Not only have I lost 5 hours but also almost my mind because of this problem.
I load a String from a Txt File and want to set it to the label sourceURL. Before I check it in System.out.println("Firstline is : " + brTest.readLine()); and it shows the String correctli. But then the UI pops up and the label is empty.
It looks like it couldnt load it and needs to refresh. Do you know anything here?
DashBoardController
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.control.Label;
import javafx.scene.text.Font;
import javafx.stage.DirectoryChooser;
public class DashboardController {
#FXML
private Label userFeedback;
#FXML
private Font x1;
#FXML
private Label sourceURL;
#FXML
private Label targetURL;
#FXML
public void initialize(){
BufferedReader brTest;
try {
brTest = new BufferedReader(new FileReader(new File("settings/sourceurl.txt")));
System.out.println("Firstline is : " + brTest.readLine());
String temp = brTest.readLine();
sourceURL.setText(brTest.readLine());
sourceURL.setText(temp);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
#FXML
void convert(ActionEvent event) {
}
#FXML
void openFolder(ActionEvent event) {
}
#FXML
void selectSource(ActionEvent event) throws FileNotFoundException {
//DirectoryChooser initialisieren
DirectoryChooser directoryChooser = new DirectoryChooser();
directoryChooser.setTitle("Quellordner wählen");
//URL speichern
File selectedDirectory = directoryChooser.showDialog(null);
sourceURL.setText(selectedDirectory.getAbsolutePath());
//Ordner erstellen
File settings = new File("settings");
settings.mkdir();
//Datei erstellen und URL abspeichern
PrintWriter printWriter = new PrintWriter("settings/sourceurl.txt");
printWriter.println(selectedDirectory.getAbsolutePath());
printWriter.close();
}
#FXML
void selectTarget(ActionEvent event) {
sourceURL.setText("sdfkjasdöfl");
}
#FXML
void showInfo(ActionEvent event) {
}
#FXML
void showSupport(ActionEvent event) {
}
}
Dashboard
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;
public class Dashboard extends Application {
public static void main(String[] args) {
// TODO Auto-generated method stub
launch(args);
}
#Override
public void start(Stage stage) throws Exception {
// TODO Auto-generated method stub
//Pane laden
Pane pane = (Pane) FXMLLoader.load(Dashboard.class.getResource("Dashboard.fxml"));
//Stage einrichten
stage.setScene(new Scene(pane));
stage.setTitle("");
stage.setResizable(false);
stage.show();
}
}
If you want to set the text of a TextField during loading, you have to get the ID by using the lookup() function(in JavaFX):
initialize(){
scene = Pane.getScene();
TextField sourceURL= (TextField) scene .lookup("#sourceURL");
sourceURL.setText("your text");
}
Related
I have a login page and I'm trying to get a users email that they entered to display on the next page which is their homepage. This is that code:
FXMLLoader loaderNew = new FXMLLoader(getClass().getResource("/sample/view/Dashboard.fxml"));
try {
loaderNew.load();
} catch (IOException e) {
e.printStackTrace();
}
DashboardController dashboardController = loaderNew.getController();
dashboardController.setName(loginEmail.getText().trim());
And this is the method I'm trying to call:
public void setName(String name){
nameLbl.setText(name);
}
I'm getting no errors, it's just not updated the nameLbl and I have no idea why. The logincontroller will go the dashboard successfully, it just won't update the nameLbl.
Here are both full codes.
