【注意事項】javafx_popwindow_multitask

//弹窗dialogPane
//更好的Dialog
import javafx.application.Application;
import javafx.concurrent.ScheduledService;
import javafx.concurrent.Task;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.image.ImageView;
import javafx.scene.layout.AnchorPane;
import javafx.scene.text.Text;
import javafx.stage.Modality;
import javafx.stage.Stage;
import javafx.util.Duration;


public class Main extends Application {
    
    
    public static void main(String[] args) {
    
    
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
    
    
        Button button = new Button("点击显示窗口");
        AnchorPane an = new AnchorPane();
        an.setStyle("-fx-background-color:#00CED1");
        an.getChildren().addAll(button);
        AnchorPane.setTopAnchor(button,100.0);
        AnchorPane.setLeftAnchor(button,100.0);
//        an.setPadding(new Insets(100));
//        button.setOnAction(action -> System.out.println(button.getText()));
        button.setOnAction(new EventHandler<ActionEvent>() {
    
    
            @Override
            public void handle(ActionEvent event) {
    
    
                DialogPane dialogPane = new DialogPane();
                //新窗口
                Stage stage = new Stage();

                Scene sc = new Scene(dialogPane);
                stage.setScene(sc);
                //标题文字
                dialogPane.setHeaderText("从一到十");
                //内容文字
                dialogPane.setContentText("内容文字");

                ImageView imageView = new ImageView("icon/icon.png");
                dialogPane.setGraphic(imageView);
                dialogPane.setStyle("-fx-background-color:#7CCD7C");

                //扩展内容
                dialogPane.setExpandableContent(new Text("扩展的内容"));
                //添加组件
                dialogPane.getButtonTypes().add(ButtonType.APPLY);
                dialogPane.getButtonTypes().add(ButtonType.CLOSE);
                Button apply = (Button)dialogPane.lookupButton(ButtonType.APPLY);
                Button close = (Button)dialogPane.lookupButton(ButtonType.CLOSE);

                apply.setOnAction(new EventHandler<ActionEvent>() {
    
    
                    @Override
                    public void handle(ActionEvent event) {
    
    
                        System.out.println(apply.getText());
                    }
                });
                close.setOnAction(new EventHandler<ActionEvent>() {
    
    
                    @Override
                    public void handle(ActionEvent event) {
    
    
                        System.out.println(close.getText());
                    }
                });
                //不允许改变大小
                stage.setResizable(false);


                stage.setTitle("这是弹出的窗口");
                stage.initOwner(primaryStage);
//                stage.initStyle(StageStyle.UTILITY);//去掉装饰UNDECORATED
                stage.initModality(Modality.WINDOW_MODAL);//模态化
                stage.show();

                myScheduledService my = new myScheduledService(dialogPane,stage);
                my.setDelay(Duration.seconds(0));
                my.setPeriod(Duration.seconds(1));
                my.start();
            }
        });
        Scene scene = new Scene(an);
        primaryStage.setScene(scene);
        primaryStage.setTitle("JavaFX");
        primaryStage.setWidth(500);
        primaryStage.setHeight(500);
        primaryStage.show();
    }
}

class myScheduledService extends ScheduledService<Integer>{
    
    
    int i = 0;
    private DialogPane dialogPane = null;
    private Stage stage = null;

    myScheduledService(DialogPane dialogPane, Stage stage){
    
    
        this.dialogPane = dialogPane;
        this.stage = stage;
    }
    @Override
    protected Task<Integer> createTask() {
    
    
        return new Task<Integer>() {
    
    
            @Override
            protected Integer call() throws Exception {
    
    
                return i = i + 1;
            }

            @Override
            protected void updateValue(Integer value) {
    
    
                if(value <= 10){
    
    
                    myScheduledService.this.dialogPane.setContentText(String.valueOf(value));
                }
                else{
    
    
                    stage.close();
                    myScheduledService.this.cancel();
                    System.out.println("!");
                }
            }
        };
    }
}

参照：https：//space.bilibili.com/5096022/video？tid = 36＆page = 8＆keyword =＆order = pubdate