my code like:
public static int mShortcut=50;
#FXML private void OnSignIn(ActionEvent event )
{
setShortcut(101);
CheckShortCut();
}
public void setShortcut(int shortcut)
{
mShortcut=shortcut;
mMenuItemProdType.getAccelerator();
CheckShortCut();
}
public void CheckShortCut()
{
switch(mShortcut)
{
case 101:
System.out.println("Enter in 3 Case");
mMenuItemProdType.setAccelerator(new KeyCodeCombination(KeyCode.T, KeyCombination.CONTROL_DOWN, KeyCodeCombination.SHORTCUT_DOWN));
break;
case 50:
System.out.println("Enter in 50 Case");
mMenuItemProdType.setAccelerator(null);
break;
default:
mMenuItemProdType.setAccelerator(null);
break;
}
}
My requirement user can't access short cut key if he is not logged in ,so in OnSignIn i put two methods setShortcut(101); and CheckShortCut(); but in above code after logged in i can not get Short cut event so any idea how can i solve it ?
I solved this problem by disabling the menu items.
#FXML private MenuItem signMenuItem;
#FXML private MenuItem openMenuItem;
#FXML private MenuItem saveMenuItem;
#FXML
private void OnSignIn(ActionEvent event) {
if (sign("admin", "1234")) {
openMenuItem.setDisable(false);
saveMenuItem.setDisable(false);
}
}
private boolean sign(String name, String pass) {
// do sign in
return true;
}
#Override
public void initialize(URL fxmlFileLocation, ResourceBundle resources) {
this.signMenuItem.setAccelerator(new KeyCodeCombination(KeyCode.ENTER, KeyCombination.CONTROL_DOWN, KeyCombination.SHORTCUT_DOWN));
this.openMenuItem.setAccelerator(new KeyCodeCombination(KeyCode.O, KeyCombination.CONTROL_DOWN, KeyCombination.SHORTCUT_DOWN));
this.saveMenuItem.setAccelerator(new KeyCodeCombination(KeyCode.S, KeyCombination.CONTROL_DOWN, KeyCombination.SHORTCUT_DOWN));
openMenuItem.setDisable(true);
saveMenuItem.setDisable(true);
}
Related
What I'm trying to do is have a single class that maintains a static ObservableList of countries. I want to display these countries in a ComboBox. I've got this part working fine. Now, I also want to enable the user to add new countries to the list. So, there is a button beside the combo box that will show another dialog allowing entry of another country name. After the user enters the country name and clicks save, I would like the single static ObservableList to be updated with the new country and then it show up in the ComboBox. This part is not happening.
I'll show what DOES work, and what does not.
Saving a reference to the static list and updating that works. Like so:
public class CustomerController implements Initializable {
private ObservableList<Country> countryList;
#Override
public void initialize(URL url, ResourceBundle rb) {
countryList = Country.getCountryList();
comboCountry.setItems(countryList);
}
...
// Fired when clicking the "new country" button
#FXML
void handleNewCountry(ActionEvent event) {
Country country = new Country();
country.setCountry("Austria");
countryList.add(country);
}
}
This is what I would like to do, however it does not work:
public class CustomerController implements Initializable {
#FXML
private ComboBox<Country> comboCountry;
#Override
public void initialize(URL url, ResourceBundle rb) {
comboCountry.setItems(Country.getCountryList());
}
#FXML
void handleNewCountry(ActionEvent event) {
showScene("Country.fxml", "dialog.newCountry");
}
private void showScene(String sceneResource, String titleResource) {
try {
FXMLLoader loader = new FXMLLoader(
getClass().getResource(sceneResource),
resourceBundle
);
Scene scene = new Scene(loader.load());
getNewStage(resourceBundle.getString(titleResource), scene).showAndWait();
} catch (IOException e) {
e.printStackTrace();
}
}
private Stage getNewStage(String title, Scene scene) {
Stage stage = new Stage();
stage.setTitle(title);
stage.setResizable(false);
stage.setScene(scene);
stage.initOwner(rootPane.getScene().getWindow());
stage.initModality(Modality.APPLICATION_MODAL);
return stage;
}
}
The Country class:
public class Country extends BaseModel {
private int countryID;
private StringProperty country;
private static ObservableList<Country> countryList; // The static observable list
public Country() {
countryList = FXCollections.observableArrayList();
country = new SimpleStringProperty();
}
public int getCountryID() {
return countryID;
}
public void setCountryID(int countryID) {
this.countryID = countryID;
}
public StringProperty countryProperty() {
return this.country;
}
public String getCountry() {
return this.country.get();
}
public void setCountry(String country) {
this.country.set(country);
}
public boolean equals(Country country) {
