一级购物车逻辑

//依赖

compile 'com.squareup.okhttp3:okhttp:3.9.0'compile 'com.google.code.gson:gson:2.8.2'compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'compile 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'compile 'com.squareup.okhttp3:logging-interceptor:3.9.0'compile 'org.greenrobot:eventbus:3.1.1'

//okhttp

package mvpframework.bwie.com.myyjgw.net;import java.util.Map;import okhttp3.Callback;import okhttp3.FormBody;import okhttp3.OkHttpClient;import okhttp3.Request;import okhttp3.logging.HttpLoggingInterceptor;public class HttpUtils {    private static HttpUtils httpUtils;    private final OkHttpClient client;    private HttpUtils(){        HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor();        loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);        client = new OkHttpClient.Builder()                .addInterceptor(loggingInterceptor)                .build();    }    public static HttpUtils getHttpUtils(){        if (httpUtils==null){            synchronized (HttpUtils.class){                if (httpUtils==null){                    httpUtils = new HttpUtils();                }            }        }        return httpUtils;    }    public void doGet(String url, Callback callback){        Request request = new Request.Builder().url(url).build();        client.newCall(request).enqueue(callback);    }    public void doPost(String url, Map<String,String> params,Callback callback){        FormBody.Builder builder = new FormBody.Builder();        for (Map.Entry<String ,String> entry:params.entrySet()){            builder.add(entry.getKey(),entry.getValue());        }        FormBody build = builder.build();        Request request = new Request.Builder().url(url).post(build).build();        client.newCall(request).enqueue(callback);    }}

//api

package mvpframework.bwie.com.myyjgw.net;public class Api {    public static final String url="http://result.eolinker.com/iYXEPGn4e9c6dafce6e5cdd23287d2bb136ee7e9194d3e9?uri=evaluation";}

//OnNetlistener

package mvpframework.bwie.com.myyjgw.net;import java.io.IOError;import java.io.IOException;public interface OnNetlistener<T> {    public void onSuccess(T t);    public void onError(IOException e);}

//model层

package mvpframework.bwie.com.myyjgw.model;import android.os.Handler;import android.os.Looper;import com.google.gson.Gson;import java.io.IOException;import mvpframework.bwie.com.myyjgw.bean.PhoneBean;import mvpframework.bwie.com.myyjgw.net.Api;import mvpframework.bwie.com.myyjgw.net.HttpUtils;import mvpframework.bwie.com.myyjgw.net.OnNetlistener;import okhttp3.Call;import okhttp3.Callback;import okhttp3.Response;public class PhoneModel implements IPhoneModel{    private Handler handler=new Handler(Looper.getMainLooper());    @Override    public void getPhone(final OnNetlistener<PhoneBean> onNetlistener){        HttpUtils.getHttpUtils().doGet(Api.url, new Callback() {            @Override            public void onFailure(Call call, final IOException e) {                handler.post(new Runnable() {                    @Override                    public void run() {                        onNetlistener.onError(e);                    }                });            }            @Override            public void onResponse(Call call, Response response) throws IOException {                String string = response.body().string();                final PhoneBean phoneBean = new Gson().fromJson(string, PhoneBean.class);                handler.post(new Runnable() {                    @Override                    public void run() {                        onNetlistener.onSuccess(phoneBean);                    }                });            }        });    }}

------------接口----------------

package mvpframework.bwie.com.myyjgw.model;import mvpframework.bwie.com.myyjgw.bean.PhoneBean;import mvpframework.bwie.com.myyjgw.net.OnNetlistener;public interface IPhoneModel {    public void getPhone(OnNetlistener<PhoneBean> onNetlistener);}

