I am newbie on JavaFX. I need to open another screen on button click which already created.
For this, i try to search but didn't get anything helpful because every tutorial which i find are redirecting to create new screen. But i want to open screen which already created.
For this,
i write following code in controller.java
#FXML
public void handleNewTestBedButtonAction(ActionEvent event) throws IOException {
URL url = getClass().getResource("com/sobc/testbed/gui/testbedform.fxml");
FXMLLoader fxmlloader = new FXMLLoader();
fxmlloader.setLocation(url);
fxmlloader.setBuilderFactory(new JavaFXBuilderFactory());
AnchorPane pane = new AnchorPane();
pane.getChildren().clear();
pane.getChildren().add((Node) fxmlloader.load(url.openStream()));
// here we go
//((SOARiteController) fxmlloader.getController()).setContext();
}
fxml code
<Button id="newtestbedbtn" fx:id="newTestBedButtonId" mnemonicParsing="false" onAction="#handleNewTestBedButtonAction" onMouseEntered="#NewTestBedButtonMouseEntered" onMouseExited="#NewTestBedButtonMouseExited" styleClass="imgbtn" text="" wrapText="false">
But i am getting following exception
Caused by: java.lang.NullPointerException
at com.soab.SOARiteController.handleNewTestBedButtonAction(SOARiteController.java:52)
I don't understand how to open one screen on another screen.
Please give me reference or hint.
Use following code in replacement of your Fxml loader, this is a correct way to load fxml file.
URL url = getClass().getResource("com/sobc/testbed/gui/testbedform.fxml");
FXMLLoader loader = new FXMLLoader(url);
Node node = (Node) loader.load();
Related
This question already has an answer here:
How do I determine the correct path for FXML files, CSS files, Images, and other resources needed by my JavaFX Application?
(1 answer)
Closed 2 years ago.
I have a file named Home.fxml which is a BorderPane. This component has buttons on the left and an empty TabPane called mainTabPane in the centre. I would like, when a user clicks on any button on the left, to add a tab to mainTabPane. I am able to add one tab when one button is clicked. But when I try to do the same for the second button, I get this error:
java.lang.IllegalStateException: Location not set
Here is the code for HomeController.java, where all is done:
public void initialize(URL loc, Resource Rse) {
createReportsTab();
loadCreateItemTab();
}
/*this is the one which works well*/
#FXML
void CreateReportTab() {
FXMLLoader loader = new FXMLLoader();
loader.setLocation(ReportsController.class.getResource("gui/Reports.fxml"));
Parent parent = loader.load();
Tab reportsTab = new Tab("Reporting Engine");
reportsTab.setClosable(true);
reportsTab.setcontent(parent);
mainTabPane.getTabs().add(reportsTab),
}
/*this is the one which produces the error*/
#FXML
void loadCreateItemTab() {
FXMLLoader loader = new FXMLLoader();
loader.setLocation(AddNewItemController.class.getResource("gui/addNewItem.fxml"));
Parent parent = loader.load();
Tab newItemTab= new Tab("New Item");
newItemTab.setClosable(true);
newItemTab.setcontent(parent);
mainTabPane.getTabs().add(newItemTab),
}
I am confused; why the Reporting Engine loads well but the second one is producing that error above?
Here is my project structure in IntelliJ IDEA:
All controller classes are in the controllers package and all FXML files are in the GUI package. The main class is in Companion package.
Error suggests that addNewItem.fxml is not read. Change:
AddNewItemController.class.getResources("gui/addNewItem.fxml");
to
ReportsController.class.getResources("gui/addNewItem.fxml");
, since this path worked for you already.
I use the below code to open a javafx fxml file in a different window on a button click event and it works fine. But if I click the same button again while the window opened it will create a duplicate window. Is there a possibly solutions to overcome this problem? Thanks in advance.
