Recyclerview条目的点击回调

来源：互联网发布：2017淘宝现在还能刷吗编辑：程序博客网时间：2024/06/05 14:13

第一个，MyOnItemClickListener.java,响应 RecyclerView item的点击事件：

import android.view.View;/** * item点击接口 */public interface MyOnItemClickListener {    void OnItemClickListener(View view, int position);}1
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第二个，MyOnItemLongClickListener.java,响应 RecyclerView item的长按事件：

import android.view.View;/** * item长按接口 */public interface MyOnItemLongClickListener {    void OnItemLongClickListener(View view, int position);}1
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然后在MyRecyclerViewAdapter里面声明这两个接口，定义两个方法，用来让adapter在Activity里面回调，并在onBindViewHolder中给item设置监听：

定义的方法：

    /**     * 列表点击事件     *     * @param itemClickListener     */    public void setOnItemClickListener(MyOnItemClickListener itemClickListener) {        this.itemClickListener = itemClickListener;    }    /**     * 列表长按事件     *     * @param itemLongClickListener     */    public void setOnItemLongClickListener(MyOnItemLongClickListener itemLongClickListener) {        this.itemLongClickListener = itemLongClickListener;    }1
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onBindViewHolder中：

        /*自定义item的点击事件不为null，设置监听事件*/        if (itemClickListener != null) {            myViewHolder.itemView.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View view) {                    itemClickListener.OnItemClickListener(myViewHolder.itemView, myViewHolder.getLayoutPosition());                }            });        }        /*自定义item的长按事件不为null，设置监听事件*/        if (itemLongClickListener != null) {            myViewHolder.itemView.setOnLongClickListener(new View.OnLongClickListener() {                @Override                public boolean onLongClick(View view) {                    itemLongClickListener.OnItemLongClickListener(myViewHolder.itemView, myViewHolder.getLayoutPosition());                    return true;                }            });        }1
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最后在Activity里面调用setOnItemClickListener和setOnItemLongClickListener就可以了。

下面看完整代码：
MyRecyclerViewAdapter.java

import android.content.Context;import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.TextView;import java.util.List;/** * Created by jia on 2015/10/16. */class MyRecyclerViewAdapter extends RecyclerView.Adapter {    private Context context;    private List<String> list;    private MyOnItemClickListener itemClickListener;    private MyOnItemLongClickListener itemLongClickListener;    public MyRecyclerViewAdapter(Context context, List<String> list) {        this.context = context;        this.list = list;    }    /**     * onCreateViewHolder中负责为Item创建视图     *     * @param viewGroup     * @param i     * @return     */    @Override    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {        /*初始化填充RecyclerView的item*/        View viewItem = LayoutInflater.from(context).inflate(R.layout.list_item, viewGroup, false);        /*返回自定义的ViewHolder*/        MyViewHolder myViewHolder = new MyViewHolder(viewItem);        return myViewHolder;    }    /**     * onBindViewHolder负责将数据绑定到Item的视图上。     *     * @param viewHolder     * @param position     */    @Override    public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int position) {        /*将接收到的ViewHolder强转成自定义的VIewHolder*/        final MyViewHolder myViewHolder = (MyViewHolder) viewHolder;        /*为Item设置数据*/        myViewHolder.getIdView().setText(list.get(position));        myViewHolder.getNameView().setText("name");        /*自定义item的点击事件不为null，设置监听事件*/        if (itemClickListener != null) {            myViewHolder.itemView.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View view) {                    itemClickListener.OnItemClickListener(myViewHolder.itemView, myViewHolder.getLayoutPosition());                }            });        }        /*自定义item的长按事件不为null，设置监听事件*/        if (itemLongClickListener != null) {            myViewHolder.itemView.setOnLongClickListener(new View.OnLongClickListener() {                @Override                public boolean onLongClick(View view) {                    itemLongClickListener.OnItemLongClickListener(myViewHolder.itemView, myViewHolder.getLayoutPosition());                    return true;                }            });        }    }    /**     * 本方法决定了绘制item的数量     *     * @return     */    @Override    public int getItemCount() {        return list.size();    }    /**     * 列表点击事件     *     * @param itemClickListener     */    public void setOnItemClickListener(MyOnItemClickListener itemClickListener) {        this.itemClickListener = itemClickListener;    }    /**     * 列表长按事件     *     * @param itemLongClickListener     */    public void setOnItemLongClickListener(MyOnItemLongClickListener itemLongClickListener) {        this.itemLongClickListener = itemLongClickListener;    }    class MyViewHolder extends RecyclerView.ViewHolder {        private TextView idView;        private TextView nameView;        public MyViewHolder(View itemView) {            super(itemView);            idView = (TextView) itemView.findViewById(R.id.id);            nameView = (TextView) itemView.findViewById(R.id.name);        }        public TextView getIdView() {            return idView;        }        public TextView getNameView() {            return nameView;        }    }}1
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MainActivity.java

