京东高仿分类

p层调用：

    //九宫格(分类)
    void ShowgroHomeToView(ShopCar shopCar, IgroHomeView igroHomeView);

    void ShowgroHomes(List<GroupBean.DataBean> list);

    //分类子接口
    void ShowGroChildToView(ShopCar shopCar, IGroChildView iGroChildView,int position);

    void ShowGroChildDatas(List<GroChildBean.DataBean> list);


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//分类
    @Override
    public void ShowgroHomeToView(ShopCar shopCar, IgroHomeView igroHomeView) {
        this.igroHomeView = igroHomeView;

        Map<String,String> map = new HashMap<> ();

        map.put ("token","android");

        shopCar.groHome (map);
    }

    @Override
    public void ShowgroHomes(List<GroupBean.DataBean> list) {
        Log.d (TAG, "ShowgroHomes(九宫格): "+list.size ());

        igroHomeView.ShowgroHomeViews (list);
    }

    //子分类
    @Override
    public void ShowGroChildToView(ShopCar shopCar, IGroChildView iGroChildView,int position) {
        this.iGroChildView = iGroChildView;

        Map<String,String> map = new HashMap<> ();

        map.put ("cid",iGroChildView.getCid ()+"");

        shopCar.groChildGroup (map);
    }

    @Override
    public void ShowGroChildDatas(List<GroChildBean.DataBean> list) {
        Log.d (TAG, "ShowGroChildDatas:(右) "+list.size ());

        iGroChildView.ShowGroChildToViews (list);
    }

在activity中进行调用：

public class GroupFragment extends Fragment implements IgroHomeView,IGroChildView{
    private static final String TAG = "GroupFragment---";
    private RecyclerView left_group;
    private RecyclerView right_group;
    private static List<GroChildBean.DataBean> list;
    private ShowShop showShop;
    private int cid = 1 ;

    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = View.inflate (getActivity (), R.layout.fragment_group, null);

        left_group = view.findViewById (R.id.left_group);
        right_group = view.findViewById (R.id.right_group);

        showShop = new ShowShop ();

        showShop.ShowgroHomeToView (new ShopGoods (showShop),this);

        showShop.ShowGroChildToView (new ShopGoods (showShop),GroupFragment.this,cid);

        return view;
    }

    @Override
    public void ShowGroChildToViews(List<GroChildBean.DataBean> list) {
        Log.d (TAG, "ShowGroChildToView:(right) "+list.size ());

        right_group.setLayoutManager (new LinearLayoutManager (getActivity (), OrientationHelper.VERTICAL,false));

        ProductAdapter productAdapter = new ProductAdapter (getActivity (), list);

        right_group.setAdapter (productAdapter);
    }

    @Override
    public void ShowgroHomeViews(final List<GroupBean.DataBean> list) {
        Log.d (TAG, "ShowgroHomeViews:(left) "+list.size ());

        left_group.setLayoutManager (new LinearLayoutManager (getActivity (),LinearLayoutManager.VERTICAL,false));

        CatagoryAdapter catagoryAdapter = new CatagoryAdapter (getActivity (), list);

        catagoryAdapter.setOnItemClickListener (new CatagoryAdapter.OnItemClickListener () {

            @Override
            public void onClickChild(int position) {

                cid = list.get (position).getCid ();

                showShop.ShowGroChildToView (new ShopGoods (showShop),GroupFragment.this,cid);


                Toast.makeText(getActivity (), "cid:" + GroupFragment.this.cid, Toast.LENGTH_SHORT).show();
            }
        });

        left_group.setAdapter (catagoryAdapter);
    }

    @Override
    public int getCid() {
        return cid;
    }


}