Question

请查看代码段：

import java.io. *;
* import java.sql.;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.image.Image;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.ResourceBundle;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.event.ActionEvent;
import javafx.event.Event;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.PasswordField;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.control.ToggleButton;
javafx.animation import *.;
import javafx.animation.PathTransition.OrientationType;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.animation.Timeline;
import javafx.animation.TranslateTransition;
import javafx.animation.TranslateTransitionBuilder;
import static javafx.application.Application.launch;
import javafx.event.EventHandler;
import javafx.scene.Cursor;
import javafx.scene.Group;
import javafx.scene.control.MenuItem;
import javafx.scene.control.Tab;
import javafx.scene.control.TabPane;
import javafx.scene.control.Tooltip;
import javafx.scene.input.KeyEvent;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.AnchorPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.CubicCurveTo;
import javafx.scene.shape.MoveTo;
import javafx.scene.shape.Path;
import javafx.scene.shape.PathBuilder;
import javafx.scene.shape.Rectangle;
import javafx.stage.Modality;
import javafx.stage.StageStyle;
import javafx.stage.WindowEvent;
import javafx.util.Duration;
public class Book extends Application implements Initializable
{

@ Override
    public void start (Stage primaryStage) throws IOException
    {

        Stage stage = primaryStage;

        Parent root = FXMLLoader.load (getClass () getResource ("Buch.fxml").);

        Scene scene = new Scene (root);

        stage.setTitle ("book");
        stage.setScene (scene);
        . stage.getIcons () add (new Image ("icon.png"));
        / / Stage.setFullScreen (true) / / Works
        stage.show ();



    }

    @ FXML
    public void fullscreen (ActionEvent event)
    {

        / / Stage.setFullScreen (true) / / Does not work
        / / Can not find symbol (stage)

    }

如果我不使用FXML，那么它可以工作（:-D）：

import java.io. *;
* import java.sql.;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.image.Image;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.ResourceBundle;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.event.ActionEvent;
import javafx.event.Event;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.PasswordField;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.control.ToggleButton;
javafx.animation import *.;
import javafx.animation.PathTransition.OrientationType;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.animation.Timeline;
import javafx.animation.TranslateTransition;
import javafx.animation.TranslateTransitionBuilder;
import static javafx.application.Application.launch;
import javafx.event.EventHandler;
import javafx.scene.Cursor;
import javafx.scene.Group;
import javafx.scene.control.MenuItem;
import javafx.scene.control.Tab;
import javafx.scene.control.TabPane;
import javafx.scene.control.Tooltip;
import javafx.scene.input.KeyEvent;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.AnchorPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.CubicCurveTo;
import javafx.scene.shape.MoveTo;
import javafx.scene.shape.Path;
import javafx.scene.shape.PathBuilder;
import javafx.scene.shape.Rectangle;
import javafx.stage.Modality;
import javafx.stage.StageStyle;
import javafx.stage.WindowEvent;
import javafx.util.Duration;
public class Book extends Application implements Initializable
{

@ Override
    public void start (Stage primaryStage) throws IOException
    {

        Stage stage = primaryStage;

        Parent root = FXMLLoader.load (getClass () getResource ("Buch.fxml").);

        Scene scene = new Scene (root);

        stage.setTitle ("book");
        stage.setScene (scene);
        . stage.getIcons () add (new Image ("icon.png"));
        stage.show ();

        btn.setOnAction (new EventHandler <ActionEvent> ()
        {
            public void handle (ActionEvent evt)
            {
                stage.setFullScreen (true);
            }

        });

    }

此解决方案的原因是该按钮的事件处理程序现在位于start方法中。

在start方法中使用的@ FXML注释不起作用（当然）：

public class Book extends Application implements Initializable
{

@ Override
    public void start (Stage primaryStage) throws IOException
    {

        Stage stage = primaryStage;

        Parent root = FXMLLoader.load (getClass () getResource ("Buch.fxml").);

        Scene scene = new Scene (root);

        stage.setTitle ("book");
        stage.setScene (scene);
        . stage.getIcons () add (new Image ("icon.png"));
        stage.show ();

* /
       @ FXML
    public void fullscreen (ActionEvent event)
    {

        stage.setFullScreen (true) / / Does not work
        / / Can not find symbol (stage)

    }
/ * / / Will not work


    }

我的问题是：我如何在任何地方使用舞台变量？还是有其他解决方案吗？ JavaFX很酷，但遗憾的是没有一个好的IDE（使用GUI设计器）。您可以忘记并使用FXML的JavaFX Scene Builder很傻！ :-( 但是，我不知道JavaFX Scene Builder的替代方法。没有创建GUI设计器的GUI对于大型程序来说是愚蠢的： - （。

请帮帮我。

在互联网上，我的问题没有答案，这令我感到惊讶。（既不是德语也不是英语教程）

抱歉我的英语不好。我学习语言:-)。而且我也是Java初学者： - ）。

我希望我没有忘记任何事情：-D。

谢谢： - ）

Answer 1

在类中声明一个静态Stage变量，并将primaryStage分配给它。

public class Book extends Application implements Initializable
{
    public static Stage stage;
    @ Override
    public void start (Stage primaryStage) throws IOException
    {
        stage = primaryStage;
        ...
    }
    ...
    @ FXML
    public void fullscreen (ActionEvent event)
    {
        stage.setFullScreen(true);
    }
}

使用FXML在JavaFX下全屏不起作用

1 个答案: