recycle view item项添加监听

接口实现的类不一样，监听对象动作不一样（接口让一个对象有不同的行为）
监听item项就要设置一个监听接口

public interface OnItemClickListener {    void onItemClick(int position);}

在holder中写个设置监听方法

public void setItemClickListener(OnItemClickListener listener) {        mClickListener = listener;    }

监听的行为

mHomeAdaper.setOnItemClickListener(new HomeAdapter.OnItemClickListener() {            @Override            public void onItemClick(View view, int position) {                Toast.makeText(RecyclerViewActivity.this, "点击第" + (position + 1) + "条", Toast.LENGTH_SHORT).show();            }}}

行为发生的地方

private class HomeHolder extends RecyclerView.ViewHolder{        private TextView mTextView;        private HomeHolder(View itemView) {            super(itemView);            mTextView = (TextView) itemView.findViewById(R.id.tv_item);            mTextView.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View v) {                    mClickListener.onItemClick(getAdapterPosition());                }            });