@Override
  public void checkFavoritesAndSetIcon(int articleId) {
    Repository.FavoritesRepository favoritesRepository = SQLiteFavoritesRepository.getInstance();

    Observable.fromCallable(() -> favoritesRepository.isInFavorites(articleId))
        .subscribeOn(Schedulers.newThread())
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe(result -> view.setFavoritesButton(result));
  }
 @Override
 public void toggleFavorite(boolean currentState, ArticleData articleData) {
   Repository.FavoritesRepository favoritesRepository = SQLiteFavoritesRepository.getInstance();
   if (currentState) {
     view.setFavoritesButton(false);
     favoritesRepository.removeFavorite(articleData.getId());
   } else {
     view.setFavoritesButton(true);
     favoritesRepository.addFavorite(articleData);
   }
 }