mvp二级购物车的实现

  

 

这个项目需要的东西

这是MainActivity下的

import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.view.View;import android.widget.CheckBox;import android.widget.TextView;import android.widget.Toast;import mygwc.bwei.com.mygwc.R;import mygwc.bwei.com.mygwc.adapter.MyAdapter;import mygwc.bwei.com.mygwc.bean.GwcBean;import mygwc.bwei.com.mygwc.presenter.MyPresenter;import mygwc.bwei.com.mygwc.view.IView;public class MainActivity extends AppCompatActivity implements IView {   MyPresenter Presenter=new MyPresenter(this,this);    private RecyclerView rv;    private CheckBox allcheck;    private TextView allnum;    private TextView allprice;    MyAdapter adapter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        rv = (RecyclerView) findViewById(R.id.rv);        allcheck = (CheckBox) findViewById(R.id.allcheck);        allnum = (TextView) findViewById(R.id.allnum);        allprice = (TextView) findViewById(R.id.allprice);        Presenter.getnetdata();        LinearLayoutManager manager=new LinearLayoutManager(this);        rv.setLayoutManager(manager);    }    @Override    public void showdata(GwcBean bean) {        adapter=new MyAdapter(MainActivity.this,bean);        rv.setAdapter(adapter);        adapter.blgwc();        allcheck.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                adapter.selectAll(allcheck.isChecked());            }        });        adapter.setListener(new MyAdapter.UpdateUiListener() {            @Override            public void setTotal(String total, String num, boolean allCheck) {                allcheck.setChecked(allCheck);                allnum.setText("共"+num+"件商品");                allprice.setText("共"+total+"￥");            }        });        adapter.setOnItemClickListener(new MyAdapter.OnItemClickListener() {            @Override            public void onItemClick(View view, int position) {                Toast.makeText(MainActivity.this,"您正在点击的是第"+position+"条目",Toast.LENGTH_SHORT).show();            }        });    }}

