仿京东中购物车列表模块的实现【以及通过Builder的方式创建dialog弹窗 链式调用】

package com.json.car; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseExpandableListAdapter; import android.widget.ImageView; import android.widget.TextView; import java.util.List; public class GoodsExpandableListAdapter extends BaseExpandableListAdapter{ private Context context; private List<GoodsBean> lists; private LayoutInflater inflater; private CustomDialog dialog; private OnSelectedAllListner listener;//回调接口 private boolean isSelectedAll = false; public GoodsExpandableListAdapter(Context context) { this.context = context; inflater = LayoutInflater.from(context); } public void refreshDatas(List<GoodsBean> lists){ this.lists = lists; notifyDataSetChanged(); } @Override public int getGroupCount() { return null != lists ? lists.size() : 0; } @Override public int getChildrenCount(int groupPosition) { return null != lists ? lists.get(groupPosition).getGoods().size() : 0; } @Override public Object getGroup(int groupPosition) { return lists.get(groupPosition); } @Override public Object getChild(int groupPosition, int childPosition) { return lists.get(groupPosition).getGoods().get(childPosition); } @Override public long getGroupId(int groupPosition) { return groupPosition; } @Override public long getChildId(int groupPosition, int childPosition) { return childPosition; } @Override public boolean hasStableIds() { return false; } @Override public View getGroupView(final int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { final GroupViewHolder holder; if(convertView == null){ convertView = inflater.inflate(R.layout.item_group_listview, parent, false); holder = new GroupViewHolder(); holder.tvShopName = (TextView) convertView.findViewById(R.id.tv_shopName); holder.ivGroupCheck = (ImageView) convertView.findViewById(R.id.iv_check_group); convertView.setTag(holder); }else{ holder = (GroupViewHolder) convertView.getTag(); } final GoodsBean bean = lists.get(groupPosition); holder.tvShopName.setText(bean.getShopName()); selectedItem(bean.isGroupSelected(), holder.ivGroupCheck); holder.ivGroupCheck.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { boolean isGroupSelected = !bean.isGroupSelected(); bean.setGroupSelected(isGroupSelected);//组的状态 for(int i = 0; i < lists.get(groupPosition).getGoods().size(); i++){ lists.get(groupPosition).getGoods().get(i).setChildSelected(isGroupSelected);//子的状态 } //判断所有组是不是都选中了，都选中的话，通过接口告诉主界面的全选控件，并让其为选中状态的图片 boolean isAllGroup = isAllGroupSelected(lists); if(listener != null){ listener.isSelectedAll(isAllGroup); } notifyDataSetChanged(); } }); return convertView; } @Override public View getChildView(final int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { final ChildViewHolder holder; if(convertView == null){ convertView = inflater.inflate(R.layout.item_child_listview, parent, false); holder = new ChildViewHolder(); holder.ivGoodsUrl = (ImageView) convertView.findViewById(R.id.iv_goods_url); holder.tvGoodsName = (TextView) convertView.findViewById(R.id.tv_goods_name); holder.tvGoodsOriPrice = (TextView) convertView.findViewById(R.id.tv_goods_ori_price); holder.tvGoodsPrice = (TextView) convertView.findViewById(R.id.tv_goods_price); holder.tvGoodsNum = (TextView) convertView.findViewById(R.id.tv_goods_num); holder.ivChildCheck = (ImageView) convertView.findViewById(R.id.iv_check_child); convertView.setTag(holder); }else{ holder = (ChildViewHolder) convertView.getTag(); } final GoodsBean.GoodsDetailsBean bean = lists.get(groupPosition).getGoods().get(childPosition); holder.tvGoodsName.setText(bean.getGoodsName()); holder.tvGoodsOriPrice.setText(bean.getGoodsOriPrice()); holder.tvGoodsPrice.setText(bean.getGoodsPrice()); holder.tvGoodsNum.setText(bean.getGoodsNum()); //这里用本地的测试图片，正式开发则需要从网络取 holder.ivGoodsUrl.setImageResource(bean.getGoodsUrl()); selectedItem(bean.isChildSelected(), holder.ivChildCheck); holder.ivChildCheck.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { boolean isChildSelected = !bean.isChildSelected(); bean.setChildSelected(isChildSelected);//子项的选中与未选中 //还需要进一步处理子项状态导致的组的状态问题，如果某一组的子项都选中的话，那么所在的组也为选中状态 boolean isSelectedGroup = isAllChildSelected(lists.get(groupPosition).getGoods()); lists.get(groupPosition).setGroupSelected(isSelectedGroup); //因为子项状态会影响组的状态，判断所有组是不是都选中了，都选中的话，通过接口告诉主界面的全选控件，并让其为选中状态的图片 boolean isAllGroup = isAllGroupSelected(lists); if(listener != null){ listener.isSelectedAll(isAllGroup); } notifyDataSetChanged(); } }); convertView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //弹窗 dialog dialog = new CustomDialog.Builder(context) .setContent("你确定要删除该商品吗？") .setLeftText("容朕三思") .setRightText("朕意已决") .setLeftOnclick(new View.OnClickListener() { @Override public void onClick(View v) { dialog.dismiss(); } }) .setRightOnClick(new View.OnClickListener() { @Override public void onClick(View v) { dialog.dismiss(); } }) .create(); dialog.show(); } }); return convertView; } @Override public boolean isChildSelectable(int groupPosition, int childPosition) { return false; } class GroupViewHolder{ TextView tvShopName;//店铺名称 ImageView ivGroupCheck;//选择按钮 } class ChildViewHolder{ ImageView ivGoodsUrl;//商品图片url TextView tvGoodsName;//商品名称 TextView tvGoodsOriPrice;//原价 TextView tvGoodsPrice;//实际价格 TextView tvGoodsNum;//购买数量 ImageView ivChildCheck;//选择按钮 } //选中状态的相关判断处理 /** * 选中与未选中状态下对应的图片状态的