MainActivity代码：

package com.fabian.recyclerviewtest;

import android.app.Activity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.view.animation.AlphaAnimation;
import android.view.animation.AnimationSet;
import android.view.animation.LayoutAnimationController;
import android.view.animation.ScaleAnimation;

import java.util.ArrayList;


public class MainActivity extends Activity {

private RecyclerView my_recycler_view;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
my_recycler_view= (RecyclerView) findViewById(R.id.my_recycler_view);
ArrayList entities=new ArrayList<>();
for(int i=0;i<<span style="color:#6897bb;">20;i++) {
entities.add(newEntity("https://ss0.baidu.com/94o3dSag_xI4khGko9WTAnF6hhy/super/whfpf=425,260,50/sign=c5464b263cf33a879e38535aa061240a/2f738bd4b31c8701b1f47af0217f9e2f0708ff62.jpg", "亚裔小伙帮纽约流浪汉变帅哥 画面温馨"));
entities.add(new Entity("https://ss0.baidu.com/-Po3dSag_xI4khGko9WTAnF6hhy/super/whfpf=425,260,50/sign=0cdecc1a76cf3bc7e8559eacb73d8e93/caef76094b36acaf450aa6eb7ad98d1001e99c3a.jpg", "英国蒸汽机集会 穿越时空回到蒸汽时代"));
entities.add(new Entity("http://upload.cankaoxiaoxi.com/2015/0720/1437345130279.jpg", "世界冲浪冠军赛中选手遭鲨鱼袭击全程"));
entities.add(new Entity("http://pic.miercn.com/uploads/allimg/150720/40-150H0091F1.jpg", "布隆迪小贩扒卡车回家 险象环生"));
entities.add(newEntity("http://i2.chinanews.com/simg/hd/2015/07/20/200x133_4ac632f104504b52ae686d18a51674bd.jpg", "长春一高校广场上晾晒金针菇 造型似八卦阵"));
entities.add(newEntity("http://i2.chinanews.com/simg/hd/2015/07/20/200x133_a84bbf720bec4acfb2a708ba481a3feb.jpg", "晒金针菇"));
entities.add(newEntity("http://i2.chinanews.com/simg/hd/2015/07/20/200x133_865e3c7ea863461aabdd80e8c0e65de1.jpg", "广场上晒金针菇"));
}
RVAdapter rvAdapter=new RVAdapter(entities,this);

LinearLayoutManager mLayoutManager = new LinearLayoutManager(this);
// GridLayoutManager mLayoutManager=new GridLayoutManager(this,3);
//StaggeredGridLayoutManager mLayoutManager=new StaggeredGridLayoutManager(2,1);
my_recycler_view.setLayoutManager(mLayoutManager);

my_recycler_view.setAdapter(rvAdapter);

AnimationSet aset=new AnimationSet(false);
ScaleAnimation sa=new ScaleAnimation(0f,1f,0f,1f,0.5f,0.5f);
sa.setDuration(1500);
AlphaAnimation aa=new AlphaAnimation(0f,1f);
aa.setDuration(1500);
aset.addAnimation(sa);
aset.addAnimation(aa);
LayoutAnimationController controller = new LayoutAnimationController(aset, 0.5f);
controller.setOrder(LayoutAnimationController.ORDER_NORMAL);

my_recycler_view.setLayoutAnimation(controller);
}
}

Adapter代码：

package com.fabian.recyclerviewtest;

import android.content.Context;
import android.graphics.Bitmap;
import android.support.v7.widget.RecyclerView;
import android.util.LruCache;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.android.volley.RequestQueue;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.toolbox.Volley;

import java.util.ArrayList;


public class RVAdapter extends RecyclerView.Adapter{
private ArrayList entities;
private Context context;
private LayoutInflater inflater;
private RequestQueue mRequestQueue;
private final ImageLoader mImageLoader;

public RVAdapter(ArrayList entities, Context context) {
this.entities = entities;
this.context = context;
inflater=LayoutInflater.from(context);
mRequestQueue= Volley.newRequestQueue(context);
mImageLoader=new ImageLoader(mRequestQueue,new MyCache());
}

@Override
public MyHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view=inflater.inflate(R.layout.item_layout,viewGroup,false);
MyHolder myHolder=new MyHolder(view);
return myHolder;
}
@Override
public void onBindViewHolder(MyHolder viewHolder, int i) {
viewHolder.tv.setText(entities.get(i).getContent());
ImageLoader.ImageListener listener = ImageLoader.getImageListener(viewHolder.iv,android.R.drawable.ic_menu_rotate, android.R.drawable.ic_delete);
mImageLoader.get(entities.get(i).getUrl(), listener);
mRequestQueue.start();
}
@Override
public int getItemCount() {
return entities.size();
}
}
class MyHolder extends RecyclerView.ViewHolder
{
TextView tv;
ImageView iv;
public MyHolder(View itemView) {
super(itemView);
tv= (TextView) itemView.findViewById(R.id.textView);
iv= (ImageView) itemView.findViewById(R.id.imageView);
}
}

class MyCache implements ImageLoader.ImageCache
{
private LruCache,Bitmap> cache;
public MyCache()
{
cache=new LruCache, Bitmap>(8*1024*1024)
{
@Override
protected int sizeOf(String key, Bitmap bitmap) {
return bitmap.getRowBytes() * bitmap.getHeight();
}
};
}
@Override
public Bitmap getBitmap(String s) {
return cache.get(s);
}
@Override
public void putBitmap(String s, Bitmap bitmap) {
cache.put(s,bitmap);
}
}

Entity代码：

package com.fabian.recyclerviewtest;


public class Entity {
private String url;
private String content;

public Entity(String url, String content) {
this.url = url;
this.content = content;
}

public String getUrl() {
return url;
}

public void setUrl(String url) {
this.url = url;
}

public String getContent() {
return content;
}

public void setContent(String content) {
this.content = content;
}
}