java - 如何让2个动画连续运行

Question

我是 JavaFX 新手

我想让2个动画连续运行

然后我尝试创建 2 个圆圈，让第一个 (AQUA) 圆圈播放动画 1，然后让第二个 (RED) 圆圈播放动画 2。但如果只是这样，2 个动画将同时播放。

然后我尝试向其中添加 Thread.sleep():

import javafx.util.Duration;

import javafx.animation.TranslateTransition;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;

public class TestAnimation2 extends Application{
    @Override
    public void start(Stage primaryStage) throws Exception {
        Pane pane = new Pane();
        pane.setMinSize(1800, 900);
        Group root = new Group(pane);
        Scene mainScene = new Scene(root);

        Circle cir1 = new Circle(100, 100, 30);
        cir1.setFill(Color.AQUA);
        pane.getChildren().add(cir1);

        TranslateTransition animation1 = new TranslateTransition();
        animation1.setToX(300);
        animation1.setToY(0);
        animation1.setDuration(Duration.seconds(2));
        animation1.setNode(cir1);



        Circle cir2 = new Circle(100, 200, 30);
        cir2.setFill(Color.RED);
        pane.getChildren().add(cir2);

        TranslateTransition animation2 = new TranslateTransition();
        animation2 = new TranslateTransition();
        animation2.setToX(300);
        animation2.setToY(0);
        animation2.setDuration(Duration.seconds(2));
        animation2.setNode(cir2);

        primaryStage.setScene(mainScene);
        primaryStage.setResizable(false);
        primaryStage.show();

        animation1.play();

        try {
            Thread.sleep(2000);
        } catch (Exception e) {System.out.println(e);}

        animation2.play();
    }

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

但是当我尝试运行它时，我不明白为什么我看不到 animation1，程序停止，当它开始运行 animation2 时，它出现了。

如何让2个动画连续运行

Answer 1

您可以使用SequentialTransition:

public class TestAnimation2 extends Application{
    @Override
    public void start(Stage primaryStage) throws Exception {
        Pane pane = new Pane();
        pane.setMinSize(1800, 900);
        Group root = new Group(pane);
        Scene mainScene = new Scene(root);

        Circle cir1 = new Circle(100, 100, 30);
        cir1.setFill(Color.AQUA);
        pane.getChildren().add(cir1);

        TranslateTransition animation1 = new TranslateTransition();
        animation1.setToX(300);
        animation1.setToY(0);
        animation1.setDuration(Duration.seconds(2));
        animation1.setNode(cir1);



        Circle cir2 = new Circle(100, 200, 30);
        cir2.setFill(Color.RED);
        pane.getChildren().add(cir2);

        TranslateTransition animation2 = new TranslateTransition();
        animation2.setToX(300);
        animation2.setToY(0);
        animation2.setDuration(Duration.seconds(2));
        animation2.setNode(cir2);

        primaryStage.setScene(mainScene);
        primaryStage.setResizable(false);
        primaryStage.show();

        SequentialTransition animation = new SequentialTransition(animation1, animation2);
        animation.play();  

    }

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

或者，您可以使用第一个动画的 onFinished 处理程序来播放第二个:

public class TestAnimation2 extends Application{
    @Override
    public void start(Stage primaryStage) throws Exception {
        Pane pane = new Pane();
        pane.setMinSize(1800, 900);
        Group root = new Group(pane);
        Scene mainScene = new Scene(root);

        Circle cir1 = new Circle(100, 100, 30);
        cir1.setFill(Color.AQUA);
        pane.getChildren().add(cir1);

        TranslateTransition animation1 = new TranslateTransition();
        animation1.setToX(300);
        animation1.setToY(0);
        animation1.setDuration(Duration.seconds(2));
        animation1.setNode(cir1);



        Circle cir2 = new Circle(100, 200, 30);
        cir2.setFill(Color.RED);
        pane.getChildren().add(cir2);

        TranslateTransition animation2 = new TranslateTransition();
        animation2.setToX(300);
        animation2.setToY(0);
        animation2.setDuration(Duration.seconds(2));
        animation2.setNode(cir2);

        primaryStage.setScene(mainScene);
        primaryStage.setResizable(false);
        primaryStage.show();

        animation1.setOnFinished(event -> animation2.play());

        animation1.play();

    }

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