I'm trying from yesterday javaFX and scene builder in a very simple application to get button click to work, but everything I tried(by following some tutorials or related answers here) it doesn't work.
I created a new javaFX project and these are the files created with my editings:
Main.java:
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.fxml.FXMLLoader;
public class Main extends Application {
#Override
public void start(Stage primaryStage) {
try {
FXMLLoader loader = new
FXMLLoader(getClass().getResource("sample.fxml"));
loader.setController(new SampleController());
Pane root = loader.load();
Scene scene = new Scene(root,400,400);
scene.getStylesheets().add(getClass().getResource
("application.css").toExternalForm());
primaryStage.setScene(scene);
primaryStage.show();
} catch(Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
launch(args);
}
}
SampleControler.java:
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.Label;
public class SampleController implements Initializable{
#FXML
Button bOk;
#FXML
Label lbTest;
private void handleButtonAction(ActionEvent event) {
// Button was clicked, do something...
lbTest.setText("Button Action\n");
}
#Override
public void initialize(URL location, ResourceBundle resources) {
// TODO Auto-generated method stub
bOk.setOnAction(this::handleButtonAction);
}
}
sample.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.Pane?>
<Pane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity"
minWidth="-Infinity" prefHeight="220.0" prefWidth="484.0"
xmlns="http://javafx.com/javafx/8.0.111"
xmlns:fx="http://javafx.com/fxml/1">
<children>
<Button id="bOk" layoutX="214.0" layoutY="152.0"
mnemonicParsing="false" text="Button" />
<Label id="lbTest" layoutX="214.0" layoutY="57.0" prefHeight="25.0"
prefWidth="138.0" text="Label" />
</children>
</Pane>
The above doesn't give any error, but when button clicked it doesn't do anything(supposed to change Label' s text).
I tried to set onAction on fxml file but this always gives error(cannot resolve onAction), no matter what I put there or if I do it from scene builder or by manually edit the fxml file(I have created the method and wrote it correct in onAction).
What I'm doing wrong?
The error I'm getting now:
javafx.fxml.LoadException:
/home/workspace/testapp/bin/application/sample.fxml
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2579)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2409)
at application.Main.start(Main.java:16)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)
at com.sun.glass.ui.gtk.GtkApplication.lambda$null$49(GtkApplication.java:139)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at application.SampleController.initialize(SampleController.java:27)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2548)
After I used fx:id instead of id for button and label the button worked as expected and the above errors gone.
You forgot to use the controller with the fxml:
<Pane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity"
minWidth="-Infinity" prefHeight="220.0" prefWidth="484.0"
xmlns="http://javafx.com/javafx/8.0.111"
xmlns:fx="http://javafx.com/fxml/1"
fx:controller="application.SampleController">
or
FXMLLoader loader = new FXMLLoader(getClass().getResource("sample.fxml"));
loader.setController(new SampleController());
Pane root = loader.load();
Furthermore you need to use fx:id instead of id attributes to inject objects to the controller:
<Button fx:id="bOk" layoutX="214.0" layoutY="152.0"
mnemonicParsing="false" text="Button" />
<Label fx:id="lbTest" layoutX="214.0" layoutY="57.0" prefHeight="25.0"
prefWidth="138.0" text="Label" />
Related
I'm worked with java for a year and am pretty new to javaFX and have been have been following a basic tutorial so far using scenebuilder. I've tried to apply a translatetransition to my button so far but it doesn't seem to move at all. When I run the program the scene with its background is displayed, but the button just stays in its defined start position in scenebuilder and won't move. After checking other similar questions on this site I've made sure that I implemented Initializable and adding #Override before my initialize function, and I've made sure my transition is played. I've tried the translatetransition on a rectangle too and it won't move. Might just be that I'm using eclipse and not netbeans
