public class MainActivity extends AppCompatActivity {    private RecyclerView recyclerView;    private List<String> dataList  = new ArrayList<String>();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //找到控件       recyclerView = (RecyclerView) findViewById(R.id.recyclerView);        //初始化数据        initData();        //设置瀑布流的布局方式,参数一:3列 参数二:垂直方向        StaggeredGridLayoutManager staggeredGridLayoutManager = new StaggeredGridLayoutManager(3,StaggeredGridLayoutManager.VERTICAL);        //为recyclerView设置布局管理器        recyclerView.setLayoutManager(staggeredGridLayoutManager);        //创建适配器        final MyRecyclerViewAdapter myRecyclerViewAdapter =new MyRecyclerViewAdapter(this,dataList);        //设置适配器        recyclerView.setAdapter(myRecyclerViewAdapter);    //自定义监听        myRecyclerViewAdapter.setOnItemCickListener(new MyRecyclerViewAdapter.MyOnItemClickListener() {            @Override            public void myOnItemClickListener(int position, View view) {                Toast.makeText(MainActivity.this, "点击了第"+position+"条", Toast.LENGTH_SHORT).show();                myRecyclerViewAdapter.deleteData(position);            }        });        myRecyclerViewAdapter.setOnLongCickListener(new MyRecyclerViewAdapter.MyOnLongClickListener() {            @Override            public void myOnLongClickListener(int position, View view) {                myRecyclerViewAdapter.addData(position,"我是新来的");            }        });    }    private void initData() {        for (int i = 0; i < 30; i++) {            dataList.add(i+"");        }    }}

package fanggao.qf.recyclerstaggredgridview01;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.ArrayList;import java.util.List;import java.util.Random;/** * Created by Administrator on 2016/9/28. */public class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.MyViewHolder> {    private Context context;    private List<String> dataList ;    private int random;    private List<Integer>heightList = new ArrayList<Integer>();    private MyOnItemClickListener myOnItemClcikListener;    private MyOnLongClickListener myOnLongClickListener;    public MyRecyclerViewAdapter(Context context, List<String> dataList) {        this.context = context;        this.dataList = dataList;        //初始化高度        if(dataList != null&&dataList.size() != 0){            for (int i = 0; i < dataList.size(); i++) {                random = new Random().nextInt(200)+100;//[100,300)                heightList.add(random);            }        }    }    @Override    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        //加载布局        View inflate = LayoutInflater.from(context).inflate(R.layout.recyclerview_item, parent,false);        //将布局传入viewholder并返回给onBindViewHolder        return new MyViewHolder(inflate);    }    /**     * 该方法类似与listview中的getView方法,每次加载视图的时候都会调用,但是这里给了每个item随机的高度,因此当屏幕复用时,     * 会不断复用不同的高度,当屏幕滑到顶部时,会因为高度不等产生大片空白,然后回到初始状态,因此,需要给每个item记录高度,     * 将其存到集合,每次调用该item时,设置高度     * @param holder     * @param position     */    @Override    public void onBindViewHolder(final MyViewHolder holder, int position) {        holder.text.setText(dataList.get(position));        //设置高度        int height = heightList.get(position);        //得到控件的高度        ViewGroup.LayoutParams layoutParams = holder.text.getLayoutParams();        //设置高度        layoutParams.height = height;        //设置点击事件        if(myOnItemClcikListener != null && !holder.text.hasOnClickListeners()){            holder.text.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View v) {                    //回调方法,,将view控件和索引传回,索引必须是布局在父布局中的索引,否则索引错乱最终报错                    myOnItemClcikListener.myOnItemClickListener(holder.getLayoutPosition(),v);                }            });        }        if(myOnLongClickListener != null ){            holder.text.setOnLongClickListener(new View.OnLongClickListener() {                @Override                public boolean onLongClick(View v) {                    myOnLongClickListener.myOnLongClickListener(holder.getLayoutPosition(),v);                    return true;                }            });        }    }    @Override    public int getItemCount() {        return dataList.size();    }    public void deleteData(int position) {        //使用notifyItemInserted/notifyItemRemoved会有动画效果        // 而使用notifyDataSetChanged()则没有        heightList.remove(position);        dataList.remove(position);        notifyItemRemoved(position);    }    public void addData(int position,String str){        dataList.add(position,str);        int random = new Random().nextInt(200)+100;        heightList.add(position,random);        notifyItemInserted(position);    }    //注意:该类是公共的,不然适配器设置设置泛型失败  public class MyViewHolder extends RecyclerView.ViewHolder{        private TextView text;        public MyViewHolder(View itemView) {            super(itemView);            text = (TextView) itemView.findViewById(R.id.tv_text);        }    }    //对外暴露的方法,当设置该方法时,会创建接口的实现类    public void setOnItemCickListener(MyOnItemClickListener myOnItemClickListener){        this.myOnItemClcikListener = myOnItemClickListener;    }    public void setOnLongCickListener(MyOnLongClickListener myOnLongClickListener){        this.myOnLongClickListener = myOnLongClickListener;    }    //自定义点击接口    public interface MyOnItemClickListener{        void myOnItemClickListener(int position,View view);    }    //自定义长按接口    public interface MyOnLongClickListener{        void myOnLongClickListener(int position,View view);    }}