京东购物车

布局：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.example.desktop.gouwuche_demo.view.activity.ShoppingActivity">    <ScrollView        android:layout_width="match_parent"        android:layout_height="match_parent">        <LinearLayout            android:layout_width="match_parent"            android:layout_height="match_parent"            android:orientation="vertical"            >            <com.example.desktop.gouwuche_demo.view.costom.MyExpanableListView                android:id="@+id/expandable_view"                android:layout_width="match_parent"                android:layout_height="wrap_content">            </com.example.desktop.gouwuche_demo.view.costom.MyExpanableListView>        </LinearLayout>    </ScrollView>    <RelativeLayout        android:id="@+id/relative_progress"        android:layout_width="match_parent"        android:layout_above="@+id/line_jie"        android:visibility="gone"        android:layout_height="match_parent">        <ProgressBar            android:layout_width="wrap_content"            android:layout_centerInParent="true"            android:layout_height="wrap_content" />    </RelativeLayout>        <LinearLayout            android:id="@+id/line_jie"            android:visibility="gone"            android:layout_width="match_parent"            android:layout_height="50dp"            android:background="#fff"            android:layout_alignParentBottom="true"            android:orientation="horizontal"            >            <CheckBox                android:id="@+id/checkAll"                android:button="@null"                android:layout_width="25dp"                android:background="@drawable/check_box_sel"                android:layout_height="25dp" />            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="全选"                />            <TextView                android:id="@+id/text_heji"                android:layout_width="0dp"                android:layout_height="wrap_content"                android:layout_marginLeft="10dp"                android:textSize="18dp"                android:layout_weight="2"                android:text="合计:￥0.00"                />            <Button                android:id="@+id/text_jiesuan"                android:layout_width="0dp"                android:background="#ff00"                android:layout_weight="1"                android:layout_height="match_parent"                android:text="去结算(0)"/>        </LinearLayout></RelativeLayout>

一级布局：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:gravity="center_vertical"    android:orientation="horizontal"    >    <CheckBox        android:id="@+id/check_group"        android:layout_width="25dp"        android:layout_height="25dp"        android:background="@drawable/check_box_sel"        android:button="@null"/>    <TextView        android:id="@+id/txt_group"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginLeft="10dp"        android:text="aaaaa"/></LinearLayout>

二级布局：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:padding="10dp"    >    <RelativeLayout        android:id="@+id/rel"        android:layout_toLeftOf="@+id/del"        android:layout_width="match_parent"        android:layout_height="match_parent">        <CheckBox            android:id="@+id/check_child"            android:layout_width="25dp"            android:layout_height="25dp"            android:background="@drawable/check_box_sel"            android:layout_centerVertical="true"            android:button="@null"/>        <ImageView            android:id="@+id/child_img"            android:layout_width="80dp"            android:layout_marginLeft="10dp"            android:layout_centerVertical="true"            android:layout_toRightOf="@id/check_child"            android:layout_height="80dp" />        <TextView            android:id="@+id/child_title"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_toRightOf="@id/child_img"            android:layout_alignTop="@id/child_img"            android:maxLines="2"            android:minLines="2"            android:text="aaaa"/>        <TextView            android:id="@+id/price"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_toRightOf="@id/child_img"            android:layout_alignBottom="@id/child_img"            android:textColor="#ff00"            android:text="aaa"/>        <LinearLayout            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_alignParentRight="true"            android:layout_alignBottom="@id/child_img"            android:orientation="horizontal">            <TextView                android:id="@+id/child_jian"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:background="@drawable/jian_line"                android:padding="5dp"                android:text="一"/>            <TextView                android:id="@+id/child_num"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:padding="5dp"                android:background="@drawable/jian_line"                android:text="1"/>            <TextView                android:id="@+id/child_jia"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:background="@drawable/jian_line"                android:padding="5dp"                android:text="十"/>        </LinearLayout>    </RelativeLayout>            <TextView                android:id="@+id/del"                android:layout_width="50dp"                android:layout_height="match_parent"                android:layout_alignParentRight="true"                android:layout_alignBottom="@id/rel"                android:layout_alignTop="@id/rel"                android:layout_marginLeft="3dp"                android:gravity="center"                android:background="#ff00"                android:text="删除"/></RelativeLayout>