Driver Class:
package application;
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
//import javafx.scene.layout.BorderPane;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
public class Main extends Application {
#Override
public void start(Stage primaryStage) {
try {
Parent myroot = FXMLLoader.load(getClass().getClassLoader().getResource("MyFxml.fxml"));
//BorderPane root = new BorderPane();
Scene scene = new Scene(myroot);
//scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
primaryStage.setScene(scene);
primaryStage.show();
} catch(Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
launch(args);
}
}
FXML
<?import javafx.scene.shape.*?>
<?import javafx.scene.text.*?>
<?import javafx.scene.image.*?>
<?import javafx.scene.control.*?>
<?import java.lang.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.AnchorPane?>
<StackPane 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">
<children>
<ImageView fitHeight="413.0" fitWidth="638.0" pickOnBounds="true" preserveRatio="true">
<image>
<Image url="#../../../Downloads/campusmap.png" />
</image>
</ImageView>
<AnchorPane prefHeight="200.0" prefWidth="200.0">
<children>
<Rectangle fx:id="myrectangle" arcHeight="5.0" arcWidth="5.0" fill="#128cff" height="200.0" layoutX="14.0" layoutY="64.0" stroke="BLACK" strokeType="INSIDE" width="200.0" />
<Button fx:id="startbutton" layoutX="202.0" layoutY="232.0" mnemonicParsing="false" prefHeight="64.0" prefWidth="197.0" style="-fx-background-color: #FFC0CB; -fx-background-radius: 100;" text="Start Program">
<font>
<Font name="Comic Sans MS" size="12.0" />
</font></Button>
</children>
</AnchorPane>
</children>
</StackPane>
FXML Controller
package application;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.fxml.Initializable;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.shape.Rectangle;
import javafx.util.Duration;
import javafx.animation.TranslateTransition;
public class MyFxmlController implements Initializable{
#FXML
private Button startbutton;
#FXML
private Rectangle myrectangle;
#Override
public void initialize(URL url, ResourceBundle rb) {
TranslateTransition transition = new TranslateTransition();
transition.setDuration(Duration.seconds(4));
transition.setNode(startbutton);
transition.setToX(-200);
transition.setToY(-200);
transition.play();
}
}
You are not "linking" your controller to the FXML document. So when you display the FXML layout, the Transition code is never executed.
You have a couple of options to do this. In SceneBuilder, you can specify the controller class here:
This will add the fx:controller attribute to your FXML file:
fx:controller="temp.translate.MyFxmlController"
Obviously, you'll need to use your own package paths here.
The other option is to specify the controller in your Java code by updating your loading of the FXML document.
In order to do so, you'll need to get a reference to the FXMLLoader and set the controller there. You can change your start() method like this:
#Override
public void start(Stage primaryStage) {
try {
// Create a new FXMLLoader and set the FXML path
FXMLLoader loader = new FXMLLoader(getClass().getResource("MyFxml.fxml"));
// Set the controller for this FXML document
loader.setController(new MyFxmlController());
// Load the FXML into your Parent node
Parent myRoot = loader.load();
//BorderPane root = new BorderPane();
Scene scene = new Scene(myRoot);
//scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
primaryStage.setScene(scene);
primaryStage.show();
} catch (Exception e) {
e.printStackTrace();
}
Note: If you've specified the controller in your FXML via fx:controller, you cannot also specify it in your Java code, and vice versa. You may only define the controller in one place or the other, so it's really personal preference and depends on your needs.
Using the FXML project template in netbeans, I've been experiencing an issue with defining the FX controller in my FXML file.
The main class, fxml document and fxml controller are all in the same package: "login".
I am importing the controller into the fxml document using it's fully qualified name.
Error occurs at the import line: "Class login.MyController does not exist."
