In my code I can switch to another scene using buttons like this:
public void handleButtonClick(MouseEvent event) throws IOException {
Parent menu_parent = FXMLLoader.load(getClass().getResource("/FXML/FXMLmm2.fxml"));
Scene SceneMenu = new Scene(menu_parent);
Stage stage = (Stage) ((Node) event.getSource()).getScene().getWindow();
stage.setScene(SceneMenu);
stage.show();
}
Now I have a method in the controller class which should open a scene without an event:
public void showResult(boolean win) throws IOException {
if (win == true) {
Parent menu_parent = FXMLLoader.load(getClass().getResource("/FXML/FXMLWinScreen.fxml"));
Scene SceneMenu = new Scene(menu_parent);
Stage stage = new Stage();
stage.setScene(SceneMenu);
stage.show();
}
The problem is, I don't know how to get the node for the stage, this program is only working when I open a whole new stage/window.
How can I switch to a new Scene without an events and opening a new stage?
You can use any #FXML injected node from your controller class,
Let's say you have a button
#FXML private Button show;
Now use that button show.getParent().getScene().getWindow() to get the current stage,
public void showResult(boolean win) throws IOException {
if (win == true) {
Parent menu_parent = FXMLLoader.load(getClass()
.getResource("/FXML/FXMLWinScreen.fxml"));
Scene SceneMenu = new Scene(menu_parent);
Stage stage = (Stage)show.getParent().getScene().getWindow();
stage.setScene(SceneMenu);
stage.show();
}
}
But make SURE that showResult executes after the controller initialization and the node is injected.
Related
I'm trying to use my scene, home, as a scene in start.
However it does not work and instead of getting my 300 x 300, I get a blank 900 x 400 screen. Perhaps it's something very easily detectable but I'm not seeing it?
private Scene home;
private Stage window;
public Scene home(Scene home) {
// build my scene
return home = new Scene(root, 300, 300);
}
#Override
public void start(Stage primaryStage) throws Exception {
window = primaryStage;
window.setScene(home);
window.show();
}
I'm trying to create my scenes as methods so I can keep them out of start.
The plan is to switch between scenes later by using: btn.setOnAction(e -> window.setScene(anotherScene));, thanks in advance everyone!
You never call the home method. Therefore the home field will remain null which is the value you pass to window.setScene.
Furthermore I'd call the home method is implemented in a strange way:
public Scene home(Scene home) {
The parameter is never read.
return home = new Scene(root, 300, 300);
This assigns the value to the method parameter, not to the scene before it returns the scene, which has no effect, since java is call-by-value.
You could implement it like this:
private Scene home;
private Stage window;
public Scene home() {
if (home == null) {
// build my scene
home = new Scene(root, 300, 300)
// or maybe do this without testing, if the scene was created before???
}
return home;
}
#Override
public void start(Stage primaryStage) throws Exception {
window = primaryStage;
window.setScene(home()); // use the method here
window.show();
}
I cant set the text of a Textfield. There is no error but the Textfield is still empty.
The rest of the program is working, the method is called and the System.out.println(...) prints the right text.
So the problem is, the text of the textfield cant be set. Even if i just write textField.setText("0"); the textfield is still empty.
When I set the text for the textfield under public void initialize(...) it also works. So why doesn't it work in setCurrentInfo?
