1.public class RecyclerViewActivity extends ActivityBase{
    ActivityRecyclerviewBinding recyclerviewBinding;
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        recyclerviewBinding = ActivityRecyclerviewBinding.inflate(getLayoutInflater());
        setContentView(recyclerviewBinding.getRoot());
        LinearLayoutManager llManager = new LinearLayoutManager(this);
        //默认垂直展示，这里设置为水平显示
        llManager.setOrientation(LinearLayoutManager.HORIZONTAL);
        //设置 RecyclerView 的布局管理器
        recyclerviewBinding.rvUserinfo.setLayoutManager(llManager);
        List<UserInfo> userList = new ArrayList<>();
        userList.add(new UserInfo("苏妲己", R.mipmap.scc_1));
        ...
        userList.add(new UserInfo("王昭君", R.mipmap.scc_7));
        BaseRecyclerAdapter<UserInfo> adapter = new BaseRecyclerAdapter<UserInfo>(this,userList) {
            @Override
            public int getItemLayoutId(int viewType) {
                return R.layout.item_rv_userinfo;
            }
            @Override
            public void convert(RecyclerViewHolder holder, int position, UserInfo bean) {
                holder.setText(R.id.tv_name,bean.getName());
                holder.setText(R.id.tv_content,bean.getContent());
                holder.setImageResource(R.id.iv_head,bean.getHead());
            }
        };
        //设置 RecyclerView 的数据适配器。
        recyclerviewBinding.rvUserinfo.setAdapter(adapter);
        //addItemDecoration
        recyclerviewBinding.rvUserinfo.addItemDecoration(new RvDividerItemDecoration(this,10));
    }
}

1.public abstract class BaseRecyclerAdapter<T> extends RecyclerView.Adapter<RecyclerViewHolder> {
    protected final List<T> mData;
    protected final Context mContext;
    protected LayoutInflater mInflater;
    private OnItemClickListener mClickListener;
    private OnItemLongClickListener mLongClickListener;
    public BaseRecyclerAdapter(Context ctx, List<T> list) {
        mData = (list != null) ? list : new ArrayList<T>();
        mContext = ctx;
        mInflater = LayoutInflater.from(ctx);
    }
    @Override
    public RecyclerViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        创建一个新视图，该视图定义item的UI
        final RecyclerViewHolder holder = new RecyclerViewHolder(mContext,
                mInflater.inflate(getItemLayoutId(viewType), parent, false));
        if (mClickListener != null) {
            holder.itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    mClickListener.onItemClick(holder.itemView, holder.getLayoutPosition());
                }
            });
        }
        if (mLongClickListener != null) {
            holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
                @Override
                public boolean onLongClick(View v) {
                    mLongClickListener.onItemLongClick(holder.itemView, holder.getLayoutPosition());
                    return true;
                }
            });
        }
        return holder;
    }
    @Override
    public void onBindViewHolder(RecyclerViewHolder holder, int position) {
        convert(holder, position, mData.get(position));
    }
    @Override
    public int getItemCount() {
        return mData.size();
    }
    public void add(int pos, T item) {
        mData.add(pos, item);
        notifyItemInserted(pos);
    }
    public void delete(int pos) {
        mData.remove(pos);
        notifyItemRemoved(pos);
    }
    public void setOnItemClickListener(OnItemClickListener listener) {
        mClickListener = listener;
    }
    public void setOnItemLongClickListener(OnItemLongClickListener listener) {
        mLongClickListener = listener;
    }
    abstract public int getItemLayoutId(int viewType);
    abstract public void convert(RecyclerViewHolder holder, int position, T bean);
    public interface OnItemClickListener {
        public void onItemClick(View itemView, int pos);
    }
    public interface OnItemLongClickListener {
        public void onItemLongClick(View itemView, int pos);
    }
}