How can I move this to FXML?
hBox.getProperties().put("key", "value");
You can do
<HBox>
<properties key="value"/>
</HBox>
as in the documentation.
The variation
<HBox>
<properties>
<key>
<String fx:value="value"/>
</key>
</properties>
</HBox>
might be useful if the value you want is a more complex object:
<HBox>
<properties>
<character>
<String fx:value="Arthur Dent"/>
</character>
<actor>
<Actor firstName="Simon" lastName="Jones"/>
</actor>
<properties>
</HBox>
is equivalent to
Actor actor = new Actor();
actor.setFirstName("Simon");
actor.setLastName("Jones");
HBox hbox = new HBox();
hbox.getProperties().put("character", "Arthur Dent");
hbox.getProperties().put("actor", actor);
Related
I get
javafx.fxml.LoadException:
When I'm loading and fxml file using following line of code.
AnchorPane anchorPane = (AnchorPane)loader.load()
This is my fxml file excluding import statements.
<AnchorPane prefHeight="537.0" prefWidth="374.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.buddhikajay.controller.NewTransactionDialogController">
<children>
<GridPane hgap="5.0" layoutX="30.0" layoutY="10.0" prefHeight="544.0" prefWidth="314.0" vgap="5.0">
<columnConstraints>
<ColumnConstraints hgrow="SOMETIMES" maxWidth="142.0" minWidth="10.0" prefWidth="69.0" />
<ColumnConstraints hgrow="SOMETIMES" maxWidth="226.0" minWidth="10.0" prefWidth="225.0" />
</columnConstraints>
<rowConstraints>
<RowConstraints maxHeight="70.0" minHeight="10.0" prefHeight="33.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="105.0" minHeight="10.0" prefHeight="38.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="156.0" minHeight="10.0" prefHeight="51.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="154.0" minHeight="10.0" prefHeight="43.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="160.0" minHeight="10.0" prefHeight="43.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="161.0" minHeight="10.0" prefHeight="63.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="301.0" minHeight="10.0" prefHeight="180.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="231.0" minHeight="10.0" prefHeight="106.0" vgrow="SOMETIMES" />
</rowConstraints>
<padding>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</padding>
<children>
<Label text="ID" />
<Label text="Date" GridPane.rowIndex="1" />
<Label text="Amont" GridPane.rowIndex="2" />
<Label text="Person" GridPane.rowIndex="4" />
<Label text="Type" GridPane.rowIndex="3" />
<Label text="Resolved" GridPane.rowIndex="5" />
<Label />
<Label text="Description" GridPane.rowIndex="6" />
<TextField fx:id="idTextField" GridPane.columnIndex="1" />
<TextField fx:id="dateTextField" GridPane.columnIndex="1" GridPane.rowIndex="1" />
<TextField fx:id="amountTextField" GridPane.columnIndex="1" GridPane.rowIndex="2" />
<TextArea fx:id="descriptionTextArea" prefHeight="200.0" prefWidth="200.0" GridPane.columnIndex="1" GridPane.rowIndex="6" />
<HBox maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="50.0" prefWidth="225.0" spacing="20.0" GridPane.columnIndex="1" GridPane.rowIndex="7">
<GridPane.margin>
<Insets />
</GridPane.margin>
<padding>
<Insets bottom="10.0" left="20.0" right="10.0" top="10.0" />
</padding>
<children>
<Button fx:id="okButton" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" mnemonicParsing="false" onAction="#okActionFired" prefHeight="25.0" prefWidth="75.0" text="Ok" />
<Button fx:id="cancleButton" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" mnemonicParsing="false" onAction="#cancleActionFired" prefHeight="25.0" prefWidth="75.0" text="Cancle" />
</children>
</HBox>
<ComboBox fx:id="typeComboBox" prefWidth="150.0" GridPane.columnIndex="1" GridPane.rowIndex="3" />
<ComboBox fx:id="personComboBox" prefWidth="150.0" GridPane.columnIndex="1" GridPane.rowIndex="4" />
<ComboBox fx:id="resolvedComboBox" prefWidth="150.0" GridPane.columnIndex="1" GridPane.rowIndex="5" />
</children>
</GridPane>
</children>
</AnchorPane>
The compiler complains that there is an error in line number 1. I'm sure that the path of fxml file is correct. What is wrong with my code?
