①练习个商城首页，布局先行

//girdle 引入..没有看是不是最新的 就是RecyclerView+BaseQuickAdapter
implementation 'com.android.support:recyclerview-v7:28.+'
implementation 'com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.42'

<androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recycler_shop_store"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

② 实体类

public class Bean implements MultiItemEntity{
            //定义出Type类型
            //搜索
            public static final int TYPE_SOUSUO = 0;
            //公告
            public static final int TYPE_GONGGAO = 1;
            //banner
            public static final int TYPE_BANNER = 2;

            //item类型
            private int fieldType;

            //必须重写的方法，开发工具会提示你的
            @Override
            public int getItemType() {
                return fieldType;
            }

            public void setFieldType(int fieldType) {
                this.fieldType = fieldType;
            }

            public Bean(int fieldType) {
                this.fieldType = fieldType;
            }
            
            //还会有自己需要的各种对象。。
}

③网络请求后的数据添加到实体类中，建立实体类的集合（这个就是BaseMultiItemQuickAdapter的数据源），遍历每一组数据，拿到第i个的type(后台给返回的类型)，然后添加上我们定义的对应的Type类型，这样我们的数据源就OK啦！

shopStoreBean=newGson().fromJson(response.body().string(),ShopStoreBean.class);
                List<ShopStoreBean.DataBeanX.ItemsBean> list = shopStoreBean.getData().getItems();
                for (int i=0;i<shopStoreBean.getData().getItems().size();i++){
                    switch (shopStoreBean.getData().getItems().get(i).getType()){
                        case "search":
                            //搜索
                            list.get(i).setFieldType(ShopStoreBean.DataBeanX.ItemsBean.TYPE_SOUSUO);
                            break;
                        case "banner":
                            //banner
                            list.get(i).setFieldType(ShopStoreBean.DataBeanX.ItemsBean.TYPE_BANNER);
                            break;
                        case "navBar":
                            //导航组
                            list.get(i).setFieldType(ShopStoreBean.DataBeanX.ItemsBean.TYPE_DAOHANG);
                            break;
               }
}

④有了数据源我们就添加适配器吧

TextAdapter adapter = new TextAdapter (list);
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
recyclerView.setAdapter(adapter);
adapter.notifyDataSetChanged();

⑤还没有写适配器。。。加上

public class TextAdapter extends BaseMultiItemQuickAdapter<ShopStoreBean.DataBeanX.ItemsBean, BaseViewHolder> {
    public TextAdapter(List<ShopStoreBean.DataBeanX.ItemsBean> data) {
        super(data);
        //设置当传入的itemType为某个常量显示不同的item
        addItemType(ShopStoreBean.DataBeanX.ItemsBean.TYPE_SOUSUO, R.layout.item_search_box); //搜索类
        addItemType(ShopStoreBean.DataBeanX.ItemsBean.TYPE_GONGGAO,R.layout.item_call_board); //公告
        addItemType(ShopStoreBean.DataBeanX.ItemsBean.TYPE_BANNER,R.layout.index_item_banner); //banner
    }

    @Override
    protected void convert(BaseViewHolder helper, ShopStoreBean.DataBeanX.ItemsBean item) {
        switch (item.getItemType()) {
            case ShopStoreBean.DataBeanX.ItemsBean.TYPE_SOUSUO:
                // 这样我们就可以把对应的数据添加到对应的样式里面了
                break;
            case ShopStoreBean.DataBeanX.ItemsBean.TYPE_GONGGAO:
                break;
            case ShopStoreBean.DataBeanX.ItemsBean.TYPE_BANNER:
                break;
        }
    }
}

这里就结束了可能理解不透彻还请多多指点。