MVP+Retrofit封装网络请求

//泛型类public class MessageBean<T> {    private String result;    private T data;    public String getResult() {        return result;    }    public void setResult(String result) {        this.result = result;    }    public T getData() {        return data;    }    public void setData(T data) {        this.data = data;    }}


//http
public interface ApiService {    @GET("93app/data.do")    Flowable<MessageBean<List<News>>> getNews(@QueryMap Map<String, String> map);}



public class RetrofitUtils {    private static volatile RetrofitUtils instance;    private ApiService apiService;    private RetrofitUtils() {        Retrofit retrofit = new Retrofit.Builder()                .addConverterFactory(GsonConverterFactory.create())                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())                .baseUrl("http://www.93.gov.cn/")                .build();        apiService = retrofit.create(ApiService.class);    }    public static RetrofitUtils getInstance() {        if (instance == null) {            synchronized (RetrofitUtils.class) {                if (null == instance) {                    instance = new RetrofitUtils();                }            }        }        return instance;    }    public ApiService getApiService() {        return apiService;    }}

//model
public interface IModel {    void getData(Map<String, String> map);}

public class NewsModel implements IModel {    private NewsPresenter presenter;    public NewsModel(NewsPresenter presenter){        this.presenter = presenter;    }    @Override    public void getData(Map<String, String> map) {        Flowable<MessageBean<List<News>>> flowable = RetrofitUtils.getInstance().getApiService()                .getNews(map);        presenter.getNews(flowable);    }}

//presenter
public interface BasePresenter {    void getData(Map<String, String> map);}

public class NewsPresenter implements BasePresenter {    private IView iv;    private DisposableSubscriber subscriber;    public void attachView(IView iv) {        this.iv = iv;    }    public void detachView() {        if (iv != null) {            iv = null;        }        if (subscriber != null) {            if (!subscriber.isDisposed()) {                subscriber.dispose();            }        }    }    @Override    public void getData(Map<String, String> map) {        IModel model = new NewsModel(this);        model.getData(map);    }    public void getNews(Flowable<MessageBean<List<News>>> flowable) {        subscriber = (DisposableSubscriber) flowable.subscribeOn(Schedulers.io())                .observeOn(AndroidSchedulers.mainThread())                .subscribeWith(new DisposableSubscriber<MessageBean<List<News>>>() {                    @Override                    public void onNext(MessageBean<List<News>> listMessageBean) {                        if (listMessageBean != null) {                            List<News> list = listMessageBean.getData();                            if (list != null) {                                iv.onSuccess(list);                            }                        }                    }                    @Override                    public void onError(Throwable t) {                        iv.onFailed(new Exception(t));                    }                    @Override                    public void onComplete() {                    }                });    }}

//view

public interface IView {    void onSuccess(Object o);    void onFailed(Exception e);}

public class MainActivity extends AppCompatActivity  implements IView {    private static final String TAG = "MainActivity";    private NewsPresenter presenter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        Map<String, String> map = new HashMap<>();        map.put("channelId", "0");        map.put("startNum", "0");        presenter = new NewsPresenter();        presenter.attachView(this);        presenter.getData(map);    }    @Override    public void onSuccess(Object o) {        if (o instanceof List) {            List<News> news = (List<News>) o;            Log.i(TAG, "onSuccess: " + news.size());        }    }    @Override    public void onFailed(Exception e) {        Log.e(TAG, "onFailed: " + e.getMessage());    }    @Override    protected void onDestroy() {        super.onDestroy();        if (presenter != null) {            presenter.detachView();        }    }}