Activity
// String url = "http://www.zhaoapi.cn/product/getCarts?uid=71"; //网络请求使用的地址
String getUrl = "接口不能访问的情况下使用这个,直接复制json串";
private ListView listView01;
private ListView listView02;
private List<Meau.DataBean> list = new ArrayList<>();
private List<Meau.DataBean.ListBean> list1 = new ArrayList<>();
private MyListViewYiAdapter adapter;
private MyListViewErAdapter adapter1;
private List<Meau.DataBean.ListBean> beans;
private List<Meau.DataBean> data;
private TextView zongjia;
private RequestPresenter requestPresenter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView01 = findViewById(R.id.listview01);
listView02 = findViewById(R.id.listview02);
zongjia = findViewById(R.id.zongjia);
requestPresenter = new RequestPresenter(this);
requestPresenter.getRequest(getUrl);
adapter = new MyListViewYiAdapter(list, this);
adapter1 = new MyListViewErAdapter(list1, this);
//点击商铺切换商品
listView01.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
List<Meau.DataBean.ListBean> beans1 = data.get(position).getList();
list1.clear();
adapter1.notifyDataSetChanged();
list1.addAll(beans1);
adapter.notifyDataSetChanged();
adapter1.notifyDataSetChanged();
}
});
adapter1.setOnNumListener(new MyListViewErAdapter.OnNumListener() {
@Override
public void onNum() {
calculatePrice(data);
}
});
listView01.setAdapter(adapter);
listView02.setAdapter(adapter1);
}
@Override
public void requestSuccess(Meau meau) {
data = meau.getData();
Log.i("abc", data.toString());
calculatePrice(data);
list.addAll(data);
beans = data.get(1).getList();
list1.addAll(beans);
adapter.notifyDataSetChanged();
adapter1.notifyDataSetChanged();
Toast.makeText(this, "成功" + meau.getData(), Toast.LENGTH_LONG).show();
}
@Override
public void requestFail(Meau meau) {
Toast.makeText(this, "失败", Toast.LENGTH_LONG).show();
}
/**
* @author dingtao
* @date 2018/12/18 7:01 PM
* 计算总价格
*/
private void calculatePrice(List<Meau.DataBean> shopList){
double totalPrice=0;
int totalNum = 0;
for (int i = 0; i < shopList.size(); i++) {//循环的商家
Meau.DataBean shop = shopList.get(i);
for (int j = 0; j < shop.getList().size(); j++) {
Meau.DataBean.ListBean goods = shop.getList().get(j);
//计算价格
totalPrice = totalPrice + goods.getNum() * goods.getPrice();
totalNum+=goods.getNum();//计数
}
}
zongjia.setText("价格:"+totalPrice+"个数:"+totalNum);
}
//防止内存泄漏
@Override
protected void onDestroy() {
super.onDestroy();
new RequestPresenter(this).unBindCall();
}
Presenter
public class RequestPresenter {
private DataCall dataCall;
private Handler handler = new Handler(Looper.getMainLooper()){
@Override
public void handleMessage(Message msg) {
Meau meau = (Meau) msg.obj;
if (meau.getCode() == 0){
dataCall.requestSuccess(meau);
}else {
dataCall.requestFail(meau);
}
}
};
public RequestPresenter(DataCall dataCall) {
this.dataCall = dataCall;
}
public void getRequest(final String url){
new Thread(new Runnable() {
@Override
public void run() {
Meau data = RequestModel.getData(url);
Message message = handler.obtainMessage();
Log.i("aaa1",data.toString());
message.obj = data;
handler.sendMessage(message);
}
}).start();
}
public void unBindCall(){
this.dataCall = null;
}
Model
public static Meau getData(String url){
//如果使用的是网络数据,把下一行打开,如果不是请注释掉,详情看Activity顶部,
// String s = Utils.get(url);
Gson gson = new Gson();
Meau meau = gson.fromJson(url, Meau.class);
return meau;
}
bean
public class Meau {
private int code;
private String msg;
private List<DataBean> data;
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
public List<DataBean> getData() {
return data;
}
public void setData(List<DataBean> data) {
this.data = data;
}
public class DataBean {
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 class ListBean {
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;
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;
}
}
}
自定义接口
public interface DataCall {
void requestSuccess(Meau meau);
void requestFail(Meau meau);
}
自定义控件、加减符号
public class MyView extends LinearLayout implements View.OnClickListener {
private TextView mAddBtn,mSubBtn;
private TextView mNumText;
private MyViewListener myViewListener;
public MyView(Context context) {
super(context);
initView();
}
public MyView(Context context,AttributeSet attrs) {
super(context, attrs);
initView();
}
public MyView(Context context,AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
initView();
}
private void initView(){
//加载layout布局,第三个参数ViewGroup一定写成this
View view = View.inflate(getContext(),R.layout.car_add_sub_layout,this);
mAddBtn = view.findViewById(R.id.btn_add);
mSubBtn = view.findViewById(R.id.btn_sub);
mNumText = view.findViewById(R.id.text_number);
mAddBtn.setOnClickListener(this);
mSubBtn.setOnClickListener(this);
}
@Override
public void onClick(View v) {
int number = Integer.parseInt(mNumText.getText().toString());
switch (v.getId()){
case R.id.btn_add:
number++;
mNumText.setText(number+"");
break;
case R.id.btn_sub:
if (number==0){
Toast.makeText(getContext(),"数量不能小于0",Toast.LENGTH_LONG).show();
return;
}
number--;
mNumText.setText(number+"");
break;
}
if (myViewListener != null){
myViewListener.myView(number);
}
}
public void setCount(int count){
mNumText.setText(count+"");
}
