一级列表购物车的简单实现（网络接口）

来源：互联网发布：vb select选中触发事件编辑：程序博客网时间：2024/04/29 11:54

导入依赖

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compile 'com.squareup.okhttp3:okhttp:3.9.0'  
   compile 'com.google.code.gson:gson:2.8.2'  
   compile 'com.android.support:recyclerview-v7:25.0.0'  
   compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'  

values下面的colors.xml,方便布局里面的统一调用

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<?xml version="1.0" encoding="utf-8"?>  
<resources>  
    <color name="colorPrimary">#3F51B5</color>  
    <color name="colorPrimaryDark">#303F9F</color>  
    <color name="colorAccent">#FF4081</color>  
  
    <!--背景颜色-->  
    <color name="toolbar_color">#f8f8f8</color>  
    <color name="background_color">#f6f6f6</color>  
    <color name="edittext_noenter_color">#f5f5f5</color>  
  
    <!--辅助色-->  
    <color name="support_yellow">#f9a340</color>  
    <color name="btn_unselect_color">#f4736e</color>  
  
    <!--分割线-->  
    <color name="splitline_color">#dddddd</color>  
  
    <!--文字-->  
    <color name="notice_text_color">#999999</color>  
    <color name="default_text_color">#666666</color>  
    <color name="main_black_text">#333333</color>  
    <color name="main_red_text">#e53e42</color>  
    <color name="main_white_text">#ffffff</color>  
    <color name="protocol_text">#3C68FE</color>  
  
    <!--图标-->  
    <color name="abate_icon_color">#bbbbbb</color>  
    <color name="default_icon_color">#999999</color>  
    <color name="pressed_icon_color">#e53e42</color>  
  
    <!--CycleViewPager-->  
    <color name="cycle_image_bg">#44222222</color>  
  
    <!-- 透明 -->  
    <color name="transparent">#00000000</color>;  
  </resources>  

去结算这个文字的背景自己画的小圆点

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<shape xmlns:android="http://schemas.android.com/apk/res/android">  
  
    <corners android:radius="200dp"></corners>  
    <solid android:color="@color/pressed_icon_color"></solid>  
</shape>  

activity_main.xml里面的布局 ,上面是一个recyclerview ,下面是一个linearlayout,装着全选 ,总价,总数量,去结算等

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<?xml version="1.0" encoding="utf-8"?>  
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    xmlns:tools="http://schemas.android.com/tools"  
    android:layout_width="match_parent"  
    android:orientation="vertical"  
    android:layout_height="match_parent"  
    >  
  
    <android.support.v7.widget.RecyclerView  
                android:id="@+id/second_recyview"  
                android:layout_width="match_parent"  
                android:layout_height="0dp"  
                android:layout_weight="1"  
                />  
  
    <LinearLayout  
            android:layout_alignBottom="@+id/linear"  
            android:padding="10dp"  
            android:layout_width="match_parent"  
            android:layout_height="wrap_content"  
            android:orientation="horizontal"  
            android:background="@color/main_white_text"  
            android:gravity="center_vertical"  
            android:id="@+id/ll_pay"  
            android:layout_alignParentBottom="true"  
            >  
  
        <CheckBox  
            android:button="@null"  
            android:id="@+id/quanxuan"  
            android:background="@drawable/shopcart_unselected"  
            android:layout_width="wrap_content"  
            android:layout_height="wrap_content" />  
  
            <TextView  
                android:textSize="23sp"  
                android:id="@+id/all_select"  
                android:layout_width="wrap_content"  
                android:layout_height="wrap_content"  
                android:layout_marginLeft="10dp"  
                android:text="全选"  
                android:drawablePadding="5dp"  
                />  
  
            <LinearLayout  
                android:layout_width="0dp"  
                android:layout_height="wrap_content"  
                android:layout_weight="1"  
                android:orientation="vertical"  
                >  
  
                <TextView  
                    android:id="@+id/totalprice"  
                    android:layout_width="wrap_content"  
                    android:layout_height="wrap_content"  
                    android:paddingLeft="10dp"  
                    android:paddingTop="10dp"  
                    android:text="总价：¥0"  
                    android:textColor="@color/main_red_text"  
                    android:textSize="20sp"  
                    />  
  
