仿京东 --- 首页

前边有界面滑动和底部导航栏，这个比较简单就不做了。

界面用到的图标在网上找吧，这里我就不发了。

主界面布局

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

    <com.bw.movie.diyview.MyScrollView
        android:id="@+id/index_sv"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">

            <com.youth.banner.Banner
                android:id="@+id/index_banner"
                android:layout_width="match_parent"
                android:layout_height="200dp"></com.youth.banner.Banner>

            <android.support.v7.widget.RecyclerView
                android:id="@+id/index_jgg"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"></android.support.v7.widget.RecyclerView>

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal">

                <ImageView
                    android:layout_width="60dp"
                    android:layout_height="20dp"
                    android:src="@drawable/kaui" />

                <ViewFlipper
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="10dp"
                    android:autoStart="true"
                    android:flipInterval="3000"
                    android:inAnimation="@anim/anim_in"
                    android:outAnimation="@anim/anim_out">

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:maxLines="1"
                        android:text="hot vivo X20 带你开启全面屏时代！逆光也清晰，照亮你的美！"
                        android:textSize="12dp" />

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:maxLines="1"
                        android:text="推荐 【现货新品抢购】全面屏2.0震撼来袭，骁龙835处理器，四曲面陶瓷机"
                        android:textSize="12dp" />

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:maxLines="1"
                        android:text="热门 Super AMOLED三星双曲面2K 屏，支持无线充电！"
                        android:textSize="12dp" />

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:maxLines="1"
                        android:text="最新 升级4G大显存！Nvme协议Pcie SSD,速度快人一步】GTX1050Ti就选拯救者！"
                        android:textSize="12dp" />
                </ViewFlipper>
            </LinearLayout>

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="horizontal">

                <ImageView
                    android:layout_width="60dp"
                    android:layout_height="20dp"
                    android:src="@drawable/miaos" />

                <TextView
                    android:text="00点场"
                    android:id="@+id/index_even"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="10dp" />
                <TextView
                    android:layout_marginLeft="15dp"
                    android:id="@+id/index_hour"
                    android:text="00"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content" />
                <TextView
                    android:text=":"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content" />
                <TextView
                    android:id="@+id/index_minute"
                    android:text="00"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content" />
                <TextView
                    android:text=":"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content" />
                <TextView
                    android:id="@+id/index_second"
                    android:text="00"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content" />
            </LinearLayout>

            <ImageView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:src="@drawable/tuijian" />

            <android.support.v7.widget.RecyclerView
                android:id="@+id/index_tuijian"
                android:layout_width="match_parent"
                android:layout_height="match_parent"></android.support.v7.widget.RecyclerView>
        </LinearLayout>
    </com.bw.movie.diyview.MyScrollView>

    <include layout="@layout/mysearch"></include>
</RelativeLayout>

标题布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:background="@color/white"
    android:id="@+id/sousuokuang"
    android:layout_height="50dp"
    android:orientation="horizontal"
    android:gravity="center_vertical"
    >

    <TextView
        android:id="@+id/mysearch_sao"
        android:gravity="center"
        android:text="扫一扫"
        android:layout_width="0dp"
        android:layout_height="30dp"
        android:layout_weight="2"
         />

    <RelativeLayout
        android:id="@+id/mysearch_rl"
        android:layout_width="0dp"
        android:layout_height="30dp"
        android:layout_weight="6"
        android:background="@drawable/suosuo">

        <ImageView
            android:layout_marginTop="3dp"
            android:layout_width="25dp"
            android:layout_height="25dp"
            android:layout_alignParentStart="true"
            android:layout_alignParentTop="true"
            android:src="@drawable/a_4" />

        <ImageView
            android:layout_marginTop="3dp"
            android:layout_width="25dp"
            android:layout_height="25dp"
            android:layout_alignParentEnd="true"
            android:layout_alignParentTop="true"
            android:src="@drawable/root" />
    </RelativeLayout>

    <TextView
        android:id="@+id/mysearch_info"
        android:gravity="center"
        android:text="消息"
        android:layout_width="0dp"
        android:layout_height="30dp"
        android:layout_weight="2"
         />
</LinearLayout>

