Retrofit+MVP+fresco 等 实现购物车

//导入依赖

annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
compile 'com.jakewharton:butterknife:8.8.1'
compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'
compile 'com.squareup.retrofit2:retrofit:2.3.0'
compile 'com.squareup.retrofit2:converter-gson:2.3.0'
compile 'com.facebook.fresco:fresco:0.12.0'
compile 'com.facebook.fresco:animated-base-support:0.12.0'
compile 'com.facebook.fresco:animated-webp:0.12.0'
compile 'com.facebook.fresco:webpsupport:0.12.0'
compile 'io.reactivex.rxjava2:rxjava:2.1.7'
compile 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'
compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
compile 'com.squareup.okhttp3:okhttp:3.9.0'
compile 'com.google.code.gson:gson:2.8.1'
compile 'org.greenrobot:eventbus:3.1.1'

//权限

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

// MyAdapter 适配器

public class MyAdapter extends BaseExpandableListAdapter {

private Context context;
private List<DatasBean> groupList;
private List<List<DatasBean.ListBean>> childList;
public MyAdapter(Context context, List<DatasBean> groupList, List<List<DatasBean.ListBean>> childList) {
this.context =context;
this.groupList = groupList;
this.childList = childList;
}

@Override
public int getGroupCount() {
return groupList.size();
}

@Override
public int getChildrenCount(int i) {
return childList.get(i).size();
}

@Override
public Object getGroup(int i) {
return groupList.get(i);
}

@Override
public Object getChild(int i, int i1) {
return childList.get(i).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 false;
}

@Override
public View getGroupView(final int i, boolean b, View view, ViewGroup viewGroup) {
final GroupViewHolder holder;
if (view == null) {
holder = new GroupViewHolder();
view = view.inflate(context, R.layout.group_layout, null);
holder.cbGroup = view.findViewById(R.id.cb_parent);
holder.tv_number = view.findViewById(R.id.tv_number);
view.setTag(holder);
} else {
holder = (GroupViewHolder) view.getTag();
}
final DatasBean dataBean = groupList.get(i);
holder.cbGroup.setChecked(dataBean.isChecked());
//        holder.tv_number.setText(dataBean.getTitle());
holder.tv_number.setText(dataBean.getSellerName());
//一级checkbox
holder.cbGroup.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dataBean.setChecked(holder.cbGroup.isChecked());
changeChildCbState(i, holder.cbGroup.isChecked());
EventBus.getDefault().post(compute());
changeAllCbState(isAllGroupCbSelected());
notifyDataSetChanged();
}
});

return view;
}

@Override
public View getChildView(final int i, final int i1, boolean b, View view, ViewGroup viewGroup) {
final ChildViewHolder holder;
if (view == null) {
holder = new ChildViewHolder();
view = view.inflate(context,R.layout.child_layout, null);
holder.cbChild = view.findViewById(R.id.cb_child);
holder.tv_tel = view.findViewById(R.id.tv_tel);
holder.draweeView = (SimpleDraweeView) view.findViewById(R.id.my_image_view);

holder.tv_price = view.findViewById(R.id.tv_pri);
holder.tv_del = view.findViewById(R.id.tv_del);
holder.adv = view.findViewById(R.id.adv_main);
view.setTag(holder);
} else {
holder = (ChildViewHolder) view.getTag();
}
final DatasBean.ListBean datasBean = childList.get(i).get(i1);

holder.cbChild.setChecked(datasBean.isChecked());
holder.tv_tel.setText(datasBean.getTitle());
holder.tv_price.setText("￥"+datasBean.getPrice() );
holder.adv.setNumber(datasBean.getNum());
String images = datasBean.getImages().trim();
String[] split = images.split("[|]");
holder.draweeView.setImageURI(split[0]);