Login Controller:
package sample.controller;
import java.io.IOException;
import java.net.URL;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ResourceBundle;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
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.stage.Stage;
import sample.database.DBConnection;
import sample.model.User;
public class LoginController {
#FXML
private ResourceBundle resources;
#FXML
private URL location;
#FXML
private Button loginButton;
#FXML
private TextField loginEmail;
#FXML
private Button createAccountSwitchButton;
#FXML
private Label errorLabel;
#FXML
private PasswordField loginPassword;
private DBConnection dbConnection;
#FXML
void initialize() {
dbConnection = new DBConnection();
loginButton.setOnAction(event-> {
String loginEmailText = loginEmail.getText().trim();
String loginPasswordText = loginPassword.getText().trim();
User user = new User();
user.setEmail(loginEmailText);
user.setPassword(loginPasswordText);
ResultSet userRow = dbConnection.checkForUser(user);
int counter = 0;
try{
while (userRow.next()){
counter++;
}
if (counter==1){
//-------------------Below this line to the next line seems to do nothing-------------------------------------------------------------------
FXMLLoader loaderNew = new FXMLLoader(getClass().getResource("/sample/view/Dashboard.fxml"));
try {
loaderNew.load();
} catch (IOException e) {
e.printStackTrace();
}
DashboardController dashboardController = loaderNew.getController();
dashboardController.setName(loginEmail.getText().trim());
//---------------------------------------------------------------------------------------
loginButton.getScene().getWindow().hide();
FXMLLoader loader = new FXMLLoader();
loader.setLocation(getClass().getResource("/sample/view/Dashboard.fxml"));
try {
loader.load();
} catch (IOException e) {
e.printStackTrace();
}
Parent root = loader.getRoot();
Stage stage = new Stage();
stage.setScene(new Scene(root));
stage.showAndWait();
}else{
errorLabel.setText("Email or Password Incorrect");
}
}catch(SQLException e){
e.printStackTrace();
}
});
}
}
Dashboard controller:
package sample.controller;
//imports here same as above
public class DashboardController {
#FXML
private Label nameLbl;
public void setName(String name){
nameLbl.setText(name);
}
#FXML
void initialize() {
}
}
It seems like my method in Dashboard controller is never being called, why is that? Thanks in advance for any help.
I updated the small segment such that it's only loading one FXML Loader thing and it works now.
loginButton.getScene().getWindow().hide();
FXMLLoader loader = new FXMLLoader(getClass().getResource("/sample/view/Dashboard.fxml"));
try {
loader.load();
} catch (IOException e) {
e.printStackTrace();
}
Parent root = loader.getRoot();
DashboardController dashboardController = loader.getController();
dashboardController.setName(loginEmail.getText().trim());
Stage stage = new Stage();
stage.setScene(new Scene(root));
stage.show();
So I've got a method called 'popup' in a javaFX controller class which opens a small popup window on top of the actual application window. This method runs without problem if it's assigned to a button in fxml and the button is clicked, but this is not the way I want to use it.
I've got an other class called 'Timer' with a new task (new thread) which is counting down from a certain number, and at a point it will open a popup window with a message. My purpose is to call and run the 'popup' method from this 'Timer' class. When I call the 'popup' method from here, it starts executing, but the popup window doesn't appear at all. (The method call happens as I get the message "in popup" on console from 'popup' method. )
So why does it work when a button click calls 'popup' method from the fxml file and why not when I call it from an other class? Thanks.
Please see the controller class with 'popup' method and the Timer class below (using Gradle in project):
"SceneController" controller class:
package GradleFX;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Node;
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.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.text.Text;
import javafx.stage.Modality;
import javafx.stage.Stage;
import java.io.IOException;
import java.net.URL;
import java.util.ResourceBundle;
//import java.awt.event.ActionEvent;
public class SceneController implements Initializable {
public static String password = "";
protected static int timercount = 20;
#FXML
private Label PWLabel;
#FXML