Parent parent = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));
Stage stage = new Stage(StageStyle.DECORATED);
stage.setTitle("Title");
stage.setScene(new Scene(parent));
stage.show();
I just stumbled upon this old question and figured I might answer it for anyone new to JavaFX or coding in general (I'm bored..).
In the provided code (see below) a new Stage is created every time, meaning that if this is run inside of a method you actually create a new Stage variable every time that the code is run:
Stage stage = new Stage(StageStyle.DECORATED);
What you could do instead create your Stage variable outside the method so that you either 1. just overwrite it every time or 2. have some "is showing" or a nullcheck or similar to see if a new stage should be created or if the existing one just needs to be shown.
For example:
private Stage stage;
private void onOpenNewStageBtnClicked(){
if(stage == null){
Parent parent = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));
stage = new Stage(StageStyle.DECORATED);
stage.setTitle("Title");
stage.setScene(new Scene(parent));
}
stage.show();
}
Also, what I usually do is I create a Stage factory to avoid a lot of duplicate code and so that I can break out the creation of the stages and the loading of fxmls to other classes than my controller.
Trying to start using DataFX ,, i wanna load an FXML view into another Pane, so i have a stage that is showing, on user action will add another FXML view to a Pane on the showing stage,
i usually do that this way :
fxmlLoader = constructFXMLLoader(FXMLPath);
root = (Parent) this.fxmlLoader.load();
private FXMLLoader constructFXMLLoader(String FXMLPath) {
FXMLLoader fxmlLoader = new FXMLLoader();
fxmlLoader.setLocation(getURL(stageFXMLName));
fxmlLoader.setBuilderFactory(new JavaFXBuilderFactory());
return fxmlLoader;
}
there i have the root so i can add it where ever i want, the question is how to do that with DataFX
i did a quick research but found nothing !
just figured out the answer
FlowHandler flowHandler = new Flow(Controller.class).createHandler();
flowHandler.getCurrentView().getViewContext().getRootNode();
I'm new to JavaFX and i have a little problem with the UI.
I'm using JavaFX 8 and want to create my UI with FXML files.
I have created a pane with a header, a menubar and the placeholder for the content (This is the place where i want to load the others FXML files in when i press a Button from the menu bar). The content area is a AnchorPane.
I have tryed it with this:
#FXML
private AnchorPane aContent;
#FXML
protected void test(ActionEvent event) {
aContent.getChildren().setAll(FXMLLoader.load("view/ezMovieContent.fxml"));
}
The AnchorPane aContent is the content area in my scene. When i use this code i always get the message on the load() method
The method load(InputStream) in the type FXMLLoader is not applicable for the arguments (String)
Thank you for your help,
With regards, Timo
I want to make a button on an AnchorPane without drag it from the library in the FXML file I want to do it progammatically: if the search button clicked, should show a new button not existed in the AnchorPane before I did this code but I don't know what is wrong with it:
private void searchButton(ActionEvent evt) {
Button tab = new Button();
tab.setLayoutX(147);
tab.setLayoutY(102);
tab.setText("Tab1");
tab.setPrefHeight(27);
tab.setPrefWidth(69);
WebView wb = new WebView();
wb.setLayoutX(-1);
wb.setLayoutY(128);
wb.setPrefWidth(1604);
wb.setPrefWidth(700);
}
I am assuming that you searchButton method is in controller attached to some FXML. Then all you need to do is this:
yourAnchorPane.getChildren().add(tab);
If you don't have already published reference to anchorPane in your controller, then add this into your controller
#FXML
AnchorPane yourAnchorPane;
And in SceneBuilder select your anchorPane, go to code tab and enter "yourAnchorPane" as fx:id.
Further info on working with anchorpane is javadoc.
You probably also want to set some constraints on the tab to locate it at a position within the AnchorPane. For instance, the following code will locate your button tab relative to the top left corner of the AnchorPane: Ten pixels down and fifteen pixels to the right.
AnchorPane.setTopAnchor(tab, 10.0);
AnchorPane.setLeftAnchor(tab, 15.0);