//二级checkbox
holder.cbChild.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//设置该条目对象里的checked属性值
datasBean.setChecked(holder.cbChild.isChecked());
PriceAndCountEvent priceAndCountEvent = compute();
EventBus.getDefault().post(priceAndCountEvent);

if (holder.cbChild.isChecked()) {
//当前checkbox是选中状态
if (isAllChildCbSelected(i)) {
changGroupCbState(i, true);
changeAllCbState(isAllGroupCbSelected());
}
} else {
changGroupCbState(i, false);
changeAllCbState(isAllGroupCbSelected());
}
notifyDataSetChanged();
}

});
holder.adv.setOnAddDelClickListener(new AddDeleteView.OnAddDelClickListener() {
@Override
public void onAddClick(View v) {
Log.i("TAG", "onAddClick: 执行");
int origin = holder.adv.getNumber();
origin++;
//                holder.adv.setNumber(origin);
int num = datasBean.getNum();
num++;
holder.adv.setNumber(num);
datasBean.setNum(num);
if (holder.cbChild.isChecked()) {
EventBus.getDefault().post(compute());
}
}

@Override
public void onDelClick(View v) {
int origin = holder.adv.getNumber();
//                int num = datasBean.getNum();

origin--;
if (origin == 0) {
Toast.makeText(context,"最小数量为1",Toast.LENGTH_SHORT).show();
return ;
}
holder.adv.setNumber(origin);
datasBean.setNum(origin);
if (holder.cbChild.isChecked()) {

EventBus.getDefault().post(compute());
}

}
});

//删除
holder.tv_del.setOnClickListener(new View.OnClickListener() {

private AlertDialog dialog;

@Override
public void onClick(View v) {
final List<DatasBean.ListBean> datasBeen = childList.get(i);

AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("提示");
builder.setMessage("确认是否删除？");
builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int ii) {
DatasBean.ListBean remove = datasBeen.remove(i1);
if (datasBeen.size() == 0) {
childList.remove(i);
groupList.remove(i);
int pid = datasBean.getPid();
SomeId someId = new SomeId();
someId.setPid(pid+"");
EventBus.getDefault().post(someId);
}
EventBus.getDefault().post(compute());
notifyDataSetChanged();
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();

4000
}
});
dialog = builder.create();
dialog.show();

}
});
return view;
}

@Override
public boolean isChildSelectable(int i, int i1) {
return false;
}
class GroupViewHolder {
CheckBox cbGroup;
TextView tv_number;
}

class ChildViewHolder {
CheckBox cbChild;
TextView tv_tel;
TextView tv_content;
TextView tv_time;
//        ImageView imgIcon;
SimpleDraweeView draweeView;
TextView tv_price;
TextView tv_del;
ImageView iv_del;
ImageView iv_add;
TextView tv_num;
AddDeleteView adv;
}
/**
* 改变全选的状态
*
* @param flag
*/
private void changeAllCbState(boolean flag) {
MessageEvent messageEvent = new MessageEvent();
messageEvent.setChecked(flag);
EventBus.getDefault().post(messageEvent);
}
/**
* 改变一级列表checkbox状态
*
* @param groupPosition
*/
private void changGroupCbState(int groupPosition, boolean flag) {
//        GoosBean.DataBean dataBean = groupList.get(groupPosition);
DatasBean dataBean = groupList.get(groupPosition);

dataBean.setChecked(flag);
}

/**
* 改变二级列表checkbox状态
*
* @param groupPosition
* @param flag
*/
private void changeChildCbState(int groupPosition, boolean flag) {
List<DatasBean.ListBean> datasBeen = childList.get(groupPosition);

for (int i = 0; i < datasBeen.size(); i++) {
DatasBean.ListBean datasBean = datasBeen.get(i);
datasBean.setChecked(flag);
}
}
/**
* 判断一级列表是否全部选中
*
* @return
*/
private boolean isAllGroupCbSelected() {
for (int i = 0; i < groupList.size(); i++) {
DatasBean 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
*/
private boolean isAllChildCbSelected(int groupPosition) {
List<DatasBean.ListBean> datasBeen = childList.get(groupPosition);

for (int i = 0; i < datasBeen.size(); i++) {
DatasBean.ListBean datasBean = datasBeen.get(i);

