JavaFX显示场景背景图像 [英] JavaFX display scene background image

问题描述

我正在使用Java SDK1.7.0_45中的内置FX库在Eclipse Kepler上开发JavaFX应用程序。我想在场景中显示背景图像。按照Java文档中提供的教程，以下代码应该可以工作：

  public class Main extends Application {
 public static void main（String [] args）{
 Application.launch（args）; 
} 
 
 @Override 
 public void start（Stage primaryStage）{
 GridPane grid = new GridPane（）; 
场景场景=新场景（网格，300,275）; 
 primaryStage.setScene（scene）; 
 scene.getStylesheets（）。add（Main.class.getResource（Login.css）。toExternalForm（））; 
 primaryStage.show（）; 
} 
  

}

我的CSV文件如下所示：

  .root {
 -fx-background-image：url（background。 JPG）; 
  

}

但我得到的是而是空白屏幕。我在src / application文件夹中有3个文件：background.jpg，Main.java和Login.css。

我尝试添加反斜杠，将图像放入单独的文件夹，提供绝对路径，提供几种类型的图像，使用../application/background.jpg，将代码更改为file：background.jpg，使用imageview直接将URL提供给代码并解除CSS文件相反，.....但没有任何作用。

我看了几个其他stackoverflow链接，似乎都失败了：

'ul>

的JavaFX如何设置场景背景图像（呈现空白屏幕）

通过javafx代码设置背景图像（不是css）异常）

无法在JavaFX中加载图像

等等。

奇怪的是，当我从服务器提供图像作为超链接时，一切正常。提供本地文件的路径永远不会工作。我究竟做错了什么？有人可以告诉我如何显示本地图像吗？这是一个错误？

解决方案

部分由于从WillBD答案，我决定放弃Eclipse的开普勒和Netbeans的一切重新开始。我使用了我在问题中提供的完全相同的代码，现在一切正常。我想这是JavaFX和Eclipse Kepler之间的一个错误。

I’m developing a JavaFX application on Eclipse Kepler using the built-in FX library from Java SDK1.7.0_45. I want to display a background image in a scene. Following the tutorial provided in the Java documentation, following code should work:

public class Main extends Application {
    public static void main(String[] args) {
    Application.launch(args);
    }

    @Override
    public void start(Stage primaryStage) {
    GridPane grid = new GridPane();
    Scene scene = new Scene(grid, 300, 275);
    primaryStage.setScene(scene);
    scene.getStylesheets().add(Main.class.getResource("Login.css").toExternalForm());
    primaryStage.show();
    }

}

My CSV file looks like this:

.root {
 -fx-background-image: url("background.jpg");

}

But I just get a blank screen instead. I have 3 files in the src/application folder: background.jpg, Main.java and Login.css.

I have tried adding a backslash, putting the image into a separate folder, providing an absolute path, providing several types of images, using ../application/background.jpg, changing the code to file:background.jpg, providing the URL directly into the code and dismissing the CSS file, using an imageview instead, ..... but nothing works.

I've taken a look at several other stackoverflow links, all seemed to fail:

• JavaFX How to set scene background image (renders a blank screen)
• Setting background image by javafx code (not css) exception)
• Cannot load image in JavaFX
• and many more.

The strange thing is, when I supply an image from a server as a hyperlink, everything works fine. Supplying the path to a local file never works though. What am I doing wrong? Can somebody show me how to display a local image? Is this a bug?

解决方案

Partly thanks to the answer from WillBD, I decided to ditch Eclipse Kepler and start all over in Netbeans. I used the exact same code I provided in my question and now everything works just fine. I guess this is a bug between JavaFX and Eclipse Kepler.

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