OKhttp

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加依赖

recyclerview依赖：
     compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'
okhttp依赖：
 compile 'com.squareup.okhttp3:okhttp:3.9.0'
gson依赖：
 compile 'com.google.code.gson:gson:2.8.1'
glide：依赖
 compile 'com.github.bumptech.glide:glide:3.7.0'

先加权限

<uses-permission android:name="android.permission.INTERNET"/>    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

主布局

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.bwei.com.day.MainActivity">    <android.support.v7.widget.RecyclerView        android:id="@+id/recycler"        android:layout_width="match_parent"        android:layout_height="match_parent"></android.support.v7.widget.RecyclerView></RelativeLayout>main类public class MainActivity extends AppCompatActivity {            RecyclerView recycler;          List<Bean.DataBean.WallpaperListInfoBean>list  = new ArrayList<>();    String path = "http://bz.budejie.com/?typeid=2&ver=3.4.3&no_cry=1&client=android&c=wallPaper&a=random&bigid=0";    Handler handler = new Handler();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //初始化控件        initData();        initView();     }    private void initView() {        recycler = (RecyclerView) findViewById(R.id.recycler);        LinearLayoutManager manager = new LinearLayoutManager(this);        GridLayoutManager grid = new GridLayoutManager(this,3);        //瀑布流        StaggeredGridLayoutManager stge= new StaggeredGridLayoutManager(2,StaggeredGridLayoutManager.VERTICAL);        recycler.setLayoutManager(manager);    }    private void initData() {        OkHttpClient client = new OkHttpClient();        Request request = new Request.Builder()                .url(path)                .build();        Call call = client.newCall(request);        call.enqueue(new Callback() {            @Override            public void onFailure(Call call, IOException e) {                Log.d("onFailure", "请求失败");            }            @Override            public void onResponse(Call call, Response response) throws IOException {                String result = response.body().string();                Bean bean = Bean.objectFromData(result);                list = bean.data.WallpaperListInfo;                handler.post(new Runnable() {                    @Override                    public void run() {           recycler.setAdapter(new MyAdapter(MainActivity.this,list));                    }                });            }        });    }}

适配器
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder>{            Context context;    List<Bean.DataBean.WallpaperListInfoBean>list = new ArrayList<>();    public MyAdapter(Context context, List<Bean.DataBean.WallpaperListInfoBean> list) {        this.context = context;        this.list = list;    }    @Override    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {    View view = View.inflate(context,R.layout.item,null);        return new MyAdapter.ViewHolder(view);    }    @Override    public void onBindViewHolder(ViewHolder holder, int position) {        holder.tv.setText(list.get(position).UserName);        Glide.with(context).load(list.get(position).WallPaperMiddle).into(holder.img);    }    @Override    public int getItemCount() {        return list==null ? 0 : list.size();    }    protected class ViewHolder extends RecyclerView.ViewHolder {            TextView tv;        ImageView img;        public ViewHolder(View itemView) {            super(itemView);            tv = itemView.findViewById(R.id.tv);            img = itemView.findViewById(R.id.img);        }    }}
bean类根据自己的解析来写！

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