private Label bottomLabel;
#FXML
private PasswordField PWField;
#FXML
private Label showPWLabel;
protected static Label myBottomLabel;
private static PasswordField myPWField;
private static Label myShowPWLabel;
private static int tries;
#Override
public void initialize(URL location, ResourceBundle resources) {
Timer timerTask = new Timer();
myBottomLabel = bottomLabel;
myPWField = PWField;
myShowPWLabel = showPWLabel;
new Thread(timerTask).start();
}
**/***********************************************************************
/*This method runs if button is pressed in main application,
but can't make it work by calling it from Timer Class */
public void popup() {
System.out.println("in popup");
Stage dialogStage = new Stage();
dialogStage.initModality(Modality.WINDOW_MODAL);
VBox vbox = new VBox(new Text("Hi"), new Button("Ok."));
vbox.setAlignment(Pos.CENTER);
vbox.setPadding(new Insets(15));
dialogStage.setScene(new Scene(vbox));
dialogStage.show();
}
//****************************************************************************
public void showPW() {
myShowPWLabel.setText(myPWField.getText());
}
public void hidePW() {
myShowPWLabel.setText("");
}
public void exit() {
System.exit(0);
}
public void write() {
PWLabel.setText("Mukodik");
}
public void writeInput(String in) {
password = in;
System.out.println("final password text text: " + password);
writeFinally();
}
public void writeFinally() {
System.out.println("This is 'password' : " + password);
//bottomLabel.setText(password);
}
public void bottomLabelWrite() {
bottomLabel.setText(myPWField.getText());
}
public static void setLabel() throws InterruptedException {
myBottomLabel.setText("");
myBottomLabel.setText("Database has been permanently erased.");
//Thread.sleep(3000);
//System.exit(0);
}
public static void noKeyEnteredNote() {
myBottomLabel.setTextFill(Color.BLACK);
myBottomLabel.setText("No key entered. Type Main Key.");
}
public static void rightKey() {
myBottomLabel.setText("Yes, this is the right key.");
}
public static void wrongKey() throws InterruptedException {
tries = MasterKey.numOfTryLeft;
if (tries > 0) {
myBottomLabel.setTextFill(Color.RED);
myBottomLabel.setText("!!!Wrong key!!! You've got " + tries + " tries left!");
}
}
public void simpleTest(String in) {
System.out.println("in simpleTest and in is: " + in);
}
public void getMainKey() throws IOException, InterruptedException {
MasterKey masterKey = new MasterKey();
System.out.println("Inside SceneController");
masterKey.requestKey(myPWField.getText());
}
public void changeScreen(ActionEvent event) throws IOException, InterruptedException {
getMainKey();
if (MasterKey.isRightKey) {
Parent tableViewParent = FXMLLoader.load(getClass().getResource("Menu.fxml"));
Scene tableViewScene = new Scene(tableViewParent);
Stage window = (Stage) ((Node) event.getSource()).getScene().getWindow();
window.setScene(tableViewScene);
window.show();
}
}
}
This is Timer class:
package GradleFX;
import javafx.concurrent.Task;
import javafx.event.ActionEvent;
public class Timer extends Task {
private ActionEvent actionEvent;
#Override
protected Integer call() throws Exception {
boolean notCalled = true;
while (SceneController.timercount > 0) {
SceneController sceneController = new SceneController();
System.out.println(SceneController.timercount);
Thread.sleep(1000);
SceneController.timercount--;
if (SceneController.timercount < 19) {
System.out.println("Less than 5");
if(notCalled) {
sceneController.popup();
notCalled = false;
}
}
}
System.exit(0);
return null;
}
}
Add this to your code:
#Override
public void initialize(URL location, ResourceBundle resources) {
Timer timerTask = new Timer();
myBottomLabel = bottomLabel;
myPWField = PWField;
myShowPWLabel = showPWLabel;
new Thread(timerTask).start();
timerTask.setOnFinished(e->{
popup();
});
}
I am working on an App that simulates an online shop for my Data Structures course, I am currently using JavaFX in the Eclipse IDE and Scene Builder for the GUI design, however I am trying to use a Double LinkedList to store the Accounts in the Sign In UI window, but for some reason every time that I try to insert a new Account object (in the Action Event method) into my List it doesn't inserts it, at least if I try to print it´s toString gives me a Null pointer Exception, but if the insert and the println is in the start method works. Last year a did an MP3 player using JavaFX but in Netbeans and I didn't use Scene Builder and the List did work, some one has any idea why is this happening?
