安卓开发|购物车操作增删改查安卓开发|移动

MainActivity

private TextView shoppingcart_text; private RelativeLayout relativelayout; private ExpandableListView expandableListView; private CheckBox checkAll; private TextView sun; private Button shancuh; private Button goumai; private RelativeLayout relative; private GetCartPresenter getCartPresenter; private QueryBean queryBean; //定义handler @SuppressLint("HandlerLeak") Handler handler = new Handler(){ @Override public void handleMessage(Message msg) { super.handleMessage(msg); if (msg.what == 0) { countPriceBean = (CountPriceBean) msg.obj; //设置总金额 sun.setText(countPriceBean.getPriceString()); }else if(msg.what==1){ QueryBean queryBean = (QueryBean) msg.obj; Log.d("TAG","Tag+++++++++++++"+queryBean); //判断当前所有子条目是否选中来决定一组的选中状态 for (int i = 0; i < queryBean.getData().size(); i++) { if (ischilditemcheck(i)) { //如果子条目都选中为,true queryBean.getData().get(i).setGroupChecked(true); } }//判断所有组是不是选中,来显示全选是不是选中 checkAll.setChecked(ischeclAll()); //设置适配器 if (queryBean!=null){myAdapter = new MyAdapter(MainActivity.this, queryBean,handler,getCartPresenter,sp); expandableListView.setAdapter(myAdapter); }//展开组 for (int i=0; i(); params.put("uid","4575"); params.put("pid", String.valueOf(queryBean.getData().get(i).getList().get(j).getPid())); RetrofitUtil.delcards(params, new Callback() { @Override public void onResponse(Call call, Response response) { if (response.isSuccessful()){ getCartPresenter.getNetWrok(); } }@Override public void onFailure(Call call, Throwable t) {} }); } } }break; case R.id.goumai:break; case R.id.checkAll: Log.i("tag","tagtagtagtagtagtagtagtagtag"); myAdapter.setAllChildState(checkAll.isChecked()); ischeclAll(); break; } }@Override public void onSeccess(QueryBean queryBean) { if (queryBean!=null){ this.queryBean = queryBean; Message msg = Message.obtain(); msg.what=1; msg.obj=queryBean; handler.sendMessage(msg); }else{ Toast.makeText(MainActivity.this,"购物车为空",Toast.LENGTH_SHORT).show(); } }//判断当前子条目的选中状态 private boolean ischilditemcheck(int groupposition) { for (int i=0; i




 Activity布局


 


 








适配器 


 
import android.content.Context;

import android.content.SharedPreferences;

import android.net.Uri;

import android.os.Handler;

import android.os.Message;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseExpandableListAdapter;

import android.widget.CheckBox;

import android.widget.LinearLayout;

import android.widget.TextView;

import android.widget.Toast;
import com.facebook.drawee.view.SimpleDraweeView;

import com.luobing.jinjieweek2.R;

import com.luobing.jinjieweek2.model.bean.CountPriceBean;

import com.luobing.jinjieweek2.model.bean.QueryBean;

import com.luobing.jinjieweek2.model.bean.UpdataBean;

import com.luobing.jinjieweek2.model.util.RetrofitUtil;

import com.luobing.jinjieweek2.presenter.GetCartPresenter;
import java.text.DecimalFormat;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;
/**
 * Created by Administrator on 2018/1/6.
 */public class MyAdapter extends BaseExpandableListAdapter{
Context context;

QueryBean getCartBean;

Handler handler;

int childI;

private int child_size;

GetCartPresenter getCartPresenter;

private int childitemListSize;

private int index;

private SharedPreferences sp;

final String uid ="4575";

//
public MyAdapter(Context context, QueryBean getCartBean, Handler handler, GetCartPresenter getCartPresenter, SharedPreferences sp) {
this.context=context;

this.getCartBean=getCartBean;

this.handler=handler;

this.getCartPresenter=getCartPresenter;

this.sp=sp;

}@Override
public int getGroupCount() {
return getCartBean.getData().size();

}@Override
public int getChildrenCount(int groupPosition) {
return getCartBean.getData().get(groupPosition).getList().size();