if (this.getCountry().compareToIgnoreCase(country.getCountry()) != 0) {
return false;
}
return true;
}
public static ObservableList<Country> getCountryList() {
if (countryList.size() < 1) {
updateCountryList();
}
return countryList;
}
public static void updateCountryList() {
countryList.clear();
ArrayList<Country> daoList = CountryDao.listCountries();
for (Country country : daoList) {
countryList.add(country);
}
}
#Override
public String toString() {
return this.getCountry();
}
}
And the dialog for entering a new country:
public class CountryController implements Initializable {
#FXML
private TextField textCountry;
#Override
public void initialize(URL url, ResourceBundle rb) {
}
#FXML
void handleSave(ActionEvent event) {
Country country = new Country();
country.setCountry(textCountry.getText().trim());
CountryDao.insert(country); // Insert the country into the database
Country.updateCountryList(); // Update the static ObservableList
close();
}
#FXML
void handleCancel() {
close();
}
void close() {
final Stage stage = (Stage) textCountry.getScene().getWindow();
stage.close();
}
}
So, my theory is that somehow the ComboBox is creating a new instance of the ObservableList when setItems is called. I'm really not sure though. A static object should only have one instance, so updating it from anywhere should update that ComboBox. Anyone know what's up with this?
You're creating a new ObservableList instance every time the Country constructor is invoked. This way a list different to the one used with the ComboBox is modified.
If you really need to keep the list of countries in a static field (this is considered bad practice), you should make sure to only create a single ObservableList:
private static final ObservableList<Country> countryList = FXCollections.observableArrayList();
(Remove the assignment of this field from the constructor too.)
I have 1 "ViewElements"-Class, 1 Controller and 1 FXML-file.
The ViewElements-Class contains the elements of the FXML like Buttons and textfields.
The Controller-Class contains the Business logic.
I try to update the TextField "textfieldDateiAuswaehlen", I want to set the path of the File into the TextField but my method does not work.
ViewElements:
public class ViewElements {
#FXML private TextField textfieldDateiAuswaehlen;
#FXML private TextArea textareaXmlContent;
#FXML private Button buttonXmlBearbeiten;
#FXML private Button buttonXmlLaden;
#FXML private Button buttonXmlOeffnen;
public ViewElements() {
this.textfieldDateiAuswaehlen= new TextField();
this.textareaXmlContent = new TextArea();
this.buttonXmlBearbeiten = new Button();
this.buttonXmlLaden = new Button();
this.buttonXmlOeffnen = new Button();
}
public TextField getTextfieldDateiAuswaehlen() {
return textfieldDateiAuswaehlen;
}
public void setTextfieldDateiAuswaehlenText(String text) {
this.textfieldDateiAuswaehlen.setText(text);
}
public String getTextfieldDateiAuswaehlenContent() {
return this.textfieldDateiAuswaehlen.getText();
}
public TextArea getTextareaXmlContent() {
return textareaXmlContent;
}
public void setTextareaXmlText(String text) {
this.textareaXmlContent.setText(text);
}
public Button getButtonXmlBearbeiten() {
return buttonXmlBearbeiten;
}
public Button getButtonXmlLaden() {
return buttonXmlLaden;
}
public Button getButtonXmlOeffnen() {
return buttonXmlOeffnen;
}}
Controller:
public class SampleController implements Initializable{
ViewElements viewElems= new ViewElements();
#FXML
private void handleButtonLaden(ActionEvent event){
System.out.println("Klicked");
}
#FXML
private void handleButtonXmlOeffnen(ActionEvent event){
FileChooser filechooser = new FileChooser();
File file = filechooser.showOpenDialog(null);
//Falls eine Datei ausgewaehlt ist
if(file != null){
//Falls TextField leer ist
if(viewElems.getTextfieldDateiAuswaehlenContent().isEmpty()) {
System.out.println(file.getAbsolutePath().toString());
viewElems.getTextfieldDateiAuswaehlen().clear();
String verzeichnis = file.getAbsolutePath().toString();
viewElems.setTextfieldDateiAuswaehlenText(verzeichnis);
Service<Void> service = new Service<Void>() {
#Override
protected Task<Void> createTask() {
return new Task<Void>() {
#Override
protected Void call() throws Exception {
Platform.runLater(() -> viewElems.setTextfieldDateiAuswaehlenText(verzeichnis));
return null;
}
};
}
};
service.start();
System.out.println("PRINT: " + viewElems.getTextfieldDateiAuswaehlenContent());
}
}
}
#Override
public void initialize(URL location, ResourceBundle resources) {
}}
In the screenshot you see that the path is passed to TextField but the TextField in the UI does not update.
