在动画的onFinished事件处理程序使用showAndWait不起作用 [英] Using showAndWait in the onFinished EventHandler of an Animation doesn't work

问题描述

在JavaFX中，我希望有一个动画结束后显示一个模式对话框。出于某种原因，是可以获得动画结束后执行的事件处理程序调用showAndWait不起作用。显示一个新窗口，但似乎没有什么是它里面的绘制。

In JavaFx, I want to show a modal dialog after an animation ends. For some reason, calling showAndWait in the EventHandler that gets executed after the animation ends doesn't work. A new window is shown, but it seems like nothing is drawn inside it.

此示例演示问题：

public void start(Stage primaryStage) {
    Rectangle rect = RectangleBuilder.create().width(200).height(200).fill(Color.RED).build();

    StackPane root = new StackPane();
    root.getChildren().add(rect);

    Timeline animation = new Timeline();
    animation.getKeyFrames().addAll(
            new KeyFrame(new Duration(1000),
                         new KeyValue(rect.widthProperty(), 100),
                         new KeyValue(rect.heightProperty(), 100)),
            new KeyFrame(new Duration(2000),
                         new KeyValue(rect.widthProperty(), 300),
                         new KeyValue(rect.heightProperty(), 300))
    );
    animation.setOnFinished(new EventHandler<ActionEvent>() {

        @Override
        public void handle(ActionEvent t) {
            Stage stage = new Stage();
            StackPane pane = new StackPane();
            pane.getChildren().add(new Label("Hello world"));
            stage.setScene(new Scene(pane, 100, 100));
            stage.showAndWait();
        }
    });
    animation.setCycleCount(1);

    Scene scene = new Scene(root, 300, 300);
    primaryStage.setScene(scene);
    primaryStage.show();

    animation.play();
}

满code可以在 https://gist.github.com/bmesuere/9605866 找到

我想知道为什么不工作（使用Java 1.7.0_51我的MacBook），并得到一个解决办法的建议。

I'd like to know why this doesn't work (on my macbook using java 1.7.0_51) and get suggestions for a workaround.

推荐答案

我已举报此作为JavaFX的（错误的 JIRA问题）。

I have reported this as a bug in JavaFX (Jira issue).

这是该问题的评论：

的问题是，当showAndWait（）正在被处理时脉冲被称为没有后续脉冲定

The problem is that no subsequent pulse is scheduled when showAndWait() is called while pulse is being processed.

这是在Java中8u20固定。一个例外是现在抛出。变化可以在这里看到 。

This was 'fixed' in Java 8u20. An exception is now thrown. Changes can be seen here.

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