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定义一个接口HomPageContract

public interface HomPageContract {

    interface View extends BaseContract.BaseView{

        void getAdSuccess(AdBean adBean);

        void getCatagorySuccess(CatagoryBean catagoryBean);
    }

    interface Presenter extends BaseContract.BasePresenter<View>{
        void getAd();

        void getCatagory();
    }
}

写一个HomePagePresenter类

public class HomePagePresenter extends BasePresenter<HomPageContract.View> implements HomPageContract.Presenter {
    private AdApi adApi;
    private CatagoryApi catagoryApi;

    @Inject
    public HomePagePresenter(AdApi adApi, CatagoryApi catagoryApi) {
        this.adApi = adApi;
        this.catagoryApi = catagoryApi;
    }

    @Override
    public void getAd() {
        adApi.getAd()
                .observeOn(AndroidSchedulers.mainThread())
                .subscribeOn(Schedulers.io())
                .subscribe(new Observer<AdBean>() {
                    @Override
                    public void onSubscribe(Disposable d) {

                    }

                    @Override
                    public void onNext(AdBean adBean) {
                        mView.getAdSuccess(adBean);
                    }

                    @Override
                    public void onError(Throwable e) {

                    }

                    @Override
                    public void onComplete() {

                    }
                });
    }

    @Override
    public void getCatagory() {
        catagoryApi.getCatagory()
                .observeOn(AndroidSchedulers.mainThread())
                .subscribeOn(Schedulers.io())
                .subscribe(new Observer<CatagoryBean>() {
                    @Override
                    public void onSubscribe(Disposable d) {

                    }

                    @Override
                    public void onNext(CatagoryBean catagoryBean) {
                        mView.getCatagorySuccess(catagoryBean);
                    }

                    @Override
                    public void onError(Throwable e) {

                    }

                    @Override
                    public void onComplete() {

                    }
                });
    }


}

主页面

public  class HomePageFragment extends BaseFragment<HomePagePresenter> implements HomPageContract.View {
    private Banner banner;
    private RecyclerView rvClass;
    private MarqueeView marqueeView;
    private RecyclerView rvSecKill;
    private RecyclerView rvRecommend;
    private ImageView ivZxing;
    @Override
    public int getContentLayout() {
        return R.layout.fragment_home;
    }

    @Override
    public void inject() {

        DaggerHttpComponent.builder()
                .httpModule(new HttpModule())
                .build()
                .inject(this);
    }

    @Override
    public void initView(View view) {
        marqueeView = view.findViewById(R.id.marqueeView);
        List<String> info = new ArrayList<>();
        info.add("1. 大家好，我是孙福生。");
        info.add("2. 欢迎大家关注我哦！");
        info.add("3. GitHub帐号：sfsheng0322");
        info.add("4. 新浪微博：孙福生微博");
        info.add("5. 个人博客：sunfusheng.com");
        info.add("6. 微信公众号：孙福生");
        marqueeView.startWithList(info);

        banner = (Banner) view.findViewById(R.id.banner);
        rvClass = view.findViewById(R.id.rvClass);
        //设置布局管理器
        GridLayoutManager gridLayoutManager = new GridLayoutManager(getContext(), 2, RecyclerView.HORIZONTAL, false);
        rvClass.setLayoutManager(gridLayoutManager);

        rvSecKill = view.findViewById(R.id.rvSecKill);
        //设置布局管理器
        GridLayoutManager gridLayoutManager1 = new GridLayoutManager(getContext(), 1, RecyclerView.HORIZONTAL, false);
        rvSecKill.setLayoutManager(gridLayoutManager1);

        //设置布局管理器
        rvRecommend = view.findViewById(R.id.rvRecommend);
        GridLayoutManager gridLayoutManager2 = new GridLayoutManager(getContext(), 2, RecyclerView.VERTICAL, false);
        rvRecommend.setLayoutManager(gridLayoutManager2);

        //设置图片加载器
        banner.setImageLoader(new GlideImageLoader());

        //二维码
        ivZxing = view.findViewById(R.id.ivZxing);

        ivZxing.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(getContext(), CaptureActivity.class);
                startActivityForResult(intent, 1);
            }
        });
        //请求数据
        initData();
    }

    private void initData() {
        mPresenter.getAd();
        mPresenter.getCatagory();
    }

    @Override
    public void getAdSuccess(final AdBean adBean) {
        List<AdBean.DataBean> data = adBean.getData();
        List<String> images = new ArrayList<>();
        for (int i = 0; i < data.size(); i++) {
            images.add(data.get(i).getIcon());
        }
        //设置图片集合
        banner.setImages(images);
        //banner设置方法全部调用完毕时最后调用
        banner.start();

        RvSecKillAdapter rvSecKillAdapter = new RvSecKillAdapter(getActivity(), adBean.getMiaosha().getList());
        rvSecKill.setAdapter(rvSecKillAdapter);

        rvSecKillAdapter.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(int position) {
                //跳转显示详情
                //获取地址
                String detailUrl = adBean.getMiaosha().getList().get(position).getDetailUrl();
                Intent intent = new Intent(getContext(), WebViewActivity.class);
                intent.putExtra("detailUrl", detailUrl);
                startActivity(intent);
            }

            @Override
            public void onLongItemClick(int position) {

            }
        });

