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最新推荐文章于 2023-02-14 09:28:41 发布

原创最新推荐文章于 2023-02-14 09:28:41 发布 · 163 阅读

CC 4.0 BY-SA版权

主页面代码

 mContext = this;
        //获取P层
        presenter = new ShoppingCartPresenter();
        presenter.attachView(this);
        presenter.requestData();
        //对上下拉的处理
        srlContainer.setOnRefreshListener(new OnRefreshListener() {
            @Override
            public void onRefresh(RefreshLayout refreshlayout) {
                presenter.requestData();
                refreshlayout.finishRefresh(2000/*,false*/);//传入false表示刷新失败
            }
        });
        srlContainer.setOnLoadMoreListener(new OnLoadMoreListener() {
            @Override
            public void onLoadMore(RefreshLayout refreshlayout) {
                refreshlayout.finishLoadMore(2000/*,false*/);//传入false表示加载失败
            }
        });

    }

    @Override
    public void showLoading() {
        alertDialog = new AlertDialog.Builder(mContext) .setMessage("刷新中").create();
        alertDialog.show();
    }

    @Override
    public void hideLoading() {
        alertDialog.hide();
    }

    @Override
    public void showData(String mCartString) {
        cbAll.setOnCheckedChangeListener(null);
        //全选反选的处理
        //cbAll.setOnCheckedChangeListener(this);
        cbAll.setOnClickListener(this);
        //数据解析展示
        ShoppingCartBean cartBean = new Gson().fromJson(mCartString, ShoppingCartBean.class);
        //外层商家条目的数据源
        businessList = cartBean.getData();
        //TODO 不建议这样处理，手动移除第一个条目
        //设置布局管理器
        LinearLayoutManager manager = new LinearLayoutManager(mContext, LinearLayoutManager.VERTICAL, false);
        rvBusiness.setLayoutManager(manager);
        //设置适配器
        adapter = new BusinessAdapter(R.layout.recycler_business_item, businessList);
        rvBusiness.setAdapter(adapter);

全选

@Override
    public void onClick(View v) {
        //全选逻辑的处理
        for (int i = 0; i < businessList.size(); i++) {
            //首先让外层的商家条目全部选中
            businessList.get(i).setBusinessChecked(cbAll.isChecked());
            //然后让里层的商品条目全部选中
            for (int j = 0; j < businessList.get(i).getList().size(); j++) {
                businessList.get(i).getList().get(j).setGoodsChecked(cbAll.isChecked());
            }
        }
        adapter.notifyDataSetChanged();
        //计算总价
        calculateTotalCount();
    }

适配
package com.android.alex.shoppingcartdemo.ui.adapter;

import android.support.annotation.Nullable;
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 com.android.alex.shoppingcartdemo.R;
import com.android.alex.shoppingcartdemo.data.beans.ShoppingCartBean;
import com.chad.library.adapter.base.BaseQuickAdapter;
import com.chad.library.adapter.base.BaseViewHolder;

import java.util.List;

/**

@author Alex
@date 2019/1/15.
GitHub：https://github.com/wangshuaialex
*/
public class BusinessAdapter extends BaseQuickAdapter<ShoppingCartBean.DataBean, BaseViewHolder> {

OnBusinessItemClickLisenter onBusinessItemClickLisenter;

public interface OnBusinessItemClickLisenter {
public void onCallBack();
}

public void setOnBusinessItemClickLisenter(OnBusinessItemClickLisenter onBusinessItemClickLisenter) {
this.onBusinessItemClickLisenter = onBusinessItemClickLisenter;
}

