MVP+okhttp接口解析RecyclerView展示

LoginActivity是我在MainActivity做的跳转这里不用管

它用到的依赖：

mplementation 'com.squareup.okhttp3:okhttp:3.6.0'
implementation 'com.squareup.okio:okio:1.11.0'
implementation 'com.google.code.gson:gson:2.8.5'
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:recyclerview-v7:28.0.0'
implementation 'com.github.bumptech.glide:glide:4.9.0'

它用到的权限：

先看MVP的View层接口

public interface IView {

    //获取数据显示
    public void getView(Object data);
}

看MVP的Psenter层接口

public interface Ipresenter {
    //接收对象
    void getPreData();
   //解绑对象
    void attchView(IView iView);
    void Detchview();
}

看MVP的Model层接口

public interface Model {
  public void getDate(MCallBack mCallBack);

  interface  MCallBack{
      //成功
      public void onSuccess(Object data);
      //失败
      public void onFail(Object error);
  }

}

看MainAcitivity的代码

public class MainActivity extends AppCompatActivity implements IView{
    private LoginPresenterImpI presenterImpI;
    private RecyclerView recy_view;
    private jsonBean jsonBean;
    private ShopAdapter adapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        presenterImpI = new LoginPresenterImpI();
        presenterImpI.attchView(this);
        presenterImpI.getPreData();
        initView();
    }
    private void initView(){
        recy_view = findViewById(R.id.recy_view);
        recy_view.setLayoutManager(new LinearLayoutManager(this));
    }

    @Override
    public void getView(Object data) {
        if (data!=null){
            jsonBean=(com.bawei.moni.bean.jsonBean) data;
            adapter = new ShopAdapter(MainActivity.this, jsonBean);
            recy_view.setAdapter(adapter);
            adapter.setRecyclerviewListener(new ShopAdapter.RecyclerviewListenner(){
                @Override
                public void callBack(int id) {
                    Intent intent = new Intent(MainActivity.this, LoginActivity.class);
                    intent.putExtra("id",id);
                    startActivity(intent);
                }
            });
        }
    }
}

MainAcitivity展示用到Adapter，这是Adapter类

public class ShopAdapter extends RecyclerView.Adapter {
    Context context;
    jsonBean jsonbean;
    public ShopAdapter(Context context, jsonBean jsonbean) {
        this.context = context;
        this.jsonbean = jsonbean;
    }


    @NonNull
    @Override
    public ShopAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
       View view = LayoutInflater.from(context).inflate(R.layout.item,viewGroup,false);
        return new ViewHolder(view);

    }

    @Override
    public void onBindViewHolder(@NonNull ShopAdapter.ViewHolder viewHolder, int i) {
        Glide.with(context).load(jsonbean.getResult().getPzsh().getCommodityList()
        .get(i).getMasterPic()).into(viewHolder.iamge);
        viewHolder.text.setText(jsonbean.getResult().getPzsh().getCommodityList().get(i).getCommodityName());
        viewHolder.itemView.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v) {
                recyclerviewListenner.callBack(v.getId());
            }
        });
    }

    @Override
    public int getItemCount() {
        return jsonbean.getResult().getPzsh().getCommodityList().size();
    }
    //初始化视图
    public class ViewHolder extends RecyclerView.ViewHolder{

        private final TextView text;
        private final ImageView iamge;

        public ViewHolder(@NonNull View itemView) {
            super(itemView);
            iamge = itemView.findViewById(R.id.image_view);
            text = itemView.findViewById(R.id.text_view);

        }
    }
    RecyclerviewListenner recyclerviewListenner;

    public void setRecyclerviewListener(RecyclerviewListenner recyclerviewListenner) {
        this.recyclerviewListenner = recyclerviewListenner;
    }

    public interface RecyclerviewListenner{
         void callBack(int id);
    }

}

MainAcitivity实例到了P层类，这是P层类

public class LoginPresenterImpI implements  Ipresenter{

    //m层的接口
    private Model model;
    MainActivity mainActivity;
    private SoftReference modelSoftReference;

    @Override
    public void getPreData() {
        model.getDate(new Model.MCallBack(){
            @Override
            public void onSuccess(Object data) {
                mainActivity.getView(data);
            }

            @Override
            public void onFail(Object error) {

            }
        });
    }


    @Override
    public void attchView(IView iView) {
        this.mainActivity = (MainActivity) iView;
        //m层的类
        model = new loginModelImpI();
        modelSoftReference = new SoftReference(model);

    }

        @Override
        public void Detchview () {

        }

}

P层类实例到了M层类，这是M层类

public class loginModelImpI implements Model {
    //请求的接口
    String Base_url="http://172.17.8.100/small/commodity/v1/commodityList";

    @Override
    public void getDate(final MCallBack mCallBack) {
        OkHttp.getInstance().doGet(Base_url, jsonBean.class,new OkHttp.NetCallBack(){
            @Override
            public void LoadSuccess(Object obj) {
                mCallBack.onSuccess(obj);
            }

            @Override
            public void LoadFail() {

            }
        });
    }
}

M层类调用工具类的方法，这是工具类

public class OkHttp {
    private OkHttpClient client;
    private static volatile OkHttp instance;
    private Handler handler = new Handler();

    //创建拦截器
    private Interceptor getAppInterceptor()
    {
        Interceptor interceptor= new Interceptor() {
            @Override
            public Response intercept(Chain chain) throws IOException {

                Request request = chain.request();
                Log.e("++++++","拦截前");
                Response response = chain.proceed(request);
                Log.e("++++++","拦截后");
                return response;
            }
        };
        return interceptor;
    }
    //添加拦截器
     private OkHttp()
     {
         File file = new File(Environment.getExternalStorageDirectory(), "cache1");
         client = new OkHttpClient().newBuilder()
                 .readTimeout(3000,TimeUnit.SECONDS)
                 .connectTimeout(3000,TimeUnit.SECONDS)
                 .addInterceptor(getAppInterceptor())
                 .cache(new Cache(file,10*1024))
                 .build();
     }
     //创建单例
    public  static OkHttp getInstance()
    {
        if(instance == null)
        {
            synchronized (OkHttp.class)
            {
                if(null == instance)
                {
                    instance = new OkHttp();
                }
            }
        }
        return instance;
    }
    //封装doget方法
    public void doGet(String url, final Class clazz, final NetCallBack netCallBack)
    {
        // 2. 创建一个请求对象
        Request request = new Request.Builder()
                .get()
                .url(url)
                .build();
        //创建call对象
        Call call = client.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                String string = response.body().string();
                Gson gson = new Gson();
                final Object o = gson.fromJson(string, clazz);
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        netCallBack.LoadSuccess(o);
                    }
                });
            }
        });
    }
    //封装dopost请求
    public void doPost(String url, final Class clazz, String name,String pwd, final NetCallBack netCallBack)
    {
        //新建okhttp对象
        client = new OkHttpClient();
        /**
         * 通过体传值
         */
        FormBody build = new FormBody.Builder()
                .add("phone", name)
                .add("pwd", pwd)
                .build();
        Request request = new Request.Builder()
                .url(url)
                .post(build)
                .build();
        Call call = client.newCall(request);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                String string = response.body().string();
                Gson gson = new Gson();
                final Object o = gson.fromJson(string, clazz);
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        netCallBack.LoadSuccess(o);
                    }
                });
            }
        });
    }
    public interface NetCallBack{
    void LoadSuccess(Object obj);
    void LoadFail();
}
}

MainActivity布局

Adapter设置显示布局