RecyclerView条目点击和长按

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   RecyclerView虽然很强大，但是没有点击事件，美中不足！所以需要自己写点击事件啦。

   Activity界面

public class MainActivity extends AppCompatActivity {

    private RecyclerView rv;
    private SwipeRefreshLayout sr;
    private List<String> data;
    private MyRecyclerViewAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();//初始化view
        initData();//填充数据

        //条目点击事件,调用适配器写的条目点击的方法
        adapter.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void setOnItemClickListener(View view, int position) {
                Toast.makeText(MainActivity.this,"这是条目"+position,Toast.LENGTH_SHORT).show();
            }
        });
        //条目长按事件,调用适配器写的条目长按的方法
        adapter.setOnLongClickListener(new OnLongClickListener() {
            @Override
            public void setOnLongClickListener(View view, int position) {
                //长按删除
                data.remove(position);
                //刷新适配器
                adapter.notifyDataSetChanged();
            }
        });

        sr.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                initData();
                sr.setRefreshing(false);
            }
        });
    }
    private void initData() {
        data = new ArrayList<>();
        for (int i = 0; i <20; i++) {
            data.add("这是条目"+i);
        }
        adapter = new MyRecyclerViewAdapter(MainActivity.this, data);
        rv.setAdapter(adapter);//设置适配器
    }

    private void initView() {
        rv = (RecyclerView) findViewById(R.id.rv);
        sr = (SwipeRefreshLayout) findViewById(R.id.sr);

        LinearLayoutManager linearLayoutManager=new LinearLayoutManager(this);//线性样式显示，和ListView显示的布局格式一致
        GridLayoutManager gridLayoutManager=new GridLayoutManager(this,3);//九宫格样式显示,和GridView显示的布局格式一致
        StaggeredGridLayoutManager staggeredGridLayoutManager=new StaggeredGridLayoutManager(3,StaggeredGridLayoutManager.VERTICAL);//瀑布流样式显示
        rv.setLayoutManager(linearLayoutManager);//LinearLayoutManager、gridLayoutManager、staggeredGridLayoutManager三者都可使用

    }
}
activity_main布局文件：

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
   >
    <android.support.v4.widget.SwipeRefreshLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/sr">
        <android.support.v7.widget.RecyclerView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/rv">
        </android.support.v7.widget.RecyclerView>
    </android.support.v4.widget.SwipeRefreshLayout>
</LinearLayout>

适配器布局文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:padding="20dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/tv"/>
</LinearLayout>

 
适配器代码：

public class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.MyViewHolder> {
    private List<String> data=new ArrayList<>();
    private Context context;
    //定义两个变量，接收条目点击和长按的对象
    private OnItemClickListener mOnItemClickListener;
    private OnLongClickListener mOnLongClickListener;
    public MyRecyclerViewAdapter(Context context,List<String> data){
        this.context=context;
        this.data=data;
    }
    //创建条目点击的方法，用变量接收一下接口对象
    public void setOnItemClickListener(OnItemClickListener onItemClickListener){
        this.mOnItemClickListener=onItemClickListener;

    }
    //创建条目长按的方法，用变量接收一下接口对象
    public void setOnLongClickListener(OnLongClickListener onLongClickListener){
        this.mOnLongClickListener=onLongClickListener;
    }
    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        //创建自己的ViewHolder
        View view = LayoutInflater.from(context).inflate(R.layout.recycletview, null);
        MyViewHolder myViewHolder=new MyViewHolder(view);
        return myViewHolder;
    }

    @Override
    public void onBindViewHolder(final MyViewHolder holder, final int position) {
        holder.tv.setText(data.get(position));
        //holder的视图点击监听
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

               mOnItemClickListener.setOnItemClickListener(holder.tv,position);//控件和条目下标
            }
        });
        //holder的条目视图长按监听
        holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View view) {
                mOnLongClickListener.setOnLongClickListener(holder.tv,position);
                return false;
            }
        });
    }

    @Override
    public int getItemCount() {
        return data!=null?data.size():0;
    }
    //创建ViewHolder
    class MyViewHolder extends RecyclerView.ViewHolder{

        private  TextView tv;

        public MyViewHolder(View itemView) {
            super(itemView);
            //使用itemView找到控件
            tv = (TextView) itemView.findViewById(R.id.tv);
        }
    }
}

两个接口：

public interface OnItemClickListener {
    void setOnItemClickListener(View view,int position);
}

public interface OnLongClickListener {
    void setOnLongClickListener(View view, int position);
}

 代码就这么多，很好理解！