主界面代码 IndexFragment

public class IndexFragment extends Fragment implements IndexView {
    @BindView(R.id.index_banner)
    Banner indexBanner;
    Unbinder unbinder;
    @BindView(R.id.index_jgg)
    RecyclerView indexJgg;
    @BindView(R.id.index_tuijian)
    RecyclerView indexTuijian;
    @BindView(R.id.sousuokuang)
    LinearLayout sousuokuang;
    @BindView(R.id.index_sv)
    MyScrollView indexSv;
    @BindView(R.id.mysearch_sao)
    TextView mysearchSao;
    @BindView(R.id.mysearch_rl)
    RelativeLayout mysearchRl;
    @BindView(R.id.mysearch_info)
    TextView mysearchInfo;
    @BindView(R.id.index_even)
    TextView indexEven;
    @BindView(R.id.index_hour)
    TextView indexHour;
    @BindView(R.id.index_minute)
    TextView indexMinute;
    @BindView(R.id.index_second)
    TextView indexSecond;
    private IndexPresenter presenter;
    private List<Ad.DataBean> data;
    private List<Ad.TuijianBean.ListBean> tuijian;
    private CompositeDisposable compositeDisposable = new CompositeDisposable();
    private final int REQUEST_CODE = 200;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = View.inflate(getActivity(), R.layout.index_fg, null);
        unbinder = ButterKnife.bind(this, view);
        return view;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        presenter = new IndexPresenter(this);
        //初始化首页数据
        initData();
        sousuokuang.getBackground().setAlpha(0);
        indexSv.setOnScrollChanged(new MyScrollView.OnScrollChanged() {
            @Override
            public void onScrollChanged(int x, int y, int oldx, int oldy) {
//                Log.d("aaa", x + "," + y + "=====" + oldx + "," + oldy);
                if (y < 270) {
                    int i = (int) ((float) y / (float) 270 * 255);
                    sousuokuang.getBackground().setAlpha(i);
                } else {
                    sousuokuang.getBackground().setAlpha(255);
                }
            }
        });
    }

    private void initData() {
        initMiaosha();
        indexJgg.setLayoutManager(new GridLayoutManager(getActivity(), 2, LinearLayoutManager.HORIZONTAL, false));
        indexTuijian.setLayoutManager(new GridLayoutManager(getActivity(), 2));
        //关闭嵌套滑动
        indexTuijian.setNestedScrollingEnabled(false);
        //固定recyclerview尺寸
        indexTuijian.setHasFixedSize(true);
        presenter.getAd();
        presenter.getCatagory();
    }

    private void initMiaosha() {
        Observable.interval(1, TimeUnit.SECONDS)
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Observer<Long>() {
                    @Override
                    public void onSubscribe(Disposable d) {
                        compositeDisposable.add(d);
                    }

                    @Override
                    public void onNext(Long aLong) {
                        upDateMiaosha();
                    }

                    @Override
                    public void onError(Throwable e) {
                    }

                    @Override
                    public void onComplete() {
                    }
                });
    }

    private void upDateMiaosha() {
        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date curDate = new Date(System.currentTimeMillis());
        String format = df.format(curDate);
        StringBuffer buffer = new StringBuffer();
        String substring = format.substring(0, 11);
        buffer.append(substring);
        Log.d("ccc", substring);
        Calendar calendar = Calendar.getInstance();
        int hour = calendar.get(Calendar.HOUR_OF_DAY);
        if (hour % 2 == 0) {
            indexEven.setText(hour + "点场");
            buffer.append((hour + 2));
            buffer.append(":00:00");
        } else {
            indexEven.setText((hour - 1) + "点场");
            buffer.append((hour + 1));
            buffer.append(":00:00");
        }
        String totime = buffer.toString();

        try {
            Date date = df.parse(totime);
            Date date1 = df.parse(format);
            long defferenttime = date.getTime() - date1.getTime();
            long days = defferenttime / (1000 * 60 * 60 * 24);
            long hours = (defferenttime - days * (1000 * 60 * 60 * 24)) / (1000 * 60 * 60);
            long minute = (defferenttime - days * (1000 * 60 * 60 * 24) - hours * (1000 * 60 * 60)) / (1000 * 60);
            long seconds = defferenttime % 60000;
            long second = Math.round((float) seconds / 1000);
            indexHour.setText("0" + hours + "");
            if (minute >= 10) {
                indexMinute.setText(minute + "");
            } else {
                indexMinute.setText("0" + minute + "");
            }
            if (second >= 10) {
                indexSecond.setText(second + "");
            } else {
                indexSecond.setText("0" + second + "");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void initBanner() {
//        List<String> title = new ArrayList<>();
        List<String> path = new ArrayList<>();
        for (Ad.DataBean bean : data) {
            path.add(bean.getIcon());
        }
        indexBanner.setImages(path)
                .isAutoPlay(true)
                .setImageLoader(new MyLoader())
                .start();
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        unbinder.unbind();
        presenter.onDestroy();
        presenter = null;
    }