Where is my mistake?
When you load the FXML file the FXMLLoader creates the UI nodes corresponding to the elements in the FXML.
If you declare a controller, give the elements fx:id attributes, and declare #FXML-annotated fields in the controller, the FXMLLoader will set those fields in the controller to the UI nodes created from the FXML.
In your code, your controller contains no #FXML-annotated fields. You create an instance of your ViewElements class, which creates some new instances of TextField and Button:
public ViewElements() {
this.textfieldDateiAuswaehlen= new TextField();
this.textareaXmlContent = new TextArea();
this.buttonXmlBearbeiten = new Button();
this.buttonXmlLaden = new Button();
this.buttonXmlOeffnen = new Button();
}
Obviously these are not the same text fields and buttons created by the FXMLLoader.
Presumably, somewhere, you load the FXML and display the UI created by the FXMLLoader; but you don't display the UI nodes created in your ViewElements instance. So when you modify the nodes in your ViewElements instance, you are not modifying the UI you have displayed, and consequently you don't see anything.
You need to place the UI elements directly in the controller (which is perhaps better thought of as a presenter). The only way the FXMLLoader can assign the objects it creates to fields is if those fields are in the controller, because that is the only other object the controller "knows about".
If you want to separate the logic into a different class from the class that contains the UI elements, then make the "controller" the class that has the UI elements, and create a different class containing the implementation of the logic. Then in the "controller" class, just delegate the user event handling to your new class.
I.e. change the fx:controller attribute to point to ViewElements, and refactor as
public class ViewElements {
#FXML private TextField textfieldDateiAuswaehlen;
#FXML private TextArea textareaXmlContent;
#FXML private Button buttonXmlBearbeiten;
#FXML private Button buttonXmlLaden;
#FXML private Button buttonXmlOeffnen;
private SampleController controller ;
public void initialize() {
controller = new SampleController(this);
}
#FXML
private void handleButtonXmlOeffnen(ActionEvent event){
controller.handleButtonXmlOeffnen();
}
public TextField getTextfieldDateiAuswaehlen() {
return textfieldDateiAuswaehlen;
}
public void setTextfieldDateiAuswaehlenText(String text) {
this.textfieldDateiAuswaehlen.setText(text);
}
public String getTextfieldDateiAuswaehlenContent() {
return this.textfieldDateiAuswaehlen.getText();
}
public TextArea getTextareaXmlContent() {
return textareaXmlContent;
}
public void setTextareaXmlText(String text) {
this.textareaXmlContent.setText(text);
}
public Button getButtonXmlBearbeiten() {
return buttonXmlBearbeiten;
}
public Button getButtonXmlLaden() {
return buttonXmlLaden;
}
public Button getButtonXmlOeffnen() {
return buttonXmlOeffnen;
}
}
public class SampleController {
private final ViewElements viewElems ;
public SampleController(ViewElements viewElems) {
this.viewElems = viewElems ;
}
public void handleButtonXmlOeffnen() {
FileChooser filechooser = new FileChooser();
File file = filechooser.showOpenDialog(null);
//Falls eine Datei ausgewaehlt ist
if(file != null){
//Falls TextField leer ist
if(viewElems.getTextfieldDateiAuswaehlenContent().isEmpty()) {
System.out.println(file.getAbsolutePath().toString());
viewElems.getTextfieldDateiAuswaehlen().clear();
String verzeichnis = file.getAbsolutePath().toString();
viewElems.setTextfieldDateiAuswaehlenText(verzeichnis);
Service<Void> service = new Service<Void>() {
#Override
protected Task<Void> createTask() {
return new Task<Void>() {
#Override
protected Void call() throws Exception {
Platform.runLater(() -> viewElems.setTextfieldDateiAuswaehlenText(verzeichnis));
return null;
}
};
}
};
service.start();
System.out.println("PRINT: " + viewElems.getTextfieldDateiAuswaehlenContent());
}
}
}
}
I have a JavaFX ListView. When I click on an item in the list, I would like like two...edit controls, a ComboBox and a TextField, to be populated by the appropriate values from the model.
