javafx-替換BorderPane的背景圖像

Question

我在Scene上有BorderPane 。在該窗格中有背景圖片。 我的圖像代碼：

BorderPane B_pane = new BorderPane();
Image image = new Image("/Client/social3.png",width,height,false,true,true);
ImageView imageView = new ImageView(image);
B_pane.getChildren().add(imageView);

后來我在該窗格中的左，右部分添加了一些VBox我想通過單擊特定的Button來更改BorderPane的背景圖像（顯然不會導致VBox的位置，元素發生任何變化）。我該怎么做？

Answer 1

只是真正使用背景圖像，而不是將ImageView添加為子ImageView ：

@Override
public void start(Stage primaryStage) {
    BorderPane borderPane = new BorderPane();
    Image image1 = new Image("https://cdn.sstatic.net/Sites/stackoverflow/company/img/logos/se/se-logo.png?v=dd7153fcc7fa");
    Image image2 = new Image("https://cdn.sstatic.net/Sites/stackoverflow/company/img/logos/so/so-logo.png?v=9c558ec15d8a");

    BackgroundSize bSize = new BackgroundSize(BackgroundSize.AUTO, BackgroundSize.AUTO, false, false, true, false);

    Background background2 = new Background(new BackgroundImage(image2,
            BackgroundRepeat.NO_REPEAT,
            BackgroundRepeat.NO_REPEAT,
            BackgroundPosition.CENTER,
            bSize));

    borderPane.setBackground(new Background(new BackgroundImage(image1,
            BackgroundRepeat.NO_REPEAT,
            BackgroundRepeat.NO_REPEAT,
            BackgroundPosition.CENTER,
            bSize)));

    Button btn = new Button("Change Background");
    btn.setOnAction((ActionEvent event) -> {
        borderPane.setBackground(background2);
    });

    borderPane.setCenter(btn);

    Scene scene = new Scene(borderPane, 600, 400);

    primaryStage.setScene(scene);
    primaryStage.show();
}