if (!datasBean.isChecked()) {
return false;
}
}
return true;
}
/**
* 计算列表中，选中的钱和数量
*/
private PriceAndCountEvent compute() {
int count = 0;
int price = 0;
for (int i = 0; i < childList.size(); i++) {
List<DatasBean.ListBean> datasBeen = childList.get(i);

for (int j = 0; j < datasBeen.size(); j++) {
DatasBean.ListBean datasBean = datasBeen.get(j);

if (datasBean.isChecked()) {
price += datasBean.getNum() * datasBean.getPrice();
count += datasBean.getNum();
}
}
}
PriceAndCountEvent priceAndCountEvent = new PriceAndCountEvent();
priceAndCountEvent.setCount(count);
priceAndCountEvent.setPrice(price);
return priceAndCountEvent;
}
/**
* 设置全选、反选
*
* @param flag
*/
public void changeAllListCbState(boolean flag) {
for (int i = 0; i < groupList.size(); i++) {
changGroupCbState(i, flag);
changeChildCbState(i, flag);
}
EventBus.getDefault().post(compute());
notifyDataSetChanged();
}
}

// ApiService

public interface ApiService {

// http://120.27.23.105/product/deleteCart?uid=72&pid=1 @GET("product/getCarts")
Flowable<MessageBean<List<DatasBean>>> getDatas(@Query("uid") String uid);
@GET("product/deleteCart")
Flowable<MessageBean> deleteData(@Query("uid") String uid, @Query("pid") String pid);
}

//自定义控件  AddDeleteView

public class AddDeleteView extends LinearLayout {

private OnAddDelClickListener listener;
private TextView et_number;

public void setOnAddDelClickListener(OnAddDelClickListener listener) {
if (listener != null) {
this.listener = listener;
}
}

public interface OnAddDelClickListener{
void onAddClick(View v);
void onDelClick(View v);
}

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.layout_add_delete,this);
Button but_add = findViewById(R.id.but_add);
Button but_delete = findViewById(R.id.but_delete);
et_number = findViewById(R.id.et_number);

TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.AddDeleteViewStyle);
String left_text = typedArray.getString(R.styleable.AddDeleteViewStyle_left_text);
String middle_text = typedArray.getString(R.styleable.AddDeleteViewStyle_middle_text);
String right_text = typedArray.getString(R.styleable.AddDeleteViewStyle_right_text);
but_delete.setText(left_text);
but_add.setText(right_text);
et_number.setText(middle_text);
//释放资源
typedArray.recycle();

but_add.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
listener.onAddClick(view);
}
});
but_delete.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
listener.onDelClick(view);
}
});
}
/**
* 对外提供设置EditText值的方法
*/
public void setNumber(int number){
if (number>0){
et_number.setText(number+"");
}
}
/**
* 得到控件原来的值
*/
public int getNumber(){
int number = 0;
try {
String numberStr = et_number.getText().toString().trim();
number = Integer.valueOf(numberStr);
} catch (Exception e) {
number = 0;
}
return number;
}
}

// MessageEvent

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;
}
}

//LoggingInterceptor

public class LoggingInterceptor implements Interceptor  {

@Override
public Response intercept(Interceptor.Chain chain) throws IOException {
Request original = chain.request();
HttpUrl url=original.url().newBuilder()
.addQueryParameter("source","android")
.build();
//添加请求头
Request request = original.newBuilder()
.url(url)
.build();
return chain.proceed(request);
}

}

M层//DelModel

public class DelModel implements IModel{

private DelPresenter presenter;

public DelModel(DelPresenter presenter){
this.presenter =  presenter;

}
@Override
public void getData(String uid,String pid) {

Flowable<MessageBean> delFlowable = RetrofitUtils.getInstance().getApiService().deleteData(uid,pid);
presenter.delData(delFlowable);
}
}

// IModel

public interface IModel {

void getData(String uid, String pid);
}

//NewsModel

public class NewsModel implements IModel{
private NewsPresenter presenter;

public NewsModel(NewsPresenter presenter){
this.presenter = (NewsPresenter) presenter;