First, my model:
public class Recipient {
private final SimpleStringProperty type = new SimpleStringProperty();
private final SimpleStringProperty address = new SimpleStringProperty();
// property getters
}
In my controller, I have:
public class Controller implements Initializable {
#FXML
private ComboBox type;
#FXML
private TextField address;
#FXML
private ListView<Recipient> recipList;
private final ObservableList<String> types = FXCollections.observableArrayList("SMS", "Email");
private final ObservableList<Recipient> recips = FXCollections.observableArrayList(Recipient.DUMMYDATA);
private final ObjectProperty<Recipient> recipient = new SimpleObjectProperty<>();
#Override
public void initialize(URL url, ResourceBundle rb) {
type.setItems(types);
recipList.setItems(recips);
recipList.setCellFactory((ListView<Recipient> p) -> new ListCell<Recipient>() {
#Override
public void updateItem(Recipient recip, boolean empty) {
super.updateItem(recip, empty);
final int index = p.getItems().indexOf(recip);
if (index > -1) {
setText(String.format("%s - %s", recip.typeProperty().get(), recip.addressProperty().get()));
} else {
setText(null);
}
}
});
recipient.setValue(new Recipient());
recipList.setOnMouseClicked(event -> recipClicked(event));
type.valueProperty().bindBidirectional(recipient.get().typeProperty());
address.textProperty().bindBidirectional(recipient.get().addressProperty());
}
public void recipClicked(MouseEvent event) {
final MultipleSelectionModel<Recipient> get = recipList.selectionModelProperty().get();
final Recipient selectedItem = get.getSelectedItem();
recipient.setValue(selectedItem);
}
}
When I click on the list, the SimpleObjectProperty is updated as expected, but my controls do now show the data. What am I missing?
Your bindings bind to the properties belonging to the current recipient at the time the bindings are made. If the value of recipient changes, then, for example, address.textProperty will still be bound to the addressProperty() of the previous value of recipient, not the new one.
You can use a listener on recipient to bind and unbind the controls:
recipient.addListener((obs, oldRecipient, newRecipient) -> {
if (oldRecipient != null) {
type.valueProperty().unbindBidirectional(oldRecipient.typeProperty());
address.textProperty().unbindBidirectional(oldRecipient.addressProperty());
}
if (newRecipient != null) {
type.valueProperty().bindBidirectional(newRecipient.typeProperty());
address.textProperty().bindBidirectional(newRecipient.addressProperty());
}
});
As an aside, note that you should not use a mouse listener to respond to changes in selection: it will not work, for example, if the user uses the keyboard to change selection in the list view. You can replace recipList.setOnMouseClicked(...) with
recipient.bind(recipList.getSelectionModel().selectedItemProperty());
and remove recipClicked(...) entirely. (In fact, you might not need recipient at all: you can just replace it with recipList.getSelectionModel().selectedItemProperty().)
public class Controller implements Initializable {
#FXML
private ComboBox type;
#FXML
private TextField address;
#FXML
private ListView<Recipient> recipList;
private final ObservableList<String> types = FXCollections.observableArrayList("SMS", "Email");
private final ObservableList<Recipient> recips = FXCollections.observableArrayList(Recipient.DUMMYDATA);
#Override
public void initialize(URL url, ResourceBundle rb) {
type.setItems(types);
recipList.setItems(recips);
recipList.setCellFactory((ListView<Recipient> p) -> new ListCell<Recipient>() {
#Override
public void updateItem(Recipient recip, boolean empty) {
super.updateItem(recip, empty);
if (empty) {
setText(null);
} else {
setText(String.format("%s - %s", recip.typeProperty().get(), recip.addressProperty().get()));
}
}
});
recipList.getSelectionModel().selectedItemProperty().addListener((obs, oldRecipient, newRecipient) -> {
if (oldRecipient != null) {
type.valueProperty().unbindBidirectional(oldRecipient.typeProperty());
address.textProperty().unbindBidirectional(oldRecipient.addressProperty());
}
if (newRecipient != null) {
type.valueProperty().bindBidirectional(newRecipient.typeProperty());
address.textProperty().bindBidirectional(newRecipient.addressProperty());
}
});
}
}
All it's ok when i open light weight's pages but when i wan't to open some bigger the GUI blocks and not responding until the site load's. I try to give it to background thread but it's not working.
