JavaFX + Scene Builder如何切换场景 [英] JavaFX + Scene Builder how switch scene

问题描述

我正在使用JavaFx和Scenebuilder，并希望在eclipse中为自己创建一个名为Taskplanner的本地应用程序。

I'm working with JavaFx and Scenebuilder and want create a local app for myself called "Taskplanner" in eclipse.

我创建了一个新的舞台并设置了它场景（参见Main.java）。但不确定如何在旧阶段设置新场景（请参阅Controller.java）。 Didnt还没有发现是否可以通过signInButtonClicked（） - MethodeStage primaryStage而不是Scene Builder

I created a new Stage and set it with a Scene (see Main.java). But not sure how to set a new Scene in the old stage (see Controller.java). Didnt also not find out if it is possible pass the signInButtonClicked()-Methode the "Stage primaryStage" over Scene Builder

有人可以帮忙吗？

Controller.java：

@FXML
Button btnSignIn;

@FXML
public void signInButtonClicked() throws Exception
{
//Here I want call the new Scene(SignInGUI.fxml) in my old Stage
   FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("../view/SignInGUI.fxml"));
}

Main.java：

        @Override
        public void start(Stage primaryStage) throws Exception 
      {
            Parent root = FXMLLoader.load(getClass().getResource("../view/LoginGUI.fxml"));

            primaryStage.setTitle("Taskplanner");
            primaryStage.setScene(new Scene(root,500,500));
            primaryStage.show();
        }


        public static void main(String[] args) {

            launch(args);
    }

推荐答案

您可以参考您的按钮引用中的场景和窗口。从那里，由您来决定如何显示新视图。

You can get a reference to the Scene and Window from your button reference. From there, it's up to you to decide how to you want to show the new view.

以下是您获取这些参考的方式：

Here's how you get those references:

Scene scene = btnSignIn.getScene();
Window window = scene.getWindow();
Stage stage = (Stage) window;

您可以通过更改场景的根来更改视图：

You can change the view by changing the root of your Scene:

FXMLLoader loader = ... // create and load() view
btnSignIn.getScene().setRoot(loader.getRoot());

或者你可以改变整个场景：

Or you can change the entire Scene:

FXMLLoader loader = ... // create and load() view
Stage stage = (Stage) btnSignIn.getScene().getWindow();
Scene scene = new Scene(loader.getRoot());
stage.setScene(scene);

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