MVP+OK+Xrecyclerview

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原创最新推荐文章于 2026-05-28 11:28:47 发布 308 阅读 AI 写同款· GEO 优化 ›

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用到的依赖

implementation 'com.squareup.okhttp3:okhttp:3.11.0'
implementation 'com.google.code.gson:gson:2.8.5'
implementation 'com.android.support:recyclerview-v7:28.0.0-alpha3'
implementation('com.jcodecraeer:xrecyclerview:1.5.9') {
    exclude group: 'com.android.support'
}
implementation files('libs/universal-image-loader-1.9.5.jar')

封装OK

public class OK {

    private static OK ok;

    private static OkHttpClient client;

    private static Handler handler;

    protected static Handler getHandler() {
        return handler;
    }

    private OK() {
        client = new OkHttpClient.Builder()
                //TODO 拦截器，打印日志
                .build();

        handler = new Handler();
    }

    /**
     * 获得单例
     *
     * @return
     */
    public static OK getOk() {
        if (ok == null) {
            synchronized (OK.class) {
                if (ok == null) {
                    ok = new OK();
                }
            }
        }
        return ok;
    }

    /**
     * GET方法
     */
    public void doGet(String url, Callback callback) {
        //组装请求
        Request request = new Request.Builder()
                .url(url)
                .build();

        //初始化调用类
        Call call = client.newCall(request);

        //加入请求队列，回调结果
        call.enqueue(callback);

    }

    /**
     * POST方法
     */
    public void doPost() {

    }

}

封装的OkCallback

public abstract class OkCallback implements Callback{

    public abstract void onUI(String json);//更新UI
    public abstract void onFailed(String json);//返回错误信息

    @Override
    public void onFailure(Call call,final IOException e) {
        OK.getHandler().post(new Runnable() {
            @Override
            public void run() {
                onFailed(e.getMessage());
            }
        });
    }

    @Override
    public void onResponse(Call call, Response response) throws IOException {
        final String json=response.body().string();//注意
        OK.getHandler().post(new Runnable() {
            @Override
            public void run() {
                onUI(json);
            }
        });

    }
}

1.Model

1》bean类

public class Shop {


        public double bargainPrice;
        public String createtime;
        public String detailUrl;
        public String images;
        public int itemtype;
        public int pid;
        public String price;
        public int pscid;
        public int salenum;
        public int sellerid;
        public String subhead;
        public String title;

}

2》Data类

public class ShopData {
    public int stutas;
    public String message;
    public List<Shop> data;
}

3》ITask类接口（定义请求数据接口）

public interface ITask {
    public void getShopList(String url, OkCallback callback);
 

}

4》Task实现ITask方法

public class Task implements ITask{
    @Override
    public void getShopList(String url, OkCallback callback) {
        OK.getOk().doGet(url,callback);
    }
}

2。Presenter层

1》基类

public interface BasePre {
    void onDestroy();
}

2》p层的接口

public interface IPresenter extends BasePre{
    public void getData(String key,int page);
}

3》创建P层类实现P层的接口

public class MyPresenter implements IPresenter {
    ITask task;
    IView view;

    public MyPresenter(SecondActivity activity){
        task=new Task();
        view=activity;
    }

    @Override
    public void getData(String key,int page) {
        //拼接字符串
        String keyword = URLEncoder.encode(key);//记得中文编码
        String url = "http://www.zhaoapi.cn/product/searchProducts?keywords=" + keyword + "&page=" + page + "&sort=0";

        task.getShopList(url, new OkCallback() {
            @Override
            public void onUI(String json) {
                Gson gson=new Gson();
                ShopData shopData = gson.fromJson(json, ShopData.class);
                view.showData(shopData.data);
            }

