android 购物车案例

最新推荐文章于 2021-10-28 17:52:11 发布

qq_40573457

最新推荐文章于 2021-10-28 17:52:11 发布

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分类专栏：电商文章标签：购物车

本文链接：https://blog.youkuaiyun.com/qq_40573457/article/details/79061388

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在做一系列网络请求之前别忘了添加 compile 'com.squareup.okhttp3:okhttp:3.3.1' ---okhttp3依赖，再加上compile 'com.squareup.okhttp3:logging-interceptor:3.4.1' -- 拦截器来封装我们需要的公共参数--source=android，好了说的够清楚了，下面看看基本的实现吧！

mvp实现M层

public class ShoppingCarModel implements IShoppingCarModel{
    private android.os.Handler handler = new android.os.Handler();
    private OkHttp3Utils okHttp3Utils;

    @Override
    public void Getcarinfo(String uid, final IShoppingCarPerstenter iShoppingCarPerstenter) {
        String url = "https://www.zhaoapi.cn/product/getCarts?uid="+uid+"&source=android";
        okHttp3Utils = new OkHttp3Utils();
        okHttp3Utils.doGet(url, new Callback() {
            @Override
            public void onFailure(Call call, final IOException e) {
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        iShoppingCarPerstenter.onFraide(e.getMessage());
                    }
                });
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                final String result = response.body().string();
                System.out.println("结果："+result);
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        Gson gson = new Gson();
                        ShoppingCarBean shoppingCarBean = gson.fromJson(result, ShoppingCarBean.class);
                        iShoppingCarPerstenter.onSuccess(shoppingCarBean.getData());
                    }
                });

            }
        });
    }
}

public interface IShoppingCarModel {
    void Getcarinfo(String uid, IShoppingCarPerstenter iShoppingCarPerstenter);
}

实现P层

public class ShoppingCarPerstenter implements  IShoppingCarPerstenter{

    private IShoppingCarActrivcyView iShoppingView;
    private IShoppingCarModel iShoppingCarModel;

    public ShoppingCarPerstenter(IShoppingCarActrivcyView iShoppingView) {
        this.iShoppingView = iShoppingView;
        iShoppingCarModel = new ShoppingCarModel();
    }

    @Override
    public void onFraide(String msg) {
        if(iShoppingView!=null){
            iShoppingView.onFraide(msg);
        }
    }

    @Override
    public void onSuccess(List<ShoppingCarBean.DataBean> data) {
        if(iShoppingView!=null){
            iShoppingView.onSuccess(data);
        }
    }

    @Override
    public void Getcarinfo(String uid) {
        iShoppingCarModel.Getcarinfo(uid,this);
    }

    @Override
    public void onDestory() {
        if(iShoppingView==null){
            iShoppingView=null;
        }
    }
}
	public interface IShoppingCarPerstenter {
    void onFraide(String msg);
    void onSuccess(List<ShoppingCarBean.DataBean> data);
    void Getcarinfo(String uid);
    void onDestory();
}
实现V层
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.shoppingcar,container,false);

    //找到资源id
    elv = view.findViewById(R.id.elv);
    //添加适配器
    adapter = new MyAdapterShoppingCar(list,getActivity());
    elv.setAdapter(adapter);
    iShoppingCarPerstenter = new ShoppingCarPerstenter(this);
    //添加访问的参数
    iShoppingCarPerstenter.Getcarinfo("10698");
    return view;
}
//默认展开
private void defaultExpand(){

    for (int i = 0; i < adapter.getGroupCount();++i){
        elv.expandGroup(i);
    }

}

@Override
public void onFraide(String msg) {
    Toast.makeText(getActivity(),msg,Toast.LENGTH_SHORT).show();
}

