B4J Code Snippet Icon System Tray Example (Inline Java version)

from: https://gist.github.com/jewelsea

Sub Process_Globals
    Private MainForm As Form
    Private ps As JavaObject
End Sub

Sub AppStart (Form1 As Form, Args() As String)
    MainForm = Form1
    MainForm.RootPane.LoadLayout("Layout1")
 
    Dim JavaFXTrayIconSample As JavaObject
    JavaFXTrayIconSample.InitializeNewInstance(getPackageName & ".main$SystemTrayExample", Array(Null))
End Sub
Private Sub getPackageName() As String
    Dim joBA As JavaObject
    joBA.InitializeStatic("anywheresoftware.b4a.BA")
    Log("Packagename: " & joBA.GetField("packageName"))
    Return joBA.GetField("packageName")
End Sub
#if JAVA
import javafx.application.Platform;
import javafx.scene.control.Label;
import javafx.scene.layout.StackPane;
import javafx.scene.Scene;
import javafx.stage.Stage;
import javafx.stage.StageStyle;

import javax.imageio.ImageIO;
import java.awt.*;
import java.io.IOException;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;

public class SystemTrayExample {

    private static final String iconImageLoc = "https://icons.iconarchive.com/icons/scafer31000/bubble-circle-3/16/GameCenter-icon.png";
    private Timer notificationTimer = new Timer();
    private SimpleDateFormat timeFormat = new SimpleDateFormat("HH:mm:ss");
    private Stage stage;

    public SystemTrayExample() { 
        javax.swing.SwingUtilities.invokeLater(this::addAppToTray);
    }

    private void addAppToTray() {
        try {
            if (!SystemTray.isSupported()) {
                System.out.println("No system tray support, exiting.");
                return;
            }

            SystemTray tray = SystemTray.getSystemTray();
            URL imageLoc = new URL(iconImageLoc);
            Image image = ImageIO.read(imageLoc);
            TrayIcon trayIcon = new TrayIcon(image, "B4J Tray App");

            // Double-click opens the app
            trayIcon.addActionListener(event -> Platform.runLater(this::showStage));

            // Menu options
            PopupMenu popup = new PopupMenu();
            MenuItem openItem = new MenuItem("Open");
            openItem.addActionListener(event -> Platform.runLater(this::showStage));
            popup.add(openItem);
           
           
            MenuItem abItem = new MenuItem("About");
                    abItem.addActionListener(event -> {
                        BA.Log("B4J Tray App");
                    });
            popup.add(abItem);

            MenuItem exitItem = new MenuItem("Exit");
            exitItem.addActionListener(event -> {
                notificationTimer.cancel();
                Platform.exit();
                tray.remove(trayIcon);
            });
            popup.add(exitItem);

            trayIcon.setPopupMenu(popup);
            tray.add(trayIcon);

            // Show notifications periodically
            notificationTimer.schedule(new TimerTask() {
                @Override
                public void run() {
                    trayIcon.displayMessage("Reminder", "Current time: " + timeFormat.format(new Date()), TrayIcon.MessageType.INFO);
                }
            }, 5000, 60000);

        } catch (AWTException | IOException e) {
            e.printStackTrace();
        }
    }

    private void showStage() {
        if (stage == null) {
            stage = new Stage();
            stage.initStyle(StageStyle.UTILITY);
            Label label = new Label("Hello from System Tray!");
            StackPane root = new StackPane(label);
            Scene scene = new Scene(root, 300, 200);
            stage.setScene(scene);
        }
        stage.show();
        stage.toFront();
    }
}

#End If

View attachment 162564