    @Override
    public void onSuccess(Ad ad) {
        data = ad.getData();
        tuijian = ad.getTuijian().getList();
        //初始化banner
        initBanner();
        //初始化推荐列表
        initTuijian();
    }

    private void initTuijian() {
        TuiJianAdapter adapter = new TuiJianAdapter(tuijian);
        indexTuijian.setAdapter(adapter);
    }

    @Override
    public void onCatagorySuccess(Catagory catagory) {
        List<Catagory.DataBean> data = catagory.getData();
        //初始化九宫格
        JggAdapter adapter = new JggAdapter(data);
        indexJgg.setAdapter(adapter);
    }

    @OnClick({R.id.mysearch_sao, R.id.mysearch_rl, R.id.mysearch_info})
    public void onViewClicked(View view) {
        switch (view.getId()) {
            case R.id.mysearch_sao:
                Intent intent = new Intent(getContext(), CaptureActivity.class);
                startActivityForResult(intent, REQUEST_CODE);
                break;
            case R.id.mysearch_rl:
                startActivity(new Intent(getContext(), QueryActivity.class));
                break;
            case R.id.mysearch_info:
                break;
        }
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        presenter = null;
        compositeDisposable.clear();
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == REQUEST_CODE) {
            //处理扫描结果（在界面上显示）
            if (null != data) {
                Bundle bundle = data.getExtras();
                if (bundle == null) {
                    return;
                }
                if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_SUCCESS) {
                    String result = bundle.getString(CodeUtils.RESULT_STRING);
                    Toast.makeText(getContext(), "解析结果:" + result, Toast.LENGTH_LONG).show();
                } else if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_FAILED) {
                    Toast.makeText(getContext(), "解析二维码失败", Toast.LENGTH_LONG).show();
                }
            }
        }
    }
}

主界面的自定义控件 MyScollerView

public class MyScrollView extends ScrollView {
    public MyScrollView(Context context) {
        this(context,null,0);
    }

    public MyScrollView(Context context, AttributeSet attrs) {
        this(context, attrs,0);
    }

    public MyScrollView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);

    }

    @Override
    protected void onScrollChanged(int l, int t, int oldl, int oldt) {
        super.onScrollChanged(l, t, oldl, oldt);
        if (onScrollChanged!=null){
            onScrollChanged.onScrollChanged(l, t, oldl, oldt);
        }
    }
    public interface OnScrollChanged{
        void onScrollChanged(int x, int y, int oldx, int oldy);
    }
    private OnScrollChanged onScrollChanged;

    public void setOnScrollChanged(OnScrollChanged onScrollChanged) {
        this.onScrollChanged = onScrollChanged;
    }
}

请求头 Constant

public class Constant {
    public static final String BASE_URL = "https://www.zhaoapi.cn/";
  
}

接口 Retrofit

public interface MyRetrofit {
	//九宫格|分类
    @GET("product/getCatagory")
    Observable<Catagory> getCatagory();
	//子分类
    @GET("product/getProductCatagory")
    Observable<ProductCatagory> getProductCatagory(@Query("cid") String cid);
	//商品列表
    @GET("product/getProducts")
    Observable<Products> getProducts(@Query("pscid") String pscid);
	//首页
    @GET("ad/getAd")
    Observable<Ad> getAd();

    //商品详情
    @GET("product/getProductDetail")
    Observable<Detail> getDetail(@Query("pid") String pid);

    //登录
    @FormUrlEncoded
    @POST("user/login")
    Observable<Login> getLogin(@Field("mobile") String mobile, @Field("password") String password);

    //注册
    @FormUrlEncoded
    @POST("user/reg")
    Observable<Register> getRegister(@Field("mobile") String mobile, @Field("password") String password);

    //修改昵称
    @FormUrlEncoded
    @POST("user/updateNickName")
    Observable<UpDateNc> getUpDateNc(@Field("uid") String uid, @Field("nickname") String nickname);

