二级购物车新的布局

于 2017-12-20 21:00:06 发布
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本文链接：https://blog.csdn.net/thw_m/article/details/78857569
版权

全选按钮

导入依赖

  compile 'com.squareup.okhttp3:okhttp:3.9.0'
    compile 'com.google.code.gson:gson:2.8.2'
    compile 'com.android.support:recyclerview-v7:25.3.1'
    compile 'com.jakewharton:butterknife:8.8.1'
    annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
    compile 'com.facebook.fresco:fresco:0.14.1'
    compile 'com.squareup.retrofit2:retrofit:2.0.0-beta4'
    compile'com.squareup.retrofit2:converter-gson:2.0.0-beta4'
    compile 'com.squareup.retrofit2:converter-scalars:2.0.0'
    compile 'com.squareup.retrofit2:adapter-rxjava2:2.2.0'
    compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
    compile 'io.reactivex.rxjava2:rxjava:2.1.7'
加入权限 

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

activity_main.xml上面是标题 中间是recyclerview 下面是全选


<?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.menglucywhh.zhoukao3_171219.MainActivity">

    <RelativeLayout
        android:padding="20dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:textSize="23sp"
            android:layout_centerVertical="true"
            android:text="＜"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:textStyle="bold"
            android:textSize="23sp"
            android:layout_centerHorizontal="true"
            android:text="购物车"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <TextView
            android:id="@+id/bianji"
            android:textSize="20sp"
            android:layout_centerVertical="true"
            android:layout_alignParentRight="true"
            android:text="编辑"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </RelativeLayout>

    <TextView
        android:layout_marginTop="5dp"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#D4D4D4"/>
    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_View"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        />

    <RelativeLayout
        android:gravity="center_vertical"
        android:orientation="horizontal"
        android:layout_alignParentBottom="true"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <CheckBox
            android:layout_marginLeft="10dp"
            android:layout_centerVertical="true"
            android:background="@drawable/shopcart_unselected"
            android:button="@null"
            android:id="@+id/quanxuan"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView

            android:layout_centerVertical="true"
            android:textStyle="bold"
            android:layout_marginLeft="40dp"
            android:textSize="23sp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="全选"
            />

        <LinearLayout
            android:orientation="vertical"
            android:layout_centerInParent="true"
            android:layout_marginRight="70dp"
            android:layout_centerVertical="true"
            android:layout_marginLeft="10dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">

            <TextView

                android:textColor="#e53e42"
                android:id="@+id/total_price"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="20sp"
                android:text="总价 : ¥0元"
                />

            <TextView
                android:layout_alignBottom="@+id/total_price"
                android:id="@+id/total_num"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="20sp"
                android:text="共0件商品"
                />

        </LinearLayout>

        <TextView
            android:id="@+id/quzhifu"
            android:layout_centerVertical="true"
            android:layout_alignParentRight="true"
            android:padding="30dp"
            android:gravity="center"
            android:textSize="22sp"
            android:text="去支付"
            android:textColor="#fff"
            android:background="#FC7903"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <LinearLayout
            android:id="@+id/linear_shanchu"
            android:visibility="gone"
            android:layout_alignParentRight="true"
            android:layout_marginLeft="30dp"
            android:orientation="horizontal"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">
        <TextView
            android:paddingRight="30dp"
            android:paddingLeft="30dp"
            android:padding="20dp"
            android:gravity="center"
            android:textSize="20sp"
            android:text="分享宝贝"
            android:textColor="#fff"
            android:background="#FC7903"
            android:layout_width="wrap_content"
            android:layout_height="match_parent" />
        <TextView
            android:paddingRight="30dp"
            android:paddingLeft="30dp"
            android:padding="20dp"
            android:gravity="center"
            android:textSize="20sp"
            android:text="移到收藏夹"
            android:textColor="#fff"
            android:background="#FC7903"
            android:layout_width="wrap_content"
            android:layout_height="match_parent" />
        <TextView
            android:id="@+id/shanchu"
            android:paddingRight="30dp"
            android:paddingLeft="30dp"
            android:padding="30dp"
            android:gravity="center"
            android:textSize="20sp"
            android:text="删除"
            android:textColor="#fff"
            android:background="#DC143C"
            android:layout_width="wrap_content"
            android:layout_height="match_parent" />
        </LinearLayout>
    </RelativeLayout>

