效果图： 
需要的依赖：
//retrofit2的依赖
compile 'com.squareup.retrofit2:retrofit:2.3.0'
compile 'com.squareup.retrofit2:converter-gson:2.3.0'
compile 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'
//rxJava2的依赖
compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
// Because RxAndroid releases are few and far between, it is recommended you also
// explicitly depend on RxJava's latest version for bug fixes and new features.
compile 'io.reactivex.rxjava2:rxjava:2.1.7'
//拦截器的依赖
compile 'com.squareup.okhttp3:logging-interceptor:3.9.1'
//banner的依赖
compile 'com.youth.banner:banner:1.4.10'
//eventbus的依赖
compile 'org.greenrobot:eventbus:3.0.0'
//Fresco的依赖
compile 'com.facebook.fresco:fresco:1.5.0'
//xrecyclerview的依赖
compile 'com.jcodecraeer:xrecyclerview:1.3.2'—————————————XML布局———————————-
activity_cart.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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" android:orientation="vertical" tools:context="com.example.electricitydemo.ui.cart.CartActivity">
<RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content">
<TextView android:layout_width="30dp" android:layout_height="30dp" android:layout_centerVertical="true" android:background="@drawable/leftjiantou" />
<TextView android:layout_width="match_parent" android:layout_height="40dp" android:gravity="center" android:text="购物车" android:textColor="#000" android:textSize="25sp" />
<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_centerVertical="true" android:layout_marginRight="20dp" android:text="编辑" />
</RelativeLayout>
<View android:layout_width="match_parent" android:layout_height="2dp" android:background="#000" />
<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="70dp" android:layout_alignParentBottom="true" android:background="@android:color/white" android:gravity="center_vertical">
<CheckBox android:id="@+id/cb_All" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_marginLeft="10dp" android:checked="true" android:focusable="false" />
<TextView android:id="@+id/tv_quxuan" android:layout_width="wrap_content" android:layout_height="50dp" android:layout_centerVertical="true" android:layout_marginLeft="10dp" android:layout_toRightOf="@+id/cb_All" android:gravity="center_vertical" android:text="全选" android:textSize="20sp" />
<LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_toRightOf="@id/tv_quxuan" android:orientation="vertical">
<TextView android:id="@+id/tv_price" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:text="合计 ：￥550.90" android:textSize="25dp" />
<TextView android:id="@+id/tv_carts_price" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:text="总额:582.70 立减：￥31.80" />
</LinearLayout>
<TextView android:id="@+id/tv_num" android:layout_width="120dp" android:layout_height="match_parent" android:layout_alignParentRight="true" android:background="@android:color/holo_red_dark" android:gravity="center" android:padding="10dp" android:text="去结算(0)" android:textColor="@android:color/white" />
</RelativeLayout>
</LinearLayout>
cart_child_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="120dp" android:orientation="horizontal">
<CheckBox android:id="@+id/cb_child" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="30dp" android:layout_marginLeft="20dp" android:layout_marginTop="45dp" android:focusable="false" />
<com.facebook.drawee.view.SimpleDraweeView android:id="@+id/child_sdv" android:layout_width="100dp" android:layout_height="match_parent" android:layout_marginLeft="8dp" app:placeholderImage="@mipmap/ic_launcher_round" />
<LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginLeft="8dp" android:layout_weight="1" android:orientation="vertical" android:padding="10dp">
<TextView android:id="@+id/child_tit" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="123" android:textStyle="bold" />
<TextView android:id="@+id/child_info" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:text="颜色:黑；尺寸:23L" />
<RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="30dp" android:orientation="horizontal">
<TextView android:id="@+id/child_price" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="￥" android:textColor="@color/colorAccent" />
<com.example.electricitydemo.ui.cart.AddDeleteView android:id="@+id/adv_main" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_weight="1" app:left_text="-" app:middle_text="1" app:right_text="+" />
</RelativeLayout>
</LinearLayout>
<View android:layout_width="1dp" android:layout_height="match_parent" android:layout_marginBottom="10dp" android:layout_marginTop="10dp" android:background="#000" />
<TextView android:id="@+id/del" android:layout_width="20dp" android:layout_height="match_parent" android:gravity="center" android:text="删除" android:layout_margin="7dp" android:textColor="#000" android:textSize="18sp" />
</LinearLayout>cart_group_item.xml
<?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="100dp" android:orientation="horizontal">
<CheckBox android:id="@+id/cb_group" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="30dp" android:layout_marginLeft="10dp" android:layout_marginTop="30dp" android:focusable="false" />
<TextView android:id="@+id/gou_dian" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="20dp" android:layout_marginTop="30dp" android:text="标记" />
</LinearLayout>自定义View的布局
adddelete_item.xml
<?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="match_parent">
<TextView android:id="@+id/tv_delete" android:layout_width="31dp" android:layout_height="31dp" android:background="#999999" android:gravity="center" android:text="-" android:textSize="20sp" />
<EditText android:id="@+id/ed_num" android:layout_width="30dp" android:layout_height="30dp" android:background="@null" android:gravity="center" />
<TextView android:id="@+id/tv_add" android:layout_width="31dp" android:layout_height="31dp" android:background="#999999" android:gravity="center" android:text="+" android:textSize="20sp" />
</LinearLayout>——————————–自定义View————————————-
先在values下创建attrs.xml文件
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="AddDeleteViewStyle">
<attr name="left_text" format="string" />
<attr name="right_text" format="string" />
<attr name="middle_text" format="string" />
</declare-styleable>
</resources>然后创建AddDeleteView，继承LinearLayout
public class AddDeleteView extends LinearLayout {
private OnAddDelClickListener listener;
private EditText etNumber;
//对外提供一个点击的回调接口
public interface OnAddDelClickListener {
void onAddClick(View v);
void onDelClick(View v);
}
public void setOnAddDelClickListener(OnAddDelClickListener listener) {
if (listener != null) {
this.listener = listener;
}
}
public AddDeleteView(Context context) {
this(context, null);
}
public AddDeleteView(Context context, @Nullable AttributeSet attrs) {
this(context, attrs, 0);
}
public AddDeleteView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
initView(context, attrs, defStyleAttr);
}
private void initView(Context context, AttributeSet attrs, int defStyleAttr) {
View.inflate(context, R.layout.adddelete_item, this);
TextView txtDelete = (TextView) findViewById(R.id.tv_delete);
TextView txtAdd = (TextView) findViewById(R.id.tv_add);
etNumber = (EditText) findViewById(R.id.ed_num);
TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.AddDeleteViewStyle);
String leftText = typedArray.getString(R.styleable.AddDeleteViewStyle_left_text);
String rightText = typedArray.getString(R.styleable.AddDeleteViewStyle_right_text);
String middleText = typedArray.getString(R.styleable.AddDeleteViewStyle_middle_text);
txtDelete.setText(leftText);
txtAdd.setText(rightText);
etNumber.setText(middleText);
//回收
typedArray.recycle();
txtDelete.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
listener.onDelClick(view);
}
});
txtAdd.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
listener.onAddClick(view);
}
});
}
//对外提供一个修改数字的方法
public void setNumber(int number) {
