MVP(Retrofit+RXJava)实现网络请求

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Model 模型 view 视图 presenter层（桥梁）

每一层都有一个接口来下面直接上代码：

=========================================================================

view 层

MainActivity  :

[java] view plain copy 
import android.os.Bundle;  
import android.support.v7.app.AppCompatActivity;  
import android.support.v7.widget.LinearLayoutManager;  
import android.support.v7.widget.RecyclerView;  
  
import com.facebook.drawee.backends.pipeline.Fresco;  
  
import java.util.ArrayList;  
import java.util.HashMap;  
import java.util.List;  
  
import bwie.com.day_rikao_1207.adparer.RecyclerAA;  
import bwie.com.day_rikao_1207.bean.Newslist;  
import bwie.com.day_rikao_1207.presenter.DataPresenter;  
import bwie.com.day_rikao_1207.view.IView;  
  
import static android.widget.LinearLayout.VERTICAL;  
  
public class MainActivity extends AppCompatActivity implements IView{  
  
    private RecyclerView recy;  
    private DataPresenter dataPresenter;  
    private  List<Newslist> list=new ArrayList<>();  
  
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        Fresco.initialize(this);  
        setContentView(R.layout.activity_main);  
  
        recy = (RecyclerView) findViewById(R.id.recy);  
  
        HashMap<String,String> map = new HashMap<>();  
        //http://api.tianapi.com/nba/?key=71e58b5b2f930eaf1f937407acde08fe&num=10  
        map.put("key","71e58b5b2f930eaf1f937407acde08fe");  
        map.put("num","10");  
        dataPresenter = new DataPresenter();  
        dataPresenter.acceachView(this);  
        dataPresenter.getData(map);  
  
    }  
  
    @Override  
    public void success(Object o) {  
        if (o instanceof List){  
            List<Newslist> news= (List<Newslist>) o;  
  
            list.addAll(news);  
            RecyclerAA recyclerAA = new RecyclerAA(this,list);  
            recy.setAdapter(recyclerAA);  
            LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this,VERTICAL,false );  
            recy.setLayoutManager(linearLayoutManager);  
            recyclerAA.notifyDataSetChanged();  
        }  
  
    }  
  
    @Override  
    public void Failes(Exception e) {  
  
    }  
  
    //避免内存泄漏  
    @Override  
    protected void onDestroy() {  
        super.onDestroy();  
        if (dataPresenter!=null){  
            dataPresenter.detechView();  
        }  
    }  
}  
view接口:

[java] view plain copy 
public interface IView {  
  
    void success(Object o);  
    void Failes(Exception e);  
}  
============================================================

Presenter 层：

[java] view plain copy 
import java.util.List;  
import java.util.Map;  
  
import bwie.com.day_rikao_1207.bean.JsonRootBean;  
import bwie.com.day_rikao_1207.bean.Newslist;  
import bwie.com.day_rikao_1207.model.DataModel;  
import bwie.com.day_rikao_1207.model.IModel;  
import bwie.com.day_rikao_1207.view.IView;  
import io.reactivex.Flowable;  
import io.reactivex.android.schedulers.AndroidSchedulers;  
import io.reactivex.schedulers.Schedulers;  
import io.reactivex.subscribers.DisposableSubscriber;  
  
/** 
 * Created by 迷人的脚毛！！ on 2017/12/7. 
 */  
  
public class DataPresenter implements BasePresenter{  
  
    private IView iv;  
    private DisposableSubscriber<JsonRootBean<List<Newslist>>> subscriber;  
  
    public void acceachView(IView iv){  
        this.iv=iv;  
    }  
  
    public void detechView(){  
        if (iv!=null){  
            iv=null;  
        }  
        if (subscriber!=null){  
            if (!subscriber.isDisposed()){  
                subscriber.dispose();  
            }  
        }  
    }  
  
    @Override  
    public void getData(Map<String, String> map) {  
  
        IModel model= new DataModel(this);  
        model.getData(map);  
    }  
  
    public void getDatas(Flowable<JsonRootBean<List<Newslist>>> flowable){  
        subscriber = flowable.subscribeOn(Schedulers.io())  
                .observeOn(AndroidSchedulers.mainThread())  
                .subscribeWith(new DisposableSubscriber<JsonRootBean<List<Newslist>>>() {  
                    //普通事件  
                    @Override  
                    public void onNext(JsonRootBean<List<Newslist>> listJsonRootBean) {  
  
                        if (listJsonRootBean != null) {  
                            List<Newslist> newslist = listJsonRootBean.getNewslist();  
                            if (newslist != null) {  
                                iv.success(newslist);  
                            }  
                        }  
  
                    }  
  
                    //异常事件  
                    @Override  
                    public void onError(Throwable t) {  
                        iv.Failes(new Exception(t));  
  
                    }  
  
                    @Override  
                    public void onComplete() {  
  
                    }  
                });  
  
  
    }  
}  
p层接口：

[java] view plain copy 
public interface BasePresenter{  
    void getData(Map<String,String> map);  
  
}  
===========================================================

model层：

[java] view plain copy 
import io.reactivex.Flowable;  
  
/** 
 * Created by 迷人的脚毛！！ on 2017/12/7. 
 */  
  
public class DataModel implements IModel{  
  
    private DataPresenter presenter;  
  
    public DataModel(DataPresenter presenter) {  
        this.presenter = presenter;  
    }  
  
    @Override  
    public void getData(Map<String, String> map) {  
  
        Flowable<JsonRootBean<List<Newslist>>> flowable = RetrofitUtil.getInstant().getApiService().getData(map);  
  
        presenter.getDatas(flowable);  
    }  
}  
IModel 接口：
[java] view plain copy 
public interface IModel {  
  
    void getData(Map<String,String> map);  
  
}  
========================================================================

[java] view plain copy 
public interface ApiService {  
  
    //http://api.tianapi.com/nba/?key=71e58b5b2f930eaf1f937407acde08fe&num=10  
    @GET("nba/")  
    Flowable<JsonRootBean<List<Newslist>>> getData(@QueryMap Map<String,String> map);  
}

RetrofitUtil   工具类：
[java] view plain copy 
import retrofit2.Retrofit;  
import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory;  
import retrofit2.converter.gson.GsonConverterFactory;  
   
  
public class RetrofitUtil {  
    private static volatile RetrofitUtil instant;  
    private ApiService apiService;  
  
  
    private RetrofitUtil() {  
        Retrofit retrofit = new Retrofit.Builder()  
                .addConverterFactory(GsonConverterFactory.create())  
                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())  
                .baseUrl("http://api.tianapi.com/")  
                .build();  
  
        apiService = retrofit.create(ApiService.class);  
    }  
  
    public static RetrofitUtil getInstant(){  
        if (null==instant){  
            synchronized (RetrofitUtil.class){  
                if (instant==null){  
                    instant=new RetrofitUtil();  
                }  
            }  
        }  
        return instant;  
  
    }  
    public ApiService getApiService(){  
        return apiService;  
    }  
}

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