package com.javafx.quvbi.controller;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.stage.Stage;
import javafx.scene.input.MouseEvent;
import java.io.IOException;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
public class interfazController extends Application {
#FXML
private Button pausa, CreateAccBttn, LoginBttn;
#FXML
private TextField NameTF, AccountTF, PasswordTF, CardTF;
//Data
ListaDobleEnlazada<Account> accList;
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage primaryStage) throws Exception {
// TODO Auto-generated method stub
//NameTF = new TextField();
//AccountTF = new TextField();
//PasswordTF= new TextField();
//CardTF = new TextField();
accList = new ListaDobleEnlazada<Account>();
//accList.insertarInicio(new Account("Diego","Qubi","22f24rf2",123321));
Parent root = FXMLLoader.load(getClass().getResource("/view/OptionUI.fxml"));
Scene scene = new Scene(root);
primaryStage.setScene(scene);
primaryStage.show();
System.out.println(accList.toString());
}
public ListaDobleEnlazada<Account> getAccounts() {
return accList;
}
#FXML
public void controlMusica(ActionEvent event) {
System.out.println("musica");
System.out.println(getAccounts().getInicio().toString());
}
public void CreateAccClick(MouseEvent event) throws IOException {
if(!NameTF.getText().isEmpty() && !AccountTF.getText().isEmpty() && !PasswordTF.getText().isEmpty() && !CardTF.getText().isEmpty()) {
accList.insertarInicio(new Account(NameTF.getText(), AccountTF.getText(), PasswordTF.getText(), Integer.parseInt(CardTF.getText())));
}
}
#SuppressWarnings("restriction")
public void createAccount(ActionEvent event) throws IOException {
if(!NameTF.getText().isEmpty() && !AccountTF.getText().isEmpty() && !PasswordTF.getText().isEmpty() && !CardTF.getText().isEmpty()) {
Parent loginUI = FXMLLoader.load(getClass().getResource("/view/GUI2.fxml"));
Scene logInScene = new Scene(loginUI);
Stage window = (Stage)((Node)event.getSource()).getScene().getWindow();
window.setScene(logInScene);
window.show();
System.out.println(NameTF.getText());
System.out.println(AccountTF.getText());
System.out.println(PasswordTF.getText());
System.out.println(CardTF.getText());
//this.accList.insertarInicio(new Account(NameTF.getText(), AccountTF.getText(), PasswordTF.getText(), Integer.parseInt(CardTF.getText())));
}
}
public void loginAccount(ActionEvent event) throws IOException {
Parent loginUI = FXMLLoader.load(getClass().getResource("/view/GUI2.fxml"));
Scene logInScene = new Scene(loginUI);
Stage window = (Stage)((Node)event.getSource()).getScene().getWindow();
window.setScene(logInScene);
window.show();
}
}
I'm writing a simple JavaFX application that has three Stages: Login, Register (Anmeldung) and Welcome (Anwendung). Sorry for the German namings!
I have created each Stage and it's Scene in an App class and the handling events in a Controller class and the designs in fxml files. I need to implement a MainApp class which has to manage the communication between Login, Anmeldung and Anwendung windows.
The MainApp should initially launch a Login window and then in there if the checkbox is selected, the MainApp should be notified and order the launch of Anmeldung window. After successful registration, the MainApp should close the Anmeldung window and show the Login window again. There, when user logs in, the MainApp should again close the Login window and order a launch for Anwendung window.
I have done the transition between Login and Anmeldung windows by modifying the LoginController, which shouldn't be done there and has to be accomplished via the MainApp.
Additionally the task wants the whole thing to be done with only one launch(args).