</LinearLayout>
自定义的加减号的布局custom_jiajian.xml

custom_jiajian.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:orientation="horizontal"
    android:gravity="center_vertical"
    android:layout_height="match_parent">

    <Button
        android:background="#F2F1F1"
        android:textSize="20sp"
        android:id="@+id/reverse"
        android:text="一"
        android:layout_width="40dp"
        android:layout_height="40dp" />

    <EditText
        android:gravity="center"
        android:background="#FAFAFA"
        android:textStyle="bold"
        android:textSize="23sp"
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:text="1"
        android:id="@+id/count"
        />

    <Button
        android:id="@+id/add"
        android:background="#F2F1F1"
        android:textSize="25sp"
        android:text="+"
        android:layout_width="40dp"
        android:layout_height="40dp" />
</LinearLayout>
CustomJiajian.java引入custom_jiajian.xml的布局 

public class CustomJiaJian extends LinearLayout{
    private Button reverse;
    private Button add;
    private EditText countEdit;
    private int mCount =1;
    public CustomJiaJian(Context context) {
        super(context);
    }

    public CustomJiaJian(final Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
        View view = View.inflate(context, R.layout.custom_jiajian,this);

        reverse = (Button) view.findViewById(R.id.reverse);
        add = (Button) view.findViewById(R.id.add);
        countEdit = (EditText) view.findViewById(R.id.count);

        reverse.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                String content = countEdit.getText().toString().trim();
                int count = Integer.valueOf(content);

                if(count>1){
                    mCount = count-1;
                    countEdit.setText(mCount+"");
                    //回调给adapter里面
                    if(customListener!=null){
                        customListener.jiajian(mCount);
                    }
                }else{
                    Toast.makeText(context, "最小数量为1", Toast.LENGTH_SHORT).show();
                }
            }
        });

        add.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                String content = countEdit.getText().toString().trim();
                int count = Integer.valueOf(content)+1;
                mCount = count;

                countEdit.setText(mCount+"");

                //接口回调给adapter
                if(customListener!=null){
                    customListener.jiajian(mCount);
                }
            }
        });
    }

    public CustomJiaJian(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    CustomListener customListener;
    public void setCustomListener(CustomListener customListener){
        this.customListener = customListener;
    }

    //加减的接口
    public interface CustomListener{
        public void jiajian(int count);
        public void shuRuZhi(int count);
    }

    public void setEditText(int num) {
        if(countEdit!=null){
            countEdit.setText(num+"");
        }
    }
}

适配器的布局

recy_cart_item.xml中的引入自定义加减号的布局,需要先创建CustomJiaJian的类,改成自己的包名

 <com.example.menglucywhh.zhoukao3_171219.customview.CustomJiaJian
                android:visibility="gone"
                android:id="@+id/custom_jiajian"
                android:layout_width="wrap_content"
                android:layout_height="0dp"
                android:layout_weight="1"
                />
recy_cart_item.xml 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:fresco="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:orientation="vertical"
    android:layout_height="match_parent">

  <RelativeLayout
        android:padding="5dp"
        android:background="#FFFFFF"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <CheckBox
            android:layout_centerVertical="true"
            android:id="@+id/shop_checkbox"
            android:layout_width="50dp"
            android:layout_height="50dp" />

        <TextView
            android:layout_centerVertical="true"
            android:layout_marginLeft="35dp"
            android:text="良品铺子"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="23sp"
            android:textStyle="bold"
            android:id="@+id/shop_name"
            />
        <TextView
            android:id="@+id/item_bianji"
            android:layout_centerVertical="true"
            android:layout_alignParentRight="true"
            android:textSize="20sp"
            android:text="编辑"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </RelativeLayout>
    <TextView
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#D4D4D4"/>
    <LinearLayout
        android:background="#F2F2F2"
        android:gravity="center_vertical"
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <CheckBox
            android:id="@+id/item_checkbox"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <com.facebook.drawee.view.SimpleDraweeView
            fresco:failureImage="@mipmap/ic_launcher"
            fresco:placeholderImage="@mipmap/ic_launcher"
            android:id="@+id/item_face"
            android:src="@mipmap/ic_launcher"
            android:layout_width="140dp"
            android:layout_height="140dp" />

