RecyclerView+Retrofit+OkHttp+RxJava

*图片初始化public class FrescoClass extends Application{    @Override    public void onCreate() {        super.onCreate();        Fresco.initialize(this);    }}

*主页面

public class MainActivity extends AppCompatActivity {

private RecyclerView mRv;

@Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();        Flowable<UserBean> add = RetrofitHelper.getShopAPI().add();        //使用Rxjava异步        add.subscribeOn(Schedulers.io())//被观察者执行线程                .observeOn(AndroidSchedulers.mainThread())//观察者线程                .subscribe(new Consumer<UserBean>() {                    @Override                    public void accept(UserBean userBean) throws Exception {                        List<UserBean.NewslistBean> newslist = userBean.getNewslist();                        mRv.setLayoutManager(new LinearLayoutManager(MainActivity.this));                        MyAdapter myAdapter = new MyAdapter(newslist,MainActivity.this);                        mRv.setAdapter(myAdapter);                       // Toast.makeText(MainActivity.this,newslist.get(1).getCtime(),Toast.LENGTH_LONG).show();                    }                });

}

private void initView() {        mRv = (RecyclerView) findViewById(R.id.rv);    }}

*适配器public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{    private List<UserBean.NewslistBean> list;    private Context context;

public MyAdapter(List<UserBean.NewslistBean> list, Context context) {        this.list = list;        this.context = context;    }

@Override    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view = LayoutInflater.from(context).inflate(R.layout.item,parent,false);        return new MyViewHolder(view);    }

@Override    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {        MyViewHolder my = (MyViewHolder) holder;        my.tv.setText(list.get(position).getTitle());        Uri uri = Uri.parse(list.get(position).getPicUrl());        my.img.setImageURI(uri);    }

@Override    public int getItemCount() {        return list.size();    }    class MyViewHolder extends RecyclerView.ViewHolder{

private final SimpleDraweeView img;        private final TextView tv;

public MyViewHolder(View itemView) {            super(itemView);            img = itemView.findViewById(R.id.img);           tv = itemView.findViewById(R.id.tv);        }    }}

*网络接口

public class net {    public static final String A = "http://api.tianapi.com/";    public static final String B = "nba/?key=71e58b5b2f930eaf1f937407acde08fe&num=10";}

* 封装的网络请求的类

public class RetrofitHelper {

private static OkHttpClient okHttpClient;

private static ServiceApi serviceApi;

static {        initOkHttpClient();    }

/**     * 初始化 OkHttpClient     */    private static void initOkHttpClient() {

if (okHttpClient == null) {            synchronized (RetrofitHelper.class) {                if (okHttpClient == null) {                    okHttpClient = new OkHttpClient.Builder()                            .build();                }            }        }

}

/**     * 定义一个泛型方法     *     * @param clazz     * @param url     * @param <T>     * @return     */    public static <T> T createAPI(Class<T> clazz, String url) {        Retrofit retrofit = new Retrofit.Builder()                .baseUrl(url)                .client(okHttpClient)                .addConverterFactory(GsonConverterFactory.create())                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())                .build();        return retrofit.create(clazz);    }

public static ServiceApi getShopAPI() {        if (serviceApi == null) {            synchronized (RetrofitHelper.class) {                if (serviceApi == null) {                    serviceApi = createAPI(ServiceApi.class, net.A);                }            }        }        return serviceApi;    }