LoginController.java:
package controller;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Node;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.CheckBox;
import javafx.scene.control.PasswordField;
import javafx.scene.control.TextField;
import javafx.stage.Modality;
import javafx.stage.Stage;
import resources.Benutzer;
public class LoginController {
// private static MainApp mainApp;
#FXML
public TextField textFieldUserId;
#FXML
public PasswordField passwordFieldPasswort;
#FXML
public CheckBox checkBoxNeuAnmeldung;
#FXML
public Button buttonEinloggen;
private boolean neuAnmeldung = false;
// public void setCallBack(MainApp mainApp) {
// LoginController.mainApp = mainApp;
// }
#FXML
public void handleButtonEinloggenAction(ActionEvent event) throws Exception {
// Stage stage = (Stage) buttonEinloggen.getScene().getWindow();
if (neuAnmeldung == false) {
Benutzer benutzer = new Benutzer(textFieldUserId.getText(),
passwordFieldPasswort.getText());
Parent anwendungsScene = FXMLLoader
.load(getClass().getResource("/design/Anwendung.fxml"));
Stage anwendungsStage = new Stage();
((Node) (event.getSource())).getScene().getWindow().hide();
anwendungsStage.setScene(new Scene(anwendungsScene));
anwendungsStage.setTitle("Anmeldung");
anwendungsStage.show();
System.out.println(benutzer);
}
// stage.close();
System.out.println("Eingeloggt!");
}
#FXML
public void handleCheckBoxNeuAnmeldungAction(ActionEvent event)
throws Exception {
if (checkBoxNeuAnmeldung.isSelected()) {
neuAnmeldung = true;
Parent anmeldungsScene = FXMLLoader
.load(getClass().getResource("/design/Anmeldung.fxml"));
Stage anmeldungsStage = new Stage();
anmeldungsStage.initModality(Modality.WINDOW_MODAL);
anmeldungsStage
.initOwner(((Node) (event.getSource())).getScene().getWindow());
anmeldungsStage.setScene(new Scene(anmeldungsScene));
anmeldungsStage.setTitle("Anmeldung");
anmeldungsStage.show();
} else
neuAnmeldung = false;
System.out.println("Neu-Anmeldung? " + neuAnmeldung);
}
}
AnmeldungsController.java:
package controller;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.PasswordField;
import javafx.scene.control.TextField;
import javafx.stage.Stage;
import resources.Benutzer;
public class AnmeldungsController {
// private static MainApp mainApp;
#FXML
public TextField textFieldUserId;
#FXML
public PasswordField passwordFieldPasswort;
#FXML
public PasswordField passwordFieldWiederholung;
#FXML
public Button buttonAnmelden;
// public void setCallBack(MainApp mainApp) {
// AnmeldungsController.mainApp = mainApp;
// }
#FXML
public void handleButtonAnmeldenAction(ActionEvent event) {
Stage stage = (Stage) buttonAnmelden.getScene().getWindow();
if (passwordFieldPasswort.getText()
.equals(passwordFieldWiederholung.getText())) {
Benutzer benutzer = new Benutzer(textFieldUserId.getText(),
passwordFieldPasswort.getText());
System.out.println(benutzer);
System.out.println("Angemeldet!");
stage.close();
} else {
textFieldUserId.setText("Passwörter stimmen nicht überein!");
System.out.println("Passwörter stimmen nicht überein!");
System.out.println(passwordFieldPasswort.getText() + " != "
+ passwordFieldWiederholung.getText());
}
}
}
AnwendungsController.java:
package controller;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.stage.Stage;
public class AnwendungsController {
// private static MainApp mainApp;
#FXML
public Button buttonSchliessen;
// public void setCallBack(MainApp mainApp) {
// AnwendungsController.mainApp = mainApp;
// }
#FXML
public void handleButtonAbbrechenAction(ActionEvent event) {
Stage stage = (Stage) buttonSchliessen.getScene().getWindow();
stage.close();
System.out.println("Fenster Geschlossen!");
}
}
MainApp.java:
package application;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class MainApp extends Application {
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage primaryStage) throws Exception {
FXMLLoader loader = new FXMLLoader(
getClass().getResource("/design/Login.fxml"));
Parent root = loader.load();
primaryStage.setTitle("Benutzerverwaltung");
primaryStage.setScene(new Scene(root));
primaryStage.show();
}
}
Of course the other aspects of the program like Exceptions and creating/reading/deleting users etc is out of the scope of this question!
Here is the basic idea that should get you started:
public class LoginController {
private final ReadOnlyBooleanWrapper loggedIn = new ReadOnlyBooleanWrapper();
public ReadOnlyBooleanProperty loggedInProperty() {
return loggedIn.getReadOnlyProperty() ;
}
public final boolean isLoggedIn() {
return loggedInProperty().get();
}
#FXML
public TextField textFieldUserId;
#FXML
public PasswordField passwordFieldPasswort;
#FXML
public CheckBox checkBoxNeuAnmeldung;
#FXML
public Button buttonEinloggen;
private boolean neuAnmeldung = false;
#FXML
public void handleButtonEinloggenAction(ActionEvent event) throws Exception {
// assuming you verify the login credentials...
loggedIn.set(true);
System.out.println("Eingeloggt!");
}
}
and now in your MainApp you can do:
package application;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class MainApp extends Application {
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage primaryStage) throws Exception {
FXMLLoader loader = new FXMLLoader(
getClass().getResource("/design/Login.fxml"));
Parent root = loader.load();
LoginController loginController = loader.getController();
loginController.loggedInProperty().addListener((obs, wasLoggedIn, isNowLoggedIn) -> {
if (isNowLoggedIn) {
// user is now logged in, show welcome screen...