#FXML
private TextField textField;
private Info currentInfo;
#Override
public void initialize(URL url, ResourceBundle rb) {
}
public void setCurrentInfo(Info currentInfo) {
textField.setText(currentInfo.getpw1());
System.out.println(currentInfo.getpw1());
this.currentInfo = currentInfo;
}
The part of the controller where setCurrentInfo is called:
#FXML
private void handleBtn1(ActionEvent event) throws Exception{
Info info = new Info(textFieldA.getText(), textFieldB.getText());
FXMLLoader loader = new FXMLLoader();
loader.setLocation(getClass().getResource("FXMLPassword.fxml"));
loader.load();
Stage stage;
Parent root;
if(event.getSource()==btn1){
//get reference to the button's stage
stage=(Stage) btn1.getScene().getWindow();
//load up OTHER FXML document
root = FXMLLoader.load(getClass().getResource("FXMLPassword.fxml"));
}
else{
stage=(Stage) btn1.getScene().getWindow();
root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));
}
//create a new scene with root and set the stage
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
FXMLPasswordController passwordController = loader.getController();
passwordController.setCurrentInfo(info);
}
You are retrieving the controller from the wrong FXMLLoader. In particular, you do:
FXMLLoader loader = new FXMLLoader();
loader.setLocation(getClass().getResource("FXMLPassword.fxml"));
loader.load();
and then later
FXMLPasswordController passwordController = loader.getController();
In this code, you create an FXMLLoader and point it to the FXMLPassword.fxml file. But when you call loader.load(), which reads the fxml file and creates the UI defined in it, you do nothing with the result. So the UI created by that call to loader.load() is never displayed.
Consequently, when you get the controller from that loader, and use it to make changes to the UI, you will never see those changes because that instance of the TextField is not displayed.
The TextField that is displayed is created when you call
root = FXMLLoader.load(getClass().getResource("FXMLPassword.fxml"));
but since you use the static version of the FXMLLoader.load(...) method here, you have no opportunity to get the controller associated with it.
You need to refactor the code as follows:
#FXML
private void handleBtn1(ActionEvent event) throws Exception{
Info info = new Info(textFieldA.getText(), textFieldB.getText());
Stage stage;
Parent root;
if(event.getSource()==btn1){
//get reference to the button's stage
stage=(Stage) btn1.getScene().getWindow();
//load up OTHER FXML document
FXMLLoader loader = new FXMLLoader();
loader.setLocation(getClass().getResource("FXMLPassword.fxml"));
root = loader.load();
FXMLPasswordController passwordController = loader.getController();
passwordController.setCurrentInfo(info);
}
else{
stage=(Stage) btn1.getScene().getWindow();
root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));
}
//create a new scene with root and set the stage
Scene scene = new Scene(root);
stage.setScene(scene);
stage.show();
}
We are using more than one stage(window) in JavaFX for a desktop standalone application. So when we drag or move any of the stage(window) form one point to another and clicking a certain button to navigate to the other page means the new stage is coming to center again(default position). Is there any methods to set the future stage(future windows) also in the previous stage location or point(previous windows). Please help.
You can control stage location before showing it. Just remember last stage coordinates and create new one in the same point:
public class FXStages extends Application {
private int counter = 0;
#Override
public void start(final Stage stage) {
Button btn = new Button();
btn.setText("Reopen");
btn.setOnAction(new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
stage.close();
Stage newStage = new Stage();
newStage.setX(stage.getX());
newStage.setY(stage.getY());
start(newStage);
}
});
StackPane root = new StackPane();
root.getChildren().add(btn);
Scene scene = new Scene(root, 300, 250);
stage.setTitle("Stage " + counter++);
stage.setScene(scene);
stage.show();
}
}
Is there any way of getting the Stage/Window object of an FXML loaded file from the associated class controller?
Particularly, I have a controller for a modal window and I need the Stage to close it.
I could not find an elegant solution to the problem. But I found these two alternatives:
Getting the window reference from a Node in the Scene
#FXML private Button closeButton ;
public void handleCloseButton() {
Scene scene = closeButton.getScene();
if (scene != null) {
Window window = scene.getWindow();
if (window != null) {
window.hide();
}
}
}
Passing the Window as an argument to the controller when the FXML is loaded.
String resource = "/modalWindow.fxml";
URL location = getClass().getResource(resource);
FXMLLoader fxmlLoader = new FXMLLoader();
fxmlLoader.setLocation(location);
fxmlLoader.setBuilderFactory(new JavaFXBuilderFactory());
Parent root = (Parent) fxmlLoader.load();
controller = (FormController) fxmlLoader.getController();
dialogStage = new Stage();
controller.setStage(dialogStage);
...