public void setMyViewListener(MyViewListener myViewListener) {
this.myViewListener = myViewListener;
}
public interface MyViewListener{
void myView(int count);
}
工具类,带日志拦截器
public class Utils {
public static String get(String url){
//日志拦截器
OkHttpClient okHttpClient = new OkHttpClient.Builder().addInterceptor(new LoggingInterceptor()).build();
Request build = new Request.Builder().url(url).get().build();
try {
Response execute = okHttpClient.newCall(build).execute();
return execute.body().string();
} catch (IOException e) {
e.printStackTrace();
}
return "";
}
}
日志拦截器,实现Interceptor
public class LoggingInterceptor implements Interceptor {
@Override
public 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;
}
第一个适配器
public class MyListViewYiAdapter extends BaseAdapter {
private List<Meau.DataBean> list = new ArrayList<>();
private Context context;
public MyListViewYiAdapter(List<Meau.DataBean> list, Context context) {
this.list = list;
this.context = context;
}
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int position) {
return list.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null){
convertView = View.inflate(context, R.layout.listview_yi_layout, null);
holder = new ViewHolder();
holder.text_name = convertView.findViewById(R.id.text_name);
convertView.setTag(holder);
}else {
holder = (ViewHolder) convertView.getTag();
}
holder.text_name.setText(list.get(position).getSellerName());
return convertView;
}
class ViewHolder{
TextView text_name;
}
第二个适配器
public class MyListViewErAdapter extends BaseAdapter {
private List<Meau.DataBean.ListBean> list = new ArrayList<>();
private Context context;
public MyListViewErAdapter(List<Meau.DataBean.ListBean> list, Context context) {
this.list = list;
this.context = context;
}
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int position) {
return list.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
MyListViewErAdapter.ViewHolder holder;
if (convertView == null){
convertView = View.inflate(context, R.layout.listview_er_layout, null);
holder = new MyListViewErAdapter.ViewHolder();
holder.text_name = convertView.findViewById(R.id.text_name);
holder.text_price = convertView.findViewById(R.id.text_price);
holder.img_pic = convertView.findViewById(R.id.img_pic);
holder.myView = convertView.findViewById(R.id.myView);
convertView.setTag(holder);
}else {
holder = (MyListViewErAdapter.ViewHolder) convertView.getTag();
}
holder.text_name.setText(list.get(position).getTitle());
holder.text_price.setText(list.get(position).getPrice()+"");
String images = list.get(position).getImages();
String[] split = images.split("\\|");
if (split.length > 0) {
Glide.with(context).load(split[0]).into(holder.img_pic);
}
Log.i("asdf",list.get(position).getTitle());
holder.myView.setCount(list.get(position).getNum());
holder.myView.setMyViewListener(new MyView.MyViewListener() {
@Override
public void myView(int count) {
list.get(position).setNum(count);
onNumListener.onNum();
}
});
return convertView;
}
class ViewHolder{
TextView text_name,text_price;
ImageView img_pic;
MyView myView;
}
private OnNumListener onNumListener;
public void setOnNumListener(OnNumListener onNumListener) {
this.onNumListener = onNumListener;
}
public interface OnNumListener{
void onNum();
}
Activity布局
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="9"
android:orientation="horizontal">
<ListView
android:id="@+id/listview01"
android:layout_width="200dp"
android:layout_height="match_parent"
android:background="#ccc" />
<ListView
android:id="@+id/listview02"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<TextView
android:id="@+id/zongjia"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:text="总价:0¥"
android:gravity="center"
android:textColor="#7FFF00"/>
自定义控件布局
<TextView
android:id="@+id/btn_add"
android:layout_width="30dp"
android:layout_height="30dp"
android:focusable="false"
android:textSize="20sp"
android:gravity="center"
android:text="+" />
<TextView
android:id="@+id/text_number"
android:layout_width="60dp"
android:layout_height="30dp"
android:gravity="center"
android:textSize="14sp"
android:text="0" />
<TextView
android:id="@+id/btn_sub"
android:layout_width="30dp"
android:layout_height="30dp"
android:textSize="20sp"
android:focusable="false"
android:gravity="center"
android:text="-" />
适配器第一个布局
<TextView
android:id="@+id/text_name"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="商铺名称"
android:gravity="center"
android:textColor="#fff"
android:textSize="18sp"/>
适配器第二个布局
<ImageView
android:id="@+id/img_pic"
android:layout_width="188dp"
android:layout_height="188dp"
android:src="@mipmap/ic_launcher" />
<TextView
android:id="@+id/text_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="商铺名称"
android:layout_marginLeft="189dp"
android:textColor="#0f0"
android:textSize="16sp" />
<TextView
android:id="@+id/text_price"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="价格"
android:layout_marginTop="100dp"
android:textColor="#f00"
android:textSize="18sp"
android:layout_marginLeft="189dp"/>
<com.bwie.myelm.core.MyView
android:id="@+id/myView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="160dp"
android:layout_marginLeft="258dp"/>