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

}@Override
public Object getChild(int groupPosition, int childPosition) {
return getCartBean.getData().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 true;

}@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;

}//查找group一级控件的方法
@Override
public View getGroupView(int groupPosition, boolean isExpanded, View view, ViewGroup parent) {//获得集合
final List data = https://www.it610.com/article/getCartBean.getData();

final GroupHolder groupHolder;

if (view==null){
view = View.inflate(context, R.layout.group_item_layout,null);

groupHolder = new GroupHolder();

groupHolder.check_group=view.findViewById(R.id.group_check);

groupHolder.text_group=view.findViewById(R.id.group_text_title);

view.setTag(groupHolder);

}else{
groupHolder = (GroupHolder) view.getTag();

}//找到集合中的一个
final QueryBean.DataBean dataBean = data.get(groupPosition);

//赋值
groupHolder.check_group.setChecked(dataBean.isGroupChecked());

groupHolder.text_group.setText(dataBean.getSellerName());

//设置一级的点击事件
groupHolder.check_group.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {child_size = dataBean.getList().size();
childI = 0;

//更新购物车
updateAllInGroup(groupHolder.check_group.isChecked(),dataBean);

}
});
return view;

}//更新购物车的方法
public void updateAllInGroup(final boolean checked, final QueryBean.DataBean dataBean) {
//拿到子条目集合
QueryBean.DataBean.ListBean listBean = dataBean.getList().get(childI);
Map params = new HashMap<>();

params.put("uid","4575");

params.put("sellerid", String.valueOf(listBean.getSellerid()));

params.put("pid", String.valueOf(listBean.getPid()));

params.put("selected", String.valueOf(checked? 1:0));
RetrofitUtil.updatacards(params,new retrofit2.Callback() {
@Override
public void onResponse(retrofit2.Call call, retrofit2.Response response) {
if (response.isSuccessful()){
childI=childI+1;

//如果小于,则递归
if (childI call, Throwable t) {}
});

}//查找child二级控件的方法
@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View view, ViewGroup parent) {final ChildHolder childHolder;

if (view == null) {
view = View.inflate(context, R.layout.child_item_layout, null);

childHolder = new ChildHolder();

childHolder.check_child = view.findViewById(R.id.child_check);

childHolder.simpleDraweeView = view.findViewById(R.id.simpleDraweeView);

childHolder.text_title = view.findViewById(R.id.child_tetle);

childHolder.text_price = view.findViewById(R.id.text_price);

childHolder.text_jian = view.findViewById(R.id.child_jian);

childHolder.text_add = view.findViewById(R.id.child_add);

childHolder.text_num = view.findViewById(R.id.child_num);

childHolder.linearLayout=view.findViewById(R.id.bianji_layout);

childHolder.text_bianji=view.findViewById(R.id.bianjibtn);

childHolder.addjian=view.findViewById(R.id.addjian);

childHolder.text_datermine = view.findViewById(R.id.datermine);

childHolder.text_child_shuliang = view.findViewById(R.id.child_shuliang);
//复用
view.setTag(childHolder);

} else {
childHolder = (ChildHolder) view.getTag();

}
boolean flag = sp.getBoolean("flag", false);

if(flag){
childHolder.linearLayout.setVisibility(View.VISIBLE);

childHolder.addjian.setVisibility(View.GONE);

}else{
childHolder.linearLayout.setVisibility(View.GONE);

childHolder.addjian.setVisibility(View.VISIBLE);

}final QueryBean.DataBean.ListBean listBean = getCartBean.getData().get(groupPosition).getList().get(childPosition);

//赋值
childHolder.text_title.setText(listBean.getTitle());

childHolder.text_price.setText(listBean.getBargainPrice()+"");

childHolder.text_num.setText(listBean.getNum()+"");

childHolder.text_child_shuliang.setText(listBean.getNum()+"");

childHolder.check_child.setChecked(listBean.getSelected()==0? false:true);
Uri uri = Uri.parse(listBean.getImages().split("\\|")[0]);

childHolder.simpleDraweeView.setImageURI(uri);

//设置编辑的点击事件
childHolder.text_bianji.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
childHolder.linearLayout.setVisibility(View.GONE);

childHolder.addjian.setVisibility(View.VISIBLE);

