[[oktatas:programozás:java:java_fx|< Java FX]]

====== JavaFX - Időzítés ======

  * **Szerző:** Sallai András
  * Copyright (c) 2025, Sallai András
  * Licenc: [[https://creativecommons.org/licenses/by-sa/4.0/|CC BY-SA 4.0]]
  * Web: https://szit.hu

===== Másodpercenként =====

<code java src/java/com/example/MainController.java>
package com.example;

import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.util.Duration;

public class MainController {
        @FXML
    void onClickStartButton(ActionEvent event) {
        

        KeyFrame kf = new KeyFrame(Duration.seconds(1), e -> {
            System.out.println("idő van");
        });

        Timeline tm = new Timeline();
        tm.getKeyFrames().add(kf);
        tm.setCycleCount(Timeline.INDEFINITE);
        tm.play();

    }
}

</code>


Megadható hányszor egész számként vagy végtelenszer:
<code java>
tm.setCycleCount(Timeline.INDEFINITE);
</code>

===== Téglalap mozgatása =====

<code java src/main/java/com/example/MainController.java>
package com.example;

import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.Timeline;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;

public class MainController {

    @FXML
    private Pane panel;

    Rectangle rec = new Rectangle(0, 0, 100, 100);
    KeyValue xValue = new KeyValue(rec.xProperty(), 200);
    KeyValue yValue = new KeyValue(rec.yProperty(), 200);
    KeyFrame frame = new KeyFrame(javafx.util.Duration.millis(1000), xValue, yValue);

    @FXML
    void initialize() {
        rec.setFill(Color.BLUE);
    }
    
    @FXML
    void onClickStartButton(ActionEvent event) {
        System.out.println("indul...");
        panel.getChildren().add(rec);
        Timeline line = new Timeline();        
        line.getKeyFrames().add(frame);
        line.setCycleCount(3);
        line.setAutoReverse(true);
        line.play();
    }

}

</code>