JavaFX类控制器场景参考 [英] JavaFX class controller scene reference
问题描述
有没有办法从关联的类控制器获取FXML加载文件的Scene对象。
Is there any way of getting the Scene object of an FXML loaded file from the associated class controller.
我正在做这样的事情：
@FXML
private AnchorPane anchor;
Scene scene = anchor.getScene();
但是我想要一个不引用AnchorPane控件的解决方案。
but i'd like a solution that does not reference the AnchorPane control.
推荐答案
为什么不呢？控制器是一个抽象类，除非你故意让他知道，否则他不会知道UI。
Why not? Controller is an abstract class, he's not aware about UI unless you deliberately make him know.
节点（包括AnchorPane）是另一个故事，它们几乎不存在于场景图之外。因此，向Node询问他的父母或场景是完全没问题的。
Nodes (inlcuding AnchorPane) are another story, they hardly exists outside for scenegraph. So it's perfectly fine to ask Node about his parent or scene.
如果您仍想单独处理，则有下一种方法：
If you still want to handle that separately there are next approaches:
-
您可以创建自定义控制器并在加载后设置场景。请注意，当时
initialize（）被称为尚未初始化。
public class MyController {
private void Scene scene;
public void setScene(Scene scene) { this.scene = scene; }
}
// loading code
FXMLLoader fxmlLoader = new FXMLLoader();
AnchorPane root = (AnchorPane) fxmlLoader.load(getClass().getResource("MyApp.fxml"));
MyController myController = (MyController) fxmlLoader.getController();
myController.setScene(scene);
您可以创建一个自定义fxml控件，它将包含控制器，他只需调用 getScene（）为自己。请在此处查看示例： https://stackoverflow.com/a/10718683/1054140
You can create a custom fxml control which will incorporate controller and he can just call getScene() for itself. See an example here: https://stackoverflow.com/a/10718683/1054140
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