ServiceHelper

package com.example.persons.service;

import android.content.Context;
import android.content.Intent;
import android.os.ResultReceiver;

public class PersonServiceHelper {

    private static PersonServiceHelper _instance = null;

    private PersonServiceHelper () {
    }

    private synchronized static void createInstance () {
        if ( _instance == null )
            _instance = new PersonServiceHelper ();
    }

    public static PersonServiceHelper getInstance () {
        if ( _instance == null )
            createInstance ();
        return _instance;
    }

    public void getPersons ( Context context, ResultReceiver receiver ) {
        final Intent intent = new Intent ( Intent.ACTION_SYNC, null, context, PersonService.class );
        intent.putExtra ( PersonService.EXTRA_STATUS, receiver );
        intent.putExtra ( PersonService.EXTRA_REST_OPERATION, PersonService.GENERAL_REST_OPERATION );
        context.startService ( intent );
    }
}