//view层

package mvpframework.bwie.com.myyjgw.view;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.LinearLayoutManager;import android.support.v7.widget.RecyclerView;import android.view.View;import android.widget.CheckBox;import android.widget.ExpandableListView;import android.widget.TextView;import org.greenrobot.eventbus.EventBus;import org.greenrobot.eventbus.Subscribe;import java.util.List;import mvpframework.bwie.com.myyjgw.Adpter.MyAdpter;import mvpframework.bwie.com.myyjgw.R;import mvpframework.bwie.com.myyjgw.bean.PhoneBean;import mvpframework.bwie.com.myyjgw.eventbusevent.MessageEvent;import mvpframework.bwie.com.myyjgw.eventbusevent.PriceAndCountEvent;import mvpframework.bwie.com.myyjgw.presenter.PhonePresenter;public class MainActivity extends AppCompatActivity implements IMainActivity{    private ExpandableListView elv;    private RecyclerView mRv;    private CheckBox mCb;    private TextView mTv_price;    private TextView mTv_num;    private MyAdpter myAdpter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        EventBus.getDefault().register(this);        PhonePresenter presenter = new PhonePresenter(this);        presenter.getPhone();        initView();        mRv.setLayoutManager(new LinearLayoutManager(this));        //请求接口        mCb.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                myAdpter.allSelect(mCb.isChecked());            }        });    }    @Override    protected void onDestroy() {        super.onDestroy();        EventBus.getDefault().unregister(this);    }     @Subscribe     public void onMessageEvent(MessageEvent event){         mCb.setChecked(event.isChecked());     }    @Subscribe    public void onMessageEvent(PriceAndCountEvent event){        mTv_num.setText("结算（"+event.getCount()+")");        mTv_price.setText(event.getPrice()+"");    }    private void initView() {        mRv = (RecyclerView) findViewById(R.id.rv);        mCb = (CheckBox) findViewById(R.id.checkbox2);        mTv_price = (TextView) findViewById(R.id.tv_price);        mTv_num = (TextView) findViewById(R.id.tv_num);    }    @Override    public void getPhone(List<PhoneBean.DataBean.DatasBean> list) {        myAdpter = new MyAdpter(list, this);        mRv.setAdapter(myAdpter);    }}

------------------接口---------------------

package mvpframework.bwie.com.myyjgw.view;import java.util.List;import mvpframework.bwie.com.myyjgw.bean.PhoneBean;public interface IMainActivity {    public void getPhone(List<PhoneBean.DataBean.DatasBean> list);}

//presenter层

package mvpframework.bwie.com.myyjgw.presenter;import java.io.IOException;import java.util.ArrayList;import java.util.List;import mvpframework.bwie.com.myyjgw.bean.PhoneBean;import mvpframework.bwie.com.myyjgw.model.IPhoneModel;import mvpframework.bwie.com.myyjgw.model.PhoneModel;import mvpframework.bwie.com.myyjgw.net.OnNetlistener;import mvpframework.bwie.com.myyjgw.view.IMainActivity;public class PhonePresenter {    private IPhoneModel iPhoneModel;    private final IMainActivity iMainActivity;    public PhonePresenter(IMainActivity iMainActivity) {        this.iMainActivity=iMainActivity;        iPhoneModel= new PhoneModel();    }    public void getPhone(){        iPhoneModel.getPhone(new OnNetlistener<PhoneBean>() {            @Override            public void onSuccess(PhoneBean phoneBean) {                ArrayList<PhoneBean.DataBean.DatasBean> list = new ArrayList<>();                List<PhoneBean.DataBean> data = phoneBean.getData();                for (int i=0;i<data.size();i++){                    List<PhoneBean.DataBean.DatasBean> datas = data.get(i).getDatas();                    list.addAll(datas);                }                  iMainActivity.getPhone(list);            }            @Override            public void onError(IOException e) {            }        });    }}

//自定义view（MyView）

package mvpframework.bwie.com.myyjgw;import android.content.Context;import android.support.annotation.Nullable;import android.util.AttributeSet;import android.view.LayoutInflater;import android.view.View;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.TextView;public class MyView extends LinearLayout{    private ImageView iv_del;    private TextView tv_num;    private ImageView iv_add;    public MyView(Context context) {        this(context,null);    }    public MyView(Context context, @Nullable AttributeSet attrs) {        super(context, attrs);        View view = LayoutInflater.from(context).inflate(R.layout.myview, this);        iv_del = findViewById(R.id.iv_del);        tv_num = findViewById(R.id.tv_num);        iv_add = findViewById(R.id.iv_add);    }    public void setAddClickListener(OnClickListener onClickListener){        iv_add.setOnClickListener(onClickListener);    }    public void setDelClickListener(OnClickListener onClickListener){        iv_del.setOnClickListener(onClickListener);    }    public void setNum(String num){        tv_num.setText(num);    }    public int getNum(){        String num = tv_num.getText().toString();        return Integer.parseInt(num);    }}

