LocalService.java

import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;

public abstract class LocalService<T> extends Service {

    @Override
    public IBinder onBind(Intent intent) {
        return new LocalServiceBinder();
    }

    public class LocalServiceBinder extends Binder {
        public T getService() {
            return (T) LocalService.this;
        }
    }

}