android 模仿京东购物车

权限

<uses-permission android:name="android.permission.INTERNET"></uses-permission>

依赖

compile 'com.squareup.okhttp3:okhttp:3.9.0'compile 'com.github.bumptech.glide:glide:3.3.1'

adapter---------适配器

ElvAdapter

public class ElvAdapter extends BaseExpandableListAdapter {    private final LayoutInflater inflater;    private Context context;    private List<GetCartBean.DataBean> group;    private List<List<GetCartBean.DataBean.ListBean>> child;    public ElvAdapter(Context context, List<GetCartBean.DataBean> group, List<List<GetCartBean.DataBean.ListBean>> child) {        this.context=context;        this.group=group;        this.child=child;        inflater = LayoutInflater.from(context);    }    @Override    public int getGroupCount() {        return group.size();    }    @Override    public int getChildrenCount(int groupPosition) {        return child.get(groupPosition).size();    }    @Override    public Object getGroup(int groupPosition) {        return group.get(groupPosition);    }    @Override    public Object getChild(int groupPosition, int childPosition) {        return child.get(groupPosition).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) {        View view;        final GroupViewHolder holder;        if (convertView == null) {            view = inflater.inflate(R.layout.elv_group, null);            holder = new GroupViewHolder();            holder.tv = view.findViewById(R.id.tvGroup);            holder.cbGroup = view.findViewById(R.id.cbGroup);            view.setTag(holder);        } else {            view = convertView;            holder = (GroupViewHolder) view.getTag();        }        final GetCartBean.DataBean dataBean = group.get(groupPosition);        holder.tv.setText(dataBean.getSellerName());        holder.cbGroup.setChecked(dataBean.isChecked());        holder.cbGroup.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                //需要改变三个checkbox的状态值                //1.一级列表的checkbox状态值                dataBean.setChecked(holder.cbGroup.isChecked());                //2.二级列表的checkbox状态值                setChildrenCb(groupPosition, holder.cbGroup.isChecked());                //3.全选的checkbox状态值                ((MainActivity) context).setAllChecked(isAllGroupCbChecked());                //计算钱和数量并显示                setPriceAndCount();                //刷新界面                notifyDataSetChanged();            }        });        return view;    }    @Override    public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, final View convertView, ViewGroup parent) {        View view;        final ChildViewHolder holder;        if (convertView == null) {            view = inflater.inflate(R.layout.elv_child, null);            holder = new ChildViewHolder();            holder.iv = view.findViewById(R.id.iv);            holder.tvTitle = view.findViewById(R.id.tvTitle);            holder.tvSubhead = view.findViewById(R.id.tvSubhead);            holder.tvPrice = view.findViewById(R.id.tvPrice);            holder.cbChild = view.findViewById(R.id.cbChild);            holder.btDel = view.findViewById(R.id.btDel);            holder.tvNum = view.findViewById(R.id.tvNum);            holder.ivDel = view.findViewById(R.id.ivDel);            holder.ivAdd = view.findViewById(R.id.ivAdd);            view.setTag(holder);        } else {            view = convertView;            holder = (ChildViewHolder) view.getTag();        }        final GetCartBean.DataBean.ListBean listBean = child.get(groupPosition).get(childPosition);        String images = listBean.getImages();        Glide.with(context).load(images.split("\\|")[0]).into(holder.iv);        holder.tvTitle.setText(listBean.getTitle());        holder.cbChild.setChecked(child.get(groupPosition).get(childPosition).isChecked());        holder.tvSubhead.setText(listBean.getSubhead());        holder.tvPrice.setText("￥"+listBean.getPrice());        holder.tvNum.setText(listBean.getCount() + "");        //给checkbox设置点击事件        holder.cbChild.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                //需要改变三个checkbox的状态值                //1.二级列表的checkbox状态值                listBean.setChecked(holder.cbChild.isChecked());                //2.一级列表的checkbox状态值                group.get(groupPosition).setChecked(isAllChildCbChecked(groupPosition));                //3.