        <LinearLayout
            android:layout_marginLeft="10dp"
            android:orientation="vertical"
            android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content">

            <TextView
                android:id="@+id/item_name"
                android:textSize="20sp"
                android:text="三只松鼠"
                android:layout_width="wrap_content"
                android:layout_weight="1"
                android:layout_height="0dp"
                />

            <TextView
                android:textColor="#f00"
                android:id="@+id/item_price"
                android:textSize="23sp"
                android:text="299"
                android:layout_width="wrap_content"
                android:layout_height="0dp"
                android:layout_weight="1"
                />


            <com.example.menglucywhh.zhoukao3_171219.customview.CustomJiaJian
                android:visibility="gone"
                android:id="@+id/custom_jiajian"
                android:layout_width="wrap_content"
                android:layout_height="0dp"
                android:layout_weight="1"
                />

            <TextView
                android:textSize="20sp"
                android:visibility="gone"
                android:id="@+id/item_yansechima"
                android:text="颜色 : 黑色 ; 尺码: 29"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
        </LinearLayout>

       <!-- <ImageView
            android:visibility="gone"
            android:id="@+id/item_delete"
            android:layout_marginRight="10dp"
            android:src="@drawable/shopcart_delete"
            android:layout_width="30dp"
            android:layout_height="30dp" />-->

        <TextView
            android:visibility="gone"
            android:id="@+id/item_delete"
            android:padding="20dp"
            android:background="#FC7903"
            android:textColor="#fff"
            android:textSize="23sp"
            android:gravity="center"
            android:text="删除"
            android:layout_width="wrap_content"
            android:layout_height="match_parent" />
    </LinearLayout>
    <TextView
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#D4D4D4"/>
</LinearLayout>

请求网络的封装类 okhttp+retrofit+Rxjava,我都建立在了common包里


OkHttpUtils.java

public class OkHttpUtils {
    private static OkHttpClient client = null;

    public static OkHttpClient getInstance(){
        if(client==null){
            synchronized (OkHttpUtils.class){
                if(client==null){
                    client = new OkHttpClient.Builder()
                            .connectTimeout(2000, TimeUnit.SECONDS)
                            .writeTimeout(2000,TimeUnit.SECONDS)
                            .readTimeout(2000,TimeUnit.SECONDS)
                            .build();
                }
            }
        }
        return client;
    }
}
RetrofitUtils.java 

public class RetrofitUtils {
    private static IGetService service = null;

    //http://api.tianapi.com/nba/?key=71e58b5b2f930eaf1f937407acde08fe&num=10
    //单例模式
    public static IGetService getInstance(){
        if(service==null){
            synchronized (RetrofitUtils.class){
                if(service==null){
                    Retrofit retrofit = new Retrofit.Builder()
                            .baseUrl("http://120.27.23.105")
                            .addConverterFactory(ScalarsConverterFactory.create())
                            .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                            .client(OkHttpUtils.getInstance())
                            .build();

                    service = retrofit.create(IGetService.class);
                }
            }
        }
        return service;
    }
}
IGetService.java 

public interface IGetService {

    //查询购物车,
    //http://120.27.23.105/product/getCarts?source=android&uid=1650
    @GET
    Observable<String> select(@Url String url, @QueryMap Map<String,String> map);

    //删除购物车
//    http://120.27.23.105/product/deleteCart?uid=1650&pid=1
    @GET
    Observable<String> delete(@Url String url, @QueryMap Map<String,String> map);

    //更新购物车
      // "token": "2FC3EF31EA25696D2715A971ADE38DE1",
//https://www.zhaoapi.cn/product/updateCarts?uid=1650&sellerid=1&pid=1&selected=0&num=10&token=2FC3EF31EA25696D2715A971ADE38DE1
    @GET
    Observable<String> update(@Url String url,@QueryMap Map<String,String> map);
}
AbstractObserver.java 

public abstract class AbstractObserver<T> implements Observer<String>{

    //不需要下面重写的四个方法,只需要自己写的两个抽象方法
    public abstract void onSuccess(T t);
    public abstract void onFailure();
    @Override
    public void onSubscribe(Disposable d) {