}
@Override
public void getData(String uid,String pid) {
Flowable<MessageBean<List<DatasBean>>> flowable = RetrofitUtils.getInstance().getApiService().getDatas(uid);
presenter.getNews(flowable);

}
}

// V层// Iview

public interface Iview {

void onSuccess(Object o);
void onFailed(Exception e);

void delSuccess(MessageBean listMessageBean);
}

P层//  BasePresenter

public interface BasePresenter {

void getData(String uid, String pid);
}

//DelPresenter

public class DelPresenter implements BasePresenter{

private Iview iv;
private DisposableSubscriber subscriber2;

public void attachView(Iview iv) {
this.iv = iv;
}

public void detachView() {
if (iv != null) {
iv = null;
}

if (!subscriber2.isDisposed()){
subscriber2.dispose();
}
}

@Override
public void getData(String uid,String pid) {
DelModel model = new DelModel(this);
model.getData(uid,pid);
}

public void delData(Flowable<MessageBean> delFlowable) {
subscriber2 = delFlowable.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribeWith(new DisposableSubscriber<MessageBean>() {
@Override
public void onNext(MessageBean listMessageBean) {
if (listMessageBean != null) {
iv.delSuccess(listMessageBean);

}
}

@Override
public void onError(Throwable t) {
iv.onFailed((Exception) t);
}

@Override
public void onComplete() {

}
});
}
}

//NewsPresenter

public class NewsPresenter implements BasePresenter {
private Iview iv;
private DisposableSubscriber subscriber1;

public void attachView(Iview iv) {
this.iv = iv;
}

public void detachView() {
if (iv != null) {
iv = null;
}
if (!subscriber1.isDisposed()){
subscriber1.dispose();
}

}

@Override
public void getData(String uid,String pid) {
NewsModel model = new NewsModel(this);
model.getData(uid,pid);
}

public void getNews(Flowable<MessageBean<List<DatasBean>>> flowable) {
subscriber1 = flowable.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribeWith(new DisposableSubscriber<MessageBean<List<DatasBean>>>() {
@Override
public void onNext(MessageBean<List<DatasBean>> listMessageBean) {
if (listMessageBean != null) {
List<DatasBean> list = listMessageBean.getData();
if (list != null) {
iv.onSuccess(list);
}
}
}

@Override
public void onError(Throwable t) {
iv.onFailed((Exception) t);
}

@Override
public void onComplete() {

}
});
}

}

//Utils// RetrofitUtils

public class RetrofitUtils {

private static volatile RetrofitUtils instance;
private ApiService apiService;
private OkHttpClient client = new OkHttpClient
.Builder()
.addInterceptor((Interceptor) new LoggingInterceptor())
.build();
private RetrofitUtils(){
Retrofit retrofit = new Retrofit.Builder()
.client(client)
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.baseUrl("http://120.27.23.105/")
.build();
apiService = retrofit.create(ApiService.class);
}
public static RetrofitUtils getInstance(){
if (null==instance){
synchronized (RetrofitUtils.class){
if (instance==null){
instance = new RetrofitUtils();
}
}
}
return instance;
}
public ApiService getApiService(){
return apiService;
}
}

//Bean类DatasBean

public class DatasBean {

/**
* list : [{"bargainPrice":6666,"createtime":"2017-10-10T16:01:31","detailUrl":"https://item.m.jd.com/product/5089273.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t8284/363/1326459580/71585/6d3e8013/59b857f2N6ca75622.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t9346/182/1406837243/282106/68af5b54/59b8480aNe8af7f5c.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8434/54/1359766007/56140/579509d9/59b85801Nfea207db.jpg!q70.jpg","num":1,"pid":46,"price":234,"pscid":39,"selected":0,"sellerid":2,"subhead":"【iPhone新品上市】新一代iPhone，让智能看起来更不一样","title":"Apple iPhone 8 Plus (A1864) 64GB 金色 移动联通电信4G手机"}]
* sellerName : 商家2
* sellerid : 2
*/

private String sellerName;
private String sellerid;
private List<ListBean> list;
private boolean checked;

