Here's an example as requested by Nir:
public class FxTimeLineTest extends Application
{
private BorderPane bp = new BorderPane( new Label("Loading") );
public static void main( String[] args ) {
launch( FxTimeLineTest.class, args );
}
@Override
public void start( Stage primaryStage ) throws Exception {
new Thread( new LoadScene() ).start();
primaryStage.setScene( new Scene( bp, 300, 200 ) );
primaryStage.setTitle( "Memory Usage" );
primaryStage.show();
}
private class LoadScene extends Task<Parent> {
@Override protected Parent call() throws Exception {
Parent p = FXMLLoader.load(
getClass().getResource("TestView.fxml") );
Thread.sleep( 1000 );
return p;
}
@Override protected void succeeded() {
bp.setCenter( getValue() );
}
@Override protected void failed() {
getException().printStackTrace();
}
}
}
------------------------------------------------------------------------------------------------------
public class TestView
{
@FXML private Label memory;
private static final double MEGABYTE = 1024 * 1024;
@FXML private void initialize()
{
var updater = new Timeline
(
new KeyFrame( Duration.seconds(2.5), event ->
{
var runtime = Runtime.getRuntime();
double maxMemory = runtime.maxMemory() / MEGABYTE;
double usedMemory = (runtime.totalMemory() -
runtime.freeMemory()) / MEGABYTE;
memory.setText( (int) usedMemory + " MB / " + (int)
maxMemory +" MB" );
})
);
updater.setCycleCount(Animation.INDEFINITE);
// This FXML is being loaded on a background thread
updater.play();
}
}
------------------------------------------------------------------------------------------------------
TestView.fxml
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.StackPane?>
<StackPane xmlns:fx="http://javafx.com/fxml/1"; fx:controller="TestView">
<children>
<Label fx:id="memory" text="Current / Max MB" >
<properties hashCode="12345" />
</Label>
</children>
</StackPane>
On Sat, 20 Jan 2024 17:08:41 +0200, Nir Lisker <nlis...@gmail.com> wrote:
Hi Jurgen,
What I'm confused about the most is what it is you are actually trying
to do that necessitates the use of animations outside of the FX thread.
>You said that you need to initialize controls on another thread, and
that you are using Task (both of which are fine), but how does playing
>animations relate? Playing an animation is something that is done
explicitly, usually in order to manipulate data. Can you give a real use
>case, like a minimized version of what you're doing?
- Nir