MainWindowController:
WebControl webcontroller = new WebControl();
DatabaseControl datacontroller;
#FXML
private ToggleButton PowypadkoweBt;
#FXML
private ToggleButton UszkodzoneBt;
#FXML
private ToggleButton MailBt;
#FXML
private ToggleButton SMSBt;
#FXML
private Button SendBt;
#FXML
private ScrollPane WynikiScroll;
#FXML
private TableView DoneTable;
#FXML
private TableColumn CheckCol, OpisCol, LoginCol;
#FXML
private TextArea MessageArea;
#FXML
private WebView WebControl;
#FXML
private Button NEXT;
#FXML
private Button PREVIOUS;
#FXML
private Label PAGE;
#Override
public void initialize(URL url, ResourceBundle rb) {
this.CheckCol.setCellValueFactory(
new Callback<CellDataFeatures<UsedTableRow, Boolean>, ObservableValue<Boolean>>() {
#Override
public ObservableValue<Boolean> call(CellDataFeatures<UsedTableRow, Boolean> param) {
return param.getValue().getCheckedProperty();
}
});
this.CheckCol.setCellFactory(CheckBoxTableCell.forTableColumn(this.CheckCol));
this.CheckCol.setEditable(false);
this.CheckCol.setMinWidth(50);
this.CheckCol.setMaxWidth(50);
this.OpisCol.setCellValueFactory(new PropertyValueFactory<UsedTableRow, String>("Description"));
this.LoginCol.setCellValueFactory(new PropertyValueFactory<UsedTableRow, String>("Login"));
ObservableList<UsedTableRow> data = FXCollections.observableArrayList();
try {
datacontroller = new DatabaseControl();
data.addAll(datacontroller.getRowsFromEntity());
} catch (ClassNotFoundException ex) {
Alert alert = new Alert(AlertType.WARNING);
alert.setContentText("Nie udało się nawiązać połączenia z bazą danych. Błąd klasy.");
alert.setHeaderText("Błąd klasy.");
alert.setTitle("Błąd");
alert.show();
} catch (SQLException ex) {
Alert alert = new Alert(AlertType.WARNING);
alert.setHeaderText("Błąd SQL.");
alert.setContentText("Nie udało się nawiązać połączenia z bazą danych. Błąd SQL.");
alert.setTitle("Błąd");
alert.show();
}
this.DoneTable.setItems(data);
this.WebControl.getEngine().load("http://otomoto.pl");
this.PAGE.setText((this.webcontroller.getIteratorAuctions() + this.webcontroller.getIteratorItems() - 10) + " z " + this.webcontroller.getItemsIds().size());
// loadNewSite();
this.WebControl.autosize();
this.WebControl.widthProperty().addListener(new ChangeListener<Object>() {
public void changed(ObservableValue<?> observable, Object oldValue, Object newValue) {
Double width = (Double) newValue;
WebControl.setPrefWidth(width);
WebControl.autosize();
}
});
this.WebControl.requestLayout();
this.WebControl.setContextMenuEnabled(false);
this.WebControl.getEngine().setJavaScriptEnabled(true);
this.WebControl.getEngine().setUserAgent("Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.117 Safari/537.36");
this.PowypadkoweBt.setSelected(true);
this.UszkodzoneBt.setSelected(true);
}
#FXML
private void PowypadkoweAction(ActionEvent event) {
if (this.PowypadkoweBt.isSelected()) {
this.webcontroller.refresh(true);
} else {
this.webcontroller.refresh(false);
}
loadNewSite();
}
#FXML
private void UszkodzoneAction(ActionEvent event) {
}
#FXML
private void SMSAction(ActionEvent event) {
}
#FXML
private void MailAction(ActionEvent event) {
}
#FXML
private void SendAction(ActionEvent event) {
}
#FXML
private void PREVIOUSAction(ActionEvent event) {
webcontroller.previousAuction();
loadNewSite();
}
#FXML
private void NEXTAction(ActionEvent event) {
webcontroller.nextAuction();
loadNewSite();
this.WebControl.autosize();
}
private void updateDoneTable() {
ObservableList<UsedTableRow> data = FXCollections.observableArrayList();
data.addAll(datacontroller.getRowsFromEntity());
this.DoneTable.getItems().clear();
this.DoneTable.setItems(data);
}
private void loadNewSite() {
Service<Void> service = new Service<Void>() {
#Override
protected Task<Void> createTask() {
return new Task<Void>() {
#Override
protected Void call() throws Exception {
//Background work
final CountDownLatch latch = new CountDownLatch(1);
Platform.runLater(new Runnable() {
#Override
public void run() {
try {
WebControl.getEngine().load(webcontroller.getSelectedURL());
PAGE.setText((webcontroller.getIteratorAuctions() + webcontroller.getIteratorItems() - 10) + " z " + webcontroller.getItemsIds().size());
} finally {
latch.countDown();
}
}
});
latch.await();
//Keep with the background work
return null;
}
};
}
};
service.start();
/* Task task = new Task(new Runnable() {
#Override
public void run() {
WebControl.getEngine().load(webcontroler.getSelectedURL());
}
});
tr.run();
this.PAGE.setText((this.webcontroler.getIteratorAuctions() + this.webcontroler.getIteratorItems() - 10) + " z " + this.webcontroler.getItemsIds().size());
*/
}}
CInsurance Application class :
#Override
public void start(Stage primaryStage) {
try {
Parent root = FXMLLoader.load(getClass().getResource("/cinsurance/MainWindow.fxml"));
Scene scene = new Scene(root);
scene.getStylesheets().add(getClass().getResource("/cinsurance/mainwindow.css").toExternalForm());
primaryStage.setTitle("Aplikacja Ubezpieczeniowa CInsurance");
primaryStage.setScene(scene);
primaryStage.show();
} catch (IOException ex) {
Logger.getLogger(CInsurance.class.getName()).log(Level.SEVERE, null, ex);
}
}
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}}
Thanks for any help.