MainActivity代码：

public class ShoppingActivity extends AppCompatActivity implements Shopping_view_face, View.OnClickListener {    private ExpandableListView expandableListView;    private CheckBox checkAll;    private TextView textheji;    private TextView text_jiesuan;    private ShopPresenter shopPresenter;    private int uid=2815;    private RelativeLayout relative_progress;    private ShoppingBean shoppingBean;    private LinearLayout linear_jie;    private ShopAdapter shopAdapter;    private CountAndPrice countAndPrice;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_shop);        expandableListView = (ExpandableListView) findViewById(R.id.expandable_view);        checkAll = (CheckBox) findViewById(R.id.checkAll);        textheji = (TextView) findViewById(R.id.text_heji);        text_jiesuan = (TextView) findViewById(R.id.text_jiesuan);        relative_progress = (RelativeLayout) findViewById(R.id.relative_progress);        linear_jie = (LinearLayout) findViewById(R.id.line_jie);        //去掉默认的图标        expandableListView.setGroupIndicator(null);        shopPresenter = new ShopPresenter(this);        checkAll.setOnClickListener(this);        text_jiesuan.setOnClickListener(this);    }    Handler handler=new Handler(){    @Override    public void handleMessage(Message msg) {        if (msg.what==0){            countAndPrice = (CountAndPrice) msg.obj;            text_jiesuan.setText("去结算:("+ countAndPrice.getCount()+")");            textheji.setText("合计:￥"+ countAndPrice.getPrice());        }    }};    @Override    protected void onResume() {        super.onResume();        //进度条显示        relative_progress.setVisibility(View.VISIBLE);        //请求数据        shopPresenter.setData(uid, ApiUrl.shop_url);    }    @Override    public void setVSuccess(final ShoppingBean shoppingBean) {        this.shoppingBean=shoppingBean;        runOnUiThread(new Runnable() {            @Override            public void run() {                relative_progress.setVisibility(View.GONE);                //请求数据成功后                if ("0".equals(shoppingBean.getCode())){                    //结算按钮显示                    linear_jie.setVisibility(View.VISIBLE);                    //根据子条目是否选中   决定该组是否选中   初始化isChildchecked数据                    for (int i=0;i<shoppingBean.getData().size();i++){                        if (isAllChildInGroupSelected(i)){                            shoppingBean.getData().get(i).setGroupChecked(true);                        }                    }                    //点击全选的复选框    实现全选                    checkAll.setChecked(isAllGroupChecked());                    //设置适配器                    shopAdapter = new ShopAdapter(shoppingBean,ShoppingActivity.this,relative_progress,shopPresenter,handler);                    expandableListView.setAdapter(shopAdapter);                    //二级列表全部展开                    for (int i=0;i<shoppingBean.getData().size();i++){                        expandableListView.expandGroup(i);                    }                    //根据子条目是否选中    设置价格和数量                    shopAdapter.sendPriceAndCount();                }else {                    //如果没有数据结算按钮隐藏                    linear_jie.setVisibility(View.GONE);                }            }        });    }    private boolean isAllGroupChecked() {        for (int i=0;i<shoppingBean.getData().size();i++){            //一级列表是否选中            if (!shoppingBean.getData().get(i).isGroupChecked()){                return false;            }        }        return true;    }    private boolean isAllChildInGroupSelected(int groupPosition) {        for (int i=0;i<shoppingBean.getData().get(groupPosition).getList().size();i++){            if (shoppingBean.getData().get(groupPosition).getList().get(i).getSelected()==0){                return false;            }        }        return true;    }    @Override    public void setVError(String s) {    }    @Override    public void onClick(View view) {        switch (view.getId()){            case R.id.checkAll:                shopAdapter.setAllChildState(checkAll.isChecked());                break;            case R.id.text_jiesuan:                Intent intent=new Intent(ShoppingActivity.this,ConfirmActivity.class);                intent.putExtra("uid",uid);                intent.putExtra("price",countAndPrice);                startActivity(intent);                break;        }    }}

isAllGroupChecked()
需要在bean中设置

public static class DataBean {        public boolean isGroupChecked(){        return isGroupChecked;    }    public void setGroupChecked(boolean groupChecked) {        isGroupChecked = groupChecked;    }   private boolean isGroupChecked;    private String sellerName;    private String sellerid;