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 {
/**
* bargainPrice : 6666
* createtime : 2017-10-10T16:01:31
* detailUrl : https://item.m.jd.com/product/5089273.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends * images : https://m.360buyimg.com/n0/jfs/t8284/363/1326459580/71585/6d3e8013/59b857f2N6ca75622.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t9346/182/1406837243/282106/68af5b54/59b8480aNe8af7f5c.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8434/54/1359766007/56140/579509d9/59b85801Nfea207db.jpg!q70.jpg * num : 1
* pid : 46
* price : 234

e1a0
* pscid : 39
* selected : 0
* sellerid : 2
* subhead : 【iPhone新品上市】新一代iPhone，让智能看起来更不一样
* title : Apple iPhone 8 Plus (A1864) 64GB 金色 移动联通电信4G手机
*/
private boolean checked;
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;
}
}
}

//MessageBean

public class MessageBean<T> {

/**
* msg : 请求成功
* code : 0
* data : []
*/

private String msg;
private String code;
private T 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 T getData() {
return data;
}

public void setData(T data) {
this.data = data;
}
}

//SomeId

public class SomeId {

private String pid;

public String getPid() {
return pid;
}

public void setPid(String pid) {
this.pid = pid;
}
}

//MainActivity

public class MainActivity extends AppCompatActivity implements Iview {

private String uid = "1000";
private NewsPresenter presenter;
private CheckBox mCheckbox2;
private ExpandableListView mElv;

/**
* 0
*/
private TextView mTvPrice;
/**
* 结算(0)
*/
private TextView mTvNum;
private MyAdapter adapter;
private List<DatasBean> groupList = new ArrayList<>();
private List<List<DatasBean.ListBean>> childList = new ArrayList<>();
private String pid;
private DelPresenter delPresenter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

EventBus.getDefault().register(this);

presenter = new NewsPresenter();
presenter.attachView(this);
delPresenter = new DelPresenter();
delPresenter.attachView(this);
initView();
adapter = new MyAdapter(this, groupList, childList);
mElv.setAdapter(adapter);

mCheckbox2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
adapter.changeAllListCbState(mCheckbox2.isChecked());
}
});

}
private void initView() {
mElv = (ExpandableListView) findViewById(R.id.elv);
mCheckbox2 = (CheckBox) findViewById(R.id.checkbox2);
mTvPrice = (TextView) findViewById(R.id.tv_price);
mTvNum = (TextView) findViewById(R.id.tv_num);
}

@Override
public void onSuccess(Object o) {
if(o!=null){
List<DatasBean> list = (List<DatasBean> )o;
if(list!=null){
groupList.addAll(list);
for (int i = 0; i < list.size(); i++) {
List<DatasBean.ListBean> datas = list.get(i).getList();
childList.add(datas);
}

adapter.notifyDataSetChanged();
mCheckbox2.setChecked(true);

adapter.changeAllListCbState(true);
mElv.setGroupIndicator(null);
for (int i=0;i<groupList.size();i++){
mElv.expandGroup(i);
}

}
}
}

@Override
public void onFailed(Exception e) {

}

public void delSuccess(MessageBean listMessageBean) {
Toast.makeText(this,listMessageBean.getMsg(),Toast.LENGTH_SHORT).show();
}

@Override
protected void onResume() {
super.onResume();
presenter.getData(uid,pid);

}

@Subscribe
public void onMessageEvent(MessageEvent event) {
mCheckbox2.setChecked(event.isChecked());
}

@Subscribe
public void onMessageEvent(PriceAndCountEvent event) {
mTvNum.setText("结算(" + event.getCount() + ")");
mTvPrice.setText("￥"+event.getPrice() );
}
@Subscribe
public void onMessageEvent(SomeId event) {
pid = event.getPid();
Log.e("zxz","我得到了pid:"+pid);
delPresenter.getData(uid,pid);

}
@Override
protected void onDestroy() {
super.onDestroy();
EventBus.getDefault().unregister(this);
if (presenter != null) {
presenter.detachView();
}
}