Here is the full error stack
javafx.fxml.LoadException:
/C:/Users/Buddhika/Documents/Programming/IdeaProjects/VirtualCreditDesktop/out/production/VirtualCreditDesktop/com/buddhikajay/view/NewTransactionDialog.fxml:9
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2595)
at javafx.fxml.FXMLLoader.access$700(FXMLLoader.java:104)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:928)
at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(FXMLLoader.java:967)
at javafx.fxml.FXMLLoader$Element.processStartElement(FXMLLoader.java:216)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:740)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2701)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2521)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2435)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2403)
at com.buddhikajay.controller.NewTransactionDialogController.showNewTransactionDialog(NewTransactionDialogController.java:68)
at com.buddhikajay.controller.MainApp.start(MainApp.java:51)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$153(LauncherImpl.java:821)
at com.sun.javafx.application.LauncherImpl$$Lambda$50/1976027283.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$166(PlatformImpl.java:323)
at com.sun.javafx.application.PlatformImpl$$Lambda$46/301541210.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$164(PlatformImpl.java:292)
at com.sun.javafx.application.PlatformImpl$$Lambda$48/474926796.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$165(PlatformImpl.java:291)
at com.sun.javafx.application.PlatformImpl$$Lambda$47/1662429848.run(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$141(WinApplication.java:102)
at com.sun.glass.ui.win.WinApplication$$Lambda$38/519284171.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.InstantiationException: com.buddhikajay.controller.NewTransactionDialogController
at java.lang.Class.newInstance(Class.java:423)
at sun.reflect.misc.ReflectUtil.newInstance(ReflectUtil.java:51)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:923)
... 23 more
Caused by: java.lang.NoSuchMethodException: com.buddhikajay.controller.NewTransactionDialogController.<init>()
at java.lang.Class.getConstructor0(Class.java:3074)
at java.lang.Class.newInstance(Class.java:408)
... 25 more
The problem is described in the stack trace:
Caused by: java.lang.NoSuchMethodException: com.buddhikajay.controller.NewTransactionDialogController.()
which basically says your controller class doesn't have a zero-argument constructor.
By default, the FXMLLoader will create the controller by calling its zero-argument constructor. Remove the constructor that you have defined in the controller class, or remove the parameters that it takes.
If you really need to pass arguments to the controller's constructor, you can either create the controller in Java code and pass it to the FXMLLoader:
NewTransactionDialogController controller = new NewTransactionDialogController(someValue);
FXMLLoader loader = new FXMLLoader();
loader.setLocation(...);
loader.setController(controller);
AnchorPane anchorPane = loader.load();
(Using this code, you must remove the fx:controller attribute from the FXML.)
Or, set a controller factory:
FXMLLoader loader = new FXMLLoader();
loader.setLocation(...);
loader.setControllerFactory(clazz -> {
if (clazz == NewTransactionDialogController.class) {
return new NewTransactionDialogController(someValue);
} else {
// default behavior:
try {
return clazz.newInstance();
} catch (Exception exc) {
throw new RuntimeException(exc);
}
}
});
AnchorPane anchorPane = loader.load();
(In this version, leave the fx:controller attribute in the FXML file.)
I was about to enter a different question as remarked by #James_D for my comment because Until I Read the first line of the FXML on this question, I had thought that I had a different problem.
For my sins, I reduced the challenge to a simple example of a single controller and two FXML files. One worked and the second fail/failed.
The starting point is the Netbeans sample "[Click me!]" sample. The code is pasted below. And, first a solution.
As preamble, let me say that it seems that everyone has been blaming the Java controller for these load errors. I had a bunch of errors like this on a project a couple of years ago. We exhausted "controller" debugging and eventually pressed-forward by re-building the FXML screens with ScendBuilder. I didn't have time to investigate further then.
Last week I perfectly working FXML screen started failing to load because we moved it to a runtime directory (previously it was in the JAR resources area).
KLUNK!
