购物车展示加减总价

展示页面
public class ShouFragment extends Fragment implements ContarInterfac.shouFragmentFace{
ContarInterfac.PresenterFara presenterFara;
TextView text_zong;
RecyclerView recyclerview_1;
public CheckBox checkBox_1;
WaiAdapter adapter;
public List<MyBean.DataBean> list = new ArrayList<>();
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view =inflater.inflate(R.layout.shou_fragment,container,false);
text_zong=view.findViewById(R.id.text_zong);
recyclerview_1=view.findViewById(R.id.recyclerview_1);
checkBox_1=view.findViewById(R.id.checkbox_1);
return view;
}

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
    layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
    recyclerview_1.setLayoutManager(layoutManager);
    adapter = new WaiAdapter(list,getContext(),this);
    recyclerview_1.setAdapter(adapter);
    presenterFara =new MyPersenter<>(this);
    presenterFara.getDate();

    checkBox_1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if(checkBox_1.isChecked()){
                ischeke(true);
            }else{
                ischeke(false);
            }
        }
    });

}

@Override
public void showDate(Object obj) {

     MyBean myBean = (MyBean) obj;
     list.addAll(myBean.getData());
     adapter.notifyDataSetChanged();

}
//点击商家里面的checkbox
public int setchchiischedall(boolean ischeckd,Object o){
     MyBean.DataBean.ListBean listBean = (MyBean.DataBean.ListBean) o;
     int n =0;
    for (int i = 0; i <list.size() ; i++) {
        for (int j = 0; j <list.get(i).getList().size() ; j++) {
        MyBean.DataBean.ListBean listBean1 =list.get(i).getList().get(j);
        if(listBean1.equals(listBean)){
                listBean1.lichecde=ischeckd;
                n=i;
            }
        }
    }
    adapter.notifyDataSetChanged();
    setprice();
    return n;
}

//点击商家的checkbox
public void  setischedall(int i,int tag,boolean ischeckd){
    list.get(i).waichecde=ischeckd;
    if(tag!=-1){
        list.get(i).getList().get(tag).lichecde=false;
    }else{
        for (int j = 0; j <list.get(i).getList().size() ; j++) {
            list.get(i).getList().get(j).lichecde=ischeckd;
        }
    }
    setprice();
    adapter.notifyDataSetChanged();
}

//获取是否选中
public void ischeke(boolean b){
    for (int i = 0; i <list.size(); i++) {
                list.get(i).waichecde=b;
        for (int j = 0; j <list.get(i).getList().size() ; j++) {
           list.get(i).getList().get(j).lichecde=b;
        }
    }
    adapter.notifyDataSetChanged();
    setprice();
}
//计算总价
public void setprice(){
    int sum = 0;
    for (int i = 0; i <list.size() ; i++) {

        for (int j = 0; j <list.get(i).getList().size() ; j++) {

            if(list.get(i).getList().get(j).lichecde){
                int num = list.get(i).getList().get(j).getNum();
                double price = list.get(i).getList().get(j).getPrice();
                sum+=price*num;
            }
        }

    }
    text_zong.setText(sum+"");

}

}

外面的recyclerview展示
public class WaiAdapter extends RecyclerView.Adapter<WaiAdapter.Holder_1>{
List<MyBean.DataBean> list;
Context context;
ShouFragment shouFragment;

public WaiAdapter(List<MyBean.DataBean> list, Context context,ShouFragment shouFragment) {
    this.list = list;
    this.context = context;
    this.shouFragment=shouFragment;
}

@NonNull
@Override
public Holder_1 onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
    View view =LayoutInflater.from(context).inflate(R.layout.wai_layout,null);
    return new Holder_1(view);
}

@Override
public void onBindViewHolder(@NonNull final Holder_1 holder_1, final int i) {
    String neme = list.get(i).getSellerName();
    holder_1.text_name.setText(neme);

    LinearLayoutManager layoutManager = new LinearLayoutManager(context);
    layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
    holder_1.recyclerview_2.setLayoutManager(layoutManager);
    LiAdaoter adapter = new LiAdaoter(list.get(i).getList(), context,shouFragment );
    holder_1.recyclerview_2.setAdapter(adapter);
    holder_1.checkbox_2.setChecked(list.get(i).waichecde);

    holder_1.checkbox_2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
        shouFragment.setischedall(i,-1,holder_1.checkbox_2.isChecked());
        }
    });
}

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

public class Holder_1 extends RecyclerView.ViewHolder{
    CheckBox checkbox_2;
    TextView text_name;
    RecyclerView recyclerview_2;

    public Holder_1(@NonNull View itemView) {

        super(itemView);
        checkbox_2=itemView.findViewById(R.id.checkbox_2);
        text_name=itemView.findViewById(R.id.text_name);
        recyclerview_2=itemView.findViewById(R.id.recyclerview_2);
    }
}

}

里面的recyclerview展示
public class LiAdaoter extends RecyclerView.Adapter<LiAdaoter.Holder_2> {
List<MyBean.DataBean.ListBean> list;
Context context;
ShouFragment shouFragment;

public LiAdaoter(List<MyBean.DataBean.ListBean> list, Context context, ShouFragment shouFragment) {
    this.list = list;
    this.context = context;
    this.shouFragment = shouFragment;
}

@NonNull
@Override
public Holder_2 onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
    View view =LayoutInflater.from(context).inflate(R.layout.li_layout,null);
    return new Holder_2(view);
}

@Override
public void onBindViewHolder(@NonNull final Holder_2 holder_2, final int i) {
    double price = list.get(i).getPrice();
    String title = list.get(i).getTitle();
    String url = list.get(i).getImages();
    final int num = list.get(i).getNum();
    holder_2.text_shu.setText(num+"");
    holder_2.text_title.setText(title);
    holder_2.text_price.setText(price+"");
    Glide.with(context).load(url).into(holder_2.image_view);
    holder_2.checkbox_3.setChecked(list.get(i).lichecde);

    holder_2.checkbox_3.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if(holder_2.checkbox_3.isChecked()==false){
                int n = shouFragment.setchchiischedall(holder_2.checkbox_3.isChecked(),list.get(i));
                shouFragment.setischedall(n,i,false);
                shouFragment.checkBox_1.setChecked(false);
            }else{
                int n = shouFragment.setchchiischedall(holder_2.checkbox_3.isChecked(),list.get(i));
            }
        }
    });

    holder_2.text_jia.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            int num1 = list.get(i).getNum();

            num1++;
            holder_2.text_shu.setText(num1+"");
            list.get(i).setNum(num1);
            shouFragment.setprice();
        }
    });
    holder_2.text_jian.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            int num1 = list.get(i).getNum();
            if(num1==1){
                num1=1;
            }else{
                num1--;
                holder_2.text_shu.setText(num1+"");
                list.get(i).setNum(num1);
                shouFragment.setprice();
            }
        }
    });
}

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

public class Holder_2 extends RecyclerView.ViewHolder{
    ImageView image_view;
    TextView text_jia,text_jian,text_shu,text_title,text_price;

    CheckBox checkbox_3;
    public Holder_2(@NonNull View itemView) {
        super(itemView);
        image_view  =itemView.findViewById(R.id.image_view);
        text_jia  =itemView.findViewById(R.id.text_jia);
        text_jian  =itemView.findViewById(R.id.text_jian);
        text_shu  =itemView.findViewById(R.id.text_shu);
        text_title  =itemView.findViewById(R.id.text_title);
        text_price  =itemView.findViewById(R.id.text_price);
        checkbox_3  =itemView.findViewById(R.id.checkbox_3);


    }
}

}