JavaFX Frozen GUI在流程面板上添加Button时 [英] JavaFX Frozen GUI When adding Button on flow panel

问题描述

如何在JAVA FX

How to add 5000 buttons or labels to flow panel without freezing GUI in JAVA FX Just like this

Why I even need so many buttons well, I don't need that many but at least 500 - 1000. Coz I'm building an application Fonticon Tool

Slow is fine but not Freezing It's ok if the application is slow and take a couple of seconds to show all button But I don't want it to freeze progress bar and GUI

How it works I have an SQLite database with a couple of tables, each table has a list of values. An object gives me ArrayList values

What I'm looking for I'm looking for something like.

FlowPane fp = new FlowPane(); 

for(String fonticon_code : DatabaseTable.getlist()) //getlist() returns an array list of Strings
{
  fp.getChildren.add(new button().setGraphic(new FontIcon(fonticon_code)));

}

I also wanna be able to stop and restart Thread

What I tired I tried Thread, Task, Platform.runLater(update); but I'm not sure that I use them correctly

解决方案

Here an MCVE using ControlsFX GridView.

import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.StackPane;
import javafx.scene.text.Font;
import javafx.stage.Stage;
import org.controlsfx.control.GridCell;
import org.controlsfx.control.GridView;

/**
 *
 * @author blj0011
 */
public class JavaFXApplication287 extends Application
{

    @Override
    public void start(Stage primaryStage)
    {
        ObservableList observableList = FXCollections.observableArrayList(Font.getFamilies());
        GridView<String> myGrid = new GridView(observableList);
        myGrid.setHorizontalCellSpacing(0);
        myGrid.setVerticalCellSpacing(0);
        myGrid.setCellFactory(gridView -> {
            return new GridCell<String>()
            {
                Button button = new Button("ABC");

                {
                    button.setPrefWidth(60);
                    button.setPrefHeight(60);
                }

                @Override
                public void updateItem(String item, boolean empty)
                {
                    if (empty || item == null) {
                        setText(null);
                        setGraphic(null);
                    }
                    else {
                        button.setFont(new Font(item, 14));
                        setGraphic(button);
                    }

                }
            };
        });

        StackPane root = new StackPane(myGrid);
        Scene scene = new Scene(root, 500, 700);

        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)
    {
        launch(args);
    }

}

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