JavaFX通過Controller類實現第二窗口銷燬和程序退出

Preface

Q：爲什麼有此文？
A:

• 不能高度自定義化
• 網上大部分文章是通過簡易的warning窗口 或者 information窗口實現的，且過於繁瑣
• 大部分放在了Main.java，不好弄

原理

Controller類中關鍵性代碼：（具體代碼見附）

//銷燬當前窗口的代碼
//exitButton是第二窗口的退出按鈕
public void exitButtonOnMouseClicked() {
    //通過stage方式操作窗口，因爲一個新的窗口就是一個新的stage
    Stage stage = (Stage)exitButton.getScene().getWindow();
    stage.close();
}
//平臺退出的代碼
//platformExitButton是第二窗口的退出按鈕
public void platformExitButtonOnMouseClicked() {
    //其實，此處也可像上面操作stage一樣
    Platform.exit();
}

實現效果

窗口銷燬效果

應用程序退出效果

附

Main.java

package sample;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class Main extends Application {

    @Override
    public void start(Stage primaryStage) throws Exception{
        Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
        primaryStage.setTitle("Hello World");
        primaryStage.setScene(new Scene(root, 498, 320));
        primaryStage.show();
    }


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

Controller.java

package sample;

import javafx.application.Platform;
import javafx.fxml.FXML;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.AnchorPane;
import javafx.stage.Stage;

public class Controller {
    @FXML
    private Button okButton;//未用到

    @FXML
    private  Button platformExitButton;

    @FXML
    private Button exitButton;

    public void okButtonOnMouseClicked() {
        //此處是爲了加載新的窗口，具體請見：http://blog.csdn.net/qq_20336817/article/details/79079296
        System.out.println("fuck me!");

        try {
            AnchorPane page = FXMLLoader.load(getClass().getResource("dialog.fxml"));
            Scene newScene = new Scene(page);
            Stage stage = new Stage();
            stage.setTitle("dialog window");
            stage.setScene(newScene);
            stage.show();
        }catch (Exception e){
            e.printStackTrace();
        }
    }

    //銷燬當前窗口的代碼
    //exitButton是第二窗口的退出按鈕
    public void exitButtonOnMouseClicked() {
        Stage stage = (Stage)exitButton.getScene().getWindow();
        stage.close();
    }
    //平臺退出的代碼
    //platformExitButton是第二窗口的退出按鈕
    public void platformExitButtonOnMouseClicked() {
        Platform.exit();
    }
}

sample.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.ColumnConstraints?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.layout.RowConstraints?>
<?import javafx.scene.text.Font?>

<GridPane alignment="center" hgap="10" vgap="10" xmlns="http://javafx.com/javafx/9" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller">
   <columnConstraints>
      <ColumnConstraints />
   </columnConstraints>
   <rowConstraints>
      <RowConstraints />
   </rowConstraints>
   <children>
      <AnchorPane prefHeight="320.0" prefWidth="498.0">
         <children>
            <Button fx:id="okButton" layoutX="232.0" layoutY="203.0" mnemonicParsing="false" onMouseClicked="#okButtonOnMouseClicked" text="Emmm">
               <font>
                  <Font size="17.0" />
               </font>
            </Button>
            <Label layoutX="150.0" layoutY="100.0" text="Fuck Me">
               <font>
                  <Font size="21.0" />
               </font>
            </Label>
            <Button fx:id="platformExitButton" layoutX="210.0" layoutY="259.0" mnemonicParsing="false" onMouseClicked="#platformExitButtonOnMouseClicked" text="Platform Exit">
               <font>
                  <Font size="17.0" />
               </font>
            </Button>
         </children>
      </AnchorPane>
   </children>
</GridPane>

dialog.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.text.Font?>

<AnchorPane prefHeight="245.0" prefWidth="314.0" xmlns="http://javafx.com/javafx/9" xmlns:fx="http://javafx.com/fxml/1" fx:controller="sample.Controller">
   <children>
      <Label layoutX="57.0" layoutY="51.0" text="I'm a dialog">
         <font>
            <Font size="29.0" />
         </font>
      </Label>
      <Button fx:id="exitButton" layoutX="174.0" layoutY="181.0" mnemonicParsing="false" onMouseClicked="#exitButtonOnMouseClicked" text="Exit">
         <font>
            <Font size="14.0" />
         </font>
      </Button>
   </children>
</AnchorPane>