FXML Document
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.ButtonBar?>
<?import javafx.scene.control.PasswordField?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.VBox?>
<?import javafx.scene.shape.Polygon?>
<?import javafx.scene.text.Font?>
<?import javafx.scene.text.Text?>
<?import login.MyController?>
<VBox prefHeight="400.0" prefWidth="640.0" xmlns="http://javafx.com/javafx/10.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="login.MyController">
<children>
<AnchorPane maxHeight="-1.0" maxWidth="-1.0" prefHeight="-1.0" prefWidth="-1.0" style="-fx-background-color: #091D34;" VBox.vgrow="ALWAYS">
<children>
<Polygon fill="#000000b1" layoutX="363.0" layoutY="103.0" points="-50.0, 40.0, 50.0, 40.0, 50.0, -73.0" stroke="BLACK" strokeType="INSIDE" style="-fx-fill: #133863;" />
<ButtonBar layoutX="233.0" layoutY="256.0" prefHeight="40.0" prefWidth="161.0">
<buttons>
<Button layoutX="135.0" layoutY="18.0" minWidth="49.0" mnemonicParsing="false" prefHeight="25.0" text="Login" onAction="#doLogin" />
<Button layoutX="165.0" layoutY="18.0" mnemonicParsing="false" text="About" />
</buttons>
</ButtonBar>
<PasswordField layoutX="186.0" layoutY="216.0" prefHeight="25.0" prefWidth="273.0" promptText="Password" onKeyPressed="#onEnter" />
<TextField layoutX="186.0" layoutY="175.0" prefHeight="25.0" prefWidth="273.0" promptText="Username" />
<Text layoutX="253.0" layoutY="76.0" strokeType="OUTSIDE" strokeWidth="0.0" style="-fx-fill: #236AB9;" text="Anatomy Law" textAlignment="CENTER" wrappingWidth="120.58984375">
<font>
<Font name="Aparajita" size="22.0" />
</font>
</Text>
</children>
</AnchorPane>
Controller
package login;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.Event;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
public class MyController implements Initializable {
#FXML
public void doLogin(Event e){
System.out.println("do login called");
}
#FXML
public void onEnter(KeyEvent ke){
if(ke.getCode() == KeyCode.ENTER){
System.out.println("on enter called");
login();
}
}
private void login(){
}
#Override
public void initialize(URL location, ResourceBundle resources) {
}
}
Main
package login;
import java.net.URL;
import javafx.application.Application;
import javafx.event.Event;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class Main extends Application {
#Override
public void start(Stage stage) throws Exception {
FXMLLoader fxmlLoader = new FXMLLoader();
MyController fxmlController = new MyController();
fxmlLoader.setController(fxmlController);
fxmlLoader.setLocation(new URL("C:/.../login/Login.fxml"));
VBox vbox = fxmlLoader.<VBox>load();
Scene scene = new Scene(vbox);
stage.setScene(scene);
stage.show();
}
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
Note
I recently tried the following line in my FXML document:
<?import login.*?>
Which resulted in "package login does not exist."
And
<?import MyController?>
Which resulted in class does not exist.
So i'm assuming it's some kind of build path error but they're all in the same package. I even added the package that they're in to additional source packages to build from just to make sure but that didn't solve anything. My project layout is the following:
Project Name
Source Packages
login
Login.fxml
MyController.java
Main.java
I reviewed the other question postings for this problem but no one seemed to have this specific problem. If I did however miss someone's post with an identical answer, I will gladly take that reference.
You don't have to import it. You have to specify the full name of your controller class though.
In your case it is login.MyController so fx:controller="login.MyController".
Though you might have some other problems because I'm not having any issues when i put that import statement in the fxml. It just isn't necessary.
Make sure that the document you are editing is definitely the document in your package.
Somehow, in my case I was actually editing a document outside of the package with the same exact name. This is why it couldn't find the controller class when I tried to import it.
I am Trying to come up with simple tool where I want to Call another fxml page on a button click from present fxml page.
My Main Java class is designed as follows:
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.stage.Stage;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.TitledPane;
import javafx.scene.layout.BorderPane;
public class Main extends Application
{
#Override
public void start(Stage stage) {
try {
TitledPane page = (TitledPane)FXMLLoader.load(getClass().getResource("NewTest.fxml"));
Scene scene = new Scene(page);
stage.setScene(scene);
stage.setTitle("Welome Page");
stage.show();
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
Application.launch(Main.class, (java.lang.String[])null);