    }

    @Override
    public void onNext(String result) {
        //这里的s是请求网络传回来的string字符串
        Type type = getClass().getGenericSuperclass();
        Type[] types = ((ParameterizedType) type).getActualTypeArguments();
        Class clazz = (Class) types[0];//强转成类对象
        //使用gson解析
        Gson gson = new Gson();
        T t = (T) gson.fromJson(result,clazz);

        //调用抽象方法onSuccess
        onSuccess(t);
    }

    @Override
    public void onError(Throwable e) {
        try {
            onFailure();

        }catch (Exception e1){
            e.printStackTrace();
        }
    }

    @Override
    public void onComplete() {

    }
}
APIFactory.java 

public class APIFactory {

    private static APIFactory factory = null;

    public static APIFactory getInstance(){
        if(factory==null){
            synchronized (APIFactory.class){
                if(factory==null){
                    factory = new APIFactory();

                }
            }
        }
        return factory;
    }

    //查询购物车的方法
    public void select(String url, Map<String,String> map, Observer<String> observer){
        //调用retrofit工具类
        RetrofitUtils.getInstance().select(url,map)
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(observer);
    }

    //删除购物车的方法
    public void delete(String url, Map<String,String> map, Observer<String> observer){
        //调用retrofit工具类
        RetrofitUtils.getInstance().select(url,map)
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(observer);
    }
}
CartBean里面加入三个字段 

  //自己添加的三个字段
            private int isFirst = 1;//1为显示商铺
            private boolean item_check;//每个商品的选中状态
            private boolean shop_check;//商店的选中状态

            public int getIsFirst() {
                return isFirst;
            }

            public void setIsFirst(int isFirst) {
                this.isFirst = isFirst;
            }

            public boolean isItem_check() {
                return item_check;
            }

            public void setItem_check(boolean item_check) {
                this.item_check = item_check;
            }

            public boolean isShop_check() {
                return shop_check;
            }

            public void setShop_check(boolean shop_check) {
                this.shop_check = shop_check;
            }

使用MVP架构

MyModelCallBack

public interface MyModelCallBack {

    public void success(CartBean cartBean);
    public void failure();
}
MyModelCallBack2 
public interface MyModelCallBack2 {

    public void success(DeleteBean deleteBean);
    public void failure();
}
MyViewCallBack 

public interface MyViewCallBack {
    public void success(CartBean cartBean);
    public void failure();
}
MyViewCallBack2 

public interface MyViewCallBack2 {
    public void success(DeleteBean deleteBean);
    public void failure();
}

MyModel 

public class MyModel {
    public void select(final MyModelCallBack myModelCallBack) {

        final Map<String,String> map = new HashMap<>();
        map.put("source","android");
        map.put("uid","1650");

        //调用apifactory里面的方法
        APIFactory.getInstance().select("/product/getCarts", map, new AbstractObserver<CartBean>() {
            @Override
            public void onSuccess(CartBean cartBean) {
                myModelCallBack.success(cartBean);
            }

            @Override
            public void onFailure() {
                myModelCallBack.failure();
            }
        });
    }
}
MyModel2 

public class MyModel2 {
    public void delete(String pid,final MyModelCallBack2 myModelCallBack2) {

        final Map<String,String> map = new HashMap<>();
        map.put("source","android");
        map.put("pid",pid);
        map.put("uid","1650");

        //调用apifactory里面的方法
        APIFactory.getInstance().delete("/product/deleteCart", map, new AbstractObserver<DeleteBean>() {
            @Override
            public void onSuccess(DeleteBean deleteBean) {
                myModelCallBack2.success(deleteBean);
            }

            @Override
            public void onFailure() {
                myModelCallBack2.failure();
            }
        });
    }
}
MyPresenter 

public class MyPresenter {

    MyModel myModel;
    MyViewCallBack myViewCallBack;
    public MyPresenter(MyViewCallBack myViewCallBack) {
        this.myViewCallBack = myViewCallBack;
        this.myModel = new MyModel();
    }


    public void select() {
        myModel.select(new MyModelCallBack() {
            @Override
            public void success(CartBean cartBean) {
                myViewCallBack.success(cartBean);
            }

