
</font>
</Label>
<TabPane fx:id="tabPane" prefHeight="375.0" prefWidth="640.0" tabClosingPolicy="UNAVAILABLE">
<tabs>
<Tab text="Untitled Tab 1">
<content>
<TextArea fx:id="textarea" prefHeight="200.0" prefWidth="200.0" text="a" />
</content>
</Tab>
<Tab text="Untitled Tab 2">
<content>
<TextArea fx:id="textarea1" prefHeight="200.0" prefWidth="200.0" text="a" />
</content>
</Tab>
</tabs>
</TabPane>
</children>
</AnchorPane>
</children>
<stylesheets>
<URL value="#../../../../BasicApplicatio11n_css/BasicApplication.css" />
controller.java
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.TextArea;
public class controller implements Initializable{
#FXML
private TextArea textarea;
#Override
public void initialize(URL arg0, ResourceBundle arg1) {
}
public void test(ActionEvent event){
textarea.appendText("Text");
}
}
There are two tabs on this example, when the button is pressed, I want to add the text on the current selected tab.

There are a few different ways to do this. One way is to let the controller for the tab content expose the textProperty from the text area. Then in your "main controller", create a StringProperty field. When you create a new tab, just observe its selected property and update the string property field to point to the one from the current controller. Then you can easily load text into the "current" pane.
Here's a simple example of this:
EditorController:
import javafx.beans.property.StringProperty;
import javafx.fxml.FXML;
import javafx.scene.control.TextArea;
public class EditorController {
#FXML
private TextArea textArea ;
public StringProperty textProperty() {
return textArea.textProperty() ;
}
}
with textEditor.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.layout.BorderPane?>
<?import javafx.scene.control.TextArea?>
<BorderPane xmlns:fx="http://javafx.com/fxml/1" fx:controller="EditorController">
<center>
<TextArea fx:id="textArea"/>
</center>
</BorderPane>
And then the MainController could look like:
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import javafx.beans.property.StringProperty;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.control.Alert;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.control.Tab;
import javafx.scene.control.TabPane;
import javafx.stage.FileChooser;
public class MainController {
#FXML
private TabPane tabPane ;
private StringProperty currentText ;
public void initialize() throws IOException {
// load an initial tab:
newTab();
}
#FXML
private void newTab() throws IOException {
Tab tab = new Tab("Untitled text");
FXMLLoader loader = new FXMLLoader(getClass().getResource("textEditor.fxml"));
tab.setContent(loader.load());
EditorController controller = loader.getController() ;
tab.selectedProperty().addListener((obs, wasSelected, isNowSelected) -> {
if (isNowSelected) {
currentText = controller.textProperty();
}
});
tabPane.getTabs().add(tab);
tabPane.getSelectionModel().select(tab);
}
#FXML
private void load() {
FileChooser chooser = new FileChooser();
File file = chooser.showOpenDialog(tabPane.getScene().getWindow());
if (file != null) {
Path path = file.toPath();
try {
currentText.set(String.join("\n", Files.readAllLines(path)));
} catch (IOException e) {
Alert alert = new Alert(AlertType.ERROR);
alert.setContentText("Unable to load file "+path);
alert.setTitle("Load error");
alert.showAndWait();
}
tabPane.getSelectionModel().getSelectedItem().setText(path.getFileName().toString());
}
}
}
with main.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.layout.BorderPane?>
<?import javafx.scene.layout.HBox?>
<?import javafx.scene.control.TabPane?>
<?import javafx.scene.control.Button?>
<?import javafx.geometry.Insets?>
<BorderPane xmlns:fx="http://javafx.com/fxml/1" fx:controller="MainController">
<center>
<TabPane fx:id="tabPane"/>
</center>
<bottom>
<HBox alignment="CENTER" spacing="5">
<padding>
<Insets top="5" right="5" left="5" bottom="5" />
</padding>
<Button text="Load..." onAction="#load" />
<Button text="New" onAction="#newTab"/>
</HBox>
</bottom>
</BorderPane>
For completeness, a simple application class:
import java.io.IOException;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class Main extends Application {
#Override
public void start(Stage primaryStage) throws IOException {
Parent root = FXMLLoader.load(getClass().getResource("main.fxml"));
Scene scene = new Scene(root, 800, 800);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
There are other approaches, e.g. you could just change the button's onAction property when the tab selection changes, etc.

