Development and remote installation of Java service for Android Devices

package com.mycompany;

import java.util.Calendar;
import java.util.Timer;

import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.Handler;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;

public class NotifyService extends Service 
{
	private final static String LOG_TAG = "NotifyService";
	
	private Handler handler = new Handler();
	private NotificationRunnable notificator = new NotificationRunnable();
	private NotifyServiceBinder binder = null;
	private NotifyTask task = null;
	private Timer timer = null;
	
    @Override
    public void onCreate() 
    {
        super.onCreate();
        Log.d(LOG_TAG, "Creating service");
        showNotification("Creating NotifyService");
        
        binder = new NotifyServiceBinder(handler, notificator);
        task = new NotifyTask(handler, notificator);
        timer = new Timer();
    }
    
    @Override
    public void onStart(Intent intent, int startId)
    {
    	super.onStart(intent, startId);
    	Log.d(LOG_TAG, "Starting service");
    	showNotification("Starting NotifyService");
    	
        timer.scheduleAtFixedRate(task, Calendar.getInstance().getTime(), 30000);
    }
    
    @Override
    public void onDestroy()
    {
    	super.onDestroy();
    	Log.d(LOG_TAG, "Stopping service");
    	showNotification("Stopping NotifyService");
    	
    	timer.cancel();
    }
	
	@Override
	public IBinder onBind(Intent intent) 
	{
		Log.d(LOG_TAG, "Binding service");
		return binder;
	}
	
    public void showNotification(String message) 
    {
        Toast.makeText(this, message, Toast.LENGTH_LONG).show();
    }
    
    public class NotificationRunnable implements Runnable 
    {
        private String message = null;
        
        public void run() 
        {
            if (null != message) 
            {
                showNotification(message);
            }
        }
        
        public void setMessage(String message) 
        {
            this.message = message;
        }
    }  
    
    public class NotifyServiceBinder extends Binder implements INotifyService 
    {
    	private Handler handler = null;
    	private NotificationRunnable notificator = null;    	
    	
    	public NotifyServiceBinder(Handler handler, NotificationRunnable notificator)
    	{
    		this.handler = handler;
    		this.notificator = notificator;
    	}
    	
    	public void sendNotification(String message)
    	{
    		if (null != notificator)
    		{
        		notificator.setMessage(message);
                handler.post(notificator);
    		}
    	}

		@Override
		public IBinder asBinder() 
		{
			return this;
		}
    }
}