if (number > 0) {
etNumber.setText(number + "");
}
}
//对外提供一个获取当前数字的方法
public int getNumber() {
String string = etNumber.getText().toString();
int i = Integer.parseInt(string);
return i;
}
} ------------------网络请求工具类-----------------
UrlsAPI
public class UrlsAPI {
public static final String BASE_URL = "https://www.zhaoapi.cn/";
//商品详情
public static final String PRODUCTDETAIL = "product/getProductDetail";
//添加购物车
public static final String ADDCART = "product/addCart";
//查询购物车
public static final String GETCARTS = "product/getCarts";
//删除购物车
public static final String DELETECART = "product/deleteCart";
}APIService
public interface APIService {
//商品列表
@GET(UrlsAPI.PRODUCTDETAIL)
Observable<ProductDetailBean> getProductDetail(@Query("pid") String pid);
//添加购物车
@GET(UrlsAPI.ADDCART)
Observable<AddCartBean> getAddCart(@Query("uid") String uid, @Query("pid") String pid);
//查询购物车
@GET(UrlsAPI.GETCARTS)
Observable<CartBean> getCarts(@Query("uid") String uid);
//删除购物车
@GET(UrlsAPI.DELETECART)
Observable<CartBean> deleteCarts(@Query("uid") String uid, @Query("pid") String pid);
}RetrofitHelper
public class RetrofitHelper {
private static Retrofit retrofit;
private static APIService serviceApi;
/** * 初始化Retrofit 单例模式 */
private static Retrofit getRetrofit() {
//线程安全
if (retrofit == null) {
synchronized (RetrofitHelper.class) {
if (retrofit == null) {
//设置拦截器
HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
logging.setLevel(HttpLoggingInterceptor.Level.BODY);
//初始化OkHttpClient
OkHttpClient client = new OkHttpClient.Builder()
.addInterceptor(logging)//添加拦截器
.addInterceptor(new MyInterceptor())
.connectTimeout(60, TimeUnit.SECONDS)//设置连接超时
.readTimeout(15, TimeUnit.SECONDS)
.build();
//初始化Retrofit
retrofit = new Retrofit.Builder()
.baseUrl(UrlsAPI.BASE_URL)
.client(client)
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.build();
}
}
}
return retrofit;
}
public static APIService getServiceApi() {
if (serviceApi == null) {
synchronized (RetrofitHelper.class) {
if (serviceApi == null) {
serviceApi = getRetrofit().create(APIService.class);
}
}
}
return serviceApi;
}
/** * 添加公共参数拦截器 */
static class MyInterceptor implements Interceptor {
@Override
public Response intercept(Chain chain) throws IOException {
Request request = chain.request();
HttpUrl httpUrl = request
.url()
.newBuilder()
.addQueryParameter("source", "android")
.build();
Request requestNew = request
.newBuilder()
.url(httpUrl)
.build();
return chain.proceed(requestNew);
}
}
}OnNetListener
public interface OnNetListener<T> {
public void onSuccess(T t);
public void onFailure(Exception e);
} ---------------Model层---------------
ICartModel
public interface ICartModel {
public void getCart(String uid, OnNetListener<CartBean> onNetListener);
}CartModel
public class CartModel implements ICartModel {
@Override
public void getCart(String uid, final OnNetListener<CartBean> onNetListener) {
ServiceApi serviceApi = RetrofitHelper.getAPI();
serviceApi.getCarts(uid)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<CartBean>() {
@Override
public void accept(CartBean cartBean) throws Exception {
onNetListener.onSuccess(cartBean);
}
}, new Consumer<Throwable>() {
@Override
public void accept(Throwable throwable) throws Exception {
onNetListener.onFailure(throwable);
}
});
}
} ---------------Presenter层---------------
public class CartPresenter {
private final ICartModel iCartModel;
private ICartView iCartView;
public CartPresenter(ICartView iCartView) {
this.iCartView = iCartView;
iCartModel = new CartModel();
}
public void getCarts() {
iCartModel.getCart("71", new OnNetListener<CartBean>() {
@Override
public void onSuccess(CartBean cartBean) {
iCartView.getCarts(cartBean);
}
@Override
public void onFailure(Exception e) {
}
});
}
@Override
public void detachView() {
//防止内存泄露
if (iCartView != null) {
iCartView = null;
System.gc();
}
}
} ---------------View层---------------
public interface ICartView {
