在ViewHolder中添加item点击事件接口（自定义

在Adapter中定义接口并提供回调static class HomeAdapter extends RecyclerView.Adapter<HomeAdapter.MyViewHolder> {

    private List<String> mList;    private Context mContext;    private OnItemClickListener mOnItemClickListener;

    public HomeAdapter(List<String> list, Context context) {        mList = list;        mContext = context;    }    //在里面实现具体的点击响应事件，同时传入两个参数：view和postion    public interface OnItemClickListener{        void onItemClick(View view, int position);

        void onItemLongClick(View view, int position);    }

    public void setOnItemClickListener(OnItemClickListener onItemClickListener) {        this.mOnItemClickListener = onItemClickListener;    }

    public void removeData(int position) {        mList.remove(position);        notifyDataSetChanged();    }

    @Override    public HomeAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        MyViewHolder holder = new MyViewHolder(LayoutInflater.from(mContext).inflate(R.layout.myrecy_item,                parent, false));        return holder;    }

    //对item控件进行点击事件的监听并回调给自定义的监听    @Override    public void onBindViewHolder(final HomeAdapter.MyViewHolder holder, int position) {        holder.mTextView.setText(mList.get(position));        if (mOnItemClickListener != null) {            holder.mTextView.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View view) {                    int pos = holder.getLayoutPosition();//当前Item列数                    mOnItemClickListener.onItemClick(holder.mTextView, pos);                }            });            holder.mTextView.setOnLongClickListener(new View.OnLongClickListener() {                @Override                public boolean onLongClick(View view) {                    int pos = holder.getLayoutPosition();                    mOnItemClickListener.onItemLongClick(holder.mTextView, pos);                    return false;                }

            });        }    }

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

    class MyViewHolder extends RecyclerView.ViewHolder {        TextView mTextView;        public MyViewHolder(View itemView) {            super(itemView);            mTextView = itemView.findViewById(R.id.tv_item);        }    }}

在Main中的使用：

private void setLister() {//事件监听    mAdapter.setOnItemClickListener(new HomeAdapter.OnItemClickListener() {        @Override        public void onItemClick(View view, int position) {            Toast.makeText(MyRecyclerActivity.this, "点击了第" + (position + 1) + "条", Toast.LENGTH_SHORT).show();        }

        @Override        public void onItemLongClick(View view, final int position) {            new AlertDialog.Builder(MyRecyclerActivity.this)                    .setTitle("确定要删除吗？")                    .setNegativeButton("取消", null)                    .setPositiveButton("确定", new DialogInterface.OnClickListener() {                        @Override                        public void onClick(DialogInterface dialogInterface, int i) {                            mAdapter.removeData(position);                        }                    }).show();        }    });}