配置类adapter

import android.content.Context;import android.support.v7.widget.RecyclerView;import android.view.View;import android.view.ViewGroup;import android.widget.Button;import android.widget.CheckBox;import android.widget.ImageView;import android.widget.TextView;import com.bumptech.glide.Glide;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import mygwc.bwei.com.mygwc.R;import mygwc.bwei.com.mygwc.bean.GwcBean;import mygwc.bwei.com.mygwc.myview.MyPuls;/** * Created by DELL on 2017/11/23. */public class MyAdapter extends RecyclerView.Adapter<MyAdapter.myholder> implements View.OnClickListener{    Context context;    GwcBean bean;    List<GwcBean.DataBean.ListBean> list;    Map<String, String> map = new HashMap<>();    public MyAdapter(Context context, GwcBean bean) {        this.context = context;        this.bean = bean;    }    public void blgwc() {        if (this.list == null) {            this.list = new ArrayList<>();        }        // 遍历商家        for (GwcBean.DataBean shop : bean.getData()) {            map.put(shop.getSellerid(), shop.getSellerName());            // 遍历商品            for (int i = 0; i < shop.getList().size(); i++) {                this.list.add(shop.getList().get(i));            }        }        setFirst(this.list);        notifyDataSetChanged();    }    private void setFirst(List<GwcBean.DataBean.ListBean> list) {        if (list.size() > 0) {            list.get(0).setIsFirst(1);            for (int i = 1; i < list.size(); i++) {                if (list.get(i).getSellerid() == list.get(i - 1).getSellerid()) {                    list.get(i).setIsFirst(2);                } else {                    list.get(i).setIsFirst(1);                    if (list.get(i).isItemSelected()) {                        list.get(i).setShopSelected(list.get(i).isItemSelected());                    }                }            }        }    }    @Override    public MyAdapter.myholder onCreateViewHolder(ViewGroup parent, int viewType) {        View view=View.inflate(context,R.layout.item_layout,null);        myholder myholder=new myholder(view);        view.setOnClickListener(this);        return myholder;    }    @Override    public void onBindViewHolder(final MyAdapter.myholder holder, final int position) {        holder.itemView.setTag(position);        if (list.get(position).getIsFirst() == 1){            //显示商家            holder.shopcheck.setVisibility(View.VISIBLE);            holder.shopname.setVisibility(View.VISIBLE);            holder.shopcheck.setChecked(list.get(position).isShopSelected());            // 显示商家的名称            // list.get(position).getSellerid() 取到商家的id            // map.get（）取到 商家的名称            holder.shopname.setText(map.get(String.valueOf(list.get(position).getSellerid())));        } else {            holder.shopcheck.setVisibility(View.GONE);            holder.shopname.setVisibility(View.GONE);        }        holder.itemcheck.setChecked(list.get(position).isItemSelected());        String imgs=list.get(position).getImages();        String [] data=imgs.split("\\|");        Glide.with(context).load(data[0]).into(holder.itemiv);        holder.itemname.setText(list.get(position).getTitle());        holder.itemprice.setText(list.get(position).getPrice()+"￥");        holder.plus.resetnum(list.get(position).getNum());        holder.shopcheck.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                list.get(position).setShopSelected(holder.shopcheck.isChecked());                for(int i=0;i<list.size();i++){                    if(list.get(position).getSellerid() == list.get(i).getSellerid()){                        list.get(i).setItemSelected(holder.shopcheck.isChecked());                    }                }                notifyDataSetChanged();                sum(list);            }        });        holder.itemcheck.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                list.get(position).setItemSelected(holder.itemcheck.isChecked());                for(int i=0;i<list.size();i++){                    for (int j=0;j<list.size();j++){                        if(list.get(i).getSellerid() == list.get(j).getSellerid() && !list.get(j).isItemSelected()){                            list.get(i).setShopSelected(false);                            break;                        }else {                            list.get(i).setShopSelected(true);                        }                    }                }                notifyDataSetChanged();                sum(list);                list.get(position).setItemSelected(holder.itemcheck.isChecked());                for(int i=0;i<list.size();i++){                    for (int j=0;j<list.size();j++){                        if(list.get(i).getSellerid() == list.get(j).getSellerid() && !list.get(j).isItemSelected()){                            list.get(i).setShopSelected(false);                            break;                        }else {                            list.get(i).setShopSelected(true);                        }                    }                }                notifyDataSetChanged();                sum(list);            }        });        holder.mDel.