MVP个人理解

从Google推出官方MVP架构demo到现在大概有一年多的时间了，半年前大概在所有的Android技术社区都有提到MVP架构，现在关于MVP架构的话题似乎没有以前那么多了，可能是因为大家都已经能够熟练的使用MVP了。在这里先炒碗闲饭，提供了一个快速生成MVP模式的插件。地址

对应的model层

public interface ApiService {
    @GET("type/1/p/1")
    Observable<Bean> geturl();
}

//定义接

public interface IModel {
    void geturl(String url);

}

继承接口

public class WLmodel implements IModel{
    private  OnFinish onFinish ;

    public interface  OnFinish{
        void OnFinishListener(List<Bean.DataBean> data);
    }

    public void setOnFinish(OnFinish onFinish) {
        this.onFinish = onFinish;
    }

    @Override
    public void geturl(String url) {

	OkHttpClient mClient = new OkHttpClient.Builder()
        .addInterceptor(new LoggingInterceptor())//应用拦截器
        //.addNetworkInterceptor(new LoggingInterceptor())//网络拦截器
        .build();

		Retrofit retrofit = new Retrofit.Builder().

                baseUrl(url).addConverterFactory(GsonConverterFactory.create())
                .addCallAdapterFactory(RxJavaCallAdapterFactory.create()).build();
        ApiService apiService  = retrofit.create(ApiService.class);
        Observable<Bean> homes = apiService.geturl();
        homes.subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Observer<Bean>() {
                    @Override
                    public void onCompleted() {

                    }

                    @Override
                    public void onError(Throwable e) {

                    }

                    @Override
                    public void onNext(Bean bean) {
                        List<Bean.DataBean> data = bean.getData();
                        onFinish.OnFinishListener(data);
                    }
                });
    }

}

对应presenter层的东西

//Api

public class API {
    public static final String url = "http://api.expoon.com/AppNews/getNewsList/";
}

创建类

WLPresenter

public class WLPresenter implements WLmodel.OnFinish {
    private final  IView wlview;
    private final  WLmodel wLmodel;

    public WLPresenter(IView wlview) {
        this.wlview = wlview;
        this.wLmodel = new WLmodel() ;

    }

    public void getWL(String url){
        wLmodel.setOnFinish(this);
        wLmodel.geturl(url);

    }
    @Override
    public void OnFinishListener(List<Bean.DataBean> list) {
        wlview.getNews(list);
    }
}

view层

public interface IView {
    void getNews(List<Bean.DataBean> list);
}

对应的适配器

[html]view plain copy 
    
 public class HomeAdaper extends RecyclerView.Adapter {  
     Context context;  
     List<News.DataBean> list;  
   
     public HomeAdaper(Context context, List<News.DataBean> list) {  
         this.context = context;  
         this.list = list;  
     }  
   
     @Override  
     public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {  
   
   
         MyViewHolder holder = new MyViewHolder(LayoutInflater.from(  
                 context).inflate(R.layout.listview, parent,  
                 false));  
         return holder;  
   
   
     }  
   
     @Override  
     public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {  
   
   
         MyViewHolder holder1 = (MyViewHolder) holder;  
         holder1.tv.setText(list.get(position).getNews_title());  
   
   
         holder1.draweeView1.setImageURI(list.get(position).getPic_url());  
         //创建DraweeController  
         DraweeController controller = Fresco.newDraweeControllerBuilder()  
                 //重试之后要加载的图片URI地址  
                 .setUri(list.get(position).getPic_url())  
                 //设置点击重试是否开启  
                 .setTapToRetryEnabled(true)  
                 //动画播放  
                 .setAutoPlayAnimations(true)  
                 //设置旧的Controller  
                 .setOldController(holder1.draweeView1.getController())  
                 //构建  
                 .build();  
         //设置DraweeController  
         holder1.draweeView1.setController(controller);  
   
   
     }  
   
   
     @Override  
     public int getItemCount() {  
         return list.size();  
     }  
   
     class MyViewHolder extends RecyclerView.ViewHolder {  
   
   
         SimpleDraweeView draweeView1;  
         TextView tv;  
   
         public MyViewHolder(View view) {  
             super(view);  
             tv = (TextView) view.findViewById(R.id.tv);  
             draweeView1 = (SimpleDraweeView) view.findViewById(R.id.img);  
   
         }  
   
   
     }  
 }  

7. 所谓的mvp，即是（model-处理业务逻辑（主要是数据读写，或者与后台通信（其实也是读写数据）），view-处理ui控件，presenter-主导器，操作model和view）

8. 源码地址

http://download.csdn.net/detail/knxw0001/7983807

对应的主页面解析数据和接口回调

public class MainActivity extends AppCompatActivity implements IView{

    private ListView lv;
    private WLPresenter wlPresenter ;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
    }

    private void initView() {
        lv = (ListView) findViewById(R.id.lv);
        wlPresenter = new WLPresenter(this) ;
        wlPresenter.getWL(API.url);
    }

    @Override
    public void getNews(List<Bean.DataBean> list) {
        MyAdapter ma = new MyAdapter(this ,list) ;
        lv.setAdapter(ma);
    }
}

//下面就是相关的布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.bwie.mvpwangluo.MainActivity">

    <ListView
        android:id="@+id/lv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></ListView>

</LinearLayout>

对应的listview布局解析的文字和图片对用的

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <TextView
        android:id="@+id/tv"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</LinearLayout>

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