在JavaFX中动态切换场景

Question

我想在2个不同的场景之间切换：

问题是当我从场景2切换到场景1时，场景1中加载的所有图像都不在那里（这很明显，因为我正在创建一个新场景，而不是“加载”场景1。

当我从场景2切换到场景1时，有什么方法可以保留已经加载的图像吗？

场景1

public class ControllerImpl implements Initializable, ControlledScreen {
ScreensController myController;
public void initialize(URL url, ResourceBundle rb) {
}
public void setScreenParent(ScreensController screenParent){
    myController = screenParent;
}
@FXML
private void goToScreen2(ActionEvent event) throws Exception{
    try {
        Stage primaryStage = (Stage) hideStage.getScene().getWindow();
        FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("/arrow.fxml"));
        Parent root1 = fxmlLoader.load();
    primaryStage.setScene(new Scene(root));
    }
    catch (Exception e) {
        e.printStackTrace();
    }
}
@FXML
public javafx.scene.control.Button hideStage;

public class ControllerArrow implements Initializable{

ScreensController myController;

@Override
public void initialize(URL url, ResourceBundle rb) {
}

public void setScreenParent(ScreensController screenParent){
    myController = screenParent;
}

@FXML
public javafx.scene.control.Button showStage;

@FXML
private void goToScreen1(ActionEvent event) throws Exception{

    try{

        Stage stage = (Stage) showStage.getScene().getWindow();

        FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("/sample.fxml"));
        Parent root = fxmlLoader.load();

    }
    catch (Exception e) {
        e.printStackTrace();
    }
}

Answer 1

您可以切换您的舞台场景，如：

Stage stage = (Stage) scene.getWindow();
stage.setScene(yourScene);

所以当你有一个场景的实例时，你可以将它应用到你的舞台上