public void getCarts(CartBean cartBean);
}MessagEvent
public class MessageEvent {
private boolean checked;
public boolean isChecked() {
return checked;
}
public void setChecked(boolean checked) {
this.checked = checked;
}
}PriceAndCountEvent
public class PriceAndCountEvent {
private int price;
private int count;
public int getPrice() {
return price;
}
public void setPrice(int price) {
this.price = price;
}
public int getCount() {
return count;
}
public void setCount(int count) {
this.count = count;
}
}适配器
public class MyElvAdapter extends BaseExpandableListAdapter {
private Context context;
private List<CartBean.DataBean> groupList;
private List<List<CartBean.DataBean.ListBean>> childList;
private LayoutInflater inflater;
public MyElvAdapter(Context context, List<CartBean.DataBean> groupList, List<List<CartBean.DataBean.ListBean>> childList) {
this.context = context;
this.groupList = groupList;
this.childList = childList;
inflater = LayoutInflater.from(context);
}
@Override
public int getGroupCount() {
return groupList.size();
}
@Override
public int getChildrenCount(int groupPosition) {
return childList.get(groupPosition).size();
}
@Override
public Object getGroup(int groupPosition) {
return groupList.get(groupPosition);
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return childList.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) {
holder = new GroupViewHolder();
view = inflater.inflate(R.layout.cart_group_item, null);
holder.cb_group = view.findViewById(R.id.cb_group);
holder.tv_dian = view.findViewById(R.id.gou_dian);
view.setTag(holder);
} else {
view = convertView;
holder = (GroupViewHolder) view.getTag();
}
final CartBean.DataBean dataBean = groupList.get(groupPosition);
holder.cb_group.setChecked(dataBean.isChecked());
holder.tv_dian.setText(dataBean.getSellerName());
//一级列表的Checkbox
holder.cb_group.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dataBean.setChecked(holder.cb_group.isChecked());
//当一级选中时，改变二级列表CheckBox状态
changeChildCbState(groupPosition, holder.cb_group.isChecked());
//将对应的数量和价格传到PriceAndCountEvent
EventBus.getDefault().post(computer());
//当一级的全部选中是，改变全选CheckBox状态
changeAllCbState(isAllGroupCbSelected());
//刷新列表
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) {
holder = new ChildViewHolder();
view = inflater.inflate(R.layout.cart_child_item, null);
holder.cb_child = view.findViewById(R.id.cb_child);
holder.del = view.findViewById(R.id.del);
holder.sdv = view.findViewById(R.id.child_sdv);
holder.adv_main = view.findViewById(R.id.adv_main);
holder.tv_info = view.findViewById(R.id.child_info);
holder.tv_price = view.findViewById(R.id.child_price);
holder.tv_tit = view.findViewById(R.id.child_tit);
view.setTag(holder);
} else {
view = convertView;
holder = (ChildViewHolder) view.getTag();
}
final CartBean.DataBean.ListBean listBean = childList.get(groupPosition).get(childPosition);
holder.cb_child.setChecked(listBean.isChecked());
String[] strings = listBean.getImages().split("\\!");
holder.sdv.setImageURI(strings[0]);
holder.tv_tit.setText(listBean.getSubhead());
holder.tv_info.setText(listBean.getTitle());
holder.tv_price.setText("￥" + listBean.getBargainPrice());
//给二级CheckBox设置点击事件
holder.cb_child.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//设置该条目对象里的checked属性值
listBean.setChecked(holder.cb_child.isChecked());
PriceAndCountEvent priceAndCountEvent = computer();
EventBus.getDefault().post(priceAndCountEvent);
if (holder.cb_child.isChecked()) {
//当前checkbox是选中状态
if (isAllChildCbSelected(groupPosition)) {
changeGroupCbState(groupPosition, true);
changeAllCbState(isAllGroupCbSelected());
}
} else {
changeGroupCbState(groupPosition, false);
changeAllCbState(isAllGroupCbSelected());
}
notifyDataSetChanged();
}
});
//自定义View加减号
holder.adv_main.setOnAddDelClickListener(new AddDeleteView.OnAddDelClickListener() {
@Override
public void onAddClick(View v) {
//加号
int num = listBean.getNum();