public BusinessAdapter(int layoutResId, @Nullable List<ShoppingCartBean.DataBean> data) {
super(layoutResId, data);
}
@Override
protected void convert(BaseViewHolder helper, final ShoppingCartBean.DataBean item) {
//设置商家名称
helper.setText(R.id.tv_business_name, item.getSellerName());
//设置商家下的子商品条目
RecyclerView rv_goods = helper.getView(R.id.rv_goods);
//避免焦点抢占
final CheckBox cb_business = helper.getView(R.id.cb_business);
cb_business.setOnCheckedChangeListener(null);
//************************************
//获取商家条目是否选中状态
cb_business.setChecked(item.getBusinessChecked());
//子商品条目数据源
List<ShoppingCartBean.DataBean.ListBean> goodsList = item.getList();
LinearLayoutManager manager = new LinearLayoutManager(mContext, LinearLayoutManager.VERTICAL, false);
//设置子条目适配器
final GoodsAdapter goodsAdapter = new GoodsAdapter(R.layout.recycler_goods_item, goodsList);
rv_goods.setLayoutManager(manager);
rv_goods.setAdapter(goodsAdapter);
```
 //首先处理内部子条目控制外部条目 二级控制一
 goodsAdapter.setOnGoodsItemClickLisenter(new GoodsAdapter.OnGoodsItemClickLisenter() {
     @Override
     public void onCallBack() {
         //遍历获取所有子条目，只要有一个未勾选，商品类别也应该是未勾选
         boolean result = true;
         for (int i = 0; i < item.getList().size(); i++) {
             result = result & item.getList().get(i).getGoodsChecked();
         }
         cb_business.setChecked(result);
         //刷新适配器
         goodsAdapter.notifyDataSetChanged();
         //把最后的状态进行回传
         onBusinessItemClickLisenter.onCallBack();
     }
 });
 一级控制二级
 //然后外层的商品类别条目需要控制里面的商品条目
 cb_business.setOnClickListener(new View.OnClickListener() {
     @Override
     public void onClick(View v) {
         //获取商品类别勾选状态
         //外层商品类别条目获取的关键：cb_business.isChecked()
         for (int i = 0; i < item.getList().size(); i++) {
             item.getList().get(i).setGoodsChecked(cb_business.isChecked());
         }
         item.setBusinessChecked(cb_business.isChecked());
         notifyDataSetChanged();
         //把最后的状态进行回传
         onBusinessItemClickLisenter.onCallBack();
     }
 });
```
}
}
二级适配
package com.android.alex.shoppingcartdemo.ui.adapter;

import android.support.annotation.Nullable;
import android.view.View;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.ImageView;

import com.android.alex.shoppingcartdemo.R;
import com.android.alex.shoppingcartdemo.data.beans.ShoppingCartBean;
import com.android.alex.shoppingcartdemo.ui.widget.CalculatorView;
import com.bumptech.glide.Glide;
import com.chad.library.adapter.base.BaseQuickAdapter;
import com.chad.library.adapter.base.BaseViewHolder;

import java.util.List;

/**

@author Alex
@date 2019/1/15.

GitHub：https://github.com/wangshuaialex
*/
public class GoodsAdapter extends BaseQuickAdapter<ShoppingCartBean.DataBean.ListBean, BaseViewHolder> {
OnGoodsItemClickLisenter onGoodsItemClickLisenter;

public void setOnGoodsItemClickLisenter(OnGoodsItemClickLisenter onGoodsItemClickLisenter) {
this.onGoodsItemClickLisenter = onGoodsItemClickLisenter;
}

//接口回调
public interface OnGoodsItemClickLisenter {
public void onCallBack();
}

public GoodsAdapter(int layoutResId, @Nullable List<ShoppingCartBean.DataBean.ListBean> data) {
super(layoutResId, data);
}

@Override
protected void convert(BaseViewHolder helper, final ShoppingCartBean.DataBean.ListBean item) {

 helper.setText(R.id.tv_goodsPrice, "￥：" + item.getPrice());

 helper.setText(R.id.tv_goodsTitle, item.getTitle());
 ImageView iv_goodsIcon = helper.getView(R.id.iv_goodsIcon);
 String imagesString = item.getImages();
 String[] imagesStr = imagesString.split("\\|");
 Glide.with(mContext).load(imagesStr[0]).into(iv_goodsIcon);
 //避免焦点抢占
 final CheckBox cb_goods = helper.getView(R.id.cb_goods);
 cb_goods.setOnCheckedChangeListener(null);
 cb_goods.setChecked(item.getGoodsChecked());
 //以接口的方式把状态回传给外层
 cb_goods.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
     @Override
     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
         //Bean对象状态进行更新完毕
         item.setGoodsChecked(isChecked);
         onGoodsItemClickLisenter.onCallBack();
     }
 });
 //加减器
 CalculatorView calculatorView = helper.getView(R.id.cv_calculatorView);
 calculatorView.setOnCalCulatorLisenter(new CalculatorView.OnCalCulatorLisenter() {
     @Override
     public void onDecrese(int number) {
         //对新增的字段进行改动
         item.setDefalutNumber(number);
         onGoodsItemClickLisenter.onCallBack();
     }

     @Override
     public void onAdd(int number) {
         //对新增的字段进行改动
         item.setDefalutNumber(number);
         onGoodsItemClickLisenter.onCallBack();
     }
 });

}
}

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