用MVP框架实现购物车

最新推荐文章于 2019-03-19 20:07:56 发布

qq_42828340

最新推荐文章于 2019-03-19 20:07:56 发布

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CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/qq_42828340/article/details/86560298

C层

public interface ShopContract {

    public interface ShopView{
        public void showShopData(String message);
    }
    public interface ShopPresenter<ShopView>{
        public void attachView(ShopView shopView);
        public void detachView(ShopView shopView);

        public void requsetShopData();
    }
    public interface ShopModel{
        public void containShopData(CallBack callBack);

        public interface CallBack{
            public void reponseShopData(String message);
        }
    }
}

P层

public class ShopModelImpl implements ShopContract.ShopModel {
    @Override
    public void containShopData(final CallBack callBack) {
        OkGo.<String>get(Constant.Shop).execute(new StringCallback() {
            @Override
            public void onSuccess(Response<String> response) {
                String reponseData = response.body().toString();
                callBack.reponseShopData(reponseData);
            }
        });
    }
}

M层

public class ShopPresenterImpl implements ShopContract.ShopPresenter<ShopContract.ShopView> {

    ShopContract.ShopModel shopModel;
    ShopContract.ShopView shopView;
    private SoftReference<ShopContract.ShopView> softReference;

    @Override
    public void attachView(ShopContract.ShopView shopView) {
        this.shopView = shopView;
        softReference = new SoftReference<>(shopView);
        shopModel = new ShopModelImpl();
    }

    @Override
    public void detachView(ShopContract.ShopView shopView) {
        softReference.clear();
    }

    @Override
    public void requsetShopData() {
        shopModel.containShopData(new ShopContract.ShopModel.CallBack() {
            @Override
            public void reponseShopData(String message) {
                shopView.showShopData(message);
            }
        });
    }
}

创建Bean类

private String msg;
private String code;
private List<DataBean> 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 List<DataBean> getData() {
    return data;
}

public void setData(List<DataBean> data) {
    this.data = data;
}

public static class DataBean {
    /**
     * list : [{"bargainPrice":99,"createtime":"2017-10-14T21:38:26","detailUrl":"https://item.m.jd.com/product/4345173.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t6037/35/2944615848/95178/6cd6cff0/594a3a10Na4ec7f39.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6607/258/1025744923/75738/da120a2d/594a3a12Ne3e6bc56.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6370/292/1057025420/64655/f87644e3/594a3a12N5b900606.jpg!q70.jpg","num":72,"pid":45,"price":2999,"pscid":39,"selected":0,"sellerid":1,"subhead":"高清双摄，就是清晰！2000+1600万高清摄像头，6GB大内存+高通骁龙835处理器，性能怪兽！","title":"一加手机5 (A5000) 6GB+64GB 月岩灰 全网通 双卡双待 移动联通电信4G手机"},{"bargainPrice":11800,"createtime":"2017-10-10T17:33:37","detailUrl":"https://item.m.jd.com/product/4338107.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t6700/155/2098998076/156185/6cf95035/595dd5a5Nc3a7dab5.jpg!q70.jpg","num":25,"pid":57,"price":5199,"pscid":40,"selected":0,"sellerid":1,"subhead":"【i5 MX150 2G显存】全高清窄边框 8G内存 256固态硬盘 支持指纹识别 预装WIN10系统","title":"小米(MI)Air 13.3英寸全金属轻薄笔记本(i5-7200U 8G 256G PCle SSD MX150 2G独显 FHD 指纹识别 Win10）银\r\n"},{"bargainPrice":11800,"createtime":"2017-10-14T21:38:26","detailUrl":"https://mitem.jd.hk/ware/view.action?wareId=1988853309&cachekey=1acb07a701ece8d2434a6ae7fa6870a1","images":"https://m.360buyimg.com/n0/jfs/t6130/97/1370670410/180682/1109582a/593276b1Nd81fe723.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5698/110/2617517836/202970/c9388feb/593276b7Nbd94ef1f.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5698/110/2617517836/202970/c9388feb/593276b7Nbd94ef1f.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5815/178/2614671118/51656/7f52d137/593276c7N107b725a.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5878/60/2557817477/30873/4502b606/593276caN5a7d6357.jpg!q70.jpg","num":3,"pid":80,"price":777,"pscid":40,"selected":0,"sellerid":1,"subhead":"购买电脑办公部分商品满1元返火车票5元优惠券（返完即止）","title":"全球购 新款Apple MacBook Pro 苹果笔记本电脑 银色VP2新13英寸Bar i5/8G/256G"},{"bargainPrice":22.9,"createtime":"2017-10-14T21:48:08","detailUrl":"https://item.m.jd.com/product/2542855.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t1930/284/2865629620/390243/e3ade9c4/56f0a08fNbd3a1235.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t2137/336/2802996626/155915/e5e90d7a/56f0a09cN33e01bd0.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t1882/31/2772215910/389956/c8dbf370/56f0a0a2Na0c86ea6.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t2620/166/2703833710/312660/531aa913/57709035N33857877.jpg!q70.jpg","num":29,"pid":24,"price":288,"pscid":2,"selected":0,"sellerid":1,"subhead":"三只松鼠零食特惠，专区满99减50，满199减100，火速抢购》","title":"三只松鼠 坚果炒货 零食奶油味 碧根果225g/袋"}]
     * sellerName : 商家1
     * sellerid : 1
     */