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                list.remove(position);                setFirst(list);                notifyDataSetChanged();                sum(list);            }        });            //MyPuls删了，从新打        holder.plus.lianjie(new MyPuls.getnownum() {            @Override            public void nownum(int count) {                list.get(position).setNum(count);                notifyDataSetChanged();                sum(list);            }        });    }    private void sum(List<GwcBean.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).isItemSelected()){                totalNum += list.get(i).getNum() ;                totalMoney += list.get(i).getNum() * list.get(i).getPrice();            }else {                allCheck = false;            }        }        listener.setTotal(totalMoney+"",totalNum+"",allCheck);    }    public void selectAll(boolean check){        for(int i=0;i<list.size();i++){            list.get(i).setShopSelected(check);            list.get(i).setItemSelected(check);        }        notifyDataSetChanged();        sum(list);    }    @Override    public int getItemCount() {        return list == null ? 0 : list.size();    }    public static interface OnItemClickListener {        void onItemClick(View view , int position);    }    private OnItemClickListener mOnItemClickListener = null;    @Override    public void onClick(View v) {        if (mOnItemClickListener != null) {            //注意这里使用getTag方法获取position            mOnItemClickListener.onItemClick(v,(int)v.getTag());        }    }    public void setOnItemClickListener(OnItemClickListener listener) {        this.mOnItemClickListener = listener;    }    class myholder extends RecyclerView.ViewHolder{        private CheckBox shopcheck;        private TextView shopname;        private CheckBox itemcheck;        private ImageView itemiv;        private TextView itemname;        private TextView itemprice;        private MyPuls plus;        private Button mDel;        public myholder(View itemView) {            super(itemView);            shopcheck = (CheckBox) itemView.findViewById(R.id.shop_check);            shopname = (TextView) itemView.findViewById(R.id.shop_name);            itemcheck = (CheckBox) itemView.findViewById(R.id.item_check);            itemiv = (ImageView) itemView.findViewById(R.id.item_iv);            itemname = (TextView) itemView.findViewById(R.id.item_name);            itemprice = (TextView) itemView.findViewById(R.id.item_price);            plus=itemView.findViewById(R.id.puls);            mDel = (Button) itemView.findViewById(R.id.del);        }    }    public UpdateUiListener listener;    public void setListener(UpdateUiListener listener){        this.listener = listener;    }    public interface UpdateUiListener {        public void setTotal(String total,String num,boolean allCheck);    }}
Bean类的各种属性自己创建
Model的类接口
import okhttp3.Callback;/** * Created by DELL on 2017/11/23. */public interface IModel {    public void getgwcdata(Callback callback);}
model的实现类
mport mygwc.bwei.com.mygwc.util.OkHttp3Utils;import okhttp3.Callback;/** * Created by DELL on 2017/11/23. */public class MyModel implements  IModel{    @Override    public void getgwcdata(Callback callback) {
地址数据        OkHttp3Utils.doGet("http://120.27.23.105/product/getCarts?uid=100",callback);    }}
mypuls的自定义控件
import android.content.Context;import android.support.annotation.Nullable;import android.util.AttributeSet;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.LinearLayout;import android.widget.RelativeLayout;import mygwc.bwei.com.mygwc.R;/** * Created by DELL on 2017/11/23. */public class MyPuls  extends RelativeLayout {    private Button jia;    private Button jian;    private EditText mNumPlus;    private  int num=1;    public MyPuls(Context context) {        super(context);    }    public MyPuls(Context context, @Nullable AttributeSet attrs) {        super(context, attrs);        View view=View.inflate(context, R.layout.puls_layout,null);        jia = view.findViewById(R.id.jia);        jian = view.findViewById(R.id.jian);        mNumPlus = view.findViewById(R.id.plus_num);        addView(view);        jia.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View view) {                String s=mNumPlus.getText().toString();                int i=Integer.parseInt(s);                if(i>1){                    i--;                    num=i;                    mNumPlus.setText(i+"");                    if(lisenear!=null){                        lisenear.nownum(num);                    }                }            }        });        jian.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View view) {                String s=mNumPlus.getText().toString();                int i=Integer.parseInt(s);                i++;                num=i;                mNumPlus.setText(i+"");                if(lisenear!=null){                    lisenear.nownum(num);                }            }        });    }    public MyPuls(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);    }    public getnownum lisenear;    public void resetnum(int i){        mNumPlus.setText(i+"");    }    public void lianjie(getnownum lisenear){        this.lisenear=lisenear;    }    public interface getnownum{        public void nownum(int count);    }}

