Discussion :

[gerard1638]

bonjour,

est il possible de lire différents fichiers sons de facon séquentielle avec MediaPlayer ?
en gros détecter la fin de lecture du fichier son avant de lancer automatiquement le suivant.
par avance merci

[bouye]

J'ai fait ça qui a l'air de plutôt bien fonctionner :

Code :

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public class MediaPlayerPlaylist extends Application {
 
    private final ReadOnlyObjectWrapper<MediaPlayer> player = new ReadOnlyObjectWrapper<>(this, "player");
 
    @Override
    public void start(Stage primaryStage) throws Exception {
        final List<String> playlist = Arrays.asList(
                "C:\\Users\\Public\\Music\\Sample Music\\Kalimba.mp3",
                "C:\\Users\\Public\\Music\\Sample Music\\Maid with the Flaxen Hair.mp3",
                "C:\\Users\\Public\\Music\\Sample Music\\Sleep Away.mp3");
        final ToggleButton playButton = new ToggleButton("Play");
        playButton.textProperty().bind(new StringBinding() {
            {
                bind(playButton.selectedProperty());
            }
 
            @Override
            public void dispose() {
                unbind(playButton.selectedProperty());
                super.dispose();
            }
 
            @Override
            protected String computeValue() {
                return playButton.isSelected() ? "Pause" : "Play";
            }
        });
        playButton.selectedProperty().addListener(observable -> {
            if (playButton.isSelected()) {
                if (player.get() == null) {
                    switchToMedia(0, playlist);
                } else {
                    player.get().play();
                }
            } else {
                player.get().pause();
            }
        });
        final ProgressBar progressBar = new ProgressBar();
        progressBar.setMaxWidth(Double.MAX_VALUE);
        progressBar.progressProperty().bind(new DoubleBinding() {
            private final ObjectBinding<Duration> currentTime = Bindings.select(player, "currentTime");
            private final ObjectBinding<Duration> totalDuration = Bindings.select(player, "totalDuration");
 
            {
                bind(currentTime, totalDuration);
            }
 
            @Override
            public void dispose() {
                unbind(currentTime, totalDuration);
                currentTime.dispose();
                totalDuration.dispose();
                super.dispose();
            }
 
            @Override
            protected double computeValue() {
                double result = 0;
                final Duration currentTime = this.currentTime.getValue();
                final Duration totalDuration = this.totalDuration.getValue();
                if (currentTime != null && totalDuration != null) {
                    result = currentTime.toMillis() / totalDuration.toMillis();
                }
                return result;
            }
        });
        final BorderPane pane = new BorderPane();
        pane.setCenter(playButton);
        pane.setBottom(progressBar);
        final Scene scene = new Scene(pane, 500, 500);
        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
    }
 
    private void switchToMedia(final int index, final List<String> playlist) {
        final String path = playlist.get(index);
        final File file = new File(path);
        final Media media = new Media(file.toURI().toString());
        final MediaPlayer player = new MediaPlayer(media);
        player.setOnEndOfMedia(() -> {
            player.setOnEndOfMedia(null);
            final int nextIndex = (index + 1) % playlist.size();
            switchToMedia(nextIndex, playlist);
        });
        this.player.set(player);
        player.play();
    }
 
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }
}

Grosso modo, il faut créer un nouveau Media et un nouveau MediaPlayer dès que le précédent est terminé.

[gerard1638]

merci ! j'ai compris le principe