After i lost a lot of time on thinking why , i just continue to code modules for this application and i add some multithreading into initialize method of controller and ... it was very strange . Everything is working ok , even when i'm loading heavy page's. I still don't know why multithreading unlocks the blockade... but it can be also the change of JDK because i must change it to 32 bit form 64 bit. After all it is strange.
I want to change the text of a Label with the controller from another class. I have made a method in the FXMLDocumentController, which sets the text to the label:
public void setLabelText(String text)
{
lbZeit.setText(text);
}
Now I want to change this text from another class like my SerialHandlerClass. First, I need the controller, am I right? So I did this:
FXMLLoader loader = new FXMLLoader(FXMLDocumentController.class.getResource("FXMLDocument.fxml"));
loader.load();
controller = (FXMLDocumentController) loader.getController();
Now I run the "setLabelText" method....
controller.setLabelText("asd");
... and nothing happens...
It's very funny, because when I add System.out.println(text); to the "setLabelText(String text)" method, the program writes the correct text to the console.
But, why?
Sorry for my bad english, it's not my native language :)
Thanks,
Julian
You are not updating the label because you are creating another instance of FXMLDocumentController when you use the FXMLoader.
You should set the controller instance, that contains the label, as a parameter to the other Class.
Below you have the code that could solve your need. Here I set the Controller instance to the Connector class, so you can call the setLabelText method from the other class:
public class Connector {
public static void Connecting(FXMLDocumentController controller) {
try {
System.out.println("Connector.Connecting(): Called");
controller.setLabelText("Bye World");
} catch (IOException ex) {
Logger.getLogger(Connector.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
public class FXMLDocumentController implements Initializable {
#FXML
private Label label;
#FXML
private void handleButtonAction(ActionEvent event) {
System.out.println("FXMLDocumentController.#handleButtonAction");
label.setText("Hello World!");
Connector.Connecting(this);
}
#Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
public void setLabelText(String text)
{
System.out.println("FXMLDocumentController.setLabelText(): Called");
label.setText(text);
}
}
Note:
If your routine is going to take longer to execute whatever it needs to, you might want to use a Task, so you don't freeze your UI. To update the Label, you have to bind the text property and then update the Text value using the updateMessage() method.
public class FXMLDocumentController implements Initializable {
#FXML
private Label label;
#FXML
private void handleButtonAction(ActionEvent event) {
System.out.println("FXMLDocumentController.#handleButtonAction");
label.setText("Hello World!");
Task<Boolean> connectorTask = new ConnectorTask();
label.textProperty().bind(connectorTask.messageProperty());
connectorTask.setOnSucceeded(e -> {
// this is going to be called if the task ends up without error
label.textProperty().unbind();
});
new Thread(connectorTask).start();
}
#Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
//public void setLabelText(String text)
//{
// System.out.println("FXMLDocumentController.setLabelText(): Called");
// label.setText(text);
//}
public class ConnectorTask extends Task<Boolean> {
#Override
protected Boolean call() throws Exception {
// ... do whatever you need here
// then you call this method to update the TextProperty from the Label that was bound.
updateMessage("Bye World");
return Boolean.TRUE;
}
}
}
NOTE:
There is a possible duplicate question for this, please see my answer for this question here!