RecyclerView嵌套实现购物车
2024-04-13 02:54:24
1 导库
implementation 'com.google.code.gson:gson:2.8.5'
implementation 'com.squareup.okhttp3:okhttp:3.12.0'
implementation 'com.github.bumptech.glide:glide:4.8.0'
implementation 'com.android.support:recyclerview-v7:28.0.0'
implementation 'com.amap.api:location:4.4.0'
implementation 'com.jakewharton:butterknife:8.8.1'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'2 加权限
<uses-permission android:name="android.permission.INTERNET"/>--------初始化 在AndroidManifest.xml声明
package com.example.app;import android.app.Application;
import android.content.Context;public class MyApp extends Application {private static Context context;@Overridepublic void onCreate() {super.onCreate();context = this;}public static Context getContext() {return context;}
}
3 对象类（bean包）
-----------泛型
package com.example.bean;public class Result<T> {/*** msg : 查询成功* code : 0* data : []*/private String msg;private String code;private T 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 T getData() {return data;}public void setData(T data) {this.data = data;}
}
----------------用到的对象类
package com.example.bean;import java.util.List;public class GoodsBean {/*** list : [{"bargainPrice":111.99,"createtime":"2017-10-14T21:48:08","detailUrl":"https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg","num":8,"pid":11,"price":8989,"pscid":1,"selected":0,"sellerid":4,"subhead":"每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下","title":"北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g"}]* sellerName : 商家4* sellerid : 4*/private String sellerName;private String sellerid;private List<ListBean> list;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 : 111.99* createtime : 2017-10-14T21:48:08* detailUrl : https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends* images : https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg* num : 8* pid : 11* price : 8989* pscid : 1* selected : 0* sellerid : 4* subhead : 每个中秋都不能简单，无论身在何处，你总需要一块饼让生活更圆满，京东月饼让爱更圆满京东自营，闪电配送，更多惊喜，快用手指戳一下* title : 北京稻香村 稻香村中秋节月饼 老北京月饼礼盒655g*/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 checked;public boolean isChecked() {return checked;}public void setChecked(boolean checked) {this.checked = checked;}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;}}
}
4 MVP 用到的类
----------------工具类---okhttp读取网络数据
package com.example.utils;import java.io.IOException;import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;public class HttpUtils {private static HttpUtils httpUtils = new HttpUtils();private HttpUtils() {}public static HttpUtils getHttpUtils() {synchronized (httpUtils){if (httpUtils == null){httpUtils = new HttpUtils();}}return httpUtils;}public String get(String url){OkHttpClient okHttpClient = new OkHttpClient.Builder().addInterceptor(new LoggingInterceptor())//日志拦截器.connectTimeout(10, TimeUnit.SECONDS)//连接超时.readTimeout(10,TimeUnit.SECONDS)//读取超时.writeTimeout(10,TimeUnit.SECONDS)//写入超时.build();Request request = new Request.Builder().url(url).get().build();try {Response response = okHttpClient.newCall(request).execute();return response.body().string();} catch (IOException e) {e.printStackTrace();}return null;}
}
------日志拦截器
package com.example.utils;import android.util.Log;import java.io.IOException;import okhttp3.Interceptor;
import okhttp3.Request;
import okhttp3.Response;
import okhttp3.ResponseBody;/*** @author dingtao* @date 2018/12/19 5:12 PM** 打印OKHttp请求日志*/
public class LoggingInterceptor implements Interceptor {@Overridepublic Response intercept(Chain chain) throws IOException {//这个chain里面包含了request和response，所以你要什么都可以从这里拿Request request = chain.request();long t1 = System.nanoTime();//请求发起的时间Log.i("dt",String.format("发送请求 %s on %s%n%s",request.url(), chain.connection(), request.headers()));Response response = chain.proceed(request);long t2 = System.nanoTime();//收到响应的时间//这里不能直接使用response.body().string()的方式输出日志//因为response.body().string()之后，response中的流会被关闭，程序会报错，我们需要创建出一//个新的response给应用层处理ResponseBody responseBody = response.peekBody(1024 * 1024);Log.i("dt",String.format("接收响应: [%s] %n返回json:【%s】 %.1fms%n%s",response.request().url(),responseBody.string(),(t2 - t1) / 1e6d,response.headers()));return response;}
}
--------------------接口类
package com.example.core;import com.example.bean.Result;public interface BaseCore<T> {void loadSuccess(T data);void loadError(Result result);
}
商品接口
package com.example.core;public interface GoodsCallback {void addAction();void reduceGood();void itmeChecked();
}
---------------MVP----p层