全选的checkbox状态值                ((MainActivity) context).setAllChecked(isAllGroupCbChecked());                //计算钱和数量并显示                setPriceAndCount();                //刷新界面                notifyDataSetChanged();            }        });        holder.ivAdd.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                //获取目前显示的值                int count = listBean.getCount();                count++;                //改变JavaBean里的状态值                listBean.setCount(count);                //计算钱和数量并显示                setPriceAndCount();                //刷新列表                notifyDataSetChanged();            }        });        holder.ivDel.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                //获取目前显示的值                int count = listBean.getCount();                if (count <= 1) {                    count = 1;                } else {                    count--;                }                //改变JavaBean里的状态值                listBean.setCount(count);                //计算钱和数量并显示                setPriceAndCount();                //刷新列表                notifyDataSetChanged();            }        });        holder.btDel.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                //其实就是删除集合                List<GetCartBean.DataBean.ListBean> listBeans = child.get(groupPosition);                if (listBeans.size() > 0) {                    listBeans.remove(childPosition);                }                if (listBeans.size() == 0) {                    child.remove(groupPosition);                    group.remove(groupPosition);                }                //计算钱和数量并显示                setPriceAndCount();                //改变全选状态                ((MainActivity) context).setAllChecked(isAllGroupCbChecked());                //刷新列表                notifyDataSetChanged();            }        });        return view;    }    @Override    public boolean isChildSelectable(int groupPosition, int childPosition) {        return false;    }    class GroupViewHolder {        TextView tv;        CheckBox cbGroup;    }    class ChildViewHolder {        ImageView iv;        TextView tvTitle;        TextView tvSubhead;        TextView tvPrice;        CheckBox cbChild;        Button btDel;        TextView tvNum;        ImageView ivDel;        ImageView ivAdd;    }    /**     * 设置一级列表对应的二级列表checkbox状态     *     * @param groupPosition     * @param bool     */    private void setChildrenCb(int groupPosition, boolean bool) {        List<GetCartBean.DataBean.ListBean> listBeans = child.get(groupPosition);        for (int i = 0; i < listBeans.size(); i++) {            listBeans.get(i).setChecked(bool);        }    }    /**     * 判断一级列表checkbox状态     *     * @return     */    private boolean isAllGroupCbChecked() {        if (group.size() == 0) {            return false;        }        for (int i = 0; i < group.size(); i++) {            if (!group.get(i).isChecked()) {                return false;            }        }        return true;    }    /**     * 判断二级列表checkbox状态     *     * @return     */    private boolean isAllChildCbChecked(int groupPosition) {        List<GetCartBean.DataBean.ListBean> listBeans = child.get(groupPosition);        for (int i = 0; i < listBeans.size(); i++) {            if (!listBeans.get(i).isChecked()) {                return false;            }        }        return true;    }    /**     * 设置钱和数量     */    private void setPriceAndCount() {        ((MainActivity) context).setPriceAndCount(compute());    }    /**     * 计算钱和数量     */    private PriceAndCount compute() {        double price = 0;        int count = 0;        for (int i = 0; i < group.size(); i++) {            List<GetCartBean.DataBean.ListBean> listBeans = child.get(i);            for (int j = 0; j < listBeans.size(); j++) {                if (listBeans.get(j).isChecked()) {                    price += listBeans.get(j).getPrice() * listBeans.get(j).getCount();                    count += listBeans.get(j).getCount();                }            }        }        return new PriceAndCount(price, count);    }    /**     * 全选或者全不选     *     * @param bool     */    public void AllOrNone(boolean bool) {        for (int i = 0; i < group.size(); i++) {            group.get(i).setChecked(bool);            setChildrenCb(i, bool);        }        setPriceAndCount();        notifyDataSetChanged();    }}

