单号查询"/>
快递单号查询
1.用RxVolley网络请求技术，在APP的build.gradle中添加RxVolley依赖包
compile 'com.kymjs.rxvolley:rxvolley:1.1.0'
2.
package com.example.courier;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;
import com.kymjs.rxvolley.RxVolley;
import com.kymjs.rxvolley.client.HttpCallback;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import Adapter.CourierAdapter;
import entity.CourierData;
/**
* Created by acer-pc on 2018/3/8.
*/
public class CourierActivity extends AppCompatActivity implements View.OnClickListener {private EditText et_name;
private EditText et_number;
private Button bt;
private ListView mListView;
private List<CourierData> mList = new ArrayList<>();
@Override
protected void onCreate( Bundle savedInstanceState) {super.onCreate(savedInstanceState);
setContentView(R.layout.activity);
initview();
}private void initview() {et_name = (EditText)findViewById(R.id.et_name);
et_number = (EditText)findViewById(R.id.et_number);
bt= (Button)findViewById(R.id.get_courier);
mListView = (ListView) findViewById(R.id.mListView);
bt.setOnClickListener(this);
}@Override
public void onClick(View v) {switch (v.getId()){case R.id.get_courier:/**
* 1.获取当前输入框的内容
* 2.判断是否为空
* 3.拿到数据去请求数据
* 4.解析JSon
* 5.ListView适配器
* 6.实体类（item）
* 7.设置数据/显示效果
*/
//1.获取当前输入框的内容
String name = et_name.getText().toString().trim();
String number = et_number.getText().toString().trim();
//申请聚合数据中快递单号KEY
String KEY ="*******";
//拼接我们的URL
String url = "="+KEY+"&com="+name+"&no="+number;
//2.判断是否为空
if(!TextUtils.isEmpty(name)&!TextUtils.isEmpty(number)){//3.拿到数据去请求数据(JSON)
RxVolley.get(url, new HttpCallback() {@Override
public void onSuccess(String t) {super.onSuccess(t);
Toast.makeText(CourierActivity.this,t,Toast.LENGTH_LONG).show();
//4.解析JSON
parsingJson(t);
}});
}else{Toast.makeText(this,"输入框不能为空",Toast.LENGTH_LONG).show();
}break;
}}//解析数据
private void parsingJson(String t) {try {JSONObject jsonObject = new JSONObject(t);
JSONObject jsonResult = jsonObject.getJSONObject("result");
JSONArray jsonArray = jsonResult.getJSONArray("list");
for(int i = 0;i<jsonArray.length();i++ ){JSONObject json = (JSONObject) jsonArray.get(i);
CourierData data = new CourierData();
data.setRemark(json.getString("remark"));
data.setZone(json.getString("zone"));
data.setDatetime(json.getString("datetime"));
mList.add(data);
}//倒序处理
Collections.reverse(mList);
CourierAdapter adapter = new CourierAdapter(this,mList);
mListView.setAdapter(adapter);
} catch (JSONException e) {e.printStackTrace();
}}
}
3.实体类（即：从JSON中需要解析的属性）
package entity;
/**
* Created by acer-pc on 2018/3/8.
*/
public class CourierData {//时间
private String datetime;
//状态
private String remark;
//城市
private String zone;
public String getDatetime() {return datetime;
}public void setDatetime(String datetime) {this.datetime = datetime;
}public String getRemark() {return remark;
}public void setRemark(String remark) {this.remark = remark;
}public String getZone() {return zone;
}public void setZone(String zone) {this.zone = zone;
}@Override
public String toString() {return "CourierData{" +"datetime='" + datetime + '\'' +", remark='" + remark + '\'' +", zone='" + zone + '\'' +'}';
}
}
4.数据：Adatper
package Adapter;
/**
* Created by acer-pc on 2018/3/8.
*/
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import com.example.courier.R;
import java.util.List;
import entity.CourierData;
/**
* 标准套路
* 1.首先继承与BaseAdapter
* 2.按住ALT+INS，把getCount，getItem，getItemId，getView方法导入
* 3.按住ALT+INS，把CourierAdapter构造方法导入
* 4.CourierAdapter（）要传什么呢？
* 4.1首先肯定是需要一个上下文(content),
* 4.2上下文之后肯定需要数据啊，所以需要操作数据List<实体类>
* 5.布局加载器加载item
*/
public class CourierAdapter extends BaseAdapter {private Context mContext;
private List<CourierData> mList;
//布局加载器
private LayoutInflater inflater;
//声明一个data吧，声明一个实体类
private CourierData data;
public CourierAdapter(Context mContext,List<CourierData> mList) {this.mContext = mContext;
this.mList = mList;
//布局加载器获取服务
inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}@Override
public int getCount() {//返回的肯定是数据源的长度
return mList.size();
}@Override
public Object getItem(int position) {//你要哪个item，我就获取并返回哪个item
return mList.get(position);
}@Override
public long getItemId(int position) {//有ID的item的话更方便了，直接返回position
return position;
}//重中之重
@Override
public View getView(int position, View convertView, ViewGroup parent) {ViewHolder viewHolder = null;
//用ViewHolder缓存
//第一次加载，需要各种各样的初始化
if(convertView == null){//new一个ViewHolder
viewHolder = new ViewHolder();
//加载下item布局
convertView = inflater.inflate(R.layout.courier_item,null);
viewHolder.tv_remark = (TextView) convertView.findViewById(R.id.tv_remark);
viewHolder.tv_zone = (TextView)convertView.findViewById(R.id.tv_zone);
viewHolder.tv_datetime =(TextView)convertView.findViewById(R.id.tv_datetime);
//设置缓存
convertView.setTag(viewHolder);
}else {//否则的话直接去缓存
viewHolder = (ViewHolder) convertView.getTag();
}//设置数据就好了
data = mList.get(position);
viewHolder.tv_remark.setText(data.getRemark());
viewHolder.tv_zone.setText(data.getZone());
viewHolder.tv_datetime.setText(data.getDatetime());
return convertView;
}class ViewHolder{private TextView tv_remark;
private TextView tv_zone;
private TextView tv_datetime;
}}
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快递单号查询
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