            @Override
            public void failure() {
                myViewCallBack.failure();
            }
        });
    }

    public void detach() {
        this.myViewCallBack = null;
    }
}
MyPresenter2 

public class MyPresenter2 {

    MyModel2 myModel2;
    MyViewCallBack2 myViewCallBack2;
    public MyPresenter2(MyViewCallBack2 myViewCallBack2) {
        this.myViewCallBack2 = myViewCallBack2;
        this.myModel2 = new MyModel2();
    }


    public void delete(String pid) {
        myModel2.delete(pid,new MyModelCallBack2() {
            @Override
            public void success(DeleteBean deleteBean) {
                myViewCallBack2.success(deleteBean);
            }

            @Override
            public void failure() {
                myViewCallBack2.failure();
            }
        });
    }

    public void detach() {
        this.myViewCallBack2 = null;
    }
}

适配器的代码RecyAdapter

public class RecyAdapter extends RecyclerView.Adapter<RecyAdapter.MyViewHolder> implements MyViewCallBack2,MyViewCallBack {

    MyPresenter myPresenter;
    //创建大的集合
    private List<CartBean.DataBean.ListBean> list;
    //存放商家的id和商家的名称的map集合
    private Map<String,String> map = new HashMap<>();

    MyPresenter2 myPresenter2 ;
    Context context;
    public RecyAdapter(Context context) {
        this.context = context;
        myPresenter = new MyPresenter(this);
        myPresenter2 = new MyPresenter2(this);
        //初始化fresco
        Fresco.initialize(context);
    }
    public void add(CartBean cartBean) {
        if(list==null){
            list = new ArrayList<>();
        }

        if(cartBean!=null) {
            for (CartBean.DataBean shop : cartBean.getData()) {
                map.put(shop.getSellerid(), shop.getSellerName());
                //第二层遍历里面的商品
                for (int i = 0; i < shop.getList().size(); i++) {
                    //添加到list集合里
                    list.add(shop.getList().get(i));
                }
            }
            //调用方法 设置显示或隐藏 商铺名
            setFirst(list);

        }    notifyDataSetChanged();
    }

    /**
     * 设置数据源,控制是否显示商家
     * */
    private void setFirst(List<CartBean.DataBean.ListBean> list) {
        if(list.size()>0){
            list.get(0).setIsFirst(1);
            //从第二条开始遍历
            for (int i=1;i<list.size();i++){
                //如果和前一个商品是同一家商店的
                if (list.get(i).getSellerid() == list.get(i-1).getSellerid()){
                    //设置成2不显示商铺
                    list.get(i).setIsFirst(2);
                }else{//设置成1显示商铺
                    list.get(i).setIsFirst(1);
                    //如果当前条目选中,把当前的商铺也选中
                    if (list.get(i).isItem_check()==true){
                        list.get(i).setShop_check(list.get(i).isItem_check());
                    }
                }
            }
        }
    }


    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = View.inflate(context, R.layout.recy_cart_item,null);
        MyViewHolder myViewHolder = new MyViewHolder(view);
        return myViewHolder;
    }

    @Override
    public void onBindViewHolder(final MyViewHolder holder, final int position) {
        /**
         * 设置商铺的 shop_checkbox和商铺的名字 显示或隐藏
         * */
        if(list.get(position).getIsFirst()==1){
            //显示商家
            holder.shop_checkbox.setVisibility(View.VISIBLE);
            holder.shop_name.setVisibility(View.VISIBLE);
            //设置shop_checkbox的选中状态
            holder.shop_checkbox.setChecked(list.get(position).isShop_check());
            holder.shop_name.setText(map.get(String.valueOf(list.get(position).getSellerid()))+" ＞");
        }else{//2
            //隐藏商家
            holder.shop_name.setVisibility(View.GONE);
            holder.shop_checkbox.setVisibility(View.GONE);
        }