    //上传头像
    @Multipart
    @POST("file/upload")
    Observable<UpLoadIcon> upLoadIcon(@Query("uid") String uid, @Part MultipartBody.Part part);

    //查询购物车
    @FormUrlEncoded
    @POST("product/getCarts")
    Observable<Cart> getCart(@Field("uid") String uid);

    //加入购物车
    @FormUrlEncoded
    @POST("product/addCart")
    Observable<AddCart> getAddCart(@Field("uid") String uid, @Query("pid") String pid);

    //更新购物车数量
    @FormUrlEncoded
    @POST("product/updateCarts")
    Observable<UpdateCart> getUpdateCart(@Field("uid") String uid, @Field("sellerid") String sellerid, @Field("pid") String pid, @Field("selected") String selected, @Field("num") String num);

    //删除购物车商品
    @FormUrlEncoded
    @POST("product/deleteCart")
    Observable<DeleteCart> deleteCart(@Field("uid") int uid, @Field("pid") int pid);

    //搜索商品
    @GET("product/searchProducts")
    Observable<QueryGoods> getQueryGoods(@Query("keywords") String keywords);

    //创建订单
    @FormUrlEncoded
    @POST("product/createOrder")
    Observable<CreateOrder> getCreateOrder(@Field("uid") String uid, @Field("price") String price);

    //获得订单列表
    @GET("product/getOrders")
    Observable<OrderList> getOrderList(@Query("uid") String uid, @Query("page") String page);
}

banner轮播图的工具类 MyLoader

public class MyLoader extends ImageLoader {
    @Override
    public ImageView createImageView(Context context) {
        return new SimpleDraweeView(context);
    }

    @Override
    public void displayImage(Context context, Object path, ImageView imageView) {
        imageView.setImageURI(Uri.parse((String) path));
    }
}

retrofit的工具类 RetrofitUtil

public class RetrofitUtil {
    private final Retrofit retrofit;
    private HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor().setLevel(HttpLoggingInterceptor.Level.BODY);

    private RetrofitUtil() {
        retrofit = new Retrofit.Builder()
                .baseUrl(Constant.BASE_URL)
                .addConverterFactory(GsonConverterFactory.create())
                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                .client(buildOkhttpClinet())
                .build();
    }

    private OkHttpClient buildOkhttpClinet() {
        return new OkHttpClient.Builder()
                .connectTimeout(5, TimeUnit.SECONDS)
                .readTimeout(5, TimeUnit.SECONDS)
                .writeTimeout(5, TimeUnit.SECONDS)
                .addInterceptor(httpLoggingInterceptor)
                .build();
    }

    //暴露外部的方法
    public static RetrofitUtil getDefault() {
        return SingleHolder._instant;
    }

    private static class SingleHolder {
        private static final RetrofitUtil _instant = new RetrofitUtil();
    }

    //动态代理创建接口实现类
    public <T> T create(Class<T> Clazz) {
        return retrofit.create(Clazz);
    }
}

mvp-model-IndexModel

public class IndexModel {
    public Observable<Ad> getAd() {
        return RetrofitUtil.getDefault().create(MyRetrofit.class).getAd();
    }

    public Observable<Catagory> getCatagory() {
        return RetrofitUtil.getDefault().create(MyRetrofit.class).getCatagory();
    }

    public Observable<Detail> getDetail(String pid) {
        return RetrofitUtil.getDefault().create(MyRetrofit.class).getDetail(pid);
    }

    public Observable<AddCart> getAddCart(String uid, String pid) {
        return RetrofitUtil.getDefault().create(MyRetrofit.class).getAddCart(uid, pid);
    }
}

mvp-presenter-IndexPresenter

public class IndexPresenter extends BasePresenter<IndexView> {

    private IndexModel indexModel;

    public IndexPresenter(IndexView view) {
        super(view);
    }

    @Override
    public void initModel() {
        indexModel = new IndexModel();
    }
    public void getAd() {
        indexModel.getAd()
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Observer<Ad>() {
                    @Override
                    public void onSubscribe(Disposable d) {
                        compositeDisposable.add(d);
                    }

                    @Override
                    public void onNext(Ad ad) {
                        view.onSuccess(ad);
                    }