}}
and Controller Class is designed as :
import javafx.event.ActionEvent;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.EventHandler;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.fxml.Initializable;
import javafx.scene.Parent;
import javafx.scene.control.Button;
import javafx.scene.control.TitledPane;
import javafx.stage.Stage;
public class SimpleController implements Initializable
{
#FXML // fx:id="loginbtn"
private Button loginbtn; // Value injected by FXMLLoader
#Override // This method is called by the FXMLLoader when
initialization is complete
public void initialize(URL fxmlFileLocation, ResourceBundle resources) {
assert loginbtn != null : "fx:id=\"myButton\" was not injected: check your FXML file 'simple.fxml'.";
// initialize your logic here: all #FXML variables will have been injected
loginbtn.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
Stage stage;
Parent root;
if(event.getSource()==loginbtn){
//get reference to the button's stage
stage=(Stage) loginbtn.getScene().getWindow();
//load up OTHER FXML document
try{
TitledPane page =(TitledPane) FXMLLoader.load(getClass().getResource("secondPage.fxml"));
}catch(Exception e)
{e.printStackTrace();}
}
}
});
}
}
And the Fxml Page is like:
<?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.TextArea?>
<?import javafx.scene.control.TitledPane?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.text.Font?>
<TitledPane text="Welcome to the Vacation Planner" xmlns="http://javafx.com/javafx/8.0.65" xmlns:fx="http://javafx.com/fxml/1">
<content>
<AnchorPane prefHeight="330.0" prefWidth="497.0">
<children>
<Label layoutX="14.0" layoutY="52.0" prefHeight="25.0" prefWidth="189.0" text="User Name">
<font>
<Font size="24.0" />
</font>
</Label>
<TextArea layoutX="53.0" layoutY="106.0" prefHeight="41.0" prefWidth="391.0" />
<Label layoutX="14.0" layoutY="165.0" text="Password">
<font>
<Font size="24.0" />
</font>
</Label>
<Button fx:id="loginbtn" layoutX="114.0" layoutY="262.0" mnemonicParsing="false" text="Login">
<font>
<Font size="18.0" />
</font>
</Button>
<Button fx:id="exitbtn" layoutX="271.0" layoutY="262.0" mnemonicParsing="false" text="Exit">
<font>
<Font size="18.0" />
</font>
</Button>
<PasswordField layoutX="53.0" layoutY="207.0" prefHeight="39.0" prefWidth="391.0" />
</children>
</AnchorPane>
</content>
</TitledPane>
When I am clicking on the button Login it is not opening the Second xml page that I am trying to open on button click.
Thanks in advance.
You load the Nodes and then do nothing with it.
You need to add them to the existing scene or replace that scene:
try{
TitledPane page =(TitledPane) FXMLLoader.load(getClass().getResource("secondPage.fxml"));
Scene newScene = new Scene(page);
stage.setScene(newScene);
} catch(Exception e) {
e.printStackTrace();
}
Furthermore you haven't associated the controller with the fxml. Use e.g. the fx:controller attribute with the fully qualified class name of the controller class at the root of the fxml to do this:
<TitledPane text="Welcome to the Vacation Planner" xmlns="http://javafx.com/javafx/8.0.65" xmlns:fx="http://javafx.com/fxml/1" fx:controller="my.package.SimpleController">
Where my.package would be the package containing the controller.
im devlop javaFx login app from tutorial on youtube for school homework. but after click login button. the login function can't show window main scene (AdminLayout.fxml). just login window hide. Thank you
this is my Error
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:71)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:275)
at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1769)
... 45 more
Caused by: java.lang.NullPointerException
at mpn.manda.controller.LoginLayoutController.Login(LoginLayoutController.java:58)
... 55 more
line 58 at LoginLayoutController.java
Pane p = fxmlLoader.load(getClass().getResource("view/AdminLayout.fxml").openStream());
File LoginLayoutController.java
package mpn.manda.controller;
import java.io.IOException;
import java.net.URL;
import java.sql.SQLException;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.Initializable;
import mpn.manda.model.LoginModel;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.PasswordField;
import javafx.scene.control.TextField;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;
/**
* FXML Controller class
*
* #author Xaxxis
*/
public class LoginLayoutController implements Initializable {
public LoginModel loginModel = new LoginModel();
#FXML
private Label isConnected;
#FXML
private TextField usernameField;
#FXML
private PasswordField passwordField;
#Override
public void initialize(URL location, ResourceBundle resource) {
if (loginModel.isDbConnected()) {
isConnected.setText("Connected");
} else {
isConnected.setText("Not Connected");