bean包

GetCartBean

public class GetCartBean {    /**     * msg : 请求成功     * code : 0     * data : [{"list":[{"bargainPrice":3455,"createtime":"2017-10-14T21:48:08","detailUrl":"https://item.m.jd.com/product/12224420750.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9106/106/1785172479/537280/253bc0ab/59bf78a7N057e5ff7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t9106/106/1785172479/537280/253bc0ab/59bf78a7N057e5ff7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8461/5/1492479653/68388/7255e013/59ba5e84N91091843.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8461/5/1492479653/68388/7255e013/59ba5e84N91091843.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8803/356/1478945529/489755/2a163ace/59ba5e84N7bb9a666.jpg!q70.jpg","num":1,"pid":50,"price":444,"pscid":39,"selected":0,"sellerid":6,"subhead":"【现货新品抢购】全面屏2.0震撼来袭，骁龙835处理器，四曲面陶瓷机","title":"小米（MI） 小米MIX2 手机 黑色 全网通 (6GB+64GB)【标配版】"}],"sellerName":"商家6","sellerid":"6"}]     */    private String msg;    private String code;    /**     * list : [{"bargainPrice":3455,"createtime":"2017-10-14T21:48:08","detailUrl":"https://item.m.jd.com/product/12224420750.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9106/106/1785172479/537280/253bc0ab/59bf78a7N057e5ff7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t9106/106/1785172479/537280/253bc0ab/59bf78a7N057e5ff7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8461/5/1492479653/68388/7255e013/59ba5e84N91091843.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8461/5/1492479653/68388/7255e013/59ba5e84N91091843.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8803/356/1478945529/489755/2a163ace/59ba5e84N7bb9a666.jpg!q70.jpg","num":1,"pid":50,"price":444,"pscid":39,"selected":0,"sellerid":6,"subhead":"【现货新品抢购】全面屏2.0震撼来袭，骁龙835处理器，四曲面陶瓷机","title":"小米（MI） 小米MIX2 手机 黑色 全网通 (6GB+64GB)【标配版】"}]     * sellerName : 商家6     * sellerid : 6     */    private List<DataBean> data;    public String getMsg() {        return msg;    }    public void setMsg(String msg) {        this.msg = msg;    }    public String getCode() {        return code;    }    public void setCode(String code) {        this.code = code;    }    public List<DataBean> getData() {        return data;    }    public void setData(List<DataBean> data) {        this.data = data;    }    public static class DataBean {        private boolean checked;//自己添加的        public boolean isChecked() {            return checked;        }        public void setChecked(boolean checked) {            this.checked = checked;        }        private String sellerName;        private String sellerid;        /**         * bargainPrice : 3455.0         * createtime : 2017-10-14T21:48:08         * detailUrl : https://item.m.jd.com/product/12224420750.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends         * images : https://m.360buyimg.com/n0/jfs/t9106/106/1785172479/537280/253bc0ab/59bf78a7N057e5ff7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t9106/106/1785172479/537280/253bc0ab/59bf78a7N057e5ff7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8461/5/1492479653/68388/7255e013/59ba5e84N91091843.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8461/5/1492479653/68388/7255e013/59ba5e84N91091843.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8803/356/1478945529/489755/2a163ace/59ba5e84N7bb9a666.jpg!q70.jpg         * num : 1         * pid : 50         * price : 444.0         * pscid : 39         * selected : 0         * sellerid : 6         * subhead : 【现货新品抢购】全面屏2.0震撼来袭，骁龙835处理器，四曲面陶瓷机         * title : 小米（MI） 小米MIX2 手机 黑色 全网通 (6GB+64GB)【标配版】         */        private List<ListBean> list;        public String getSellerName() {            return sellerName;        }        public void setSellerName(String sellerName) {            this.sellerName = sellerName;        }        public String getSellerid() {            return sellerid;        }        public void setSellerid(String sellerid) {            this.sellerid = sellerid;        }        public List<ListBean> getList() {            return list;        }        public void setList(List<ListBean> list) {            this.list = list;        }        public static class ListBean {            private boolean checked;//自己添加的            private int count = 1;//自己添加的            public boolean isChecked() {                return checked;            }            public void setChecked(boolean checked) {                this.checked = checked;            }            public int getCount() {                return count;            }            public void setCount(int count) {                this.count = count;            }            private double bargainPrice;            private String createtime;            private String detailUrl;            private String images;            private int num;            private int pid;            private double price;            private int pscid;            private int selected;            private int sellerid;            private String subhead;            private String title;            public double getBargainPrice() {                return bargainPrice;            }            public void setBargainPrice(double bargainPrice) {                this.bargainPrice = bargainPrice;            }            public String getCreatetime() {                return createtime;            }            public void setCreatetime(String createtime) {                this.createtime = createtime;            }            public String getDetailUrl() {                return detailUrl;            }            public void setDetailUrl(String detailUrl) {                this.detailUrl = detailUrl;            }            public String getImages() {                return images;            }            public void setImages(String images) {                this.images = images;            }            public int getNum() {                return num;            }            public void setNum(int num) {                this.num = num;            }            public int getPid() {                return pid;            }            public void setPid(int pid) {                this.pid = pid;            }            public double getPrice() {                return price;            }            public void setPrice(double price) {                this.price = price;            }            public int getPscid() {                return pscid;            }            public void setPscid(int pscid) {                this.pscid = pscid;            }            public int getSelected() {                return selected;            }            public void setSelected(int selected) {                this.selected = selected;            }            public int getSellerid() {                return sellerid;            }            public void setSellerid(int sellerid) {                this.sellerid = sellerid;            }            public String getSubhead() {                return subhead;            }            public void setSubhead(String subhead) {                this.subhead = subhead;            }            public String getTitle() {                return title;            }            public void setTitle(String title) {                this.title = title;            }        }    }}