适配器：

public class ShopAdapter extends BaseExpandableListAdapter{    private  Handler handler;    private  ShopPresenter shopPresenter;    private  RelativeLayout relative_progress;    ShoppingBean shoppingBean;    Context con;    private int childI;    private int size;    private int uid=2815;    private int index;    private int allsize;    public ShopAdapter(ShoppingBean shoppingBean, Context con, RelativeLayout relative_progress, ShopPresenter shopPresenter, Handler handler) {        this.shoppingBean = shoppingBean;        this.con = con;        this.relative_progress=relative_progress;        this.shopPresenter=shopPresenter;        this.handler=handler;    }    @Override    public int getGroupCount() {        return shoppingBean.getData().size();    }    @Override    public int getChildrenCount(int i) {        return shoppingBean.getData().get(i).getList().size();    }    @Override    public Object getGroup(int i) {        return shoppingBean.getData().get(i);    }    @Override    public Object getChild(int i, int i1) {        return shoppingBean.getData().get(i).getList().get(i1);    }    @Override    public long getGroupId(int i) {        return i;    }    @Override    public long getChildId(int i, int i1) {        return i1;    }    @Override    public boolean hasStableIds() {        return true;    }    @Override    public View getGroupView(int i, boolean b, View view, ViewGroup viewGroup) {        final GroupHolder gh;        if (view==null){            view = View.inflate(con, R.layout.group_item, null);            gh=new GroupHolder();            gh.check_group=(CheckBox) view.findViewById(R.id.check_group);            gh.text_group=(TextView) view.findViewById(R.id.txt_group);            view.setTag(gh);        }else {            gh= (GroupHolder) view.getTag();        }        final ShoppingBean.DataBean dataBean = shoppingBean.getData().get(i);        gh.text_group.setText(dataBean.getSellerName());        gh.check_group.setChecked(dataBean.isGroupChecked());        //点击一级的复选框        gh.check_group.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                relative_progress.setVisibility(View.VISIBLE);                size = dataBean.getList().size();                childI = 0;                //改变状态                updataAllInGroup(gh.check_group.isChecked(),dataBean);            }        });        return view;    }    /*    * 请求修改的接口实现一级中的状态改变    * */    private void updataAllInGroup(final boolean checked, final ShoppingBean.DataBean dataBean) {        ShoppingBean.DataBean.ListBean listBean = dataBean.getList().get(childI);        //?uid=71&sellerid=1&pid=1&selected=0&num=10        Map<String, String> map=new HashMap<>();        map.put("uid", String.valueOf(uid));        map.put("sellerid", String.valueOf(listBean.getSellerid()));        map.put("pid", String.valueOf(listBean.getPid()));        map.put("selected", String.valueOf(checked ? 1:0));        map.put("num", String.valueOf(listBean.getNum()));        OkHttp3Util.doPost(ApiUrl.update_url, map, new Callback() {            @Override            public void onFailure(Call call, IOException e) {            }            @Override            public void onResponse(Call call, Response response) throws IOException {                if (response.isSuccessful()){                    childI=childI+1;                    if (childI<size){                        updataAllInGroup(checked,dataBean);                    }else {                        shopPresenter.setData(uid,ApiUrl.shop_url);                    }                }            }        });    }    @Override    public View getChildView(final int i, int i1, boolean b, View view, ViewGroup viewGroup) {        ChildHolder ch;        if (view==null){            view=View.inflate(con,R.layout.child_item,null);            ch=new ChildHolder();            ch.check_child=(CheckBox) view.findViewById(R.id.check_child);            ch.image_child=(ImageView) view.findViewById(R.id.child_img);            ch.text_del=(TextView) view.findViewById(R.id.del);            ch.text_jia=(TextView) view.findViewById(R.id.child_jia);            ch.text_jian=(TextView) view.findViewById(R.id.child_jian);            ch.text_num=(TextView) view.findViewById(R.id.child_num);            ch.text_title=(TextView) view.findViewById(R.id.child_title);            ch.text_price=(TextView) view.findViewById(R.id.price);            view.setTag(ch);        }else {            ch= (ChildHolder) view.getTag();        }        final ShoppingBean.DataBean.ListBean listBean = shoppingBean.getData().get(i).getList().get(i1);        ch.text_price.setText("￥"+listBean.getBargainPrice());        ch.text_title.setText(listBean.getTitle());        ch.text_num.setText(listBean.getNum()+"");        ch.check_child.setChecked(listBean.getSelected()==0? false:true);        Glide.with(con).load(listBean.getImages().split("\\|")[0]).into(ch.image_child);        //复选框        ch.check_child.