                    @Override
                    public void onError(Throwable e) {

                    }

                    @Override
                    public void onComplete() {

                    }
                });
    }

    public void getCatagory() {
        indexModel.getCatagory()
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Observer<Catagory>() {
                    @Override
                    public void onSubscribe(Disposable d) {
                        compositeDisposable.add(d);
                    }

                    @Override
                    public void onNext(Catagory catagory) {
                        view.onCatagorySuccess(catagory);
                    }

                    @Override
                    public void onError(Throwable e) {

                    }

                    @Override
                    public void onComplete() {

                    }
                });
    }
}

mvp-view-IndexView

public interface IndexView extends IView{
    void onSuccess(Ad ad);
    void onCatagorySuccess(Catagory catagory);
}

推荐适配器的布局

<?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"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <com.facebook.drawee.view.SimpleDraweeView
        android:layout_gravity="center_horizontal"
        android:id="@+id/tuijian_img"
        android:layout_width="100dp"
        android:layout_height="100dp"
        app:placeholderImage="@drawable/ic_launcher_background" />

    <TextView
        android:maxLines="2"
        android:id="@+id/tuijian_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:layout_marginTop="5dp"
        android:id="@+id/tuijian_price"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@color/red" />
</LinearLayout>

推荐的适配器  TuijianAdapter

public class TuiJianAdapter extends RecyclerView.Adapter {


    private List<Ad.TuijianBean.ListBean> list;
    private Context context;

    public TuiJianAdapter(List<Ad.TuijianBean.ListBean> list) {
        this.list = list;
    }

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        context = parent.getContext();
        View view = View.inflate(context, R.layout.tuijian_item, null);
        ViewHolder viewHolder = new ViewHolder(view);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
        ViewHolder mHolder = (ViewHolder) holder;
        final Ad.TuijianBean.ListBean bean = list.get(position);
        //处理图片url
        String imgUrl = getImgUrl(bean.getImages());
        mHolder.tuijianImg.setImageURI(Uri.parse(imgUrl));
        mHolder.tuijianTitle.setText(bean.getTitle());
        mHolder.tuijianPrice.setText("￥" + bean.getBargainPrice());

        mHolder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(context, DetailActivity.class);
                intent.putExtra("pid",bean.getPid()+"");
                context.startActivity(intent);
            }
        });
    }

    private String getImgUrl(String images) {
        String[] split = images.split("\\|");
        return split[0];
    }

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

    class ViewHolder extends RecyclerView.ViewHolder {
        @BindView(R.id.tuijian_img)
        SimpleDraweeView tuijianImg;
        @BindView(R.id.tuijian_title)
        TextView tuijianTitle;
        @BindView(R.id.tuijian_price)
        TextView tuijianPrice;

        ViewHolder(View view) {
            super(view);
            ButterKnife.bind(this, view);
        }
    }
}

九宫格适配器的布局

<?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"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="5dp"
    >
<com.facebook.drawee.view.SimpleDraweeView
    android:id="@+id/jgg_img"
    app:placeholderImage="@drawable/ic_launcher_background"
    android:layout_width="50dp"
    android:layout_height="50dp" />
    <TextView
        android:id="@+id/jgg_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</LinearLayout>

九宫格的适配器 Jggadapter

public class JggAdapter extends RecyclerView.Adapter {

    private List<Catagory.DataBean> list;

    public JggAdapter(List<Catagory.DataBean> list) {
        this.list = list;
    }

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = View.inflate(parent.getContext(), R.layout.jgg_item, null);
        ViewHolder viewHolder = new ViewHolder(view);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
        ViewHolder mHolder = (ViewHolder) holder;
        final Catagory.DataBean bean = list.get(position);
        mHolder.jggName.setText(bean.getName());
        mHolder.jggImg.setImageURI(Uri.parse(bean.getIcon()));
    }

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


    static class ViewHolder extends RecyclerView.ViewHolder{
        @BindView(R.id.jgg_img)
        SimpleDraweeView jggImg;
        @BindView(R.id.jgg_name)
        TextView jggName;

        ViewHolder(View view) {
            super(view);
            ButterKnife.bind(this, view);
        }
    }
}

推荐跳转的详情页面

detail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=".mvp.view.activity.DetailActivity">