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

    public boolean getBusinessChecked() {
        return businessChecked;
    }

    public void setBusinessChecked(boolean businessChecked) {
        this.businessChecked = businessChecked;
    }

    public String getSellerName() {
        return sellerName;
    }

    public void setSellerName(String sellerName) {
        this.sellerName = sellerName;
    }

    public String getSellerid() {
        return sellerid;
    }

    public void setSellerid(String sellerid) {
        this.sellerid = sellerid;
    }

    public List<ListBean> getList() {
        return list;
    }

    public void setList(List<ListBean> list) {
        this.list = list;
    }

    public static class ListBean {
        /**
         * bargainPrice : 99.0
         * createtime : 2017-10-14T21:38:26
         * detailUrl : https://item.m.jd.com/product/4345173.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends
         * images : https://m.360buyimg.com/n0/jfs/t6037/35/2944615848/95178/6cd6cff0/594a3a10Na4ec7f39.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6607/258/1025744923/75738/da120a2d/594a3a12Ne3e6bc56.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6370/292/1057025420/64655/f87644e3/594a3a12N5b900606.jpg!q70.jpg
         * num : 72
         * pid : 45
         * price : 2999.0
         * pscid : 39
         * selected : 0
         * sellerid : 1
         * subhead : 高清双摄，就是清晰！2000+1600万高清摄像头，6GB大内存+高通骁龙835处理器，性能怪兽！
         * title : 一加手机5 (A5000) 6GB+64GB 月岩灰 全网通 双卡双待 移动联通电信4G手机
         */

        private double bargainPrice;
        private String createtime;
        private String detailUrl;
        private String images;
        private int num;
        private int pid;
        private double price;
        private int pscid;
        private int selected;
        private int sellerid;
        private String subhead;
        private String title;
        private boolean goodsChecked;
        private int defalutNumber = 1;

        public int getDefalutNumber() {
            return defalutNumber;
        }

        public void setDefalutNumber(int defalutNumber) {
            this.defalutNumber = defalutNumber;
        }


        public boolean getGoodsChecked() {
            return goodsChecked;
        }

        public void setGoodsChecked(boolean goodsChecked) {
            this.goodsChecked = goodsChecked;
        }

        public double getBargainPrice() {
            return bargainPrice;
        }

        public void setBargainPrice(double bargainPrice) {
            this.bargainPrice = bargainPrice;
        }

        public String getCreatetime() {
            return createtime;
        }

        public void setCreatetime(String createtime) {
            this.createtime = createtime;
        }

        public String getDetailUrl() {
            return detailUrl;
        }

        public void setDetailUrl(String detailUrl) {
            this.detailUrl = detailUrl;
        }

        public String getImages() {
            return images;
        }

        public void setImages(String images) {
            this.images = images;
        }

        public int getNum() {
            return num;
        }

        public void setNum(int num) {
            this.num = num;
        }

        public int getPid() {
            return pid;
        }

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

        public double getPrice() {
            return price;
        }

        public void setPrice(double price) {
            this.price = price;
        }

        public int getPscid() {
            return pscid;
        }

        public void setPscid(int pscid) {
            this.pscid = pscid;
        }

        public int getSelected() {
            return selected;
        }

        public void setSelected(int selected) {
            this.selected = selected;
        }

        public int getSellerid() {
            return sellerid;
        }

        public void setSellerid(int sellerid) {
            this.sellerid = sellerid;
        }

        public String getSubhead() {
            return subhead;
        }

        public void setSubhead(String subhead) {
            this.subhead = subhead;
        }

        public String getTitle() {
            return title;
        }

        public void setTitle(String title) {
            this.title = title;
        }
    }
}