package com.example.presenter;import android.os.AsyncTask;import com.example.bean.Result;
import com.example.core.BaseCore;public abstract class BasePresenter {private BaseCore baseCore;public BasePresenter(BaseCore baseCore) {this.baseCore = baseCore;}public void unBaseCore(){baseCore = null;}public void readData(Object... strings){new MyTask().execute(strings);}class MyTask extends AsyncTask<Object,Void,Result>{@Overrideprotected Result doInBackground(Object... strings) {Result result = onModel(strings);return result;}@Overrideprotected void onPostExecute(Result result) {super.onPostExecute(result);if (result.getCode().equals("0")){baseCore.loadSuccess(result.getData());}else {baseCore.loadError(result);}}}public abstract Result onModel(Object... strings);
}
-----------具体使用继承
package com.example.presenter;import com.example.bean.Result;
import com.example.core.BaseCore;
import com.example.model.BaseModel;public class GoodsPresenter extends BasePresenter {public GoodsPresenter(BaseCore baseCore) {super(baseCore);}@Overridepublic Result onModel(Object... strings) {String uid= (String) strings[0];Result result = BaseModel.LoadData(uid);return result;}}
---------------MVP----------M层
package com.example.model;import android.util.Log;import com.example.bean.GoodsBean;
import com.example.bean.Result;
import com.example.utils.HttpUtils;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;import java.lang.reflect.Type;
import java.util.List;public class BaseModel {private static final String TAG = "BaseModel========";public static Result LoadData(String uid) {String url = "http://www.zhaoapi.cn/product/getCarts?uid="+uid;HttpUtils httpUtils = HttpUtils.getHttpUtils();String json = httpUtils.get(url);Log.i(TAG, "LoadData: "+json);Gson gson = new Gson();Type type = new TypeToken<Result<List<GoodsBean>>>() {}.getType();Result result = gson.fromJson(json, type);return result;}
}
------------MVP--------------V层（MainActivity）
package com.example.my_shopp;import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.TextView;
import android.widget.Toast;import com.example.adapter.NormalAdapter;
import com.example.bean.GoodsBean;
import com.example.bean.Result;
import com.example.core.BaseCore;
import com.example.presenter.GoodsPresenter;import java.util.List;import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick;public class MainActivity extends AppCompatActivity implements BaseCore ,NormalAdapter.FoodActionCheck {@BindView(R.id.recycler)RecyclerView recycler;@BindView(R.id.checkbox)CheckBox checkbox;@BindView(R.id.text_sum)TextView textSum;@BindView(R.id.but_sum)Button butSum;private GoodsPresenter presenter;private double sum;private int num;private List<GoodsBean> list;private NormalAdapter adapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);ButterKnife.bind(this);presenter = new GoodsPresenter(this);presenter.readData(71+"");LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);recycler.setLayoutManager(linearLayoutManager);}@OnClick(R.id.but_sum)public void onViewClicked() {}@Overridepublic void loadSuccess(Object data) {list = (List<GoodsBean>) data;adapter = new NormalAdapter(this);adapter.setmDatas(list);adapter.setContext(this);recycler.setAdapter(adapter);checkbox.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {boolean b=checkbox.isChecked();for (int i = 0; i < list.size(); i++) {for (int j = 0; j < list.get(i).getList().size(); j++) {list.get(i).getList().get(j).setChecked(b);}}if (b){getSum();}else {textSum.setText("¥0.0");butSum.setText("去结算（0)");}adapter.notifyDataSetChanged();}});}@Overridepublic void loadError(Result result) {Toast.makeText(this, result.getMsg(), Toast.LENGTH_SHORT).show();}private void getSum() {sum=0;num=0;for (int i = 0; i < list.size(); i++) {for (int j = 0; j < list.get(i).getList().size(); j++) {if ( list.get(i).getList().get(j).isChecked()){Log.i("++++++++++++", "getSum: "+list.get(i).getList().get(j).getNum()*list.get(i).getList().get(j).getPrice());Log.i("++++++++++++", "getSum: "+list.get(i).getList().get(j).getNum());sum+= list.get(i).getList().get(j).getNum()*list.get(i).getList().get(j).getPrice();num+= list.get(i).getList().get(j).getNum();}}}textSum.setText("¥"+sum+"");butSum.setText("去结算（"+num+")");}@Overridepublic void checked() {getSum();int pd=0;for (int i = 0; i < list.size(); i++) {for (int j = 0; j < list.get(i).getList().size(); j++) {if ( list.get(i).getList().get(j).isChecked()){pd++;}}}if (pd==16){checkbox.setChecked(true);}else{checkbox.setChecked(false);}}@Overrideprotected void onDestroy() {super.onDestroy();presenter.unBaseCore();}