After 3 or 4 days tweaking that and this, I made a comment here on my error:
unknown path: 7
Javafx fxml LoadException: Error resolving onAction='#handleButtonAction', either the event handler is not in the Namespace or there is an error in the script.
On only the "simple.fxml" file, but not the "Scene.fxml" file. The file "simple.fxml" is reduced from the app FXML file that initially gave the problem. There were too many variables on that original file, so chop-chop-chop to match the canned demo.
When you use ONLY this:
xmlns:fx="http://javafx.com/fxml"
FXML load-s from files on disk under in your application folder work just like you want them to (well, like I want, anyway). Looking at the FXML above it is using a more 'fragile' namespace, viz.
Queston's original FXML:
<AnchorPane ...
xmlns="http://javafx.com/javafx/8"
xmlns:fx="http://javafx.com/fxml/1" ... >
By using diff, I slowly morphed "simple.fxml" to be as close as possible to "Scene.fxml", and "simple" just keeps failing to load. Please note; always using the same controller
Loading FXML with other metadata has not worked consistently an FXML file was moved. I don't have an explanation as to how this is so.
The FXML is kept in a directory called "test/resources/fxml/simple.fxml" for example. When I was building with both files in the project JAR, the 'same' FXML in both cases loaded and worked as expected. To me there's something un-said about aspects of the file load precess. Again for me, this is undesirable because the KEY value of a external scene definition would be interchange.
These kind of bear traps in XML mark-up that are (apparently) not picked up by development tools like SceneBuilder or the FXMLLoader() are barriers to progress on live projects that don't have slack to investigate esoteric weirdness like this.
This is witnessed by our previous project experience -- I was easier to re-edit a complex screen with SceneBuilder as a whole than track down load problems like this one. The call to action is: Diagnostics on FXML load -- an FXML Lint would be almost a requirement.
Controller, SimpleController.java:
package ex.view.views;
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;
public class SimpleController implements Initializable {
#FXML
private Label label;
#FXML
private void handleButtonAction(ActionEvent event) {
System.out.println("You clicked me!");
label.setText("Hello World!");
}
#Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
}
The failing FXML started life as one of the Maven archetypes (I think) and that file worked fine until I moved the FXML files to a folder and loaded them from a InputStream.
I have formatted the AnchorPane markup on multiple lines for readability.
simple.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane id="AnchorPane" prefHeight="200" prefWidth="320"
xmlns="http://javafx.com/javafx/8.0.65"
xmlns:fx="http://javafx.com/fxml/1"
fx:controller="ex.view.views.SimpleController">
<children>
<Button fx:id="button" layoutX="126" layoutY="90" text="Click Me!" />
<Label fx:id="label" layoutX="126" layoutY="120" minHeight="16" minWidth="69" />
</children>
</AnchorPane>
The working FXML mark-up is from the Netbeans 8.1 samples.
Scene.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<AnchorPane id="AnchorPane" prefHeight="200" prefWidth="320"
xmlns:fx="http://javafx.com/fxml"
fx:controller="ex.view.views.SimpleController">
<children>
<Button layoutX="126" layoutY="90" text="Click Me!" onAction="#handleButtonAction" fx:id="button" />
<Label layoutX="126" layoutY="120" minHeight="16" minWidth="69" fx:id="label" />
</children>
</AnchorPane>
Recently, I discovered that <ComboBox>—and other controls—can have an <items> element underneath them .
How can I populate, or add items right to a control in the FXML markup?
(One use case for this might be to make the FXML semi-functional as a mockup to show to stakeholders.)
Research proves that it's done with a combination of the fx:value and fx:factory attributes. These seem to have been added in JavaFX 8 JavaFX 2.
Below, I'll cite the mechanisms and then give some examples.
🦶🔫 Warning:
Note, as #fabian does, that though this works well in the short term for something like a prototype or mockup, adding items directly to the FXML breaks the separation between model and view—and that may likely be an undesired result in the long term.
The Mechanisms
fx:value
The fx:value attribute can be used to initialize an instance of a type that does not have a default constructor but provides a static valueOf(String) method. For example, java.lang.String as well as each of the primitive wrapper types define a valueOf() method and can be constructed in FXML as follows:
<String fx:value="Hello, World!"/>
<Double fx:value="1.0"/>
<Boolean fx:value="false"/>
Custom classes that define a static valueOf(String) method can also be constructed this way.