    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="9">

        <com.youth.banner.Banner
            android:id="@+id/detail_banner"
            android:layout_width="match_parent"
            android:layout_height="350dp"></com.youth.banner.Banner>
        <TextView
            android:textStyle="bold"
            android:id="@+id/detail_price"
            android:textColor="@color/red"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <TextView
            android:textColor="@color/black"
            android:layout_marginTop="10dp"
            android:id="@+id/detail_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:orientation="horizontal">

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:layout_weight="6"
            android:orientation="horizontal">

            <ImageView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:src="@drawable/lianxi" />

            <ImageView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:src="@drawable/dianpu" />

            <ImageView
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:src="@drawable/gouwuche" />
        </LinearLayout>

        <Button
            android:id="@+id/detail_addcart"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="4"
            android:background="@color/cheng"
            android:gravity="center"
            android:text="加入购物车"
            android:textColor="@color/white" />
    </LinearLayout>
</LinearLayout>

DetailActivity

public class DetailActivity extends BaseActivity<DetailPresenter> implements DetailView {


    @BindView(R.id.detail_banner)
    Banner detailBanner;
    @BindView(R.id.detail_price)
    TextView detailPrice;
    @BindView(R.id.detail_title)
    TextView detailTitle;
    @BindView(R.id.detail_addcart)
    Button detailAddcart;
    private Detail.DataBean data;
    private String pid;
    private int uid;

    @Override
    public DetailPresenter providePresenter() {
        return new DetailPresenter(this);
    }

    @Override
    public int provideLayoutId() {
        return R.layout.activity_detail;
    }

    @Override
    public void initListener() {

    }

    @Override
    public void initDate() {
        pid = getIntent().getStringExtra("pid");
        uid = getSharedPreferences("user", 0).getInt("uid", 0);
//        Log.d("aaa", pid);
        presenter.getDetai(pid);

    }

    private void initBanner() {

        List<String> path = new ArrayList<>();
        String images = data.getImages();
        String[] split = images.split("\\|");
        for (String s : split) {
            path.add(s);
        }
        detailBanner.setImages(path)
                .isAutoPlay(false)
                .setImageLoader(new MyLoader())
                .setBannerStyle(BannerConfig.NUM_INDICATOR)
                .start();
    }

    @Override
    public void onDetailSuccess(Detail detail) {
        data = detail.getData();
        //初始化banner
        initBanner();
        detailPrice.setText("￥" + data.getBargainPrice());
        detailTitle.setText(data.getTitle());
    }

    @Override
    public void onAddCartSuccess(AddCart addCart) {
        Toast.makeText(DetailActivity.this,addCart.getMsg(),Toast.LENGTH_SHORT).show();
    }


    @OnClick(R.id.detail_addcart)
    public void onViewClicked() {
        //添加之前先判断是否已登录
        int i = getSharedPreferences("user", 0).getInt("islogin", 0);
        if(i==1){
            presenter.getAddCart(uid+"",pid);
        }else {
            Toast.makeText(DetailActivity.this,"登录后可以使用购物车",Toast.LENGTH_SHORT).show();
        }

    }
}

mvp-presenter-DetailPresenter

public class DetailPresenter extends BasePresenter<DetailView> {

    private IndexModel indexModel;

    public DetailPresenter(DetailView view) {
        super(view);
    }

    @Override
    public void initModel() {
        indexModel = new IndexModel();
    }
    public void getDetai(String pid) {
        indexModel.getDetail(pid)
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Observer<Detail>() {
                    @Override
                    public void onSubscribe(Disposable d) {
                        compositeDisposable.add(d);
                    }

                    @Override
                    public void onNext(Detail detail) {
                        view.onDetailSuccess(detail);
                    }

                    @Override
                    public void onError(Throwable e) {

                    }

                    @Override
                    public void onComplete() {

                    }
                });

    }
    public void getAddCart(String uid,String pid) {
        indexModel.getAddCart(uid,pid)
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Observer<AddCart>() {
                    @Override
                    public void onSubscribe(Disposable d) {
                        compositeDisposable.add(d);
                    }

                    @Override
                    public void onNext(AddCart addCart) {
                        view.onAddCartSuccess(addCart);
                    }

                    @Override
                    public void onError(Throwable e) {

                    }

                    @Override
                    public void onComplete() {

                    }
                });

    }
}

mvp-view-DetailView

public interface DetailView extends IView {
    void onDetailSuccess(Detail detail);
    void onAddCartSuccess(AddCart addCart);
}