MVP架构分包+OkHttp网络请求+RecyclerView展示数据

1.首先来看一看分包

先不白话那么多，来张效果图给段友们压压惊：

我们在这之前一定要做好准备工作：

a.添加联网权限：

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

b.依赖：（带libs的依赖需要自己导入jar包，也可以自己在网上搜直接添加）
compile files('libs/glide-3.7.0.jar')
compile files('libs/gson-2.2.4.jar')
compile files('libs/okhttp-3.9.0.jar')
compile files('libs/okio-1.13.0.jar')
compile 'com.jcodecraeer:xrecyclerview:1.3.2'

2.首先来定义一个Bean实体类

public class InfoDatas {


    public int code;
    public String msg;
    public DataEntity data;

    public static class DataEntity {
        

        public ActivityInfoEntity activityInfo;
        public boolean creditRecived;
        public GoodsSpreeActivityEntity goodsSpreeActivity;
        public SecondAdEntity secondAd;
        public List<SubjectsEntity> subjects;
        public List<Ad1Entity> ad1;
        public List<Ad5Entity> ad5;
        public List<Ad8Entity> ad8;
        public List<DefaultGoodsListEntity> defaultGoodsList;

        public static class ActivityInfoEntity {
           

            public String activityAreaDisplay;
            public List<ActivityInfoListEntity> activityInfoList;

            public static class ActivityInfoListEntity {
                
                public String id;
                public String activityImg;
                public String activityType;
                public String activityData;
                public String activityDataDetail;
                public String activityAreaDisplay;
                public String countDownEnable;
                public String remark;
                public int sort;
            }
        }

        public static class GoodsSpreeActivityEntity {
            

            public String id;
            public String name;
            public String startDate;
            public String endDate;
            public String status;
            public String startSeconds;
            public String endSeconds;
            public String isChecked;
            public List<GoodsListEntity> goodsList;

            public static class GoodsListEntity {
               
                public String id;
                public String goodsSpreeId;
                public String goodsId;
                public String goodsName;
                public String goodsImg;
                public double marketPrice;
                public double activityPrice;
                public int salesRatio;
                public int stockNumber;
                public int releaseNumber;
            }
        }

        public static class SecondAdEntity {
            
            public String id;
            public String image;
            public int ad_type;
            public int sort;
            public int position;
            public int enabled;
            public String ad_type_dynamic;
            public String ad_type_dynamic_data;
            public String ad_type_dynamic_detail;
            public GoodsEntity goods;

            public static class GoodsEntity {
            
                public int collect_count;
                public boolean reservable;
                public int restriction;
                public int restrict_purchase_num;
                public boolean is_coupon_allowed;
                public int allocated_stock;
                public int is_gift;
            }
        }

        public static class SubjectsEntity {
            

            public String id;
            public String title;
            public String detail;
            public String image;
            public String start_time;
            public String end_time;
            public int show_number;
            public String state;
            public int sort;
            public String descImage;
            public String template;
            public String url;
            public String wapUrl;
            public List<GoodsListEntity> goodsList;
            public List<String> goodsIdsList;
            public List<GoodsRelationListEntity> goodsRelationList;

            public static class GoodsListEntity {
                

                public String id;
                public String goods_name;
                public double shop_price;
                public double market_price;
                public String goods_img;
                public boolean reservable;
                public String efficacy;
                public int stock_number;
                public int restrict_purchase_num;
                public String goodsName;
                public String goodsImage;
                public String description;
            }

            public static class GoodsRelationListEntity {
                

                public String id;
                public String subject_id;
                public String goods_id;
                public String goodsName;
                public String goodsImage;
                public String description;
            }
        }

        public static class Ad1Entity {
           

            public String id;
            public String createtime;
            public String lastupdatetime;
            public String image;
            public int ad_type;
            public int sort;
            public int position;
            public int enabled;
            public String createuser;
            public String lastupdateuser;
            public String ad_type_dynamic;
            public String ad_type_dynamic_data;
            public String ad_type_dynamic_detail;
            public String show_channel;
            public String title;
            public String channelType;
        }

        public static class Ad5Entity {
           
            public String id;
            public String image;
            public int ad_type;
            public int sort;
            public int position;
            public int enabled;
            public String ad_type_dynamic;
            public String ad_type_dynamic_data;
            public String ad_type_dynamic_detail;
            public String show_channel;
            public String title;
        }

        public static class Ad8Entity {
           
            public String id;
            public String image;
            public int ad_type;
            public int sort;
            public int position;
            public int enabled;
            public String description;
            public String ad_type_dynamic;
            public String ad_type_dynamic_data;
            public String ad_type_dynamic_detail;
            public String show_channel;
            public String title;
            public GoodsEntity goods;

            public static class GoodsEntity {
               
                public int collect_count;
                public boolean reservable;
                public int restriction;
                public int restrict_purchase_num;
                public boolean is_coupon_allowed;
                public int allocated_stock;
                public int is_gift;
            }
        }

        public static class DefaultGoodsListEntity {
            
            public String id;
            public String goods_name;
            public double shop_price;
            public double market_price;
            public String goods_img;
            public boolean reservable;
            public String efficacy;
            public int stock_number;
            public int restrict_purchase_num;
        }
    }
}