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                updateChildChecked(listBean);            }        });        //加号        ch.text_jia.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                updateChildNum(listBean,true);            }        });        //减号        ch.text_jian.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                //商品数量为1的时候直接返回                if (listBean.getNum()==1){                    return;                }                updateChildNum(listBean,false);            }        });        //删除        //https://www.zhaoapi.cn/product/deleteCart?uid=72&pid=1        ch.text_del.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                deleteChild(listBean);            }        });        return view;    }    private void deleteChild(ShoppingBean.DataBean.ListBean listBean) {        int pid = listBean.getPid();        Map<String, String> map=new HashMap<String, String>();        map.put("uid", String.valueOf(uid));        map.put("pid", String.valueOf(pid));        OkHttp3Util.doPost(ApiUrl.del_url, map, new Callback() {            @Override            public void onFailure(Call call, IOException e) {            }            @Override            public void onResponse(Call call, Response response) throws IOException {                if (response.isSuccessful()){                    String string = response.body().string();                    final DeleteBean deleteBean = new Gson().fromJson(string, DeleteBean.class);                    CommonUtils.runOnUIThread(new Runnable() {                        @Override                        public void run() {                            if ("0".equals(deleteBean.getCode())){                                Toast.makeText(con,deleteBean.getMsg(),Toast.LENGTH_SHORT).show();                                shopPresenter.setData(uid,ApiUrl.shop_url);                            }else {                                Toast.makeText(con,deleteBean.getMsg(),Toast.LENGTH_SHORT).show();                            }                        }                    });                }            }        });    }    /*    * 点击加号或减号改变接口中商品的数量    * */    private void updateChildNum(ShoppingBean.DataBean.ListBean listBean, boolean b) {        relative_progress.setVisibility(View.VISIBLE);        //?uid=71&sellerid=1&pid=1&selected=0&num=10        Map<String, String> map=new HashMap<>();        map.put("uid", String.valueOf(uid));        map.put("sellerid", String.valueOf(listBean.getSellerid()));        map.put("pid", String.valueOf(listBean.getPid()));        map.put("selected", String.valueOf(listBean.getSelected()));        if (b){            map.put("num", String.valueOf(listBean.getNum()+1));        }else {            map.put("num", String.valueOf(listBean.getNum()-1));        }        OkHttp3Util.doPost(ApiUrl.update_url, map, new Callback() {            @Override            public void onFailure(Call call, IOException e) {            }            @Override            public void onResponse(Call call, Response response) throws IOException {                if (response.isSuccessful()){                    //刷新数据                    shopPresenter.setData(uid,ApiUrl.shop_url);                }            }        });    }    /*    改变二级复选框的状态    */    private void updateChildChecked(ShoppingBean.DataBean.ListBean listBean) {        relative_progress.setVisibility(View.VISIBLE);        //?uid=71&sellerid=1&pid=1&selected=0&num=10        Map<String, String> map=new HashMap<>();        map.put("uid", String.valueOf(uid));        map.put("sellerid", String.valueOf(listBean.getSellerid()));        map.put("pid", String.valueOf(listBean.getPid()));        map.put("selected", String.valueOf(listBean.getSelected()==0 ? 