                <TextView  
                    android:id="@+id/totalnum"  
                    android:layout_width="wrap_content"  
                    android:layout_height="wrap_content"  
                    android:paddingLeft="10dp"  
                    android:text="共0件商品"  
                    android:textSize="18sp"  
                    android:paddingBottom="10dp"  
                    />  
  
            </LinearLayout>  
  
            <TextView  
                android:id="@+id/qujiesuan"  
                android:layout_width="wrap_content"  
                android:layout_height="wrap_content"  
                android:background="@drawable/login_btn"  
                android:text="去结算"  
                android:textSize="23sp"  
                android:paddingLeft="30dp"  
                android:paddingRight="30dp"  
                android:paddingTop="10dp"  
                android:paddingBottom="10dp"  
                android:textColor="@color/main_white_text"  
                android:layout_marginRight="10dp"  
                />  
  
        </LinearLayout>  
  
</LinearLayout>  

recyclerview的适配器的布局 ,,里面引入了自定义的customview的布局

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<?xml version="1.0" encoding="utf-8"?>  
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    android:layout_width="match_parent"  
    android:orientation="vertical"  
    android:layout_height="match_parent">  
  
    <LinearLayout  
        android:layout_width="match_parent"  
        android:layout_height="wrap_content"  
        android:gravity="center_vertical"  
        >  
  
        <LinearLayout  
            android:layout_width="match_parent"  
            android:layout_height="wrap_content"  
            android:orientation="vertical"  
            >  
  
            <View  
                android:layout_width="match_parent"  
                android:layout_height="1dp"  
                android:background="@color/background_color"  
                ></View>  
  
            <LinearLayout  
                android:layout_width="match_parent"  
                android:layout_height="wrap_content">  
  
                <ImageView  
                    android:id="@+id/shopcart_cloth_select"  
                    android:layout_width="wrap_content"  
                    android:layout_height="wrap_content"  
                    android:src="@drawable/shopcart_selected"  
                    android:layout_marginLeft="15dp"  
                    android:layout_marginRight="15dp"  
                    android:visibility="invisible"  
                    />  
  
                <TextView  
                    android:id="@+id/tv_item_shopcart_clothname"  
                    android:layout_width="match_parent"  
                    android:layout_height="wrap_content"  
                    android:text="穿秋装情侣字母徽章风衣"  
                    android:paddingLeft="10dp"  
                    android:paddingTop="10dp"  
                    android:textSize="20sp"  
                    />  
            </LinearLayout>  
            <LinearLayout  
                android:layout_width="match_parent"  
                android:layout_height="wrap_content"  
                android:orientation="horizontal"  
                android:gravity="center_vertical"  
                >  
  
                <CheckBox  
                    android:id="@+id/cb_item_shopcart_clothselect"  
                    android:layout_width="30dp"  
                    android:layout_height="30dp"  
                    android:layout_marginLeft="10dp"  
                    />  
  
                <ImageView  
                    android:src="@mipmap/ic_launcher"  
                    android:id="@+id/iv_item_shopcart_cloth_pic"  
                    android:layout_width="90dp"  
                    android:layout_height="90dp"  
                    android:layout_margin="10dp"  
                    />  
  
                <LinearLayout  
                    android:layout_width="0dp"  
                    android:layout_height="wrap_content"  
                    android:layout_weight="1"  
                    android:orientation="vertical"  
                    >  
  
                    <TextView  
                        android:id="@+id/tv_item_shopcart_cloth_price"  
                        android:layout_width="wrap_content"  
                        android:layout_height="wrap_content"  
                        android:text="¥185"  
                        android:textColor="@color/main_red_text"  
                        android:textSize="20sp"  
                        />  
  
                    <LinearLayout  
                        android:layout_width="wrap_content"  
                        android:layout_height="wrap_content"  
                        android:layout_marginTop="5dp"  
                        android:layout_marginBottom="5dp"  
                        >  
  
                        <TextView  
                            android:id="@+id/tv_item_shopcart_cloth_color"  
                            android:layout_width="wrap_content"  
                            android:layout_height="wrap_content"  
                            android:text="颜色：黑色"  
                            android:textSize="18sp"  
                            />  
  