}
}
public void Login (ActionEvent event) {
try {
if (loginModel.isLogin(usernameField.getText(), passwordField.getText())) {
((Node)event.getSource()).getScene().getWindow().hide();
Stage primaryStage = new Stage();
FXMLLoader fxmlLoader = new FXMLLoader();
Pane p = fxmlLoader.load(getClass().getResource("view/AdminLayout.fxml").openStream());
AdminLayoutController adminController = (AdminLayoutController)fxmlLoader.getController();
adminController.GetUser(usernameField.getText());
Scene scene = new Scene(p);
scene.getStylesheets().add(getClass().getResource("css/application.css").toExternalForm());
primaryStage.setScene(scene);
primaryStage.show();
} else {
isConnected.setText("Username and password is not correct");
}
} catch (SQLException e) {
isConnected.setText("Username and password is not correct");
}
catch(IOException e) {
e.printStackTrace();
}
}
}
MainApp.java
package mpn.manda;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
/**
*
* #author Xaxxis
*/
public class MainApp extends Application {
#Override
public void start(Stage primaryStage) {
try {
Parent root = FXMLLoader.load(getClass().getResource("view/LoginLayout.fxml"));
Scene scene = new Scene(root);
scene.getStylesheets().add(getClass().getResource("css/application.css").toExternalForm());
primaryStage.setScene(scene);
primaryStage.show();
} catch(Exception e) {
e.printStackTrace();
}
}
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
</pre>
AdminLayoutController.java
<pre>
package mpn.manda.controller;
import java.net.URL;
import java.util.ResourceBundle;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Label;
/**
* FXML Controller class
*
* #author Xaxxis
*/
public class AdminLayoutController implements Initializable {
#FXML
private Label userLabel;
#Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
public void GetUser(String user) {
// TODO
userLabel.setText(user);
}
public void Logout(ActionEvent event) {
}
}
LoginLayout.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import java.net.URL?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.PasswordField?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.paint.RadialGradient?>
<?import javafx.scene.paint.Stop?>
<?import javafx.scene.text.Font?>
<AnchorPane id="AnchorPane" prefHeight="400.0" prefWidth="600.0" styleClass="mainFxmlClass" xmlns="http://javafx.com/javafx/8.0.65" xmlns:fx="http://javafx.com/fxml/1" fx:controller="mpn.manda.controller.LoginLayoutController">
<stylesheets>
<URL value="#/mpn/manda/css/application.css" />
</stylesheets>
<children>
<Label fx:id="isConnected" layoutX="18.0" layoutY="94.0" prefHeight="28.0" prefWidth="485.0" text="Status" textFill="#f20202">
<font>
<Font size="15.0" />
</font>
</Label>
<Label layoutX="94.0" layoutY="135.0" text="Username" />
<Label layoutX="94.0" layoutY="183.0" text="Password" />
<TextField fx:id="usernameField" layoutX="203.0" layoutY="130.0" promptText="Your username" />
<PasswordField fx:id="passwordField" layoutX="203.0" layoutY="178.0" promptText="Your password" />
<Button layoutX="203.0" layoutY="236.0" mnemonicParsing="false" onAction="#Login" prefHeight="27.0" prefWidth="78.0" text="Login..." />
<Button layoutX="288.0" layoutY="236.0" mnemonicParsing="false" prefHeight="27.0" prefWidth="78.0" text="Cancel" />
<Label layoutX="47.0" layoutY="24.0" prefHeight="59.0" prefWidth="381.0" text="Welcom To The App">
<font>
<Font size="31.0" />
</font>
<textFill>
<RadialGradient centerX="0.5" centerY="0.5" radius="0.5">
<stops>
<Stop color="#3c361c" />
<Stop color="#9a8d8d" offset="0.9330855018587361" />
<Stop color="#9a8d8d" offset="1.0" />
</stops>
</RadialGradient>
</textFill>
</Label>
</children>
</AnchorPane>
AdminLayout.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.BorderPane?>
<BorderPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8.0.65" xmlns:fx="http://javafx.com/fxml/1" fx:controller="mpn.manda.controller.AdminLayoutController">
<top>
<Label fx:id="userLabel" prefHeight="17.0" prefWidth="154.0" text="Halo, " BorderPane.alignment="CENTER" />
</top>
<bottom>
<Button mnemonicParsing="false" text="Logout.." BorderPane.alignment="CENTER" />
</bottom>
</BorderPane>
The path is wrong.
getClass().getResource("view/AdminLayout.fxml")
will resolve the path relative to the current class (so it is looking for /mpn/manda/controller/view/AdminLayout.fxml). Assuming (since the resource works correctly in MainApp) the view package is mpn.manda.view (i.e. AdminLayout.fxml and LoginLayout.fxml are in the same package), you can either do
getClass().getResource("/mpn/manda/view/AdminLayout.fxml")
(note the leading /, which resolves relative to the classpath), or
MainApp.class.getResource("view/AdminLayout.fxml")
which will resolve the path relative to the MainApp class.
