JavaFX中的背景图片 [英] Background image in JavaFX

问题描述

我正在尝试获取要在javaFX场景中加载的背景图像.我在这里找到的答案不起作用.窗口打开，但为空白(无图像).

I am trying to get a background image to load in a javaFX scene. The answers I have found on here are not working. The window opens, but it is blank (no image).

public class FirstFX extends Application {

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

    @Override
    public void start(Stage stage) throws Exception {
        StackPane root = new StackPane();
        BackgroundImage myBI= new BackgroundImage(new Image("SnLBoard.png"),
            BackgroundRepeat.REPEAT, BackgroundRepeat.NO_REPEAT, BackgroundPosition.DEFAULT, BackgroundSize.DEFAULT);
        root.setBackground(new Background(myBI));
        stage.show();
    }
}

推荐答案

您尚未将根与任何内容相关联，因此该阶段中没有任何显示内容:

You haven't associated the root to anything, so nothing is showing within the stage:

StackPane root = new StackPane();
Scene scene = new Scene(root, 640, 480);
... //Display code and logic
stage.setScene(scene);
stage.show();

您还可以考虑设置窗格的最小/首选/最大大小.在这段代码之后，您将要启动一个线程，该线程开始您的应用程序逻辑.

You might also consider setting the min/preferred/max size of your pane. After this code, you'll want to start a thread that begins your application logic.

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