Source: JavaFX 2 Introduction to FXML
fx:factory
The fx:factory attribute is another means of creating objects whose classes do not have a default constructor. The value of the attribute is the name of a static, no-arg factory method for producing class instances. For example, the following markup creates an instance of an observable array list, populated with three string values:
<FXCollections fx:factory="observableArrayList">
<String fx:value="A"/>
<String fx:value="B"/>
<String fx:value="C"/>
</FXCollections>
Source: JavaFX 2 Introduction to FXML
Some Examples:
ComboBox
<ComboBox value="One">
<items>
<FXCollections fx:factory="observableArrayList">
<String fx:value="Three"/>
<String fx:value="Two"/>
<String fx:value="One"/>
</FXCollections>
</items>
</ComboBox>
CheckComboBox
The ControlsFX Controls are a little different:
<CheckComboBox>
<items>
<String fx:value="One"/>
<String fx:value="Two"/>
<String fx:value="Three"/>
</items>
</CheckComboBox>
TableView
TableView gets a little more complicated because it needs CellValueFactorys to know which part of the Person to show in each column.
<TableView prefHeight="200.0" prefWidth="200.0">
<columns>
<TableColumn text="Name">
<cellValueFactory>
<PropertyValueFactory property="name" />
</cellValueFactory>
</TableColumn>
<TableColumn text="Comment">
<cellValueFactory>
<PropertyValueFactory property="comment" />
</cellValueFactory>
</TableColumn>
</columns>
<items>
<FXCollections fx:factory="observableArrayList">
<Person name="Jacob" comment="Hey!"/>
<Person name="Isabella" comment="Dude, we're in FXML!"/>
<Person name="Ethan" comment="No way!"/>
</FXCollections>
</items>
</TableView>
I'm stuck in my code.
I'm writting a library system, which contains many of controllers.
This is my main controller fxml file:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Menu?>
<?import javafx.scene.control.MenuBar?>
<?import javafx.scene.control.MenuItem?>
<?import javafx.scene.control.Tab?>
<?import javafx.scene.control.TabPane?>
<?import javafx.scene.layout.Pane?>
<?import javafx.scene.layout.VBox?>
<Pane prefWidth="800.0" xmlns="http://javafx.com/javafx/8.0.141" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.library.controllers.MainController">
<children>
<VBox>
<children>
<MenuBar>
<menus>
<Menu mnemonicParsing="false" text="Plik">
<items>
<MenuItem fx:id="Users" mnemonicParsing="false" onAction="#onUsersMenuAction" text="Użytkownicy" />
<MenuItem fx:id="Backup" mnemonicParsing="false" onAction="#onBackupMenuAction" text="Wykonaj kopię zapasową" />
<MenuItem fx:id="CloseProgram" mnemonicParsing="false" onAction="#onCloseProgramMenuAction" text="Zakończ" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Raporty">
<items>
<MenuItem fx:id="ActiveRentedBooks" mnemonicParsing="false" onAction="#onActiveRentedBooksMenuAction" text="Aktywne wypożyczenia" />
<MenuItem fx:id="ActiveBorrowers" mnemonicParsing="false" onAction="#onActiveBorrowersMenuAction" text="Aktualni dłużnicy" />
<MenuItem fx:id="ReportOfRentedBooksPerDay" mnemonicParsing="false" onAction="#onReportOfRentedBooksPerDayMenuAction" text="Raport wypożyczeń/dzień" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Słowniki">
<items>
<MenuItem fx:id="Categories" mnemonicParsing="false" onAction="#onCategoriesMenuAction" text="Kategorie" />
<MenuItem fx:id="UKDDictionary" mnemonicParsing="false" onAction="#onUKDDictionaryMenuAction" text="Słownik UKD" />
<MenuItem fx:id="ReasonsForDefects" mnemonicParsing="false" onAction="#onReasonForDefectsMenuAction" text="Powody ubytków" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Wydruki">
<items>
<MenuItem fx:id="PrintBookLabel" mnemonicParsing="false" onAction="#onPrintBookLabelActionButton" text="Drukuj etykietę książki" />