presenter类的数据
import android.content.Context;import com.google.gson.Gson;import java.io.IOException;import mygwc.bwei.com.mygwc.bean.GwcBean;import mygwc.bwei.com.mygwc.model.MyModel;import mygwc.bwei.com.mygwc.util.OnUiCallback;import mygwc.bwei.com.mygwc.view.IView;import okhttp3.Call;/** * Created by DELL on 2017/11/23. */public class MyPresenter {    Context context;    IView view;    MyModel model;    public MyPresenter(Context context, IView view) {        this.context = context;        this.view = view;        model = new MyModel();    }    public void getnetdata(){        model.getgwcdata(new OnUiCallback() {            @Override            public void onFailed(Call call, IOException e) {            }            @Override            public void onSuccess(String result) {                Gson gson=new Gson();                GwcBean bean = gson.fromJson(result, GwcBean.class);                view.showdata(bean);            }        });    }}

utils类
的配置类
mvp的view类
public interface IView {    public void showdata(GwcBean bean);}

XML的mainactiv的
<?xml version="1.0" encoding="utf-8"?><RelativeLayoutxmlns: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"tools:context="mygwc.bwei.com.mygwc.activity.MainActivity"><android.support.v7.widget.RecyclerView    android:layout_above="@+id/foot"    android:id="@+id/rv"    android:layout_width="match_parent"    android:layout_height="match_parent"></android.support.v7.widget.RecyclerView><RelativeLayout    android:layout_alignParentBottom="true"    android:id="@+id/foot"    android:layout_width="match_parent"    android:layout_height="80dp">    <CheckBox        android:id="@+id/allcheck"        android:layout_width="wrap_content"        android:layout_height="wrap_content"/>    <TextView        android:id="@+id/aa"        android:layout_toRightOf="@+id/allcheck"        android:textColor="@android:color/black"        android:text="全选"        android:layout_width="wrap_content"        android:layout_height="wrap_content"/>    <LinearLayout        android:layout_marginLeft="20sp"        android:layout_toRightOf="@+id/aa"        android:id="@+id/body"        android:layout_width="150dp"        android:layout_height="match_parent"        android:orientation="vertical"        android:layout_toLeftOf="@+id/js"        >        <TextView            android:id="@+id/allnum"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="共asdsadasd件商品"            android:layout_marginBottom="10dp"            />        <TextView            android:id="@+id/allprice"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="共adasdsa钱"            />    </LinearLayout>    <Button        android:layout_alignParentRight="true"        android:id="@+id/js"        android:layout_width="wrap_content"        android:layout_height="match_parent"        android:text="结算"        android:textColor="@android:color/white"        android:background="@android:color/holo_orange_light"        /></RelativeLayout></RelativeLayout>
recycle的item条目
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"              android:layout_width="match_parent"              android:layout_height="match_parent"><LinearLayout    android:id="@+id/head"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:orientation="horizontal"    >    <CheckBox        android:id="@+id/shop_check"        android:layout_width="wrap_content"        android:layout_height="wrap_content"/>    <TextView        android:id="@+id/shop_name"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="京东自营"        /></LinearLayout>    <RelativeLayout        android:layout_below="@+id/head"        android:layout_width="match_parent"        android:layout_height="match_parent">        <CheckBox            android:id="@+id/item_check"            android:layout_width="wrap_content"            android:layout_height="wrap_content"/>        <ImageView            android:id="@+id/item_iv"            android:layout_width="80dp"            android:layout_height="80dp"            android:layout_toRightOf="@+id/item_check"            android:src="@mipmap/ic_launcher"            />        <LinearLayout            android:id="@+id/data"            android:layout_toRightOf="@+id/item_iv"            android:layout_width="200dp"            android:layout_height="wrap_content"            android:orientation="vertical"            >            <TextView                android:id="@+id/item_name"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="杜蕾斯"                />            <TextView                android:id="@+id/item_price"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="￥56.0"                />          <mygwc.bwei.com.mygwc.myview.MyPuls              android:id="@+id/puls"              android:layout_width="wrap_content"              android:layout_height="wrap_content"></mygwc.bwei.com.mygwc.myview.MyPuls>        </LinearLayout>        <Button            android:layout_toRightOf="@+id/data"            android:id="@+id/del"            android:layout_width="match_parent"            android:layout_height="80dp"            android:background="@android:color/holo_red_dark"            android:text="删除"            android:textColor="@android:color/white"            />    </RelativeLayout></RelativeLayout>

XML的自定义view
<?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"><Button    android:id="@+id/jian"    android:layout_width="50dp"    android:layout_height="50dp"    android:text="-"    />    <EditText        android:id="@+id/plus_num"        android:layout_width="60dp"        android:layout_height="50dp"        android:text="1"        android:gravity="center"        />    <Button        android:id="@+id/jia"        android:layout_width="50dp"        android:layout_height="50dp"        android:text="+"        /></LinearLayout>