}

*接口public interface ServiceApi {    @GET(net.B)    Flowable<UserBean> add();}*封装bean类

public class UserBean {

/**     * code : 200     * msg : success     * newslist : [{"ctime":"2016-12-04 13:00","title":"格林：理解科尔吸食大麻 不过我从没吸过","description":"NBA新闻","picUrl":"http://www.51tyw.com/uploads/allimg/161204/1-161204120131.jpg","url":"http://www.51tyw.com/nba/2421.html"},{"ctime":"2016-12-04 00:00","title":"三分纪录延续！火箭队连续19场比赛命中10+三分球","description":"NBA新闻","picUrl":"http://www.51tyw.com/uploads/allimg/161203/1-161203233J3.jpg","url":"http://www.51tyw.com/nba/2417.html"},{"ctime":"2016-12-04 00:00","title":"詹姆斯谈三连败：是时候紧起来了 必须打得男人点","description":"NBA新闻","picUrl":"http://www.51tyw.com/uploads/allimg/161203/1-161203234010.jpg","url":"http://www.51tyw.com/nba/2418.html"},{"ctime":"2016-12-03 12:00","title":"骑士输赢都靠三分？那还要詹姆斯做什么？","description":"NBA新闻","picUrl":"http://www.51tyw.com/uploads/allimg/161203/1-161203104344.jpg","url":"http://www.51tyw.com/nba/2407.html"},{"ctime":"2016-12-03 00:00","title":"公牛vs骑士直播看点：詹伟兄弟对决","description":"NBA新闻","picUrl":"http://www.51tyw.com/uploads/allimg/161202/1-161202221205.jpg","url":"http://www.51tyw.com/nba/2395.html"},{"ctime":"2016-12-02 22:00","title":"火箭和勇士联手创NBA三分纪录","description":"NBA新闻","picUrl":"http://www.51tyw.com/uploads/allimg/161202/1-161202214212.jpg","url":"http://www.51tyw.com/nba/2392.html"},{"ctime":"2016-12-02 22:00","title":"巴克利：勇士打得像女式篮球，太软了！","description":"NBA新闻","picUrl":"http://www.51tyw.com/uploads/allimg/161202/1-161202215032.jpg","url":"http://www.51tyw.com/nba/2394.html"},{"ctime":"2016-12-02 20:00","title":"詹姆斯完成月最佳球员4连霸的壮举！","description":"NBA新闻","picUrl":"http://www.51tyw.com/uploads/allimg/161202/1-1612021PI0.jpg","url":"http://www.51tyw.com/nba/2388.html"},{"ctime":"2016-12-01 00:00","title":"威少再下三双战书！詹皇会不会先认怂？","description":"NBA新闻","picUrl":"http://www.51tyw.com/uploads/allimg/161128/1-16112Q13251.jpg","url":"http://www.51tyw.com/nba/2374.html"},{"ctime":"2016-12-01 00:00","title":"骑士这样的防守想夺冠？也许卫冕只是空谈！","description":"NBA新闻","picUrl":"http://www.51tyw.com/uploads/allimg/161130/1-161130222229.jpg","url":"http://www.51tyw.com/nba/2375.html"}]     */

private int code;    private String msg;    private List<NewslistBean> newslist;

public int getCode() {        return code;    }

public void setCode(int code) {        this.code = code;    }

public String getMsg() {        return msg;    }

public void setMsg(String msg) {        this.msg = msg;    }

public List<NewslistBean> getNewslist() {        return newslist;    }

public void setNewslist(List<NewslistBean> newslist) {        this.newslist = newslist;    }

public static class NewslistBean {        /**         * ctime : 2016-12-04 13:00         * title : 格林：理解科尔吸食大麻 不过我从没吸过         * description : NBA新闻         * picUrl : http://www.51tyw.com/uploads/allimg/161204/1-161204120131.jpg         * url : http://www.51tyw.com/nba/2421.html         */

private String ctime;        private String title;        private String description;        private String picUrl;        private String url;

public String getCtime() {            return ctime;        }

public void setCtime(String ctime) {            this.ctime = ctime;        }

public String getTitle() {            return title;        }

public void setTitle(String title) {            this.title = title;        }

public String getDescription() {            return description;        }

public void setDescription(String description) {            this.description = description;        }

public String getPicUrl() {            return picUrl;        }

public void setPicUrl(String picUrl) {            this.picUrl = picUrl;        }

public String getUrl() {            return url;        }

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