<MenuItem fx:id="PrintCardOfLoans" mnemonicParsing="false" onAction="#onPrintCardOfLoansMenuAction" text="Drukuj kartę wypożyczająćego" />
</items>
</Menu>
<Menu mnemonicParsing="false" text="Ustawienia">
<items>
<MenuItem fx:id="GeneralOptions" mnemonicParsing="false" onAction="#onGeneralOptionsMenuAction" text="Ogólne" />
</items>
</Menu>
</menus>
</MenuBar>
<TabPane prefHeight="547.0" prefWidth="800.0" tabClosingPolicy="UNAVAILABLE">
<tabs>
<Tab fx:id="KBooks" text="Książki">
<fx:include source="Book.fxml" />
</Tab>
<Tab fx:id="CReaders" text="Czytelnicy">
<fx:include source="Readers.fxml" />
</Tab>
<Tab fx:id="WLoans" text="Wypożyczenia">
<fx:include source="Borrows.fxml" />
</Tab>
<Tab fx:id="ZReturns" text="Zwroty" >
<fx:include source="Return.fxml" />
</Tab>
<Tab fx:id="Communication" text="Komunikaty" >
<fx:include source="Comunication.fxml" />
</Tab>
</tabs>
</TabPane>
</children>
</VBox>
</children>
</Pane>
As you can see every tab has its own controller.
I want to send data from one to another included controller (from Readers.fxml controller to Borrows.fxml controller.
My code:
READER CONTROLLER
#FXML
void onCRentActionButton(ActionEvent event) throws IOException {
if(CTable.getSelectionModel().getSelectedItem()==null)
{
Alert alert = new Alert(Alert.AlertType.ERROR);
alert.setTitle("Błąd !!!");
alert.setHeaderText("Nie możesz edytować użytkownika, jeśli żadnego"
+ "nie zaznaczyłeś w tabeli!!");
alert.showAndWait();
}
else
{
FXMLLoader loader = new FXMLLoader(getClass().getResource("/fxml/Borrows.fxml"));
loader.load();
logger.info("Kontroller pliku Borrows.fxml to: "+ loader.<BorrowController>getController().getClass());
BorrowController controller = loader.<BorrowController>getController();
ReaderBorrow rb;
int id=CTable.getSelectionModel().getSelectedItem().getId();
rb = SQLController.getInstance().getReaderToBorrow(id);
controller.setReader(rb);
}
BORROW CONTROLLER
public void setReader(ReaderBorrow rb)
{
logger.info("Ustawianie nazwiska: " + rb.getSurname());
this.WSurname.setText(rb.getSurname());
logger.info("Odczyt wartości: " + WSurname.getText());
}
I have a good information that data is send succesfully. And WSurname.getText() method returns a good information.
But in my view WSurname TextField is still empty.
I think, when I call getController method in ReadersController i get another instance of BorrowController.
How can I set data into TextField correct ?
You have the wrong instance of BorrowController: in onCRentActionButton() you load Borrows.fxml again, getting a new copy of the UI, and then you get the controller associated with that new copy. Since that new copy of the UI is never displayed, you're updating something you can't see.
Instead, inject the controllers for the different tabs into the main controller. According to the documentation, you can inject the controller by using the fx:id for the <fx:include> with "Controller" appended.
So in MainController, add:
#FXML
private BorrowController borrowController ;
#FXML
private ReaderController readerController ;
add fx:ids to the <fx:include>s:
<Tab fx:id="CReaders" text="Czytelnicy">
<fx:include fx:id="reader" source="Readers.fxml" />
</Tab>
<Tab fx:id="WLoans" text="Wypożyczenia">
<fx:include fx:id="borrow" source="Borrows.fxml" />
</Tab>
To link the controllers you will need a reference to borrowController in ReaderController:
public class ReaderController {
private BorrowController borrowController ;
public void setBorrowController(BorrowController borrowController) {
this.borrowController = borrowController ;
}
// ...
}
which you need to set up in the initialize() method of your main controller:
public class MainController {
#FXML
private BorrowController borrowController ;
#FXML
private ReaderController readerController ;
// ...
public void initialize() {
readerController.setBorrowController(borrowController);
// ...
