Issue
I am triying to create a loading window before real application window openning. There is a progressBar in the loading scene and it is undeterminate.
Problem is that; progressbar does not work until the real window open when i execute the program.
by the way i tried preloader class, but also not works too.
here is my code;
public class MainApp2 extends Application {
private Stage loadingStage = new Stage();
public static void main(String[] args) {
launch(args);
}
public void start(final Stage mainStage) throws Exception {
//loading..
loadingScreen();
//start...
appScreen();
}
private void loadingScreen() {
ProgressBar bar = new ProgressBar(ProgressIndicator.INDETERMINATE_PROGRESS);
bar.setPrefWidth(300);
bar.setPrefHeight(200);
loadingStage.initStyle(StageStyle.TRANSPARENT);
loadingStage.initStyle(StageStyle.UNDECORATED);
loadingStage.setScene(new Scene(bar));
loadingStage.show();
}
private void appScreen() {
new Task<Void>() {
@Override
protected Void call() throws Exception {
Stage mainStage = new Stage();
//get real window
Scene root = new Scene(new MyAppWindow().getAppWindow());
mainStage.setScene(root);
mainStage.centerOnScreen();
mainStage.show();
// loadingStage.close();
return null;
}
}.run();
}
public class MyAppWindow {
public BorderPane getAppWindow(){
System.out.println("may be initialize take a long time...");
for (int i = 0; i < 90000000; i++) {
System.out.print("");
}
return new BorderPane(new Label("Here is real application Window!"));
}
}
}
Solution
At least I found that; there is no anyway to init a splash screen in JavaFx. Because JavaFx is managed by one thread. so I tried to this step. It works for me.
public void initAppScreen(final Stage mainStage) {
loadingWindow = new LoadingWindow().getInitWindow();
applicationContext = new ClassPathXmlApplicationContext("hibernate-config.xml");
initSample();
Platform.runLater(new Runnable() {
public void run() {
Scene root = new Scene(new AppWindow().getAppWindow());
mainStage.setScene(root);
mainStage.setTitle("My Application Title");
mainStage.getIcons().add(new Image("/images/logo.png"));
mainStage.setOnCloseRequest(event -> System.exit(0));
mainStage.setWidth(APP_WINDOW_WIDTH);
mainStage.setHeight(APP_WINDOW_HEIGHT);
mainStage.setMinWidth(APP_WINDOW_WIDTH);
mainStage.setMinHeight(APP_WINDOW_HEIGHT);
Rectangle2D screenBounds = Screen.getPrimary().getVisualBounds();
mainStage.setX((screenBounds.getWidth() - APP_WINDOW_WIDTH) / 2);
mainStage.setY((screenBounds.getHeight() - APP_WINDOW_HEIGHT) / 2);
mainStage.show();
loadingWindow.dispose();
}
});
}
And my splash screen
public class LoadingWindow {
public JFrame getInitWindow() {
JFrame loadingFrame = new JFrame();
URL url = this.getClass().getResource("/images/loading.gif");
Icon icon = new ImageIcon(url);
JLabel label = new JLabel(icon);
loadingFrame.setIconImage(new ImageIcon(getClass().getResource("/images/logo.png").getPath()).getImage());
loadingFrame.setUndecorated(true);
loadingFrame.setBackground(new Color(0f, 0f, 0f, 0f));
Rectangle2D screenBounds = Screen.getPrimary().getVisualBounds();
loadingFrame.setLocation((int) ((screenBounds.getWidth() - 600) / 2), (int) ((screenBounds.getHeight() - 0) / 2));
loadingFrame.getContentPane().add(label);
loadingFrame.pack();
loadingFrame.setLocationRelativeTo(null);
loadingFrame.setVisible(true);
return loadingFrame;
}
}
Answered By - stephan
