Question

Please write a simple Slideshow program in Java GUI.

There are three buttons in the bottom Panel.

Open: you can choose multiple pictures.

Start: starts the slideshow and change the picture in two seconds.

Stop: you can stop the slideshow.

Answer 1

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import javafx.animation.Animation;
import javafx.application.Application;
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
import javafx.scene.image.ImageView;
import java.util.ArrayList;
import java.io.File;
import javafx.util.Duration;
public class SlideShow extends Application {
    private int currentImage = 1;
    ArrayList<Scene> scenes = new ArrayList<Scene>(0);

    public void start(Stage primaryStage) throws InterruptedException{

        EventHandler<ActionEvent> eventHandler = e -> {
            if (currentImage >= scenes.size()){
                currentImage = 0;
                System.out.println("looping back to the beginning");
            }
            primaryStage.setScene(scenes.get(currentImage++));
            System.out.println("Displaying image no. " + currentImage);
        };

        Timeline slideShow = new Timeline(new KeyFrame(Duration.seconds(2), eventHandler));

        File imageDirectory = new File("/Users/swapnil/IdeaProjects/SlideShow/src/Image");
        for (String image : imageDirectory.list()){

            StackPane tempStack = new StackPane(new ImageView("image/"+image));
            Scene tempScene = new Scene(tempStack);
            tempScene.setOnMouseClicked(e -> {
                System.out.println("Mouse Clicked");
                if (slideShow.getStatus() == Animation.Status.PAUSED){
                    slideShow.play();
                    System.out.println("Playing slideshow");
                }
                else{
                    slideShow.pause();
                    System.out.println("Pausing slideshow");
                }
            });
            scenes.add(tempScene);
        }

        slideShow.setCycleCount(Timeline.INDEFINITE);
        slideShow.play();
        primaryStage.setTitle("Flag Slide Show");
        primaryStage.setScene(scenes.get(0));
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }

}