}
// ...
}
and then finally you can just do
#FXML
void onCRentActionButton(ActionEvent event) throws IOException {
if(CTable.getSelectionModel().getSelectedItem()==null) {
Alert alert = new Alert(Alert.AlertType.ERROR);
alert.setTitle("Błąd !!!");
alert.setHeaderText("Nie możesz edytować użytkownika, jeśli żadnego"
+ "nie zaznaczyłeś w tabeli!!");
alert.showAndWait();
} else {
ReaderBorrow rb;
int id=CTable.getSelectionModel().getSelectedItem().getId();
rb = SQLController.getInstance().getReaderToBorrow(id);
borrowController.setReader(rb);
}
}
If you use a MVC approach and keep the state in a model class, you can avoid all the coupling among these controllers.
I have defined the combo Box in javaFX FXML file now i want to define it's function to get the value of Combo Box and use it in my code.
The FXML file is
<ComboBox fx:id="select_pc" promptText="Select PC">
<HBox.margin>
<Insets left="20.0" top="35.0" />
</HBox.margin>
<items>
<FXCollections fx:factory="observableArrayList">
<String fx:value="ForkLift" />
<String fx:value="Gates" />
</FXCollections>
</items>
</ComboBox>
now can anybody tell me how to write a function to take the value of combo Box and use it in the String form
I get
javafx.fxml.LoadException:
When I'm loading and fxml file using following line of code.
AnchorPane anchorPane = (AnchorPane)loader.load()
This is my fxml file excluding import statements.
<AnchorPane prefHeight="537.0" prefWidth="374.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.buddhikajay.controller.NewTransactionDialogController">
<children>
<GridPane hgap="5.0" layoutX="30.0" layoutY="10.0" prefHeight="544.0" prefWidth="314.0" vgap="5.0">
<columnConstraints>
<ColumnConstraints hgrow="SOMETIMES" maxWidth="142.0" minWidth="10.0" prefWidth="69.0" />
<ColumnConstraints hgrow="SOMETIMES" maxWidth="226.0" minWidth="10.0" prefWidth="225.0" />
</columnConstraints>
<rowConstraints>
<RowConstraints maxHeight="70.0" minHeight="10.0" prefHeight="33.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="105.0" minHeight="10.0" prefHeight="38.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="156.0" minHeight="10.0" prefHeight="51.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="154.0" minHeight="10.0" prefHeight="43.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="160.0" minHeight="10.0" prefHeight="43.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="161.0" minHeight="10.0" prefHeight="63.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="301.0" minHeight="10.0" prefHeight="180.0" vgrow="SOMETIMES" />
<RowConstraints maxHeight="231.0" minHeight="10.0" prefHeight="106.0" vgrow="SOMETIMES" />
</rowConstraints>
<padding>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</padding>
<children>
<Label text="ID" />
<Label text="Date" GridPane.rowIndex="1" />
<Label text="Amont" GridPane.rowIndex="2" />
<Label text="Person" GridPane.rowIndex="4" />
<Label text="Type" GridPane.rowIndex="3" />
<Label text="Resolved" GridPane.rowIndex="5" />
<Label />
<Label text="Description" GridPane.rowIndex="6" />
<TextField fx:id="idTextField" GridPane.columnIndex="1" />
<TextField fx:id="dateTextField" GridPane.columnIndex="1" GridPane.rowIndex="1" />
<TextField fx:id="amountTextField" GridPane.columnIndex="1" GridPane.rowIndex="2" />
<TextArea fx:id="descriptionTextArea" prefHeight="200.0" prefWidth="200.0" GridPane.columnIndex="1" GridPane.rowIndex="6" />
<HBox maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="50.0" prefWidth="225.0" spacing="20.0" GridPane.columnIndex="1" GridPane.rowIndex="7">
<GridPane.margin>
<Insets />
</GridPane.margin>
<padding>
<Insets bottom="10.0" left="20.0" right="10.0" top="10.0" />
</padding>
<children>
<Button fx:id="okButton" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" mnemonicParsing="false" onAction="#okActionFired" prefHeight="25.0" prefWidth="75.0" text="Ok" />
<Button fx:id="cancleButton" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" mnemonicParsing="false" onAction="#cancleActionFired" prefHeight="25.0" prefWidth="75.0" text="Cancle" />
</children>
</HBox>
<ComboBox fx:id="typeComboBox" prefWidth="150.0" GridPane.columnIndex="1" GridPane.rowIndex="3" />
<ComboBox fx:id="personComboBox" prefWidth="150.0" GridPane.columnIndex="1" GridPane.rowIndex="4" />
<ComboBox fx:id="resolvedComboBox" prefWidth="150.0" GridPane.columnIndex="1" GridPane.rowIndex="5" />
</children>
</GridPane>
</children>
</AnchorPane>
The compiler complains that there is an error in line number 1. I'm sure that the path of fxml file is correct. What is wrong with my code?