        //拆分images字段
        String[] split = list.get(position).getImages().split("\\|");
        //设置商品的图片
        holder.item_face.setImageURI(Uri.parse(split[0]));
       // ImageLoader.getInstance().displayImage(split[0],holder.item_face);
        //控制商品的item_checkbox,,根据字段改变
        holder.item_checkbox.setChecked(list.get(position).isItem_check());
        holder.item_name.setText(list.get(position).getTitle());
        holder.item_price.setText(list.get(position).getPrice()+"");
        //调用customjiajian里面的方法设置 加减号中间的数字
        holder.customJiaJian.setEditText(list.get(position).getNum());

        holder.item_bianji.setTag(1);
        //点击item编辑才显示 自定义加减框
          holder.item_bianji.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View view) {
                 int tag= (int) holder.item_bianji.getTag();

                  if(tag==1) {
                      //加减号显示
                      holder.item_bianji.setText("完成");
                      holder.customJiaJian.setVisibility(View.VISIBLE);
                      //商品的名称隐藏
                      holder.item_name.setVisibility(View.GONE);
                      holder.item_yansechima.setVisibility(View.VISIBLE);
                      holder.item_price.setVisibility(View.GONE);
                      holder.item_delete.setVisibility(View.VISIBLE);
                      holder.item_bianji.setTag(2);
                  }else{
                     //相反的 隐藏的显示,显示的隐藏
                      //加减号显示
                      holder.item_bianji.setText("编辑");
                      holder.customJiaJian.setVisibility(View.GONE);
                      //商品的名称隐藏
                      holder.item_name.setVisibility(View.VISIBLE);
                      holder.item_yansechima.setVisibility(View.GONE);
                      holder.item_price.setVisibility(View.VISIBLE);
                      holder.item_delete.setVisibility(View.GONE);
                      holder.item_bianji.setTag(1);
                  }
              }
          });
        //设置点击多选框
        //商铺的shop_checkbox点击事件 ,控制商品的item_checkbox
        holder.shop_checkbox.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //先改变数据源中的shop_check
                list.get(position).setShop_check(holder.shop_checkbox.isChecked());

                for (int i=0;i<list.size();i++){
                    //如果是同一家商铺的 都给成相同状态
                    if(list.get(position).getSellerid()==list.get(i).getSellerid()){
                        //当前条目的选中状态 设置成 当前商铺的选中状态
                        list.get(i).setItem_check(holder.shop_checkbox.isChecked());
                    }
                }
                //刷新适配器
                notifyDataSetChanged();
                //调用求和的方法
                sum(list);
            }
        });

        //商品的item_checkbox点击事件,控制商铺的shop_checkbox
        holder.item_checkbox.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //先改变数据源中的item_checkbox
                list.get(position).setItem_check(holder.item_checkbox.isChecked());

                //反向控制商铺的shop_checkbox
                for (int i=0;i<list.size();i++){
                    for (int j=0;j<list.size();j++){
                        //如果两个商品是同一家店铺的 并且 这两个商品的item_checkbox选中状态不一样
                        if(list.get(i).getSellerid()==list.get(j).getSellerid() && !list.get(j).isItem_check()){
                            //就把商铺的shop_checkbox改成false
                            list.get(i).setShop_check(false);
                            break;
                        }else{
                            //同一家商铺的商品 选中状态都一样,就把商铺shop_checkbox状态改成true
                            list.get(i).setShop_check(true);
                        }
                    }
                }

                //更新适配器
                notifyDataSetChanged();
                //调用求和的方法
                sum(list);
            }
        });

        //删除条目的点击事件
        holder.item_delete.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                list.remove(position);//移除集合中的当前数据
                //删除完当前的条目 重新判断商铺的显示隐藏
                setFirst(list);

                //调用重新求和
                sum(list);
                notifyDataSetChanged();
            }
        });

        //加减号的监听,
        holder.customJiaJian.setCustomListener(new CustomJiaJian.CustomListener() {
            @Override
            public void jiajian(int count) {
                //改变数据源中的数量
                list.get(position).setNum(count);
                notifyDataSetChanged();
                sum(list);
            }

            @Override
            //输入值 求总价
            public void shuRuZhi(int count) {
                list.get(position).setNum(count);
                notifyDataSetChanged();
                sum(list);
            }
        });
    }