        RvRecommendAdapter rvRecommendAdapter = new RvRecommendAdapter(getActivity(), adBean.getTuijian().getList());
        rvRecommend.setAdapter(rvRecommendAdapter);
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        //结束轮播
        banner.stopAutoPlay();
    }



    public void getCatagorySuccess(CatagoryBean catagoryBean) {

        final List<CatagoryBean.DataBean> data = catagoryBean.getData();
        RvClassAdapter rvClassAdapter = new RvClassAdapter(getContext(),data);
        rvClass.setAdapter(rvClassAdapter);
        rvClassAdapter.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(int position) {
                Toast.makeText(getContext(), data.get(position).getName(), Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onLongItemClick(int position) {

            }
        });
    }


}

    写一个适配器RvClassAdapter

public class RvClassAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    private Context context;
    private List<CatagoryBean.DataBean> list;
    private LayoutInflater inflater;
    private OnItemClickListener onItemClickListener;

    public RvClassAdapter(Context context, List<CatagoryBean.DataBean> list) {
        this.context = context;
        this.list = list;
        inflater = LayoutInflater.from(context);
    }

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



    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = inflater.inflate(R.layout.rvclass_item, parent, false);
        ClassViewHoler classViewHoler = new ClassViewHoler(view);
        return classViewHoler;
    }

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, final int position) {

        ClassViewHoler classViewHoler = (ClassViewHoler) holder;
        CatagoryBean.DataBean dataBean = list.get(position);
        classViewHoler.iv.setImageURI(dataBean.getIcon());
        classViewHoler.tv.setText(dataBean.getName());

        classViewHoler.ll.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (onItemClickListener != null) {
                    onItemClickListener.onItemClick(position);
                }
            }
        });
    }

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

    class ClassViewHoler extends RecyclerView.ViewHolder{
        private final SimpleDraweeView iv;
        private final TextView tv;
        private final LinearLayout ll;
        public ClassViewHoler(View itemView) {
            super(itemView);
            iv = itemView.findViewById(R.id.iv);
            tv = itemView.findViewById(R.id.tv);
            ll = itemView.findViewById(R.id.ll);
        }
    }
}

RvRecommendAdapter适配器

public class RvRecommendAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    private Context context;
    private List<AdBean.TuijianBean.ListBean> list;
    private LayoutInflater inflater;
    private OnItemClickListener onItemClickListener;

    public RvRecommendAdapter(Context context, List<AdBean.TuijianBean.ListBean> list) {
        this.context = context;
        this.list = list;
        inflater = LayoutInflater.from(context);
    }

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = inflater.inflate(R.layout.rvrecommend_item, parent, false);
        RecommendViewHolder recommendViewHolder = new RecommendViewHolder(view);
        return recommendViewHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
        RecommendViewHolder recommendViewHolder = (RecommendViewHolder) holder;
        AdBean.TuijianBean.ListBean listBean = list.get(position);
        String images = listBean.getImages();
        String[] split = images.split("\\|");
        String url = split.length == 0 ? images : split[0];
        recommendViewHolder.iv.setImageURI(url);
        recommendViewHolder.tv.setText(listBean.getTitle());

    }

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

    class RecommendViewHolder extends RecyclerView.ViewHolder {

        private final SimpleDraweeView iv;
        private final TextView tv;

        public RecommendViewHolder(View itemView) {
            super(itemView);
            iv = itemView.findViewById(R.id.iv);
            tv = itemView.findViewById(R.id.tv);
        }
    }

}

RvSecKillAdapter适配器

public class RvSecKillAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    private Context context;
    private List<AdBean.MiaoshaBean.ListBeanX> list;
    private LayoutInflater inflater;
    private OnItemClickListener onItemClickListener;

    public RvSecKillAdapter(Context context, List<AdBean.MiaoshaBean.ListBeanX> list) {
        this.context = context;
        this.list = list;
        inflater = LayoutInflater.from(context);
    }

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

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = inflater.inflate(R.layout.rvseckill_item, parent, false);
        SecKillViewHolder secKillViewHolder = new SecKillViewHolder(view);
        return secKillViewHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, final int position) {
        SecKillViewHolder secKillViewHolder = (SecKillViewHolder) holder;
        AdBean.MiaoshaBean.ListBeanX listBeanX = list.get(position);
        String url = listBeanX.getImages().split("\\|")[0];
        secKillViewHolder.iv.setImageURI(url);
        secKillViewHolder.iv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (onItemClickListener!=null){
                    onItemClickListener.onItemClick(position);
                }
            }
        });
    }

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

    class SecKillViewHolder extends RecyclerView.ViewHolder{

        private final SimpleDraweeView iv;

        public SecKillViewHolder(View itemView) {
            super(itemView);
            iv = itemView.findViewById(R.id.iv);
        }
    }
}

适配器布局

rvclass_item

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:id="@+id/ll"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:padding="10dp"
              android:gravity="center"
              android:orientation="vertical">

    <com.facebook.drawee.view.SimpleDraweeView
        android:id="@+id/iv"
        android:layout_width="50dp"
        android:layout_height="50dp"/>

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

</LinearLayout>

rvrecommend_item

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:id="@+id/ll"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:gravity="center"
              android:orientation="vertical"
              android:padding="10dp">

    <com.facebook.drawee.view.SimpleDraweeView
        android:id="@+id/iv"
        android:layout_width="200dp"
        android:layout_height="200dp"/>

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

</LinearLayout>

rvseckill_item

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:padding="10dp"
    android:layout_height="wrap_content">

    <com.facebook.drawee.view.SimpleDraweeView
        android:id="@+id/iv"
        android:layout_width="90dp"
        android:layout_height="90dp"/>

</LinearLayout>