}

//此类需要在配置文件中进行初始化

public class MyApp extends Application{
@Override
public void onCreate() {
super.onCreate();
Fresco.initialize(this);

}
}

//布局activity_main

<?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="bwie.com.cart.MainActivity">
<TextView
android:layout_width="match_parent"
android:layout_height="50dp"
android:gravity="center"
android:text="购物车"
android:textColor="#ff3660"
android:textSize="25sp" />

<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="50dp"
android:layout_alignParentBottom="true"
android:background="@android:color/white"
android:gravity="center_vertical">

<CheckBox
android:id="@+id/checkbox2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:focusable="false" />

<TextView
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_toRightOf="@+id/checkbox2"
android:gravity="center_vertical"
android:text="全选"
android:textSize="20sp" />

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:orientation="horizontal">

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="合计 ：" />

<TextView
android:id="@+id/tv_price"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_marginLeft="10dp"
android:paddingRight="10dp"
android:text="0"
android:textColor="@android:color/holo_red_light" />

<TextView
android:id="@+id/tv_num"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:background="@android:color/holo_red_dark"
android:gravity="center"
android:padding="10dp"
android:text="结算(0)"
android:textColor="@android:color/white" />
</LinearLayout>
</RelativeLayout>
</LinearLayout>

child_layout

<?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:fresco="http://schemas.android.com/tools"
android:orientation="vertical"
android:gravity="center"
android:layout_width="match_parent"
android:layout_height="match_parent">

<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="horizontal">

<CheckBox
android:layout_marginLeft="20dp"
android:id="@+id/cb_child"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:focusable="false" />

<com.facebook.drawee.view.SimpleDraweeView
android:id="@+id/my_image_view"
android:layout_width="80dp"
android:layout_height="80dp"
fresco:placeholderImage="@mipmap/ic_launcher"
/>

<RelativeLayout
android:layout_marginLeft="10dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="wrap_content"
android:orientation="vertical"
android:layout_height="wrap_content">

<TextView
android:id="@+id/tv_tel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:singleLine="true"
android:text="iphone6"

/>

<TextView
android:id="@+id/tv_pri"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="¥3000.00"

/>

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:gravity="center_vertical">

<custom.AddDeleteView
android:id="@+id/adv_main"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:left_text="-"
app:middle_text="3"
app:right_text="+"/>
</LinearLayout>

</LinearLayout>
<TextView
android:id="@+id/tv_del"
android:layout_width="40dp"
android:layout_height="40dp"
android:text="删除"
android:layout_alignParentRight="true"
android:layout_marginRight="10dp"
android:layout_marginTop="25dp"
android:layout_centerVertical="true"
android:gravity="center" />
</RelativeLayout>
</LinearLayout>

</LinearLayout>

group_layout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:gravity="center"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@android:color/white" >

<CheckBox
android:id="@+id/cb_parent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_marginRight="4dp"
android:checkMark="?android:attr/listChoiceIndicatorMultiple"
android:gravity="center"
android:minHeight="38dp"
android:minWidth="32dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:visibility="visible" />

<TextView
android:id="@+id/tv_number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginBottom="10dp"
android:layout_marginTop="10dp"
android:layout_toRightOf="@id/cb_parent"
android:background="@android:color/white"
android:drawablePadding="10dp"
android:text="第八号当铺"
android:textColor="#666666"
android:textSize="18sp" />
</RelativeLayout>
</LinearLayout>

layout_add_delete

<?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:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
>
<Button
android:id="@+id/but_delete"
android:layout_width="40dp"
android:layout_height="40dp"
android:text="-"
/>
<TextView
android:id="@+id/et_number"
android:layout_width="40dp"
android:inputType="number"
android:layout_height="wrap_content"
android:gravity="center"

/>
<Button
android:id="@+id/but_add"
android:layout_width="40dp"
android:layout_height="40dp"
android:text="+"
/>
</LinearLayout>
</LinearLayout>

//Values下attrs

<?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>