Do not be tempted to use .. to reference a "parent package": this might work when you are reading resources and classes from the file system (e.g. during development), but will fail if your application is bundled in a jar file (which it will be at production time).
As an aside, you should prefer loading the FXML by specifying the URL of the FXML resource, instead of the stream. This is because any resource resolutions in the FXML file itself will fail if you do not specify a URL to the FXMLLoader. So I recommend
FXMLLoader fxmlLoader = new FXMLLoader(MainApp.class.getResource("view/AdminLayout.fxml"));
Pane p = fxmlLoader.load();
// ...
If you like the structure where you have one package (view) for the FXML files and one (controller) for the controllers (I don't, FWIW), another technique you might like is to define an empty class for the purpose of resolving view resources:
package mpn.manda.view ;
public abstract class View { }
And now you can load any FXML from anywhere with
FXMLLoader loader = new FXMLLoader(View.class.getResource("LoginLayout.fxml"));
Parent root = loader.load();
and
FXMLLoader loader = new FXMLLoader(View.class.getResource("AdminLayout.fxml"));
Parent p = loader.load();
etc. etc.
I am trying to launch the IntLogin window from the main class (MAAWB); however, I can not seem to get it to launch. My splash screen launches without issues. I ran a debug with no issues until it hits the launch sequence then it kicks back an unrecognizable error. I have included below the main, fxml and controller file. What am I missing or doing wrong here that's causing me all these headaches? Also if anyone has the answer how do I put my splash screen on a timer?
main
package javafxswingapplication3;
import javafx.application.Application;
import javafx.application.Preloader;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
public class MAAWB extends Application {
#Override
public void start(Stage primaryStage) {
Parent root;
try {
root = FXMLLoader.load(getClass().getResource("Intlogin.fxml"));
Stage stage = new Stage();
stage.setTitle("initial login");
stage.setScene(new Scene(root, 222, 484));
stage.show();
} catch(Exception e){
e.printStackTrace();
}
}
public static void main(String[] args) {
Preloader.launch(MAAWBPreloader.class, args);
Application.launch(MAAWB.class, args);
}
}
fxml
<?import javafx.scene.text.*?>
<?import javafx.geometry.*?>
<?import javafx.scene.paint.*?>
<?import javafx.scene.effect.*?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<AnchorPane id="AnchorPane" prefHeight="222.0" prefWidth="484.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="javafxswingapplication3.IntloginController">
<children>
<TextField layoutX="173.0" layoutY="50.0" />
<TextField fx:id="username" editable="false" layoutX="173.0" layoutY="90.0" />
<ChoiceBox layoutX="173.0" layoutY="130.0" prefHeight="31.0" prefWidth="187.0" />
<Label layoutX="91.0" layoutY="55.0" text="Installation" />
<Label layoutX="94.0" layoutY="95.0" text="Username" />
<Label layoutX="58.0" layoutY="135.0" text="Functional Area" />
<Button cancelButton="true" layoutX="400.0" layoutY="182.0" mnemonicParsing="false" text="Cancel" />
<Button layoutX="327.0" layoutY="182.0" mnemonicParsing="false" text="Submit" />
</children>
</AnchorPane>
controller
package javafxswingapplication3;
import java.net.URL;
import java.util.ResourceBundle;
import java.util.Properties;
import static javafx.application.ConditionalFeature.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.TextField;
public class IntloginController implements Initializable {
private TextField username;
#Override
public void initialize(URL url, ResourceBundle rb) {
final String UN = System.getProperty("user.name");
username.setText(UN);
}
}
error
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2601)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2579)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2441)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3214)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3175)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3148)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3124)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3104)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3097)
at javafxswingapplication3.MAAWB.start(MAAWB.java:31)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$162(LauncherImpl.java:863)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$175(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl.lambda$null$173(PlatformImpl.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$174(PlatformImpl.java:294)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at javafxswingapplication3.IntloginController.initialize(IntloginController.java:28)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2548)
Annotate the username definition #FXML.
#FXML
private TextField username;
This will associate the TextField defined in your controller with the textfield defined in your FXML via fx:id="username".