}
5RecyclerView适配器
---------------商铺
package com.example.adapter;import android.content.Context;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;import com.bumptech.glide.Glide;
import com.example.bean.GoodsBean;
import com.example.core.GoodsCallback;
import com.example.my_shopp.R;import java.util.List;// ① 创建Adapter
public class NormalAdapter extends RecyclerView.Adapter<NormalAdapter.VH> implements GoodsCallback {private final FoodActionCheck check;@Overridepublic void addAction() {check.checked();}@Overridepublic void reduceGood() {check.checked();}@Overridepublic void itmeChecked() {check.checked();}//② 创建ViewHolderpublic static class VH extends RecyclerView.ViewHolder{public final TextView title;public final RecyclerView recycler_itme;public VH(View v) {super(v);title = v.findViewById(R.id.text_s_name);recycler_itme = v.findViewById(R.id.recycler_itme);}}private List<GoodsBean> mDatas;private Context context;public Context getContext() {return context;}public void setContext(Context context) {this.context = context;}public List<GoodsBean> getmDatas() {return mDatas;}public void setmDatas(List<GoodsBean> mDatas) {this.mDatas = mDatas;}//③ 在Adapter中实现3个方法@Overridepublic void onBindViewHolder(VH holder, int position) {holder.title.setText(mDatas.get(position).getSellerName());LinearLayoutManager linearLayoutManager = new LinearLayoutManager(context);linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);holder.recycler_itme.setLayoutManager(linearLayoutManager);NewAdapter adapter = new NewAdapter(this);adapter.setContext(context);adapter.setmDatas(mDatas.get(position).getList());holder.recycler_itme.setAdapter(adapter);holder.itemView.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {//item 点击事件}});}@Overridepublic int getItemCount() {return mDatas.size();}@Overridepublic VH onCreateViewHolder(ViewGroup parent, int viewType) {//LayoutInflater.from指定写法View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.sellername_layout, parent, false);return new VH(v);}public interface FoodActionCheck{void checked();}public NormalAdapter(FoodActionCheck check) {this.check = check;}
}
----------配套布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:orientation="vertical"android:layout_height="wrap_content"><TextViewandroid:id="@+id/text_s_name"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textSize="30sp"android:text="店铺名"/><android.support.v7.widget.RecyclerViewandroid:id="@+id/recycler_itme"android:layout_width="match_parent"android:layout_height="match_parent"></android.support.v7.widget.RecyclerView>
</LinearLayout>
---------------商品适配器
package com.example.adapter;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.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;import com.bumptech.glide.Glide;
import com.example.bean.GoodsBean;
import com.example.core.GoodsCallback;
import com.example.layout.MyLayout;
import com.example.my_shopp.R;import java.util.List;// ① 创建Adapter
public class NewAdapter extends RecyclerView.Adapter<NewAdapter.VH>{private final GoodsCallback goodsCallback;//② 创建ViewHolderpublic static class VH extends RecyclerView.ViewHolder{public final MyLayout my_layout;public VH(View v) {super(v);my_layout = v.findViewById(R.id.my_layout);}}private List<GoodsBean.ListBean> mDatas;private Context context;public Context getContext() {return context;}public void setContext(Context context) {this.context = context;}public List<GoodsBean.ListBean> getmDatas() {return mDatas;}public void setmDatas(List<GoodsBean.ListBean> mDatas) {this.mDatas = mDatas;}//③ 在Adapter中实现3个方法@Overridepublic void onBindViewHolder(VH holder, final int position) {TextView text_title= holder.my_layout.findViewById(R.id.text_title);TextView text_price= holder.my_layout.findViewById(R.id.text_price);ImageView image_itme= holder.my_layout.findViewById(R.id.image_itme);final CheckBox check_itme= holder.my_layout.findViewById(R.id.check_itme);Button but_jian = holder.my_layout.findViewById(R.id.but_jian);Button but_jia= holder.my_layout.findViewById(R.id.but_jia);EditText edit_count= holder.my_layout.findViewById(R.id.edit_count);edit_count.setText(String.valueOf(mDatas.get(position).getNum()));check_itme.setChecked(mDatas.get(position).isChecked());text_title.setText(mDatas.get(position).getTitle());text_price.setText("¥"+mDatas.get(position).getPrice());String replace = mDatas.get(position).getImages().replace("https", "http");//Log.e("===================",replace+"");//分割字符串String[] split = replace.split("!");//Log.e("===================++",split[0]);Glide.with(context).load(split[0]).into(image_itme);holder.itemView.