PriceAndCount

public class PriceAndCount {    private double price;    private int count;    public PriceAndCount(double price, int count) {        this.price = price;        this.count = count;    }    public double getPrice() {        return price;    }    public void setPrice(double price) {        this.price = price;    }    public int getCount() {        return count;    }    public void setCount(int count) {        this.count = count;    }}

model层

CallBack

public interface CallBack {    void onResponse(Object o);    void onFailure(Exception e);}

GsonUtils

public class GsonUtils {    private static Gson instance;    private GsonUtils(){    }    public static Gson getInstance(){        if (instance == null) {            instance = new Gson();        }        return instance;    }}

HttpsUrl

public class HttpsUrl {    private Handler handler = new Handler();    private static volatile HttpsUrl instance;    public HttpsUrl(){    }    public static HttpsUrl getInstance(){        if(null == instance){            synchronized (HttpsUrl.class){                if(instance==null){                    instance = new HttpsUrl();                }            }        }        return instance;    }    public void get(String url, Map<String , String> map, final CallBack callback, final Class cls){        if(TextUtils.isEmpty(url)){            return;        }        StringBuffer sb = new StringBuffer();        sb.append(url);        if(url.contains("?")){            if (url.indexOf("?")==url.length()-1) {            }else{                sb.append("&");            }        }else{            sb.append("?");        }        for(Map.Entry<String ,String > entry:map.entrySet()){            sb.append(entry.getKey())                    .append("=")                    .append(entry.getValue())                    .append("&");        }        if(sb.indexOf("&") != -1){            sb.deleteCharAt(sb.lastIndexOf("&"));        }        OkHttpClient client = new OkHttpClient();        final Request request = new Request.Builder()                .get()                .url(sb.toString())                .build();        Call call = client.newCall(request);        call.enqueue(new okhttp3.Callback() {            @Override            public void onFailure(Call call, final IOException e) {                handler.post(new Runnable() {                    @Override                    public void run() {                        callback.onFailure(e);                    }                });            }            @Override            public void onResponse(Call call, Response response) throws IOException {                final String s = response.body().string();                Log.i("ddd",s);                handler.post(new Runnable() {                    private Object o;                    @Override                    public void run() {                        if(TextUtils.isEmpty(s)){                            o = null;                        }else{                            o = GsonUtils.getInstance().fromJson(s,cls);                        }                        callback.onResponse(o);                    }                });            }        });    }}

persenter层

GetCartPresenter

public class GetCartPresenter {    private ICartView icv;    public GetCartPresenter(ICartView icv) {        this.icv = icv;    }    public void getNews(){        HashMap<String , String> map = new HashMap<>();        map.put("source","android");        map.put("uid","1234");        map.put("pid","71");        HttpsUrl.getInstance().get("http://120.27.23.105/product/getCarts", map, new CallBack() {            @Override            public void onResponse(Object o) {                GetCartBean cartBean = (GetCartBean) o;                if(cartBean!=null){                    List<GetCartBean.DataBean> group = cartBean.getData();                    List<List<GetCartBean.DataBean.ListBean>> child = new ArrayList<>();                    for (int i = 0; i < group.size(); i++){                        child.add(group.get(i).getList());                    }                    icv.show(group,child);                }            }            @Override            public void onFailure(Exception e) {            }        },GetCartBean.class);    }}

