Java代码实现垂直recyclerview嵌套水平recyclerview，刷新子recyclerview

下面是一个简单的示例代码，演示如何在垂直 RecyclerView 中嵌套水平 RecyclerView，并刷新子 RecyclerView：

首先，创建一个适配器类 VerticalAdapter 用于垂直 RecyclerView：

public class VerticalAdapter extends RecyclerView.Adapter<VerticalAdapter.VerticalViewHolder> {
    private List<List<String>> data; // 存储数据的二维列表

    // 构造方法，传入数据
    public VerticalAdapter(List<List<String>> data) {
        this.data = data;
    }

    @NonNull
    @Override
    public VerticalViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_vertical, parent, false);
        return new VerticalViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull VerticalViewHolder holder, int position) {
        List<String> rowData = data.get(position);
        HorizontalAdapter horizontalAdapter = new HorizontalAdapter(rowData);
        holder.horizontalRecyclerView.setAdapter(horizontalAdapter);
        holder.horizontalRecyclerView.setLayoutManager(new LinearLayoutManager(holder.horizontalRecyclerView.getContext(), LinearLayoutManager.HORIZONTAL, false));
    }

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

    public static class VerticalViewHolder extends RecyclerView.ViewHolder {
        RecyclerView horizontalRecyclerView;

        public VerticalViewHolder(@NonNull View itemView) {
            super(itemView);
            horizontalRecyclerView = itemView.findViewById(R.id.horizontal_recycler_view);
        }
    }
}

然后，创建一个适配器类 HorizontalAdapter 用于水平 RecyclerView：

public class HorizontalAdapter extends RecyclerView.Adapter<HorizontalAdapter.HorizontalViewHolder> {
    private List<String> data; // 存储数据的列表

    // 构造方法，传入数据
    public HorizontalAdapter(List<String> data) {
        this.data = data;
    }

    @NonNull
    @Override
    public HorizontalViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_horizontal, parent, false);
        return new HorizontalViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull HorizontalViewHolder holder, int position) {
        String item = data.get(position);
        holder.textView.setText(item);
    }

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

    public static class HorizontalViewHolder extends RecyclerView.ViewHolder {
        TextView textView;

        public HorizontalViewHolder(@NonNull View itemView) {
            super(itemView);
            textView = itemView.findViewById(R.id.text_view);
        }
    }
}

最后，在你的 Activity 或 Fragment 中使用垂直 RecyclerView：

public class MainActivity extends AppCompatActivity {
    private RecyclerView verticalRecyclerView;
    private VerticalAdapter verticalAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        verticalRecyclerView = findViewById(R.id.vertical_recycler_view);
        verticalRecyclerView.setLayoutManager(new LinearLayoutManager(this));
        
        // 模拟数据
        List<List<String>> data = new ArrayList<>();
        for (int i = 0; i < 5; i++) {
            List<String> rowData = new ArrayList<>();
            for (int j = 0; j < 10; j++) {
                rowData.add("Item " + j);
            }
            data.add(rowData);
        }
        
        verticalAdapter = new VerticalAdapter(data);
        verticalRecyclerView.setAdapter(verticalAdapter);
    }

    // 刷新指定位置的子 RecyclerView
    private void refreshChildRecyclerView(int position) {
        verticalAdapter.notifyItemChanged(position);
    }
}

这样就实现了垂直 RecyclerView 嵌套水平 RecyclerView，并可以通过调用 `refreshChildRecyclerView` 方法来刷新指定位置的子 RecyclerView。