MVp

public abstract class BasePresenter {
    DataCall dataCall;

    public BasePresenter(DataCall dataCall) {
        this.dataCall = dataCall;
    }
    public void  getData(Object...ag){
        IRequest create = RetrifitUtils.getInstance().getCreate(IRequest.class);
        getModel(create,ag)
              .subscribeOn(Schedulers.io())
              .observeOn(AndroidSchedulers.mainThread())
              .subscribe(new Consumer<GoodsBean>() {
                  @Override
                  public void accept(GoodsBean goodsBean) throws Exception {
                      if (goodsBean.status.equals("0000")) {
                          dataCall.sucess(goodsBean);
                      }
                  }
              }, new Consumer<Throwable>() {
                  @Override
                  public void accept(Throwable throwable) throws Exception {

                  }
              });


    }

    protected abstract Observable getModel(IRequest create, Object[] ag);

}

public interface DataCall<T> {
    void sucess(T tt);

    void faild();
}

public class MyFirstAdapter extends RecyclerView.Adapter<MyFirstAdapter.VHH> {
    Context context;
    List<YijiBean> list;
    public MyFirstAdapter(Context context) {
        this.context = context;
        list = new ArrayList<>();
    }

    @NonNull
    @Override
    public VHH onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View inflate = View.inflate(context, R.layout.layout_first, null);

        return new VHH(inflate);
    }

    @Override
    public void onBindViewHolder(@NonNull VHH vhh, final int i) {
        vhh.first.setText(list.get(i).name);

        vhh.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String id = list.get(i).id;
                EventBus.getDefault().postSticky(id);
            }
        });
    }

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

    public void addList(List<YijiBean> tt) {
        list.addAll(tt);
    }

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

    public class VHH extends RecyclerView.ViewHolder {

        private final TextView first;

        public VHH(@NonNull View itemView) {
            super(itemView);
            first = itemView.findViewById(R.id.first_rv);
        }
    }
}

private class SencondCall implements DataCall<List<ErJiBean>> {
    @Override
    public void sucess(List<ErJiBean> tt) {
    mySecondAdapter.clear();
    mySecondAdapter.addList(tt);
    mySecondAdapter.notifyDataSetChanged();
    }

    @Override
    public void faild() {

    }
}