小编Dan*_*ari的帖子

我有一个 recyclerview(parent)，在片段中填充了一些 recyclerviews(child)，我想使用操作（例如单击操作）直接从片段更新每个嵌套的 recyclerviews(child)，我该如何在完美且高效的方式？

初始父适配器

     ParentAdapter adapter = new ParentAdapter(dataSet);
     mBinding.recyclerView.setAdapter(adapter);

父适配器.java

public class MainAdapter extends RecyclerView.Adapter<MainAdapter.ViewHolder> {

    private final RecyclerView.RecycledViewPool viewPool;
    private List<CartItemCategory> dataSet;

    public MainAdapter(List<CartItemCategory> dataSet) {

        this.dataSet = dataSet;
        
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        ShoppingCardParentItemLayoutBinding mBinding = ShoppingCardParentItemLayoutBinding.inflate(LayoutInflater.from(parent.getContext()), parent, false);
        return new ViewHolder(mBinding);
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        holder.mBinding.setCartItemCategory(dataSet.get(position));

        ChildAdapter childAdapter = new ChildAdapter(dataSet.get(position).getCartItems());
        holder.mBinding.recyclerView.setHasFixedSize(true);
        holder.mBinding.recyclerView.setAdapter(childAdapter);
        holder.mBinding.recyclerView.setRecycledViewPool(viewPool);
    }

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