3.我们在看View层的IRecyView

public interface IRecyView {

    void showRecy(InfoDatas infoDatas);

}

4.我们在看Model层的IRecyModel

public interface IRecyModel {
    void recy(Callback callback);
}

5.我们再看IRecyModel接口的实现类

public class RecyModel implements IRecyModel {
    @Override
    public void recy(Callback callback) {
        OkHttpUtils.getInstance().doGet("http://m.yunifang.com/yunifang/mobile/home", callback);
    }
}

6.好了 到了Presenter层

public class RecyPresenter {

    private IRecyView view;
    private IRecyModel model;

    public RecyPresenter(IRecyView view) {
        this.view = view;
        model = new RecyModel();
    }

    public void showRecy(){
        model.recy(new OnUiCallback() {

            private InfoDatas infoDatas;

            @Override
            public void onFailed(Call call, IOException e) {

            }

            @Override
            public void onSuccess(String result) throws IOException {
                Log.i("ss",result);
                Gson gson = new Gson();
               infoDatas = gson.fromJson(result, InfoDatas.class);
               view.showRecy(infoDatas);
            }
        });
    }

    //解绑
    public void onDestory(){
        view = null;
    }

}

7.OkHttpUtils

public class OkHttpUtils {
    private Handler handler = new Handler();
    public Handler getHandler(){
        return handler;
    }
    //单例
    private static OkHttpUtils okHttpUtils = new OkHttpUtils();
    private OkHttpUtils(){};
    public static OkHttpUtils getInstance(){
        return okHttpUtils;
    }

    private OkHttpClient client;
    private void initOkHttpClient(){
        if(client == null){
            client = new OkHttpClient.Builder().build();
        }
    }

    //公用的get请求方法  完成的功能不确定
    public void doGet(String url, Callback callback){
        initOkHttpClient();
        Request request = new Request.Builder().addHeader("User-Agent","").url(url).build();
        Call call = client.newCall(request);
        call.enqueue(callback);
    }
	
}

8.OnUiCallback

public abstract class OnUiCallback implements Callback{
    private Handler handler = OkHttpUtils.getInstance().getHandler();
    public abstract void onFailed(Call call, IOException e);
    public abstract void onSuccess(String result) throws IOException;

    @Override
    public void onFailure(final Call call, final IOException e) {
        //该方式  存在问题  网络请求也跑到了主线程   待解决
        //该方法就是把  线程post到handler所在的线程
        handler.post(new Runnable() {
            @Override
            public void run() {
                onFailed(call, e);
            }
        });

    }

    @Override
    public void onResponse(final Call call, final Response response) throws IOException {
        final String result = response.body().string();
        //该方式  存在问题  网络请求也跑到了主线程   待解决
        handler.post(new Runnable() {
            @Override
            public void run() {
                try {
                    onSuccess(result);
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        });
    }
}

9.适配器Adapter

public class MyRecyAdapter extends RecyclerView.Adapter<MyRecyAdapter.MyViewHolder> {

    private Context context;
    private InfoDatas infoDatas;

    public MyRecyAdapter(Context context, InfoDatas infoDatas) {
        this.context = context;
        this.infoDatas = infoDatas;
    }

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

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        Glide.with(context).load(infoDatas.data.defaultGoodsList.get(position).goods_img).into(holder.iv_item);
        holder.tv_item.setText(infoDatas.data.defaultGoodsList.get(position).goods_name);
    }

    @Override
    public int getItemCount() {
        return infoDatas.data.defaultGoodsList.size();
    }

    static class MyViewHolder extends RecyclerView.ViewHolder{

        ImageView iv_item;
        TextView tv_item;

        public MyViewHolder(View itemView) {
            super(itemView);
            iv_item = itemView.findViewById(R.id.iv_item);
            tv_item = itemView.findViewById(R.id.tv_item);
        }
    }
}

10.RecyActivity

public class RecyActivity extends AppCompatActivity implements IRecyView{

    private XRecyclerView xrv;
    private RecyPresenter presenter;

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

        initView();
        presenter = new RecyPresenter(this);
        presenter.showRecy();

    }

    private void initView() {
        xrv = (XRecyclerView) findViewById(R.id.xrv);
        LinearLayoutManager manager = new LinearLayoutManager(this);
        manager.setOrientation(LinearLayoutManager.VERTICAL);
        xrv.setLayoutManager(manager);
        //下面是加载更多的方法
    }

    @Override
    public void showRecy(InfoDatas infoDatas) {
        MyRecyAdapter myRecyAdapter = new MyRecyAdapter(this, infoDatas);
        xrv.setAdapter(myRecyAdapter);
    }
}

11.布局文件

①：activity_recy.xml

<?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.example.mvp2.activity.RecyActivity">

    <com.jcodecraeer.xrecyclerview.XRecyclerView
        android:id="@+id/xrv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></com.jcodecraeer.xrecyclerview.XRecyclerView>

</LinearLayout>

②：recy_item.xml

<?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="50dp"
    android:orientation="horizontal">

    <ImageView
        android:id="@+id/iv_item"
        android:layout_width="50dp"
        android:layout_height="match_parent" />

    <TextView
        android:id="@+id/tv_item"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="我是文本"
        android:textSize="20sp"/>
</LinearLayout>