ICartView

public interface ICartView {    void show(List<GetCartBean.DataBean> group, List<List<GetCartBean.DataBean.ListBean>> child);}

MainActivity

public class MainActivity extends AppCompatActivity implements ICartView{    private ImageView mBack;    /**     * 编辑     */    private TextView mEdit;    private LinearLayout mTopBar;    private ExpandableListView mElv;    /**     * 全选     */    private CheckBox mCb;    /**     * 合计:     */    private TextView mTvTotal;    /**     * 去结算(0)     */    private TextView mTvCount;    private ElvAdapter elvAdapter;    private GetCartPresenter presenter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();        presenter = new GetCartPresenter(this);        presenter.getNews();        mCb.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                elvAdapter.AllOrNone(mCb.isChecked());            }        });    }    private void initView() {        mBack = (ImageView) findViewById(R.id.back);        mEdit = (TextView) findViewById(R.id.edit);        mTopBar = (LinearLayout) findViewById(R.id.top_bar);        mElv = (ExpandableListView) findViewById(R.id.elv);        mCb = (CheckBox) findViewById(R.id.cb);        mTvTotal = (TextView) findViewById(R.id.tvTotal);        mTvCount = (TextView) findViewById(R.id.tvCount);    }    public void show(List<GetCartBean.DataBean> group, List<List<GetCartBean.DataBean.ListBean>> child) {        for (int i = 0; i < group.size(); i++) {            List<GetCartBean.DataBean.ListBean> list = group.get(i).getList();            if (list.size() == 0) {                group.remove(i);                child.remove(i);            }        }        elvAdapter = new ElvAdapter(this,group,child);        mElv.setGroupIndicator(null);        mElv.setAdapter(elvAdapter);        for (int i = 0; i < group.size(); i++) {            mElv.expandGroup(i);        }    }    public void setPriceAndCount(PriceAndCount priceAndCount) {        mTvTotal.setText("合计："+"￥" + priceAndCount.getPrice());        mTvCount.setText("去结算(" + priceAndCount.getCount() + ")");    }    public void setAllChecked(boolean bool) {        mCb.setChecked(bool);    }}

ic_launcher_background    -------加两张图片

<?xml version="1.0" encoding="utf-8"?><vector xmlns:android="http://schemas.android.com/apk/res/android"    android:width="108dp"    android:height="108dp"    android:viewportHeight="108"    android:viewportWidth="108">    <path        android:fillColor="#26A69A"        android:pathData="M0,0h108v108h-108z" />    <path        android:fillColor="#00000000"        android:pathData="M9,0L9,108"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M19,0L19,108"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M29,0L29,108"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M39,0L39,108"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M49,0L49,108"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M59,0L59,108"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M69,0L69,108"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M79,0L79,108"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M89,0L89,108"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M99,0L99,108"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M0,9L108,9"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M0,19L108,19"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M0,29L108,29"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M0,39L108,39"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M0,49L108,49"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M0,59L108,59"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M0,69L108,69"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M0,79L108,79"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M0,89L108,89"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M0,99L108,99"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M19,29L89,29"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M19,39L89,39"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M19,49L89,49"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M19,59L89,59"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M19,69L89,69"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M19,79L89,79"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M29,19L29,89"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M39,19L39,89"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M49,19L49,89"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M59,19L59,89"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M69,19L69,89"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" />    <path        android:fillColor="#00000000"        android:pathData="M79,19L79,89"        android:strokeColor="#33FFFFFF"        android:strokeWidth="0.8" /></vector>

