Android RecyclerView列表中按钮点击事件的回调

本文主要讲述在activity中回调RecyclerView 适配器中item的button点击事件。
（适配器也可以直接注册事件本文不再写）

item布局中的button

数据对象

public class zxbx_dfd {
    private String wxdh, sbname, sbcode, address, content;

    public zxbx_dfd(String wxdh, String sbname, String sbcode, String address, String content) {
        this.wxdh = wxdh;
        this.sbname = sbname;
        this.sbcode = sbcode;
        this.address = address;
        this.content = content;
    }

    public String getWxdh() {
        return wxdh;
    }

    public String getSbname() {
        return sbname;
    }


    public String getSbcode() {
        return sbcode;
    }

    public String getAddress() {
        return address;
    }

    public String getContent() {
        return content;
    }
}

适配器

public class MyRecyclerViewAdapter extends RecyclerView.Adapter implements View.OnClickListener{

    private List list;//数据源
    private Context context;//上下文

    public MyRecyclerViewAdapter(List list, Context context) {
        this.list = list;
        this.context = context;
    }

    @NonNull
    @Override
    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.zxbx_fd_item,parent,false);
        return new MyViewHolder(view);
    }

    //绑定
    @Override
    public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
        zxbx_dfd data = list.get(position);
        holder.wxdh.setText(data.getWxdh());
        holder.sbname.setText(data.getSbname());
        holder.sbcode.setText(data.getSbcode());
        holder.address.setText(data.getAddress());
        holder.content.setText(data.getContent());

        holder.itemView.setTag(position);
        holder.send.setTag(position);
        holder.delete.setTag(position);
    }


    //有多少个item
    @Override
    public int getItemCount() {
        return list.size();
    }



    //创建MyViewHolder继承RecyclerView.ViewHolder
    public class MyViewHolder extends RecyclerView.ViewHolder{
        private TextView wxdh,sbname,sbcode,address,content;
        private Button send,delete;

        public MyViewHolder(View itemView) {
            super(itemView);

            wxdh = (TextView) itemView.findViewById(R.id.wxdh);
            sbname = (TextView) itemView.findViewById(R.id.sbname);
            sbcode = (TextView) itemView.findViewById(R.id.sbcode);
            address = (TextView) itemView.findViewById(R.id.address);
            content = (TextView) itemView.findViewById(R.id.content);
            send = (Button) itemView.findViewById(R.id.send);
            delete = (Button) itemView.findViewById(R.id.delete);
            // 为ItemView添加点击事件
            itemView.setOnClickListener(MyRecyclerViewAdapter.this);
            send.setOnClickListener(MyRecyclerViewAdapter.this);
            delete.setOnClickListener(MyRecyclerViewAdapter.this);
        }

    }



    //=======================以下为item中的button控件点击事件处理===================================

    //item里面有多个控件可以点击
    public enum  ViewName {
        ITEM,
        PRACTISE
    }

    //自定义一个回调接口来实现Click和LongClick事件
    public interface onItemClickListener  {
        void onItemClick(View v, ViewName viewName, int position);
        void onItemLongClick(View v);
    }

    private onItemClickListener mOnItemClickListener;//声明自定义的接口

    //定义方法并暴露给外面的调用者
    public void setOnItemClickListener(onItemClickListener  listener) {
        this.monItemClickListener  = listener;
    }

    @Override
    public void onClick(View v) {
        int position = (int) v.getTag(); //getTag()获取数据
        if (monItemClickListener != null) {
            switch (v.getId()){
                case R.id.send://
                    mOnItemClickListener.onItemClick(v, ViewName.PRACTISE, position);
                    break;
                default:
                    mOnItemClickListener.onItemClick(v, ViewName.ITEM, position);
                    break;
            }
        }
    }
}

Activity实现 回调Button点击事情。

RecyclerView recyclerView = (RecyclerView) mView.findViewById(R.id.recycler_view);
        LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
        recyclerView.setLayoutManager(layoutManager);
        MyRecyclerViewAdapter adapter = new MyRecyclerViewAdapter(fruitList,getActivity());
        recyclerView.setAdapter(adapter);
        adapter.setOnItemClickListener(new MyRecyclerViewAdapter.OnItemClickListener() {
    @Override
    public void onItemClick(View v, MyRecyclerViewAdapter.ViewName viewName, int position) {
        switch (v.getId()){
            case R.id.send:
                Toast.makeText(getActivity(),"你点击了发送按钮"+(position+1),Toast.LENGTH_SHORT).show();
                break;
            case R.id.delete:
                Toast.makeText(getActivity(),"你点击了删除按钮"+(position+1),Toast.LENGTH_SHORT).show();
                break;
            default:
                Toast.makeText(getActivity(),"你点击了item"+(position+1),Toast.LENGTH_SHORT).show();
                break;
        }
    }