RecyclerView 点击条目自动将该条目吸附到顶部的位置

Posted 2023-03-09 安果移不动

      (mBinding.rvSentenceList.layoutManager as LinearLayoutManager).scrollToPositionWithOffset(
                    position, 0
                );

也可以在adapter中设置

public class MyAdapter extends RecyclerView.Adapter<MyViewHolder> 
    private List<MyData> mDataList;
    private int mSelectedPosition = RecyclerView.NO_POSITION;

    public interface OnItemClickListener 
        void onItemClick(int position);
    

    private OnItemClickListener mOnItemClickListener;

    public void setOnItemClickListener(OnItemClickListener listener) 
        mOnItemClickListener = listener;
    

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) 
        // inflate view and create ViewHolder
    

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) 
        // bind data to ViewHolder
        // set selected state
        holder.itemView.setSelected(position == mSelectedPosition);
        holder.itemView.setOnClickListener(v -> 
            // update selected state and notify adapter
            mSelectedPosition = position;
            notifyDataSetChanged();
            // scroll to selected position
            RecyclerView recyclerView = (RecyclerView) parent;
            recyclerView.scrollToPosition(position);
        );
    

    @Override
    public int getItemCount() 
        return mDataList.size();