import android.os.Bundle;import android.support.v7.app.ActionBarActivity;import android.support.v7.widget.GridLayoutManager;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.support.v7.widget.StaggeredGridLayoutManager;import android.view.View;import android.widget.Toast;import java.util.ArrayList;import java.util.List;public class MainActivity extends ActionBarActivity {    private RecyclerView recyclerView;    private MyRecyclerViewAdapter adapter;    private List<String> list;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        recyclerView = (RecyclerView) findViewById(R.id.recyclerView);        initData();        /*         * 初始化一个布局管理器，这里是默认的竖直线性，效果如上图所示         * 其实完整写法为：         * LinearLayoutManager manager = new LinearLayoutManager(context, orientation, reverseLayout);         * 其中三个参数分别表示：         * 1.context：上下文         * 2.orientation：布局方向；         *      LinearLayoutManager.VERTICAL：竖直方向（默认）         *      LinearLayoutManager.HORIZONTAL：水平方向         * 3.reverseLayout：布局数据是否反向；false：正常（默认）；true：反向；         * 下边的写法就相当于：new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false);         */        LinearLayoutManager manager = new LinearLayoutManager(this);        recyclerView.setLayoutManager(manager);        adapter = new MyRecyclerViewAdapter(MainActivity.this, list);        recyclerView.setAdapter(adapter);        /*点击事件*/        adapter.setOnItemClickListener(new MyOnItemClickListener() {            @Override            public void OnItemClickListener(View view, int position) {                Toast.makeText(getApplicationContext(), "position" + position + "被点击", Toast.LENGTH_SHORT).show();            }        });        /*长按事件*/        adapter.setOnItemLongClickListener(new MyOnItemLongClickListener() {            @Override            public void OnItemLongClickListener(View view, int position) {                /*长按删除*/                list.remove(position);                adapter.notifyItemRemoved(position);            }        });    }    /**     * 初始化集合，添加数据     */    private void initData() {        list = new ArrayList<>();        for (int i = 0; i < 100; i++) {            list.add("id：" + i);        }    }}、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、、简洁版
1.定义一个接口
public interface MyOnItemClickListener {    void OnItemClickListener(View view, int position);}
2.适配器中添加：
private MyOnItemClickListener itemClickListener;
public void setOnItemClickListener(MyOnItemClickListener itemClickListener) {
    this.itemClickListener = itemClickListener;
}
3.适配器onBindViewHolder中添加：
if (itemClickListener != null) {
    holder.itemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            itemClickListener.OnItemClickListener(holder.itemView, holder.getLayoutPosition());
        }
    });
}
HomeAdapter2.this.setOnItemClickListener(new MyOnItemClickListener() {
    @Override
    public void OnItemClickListener(View view, int position) {
        Toast.makeText(context,"er",Toast.LENGTH_LONG).show();
    }
});
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