                        <TextView  
                            android:id="@+id/tv_item_shopcart_cloth_size"  
                            android:layout_width="wrap_content"  
                            android:layout_height="wrap_content"  
                            android:text="尺寸：XL"  
                            android:textSize="18sp"  
                            android:layout_marginLeft="10dp"  
                            />  
  
                    </LinearLayout>  
  
                    <com.example.a171118_zhouliu_disanzhou.custom.CustomView  
                        android:layout_width="100dp"  
                        android:layout_height="50dp"  
                        android:id="@+id/custom_View"  
                        android:layout_marginLeft="20dp"/>  
  
                </LinearLayout>  
  
                <View  
                    android:layout_width="1dp"  
                    android:layout_height="match_parent"  
                    android:layout_marginTop="10dp"  
                    android:layout_marginBottom="10dp"  
                    android:background="@color/splitline_color"  
                    ></View>  
  
                <ImageView  
                    android:id="@+id/iv_item_shopcart_cloth_delete"  
                    android:layout_width="wrap_content"  
                    android:layout_height="wrap_content"  
                    android:padding="20dp"  
                    android:src="@drawable/shopcart_delete"  
                    />  
  
            </LinearLayout>  
  
        </LinearLayout>  
  
    </LinearLayout>  
  
    <View  
        android:layout_width="match_parent"  
        android:layout_height="1dp"  
        android:background="@color/background_color"  
        ></View>  
  
</LinearLayout>  

自定义组合控件的customview的布局

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<?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:layout_height="match_parent">  
  
    <Button  
        android:background="#00FFFFFF"  
        android:gravity="center"  
        android:textStyle="bold"  
        android:textSize="20sp"  
        android:text="一"  
        android:id="@+id/reverse"  
        android:layout_width="50dp"  
        android:layout_height="30dp" />  
  
    <EditText  
        android:id="@+id/count"  
        android:textSize="23sp"  
        android:textStyle="bold"  
        android:text="1"  
        android:layout_width="wrap_content"  
        android:layout_height="50dp" />  
  
    <Button  
        android:textStyle="bold"  
        android:textSize="22sp"  
        android:id="@+id/add"  
        android:gravity="center"  
        android:background="#00FFFFFF"  
        android:layout_width="50dp"  
        android:layout_height="30dp"  
        android:text="+"/>  
</LinearLayout>  

写CustomView类继承LinearLayout,, 填充customView.xml的布局

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public class CustomView extends LinearLayout{  
  
    private Button reverse;  
    private Button add;  
    private EditText editText;  
    private int mCount;  
    Context context;  
    public CustomView(Context context) {  
        super(context);  
    }  
  
    public CustomView(Context context, AttributeSet attrs) {  
        super(context, attrs);  
        this.context =context;  
  
        View view = View.inflate(context, R.layout.custom_view,this);  
  
        reverse = (Button) view.findViewById(R.id.reverse);  
        add = (Button) view.findViewById(R.id.add);  
        editText = (EditText) view.findViewById(R.id.count);  
  
       //点击减号,,数量减1  
        reverse.setOnClickListener(new OnClickListener() {  
            @Override  
            public void onClick(View v) {  
                String content = editText.getText().toString().trim();  
                //转成int  
                int count = Integer.valueOf(content);  
                if(count>1){  
                    mCount = count-1;  
                    editText.setText(mCount+"");//设置数量  
  
                    //接口回调 把mCount暴露出去,,adapter里面调用  
                   if(clickListener!=null){  
                       clickListener.click(mCount);  
                   }  
                }  
            }  
        });  
  
        //点击加号 数量加1  
        add.setOnClickListener(new OnClickListener() {  
            @Override  
            public void onClick(View v) {  
                String content = editText.getText().toString().trim();  
                int count = Integer.valueOf(content);  
  
                mCount = count+1;//赋值给mcount  
                editText.setText(count+"");  
  
                if(clickListener!=null){  
                    clickListener.click(mCount);  
                }  
            }  
        });  
  
  
    }  
  
    ClickListener clickListener;  
    public void setClickListener(ClickListener clickListener){  
        this.clickListener = clickListener;  
    }  
    //设置加减号的监听  
    public interface ClickListener{  
        public void click(int count);//把当前的数量传过去  
    }  
  