    //批量删除的按钮
    public void shanChu() {
        //存储删除的id
        final List<Integer> delete_listid = new ArrayList<>();
        for (int i=0;i<list.size();i++){
            if(list.get(i).isItem_check()){
                //将要删除的pid添加到这个集合里
                delete_listid.add(list.get(i).getPid());
            }
        }
        if (delete_listid.size()==0){
                //如果没有要删除的,就吐司提示
                Toast.makeText(context, "请选中至少一个商品后再删除", Toast.LENGTH_SHORT).show();
                return;
            }
         //弹框
        final AlertDialog.Builder dialog = new AlertDialog.Builder(context);
        dialog.setTitle("操作提示");
        dialog.setMessage("你确定要删除这"+delete_listid.size()+"个商品?");
        dialog.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
               //使用接口删除
                String a  = "";
                for(int j=0;j<delete_listid.size();j++) {

                   // a+=delete_listid.get(j)+"";
                    Integer integer = delete_listid.get(j);
                    String pid = String.valueOf(integer);
                    myPresenter2.delete(pid);
                   // list.remove(j);
                }
              //  Toast.makeText(context, a,Toast.LENGTH_SHORT).show();

            }
        }).setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                dialogInterface.cancel();
            }
        }).create().show();
    }

    //view层调用这个方法, 点击quanxuan按钮的操作
    public void quanXuan(boolean checked) {
        for (int i=0;i<list.size();i++){
            list.get(i).setShop_check(checked);
            list.get(i).setItem_check(checked);

        }
        notifyDataSetChanged();
        sum(list);
    }

    private void sum(List<CartBean.DataBean.ListBean> list) {
        int totalNum = 0;
        float totalMoney = 0.0f;
        boolean allCheck = true;
        for (int i=0;i<list.size();i++){
            if (list.get(i).isItem_check()){
                totalNum += list.get(i).getNum();
                totalMoney += list.get(i).getNum() * list.get(i).getPrice();
            }else{
                //如果有个未选中,就标记为false
                allCheck = false;
            }
        }
        //接口回调出去 把总价 总数量 和allcheck 传给view层
        updateListener.setTotal(totalMoney+"",totalNum+"",allCheck);
    }

    @Override
    public int getItemCount() {
        return list==null?0:list.size();
    }

    @Override
    public void success(DeleteBean deleteBean) {
       //调用第一个presenter的方法 重新查询数据
        myPresenter.select();

    }

    @Override
    public void success(CartBean cartBean) {
        list.clear();
        add(cartBean);
    }

    @Override
    public void failure() {
        System.out.println("网不好");
        Toast.makeText(context, "adapter网有点慢", Toast.LENGTH_SHORT).show();
    }


    public static class MyViewHolder extends RecyclerView.ViewHolder{
        private final CheckBox shop_checkbox;
        private final TextView shop_name;
        private final CheckBox item_checkbox;
        private final TextView item_name;
        private final TextView item_price;
        private final CustomJiaJian customJiaJian;
        //private final ImageView item_delete;
        private final TextView item_delete;
        private final ImageView item_face;
        private final TextView item_bianji;
        private final TextView item_yansechima;


        public MyViewHolder(View itemView) {
            super(itemView);
            //拿到控件
            shop_checkbox = (CheckBox) itemView.findViewById(R.id.shop_checkbox);
            shop_name = (TextView) itemView.findViewById(R.id.shop_name);
            item_checkbox = (CheckBox) itemView.findViewById(R.id.item_checkbox);
            item_name = (TextView) itemView.findViewById(R.id.item_name);
            item_price = (TextView) itemView.findViewById(R.id.item_price);
            customJiaJian = (CustomJiaJian) itemView.findViewById(R.id.custom_jiajian);
            //item_delete = (ImageView) itemView.findViewById(R.id.item_delete);
            item_delete = (TextView) itemView.findViewById(R.id.item_delete);

            item_face = (ImageView) itemView.findViewById(R.id.item_face);
            item_bianji = itemView.findViewById(R.id.item_bianji);
            item_yansechima = itemView.findViewById(R.id.item_yansechima);