@Override
public void onSuccess(List<ShoppingCarBean.DataBean> data) {
    this.list = data;
    adapter.setList(list);
    defaultExpand();
}
public interface IShoppingCarActrivcyView {
    void onFraide(String msg);
    void onSuccess(List<ShoppingCarBean.DataBean> data);
}
二级列表的适配器类
public class MyAdapterShoppingCar extends BaseExpandableListAdapter{
    private List<ShoppingCarBean.DataBean> list;
    private Context context;

    public void setList(List<ShoppingCarBean.DataBean> data) {
        this.list = data;
        notifyDataSetChanged();
    }
    public MyAdapterShoppingCar(List<ShoppingCarBean.DataBean> list, Context context) {
        this.context = context;
    }


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

    @Override
    public int getChildrenCount(int groupPosition) {
        return list != null && list.get(groupPosition).getList() != null ? list.get(groupPosition).getList().size() : 0;
    }

    @Override
    public Object getGroup(int groupPosition) {
        return list.get(groupPosition);
    }

    @Override
    public Object getChild(int groupPosition, int childPosition) {
        return list.get(groupPosition).getList().get(childPosition);
    }

    @Override
    public long getGroupId(int groupPosition) {
        return groupPosition;
    }

    @Override
    public long getChildId(int groupPosition, int childPosition) {
        return childPosition;
    }

    @Override
    public boolean hasStableIds() {
        return false;
    }

    @Override
    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
       if(convertView==null){
           convertView = LayoutInflater.from(context).inflate(R.layout.group,parent,false);
       }
       return convertView;
    }

    @Override
    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {

        if(convertView==null){
            convertView = LayoutInflater.from(context).inflate(R.layout.childen,parent,false);
        }
        //商品选择
        CheckBox ck_child_choosed = convertView.findViewById(R.id.ck_child_choose);
        //商品图片
        ImageView iv_show_pic = convertView.findViewById(R.id.iv_show_pic);
        //商品主标题
        TextView tv_commodity_name = convertView.findViewById(R.id.tv_commodity_name);
        //商品副标题
        TextView tv_commodity_attr = convertView.findViewById(R.id.tv_commodity_attr);
        //商品价格
        TextView tv_commodity_price = convertView.findViewById(R.id.tv_commodity_price);
        //商品数量
        TextView tv_commodity_num = convertView.findViewById(R.id.tv_commodity_num);
        //商品减
        TextView iv_sub = convertView.findViewById(R.id.iv_sub);
        //商品加减中的数量变化
        final TextView tv_commodity_show_num = convertView.findViewById(R.id.tv_commodity_show_num);
        //商品加
        TextView iv_add = convertView.findViewById(R.id.iv_add);
        //删除按钮
        Button btn_commodity_delete = convertView.findViewById(R.id.btn_commodity_delete);

        //设置文本信息
        tv_commodity_name.setText(list.get(groupPosition).getList().get(childPosition).getTitle());
        tv_commodity_attr.setText(list.get(groupPosition).getList().get(childPosition).getSubhead());
        tv_commodity_price.setText("￥"+list.get(groupPosition).getList().get(childPosition).getPrice());
        tv_commodity_num.setText("x"+list.get(groupPosition).getList().get(childPosition).getNum());
        tv_commodity_show_num.setText(list.get(groupPosition).getList().get(childPosition).getNum()+"");

        String images = list.get(groupPosition).getList().get(childPosition).getImages();

        String[] urls = images.split("\\|");


        //加载商品图片
        Glide.with(context)
                .load(urls[0])
                .crossFade()
                .into(iv_show_pic);
        return convertView;

    }

    @Override
    public boolean isChildSelectable(int groupPosition, int childPosition) {
        return false;
    }
}
布局
头部
LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
    android:layout_height="35dp"
    android:background="@color/colorAccent"
    android:orientation="horizontal"
    >
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="35dp"
            android:layout_weight="1"
            android:textColor="#fff"
            android:gravity="center"
            android:textSize="20sp"
            android:text="返回"
            />
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="35dp"
            android:textColor="#fff"
            android:textSize="20sp"
            android:layout_weight="1"
            android:gravity="center"
            android:text="购物车"
            />
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="35dp"
            android:textColor="#fff"
            android:textSize="20sp"
            android:layout_weight="1"
            android:gravity="center"
            android:text="编辑"
            />
</LinearLayout>
底部
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    >

