使用RXjava+Retrofit+MVP实现仿京东购物车

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添加依赖compile 'com.squareup.okhttp3:okhttp:3.4.1'compile 'com.jakewharton:butterknife:8.8.1'annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'compile 'com.facebook.fresco:fresco:0.12.0'compile 'org.greenrobot:eventbus:3.1.1'compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'compile 'io.reactivex.rxjava2:rxjava:2.1.7'compile 'io.reactivex.rxjava2:rxandroid:2.0.1'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'compile 'com.github.bumptech.glide:glide:3.7.0'//添加权限
<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"/>

注册清单文件
android:name=".api.MyApplication"



public interface IView {    void onSuccess(Object o);    void onFailed(Exception e);    void delSuccess(MessageBean listMessageBean);}


public interface IModel {    void getData(String uid,String pid);}


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);    }}


public interface IPresenter {    void getData(String uid,String pid);}


public class NewsPresenter implements IPresenter{    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();        }//        if (!subscriber2.isDisposed()){//            subscriber2.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() {                    }                });    }}




public class RetrofitUtils {    private static volatile RetrofitUtils instance;    private ApiService apiService;    private OkHttpClient client = new OkHttpClient            .Builder()            .addInterceptor(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;    }}


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);}


public class LoggingInterceptor implements Interceptor {    @Override    public Response intercept(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);    }}



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


public class DatasBean {
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 {
 private double bargainPrice;        private String createtime;        private String detailUrl;        private String images;        private int num;        private int pid;        private int price;        private int pscid;        private int selected;        private int sellerid;        private String subhead;        private String title;        private boolean checked;        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 int getPrice() {            return price;        }        public void setPrice(int 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;        }    }}


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;    }}



public class MessageEvent {    private boolean checked;    public boolean isChecked() {        return checked;    }    public void setChecked(boolean checked) {        this.checked = checked;    }}


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;    }}

public class SomeId {    private String pid;    public String getPid() {        return pid;    }    public void setPid(String pid) {        this.pid = pid;    }}


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);    }}


public class DelPresenter implements IPresenter {    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() {                    }                });    }}


自定义View实现加减
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;    }}



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.tv_content = view.findViewById(R.id.tv_content);//            holder.tv_time = view.findViewById(R.id.tv_time);//            holder.imgIcon = view.findViewById(R.id.img_icon);             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.iv_add = view.findViewById(R.id.iv_add);//            holder.iv_del = view.findViewById(R.id.iv_del);//            holder.tv_num = view.findViewById(R.id.tv_num);            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.getType_name());        holder.tv_tel.setText(datasBean.getTitle());//        holder.tv_content.setText(datasBean.getMsg());//        holder.tv_time.setText(datasBean.getAdd_time());        holder.tv_price.setText("¥"+datasBean.getPrice() );        holder.adv.setNumber(datasBean.getNum());//        holder.tv_num.setText(datasBean.getNum() + "");        String images = datasBean.getImages().trim();        String[] split = images.split("[|]");        holder.draweeView.setImageURI(split[0]);//        Glide.with(context).load(split[0]).into(holder.draweeView);        //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());                }            }        });//        //加号//        holder.iv_add.setOnClickListener(new View.OnClickListener() {//            @Override//            public void onClick(View v) {//                int num = datasBean.getNum();//                holder.tv_num.setText(++num + "");//                datasBean.setNum(num);//                if (holder.cbChild.isChecked()) {//                    EventBus.getDefault().post(compute());//                }//            }//        });//        //减号//        holder.iv_del.setOnClickListener(new View.OnClickListener() {//            @Override//            public void onClick(View v) {//                int num = datasBean.getNum();//                if (num == 1) {//                    Toast.makeText(context,"最小数量为1",Toast.LENGTH_SHORT).show();//                    return;//                }//                holder.tv_num.setText(--num + "");//                datasBean.setNum(num);//                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) {                        dialog.dismiss();                    }                });                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();    }}



public class MainActivity extends AppCompatActivity implements IView{    private String uid = "3027";    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    protected void onDestroy() {        super.onDestroy();        EventBus.getDefault().unregister(this);        if (presenter != null) {            presenter.detachView();        }    }    @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) {    }    @Override    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);    }}


在values文件夹下创建attrs
<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>



activity_main
<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.gouwuche.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
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:gravity="center"    xmlns:fresco="http://schemas.android.com/apk/res-auto"    xmlns:app="http://schemas.android.com/apk/res-auto"    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" />        <!--<ImageView-->            <!--android:id="@+id/img_icon"-->            <!--android:layout_width="80dp"-->            <!--android:layout_height="80dp"-->            <!--android:src="@mipmap/ic_launcher" />-->        <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">                    <!--<ImageView-->                        <!--android:id="@+id/iv_del"-->                        <!--android:layout_width="25dp"-->                        <!--android:layout_height="25dp"-->                        <!--android:src="@mipmap/remove" />-->                    <!--<TextView-->                        <!--android:id="@+id/tv_num"-->                        <!--android:layout_width="wrap_content"-->                        <!--android:layout_height="wrap_content"-->                        <!--android:layout_marginLeft="5dp"-->                        <!--android:paddingBottom="2dp"-->                        <!--android:paddingLeft="20dp"-->                        <!--android:paddingRight="20dp"-->                        <!--android:paddingTop="2dp"-->                        <!--android:text="1"-->                        <!--android:textSize="20sp" />-->                    <!--<ImageView-->                        <!--android:id="@+id/iv_add"-->                        <!--android:layout_width="25dp"-->                        <!--android:layout_height="25dp"-->                        <!--android:layout_marginLeft="5dp"-->                        <!--android:src="@mipmap/add" />-->                    <com.example.gouwuche.view.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="+"></com.example.gouwuche.view.AddDeleteView>                </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
<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" />        <!--<Button-->            <!--android:id="@+id/tv_store_edtor"-->            <!--android:layout_width="wrap_content"-->            <!--android:layout_height="wrap_content"-->            <!--android:layout_alignParentRight="true"-->            <!--android:layout_centerVertical="true"-->            <!--android:layout_marginRight="4dp"-->            <!--android:background="@null"-->            <!--android:text="编辑"-->            <!--android:textSize="18sp"-->            <!--/>-->    </RelativeLayout></LinearLayout>



layout_add_delete
<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>



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