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {//item 点击事件}});but_jia.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {mDatas.get(position).setNum(mDatas.get(position).getNum()+1);if (check_itme.isChecked()){goodsCallback.addAction();}notifyDataSetChanged();}});but_jian.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {if ( 0 == mDatas.get(position).getNum()) return;mDatas.get(position).setNum(mDatas.get(position).getNum()-1);if (check_itme.isChecked()){goodsCallback.reduceGood();}notifyDataSetChanged();}});check_itme.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {mDatas.get(position).setChecked(check_itme.isChecked());goodsCallback.itmeChecked();}});}@Overridepublic int getItemCount() {return mDatas.size();}@Overridepublic VH onCreateViewHolder(ViewGroup parent, int viewType) {//LayoutInflater.from指定写法View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.i_layout, parent, false);return new VH(v);}public NewAdapter(GoodsCallback goodsCallback) {this.goodsCallback= goodsCallback;}
}
----------配套布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:orientation="vertical"android:layout_height="wrap_content"><com.example.layout.MyLayoutandroid:id="@+id/my_layout"android:layout_width="match_parent"android:layout_height="match_parent"></com.example.layout.MyLayout>
</LinearLayout>
6自定义商品条目布局
package com.example.layout;import android.content.Context;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.view.View;
import android.widget.LinearLayout;
import com.example.my_shopping.R;public class MyLayout extends LinearLayout{public MyLayout(Context context) {super(context);initView();}public MyLayout(Context context, @Nullable AttributeSet attrs) {super(context, attrs);initView();}public MyLayout(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);initView();}private void initView(){View view = View.inflate(getContext(), R.layout.itme_layout,this);}}----------配合布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="wrap_content"android:gravity="center_vertical"android:layout_height="150dp"><CheckBoxandroid:id="@+id/check_itme"android:layout_width="wrap_content"android:layout_height="wrap_content" /><ImageViewandroid:id="@+id/image_itme"android:layout_width="100dp"android:layout_height="100dp"android:adjustViewBounds="true"android:src="@mipmap/ic_launcher"/><RelativeLayoutandroid:layout_width="0dp"android:layout_weight="3"android:layout_height="80dp"><TextViewandroid:id="@+id/text_title"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textStyle="bold"android:text="标题"/><TextViewandroid:id="@+id/text_price"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textStyle="bold"android:textColor="#f00"android:text="¥124.0"android:layout_alignParentBottom="true"/><LinearLayoutandroid:layout_width="wrap_content"android:layout_alignParentBottom="true"android:layout_alignParentRight="true"android:layout_height="wrap_content"><Buttonandroid:id="@+id/but_jian"android:layout_width="40dp"android:layout_height="wrap_content"android:text="—"/><EditTextandroid:id="@+id/edit_count"android:layout_width="wrap_content"android:gravity="center"android:layout_height="wrap_content"android:textColor="#f00"android:inputType="number"android:text="0" /><Buttonandroid:id="@+id/but_jia"android:layout_width="40dp"android:layout_height="wrap_content"android:text="+"/></LinearLayout></RelativeLayout></LinearLayout>
7 主界面展示布局
<?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=".MainActivity"><android.support.v7.widget.RecyclerViewandroid:id="@+id/recycler"android:layout_width="match_parent"android:layout_height="0dp"android:layout_weight="1"></android.support.v7.widget.RecyclerView><LinearLayoutandroid:layout_width="match_parent"android:gravity="center_vertical"android:layout_height="wrap_content"><CheckBoxandroid:id="@+id/checkbox"android:layout_width="0dp"android:layout_weight="1"android:layout_height="wrap_content"android:text="全选"/><TextViewandroid:id="@+id/text_sum"android:layout_width="0dp"android:layout_weight="2"android:layout_height="wrap_content"android:textStyle="bold"android:textSize="20sp"android:text="合计：¥0.0"/><Buttonandroid:id="@+id/but_sum"android:layout_width="0dp"android:layout_weight="2"android:layout_height="wrap_content"android:textColor="#fff"android:background="#f00"android:textSize="20sp"android:text="去结算（0）"/></LinearLayout>
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