接口是这样的:

public static final String Shop = "https://www.zhaoapi.cn/product/getCarts?uid=71";

adapter适配器

public class BusinseeAdapter extends BaseQuickAdapter<Shop.DataBean,BaseViewHolder> {

    private RecyclerView recyclerView1;

    OnBussinessItemClickListener onBussinessItemClickListener;

    public void setOnBussinessItemClickListener(OnBussinessItemClickListener onBussinessItemClickListener){
        this.onBussinessItemClickListener = onBussinessItemClickListener;
    }

    public interface OnBussinessItemClickListener{
        public void onCallBack();
    }

    public BusinseeAdapter(int layoutResId, @Nullable List<Shop.DataBean> data) {
        super(layoutResId, data);
    }

    @Override
    protected void convert(BaseViewHolder helper, final Shop.DataBean item) {
        //找到商家的控件
        helper.setText(R.id.business_name,item.getSellerName());

        //避免焦点抢占
        final CheckBox checkBox = helper.getView(R.id.c_business);
        checkBox.setOnCheckedChangeListener(null);
        //条目是否选中状态
        checkBox.setChecked(item.getBusinessChecked());


        recyclerView1 = helper.getView(R.id.recyclerView1);
        //子商品条目数据
       List<Shop.DataBean.ListBean> list = item.getList();
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(mContext,LinearLayoutManager.VERTICAL,false);

        final GoodsAdapter goodsAdapter = new GoodsAdapter(R.layout.frag_goods, list);
        recyclerView1.setLayoutManager(linearLayoutManager);
        recyclerView1.setAdapter(goodsAdapter);



        goodsAdapter.setOnGoodsItemClickListener(new GoodsAdapter.onGoodsItemClickListener() {
            @Override
            public void onCallBack() {
                boolean result = true;
                for (int i =0;i<item.getList().size();i++){
                    result = result&item.getList().get(i).getGoodsChecked();
                }
                checkBox.setChecked(result);
                goodsAdapter.notifyDataSetChanged();
                onBussinessItemClickListener.onCallBack();
            }
        });

        checkBox.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                for (int i=0;i<item.getList().size();i++){
                    item.getList().get(i).setGoodsChecked(checkBox.isChecked());
                }
                item.setBusinessChecked(checkBox.isChecked());
                notifyDataSetChanged();
                onBussinessItemClickListener.onCallBack();
            }
        });

    }
}

public class GoodsAdapter extends BaseQuickAdapter<Shop.DataBean.ListBean,BaseViewHolder> {

    //设置接口回调 点击事件
   onGoodsItemClickListener onGoodsItemClickListener;

   public void setOnGoodsItemClickListener(onGoodsItemClickListener onGoodsItemClickListener){
       this.onGoodsItemClickListener = onGoodsItemClickListener;
   }

   public interface onGoodsItemClickListener{
       public void onCallBack();
   }

    public GoodsAdapter(int layoutResId, @Nullable List<Shop.DataBean.ListBean> data) {
        super(layoutResId, data);
    }

    @Override
    protected void convert(BaseViewHolder helper, final Shop.DataBean.ListBean item) {
        //找到控件
        helper.setText(R.id.goodsTitle,item.getTitle());
        helper.setText(R.id.goodsPrice,item.getPrice()+"");
        ImageView imageView = helper.getView(R.id.image);
        //图片切割
        String imagesString = item.getImages();
        String[] imageStr = imagesString.split("\\|");
        Glide.with(mContext).load(imageStr[0]).into(imageView);

        //找到商品的输入框控件
        CheckBox goods = helper.getView(R.id.goods);
        goods.setOnCheckedChangeListener(null);
        goods.setChecked(item.getGoodsChecked());

        goods.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                item.setGoodsChecked(isChecked);
                onGoodsItemClickListener.onCallBack();
            }
        });
        CaculatorView caculatorView = helper.getView(R.id.cv_caculatorView);
        caculatorView.setOnCaculatorListener(new CaculatorView.onCaculatorListener() {
            @Override
            public void dis(int number) {
                item.setDefalutNumber(number);
                onGoodsItemClickListener.onCallBack();
            }

