Android中实现RecyclerView，并对item及其多个子控件的点击事件监听

目录

背景

实现RecyclerView

第一步、 新建item的xml

第二步、在activity的布局中引入 RecyclerView

第三步、新建一个adapter 

 第四步、在activity中初始化绑定adapter即可

实现item及其多个子组件点击事件监听

第一步、 适配器中创建监听对象

第二步、适配器中绑定监听item和子组件

第三点、在activity中实现方法

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背景

如下图所示，在对RecyclerView中item及其多个子组件都需要不同的点击事件监听处理，需要使用到adapter的OnItemClickListener和OnItemChildClickListener两个对象。

实现RecyclerView

第一步、 新建item的xml

新建一个xml文件（black_item.xml）作为单个item的样式，代码如下：

 样式效果如下图：

第二步、在activity的布局中引入 RecyclerView

第三步、新建一个adapter 

用于相应数据和功能配置，代码如下：

public class BlackRVAdapter extends RecyclerView.Adapter {    private List myBlackList = new ArrayList();    public void setListData (List list) {        this.myBlackList = list;        notifyDataSetChanged(); // 刷新    }    @NonNull    @Override    public MyHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {        // 加载布局        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.black_item, parent, false);        MyHolder myHolder = new MyHolder(view);        return myHolder;    }    @Override    public void onBindViewHolder(@NonNull MyHolder holder, @SuppressLint("RecyclerView") int position) {        // 绑定数据        BlackItem BlackItem = myBlackList.get(position);        // 修改item样式        holder.black_address.setText(BlackItem.getIp_address());        holder.black_note.setText("备注：" + BlackItem.getNote());        holder.black_time.setText(BlackItem.getCreated_time());        holder.black_ip.setText(BlackItem.getIp());    }    @Override    public int getItemCount() {        return myBlackList.size();    }    static class MyHolder extends RecyclerView.ViewHolder {                TextView black_address;        TextView black_note;        TextView black_time;        TextView black_ip;        ImageView iv_copy_ip;        Button btn_black_del;        public MyHolder(@NonNull View itemView) {            super(itemView);            black_time = itemView.findViewById(R.id.black_item_time);            black_ip = itemView.findViewById(R.id.black_item_ip);            black_address = itemView.findViewById(R.id.black_item_address);            black_note = itemView.findViewById(R.id.black_item_note);            iv_copy_ip = itemView.findViewById(R.id.iv_copy_ip);            btn_black_del = itemView.findViewById(R.id.btn_black_del);        }    }}

 第四步、在activity中初始化绑定adapter即可

public class IpBlackListActivity extends AppCompatActivity {    private RecyclerView blackRecyclerView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_ip_black_list);        initView();      }    private void initView () {        blackRecyclerView = findViewById(R.id.rv_black);        // 绑定适配器        blackRVAdapter = new BlackRVAdapter();        blackRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));        blackRecyclerView.setAdapter(blackRVAdapter);        blackRecyclerView.addItemDecoration(new DividerItemDecoration(getContext(), DividerItemDecoration.VERTICAL)); // 添加下划线           }}

实现item及其多个子组件点击事件监听

第一步、 适配器中创建监听对象

public class BlackRVAdapter extends RecyclerView.Adapter {    private static OnItemChildClickListener onItemChildClickListener;    private static OnItemClickListener onItemClickListener;       public interface OnItemChildClickListener {        /**         * 子组件点击事件         * @param view         * @param position         * @param type 子组件类型，用于判断是哪个子组件         */        void onItemChildClick(View view, int position, String type);    }    public void setOnItemClickListener(OnItemChildClickListener listenser) {        onItemChildClickListener = listenser;    }    public interface OnItemClickListener {        void onItemClick(int position);    }    public void setOnItemClickListener(OnItemClickListener listenser) {        onItemClickListener = listenser;    }}

第二步、适配器中绑定监听item和子组件

public class BlackRVAdapter extends RecyclerView.Adapter {    private static OnItemChildClickListener onItemChildClickListener;    private static OnItemClickListener onItemClickListener;    static class MyHolder extends RecyclerView.ViewHolder {        public MyHolder(@NonNull View itemView) {            super(itemView);                        // 绑定子控件            iv_copy_ip = itemView.findViewById(R.id.iv_copy_ip);            btn_black_del = itemView.findViewById(R.id.btn_black_del);            // 子控件1            btn_black_del.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View view) {                    if (onItemChildClickListener != null) {                        onItemChildClickListener.onItemChildClick(view, getAdapterPosition(), "chil_1");                    }                }            });            // 子控件2            iv_copy_ip.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View view) {                    if (onItemChildClickListener != null) {                        onItemChildClickListener.onItemChildClick(view, getAdapterPosition(), "chil_2");                    }                }            });            // item点击监听            itemView.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View view) {                    if (onItemClickListener != null) {                        onItemClickListener.onItemClick(getAdapterPosition());                    }                }            });        }    }    public interface OnItemChildClickListener {        /**         * 子组件点击事件         * @param view         * @param position         * @param type 子组件类型，用于判断是哪个子组件         */        void onItemChildClick(View view, int position, String type);    }    public void setOnItemClickListener(OnItemChildClickListener listenser) {        onItemChildClickListener = listenser;    }    public interface OnItemClickListener {        void onItemClick(int position);    }    public void setOnItemClickListener(OnItemClickListener listenser) {        onItemClickListener = listenser;    }}

第三点、在activity中实现方法

public class IpBlackListActivity extends AppCompatActivity {    private RecyclerView blackRecyclerView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_ip_black_list);        initView();      }    private void initView () {        blackRecyclerView = findViewById(R.id.rv_black);        // 绑定适配器        blackRVAdapter = new BlackRVAdapter();        blackRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));        blackRecyclerView.setAdapter(blackRVAdapter);        blackRecyclerView.addItemDecoration(new DividerItemDecoration(getContext(), DividerItemDecoration.VERTICAL)); // 添加下划线        // 子组件点击事件        blackRVAdapter.setOnItemClickListener(new BlackRVAdapter.OnItemChildClickListener() {            @Override            public void onItemChildClick(View view, int position, String type) {                if (type.equals("chil_1")) {                    // 子组件1点击后执行...                                    } else if (type.equals("chil_2") {                    // 子组件2点击后执行...                                    }            }        }                // item点击事件        blackRVAdapter.setOnItemClickListener(new BlackRVAdapter.OnItemClickListener() {            @Override            public void onItemClick(int position) {                // item点击后执行...                            }        });           }}