        <CheckBox
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="20sp"
            android:text="全选"
            />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="20sp"
            android:text="合计:"
            android:layout_marginLeft="10dp"
            />
        <Button
            android:layout_width="150dp"
            android:layout_height="wrap_content"
            android:text="结算"
            android:textSize="20sp"
            android:textColor="#fff"
            android:layout_marginLeft="106dp"
            android:background="#e90c0c"
            />


</LinearLayout>
子布局
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <CheckBox
        android:id="@+id/ck_child_choose"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:layout_marginLeft="5dp"
        android:scaleX="0.6"
        android:scaleY="0.6" />
    <ImageView
        android:id="@+id/iv_show_pic"
        android:layout_width="70dp"
        android:layout_height="80dp"
        android:layout_centerVertical="true"
        android:layout_marginLeft="5dp"
        android:src="@mipmap/ic_launcher"
        android:layout_toRightOf="@id/ck_child_choose" />
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_marginTop="15dp"
        android:layout_toRightOf="@id/iv_show_pic"
        android:orientation="vertical">
        <TextView
            android:id="@+id/tv_commodity_name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="酒红色纯红色纯羊毛西服套装"
            android:textColor="@android:color/black"
            android:textSize="12sp"
            android:textStyle="bold" />
        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal">
            <TextView
                android:id="@+id/tv_commodity_attr"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="3dp"
                android:text="属性:粉蓝色"
                android:textSize="12sp"
                android:textColor="@color/colorPrimary" />
        </LinearLayout>
        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="4dp"
            android:orientation="horizontal">
            <TextView
                android:id="@+id/tv_commodity_price"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="￥390"
                android:textColor="@android:color/holo_red_dark"
                android:textSize="12sp"
                android:textStyle="bold" />
            <TextView
                android:id="@+id/tv_commodity_num"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginLeft="20dp"
                android:text="x1"
                android:textColor="@android:color/darker_gray" />
            <LinearLayout
                android:id="@+id/rl_edit"
                android:layout_width="120dp"
                android:background="@android:color/holo_orange_light"
                android:layout_height="30dp"
                android:layout_marginLeft="20dp"
                >
                <TextView
                    android:id="@+id/iv_sub"
                    android:layout_width="0dp"
                    android:layout_weight="1"
                    android:gravity="center"
                    android:textColor="@android:color/black"
                    android:background="@android:color/white"
                    android:layout_margin="1dp"
                    android:layout_height="match_parent"
                    android:text=" - " />

                <TextView
                    android:id="@+id/tv_commodity_show_num"
                    android:layout_width="0dp"
                    android:layout_weight="1"
                    android:gravity="center"
                    android:background="@android:color/white"
                    android:layout_margin="1dp"
                    android:layout_height="match_parent"
                    android:text="1"
                    />

                <TextView
                    android:id="@+id/iv_add"
                    android:layout_width="0dp"
                    android:layout_weight="1"
                    android:gravity="center"
                    android:layout_margin="1dp"
                    android:background="@android:color/white"
                    android:layout_height="match_parent"
                    android:text=" + " />
            </LinearLayout>
        </LinearLayout>
    </LinearLayout>
    <Button
        android:id="@+id/btn_commodity_delete"
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:gravity="center"
        android:text="x"
        android:background="@android:color/holo_blue_light"
        android:textSize="20sp"
        android:textColor="@android:color/holo_green_dark"
        android:layout_margin="5dp"
        android:visibility="gone" />

</RelativeLayout>
父布局
<CheckBox
    android:id="@+id/ck_group_choosed"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="商家1"
    android:gravity="center_vertical"
    android:textSize="25sp"
    android:focusable="false"
    android:padding="10dp"/>