}
});
primaryStage.setTitle("Benutzerverwaltung");
primaryStage.setScene(new Scene(root));
primaryStage.show();
}
}
I have a problem with my basic encrypter application. I want to generate an error window if someone type a string in the keyTextField. And also an event to close the error window using OK Button(Window graphic is loading from fxml file)
I've tried making it as shown below, but without success, i was also using close() method. What are best methods to deal with application control? I am using only MainController and i think it is not good idea. Thank you in advance
`package pl.gumisok.cipherController;
import java.io.IOException;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
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.Button;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.stage.Stage;
import pl.gumisok.cipherMain.CipherManager;
public class MainController implements Initializable {
CipherManager cipher;
#FXML
private ContentPaneController contentPaneController;
#FXML
private ControlPaneController controlPaneController;
#Override
public void initialize(URL arg0, ResourceBundle arg1) {
// TODO Auto-generated method stub
System.out.println(contentPaneController);
System.out.println(controlPaneController);
Button encryptButton = controlPaneController.getEncryptButton();
Button decryptButton = controlPaneController.getDecryptButton();
Button okButton = controlPaneController.getOkButton();
TextArea cleanTextArea = contentPaneController.getCleanTextArea();
TextArea cryptTextArea = contentPaneController.getCryptTextArea();
TextField keyTextField = controlPaneController.getKeyTextField();
encryptButton.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
String wiadomosc = cleanTextArea.getText();
System.out.println(wiadomosc);
try {
int key = Integer.parseInt(keyTextField.getText());
System.out.println(key);
} catch (NumberFormatException e) {
System.out.println(e);
FXMLLoader fxmlLoader = new FXMLLoader(getClass()
.getClassLoader().getResource(
"pl/gumisok/cipherView/Error.fxml"));
Parent root;
try {
root = fxmlLoader.load();
Stage sstage = new Stage();
sstage.setOpacity(1);
sstage.setTitle("Error");
sstage.setScene(new Scene(root));
sstage.show();
okButton.setOnAction(x->sstage.hide());
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
}
});
}
}`
your application layer is not good.
you need bind the button action in fxml file to a controller.
Maybe something like this:
Error.fxml:
<AnchorPane xmlns="http://javafx.com/javafx/8"
xmlns:fx="http://javafx.com/fxml/1"
fx:controller="controllers.ErrorController">
<children>
<Label text="ERROR!" />
<Button text="close" onAction="#hide" layoutY="15"/>
</children>
</AnchorPane>
ErrorController.java:
public class ErrorController {
private static Stage stage;
private static Parent root;
public ErrorController(){}
public ErrorController(Window owner) throws IOException {
if (root == null)
root = FXMLLoader.load(ClassLoader
.getSystemResource("views/Error.fxml"));
if (stage == null)
stage = new Stage();
//stage.initModality(Modality.WINDOW_MODAL);
stage.initOwner(owner);
stage.setTitle("Error");
stage.setScene(new Scene(root));
}
public void show() {
stage.show();
}
public #FXML void hide() {
stage.hide();
}
}
And then use it
...
error = new ErrorController(node.getScene().getWindow());
...
try {
int key = Integer.parseInt(keyTextField.getText());
System.out.println(key);
} catch (NumberFormatException e) {
error.show();
}
I hope, I understand the question correct,
here is an example how to create an alert dialog
Alert alert = new Alert(AlertType.INFORMATION);
alert.setTitle("Information Dialog");
alert.setHeaderText(null);
alert.setContentText("I have a great message for you!");
alert.showAndWait();