    //设置初始的数量值  
    public void getCount(int count){  
        editText.setText(count+"");//设置初始数量  
    }  
  
  
  
    public CustomView(Context context, AttributeSet attrs, int defStyleAttr) {  
        super(context, attrs, defStyleAttr);  
    }  
}  

RecyclerAdapter 适配器里面的,, 实现customview里面的接口

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public class SecondRecyAdapter extends RecyclerView.Adapter<SecondRecyAdapter.MyViewholder1>{  
  
    Context context;  
    List<SecondBean.DataBean.ListBean> listShop;  
  
    public SecondRecyAdapter(Context context, List<SecondBean.DataBean.ListBean> listShop) {  
        this.listShop = listShop;  
        this.context =  context;  
    }  
  
  
    @Override  
    public MyViewholder1 onCreateViewHolder(ViewGroup parent, int viewType) {  
        View view = View.inflate(context,R.layout.second_recy_adapter,null);  
        MyViewholder1 myviewholder1 = new MyViewholder1(view);  
        return myviewholder1;  
    }  
  
    @Override  
    public void onBindViewHolder(final MyViewholder1 holder, final int position) {  
  
        String images = listShop.get(position).getImages();  
        String[] split = images.split("\\|");  
  
        //设置商品图片  
        ImageLoader.getInstance().displayImage(split[0],holder.ivPic);  
        //调用customiew类里面的方法,,设置商品名称  
        holder.customView.getCount(listShop.get(position).getNum());  
      // holder.tvShopName.setText(listShop.get(position).getSellerid());  
        holder.tvName.setText(listShop.get(position).getTitle());  
        holder.tvPrice.setText(listShop.get(position).getPrice()+"");  
        //给 每个条目的选中按钮 设置状态,根据数据源里面的check  
        holder.product_select.setChecked(listShop.get(position).isCheck());  
        //主动点击每个条目前面的多选框,点击事件  
        holder.product_select.setOnClickListener(new View.OnClickListener() {  
            @Override  
            public void onClick(View v) {  
  
               //拿到当前多选框的选中状态,,赋值给数据源里面,,holder.product_select.isChecked()  
               listShop.get(position).setCheck(holder.product_select.isChecked());  
                notifyDataSetChanged();  
  
                if(checkBoxListener != null){  
                    //secondActivity调用方法  
                    checkBoxListener.checkBox(listShop);  
                }  
  
            }  
        });  
  
        //customview中的加减号的点击监听  
        holder.customView.setClickListener(new CustomView.ClickListener() {  
            @Override  
            public void click(int count) {  
                //count是当前的数量  
                //根据传来的count 改变数据源里的num  
                listShop.get(position).setNum(count);  
                notifyDataSetChanged();  
  
                //接口回调出去..  
                if(customViewListener!=null){  
                    //把当前集合传过去  
                    customViewListener.customClick(listShop);  
                }  
            }  
        });  
  
        //删除当前条目的点击事件  
        holder.ivDelete.setOnClickListener(new View.OnClickListener() {  
            @Override  
            public void onClick(View v) {  
                //改变数据源中的 删除当前条目  
                listShop.remove(position);  
                notifyDataSetChanged();  
  
                //接口回调出去  
                if(delItemListener!=null){  
                    delItemListener.delItem(listShop);  
                }  
            }  
        });  
  
  
 }  
  
    @Override  
    public int getItemCount() {  
        return listShop==null?0:listShop.size();  
    }  
  
    public static class MyViewholder1 extends RecyclerView.ViewHolder {  
  
        private final ImageView ivDelete;  
        private final TextView tvPrice;  
        private final TextView tvName;  
        private final ImageView ivSelect;  
        CustomView customView;  
        private final ImageView ivPic;  
        private final CheckBox product_select;//每个条目前面的多选框,  
        // private final TextView tvShopName;//商铺名称  
  
        public MyViewholder1(View itemView) {  
            super(itemView);  
            //找到所有的控件  
            ivDelete = (ImageView) itemView.findViewById(R.id.iv_item_shopcart_cloth_delete);  
            tvPrice = (TextView) itemView.findViewById(R.id.tv_item_shopcart_cloth_price);  
            tvName = (TextView) itemView.findViewById(R.id.tv_item_shopcart_clothname);  
           ivSelect = (ImageView) itemView.findViewById(R.id.shopcart_cloth_select);  
            ivPic = (ImageView) itemView.findViewById(R.id.iv_item_shopcart_cloth_pic);  
            product_select = (CheckBox) itemView.findViewById(R.id.cb_item_shopcart_clothselect);  
            customView = (CustomView) itemView.findViewById(R.id.custom_View);  
           // tvShopName = (TextView) itemView.findViewById(R.id.tv_item_shopcart_shopname);  
  