1:0));        map.put("num", String.valueOf(listBean.getNum()));        OkHttp3Util.doPost(ApiUrl.update_url, map, new Callback() {            @Override            public void onFailure(Call call, IOException e) {            }            @Override            public void onResponse(Call call, Response response) throws IOException {                if (response.isSuccessful()){                        shopPresenter.setData(uid,ApiUrl.shop_url);                }            }        });    }    @Override    public boolean isChildSelectable(int i, int i1) {        return true;    }    //计算价格和数量    public void sendPriceAndCount() {        double price=0;        int count=0;        for (int i=0;i<shoppingBean.getData().size();i++){            for (int j=0;j<shoppingBean.getData().get(i).getList().size();j++){                if (shoppingBean.getData().get(i).getList().get(j).getSelected()==1){                    price+=shoppingBean.getData().get(i).getList().get(j).getBargainPrice()*shoppingBean.getData().get(i).getList().get(j).getNum();                    count+=shoppingBean.getData().get(i).getList().get(j).getNum();                }            }            //格式化   保留两位小数            DecimalFormat decimalFormat=new DecimalFormat("#.00");            String format = decimalFormat.format(price);            CountAndPrice countAndPrice=new CountAndPrice(count,format);            Message msg = Message.obtain();            msg.what=0;            msg.obj=countAndPrice;            handler.sendMessage(msg);        }    }    //全选  根据二级的状态来实现全选    public void setAllChildState(boolean checked) {        //定义一个新的集合        List<ShoppingBean.DataBean.ListBean> alllist=new ArrayList<>();        for (int i=0;i<shoppingBean.getData().size();i++){            for (int j=0;j<shoppingBean.getData().get(i).getList().size();j++){                alllist.add(shoppingBean.getData().get(i).getList().get(j));            }        }        relative_progress.setVisibility(View.VISIBLE);        allsize = alllist.size();        index=0;        updateAllChild(alllist,checked);    }    //改变所有的二级复选框的状态    private void updateAllChild(final List<ShoppingBean.DataBean.ListBean> alllist, final boolean checked) {        ShoppingBean.DataBean.ListBean listBean = alllist.get(index);        //?uid=71&sellerid=1&pid=1&selected=0&num=10        Map<String, String> map=new HashMap<>();        map.put("uid", String.valueOf(uid));        map.put("sellerid", String.valueOf(listBean.getSellerid()));        map.put("pid", String.valueOf(listBean.getPid()));        map.put("selected", String.valueOf(checked ? 1:0));        map.put("num", String.valueOf(listBean.getNum()));        OkHttp3Util.doPost(ApiUrl.update_url, map, new Callback() {            @Override            public void onFailure(Call call, IOException e) {            }            @Override            public void onResponse(Call call, Response response) throws IOException {                if (response.isSuccessful()){                    index=index+1;                    if (index<allsize){                        updateAllChild(alllist,checked);                    }else {                        shopPresenter.setData(uid,ApiUrl.shop_url);                    }                }            }        });    }    class GroupHolder{        CheckBox check_group;        TextView text_group;    }    class ChildHolder{        CheckBox check_child;        ImageView image_child;        TextView text_title;        TextView text_price;        TextView text_jian;        TextView text_num;        TextView text_jia;        TextView text_del;    }}

一些小的布局文件以及样式

textView的边框样式

<shape xmlns:android="http://schemas.android.com/apk/res/android"><stroke android:color="#000" android:width="1dp"/></shape>

复选框中的样式

<selector xmlns:android="http://schemas.android.com/apk/res/android"><item android:state_checked="true" android:drawable="@drawable/shopping_cart_checked"/>    <item android:state_checked="false" android:drawable="@drawable/shopping_cart_none_check"/>    <item android:drawable="@drawable/shopping_cart_none_check"/></selector>

二级列表放在scrollView里面要重新计算二级列表的高度

自定义二级列表，

public class MyExpanableListView extends ExpandableListView{    public MyExpanableListView(Context context) {        super(context);    }    public MyExpanableListView(Context context, AttributeSet attrs) {        super(context, attrs);    }    public MyExpanableListView(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);    }    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        int height = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE>>2,MeasureSpec.AT_MOST);        super.onMeasure(widthMeasureSpec, height);    }}