            @Override
            public void onFailed(String json) {

            }
        });
    }


    @Override
    public void onDestroy() {
        //销毁视图
        view=null;
    }

}

3.View层

1》

public interface IView  {
    void showData(List<Shop> shops);
}

2》适配器

public class ShopAdapter extends RecyclerView.Adapter<ShopAdapter.ShopHolder> {
    private Context context;
    private List<Shop> list;
    private OnItemClickListener onItemClickListener;

    public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
        this.onItemClickListener = onItemClickListener;
    }

    public ShopAdapter(Context context) {
        this.context = context;
        list=new ArrayList<>();
    }


    public void clearData(){
        this.list.clear();
    }

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

    @Override
    public void onBindViewHolder(@NonNull ShopHolder shopHolder, int i) {
        final Shop shop=list.get(i);
        String imgUrl= shop.images.split("\\|")[0];
        ImageLoader.getInstance().displayImage(imgUrl,shopHolder.shop_img, App.getOptions());
        shopHolder.shop_name.setText(shop.title);
        shopHolder.shop_price.setText(shop.price+"");
        shopHolder.shop_createtime.setText(shop.createtime);
        shopHolder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (onItemClickListener!=null){
                    onItemClickListener.ItemClickListener(shop);
                }
            }
        });
    }

    @Override
    public int getItemCount() {
        return list.size();
    }

    public void addData(List<Shop> shops) {
        this.list.addAll(shops);
        notifyDataSetChanged();
    }

    class ShopHolder extends RecyclerView.ViewHolder{
        ImageView shop_img;
        TextView shop_name,shop_price,shop_createtime;
         public ShopHolder(@NonNull View itemView) {
             super(itemView);
             shop_img=itemView.findViewById(R.id.shop_img);
             shop_name=itemView.findViewById(R.id.shop_name);
             shop_price=itemView.findViewById(R.id.shop_price);
             shop_createtime=itemView.findViewById(R.id.shop_createtime);
         }
     }

     public interface OnItemClickListener{
        void ItemClickListener(Shop shop);
     }
}

4.xml

主的xml

<RelativeLayout 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"
    tools:context=".SecondActivity">

    <ImageView
        android:id="@+id/image_fan"
        android:layout_width="40dp"
        android:layout_height="35dp"
        android:src="@drawable/fanhui"
        android:layout_marginTop="8dp"
        />

    <EditText
        android:id="@+id/editText2"
        android:layout_width="330dp"
        android:layout_height="30dp"
        android:layout_alignTop="@+id/image_fan"
        android:layout_toEndOf="@+id/image_fan"
        android:background="@drawable/shape"
        android:hint="     搜索" />

    <ImageView
        android:id="@+id/image2"
        android:layout_width="35dp"
        android:layout_height="35dp"
        android:layout_alignLeft="@+id/editText2"
        android:layout_alignTop="@+id/editText2"
        android:layout_alignBottom="@+id/editText2"
        android:src="@drawable/sousuo" />

    <ImageView
        android:id="@+id/image_que"
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:layout_alignParentEnd="true"
        android:layout_marginTop="4dp"
        android:src="@drawable/qiehuan" />
    <com.jcodecraeer.xrecyclerview.XRecyclerView
        android:id="@+id/xrecyclerview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/editText2"
        android:layout_marginTop="5dp"
        ></com.jcodecraeer.xrecyclerview.XRecyclerView>
</RelativeLayout>

展示条目的xml

<ImageView
    android:id="@+id/shop_img"
    android:layout_width="100dp"
    android:layout_height="100dp"
    android:layout_alignParentStart="true"
    android:layout_alignParentTop="true"
    android:layout_marginStart="12dp"
    android:layout_marginTop="11dp"
    android:src="@drawable/ic_launcher_background" />

<TextView
    android:id="@+id/shop_name"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentStart="true"
    android:layout_alignTop="@+id/shop_img"
    android:layout_marginStart="123dp"
    android:hint="2"
    android:text="TextView"
    android:textColor="#000"
    android:textSize="18dp" />

<TextView
    android:id="@+id/textView2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_above="@+id/shop_createtime"
    android:layout_alignStart="@+id/shop_name"
    android:text="￥:"
    android:textColor="#FF0000"
    android:textSize="18dp" />

<TextView
    android:id="@+id/shop_price"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignTop="@+id/textView2"
    android:layout_centerHorizontal="true"
    android:text="TextView"
    android:textColor="#FF0000"
    android:textSize="18dp" />

<TextView
    android:id="@+id/shop_createtime"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBottom="@+id/shop_img"
    android:layout_alignStart="@+id/shop_name"
    android:text="TextView" />

5.activity

public class SecondActivity extends AppCompatActivity implements IView{
    IPresenter presenter;
    XRecyclerView xRecyclerView;
    ShopAdapter shopAdapter;
    private int page=0;
    private String key;
    EditText editText2;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);

        xRecyclerView=findViewById(R.id.xrecyclerview);
        editText2=findViewById(R.id.editText2);