        }
    }


    UpdateListener updateListener;
    public void setUpdateListener(UpdateListener updateListener){
        this.updateListener = updateListener;
    }
    //接口
    public interface UpdateListener{
        public void setTotal(String total,String num,boolean allCheck);
    }
}

MainActivity的代码 

public class MainActivity extends AppCompatActivity implements MyViewCallBack{

    private RecyclerView recyclerView;
    private TextView total_price;
    private TextView total_num;
    private CheckBox quanxuan;
    private MyPresenter myPresenter;
    private RecyAdapter recyAdapter;
    private TextView bianji;
    private LinearLayout linear_shanchu;
    private TextView quzhifu;
    private TextView shanchu;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        recyclerView = (RecyclerView) findViewById(R.id.recycler_View);
        total_price = (TextView) findViewById(R.id.total_price);
        total_num = (TextView) findViewById(R.id.total_num);
        quanxuan = (CheckBox) findViewById(R.id.quanxuan);
        bianji = findViewById(R.id.bianji);
        linear_shanchu = findViewById(R.id.linear_shanchu);
        quzhifu = findViewById(R.id.quzhifu);
        shanchu = findViewById(R.id.shanchu);

        bianji.setTag(1);//编辑设置tag
        quanxuan.setTag(1);//1为不选中
        LinearLayoutManager manager = new LinearLayoutManager(MainActivity.this,LinearLayoutManager.VERTICAL,false);

        myPresenter = new MyPresenter(this);
        recyAdapter = new RecyAdapter(this);
        //进入页面查询购物车的数据
        myPresenter.select();

        recyclerView.setLayoutManager(manager);
        recyclerView.setAdapter(recyAdapter);

        //调用recyAdapter里面的接口,设置 全选按钮 总价 总数量
        recyAdapter.setUpdateListener(new RecyAdapter.UpdateListener() {
            @Override
            public void setTotal(String total, String num, boolean allCheck) {
                //设置ui的改变
                total_num.setText("共"+num+"件商品");//总数量
                total_price.setText("总价 :¥"+total+"元");//总价
                if(allCheck){
                    quanxuan.setTag(2);
                    quanxuan.setBackgroundResource(R.drawable.shopcart_selected);
                }else{
                    quanxuan.setTag(1);
                    quanxuan.setBackgroundResource(R.drawable.shopcart_unselected);
                }
                quanxuan.setChecked(allCheck);
            }
        });

        //这里只做ui更改, 点击全选按钮,,调到adapter里面操作
        quanxuan.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //调用adapter里面的方法 ,,把当前quanxuan状态传递过去

                int tag = (int) quanxuan.getTag();
                if(tag==1){
                    quanxuan.setTag(2);
                    quanxuan.setBackgroundResource(R.drawable.shopcart_selected);
                }else{
                    quanxuan.setTag(1);
                    quanxuan.setBackgroundResource(R.drawable.shopcart_unselected);
                }

                recyAdapter.quanXuan(quanxuan.isChecked());
            }
        });

        //点击批量删除的按钮
        shanchu.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                recyAdapter.shanChu();
            }
        });

        //点击编辑按钮,
        bianji.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
               int tag = (int) bianji.getTag();
               if(tag==1){
                   bianji.setText("完成");
                   bianji.setTag(2);
                   quzhifu.setVisibility(View.GONE);
                   linear_shanchu.setVisibility(View.VISIBLE);
               }else{
                   bianji.setText("编辑");
                   bianji.setTag(1);
                   quzhifu.setVisibility(View.VISIBLE);
                   linear_shanchu.setVisibility(View.GONE);
               }
            }
        });

    }

    @Override
    public void success(CartBean cartBean) {
        if(cartBean!=null) {
            //System.out.println(cartBean.getData().get(0).getList().get(0).getTitle());
        //将返回的数据 添加到适配器里
            recyAdapter.add(cartBean);
        }
    }

    @Override
    public void failure() {
        System.out.println("网不好");
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                Toast.makeText(MainActivity.this, "网有点慢", Toast.LENGTH_SHORT).show();
            }
        });

    }
    @Override
    protected void onDestroy() {
        super.onDestroy();
        //调用p层的解除绑定
        myPresenter.detach();
    }
}



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