            @Override
            public void adds(int number) {
                item.setDefalutNumber(number);
                onGoodsItemClickListener.onCallBack();
            }
        });
    }
}

XML文件

主页面的

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

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        >

     <android.support.v7.widget.RecyclerView
         android:id="@+id/recyclerView_Zong"
         android:layout_width="match_parent"
         android:layout_height="wrap_content">

     </android.support.v7.widget.RecyclerView>

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <CheckBox
            android:id="@+id/all"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="全选"
            />

        <TextView
            android:id="@+id/price"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="总价是:"
            android:layout_marginLeft="20dp"
            />

        <Button
            android:id="@+id/jie"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="结算"
            android:background="#f0f"
            android:layout_marginLeft="160dp"
            />
    </LinearLayout>

</LinearLayout>

商家

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

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

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

        <TextView
            android:id="@+id/business_name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="店家"
            />



    </LinearLayout>

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView_dian"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

    </android.support.v7.widget.RecyclerView>

</LinearLayout>

商品

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:fresco="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="5dp"
    android:orientation="horizontal"
    >

        <RelativeLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:layout_margin="10dp"
            >

            <CheckBox
                android:id="@+id/goods"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                />
            <ImageView
                android:id="@+id/image"
                android:layout_width="80dp"
                android:layout_height="80dp"
                android:layout_toRightOf="@+id/goods"
                android:src="@mipmap/ic_launcher_round"
                />

            <LinearLayout
                android:layout_toRightOf="@+id/image"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerHorizontal="true"
                android:orientation="vertical"
                >
                <TextView
                    android:id="@+id/goodsTitle"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:ellipsize="end"
                    android:hint="商品名称"
                    android:maxEms="20"
                    android:paddingLeft="5dp"
                    android:textStyle="bold" />

                <TextView
                    android:gravity="center"
                    android:id="@+id/goodsPrice"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_below="@id/goodsTitle"
                    android:layout_marginTop="@dimen/dp_10"
                    android:hint="商品价格" />

                <com.example.zb.ui.wight.Caculator
                    android:id="@+id/cv_caculatorView"
                    android:layout_width="match_parent"
                    android:layout_height="30dp"
                    android:gravity="center"
                    >

                </com.example.zb.ui.wight.Caculator>

            </LinearLayout>

        </RelativeLayout>


</LinearLayout>

加减器

public class Caculator extends LinearLayout implements View.OnClickListener {

    private Button jia;
    private TextView number1;
    private Button jian;

    public Caculator(Context context) {
        super(context);
    }

    public Caculator(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public Caculator(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);

        View view = LayoutInflater.from(context).inflate(R.layout.caculator,this);
        jia = view.findViewById(R.id.jia);
        number1 =view.findViewById(R.id.number);
        jian = view.findViewById(R.id.jian);

        jia.setOnClickListener(this);
        jian.setOnClickListener(this);
    }


    @Override
    public void onClick(View v) {
        String numberString = number1.getText().toString();
        int number = Integer.parseInt(numberString);

        switch (v.getId()){
            case R.id.jian:
                number = number-1;
                if (number<0){
                    number=0;
                    number1.setText(String.valueOf(number));
                }
                number1.setText(String.valueOf(number));
                onCaculatorListener.dis(number);
                break;
            case R.id.jia:
                number = number+1;
                number1.setText(String.valueOf(number));
                onCaculatorListener.adds(number);
                break;
        }
    }

    onCaculatorListener onCaculatorListener;

    public interface onCaculatorListener{
        public void dis(int number);
        public void adds(int number);

    }

    public void setOnCaculatorListener(Caculator.onCaculatorListener onCaculatorListener) {
        this.onCaculatorListener = onCaculatorListener;
    }
}

布局

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

    <Button
        android:id="@+id/jian"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="-"
        android:background="#fff"
        android:textSize="30sp"
        />
    <TextView
        android:id="@+id/number"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="30sp"

        android:text="1"
        />
    <Button
        android:id="@+id/jia"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="+"
        android:background="#fff"
        android:textSize="30sp"
        />
</LinearLayout>