在ViewHolder外的适配器中的方法中使用数据绑定更改所选项目的背景

Question

我有一个使用数据绑定的适配器。我从下面的片段中调用下面的代码中的方法moveTagToTop(int hashTagId)来交换项目，然后我想更改未发生的特定项目的背景颜色。我的适配器中有2个View Holder，在完成HashTagViewHolder方法中我想做的事情后，我想访问moveTagToTop并更改视图持有人中约束布局的背景颜色，使用数据绑定。请帮助我。

public class HashtagAdapter extends HashTagBaseAdapter {


public static final int ITEM_HASHTAG = 0;

public static final int ITEM_TRENDING = 2;


private final List<Hashtag> hashtags;
private final HashTagsListener listener;
ItemHashtagTrendingBinding binding;
ItemHashtagBinding binding2;

;


public HashtagAdapter(BaseActivity activity, List<Hashtag> hashtags, HashTagsListener hashTagsListener) {
    super(activity);
    this.hashtags = hashtags;
    this.listener = hashTagsListener;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    LayoutInflater layoutInflater =
            LayoutInflater.from(parent.getContext());
    switch (viewType) {
        case ITEM_HASHTAG:
            ItemHashtagBinding itemHashtagBinding =
                    ItemHashtagBinding.inflate(layoutInflater, parent, false);
            return new HashTagViewHolder(itemHashtagBinding);
        case ITEM_TRENDING:
            ItemHashtagTrendingBinding itemHashtagTrendingBinding =
                    ItemHashtagTrendingBinding.inflate(layoutInflater, parent, false);
            return new HashTagViewPercentageHolder(itemHashtagTrendingBinding);

    }
    return null;
}


@Override
public int getItemViewType(int position) {
    return hashtags.get(position).getType();
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    holder.bind(hashtags.get(position));
}

@Override
public int getItemCount() {
    return hashtags.size();
}

public void updateHashTag(Hashtag hashtag) {
    for (int i = 0; i < hashtags.size(); i++) {
        if (hashtags.get(i).equals(hashtag)) {
            notifyItemChanged(i);
            break;
        }
    }
}

public void addHashTags(List<Hashtag> hashtags) {
    int previousSize = getItemCount();
    this.hashtags.addAll(hashtags);
    notifyItemRangeInserted(previousSize, hashtags.size());
}


private class HashTagViewHolder extends BaseRecyclerAdapter.ViewHolder<Hashtag> {


    public HashTagViewHolder(ItemHashtagBinding dataBinding) {
        super(dataBinding);
        binding2 = dataBinding;
    }

    @Override
    public void bind(Hashtag hashtag) {
        binding2.setHashTag(hashtag);
        binding2.tvHashtag.setOnClickListener(view -> listener.onClick(hashtag));
        binding2.ivSubscribe.setOnClickListener(view -> {
            hashtag.setSubscribed(!hashtag.isSubscribed());
            listener.onSubscribed(hashtag);
            notifyItemChanged(getAdapterPosition());
        });
    }

}


private class HashTagViewPercentageHolder extends BaseRecyclerAdapter.ViewHolder<Hashtag> {



    public HashTagViewPercentageHolder(ItemHashtagTrendingBinding dataBinding) {
        super(dataBinding);
        binding = dataBinding;
    }

    @Override
    public void bind(Hashtag hashtag) {
        binding.setHashTag(hashtag);
        binding.tvHashtag.setOnClickListener(view -> listener.onClick(hashtag));
        binding.ivSubscribe.setOnClickListener(view -> {
            if (hashtag.getId() != -1) {
                hashtag.setSubscribed(!hashtag.isSubscribed());
            }
            listener.onSubscribed(hashtag);
            notifyItemChanged(getAdapterPosition());
        });
    }
}

public void moveTagToTop(int hashTagId) {
    Log.d("***HashTagAdapter", "Entered");
    for (int i = 0; i < hashtags.size(); i++) {
        if (hashtags.get(i).getId() == hashTagId) {
            if (Constants.UPDATED_AUDIENCE_POS+1 <= 3) {
                Collections.swap(hashtags, i, Constants.UPDATED_AUDIENCE_POS + 1);
                notifyItemMoved(i, Constants.UPDATED_AUDIENCE_POS + 1);
                Constants.UPDATED_AUDIENCE_POS = Constants.UPDATED_AUDIENCE_POS + 1;

               // binding2.getRoot().setBackgroundColor(context.getResources().getColor(R.color.colorPrimary));
            } else {
                {
                    Toast.makeText(context, context.getResources().getString(R.string.no_more_than_3), Toast.LENGTH_LONG).show();
                }
            }

        }

    /*Collections.swap(re.getItems(), position, 0);
    notifyItemMoved(position, 0);*/
    }


}

}