Here is the full error stack
javafx.fxml.LoadException:
/C:/Users/Buddhika/Documents/Programming/IdeaProjects/VirtualCreditDesktop/out/production/VirtualCreditDesktop/com/buddhikajay/view/NewTransactionDialog.fxml:9
at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2595)
at javafx.fxml.FXMLLoader.access$700(FXMLLoader.java:104)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:928)
at javafx.fxml.FXMLLoader$InstanceDeclarationElement.processAttribute(FXMLLoader.java:967)
at javafx.fxml.FXMLLoader$Element.processStartElement(FXMLLoader.java:216)
at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:740)
at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2701)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2521)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2435)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2403)
at com.buddhikajay.controller.NewTransactionDialogController.showNewTransactionDialog(NewTransactionDialogController.java:68)
at com.buddhikajay.controller.MainApp.start(MainApp.java:51)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$153(LauncherImpl.java:821)
at com.sun.javafx.application.LauncherImpl$$Lambda$50/1976027283.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$166(PlatformImpl.java:323)
at com.sun.javafx.application.PlatformImpl$$Lambda$46/301541210.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$164(PlatformImpl.java:292)
at com.sun.javafx.application.PlatformImpl$$Lambda$48/474926796.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$165(PlatformImpl.java:291)
at com.sun.javafx.application.PlatformImpl$$Lambda$47/1662429848.run(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$141(WinApplication.java:102)
at com.sun.glass.ui.win.WinApplication$$Lambda$38/519284171.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.InstantiationException: com.buddhikajay.controller.NewTransactionDialogController
at java.lang.Class.newInstance(Class.java:423)
at sun.reflect.misc.ReflectUtil.newInstance(ReflectUtil.java:51)
at javafx.fxml.FXMLLoader$ValueElement.processAttribute(FXMLLoader.java:923)
... 23 more
Caused by: java.lang.NoSuchMethodException: com.buddhikajay.controller.NewTransactionDialogController.<init>()
at java.lang.Class.getConstructor0(Class.java:3074)
at java.lang.Class.newInstance(Class.java:408)
... 25 more
The problem is described in the stack trace:
Caused by: java.lang.NoSuchMethodException: com.buddhikajay.controller.NewTransactionDialogController.()
which basically says your controller class doesn't have a zero-argument constructor.
By default, the FXMLLoader will create the controller by calling its zero-argument constructor. Remove the constructor that you have defined in the controller class, or remove the parameters that it takes.
If you really need to pass arguments to the controller's constructor, you can either create the controller in Java code and pass it to the FXMLLoader:
NewTransactionDialogController controller = new NewTransactionDialogController(someValue);
FXMLLoader loader = new FXMLLoader();
loader.setLocation(...);
loader.setController(controller);
AnchorPane anchorPane = loader.load();
(Using this code, you must remove the fx:controller attribute from the FXML.)
Or, set a controller factory:
FXMLLoader loader = new FXMLLoader();
loader.setLocation(...);
loader.setControllerFactory(clazz -> {
if (clazz == NewTransactionDialogController.class) {
return new NewTransactionDialogController(someValue);
} else {
// default behavior:
try {
return clazz.newInstance();
} catch (Exception exc) {
throw new RuntimeException(exc);
}
}
});
AnchorPane anchorPane = loader.load();
(In this version, leave the fx:controller attribute in the FXML file.)