//适配器

package mvpframework.bwie.com.myyjgw.Adpter;import android.content.Context;import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.CheckBox;import android.widget.TextView;import org.greenrobot.eventbus.EventBus;import java.util.List;import mvpframework.bwie.com.myyjgw.MyView;import mvpframework.bwie.com.myyjgw.R;import mvpframework.bwie.com.myyjgw.bean.PhoneBean;import mvpframework.bwie.com.myyjgw.eventbusevent.MessageEvent;import mvpframework.bwie.com.myyjgw.eventbusevent.PriceAndCountEvent;public class MyAdpter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {    private List<PhoneBean.DataBean.DatasBean> list;    private Context context;    public MyAdpter(List<PhoneBean.DataBean.DatasBean> list, Context context) {        this.list = list;        this.context = context;    }    @Override    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view = LayoutInflater.from(context).inflate(R.layout.child, null);        MyViewHolder myViewHolder = new MyViewHolder(view);        return myViewHolder;    }    @Override    public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position) {        final PhoneBean.DataBean.DatasBean datasBean = list.get(position);        final MyViewHolder myViewHolder = (MyViewHolder) holder;        myViewHolder.cb_child.setChecked(datasBean.isChecked());        myViewHolder.tv_tel.setText(datasBean.getType_name());        myViewHolder.tv_content.setText(datasBean.getMsg());        myViewHolder.tv_time.setText(datasBean.getAdd_time());        myViewHolder.tv_pri.setText(datasBean.getPrice() + "");        myViewHolder.myView.setNum(datasBean.getNum() + "");        //checkbox点击事件        myViewHolder.cb_child.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                datasBean.setChecked(myViewHolder.cb_child.isChecked());                PriceAndCountEvent priceAndCountEvent = compe();                EventBus.getDefault().post(priceAndCountEvent);                if (myViewHolder.cb_child.isChecked()){                   if (isAllCbSelected()){                       //改变全选状态                         changeAllCbState(isAllCbSelected());                   }               }else {                   changeAllCbState(isAllCbSelected());               }               notifyDataSetChanged();            }        });        myViewHolder.myView.setAddClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                int num=myViewHolder.myView.getNum();                num++;                datasBean.setNum(num);                if (myViewHolder.cb_child.isChecked()){                    EventBus.getDefault().post(compe());                }                notifyDataSetChanged();            }        });        myViewHolder.myView.setDelClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                int num=myViewHolder.myView.getNum();                if (num==1){                    return;                }                num--;                datasBean.setNum(num);                if (myViewHolder.cb_child.isChecked()){                    EventBus.getDefault().post(compe());                }                notifyDataSetChanged();            }        });        myViewHolder.tv_del.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                list.remove(position);                EventBus.getDefault().post(compe());                notifyDataSetChanged();            }        });    }    @Override    public int getItemCount() {        return list.size();    }    class MyViewHolder extends RecyclerView.ViewHolder {        private final CheckBox cb_child;        private final TextView tv_tel;        private final TextView tv_content;        private final TextView tv_time;        private final TextView tv_pri;        private final TextView tv_del;        private final MyView myView;        public MyViewHolder(View itemView) {            super(itemView);            cb_child = itemView.findViewById(R.id.cb_child);            tv_tel = itemView.findViewById(R.id.tv_tel);            tv_content = itemView.findViewById(R.id.tv_content);            tv_time = itemView.findViewById(R.id.tv_time);            tv_pri = itemView.findViewById(R.id.tv_pri);            tv_del = itemView.findViewById(R.id.tv_del);            myView = itemView.findViewById(R.id.mv);        }    }    //价格和数量    private PriceAndCountEvent compe() {        int count = 0;        int price = 0;        for (int i = 0; i < list.size(); i++) {            PhoneBean.DataBean.DatasBean datasBean = list.get(i);            if (datasBean.isChecked()) {                price += datasBean.getPrice() * datasBean.getNum();                count += datasBean.getNum();            }        }        PriceAndCountEvent priceAndCountEvent = new PriceAndCountEvent();        priceAndCountEvent.setCount(count);        priceAndCountEvent.setPrice(price);        return priceAndCountEvent;    }    private boolean  isAllCbSelected(){        for (int i=0;i<list.size();i++){            PhoneBean.DataBean.DatasBean datasBean = list.get(i);            if (!datasBean.isChecked()){                return false;            }        }        return true;    }    private void changeAllCbState(boolean flag){        MessageEvent messageEvent = new MessageEvent();        messageEvent.setChecked(flag);        EventBus.getDefault().post(messageEvent);    }    public void allSelect(boolean flag){        for (int i=0;i<list.size();i++){            PhoneBean.DataBean.DatasBean datasBean = list.get(i);            datasBean.setChecked(flag);        }        EventBus.getDefault().post(compe());        notifyDataSetChanged();    }}

