如何为RecyclerView设计分页滚动条

implementation 'androidx.recyclerview:recyclerview:1.2.1'

<androidx.recyclerview.widget.RecyclerView
    android:id="@+id/recyclerView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    />

RecyclerView recyclerView = findViewById(R.id.recyclerView);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
RecyclerView.Adapter adapter = new YourAdapter(dataList); // 替换为你自己的Adapter
recyclerView.setAdapter(adapter);

implementation 'androidx.paging:paging-runtime:3.0.1'

public class YourPagingSource extends PagingSource<Integer, YourData> {
    @Override
    public suspend LoadResult<Integer, YourData> load(
        LoadParams<Integer> params
    ) {
        try {
            // 根据params.key加载对应页码的数据
            // 返回LoadResult.Page对象，包含加载的数据和前后页码信息
            // 例如：return LoadResult.Page(dataList, prevKey, nextKey);
        } catch (Exception e) {
            // 加载失败时，返回LoadResult.Error对象
            return LoadResult.Error(e);
        }
    }
}

PagingData<YourData> pagingData = new PagingData<>();

public class YourPagingDataAdapter extends PagingDataAdapter<YourData, YourViewHolder> {
    protected YourPagingDataAdapter() {
        super(new DiffUtil.ItemCallback<YourData>() {
            @Override
            public boolean areItemsTheSame(YourData oldItem, YourData newItem) {
                // 判断两个数据项是否代表同一个对象
                // 例如：return oldItem.getId() == newItem.getId();
            }

            @Override
            public boolean areContentsTheSame(YourData oldItem, YourData newItem) {
                // 判断两个数据项的内容是否相同
                // 例如：return oldItem.equals(newItem);
            }
        });
    }

    @Override
    public YourViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        // 创建ViewHolder并返回
        // 例如：return new YourViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_layout, parent, false));
    }

    @Override
    public void onBindViewHolder(YourViewHolder holder, int position) {
        // 绑定数据到ViewHolder
        // 例如：holder.bind(getItem(position));
    }
}

YourPagingDataAdapter adapter = new YourPagingDataAdapter();
adapter.submitData(lifecycle, pagingData);
recyclerView.setAdapter(adapter);