I was about to enter a different question as remarked by #James_D for my comment because Until I Read the first line of the FXML on this question, I had thought that I had a different problem.
For my sins, I reduced the challenge to a simple example of a single controller and two FXML files. One worked and the second fail/failed.
The starting point is the Netbeans sample "[Click me!]" sample. The code is pasted below. And, first a solution.
As preamble, let me say that it seems that everyone has been blaming the Java controller for these load errors. I had a bunch of errors like this on a project a couple of years ago. We exhausted "controller" debugging and eventually pressed-forward by re-building the FXML screens with ScendBuilder. I didn't have time to investigate further then.
Last week I perfectly working FXML screen started failing to load because we moved it to a runtime directory (previously it was in the JAR resources area).
KLUNK!
After 3 or 4 days tweaking that and this, I made a comment here on my error:
unknown path: 7
Javafx fxml LoadException: Error resolving onAction='#handleButtonAction', either the event handler is not in the Namespace or there is an error in the script.
On only the "simple.fxml" file, but not the "Scene.fxml" file. The file "simple.fxml" is reduced from the app FXML file that initially gave the problem. There were too many variables on that original file, so chop-chop-chop to match the canned demo.
When you use ONLY this:
xmlns:fx="http://javafx.com/fxml"
FXML load-s from files on disk under in your application folder work just like you want them to (well, like I want, anyway). Looking at the FXML above it is using a more 'fragile' namespace, viz.
Queston's original FXML:
<AnchorPane ...
xmlns="http://javafx.com/javafx/8"
xmlns:fx="http://javafx.com/fxml/1" ... >
By using diff, I slowly morphed "simple.fxml" to be as close as possible to "Scene.fxml", and "simple" just keeps failing to load. Please note; always using the same controller
Loading FXML with other metadata has not worked consistently an FXML file was moved. I don't have an explanation as to how this is so.
The FXML is kept in a directory called "test/resources/fxml/simple.fxml" for example. When I was building with both files in the project JAR, the 'same' FXML in both cases loaded and worked as expected. To me there's something un-said about aspects of the file load precess. Again for me, this is undesirable because the KEY value of a external scene definition would be interchange.
These kind of bear traps in XML mark-up that are (apparently) not picked up by development tools like SceneBuilder or the FXMLLoader() are barriers to progress on live projects that don't have slack to investigate esoteric weirdness like this.
This is witnessed by our previous project experience -- I was easier to re-edit a complex screen with SceneBuilder as a whole than track down load problems like this one. The call to action is: Diagnostics on FXML load -- an FXML Lint would be almost a requirement.
Controller, SimpleController.java:
package ex.view.views;
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;
public class SimpleController implements Initializable {
#FXML
private Label label;
#FXML
private void handleButtonAction(ActionEvent event) {
System.out.println("You clicked me!");
label.setText("Hello World!");
}
#Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
}
The failing FXML started life as one of the Maven archetypes (I think) and that file worked fine until I moved the FXML files to a folder and loaded them from a InputStream.
I have formatted the AnchorPane markup on multiple lines for readability.
simple.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.AnchorPane?>
<AnchorPane id="AnchorPane" prefHeight="200" prefWidth="320"
xmlns="http://javafx.com/javafx/8.0.65"
xmlns:fx="http://javafx.com/fxml/1"
fx:controller="ex.view.views.SimpleController">
<children>
<Button fx:id="button" layoutX="126" layoutY="90" text="Click Me!" />
<Label fx:id="label" layoutX="126" layoutY="120" minHeight="16" minWidth="69" />
</children>
</AnchorPane>
The working FXML mark-up is from the Netbeans 8.1 samples.
Scene.fxml:
<?xml version="1.0" encoding="UTF-8"?>
<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<AnchorPane id="AnchorPane" prefHeight="200" prefWidth="320"
xmlns:fx="http://javafx.com/fxml"
fx:controller="ex.view.views.SimpleController">
<children>
<Button layoutX="126" layoutY="90" text="Click Me!" onAction="#handleButtonAction" fx:id="button" />
<Label layoutX="126" layoutY="120" minHeight="16" minWidth="69" fx:id="label" />
</children>
</AnchorPane>