        //获取传值
        key = getIntent().getStringExtra("key");
        editText2.setText(key);

        //初始化presenter
        presenter=new MyPresenter(this);
        presenter.getData(key,page);


        xRecyclerView.setLayoutManager(new LinearLayoutManager(this));
        xRecyclerView.addItemDecoration(new DividerItemDecoration(this, OrientationHelper.VERTICAL));
        shopAdapter=new ShopAdapter(this);
        xRecyclerView.setAdapter(shopAdapter);

        shopAdapter.setOnItemClickListener(new ShopAdapter.OnItemClickListener() {
            @Override
            public void ItemClickListener(Shop shop) {
                Intent it=new Intent(SecondActivity.this,InfoActivity.class);
                it.putExtra("pid",shop.pid);
                it.putExtra("title",shop.title);
                it.putExtra("price",shop.price);
                it.putExtra("img",shop.images);
                startActivity(it);
            }
        });

        xRecyclerView.setPullRefreshEnabled(true);
        xRecyclerView.setLoadingMoreEnabled(true);
        xRecyclerView.setLoadingListener(new XRecyclerView.LoadingListener() {
            @Override
            public void onRefresh() {
                page = 1;
                shopAdapter.clearData();
                presenter.getData(key,page);
            }

            @Override
            public void onLoadMore() {
                page++;
                presenter.getData(key,page);
            }
        });
    }

    @Override
    public void showData(List<Shop> shops) {
        shopAdapter.addData(shops);

        xRecyclerView.loadMoreComplete();
        xRecyclerView.refreshComplete();
    }

    @Override
    public void showCart(List<Seller> sellers) {

    }
}

6.点击条目跳到详情页面

依赖

implementation 'com.youth.banner:banner:1.4.10'  //最新版本
//导入Glide版本记得使用此版本
implementation 'com.github.bumptech.glide:glide:3.8.0'

1.xml

<com.youth.banner.Banner
    android:layout_margin="8dp"
    android:id="@+id/banner"
    android:layout_width="match_parent"
    android:layout_height="300dp"></com.youth.banner.Banner>

<TextView
    android:id="@+id/text_title"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentStart="true"
    android:layout_marginBottom="210dp"
    android:layout_marginStart="15dp"
    android:text="TextView"
    android:textColor="#000"
    android:textSize="20dp"
    tools:layout_editor_absoluteX="29dp"
    tools:layout_editor_absoluteY="284dp" />

<Button
    android:id="@+id/shoppingcar"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentEnd="true"
    android:layout_marginBottom="12dp"
    android:layout_marginEnd="16dp"
    android:background="#FF0000"
    android:text="加入购物车"
    android:textSize="16dp"
    tools:layout_editor_absoluteX="293dp"
    tools:layout_editor_absoluteY="514dp" />

<TextView
    android:id="@+id/text_price"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignStart="@+id/text_title"
    android:layout_marginBottom="171dp"
    android:text="TextView"
    android:textSize="18dp"
    android:textColor="#FF0000"
    />

2.activity

public class InfoActivity extends AppCompatActivity {
    Button shoppingcar;
    TextView text_title,text_price;
    Banner banner;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_info);

        text_title=findViewById(R.id.text_title);
        text_price=findViewById(R.id.text_price);
        shoppingcar=findViewById(R.id.shoppingcar);
        banner=findViewById(R.id.banner);

        String title = getIntent().getStringExtra("title");
        String price = getIntent().getStringExtra("price");
        text_title.setText(title);
        text_price.setText(price);

        shoppingcar.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent it=new Intent(InfoActivity.this,ShoppingCarActivity.class);
                startActivity(it);
            }
        });

        String img = getIntent().getStringExtra("img");
        List<String> strings = Arrays.asList(img.split("\\|"));

        banner.setBannerStyle(BannerConfig.CENTER);
        banner.setImageLoader(new MyLoader());
        banner.setImages(strings);
        banner.setDelayTime(1000);
        banner.isAutoPlay(true);
        banner.setIndicatorGravity(BannerConfig.CENTER);
        banner.start();


    }
    private class MyLoader extends ImageLoader {
        public void displayImage(Context context, Object path, ImageView imageView) {
            Glide.with(context).load((String) path).into(imageView);
        }
    }


}