android二级联动购物车,Android实现二级购物车的全选加反选、总价功能

本文实例为大家分享了Android实现二级购物车的全选加反选、总价的具体代码，供大家参考，具体内容如下

MainActivity

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.support.v7.widget.LinearLayoutManager;

import android.support.v7.widget.RecyclerView;

import android.util.Log;

import android.view.View;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.TextView;

import java.util.ArrayList;

import wangyaowei.bw.com.shopcart.adapter.ShopAdapter;

import wangyaowei.bw.com.shopcart.bean.DataBean;

import wangyaowei.bw.com.shopcart.bean.ListBean;

import wangyaowei.bw.com.shopcart.bean.ShopBean;

import wangyaowei.bw.com.shopcart.presenter.GoodsPresenter;

import wangyaowei.bw.com.shopcart.view.GoodsView;

public class MainActivity extends AppCompatActivity implements GoodsView {

private RecyclerView rlv_shop;

private GoodsPresenter goodsPresenter;

private CheckBox box_all;

private ShopAdapter shopAdapter;

private ArrayList data;

public TextView sum;

public int nums;

public Double prices;

public double total;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

sum = findViewById(R.id.sum);

rlv_shop = findViewById(R.id.rlv_shop);

LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);

rlv_shop.setLayoutManager(linearLayoutManager);

goodsPresenter = new GoodsPresenter(this);

goodsPresenter.relaed();

box_all = findViewById(R.id.box_all);

}

@Override

public void onResult(ArrayList data) {

this.data=data;

shopAdapter = new ShopAdapter(MainActivity.this, data);

rlv_shop.setAdapter(shopAdapter);

setaaa();

}

private void setaaa() {

box_all.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

if(box_all.isChecked()){

for(int i=0;i

DataBean dataBean = data.get(i);

dataBean.setFlag(true);

ArrayList list = dataBean.getList();

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

ListBean listBean = list.get(j);

listBean.setFlags(true);

}

}

}

else {

for(int i=0;i

DataBean dataBean = data.get(i);

dataBean.setFlag(false);

ArrayList list = dataBean.getList();

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

ListBean listBean = list.get(j);

listBean.setFlags(false);

}

}

}

shopAdapter.notifyDataSetChanged();

getPrice();

}

});

}

private void getPrice() {

total = 0;

int sums=0;

for (int i = 0; i < data.size(); i++) {

DataBean dataBean = data.get(i);

ArrayList list = dataBean.getList();

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

ListBean listBean = list.get(j);

if (listBean.isFlags()){

String num = listBean.getNum();

nums = Integer.valueOf(num);

String price =listBean.getPrice();

prices = Double.valueOf(price);

total += nums * prices;

sums++;

}

}

}

sum.setText(total +"");

}

}

一级适配器

public class ShopAdapter extends RecyclerView.Adapter {

Context context;

ArrayList beans;

public ShopAdapter(Context context, ArrayList beans) {

this.context = context;

this.beans = beans;

}

@NonNull

@Override

public MyViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {

View view=LayoutInflater.from(context).inflate(R.layout.shop_layout,null,false);

MyViewHolder myViewHolder = new MyViewHolder(view);

return myViewHolder;

}

@Override

public void onBindViewHolder(@NonNull MyViewHolder myViewHolder, int i) {

myViewHolder.name_shop.setText(beans.get(i).getSellerName());

LinearLayoutManager linearLayoutManager = new LinearLayoutManager(context);

myViewHolder.rlv_goods.setLayoutManager(linearLayoutManager);

ArrayList list = beans.get(i).getList();

GoodsAdapter goodsAdapter = new GoodsAdapter(context, list);

myViewHolder.rlv_goods.setAdapter(goodsAdapter);

myViewHolder.box_shop.setChecked(beans.get(i).isFlag());

}

@Override

public int getItemCount() {

return beans.size();

}

public class MyViewHolder extends RecyclerView.ViewHolder {

private final TextView name_shop;

private final CheckBox box_shop;

private final RecyclerView rlv_goods;

public MyViewHolder(@NonNull View itemView) {

super(itemView);

name_shop = itemView.findViewById(R.id.name_shop);

rlv_goods = itemView.findViewById(R.id.rlv_goods);

box_shop = itemView.findViewById(R.id.box_shop);

}

}

}

二级适配器

public class GoodsAdapter extends RecyclerView.Adapter {

Context context;

ArrayList beans;

private int shu;

public GoodsAdapter(Context context, ArrayList beans) {

this.context = context;

this.beans = beans;

}

@NonNull

@Override

public MyViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {

View view=LayoutInflater.from(context).inflate(R.layout.goods_layout,null,false);

MyViewHolder myViewHolder = new MyViewHolder(view);

return myViewHolder;

}

@Override

public void onBindViewHolder(@NonNull final MyViewHolder myViewHolder, int i) {

myViewHolder.name_goods.setText(beans.get(i).getTitle());

myViewHolder.price_goods.setText(beans.get(i).getPrice()+"");

String num = beans.get(i).getNum();

shu = Integer.parseInt(num);

myViewHolder.addview.nums.setText(shu +"");

Glide.with(context).load(beans.get(i).getImages()).into(myViewHolder.img_goods);

myViewHolder.box_goods.setChecked(beans.get(i).isFlags());

myViewHolder.addview.jia.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

shu++;

myViewHolder.addview.nums.setText(shu +"");

}

});

myViewHolder.addview.jian.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

if (shu>=1){

shu--;

myViewHolder.addview.nums.setText(shu +"");

}else {

Toast.makeText(context, "已经最少不能减了", Toast.LENGTH_SHORT).show();

}

}

});

}

@Override

public int getItemCount() {

return beans.size();

}

public class MyViewHolder extends RecyclerView.ViewHolder {

private final TextView name_goods,price_goods;

private final ImageView img_goods;

private final AddView addview;

private final CheckBox box_goods;

public MyViewHolder(@NonNull View itemView) {

super(itemView);

name_goods = itemView.findViewById(R.id.name_goods);

price_goods = itemView.findViewById(R.id.price_goods);

img_goods = itemView.findViewById(R.id.img_goods);

addview = itemView.findViewById(R.id.addview);

box_goods = itemView.findViewById(R.id.box_goods);

}

}

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。