SharedPreferences.Editor edit = sp.edit();

edit.putBoolean("flag",false);

edit.commit();

}
});

//编辑之后确定的点击事件
childHolder.text_datermine.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
childHolder.linearLayout.setVisibility(View.VISIBLE);

childHolder.addjian.setVisibility(View.GONE);

SharedPreferences.Editor edit = sp.edit();

edit.putBoolean("flag",true);

edit.commit();

}
});
//设置点击事件
childHolder.check_child.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
updateCart(listBean,true,false);

}
});
//减号
childHolder.text_jian.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (listBean.getNum()==1){
return;

}else{
updateCart(listBean,false,false);

}
}
});
//加号
childHolder.text_add.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
updateCart(listBean,false,true);

}
});
return view;

}//更新购物车的
private void updateCart(QueryBean.DataBean.ListBean listBean, boolean upstate, boolean addorjian) {
Map params = new HashMap<>();

params.put("uid","4575");

params.put("sellerid", String.valueOf(listBean.getSellerid()));

params.put("pid", String.valueOf(listBean.getPid()));

params.put("selected", String.valueOf(listBean.getSelected()));

Toast.makeText(context,"当前状态"+upstate,Toast.LENGTH_SHORT).show();

params.put("num",listBean.getNum()+"");
if (upstate){
params.put("selected", String.valueOf(listBean.getSelected()==0? 1:0));

}else{if (addorjian){
params.put("num",listBean.getNum()+1+"");

}else{
params.put("num",listBean.getNum()-1+"");

}
}RetrofitUtil.updatacards(params, new retrofit2.Callback() {
@Override
public void onResponse(retrofit2.Call call, retrofit2.Response response) {
if (response.isSuccessful()){
getCartPresenter.getNetWrok();
}
}@Override
public void onFailure(retrofit2.Call call, Throwable t) {}
});
}/**
* 计算价格和数量 并发送显示
*/
public void sendPriceAndCount() {double price = 0;

int count = 0;
//通过判断二级列表是否勾选,,,,计算价格数量
for (int i=0;
i allList = new ArrayList<>();
for (int i=0;
i allList, final boolean checked) {QueryBean.DataBean.ListBean listBean = allList.get(index);
//0//更新的操作
Map params = new HashMap<>();

params.put("num",listBean.getNum()+1+"");

params.put("uid","4575");

params.put("sellerid", String.valueOf(listBean.getSellerid()));

params.put("pid", String.valueOf(listBean.getPid()));

params.put("selected", String.valueOf(checked ? 1:0));

params.put("num", String.valueOf(listBean.getNum()));
RetrofitUtil.updatacards(params, new retrofit2.Callback() {
@Override
public void onResponse(retrofit2.Call call, retrofit2.Response response) {
if (response.isSuccessful()){
index = index +1;

if (index < childitemListSize){updateAllChild(allList,checked);
}else {
//查询购物车
getCartPresenter.getNetWrok();

}
}
}@Override
public void onFailure(retrofit2.Call call, Throwable t) {
}
});

}//viewHolder
private class GroupHolder{
CheckBox check_group;

TextView text_group;

}private class ChildHolder{
CheckBox check_child;

SimpleDraweeView simpleDraweeView;

LinearLayout linearLayout;

LinearLayout addjian;

TextView text_datermine;

TextView text_bianji;

TextView text_title;

TextView text_price;

TextView text_jian;

TextView text_num;

TextView text_add;

TextView text_child_shuliang;

}



一级列表布局 


 





二级列表布局 


 







RetrofitUtil工具类 【安卓开发|购物车操作增删改查】


 
import com.luobing.jinjieweek2.model.bean.AddBean;

import com.luobing.jinjieweek2.model.bean.DelCardBean;

import com.luobing.jinjieweek2.model.bean.QueryBean;

import com.luobing.jinjieweek2.model.bean.UpdataBean;
import java.util.HashMap;

import java.util.Map;
import okhttp3.OkHttpClient;

import retrofit2.Call;

import retrofit2.Callback;

import retrofit2.Retrofit;

import retrofit2.converter.gson.GsonConverterFactory;

import retrofit2.http.FieldMap;

import retrofit2.http.FormUrlEncoded;

import retrofit2.http.POST;

