How to create a custom loading screen in JavaFX? - javafx

Question

I'd like to create a custom loading screen for a JavaFX application. Don't want the user to see the Java coffee cup icon, I want to put my own graphic there!
I've found out how to provide a static image, or even an animated GIF, but I'm more interested in a Flash-like screen where I can specify what the state of the image looks like at certain percentages.
Any ideas?

Answer 1

For JavaFX2, you can set a custom preloader. You have complete control over then scene. I haven't used them personally, but this might be what you want.
http://docs.oracle.com/javafx/2/deployment/preloaders.htm

Answer 2

JavaFX preloader class
I have created a very simple preloader screen using native JavaFX APIs. Here it's explained how to do this: https://docs.oracle.com/javafx/2/deployment/preloaders.htm (old but workable examples) - this is newer and seems to be the same: https://docs.oracle.com/javase/8/docs/technotes/guides/deploy/preloaders.html (Newer page and JavaFX version but I don't see the difference).
The older link is easier to read, because of page formatting.
Main class
package YOUR_PACKAGE_NAME;
import javafx.application.Application;
/**
* Minimal reproducible example (MRE) - Example of a simple JavaFX preloader.
* Java Main class for starting up the JavaFX application with a call to launch MainApplication.
* #author Remzi Cavdar - ict#remzi.info - #Remzi1993
*/
public class Main {
public static void main(String[] args) {
/*
* The following Java system property is important for JavaFX to recognize your custom preloader class.
* Which should extend javafx.application.Preloader.
*/
System.setProperty("javafx.preloader", Preloader.class.getName());
// Launch the main JavaFX application class.
Application.launch(MainApplication.class, args);
}
}
Preloader class
package YOUR_PACKAGE_NAME;
import javafx.scene.Scene;
import javafx.scene.control.ProgressBar;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;
/**
* Minimal reproducible example (MRE) - Example of a simple JavaFX preloader class.
* #author Remzi Cavdar - ict#remzi.info - #Remzi1993
*/
public class Preloader extends javafx.application.Preloader {
private ProgressBar progressBar;
private Stage stage;
private Scene createPreloaderScene() {
progressBar = new ProgressBar();
BorderPane borderPane = new BorderPane();
borderPane.setCenter(progressBar);
return new Scene(borderPane, 800, 600);
}
#Override
public void start(Stage stage) throws Exception {
this.stage = stage;
// I also recommend to set app icon: stage.getIcons().add();
stage.setTitle("YOUR TILE HERE");
stage.setScene(createPreloaderScene());
stage.show();
}
#Override
public void handleProgressNotification(ProgressNotification pn) {
progressBar.setProgress(pn.getProgress());
}
#Override
public void handleStateChangeNotification(StateChangeNotification evt) {
if (evt.getType() == StateChangeNotification.Type.BEFORE_START) {
stage.hide();
}
}
}
Testing
Tested on: 01-11-2022
Tested OS: Windows 11 - Version 21H2 (OS Build 22000.1098)
Tested with: OpenJDK 19 - Eclipse Temurin JDK with Hotspot 19.0.1+10 (x64) (See: https://adoptium.net/en-GB/temurin/releases/?version=19)
Tested with JavaFX (OpenJFX) version: OpenJFX 19 (See: https://openjfx.io and repo: https://github.com/openjdk/jfx)

Answer 3

If you're setting things up as shown on This blog entry, it looks like the answer would be 'no' - the loading graphic is just part of the overall options that are passed to the applet. Because this applet could be any java code (not just javaFX), there's no way to tie your custom renderer in.

Answer 4

you should use java timer:
Timer tm= new Timer();
Stage ilk;
int count;
public void check() {
ilk=new Stage();
TimerTask mission;
gorev = new TimerTask() {
#Override
public void run() {
Group root = new Group();
Scene scene;
scene = new Scene(root, 960, 540);
scene.setFill(Color.BLACK);
ilk.setScene(scene);
ilk.setTitle("Splash Screen");
sayac++;
if(count==5){
tm.cancel();
ilk.show();
}
}
};
tm.schedule(mission, 0, 2000);
}

Answer 5

For changing the coffee cup icon:
stage.getIcons().add(new Image("images/myimage.png"));
and here is a reference for a very clear preloader screen out there and awesome css too:
http://docs.oracle.com/javafx/2/best_practices/jfxpub-best_practices.htm