Is there a way to select a text field in code without clicking on it (javafx)?

I am not sure how to or even if it is possible to select text fields in code. I could not find anything on the subject. If the is indeed a way to do so i have a template that could be modified to demonstrate how this could be done.
Here is the template/sample code:
Main class:
package application;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class Main extends Application {
public void start(Stage primaryStage) {
try {
Parent root = FXMLLoader.load(getClass().getResource("/fxml/Main.fxml"));
Scene scene = new Scene(root,600,400);
scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
primaryStage.setScene(scene);
primaryStage.setTitle("Test");
primaryStage.show();
} catch(Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
launch(args);
}
}
MainControl class:
package application;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
public class MainControl implements Initializable {
#FXML
Button button;
#FXML
TextField field1;
#FXML
TextField field2;
boolean field1selected=true;
public void initialize(URL arg0, ResourceBundle arg1) {
}
public void switchTextFeild(ActionEvent event){
/*
The code for switch on witch TextField is selected would go here
*/
}
}
Main.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.text.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.MainControl">
<children>
<TextField fx:id="field1" layoutX="6.0" layoutY="2.0" prefHeight="394.0" prefWidth="149.0" />
<TextField fx:id="field2" layoutX="445.0" layoutY="2.0" prefHeight="394.0" prefWidth="149.0" />
<Button fx:id="button" layoutX="177.0" layoutY="14.0" mnemonicParsing="false" onAction="#switchTextFeild" prefHeight="95.0" prefWidth="239.0" text="Switch" textAlignment="CENTER" wrapText="true">
<font>
<Font size="24.0" />
</font>
</Button>
</children>
</AnchorPane>

You can use
field1.requestFocus();
in your initialize() method, so your TextField field1 will be focused after your app is started.
But notice, you have to wrap the requestFocus() call within a
Platform.runLater(new Runnable() {
#Override
public void run() {
field1.requestFocus();
}
});
because this should be done on the JavaFX Application Thread and not on the Launcher Thread, so if you would only call field1.requestFocus() this wont have any effect on our TextField.

This is very simple
filedname.requestFocus();
fieldname.selectAll();
you have to first get the focus then use selectAll()function . if you will not use requestFocus() function then selectAll() will not work

The solution is simple for classic java. You can use code below for select text in a textField without doubleclicking on it (no idea about javafx).
field1.requestFocus();
field1.setSelectionStart(0);
field1.setSelectionEnd(field1.getText().length());

JavaFX showing view make in scene builder with controller

I have this controller:
package cz.vutbr.feec.bmds.cv2;
import java.awt.Button;
import java.awt.TextField;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.control.Slider;
public class TestGuiController {
private int buttonPressed = 0;
#FXML
private Button tlacitko;
#FXML
private TextField textovePole;
#FXML
private Slider slider;
public void buttonPressed(ActionEvent e) {
buttonPressed++;
textovePole.setText(Integer.toString(buttonPressed));
}
}
this fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import java.lang.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.BorderPane?>
<AnchorPane prefHeight="200.0" prefWidth="200.0" xmlns:fx="http://javafx.com/fxml" fx:controller="cz.vutbr.feec.bmds.cv2.TestGuiController">
<children>
<Button fx:id="tlacitko" layoutX="30.0" layoutY="40.0" mnemonicParsing="false" onTouchPressed="#buttonPressed" text="Button" />
<Slider fx:id="slider" layoutX="157.0" layoutY="17.0" orientation="VERTICAL" />
<TextField fx:id="textovePole" layoutX="14.0" layoutY="89.0" prefWidth="134.0" />
</children>
</AnchorPane>
and this is my main class:
package cz.vutbr.feec.bmds.cv2;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class Main extends Application {
#Override
public void start(Stage primaryStage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("TestGui.fxml"));
primaryStage.setTitle("Titulek");
primaryStage.setScene(new Scene(root,300,275));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
When I run this through ant I get message box with error (exception during running application). I tried simple fxml without controller and it works so I am guesing I do something wrong with controller. What I must change to have it working?

I must answer my own question. Problem was in TestGuiController where I used java.awt.Button and java.awt.TextField instead of javafx.scene.control.Button and javafx.scene.control.TextField.

I'm not 100% sure but try:
in FXML: Button: onAction instead of onTouchPressed
Please provide the exact Exception message.