在JavaFX中更改场景而不调整窗口大小 [英] Change Scene without resize window in JavaFX

问题描述

我正在尝试更改JavaFX上的场景，但不更改窗口大小。但是，当我设置 stage.setScene（scene2）; 窗口大小减小时，我想保持两个场景最大化。我在 stage.setScene（scene2）; 之后尝试 stage.setMaximized（true），但结果是相同。

I'm trying to change Scenes on JavaFX, but without change the window size. However, when I set stage.setScene(scene2); the window size decreases, and I want to keep the both Scenes maximized. I've tried to stage.setMaximized(true) after the stage.setScene(scene2); but the result is the same.

如何解决？

我的代码：

package controller;

import java.io.IOException;

import javafx.animation.FadeTransition;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.util.Duration;

public class App extends Application {  
    @Override
    public void start(Stage stage) throws Exception {
        Parent root = FXMLLoader.load(getClass().getResource("../view/fxml/Loading.fxml"));

        Scene scene = new Scene(root);

        stage.setScene(scene);
        stage.setTitle("Project");
        stage.setMaximized(true);
        stage.show();

        FadeTransition fadeIn = new FadeTransition(Duration.seconds(1), root);
        fadeIn.setFromValue(0);
        fadeIn.setToValue(1);

        FadeTransition fadeOut = new FadeTransition(Duration.seconds(1), root);
        fadeOut.setFromValue(1);
        fadeOut.setToValue(0);

        fadeIn.play();

        fadeIn.setOnFinished((e) -> {
            fadeOut.play();
        });

        fadeOut.setOnFinished((e) -> {
            try {               
                Parent root2 = FXMLLoader.load(getClass().getResource("../view/fxml/Welcome.fxml"));

                Scene scene2 = new Scene(root2);

                stage.setScene(scene2);
            } catch (IOException e1) {
                e1.printStackTrace();
            }
        });
    }

    public static void main(String[] args) {
        launch(args);
    }
}

编译时：

When I compile:

然后fadeOut / fadeIn出现并且（这里我想保持最大化）：

Then the fadeOut/fadeIn occurs and (It is here that I want to keep maximized):

推荐答案

这里更好的方法是更换现有场景的根，而不是创建一个新场景：

It's probably better here just to replace the root of the existing scene, than to create a new scene:

fadeOut.setOnFinished((e) -> {
    try {               
        Parent root2 = FXMLLoader.load(getClass().getResource("../view/fxml/Welcome.fxml"));

        scene.setRoot(root2);

    } catch (IOException e1) {
        e1.printStackTrace();
    }
});

如果你真的需要更换场景，出于某种原因，你可以设置新场景的大小与现有场景相同：

If you really do need to replace the scene, for some reason, you can set the new scene's size to the same as the existing scene:

fadeOut.setOnFinished((e) -> {
    try {               
        Parent root2 = FXMLLoader.load(getClass().getResource("../view/fxml/Welcome.fxml"));

        Scene scene2 = new Scene(root2, scene.getWidth(), scene.getHeight());

        stage.setScene(scene2);
    } catch (IOException e1) {
        e1.printStackTrace();
    }
});

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