JavaFX窗口未打开



如果我运行Main class,我的JavaFX不会打开。一个Java符号出现在我的菜单栏中,但没有显示任何窗口。控制台上没有任何错误。我在Mac机器上,我正在使用eclipse,以及e(fx(clipes和Gloon场景生成器。代码实际上是从教程中写下来的1乘1。在本教程中,运行配置JRE设置为JavaSE-1.8。-但是,我测试了所有可用的JRE,但没有成功。我需要调整什么?

主要类别:

package application;
import java.io.IOException;
import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.AnchorPane;

public class Main extends Application {
private Stage primaryStage; 

@Override
public void start(Stage primaryStage) {
this.primaryStage = primaryStage; 
}
public void mainWindow() {
try {
FXMLLoader loader = new FXMLLoader(Main.class.getResource("MainWindow.fxml"));  
AnchorPane pane = loader.load();

primaryStage.setMinHeight(400.00);
primaryStage.setMinWidth(500.00);

MainWindowController mainWindowController = loader.getController();
mainWindowController.setMain(this);

Scene scene = new Scene(pane);

primaryStage.setScene(scene);
primaryStage.show();

} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void main(String[] args) {
launch(args);
}
}

控制器类别:

package application;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
public class MainWindowController {
public Main main;
@FXML private Label label;
@FXML private TextField field;
@FXML private Button clear;
@FXML private Button changeText;

public void setMain(Main main) {
// TODO Auto-generated method stub
this.main = main;
}
@FXML
public void handleChangeText() {
String text = field.getText();
label.setText(text);

}

@FXML
public void handleClear() {
field.clear();
}
}

FXML文件:

<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.HBox?>
<?import javafx.scene.layout.VBox?>
<?import javafx.scene.text.Font?>
<AnchorPane prefHeight="400.0" prefWidth="500.0" xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.MainWindowController">
<children>
<VBox alignment="CENTER" layoutY="83.0" spacing="30.0" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<children>
<Label fx:id="label" text="Label">
<font>
<Font size="24.0" />
</font></Label>
<HBox alignment="CENTER">
<children>
<TextField fx:id="field" prefWidth="220.0" />
</children>
</HBox>
<HBox alignment="CENTER" spacing="20.0">
<children>
<Button fx:id="changeText" mnemonicParsing="false" onAction="#handleChangeText" text="Change Text" />
<Button fx:id="clear" mnemonicParsing="false" onAction="#handleClear" text="Clear" />
</children>
</HBox>
</children>
</VBox>
</children>
</AnchorPane>

您在启动方法中没有执行任何操作。您所做的只是设置primaryStage变量,之后应该调用mainWindow方法。

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