//MessageEvent

package mvpframework.bwie.com.myyjgw.eventbusevent;public class MessageEvent {    private boolean checked;    public boolean isChecked() {        return checked;    }    public void setChecked(boolean checked) {        this.checked = checked;    }}

//PriceCountEvent

package mvpframework.bwie.com.myyjgw.eventbusevent;public class PriceAndCountEvent {    private int price;    private int count;    public int getPrice() {        return price;    }    public void setPrice(int price) {        this.price = price;    }    public int getCount() {        return count;    }    public void setCount(int count) {        this.count = count;    }}

//布局activity_main.xml

<?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:orientation="vertical"    android:layout_height="match_parent"    tools:context="mvpframework.bwie.com.myyjgw.view.MainActivity">    <TextView        android:layout_width="match_parent"        android:layout_height="40dp"        android:background="#990000ff"        android:gravity="center"        android:text="购物车"        android:textColor="#ff3660"        android:textSize="25sp" />    <android.support.v7.widget.RecyclerView        android:id="@+id/rv"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_weight="1" />    <RelativeLayout        android:layout_width="match_parent"        android:layout_height="50dp"        android:layout_alignParentBottom="true"        android:background="@android:color/white"        android:gravity="center_vertical">        <CheckBox            android:id="@+id/checkbox2"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_centerVertical="true"            android:layout_marginLeft="10dp"            android:focusable="false" />        <TextView            android:layout_width="wrap_content"            android:layout_height="50dp"            android:layout_centerVertical="true"            android:layout_marginLeft="10dp"            android:layout_toRightOf="@+id/checkbox2"            android:gravity="center_vertical"            android:text="全选"            android:textSize="20sp" />        <LinearLayout            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_alignParentRight="true"            android:orientation="horizontal">            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_marginLeft="10dp"                android:text="合计 ：" />            <TextView                android:id="@+id/tv_price"                android:layout_width="wrap_content"                android:layout_height="50dp"                android:layout_marginLeft="10dp"                android:paddingRight="10dp"                android:text="0"                android:textColor="@android:color/holo_red_light" />            <TextView                android:id="@+id/tv_num"                android:layout_width="wrap_content"                android:layout_height="50dp"                android:background="@android:color/holo_red_dark"                android:gravity="center"                android:padding="10dp"                android:text="结算(0)"                android:textColor="@android:color/white" />        </LinearLayout>    </RelativeLayout></LinearLayout>

//布局child.xml

<?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:gravity="center_vertical"    android:orientation="horizontal">    <CheckBox        android:id="@+id/cb_child"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginBottom="30dp"        android:layout_marginLeft="40dp"        android:layout_marginTop="30dp"        android:focusable="false" />    <LinearLayout        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:orientation="vertical">        <TextView            android:id="@+id/tv_tel"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_marginLeft="20dp"            android:text="iphone6" />        <TextView            android:id="@+id/tv_content"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_marginLeft="20dp"            android:text="什么手机" />        <TextView            android:id="@+id/tv_time"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_marginLeft="20dp"            android:text="2016-12-10" />    </LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_weight="1"        android:orientation="vertical">        <TextView            android:id="@+id/tv_pri"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="¥3000.00" />        <mvpframework.bwie.com.myyjgw.MyView            android:id="@+id/mv"            android:layout_width="wrap_content"            android:layout_height="wrap_content"></mvpframework.bwie.com.myyjgw.MyView>    </LinearLayout>    <TextView        android:id="@+id/tv_del"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="删除" /></LinearLayout>

//myview

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:gravity="center_vertical"    android:orientation="horizontal">    <ImageView        android:id="@+id/iv_del"        android:layout_width="20dp"        android:layout_height="20dp"        android:src="@drawable/shopcart_minus_grey" />    <TextView        android:id="@+id/tv_num"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginLeft="5dp"        android:background="@drawable/shopcart_add_btn"        android:paddingBottom="2dp"        android:paddingLeft="20dp"        android:paddingRight="20dp"        android:paddingTop="2dp"        android:text="1" />    <ImageView        android:id="@+id/iv_add"        android:layout_width="20dp"        android:layout_height="20dp"        android:layout_marginLeft="5dp"        android:src="@drawable/shopcart_add_red" /></LinearLayout>

//drawable下的shopcart_add_btn.xml和三个图片

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android">    <corners android:radius="200dp"></corners>    <stroke android:color="@color/colorPrimaryDark" android:width="1dp"></stroke></shape>