//import retrofit.GsonConverterFactory;

//import retrofit.Retrofit;
/**
 * Created by Administrator on 2018/1/6.
 */public class RetrofitUtil {privatestatic Retrofit retrofit = null;
private RetrofitUtil() {}public static Retrofit getInstance(){
OkHttpClient instance = OkhttpUtil.getInstance();

if (retrofit==null){
synchronized (RetrofitUtil.class){
retrofit = new Retrofit.Builder()
.baseUrl(Api.URR_BASE)
.client(OkhttpUtil.getInstance())
.addConverterFactory(GsonConverterFactory.create())
.build();

}
}
return retrofit;

}interface ServerInterface {@FormUrlEncoded
@POST("product/getCarts")
Call queryCarts(@FieldMap Map par);
@FormUrlEncoded
@POST("product/addCart")
Call addCarts(@FieldMap Map par);
@FormUrlEncoded
@POST("product/updateCarts")
Call updataCarts(@FieldMap Map par);
@FormUrlEncoded
@POST("product/deleteCart")
Call delCarts(@FieldMap Map par);

}/**
* 参数化声明
* sellerid	string	是	商户id
*pid	string	是	商品id
*num	string	是	商品数量
*selected	string	是	是否选中
* @param uid
* @param callback
*//**
* 查询购物车的方法
*/public static void quertCarts(Map map,Callback callback) {Call cartsBeanCall = getInstance().create(ServerInterface.class).queryCarts(map);

cartsBeanCall.enqueue(callback);
}//添加购物车的方法
public static void addcards(String pid,Map map,Callback callback){//执行添加的方法
Call addBeanCall = getInstance().create(ServerInterface.class).addCarts(map);

addBeanCall.enqueue(callback);

}//更新购物车的方法
public static void updatacards(Map map,Callback callback){//执行添加的方法
Call updataBeanCall = getInstance().create(ServerInterface.class).updataCarts(map);

updataBeanCall.enqueue(callback);

}//删除购物车的方法
public static void delcards(Map map,Callback callback){//执行添加的方法
Call delCardBeanCall = getInstance().create(ServerInterface.class).delCarts(map);

delCardBeanCall.enqueue(callback);

}



 

 okhttputil工具 


 
import android.os.Environment;

import android.util.Log;
import java.io.File;

import java.io.IOException;

import java.util.HashMap;

import java.util.Map;

import java.util.concurrent.TimeUnit;
import okhttp3.Cache;

import okhttp3.Call;

import okhttp3.Callback;

import okhttp3.FormBody;

import okhttp3.Interceptor;

import okhttp3.OkHttpClient;

import okhttp3.Request;

import okhttp3.RequestBody;

import okhttp3.Response;
/**
 * Created by Administrator on 2018/1/6.
 */public class OkhttpUtil {
public static final int CONNECTTIME = 0b1010;

//私有静态成员变量,私有构造方法
private static OkHttpClient okHttpClient=null;
private OkhttpUtil() {
}public static OkHttpClient getInstance(){
if (okHttpClient==null){
synchronized (OkhttpUtil.class){
//指定缓存路径
File file = new File(Environment.getExternalStorageDirectory() , "chche");

//指定缓存大小
int chchesize = 10*1024*1024;

okHttpClient = new OkHttpClient.Builder()
.readTimeout(CONNECTTIME, TimeUnit.SECONDS)//读取超时
.connectTimeout(CONNECTTIME,TimeUnit.SECONDS)
.writeTimeout(CONNECTTIME,TimeUnit.SECONDS)
.cache(new Cache(file.getAbsoluteFile(),chchesize))
.build();

}
}
return okHttpClient;

}/**
* get请求
* 参数1 url
* 参数2 回调Callback
*/public static void doGet(String url, Callback callback) {//创建OkHttpClient请求对象
OkHttpClient okHttpClient = getInstance();

//创建Request
Request request = new Request.Builder().url(url).build();

//得到Call对象
Call call = okHttpClient.newCall(request);

//执行异步请求
call.enqueue(callback);

}



 

 



		  	

    
    




    
    
    


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