  
        }  
    }  
  
    //返回当前集合的方法  
    public List<SecondBean.DataBean.ListBean> getList(){  
        return listShop;  
    }  
    //实现多选框的监听  
    CheckBoxListener checkBoxListener;  
    public void setCheckBoxListener(CheckBoxListener checkBoxListener){  
        this.checkBoxListener = checkBoxListener;  
    }  
  
    //每个条目前面的多选框点击的监听  
    public interface CheckBoxListener{  
        public void checkBox(List<SecondBean.DataBean.ListBean> list);  
    }  
  
    //实现加减号 改变数量和总价  
     public interface CustomViewListener{  
        public void customClick(List<SecondBean.DataBean.ListBean> list);  
    }  
    //实现加减号 的监听  
    CustomViewListener customViewListener;  
    public void setCustomViewListener(CustomViewListener customViewListener){  
        this.customViewListener = customViewListener;  
    }  
  
    //实现删除按钮的点击事件  
    public interface DelItemListener{  
        public void delItem(List<SecondBean.DataBean.ListBean> list);  
    }  
    DelItemListener delItemListener;  
    public void setDelItemListener(DelItemListener delItemListener){  
        this.delItemListener = delItemListener;  
    }  
  
}  

Mainactivity里面的,,求总价求总数量实现recyAdapter里面的接口

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public class SecondActivity extends AppCompatActivity {  
  
    private TextView all_select;//全选按钮  
    private TextView totalPrice;//总价  
    private TextView totalNum;//总件数  
    private List<SecondBean.DataBean.ListBean> listShop = new ArrayList<>();  
    private SecondRecyAdapter secondRecyAdapter;  
  
    boolean mSelect = false;  
    private RecyclerView second_recyview;  
    private boolean shifoucheck;  
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_second);  
  
        //获取控件  
  
        second_recyview = (RecyclerView) findViewById(R.id.second_recyview);  
        all_select = (TextView) findViewById(R.id.quanxuan);//全选按钮  
        totalPrice = (TextView) findViewById(R.id.totalprice);  
        totalNum = (TextView) findViewById(R.id.totalnum);  
  
       // secondRecyAdapter = new SecondRecyAdapter(SecondActivity.this,listShop);;  
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(SecondActivity.this,LinearLayoutManager.VERTICAL,false);  
        second_recyview.setLayoutManager(linearLayoutManager);  
        //请求网络数据  
        getData();  
        //请求完网络数据 设置适配器  
        if(secondRecyAdapter==null){  
            secondRecyAdapter = new SecondRecyAdapter(SecondActivity.this,listShop);  
            second_recyview.setAdapter(secondRecyAdapter);  
        }else{  
            secondRecyAdapter.notifyDataSetChanged();  
        }  
  
        //进入页面先给总的全选按钮设置一个标记tag tag为1  不选中, tag为2选中  
        all_select.setTag(1);//默认不选中  
  
        //为了通过all_select改变 每条数据的选中状态  
        shifoucheck = false;  
        //全选按钮的点击事件  
        all_select.setOnClickListener(new View.OnClickListener() {  
            @Override  
            public void onClick(View v) {  
                //设置图片和字在一个控件里面,,图片的大小不会打乱  
                   // Drawable left = getResources().getDrawable(R.drawable.shopcart_selected);  
                   // all_select.setCompoundDrawablesWithIntrinsicBounds(left,null,null,null);  
  
                //获取all_select 的tag  
                int tag = (int) all_select.getTag();  
                if(tag==1){  
                    //如果是没选中,点击以后 改变成选中  
                    all_select.setTag(2);  
                    all_select.setBackgroundResource(R.drawable.shopcart_selected);  
                    //控制所有的条目都改成 选中  
                    shifoucheck = true;  
                }else{  
                    //如果当前是选中的 就设置成未选中  
                    all_select.setTag(1);  
                    all_select.setBackgroundResource(R.drawable.shopcart_unselected);  
                    shifoucheck = false;  
                }  
  
