Recyclerview 多种 item 布局的通用 Adapter MultiItemAdapter

这个多种item的通用Adapter继承的CommonAdapter  是上一篇 打造 Recyclerview 的万能 Adapter  的内容   

demo地址

/**
 * 多种 item 布局的通用 adapter
 * 继承RecyclerView 的通用 CommonAdapter
 * Created by suwenlai on 16-12-29.
 */

public abstract class MultiItemAdapter extends RecyclerView.Adapter {

    private MultiItemTypeSupport mMultiItemTypeSupport;

    /**
     * 点击监听接口
     */
    public interface OnItemClickListener {
        void onItemClick(View view, int position);

        void onItemLongClick(View view, int position);
    }

    protected OnItemClickListener mOnitemClickListener;


    @Override
    public int getItemViewType(int position) {
        return mMultiItemTypeSupport.getItemViewType(position, (T) mDatas.get(position));
    }


    /**
     * 设置点击监听
     *
     * @param onitemClickListener 点击监听的接口
     */
    public void setOnitemClickListener(OnItemClickListener onitemClickListener) {
        this.mOnitemClickListener = onitemClickListener;
    }


    protected Context mContext;
    /**
     * 所有 item 的数据集合
     */
    protected List mDatas;


    protected LayoutInflater mInflater;


    public MultiItemAdapter(Context context, List datas, MultiItemTypeSupport support) {
        mContext = context;
        mDatas = datas;
        mMultiItemTypeSupport = support;
        mInflater = LayoutInflater.from(mContext);
    }

    @Override
    public CommonHolder onCreateViewHolder(ViewGroup parent, int viewType) {

        int mLayoutId = mMultiItemTypeSupport.getLayoutId(viewType);
        CommonHolder holder = CommonHolder.getHolder(mContext, parent, mLayoutId);
        return holder;
    }

    @Override
    public void onBindViewHolder(final CommonHolder holder, int position) {
        if (mOnitemClickListener != null) {
            holder.itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    int position = holder.getLayoutPosition();
                    mOnitemClickListener.onItemClick(holder.itemView, position);
                }
            });

            holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
                @Override
                public boolean onLongClick(View v) {
                    int position = holder.getLayoutPosition();
                    mOnitemClickListener.onItemLongClick(holder.itemView, position);
                    return false;
                }
            });
        }
        bindHolder(holder, mDatas.get(position), getItemViewType(position));
    }


    /**
     * BindHolder 绑定 view 给 view 赋值
     *
     * @param holder holder
     * @param t      holder 里面 view 赋值的数据
     */
    public abstract void bindHolder(CommonHolder holder, T t, int type);


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

    /**
     * 添加一条数据
     *
     * @param position 添加数据的位置
     * @param content  添加数据的内容
     */
    public void addData(int position, T content) {
        if (position >= 0) {

            mDatas.add(position, content);
            notifyItemInserted(position);
        }
    }

    /**
     * 删除一条数据
     *
     * @param position 删除数据的位置
     */
    public void removeData(int position) {
        if (position >= 0) {

            mDatas.remove(position);
            notifyItemRemoved(position);
        }
    }
}

MultiItemTypeSupport接口在这里  

 

/** 多种 item 布局支持接口
 * Created by suwenlai on 16-12-29.
 */

public interface MultiItemTypeSupport {
    /**
     * 根据不同的 itemtype 获取不同类型的布局文件
     * @param itemType
     * @return
     */
    int getLayoutId(int itemType);

    /**
     * 根据不同 position 的 bean 生成不同的的 item 布局
     * @param position
     * @param t 多种不同 item 传入的 bean 数据
     * @return
     */
    int getItemViewType(int position,T t);
}