And FormController must implement the setStage method.
#FXML
private Button closeBtn;
Stage currentStage = (Stage)closeBtn.getScene().getWindow();
currentStage.close();
Another way is define a static getter for the Stage and Access it
Main Class
public class Main extends Application {
private static Stage primaryStage; // **Declare static Stage**
private void setPrimaryStage(Stage stage) {
Main.primaryStage = stage;
}
static public Stage getPrimaryStage() {
return Main.primaryStage;
}
#Override
public void start(Stage primaryStage) throws Exception{
setPrimaryStage(primaryStage); // **Set the Stage**
Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
primaryStage.setTitle("Hello World");
primaryStage.setScene(new Scene(root, 300, 275));
primaryStage.show();
}
}
Now you Can access this stage by calling
Main.getPrimaryStage()
In Controller Class
public class Controller {
public void onMouseClickAction(ActionEvent e) {
Stage s = Main.getPrimaryStage();
s.close();
}
}
The first stage that I load it always open properly as fullscreen.
stage.setFullScreen(true);
stage.setScene(login_scene);
But when I change to another FXML the applications stays fullscreen (no top toolbar.. ), but the actual view content gets resized on the prefWidth/prefHeight of the root AnchorPane from FXML (I can see the desktop in my bottom right corner :|), and I want it to be dynamic to my screen resolution.
Thanks.
#Later Edit:
So on the start method of my main Class I load a Scene (created from an FXML doc) and set it to the Stage (the start method param). I save this stage for later use.
When I press a button with the same stage I save previously I change the scene to another FXML document
#Screenshots:
http://tinypic.com/r/2079nqb/6 - 1st scene works normally - code from start override method of the main class
#Override
public void start(Stage stage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("Sample.fxml"));
stage.setScene(new Scene(root));
stage.setFullScreen(true);
stage.show();
currentStage = stage;
}
http://tinypic.com/r/szfmgz/6 - after reloading the second scene - the code below from sample controller class
#FXML
private void handleButtonAction(ActionEvent event) throws IOException {
Parent root = FXMLLoader.load(getClass().getResource("Sample.fxml"));
JavaFXApplication12.currentStage.setScene(new Scene(root));
}
I have no idea about the real cause but here are 2 quick workarounds.
In the handleButtonAction method:
1) Don't create new scene just replace its content
#FXML
private void handleButtonAction(ActionEvent event) throws IOException {
Parent root = FXMLLoader.load(getClass().getResource("Sample.fxml"));
JavaFXApplication12.currentStage.getScene().setRoot(root);
}
2) If you really nead to create new scene then toggle fullscreen
#FXML
private void handleButtonAction(ActionEvent event) throws IOException {
Parent root = FXMLLoader.load(getClass().getResource("Sample.fxml"));
JavaFXApplication12.currentStage.setScene(new Scene(root));
Platform.runLater(new Runnable() {
#Override
public void run() {
JavaFXApplication12.currentStage.setFullScreen(false);
JavaFXApplication12.currentStage.setFullScreen(true);
}
});
}
If I am right to know your concern then You should use your primary stage as static or you can make it available to other controller by making getters and setters. So to get same stage to load other fxmls you can set it to when you are loading a fxml and also make sure that do not create another scene. Because due to new scene you actual content resized.
So you can use this
In Main.java:
YourController objYourController = loader.getController();
objYourController.setDialogStage(primaryStage);
In YourController.java:
public void setMystage(Stage primaryStage) {
this.primaryStage= primaryStage;
}
//To load another FXML
Parent root = FXMLLoader.load(getClass().getResource("Sample.fxml"));
primaryStage.getScene().setRoot(rootLayout);
Hope it will help you.