                //然后遍历集合里面的所有条目都设置成选中  
                for (SecondBean.DataBean.ListBean bean : listShop){  
                    //给数据源里面的check 标记为 上面改变的  
                    bean.setCheck(shifoucheck);  
                }  
                secondRecyAdapter.notifyDataSetChanged();//刷新适配器  
                sum(secondRecyAdapter.getList());//把适配器里面的集合传进去,求和  
          }  
        });  
  
        //调用适配器里面的选中多选框的监听  
        secondRecyAdapter.setCheckBoxListener(new SecondRecyAdapter.CheckBoxListener() {  
            @Override  
            public void checkBox(List<SecondBean.DataBean.ListBean> list) {  
                //调用求和的方法  
                sum(list);  
            }  
        });  
  
        //调用适配器里面的 加减号的监听  
        secondRecyAdapter.setCustomViewListener(new SecondRecyAdapter.CustomViewListener() {  
            @Override  
            public void customClick(List<SecondBean.DataBean.ListBean> list) {  
                sum(list);  
            }  
        });  
  
        //调用适配器里面的 删除当前条目的方法  
        secondRecyAdapter.setDelItemListener(new SecondRecyAdapter.DelItemListener() {  
            @Override  
            public void delItem(List<SecondBean.DataBean.ListBean> list) {  
                sum(list);  
            }  
        });  
  
    }  
  
  
    //求总价的总数量的方法  
    public void sum(List<SecondBean.DataBean.ListBean> listShop){  
        float price = 0;  
         int count = 0;  
        //反着全选的控制,,,控制下面的总的 全选按钮  
        boolean allCheck = true;  
        for (SecondBean.DataBean.ListBean bean : listShop){  
            if(bean.isCheck()){  
                //如果当前的check为true.计算总价  
                price += bean.getPrice()*bean.getNum();  
                count += bean.getNum();  
            }else{  
                //只要有一个为没选中,就标记,改变下面的全选按钮  
                allCheck = false;  
  
            }  
  
            //设置下面的总价和数量  
            totalNum.setText("共"+count+"件商品");  
            totalPrice.setText("总价: "+price);  
        }  
  
        //根据allcheck 改变下面的全选按钮的值  
        if(allCheck){  
            //如果遍历出来的所有check都是true,就全选也选中  
            all_select.setTag(2);  
            all_select.setBackgroundResource(R.drawable.shopcart_selected);  
        }else{  
            all_select.setTag(1);  
            all_select.setBackgroundResource(R.drawable.shopcart_unselected);  
        }  
  
    }  
  
  
    //请求网络数据解析  
    private void getData() {  
        String path = "http://120.27.23.105/product/getCarts?uid=100";  
        OkhttpUtils.getInstance().asy(null, path, new AbstractUiCallBack<SecondBean>() {  
  
             @Override  
            public void success(SecondBean secondBean) {  
               // System.out.println(secondBean.getData().get(0).getList().get(0).getTitle());  
               //添加到集合里 data里面的list  
                for(int i=0;i<secondBean.getData().size();i++){  
                    //将集合里面的list集合添加到大集合里去  
                    listShop.addAll(secondBean.getData().get(i).getList());  
                }  
                // System.out.println(listShop.get(0).getTitle());  
                //设置适配器  
               /*if(secondRecyAdapter==null){  
                    secondRecyAdapter = new SecondRecyAdapter(SecondActivity.this,listShop);  
                second_recyview.setAdapter(secondRecyAdapter);  
                }else{  
                    secondRecyAdapter.notifyDataSetChanged();  
                }*/  
  
            }  
  
            @Override  
            public void failure(Exception e) {  
  
            }  
        });  
    }  
}  

新建类继承application

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public class App extends Application{  
    @Override  
    public void onCreate() {  
        super.onCreate();  
  
        ImageLoaderConfiguration configuration = new ImageLoaderConfiguration.Builder(this).build();  
        ImageLoader.getInstance().init(configuration);  
    }  
}  

清单文件中声明

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 <application  
        android:name=".aplica.App"  
 </application>  

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