holder.adv_main.setNumber(++num);
listBean.setNum(num);
if (holder.cb_child.isChecked()) {
PriceAndCountEvent priceAndCountEvent = computer();
EventBus.getDefault().post(computer());
}
}
@Override
public void onDelClick(View v) {
//减号
int num = listBean.getNum();
if (num == 1) {
return;
}
holder.adv_main.setNumber(--num);
listBean.setNum(num);
if (holder.cb_child.isChecked()) {
PriceAndCountEvent priceAndCountEvent = computer();
EventBus.getDefault().post(computer());
}
}
});
holder.del.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setIcon(R.mipmap.ic_launcher_round)
.setTitle("删除商品")
.setMessage("确定删除商品吗？");
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
APIService apiService = RetrofitHelper.getServiceApi();
apiService.deleteCarts("71",childList.get(groupPosition).get(childPosition).getPid()+"")
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<CartBean>() {
@Override
public void accept(CartBean cartBean) throws Exception {
if (cartBean.getCode().equals("0")){
List<CartBean.DataBean.ListBean> datasBeen = childList.get(groupPosition);
CartBean.DataBean.ListBean remove = datasBeen.remove(childPosition);
if (datasBeen.size() == 0) {
childList.remove(groupPosition);
groupList.remove(groupPosition);
}
EventBus.getDefault().post(computer());
notifyDataSetChanged();
}
}
}, new Consumer<Throwable>() {
@Override
public void accept(Throwable throwable) throws Exception {
Toast.makeText(context, "删除失败！！",Toast.LENGTH_SHORT).show();
}
});
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Toast.makeText(context, "您取消了删除" + which, Toast.LENGTH_SHORT).show();
}
});
builder.show();
}
});
return view;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
class GroupViewHolder {
CheckBox cb_group;
TextView tv_dian;
}
class ChildViewHolder {
TextView del;
CheckBox cb_child;
SimpleDraweeView sdv;
TextView tv_tit;
TextView tv_info;
TextView tv_price;
AddDeleteView adv_main;
}
/** * 改变全选CheckBox状态 * * @param flag */
private void changeAllCbState(boolean flag) {
MessageEvent messageEvent = new MessageEvent();
messageEvent.setChecked(flag);
EventBus.getDefault().post(messageEvent);
}
/** * 改变二级列表CheckBox状态 * * @param groupPosition * @param flag */
private void changeChildCbState(int groupPosition, boolean flag) {
List<CartBean.DataBean.ListBean> listBeans = childList.get(groupPosition);
for (int i = 0; i < listBeans.size(); i++) {
CartBean.DataBean.ListBean listBean = listBeans.get(i);
listBean.setChecked(flag);
}
}
/** * 改变一级列表CheckBox状态 * * @param groupPosition * @param flag */
private void changeGroupCbState(int groupPosition, boolean flag) {
CartBean.DataBean dataBean = groupList.get(groupPosition);
dataBean.setChecked(flag);
}
/** * 判断一级列表是否全部选中 * * @return */
public boolean isAllGroupCbSelected() {
for (int i = 0; i < groupList.size(); i++) {
CartBean.DataBean dataBean = groupList.get(i);
if (!dataBean.isChecked()) {
return false;
}
}
return true;
}
/** * 判断二级列表是否全部选中 * * @param groupPosition * @return */
public boolean isAllChildCbSelected(int groupPosition) {
List<CartBean.DataBean.ListBean> listBeans = childList.get(groupPosition);
for (int i = 0; i < listBeans.size(); i++) {
CartBean.DataBean.ListBean listBean = listBeans.get(i);
if (!listBean.isChecked()) {
return false;
}
}
return true;
}
/** * 设置全选、反选 * * @param flag */
public void changeAllListCbState(boolean flag) {
for (int i = 0; i < groupList.size(); i++) {
//改变一级列表CheckBox状态
changeGroupCbState(i, flag);
//改变二级列表CheckBox状态
changeChildCbState(i, flag);
}
//将数量和价格传值
EventBus.getDefault().post(computer());
//刷新列表
notifyDataSetChanged();
}
/** * 计算列表中选中的钱和数量 * * @return */
private PriceAndCountEvent computer() {
int count = 0;
int price = 0;
for (int i = 0; i < childList.size(); i++) {
List<CartBean.DataBean.ListBean> listBeans = childList.get(i);
for (int j = 0; j < listBeans.size(); j++) {
CartBean.DataBean.ListBean listBean = listBeans.get(j);
if (listBean.isChecked()) {