main布局

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="match_parent">    <LinearLayout        android:id="@+id/top_bar"        android:layout_width="match_parent"        android:layout_height="48dp"        android:background="#f7f7f7"        android:orientation="vertical" >        <RelativeLayout            android:layout_width="match_parent"            android:layout_height="48dp"            android:background="@android:color/transparent"            android:orientation="vertical" >            <ImageView                android:id="@+id/back"                android:layout_width="48dp"                android:layout_height="48dp"                android:layout_alignParentLeft="true"                android:layout_gravity="center_vertical"                android:padding="12dp" />            <TextView                android:layout_width="match_parent"                android:layout_height="wrap_content"                android:gravity="center"                android:minHeight="48dp"                android:text="购物车"                android:textColor="#1a1a1a"                android:textSize="16sp" />            <TextView                android:id="@+id/edit"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_alignParentRight="true"                android:layout_marginRight="40dp"                android:gravity="center"                android:minHeight="48dp"                android:text="编辑"                android:textColor="#1a1a1a"                android:textSize="14sp"                android:visibility="visible" />        </RelativeLayout>    </LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="match_parent"        android:orientation="vertical">        <ExpandableListView            android:id="@+id/elv"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_weight="1" />        <RelativeLayout            android:layout_width="match_parent"            android:layout_height="40dp">            <CheckBox                android:id="@+id/cb"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_centerVertical="true"                android:text="全选" />            <TextView                android:id="@+id/tvTotal"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_centerVertical="true"                android:layout_marginLeft="15dp"                android:layout_toRightOf="@id/cb"                android:text="合计:"                android:textColor="#F00" />            <TextView                android:id="@+id/tvCount"                android:layout_width="100dp"                android:layout_height="match_parent"                android:layout_alignParentRight="true"                android:layout_centerVertical="true"                android:background="#ff0000"                android:gravity="center"                android:text="去结算(0)"                android:textColor="#ffffff" />        </RelativeLayout>    </LinearLayout></LinearLayout>

elv_child

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="120dp"    android:descendantFocusability="blocksDescendants"    android:gravity="center_vertical"    android:orientation="horizontal"    android:paddingLeft="50dp">    <CheckBox        android:id="@+id/cbChild"        android:layout_width="wrap_content"        android:layout_height="wrap_content" />    <ImageView        android:id="@+id/iv"        android:layout_width="100dp"        android:layout_height="100dp" />    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_weight="1"        android:orientation="vertical">        <TextView            android:id="@+id/tvTitle"            android:layout_width="wrap_content"            android:layout_height="wrap_content" />        <TextView            android:id="@+id/tvSubhead"            android:layout_width="wrap_content"            android:layout_height="wrap_content" />        <TextView            android:id="@+id/tvSubhead"            android:layout_width="wrap_content"            android:layout_height="wrap_content" />        <LinearLayout            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:gravity="center_vertical"            android:orientation="horizontal">            <TextView                android:id="@+id/tvPrice"                android:textColor="#F00"                android:layout_width="wrap_content"                android:layout_height="wrap_content" />            <ImageView                android:layout_marginLeft="10dp"                android:id="@+id/ivDel"                android:layout_width="25dp"                android:layout_height="25dp"                android:background="@drawable/iv_del" />            <TextView                android:id="@+id/tvNum"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:textSize="25sp"                android:layout_marginLeft="3dp"                android:layout_marginRight="3dp"                android:text="1"/>            <ImageView                android:id="@+id/ivAdd"                android:layout_width="25dp"                android:layout_height="25dp"                android:background="@drawable/iv_add" />        </LinearLayout>    </LinearLayout>    <Button        android:id="@+id/btDel"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="删除" /></LinearLayout>

elv_group

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:gravity="center_vertical"    android:orientation="horizontal">    <CheckBox        android:id="@+id/cbGroup"        android:layout_width="wrap_content"        android:layout_height="wrap_content" />    <TextView        android:id="@+id/tvGroup"        android:layout_width="match_parent"        android:layout_height="40dp"        android:gravity="center_vertical" /></LinearLayout>