count += listBean.getNum();
price += listBean.getNum() * listBean.getPrice();
}
}
}
PriceAndCountEvent priceAndCountEvent = new PriceAndCountEvent();
priceAndCountEvent.setCount(count);
priceAndCountEvent.setPrice(price);
return priceAndCountEvent;
}
}
CartActivity
public class CartActivity extends AppCompatActivity implements ICartView {
private ExpandableListView mElv;
private CheckBox mCbAll;
/** * 全选 */
private TextView mTvQuxuan;
/** * 合计 ：￥550.90 */
private TextView mTvPrice;
/** * 总额:582.70 立减：￥31.80 */
private TextView mTvCartsPrice;
/** * 去结算(0) */
private TextView mTvNum;
private List<List<CartBean.DataBean.ListBean>> lists;
private MyElvAdapter myElvAdapter;
private CartPresenter cartPresenter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cart);
initView();
EventBus.getDefault().register(this);
cartPresenter = new CartPresenter(this);
cartPresenter.getCarts();
}
@Override
public void onDestroy() {
super.onDestroy();
EventBus.getDefault().unregister(this);
if (cartPresenter != null) {
cartPresenter.detachView();
cartPresenter = null;
}
}
private void initView() {
mElv = (ExpandableListView) findViewById(R.id.elv);
mCbAll = (CheckBox) findViewById(R.id.cb_All);
mTvQuxuan = (TextView) findViewById(R.id.tv_quxuan);
mTvPrice = (TextView) findViewById(R.id.tv_price);
mTvCartsPrice = (TextView) findViewById(R.id.tv_carts_price);
mTvNum = (TextView) findViewById(R.id.tv_num);
//全选
mCbAll.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
myElvAdapter.changeAllListCbState(mCbAll.isChecked());
}
});
}
@Override
public void getCarts(CartBean cartBean) {
float price = 0;
int num = 0;
List<CartBean.DataBean> dataBeans = cartBean.getData();
lists = new ArrayList<>();
for (int i = 0; i < dataBeans.size(); i++) {
List<CartBean.DataBean.ListBean> list = dataBeans.get(i).getList();
lists.add(list);
}
//设置适配器
myElvAdapter = new MyElvAdapter(this, dataBeans, lists);
mElv.setAdapter(myElvAdapter);
for (int i = 0; i < dataBeans.size(); i++) {
//默认二级列表展开
mElv.expandGroup(i);
}
//取消小箭头
mElv.setGroupIndicator(null);
//默认全选
for (int i = 0; i < lists.size(); i++) {
for (int j = 0; j < lists.get(i).size(); j++) {
CartBean.DataBean.ListBean listBean = lists.get(i).get(j);
price += listBean.getNum() * listBean.getPrice();
num += listBean.getNum();
}
}
mTvNum.setText(num);
mTvPrice.setText(price + "");
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void onMessageEvent(MessageEvent event) {
mCbAll.setChecked(event.isChecked());
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void onMessageEvent(PriceAndCountEvent event) {
mTvPrice.setText("合计：￥" + event.getPrice() * event.getCount());
mTvCartsPrice.setText("总额：￥" + event.getPrice() * event.getCount());
mTvNum.setText("去结算(" + event.getCount() + ")");
}
}MyApp
public class MyApp extends Application {
@Override
public void onCreate() {
super.onCreate();
//配置磁盘缓存
DiskCacheConfig diskSmallCacheConfig = DiskCacheConfig.newBuilder(this)
.setBaseDirectoryPath(this.getCacheDir())//缓存图片基路径
.setBaseDirectoryName(getString(R.string.app_name))//文件夹名
.build();
ImagePipelineConfig imagePipelineConfig = ImagePipelineConfig.newBuilder(this)
.setBitmapsConfig(Bitmap.Config.RGB_565)
.setSmallImageDiskCacheConfig(diskSmallCacheConfig)
.build();
/** * 初始化Fresco */
Fresco.initialize(this, imagePipelineConfig);
}
}CartBean
public class CartBean {
private String msg;
private String code;
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 = true;
private String sellerName;
private String sellerid;
private List<ListBean> list;
public boolean isChecked() {
return checked;
}
public void setChecked(boolean checked) {
this.checked = checked;
}
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 = true;
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 boolean isChecked() {
return checked;
}
public void setChecked(boolean checked) {
this.checked = checked;
}
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;
}
}
}
}