<?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:orientation="vertical" >         <EditText      android:id="@+id/et_querylocation"     android:layout_height="wrap_content"     android:layout_width="match_parent"     android:textColor="#000000"     android:hint="輸入號碼"/>       <Button      android:onClick="query"     android:textSize="24sp"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:text="查詢"/>      <TextView      android:layout_width="match_parent"     android:layout_height="wrap_content"     android:id="@+id/tv_phonelocation"     android:textSize="20sp"     android:textColor="#000000"/>  </LinearLayout> 

package com.example.phonehome;  import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLEncoder; import java.util.HashMap; import java.util.Map;  import org.json.JSONObject;  import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.text.TextUtils; import android.view.View; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast;  public class MainActivity extends Activity {    private EditText et_phone;   private TextView tv_phone;   private final static int START = 0;   private final static int FINISH = 1;   private String phone;//待查詢號碼   //號碼信息   private static String province;   private static String city;   private static String company;   private static String card;       public static final String DEF_CHATSET = "UTF-8";    public static final int DEF_CONN_TIMEOUT = 30000;    public static final int DEF_READ_TIMEOUT = 30000;        public static final String APPKEY ="申請的APP KEY";       //子線程中查詢數據開始、完成時發送消息，完成相應操作    Handler handler = new Handler(){      public void handleMessage(android.os.Message msg) {        switch (msg.what) {       case START:         Toast.makeText(MainActivity.this, "正在查詢，請稍候", Toast.LENGTH_SHORT).show();         break;                case FINISH:         //在Textview中顯示查得的號碼信息（子線程中不能更新UI）         tv_phone.setText(province +" "+ city + " " + company + " " + card);         break;       default:         break;       }      };    };       @Override   protected void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     initView();   }      //Button的店家事件，獲取待查詢號碼后在子線程中進行查詢   public void query(View v){     phone = et_phone.getText().toString().trim();     if (!TextUtils.isEmpty(phone)) {       new Thread(){         public void run() {           //開始查詢           handler.obtainMessage(START).sendToTarget();           getRequest(phone);           //查得結果           handler.obtainMessage(FINISH).sendToTarget();         };       }.start();     }else {       Toast.makeText(MainActivity.this, "輸入號碼不能為空", Toast.LENGTH_SHORT).show();     }             }      //手機歸屬地查詢   public static void getRequest(String phone){     String result =null;     String url ="http://apis.juhe.cn/mobile/get";//請求接口地址     Map params = new HashMap();//請求參數       params.put("phone",phone);//需要查詢的手機號碼或手機號碼前7位       params.put("key",APPKEY);//應用APPKEY(應用詳細頁查詢)       params.put("dtype","");//返回數據的格式,xml或json，默認json       try {       //得到JSON數據，并進行解析       result =net(url, params, "GET");       JSONObject object = new JSONObject(result);       JSONObject ob = new JSONObject(object.get("result").toString()+"");       province = ob.getString("province");       city = ob.getString("city");       company = ob.getString("company");       card = ob.getString("card");     } catch (Exception e) {       e.printStackTrace();     }   }      /**   *   * @param strUrl 請求地址   * @param params 請求參數   * @param method 請求方法   * @return 網絡請求字符串   * @throws Exception   */   public static String net(String strUrl, Map params,String method) throws Exception {     HttpURLConnection conn = null;     BufferedReader reader = null;     String rs = null;     try {       StringBuffer sb = new StringBuffer();       if(method==null || method.equals("GET")){         strUrl = strUrl+"?"+urlencode(params);       }       URL url = new URL(strUrl);       conn = (HttpURLConnection) url.openConnection();       if(method==null || method.equals("GET")){         conn.setRequestMethod("GET");       }else{         conn.setRequestMethod("POST");         conn.setDoOutput(true);       }       //conn.setRequestProperty("User-agent", userAgent);       conn.setUseCaches(false);       conn.setConnectTimeout(DEF_CONN_TIMEOUT);       conn.setReadTimeout(DEF_READ_TIMEOUT);       conn.setInstanceFollowRedirects(false);       conn.connect();       if (params!= null && method.equals("POST")) {         try {           DataOutputStream out = new DataOutputStream(conn.getOutputStream());           out.writeBytes(urlencode(params));         } catch (Exception e) {           // TODO: handle exception           e.printStackTrace();         }                }       InputStream is = conn.getInputStream();       reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET));       String strRead = null;       while ((strRead = reader.readLine()) != null) {         sb.append(strRead);       }       rs = sb.toString();     } catch (IOException e) {       e.printStackTrace();     } finally {       if (reader != null) {         reader.close();       }       if (conn != null) {         conn.disconnect();       }     }     return rs;   }    //將map型轉為請求參數型   public static String urlencode(Map<String,String> data) {     StringBuilder sb = new StringBuilder();     for (Map.Entry i : data.entrySet()) {       try {         sb.append(i.getKey()).append("=").append(URLEncoder.encode(i.getValue()+"","UTF-8")).append("&");       } catch (UnsupportedEncodingException e) {         e.printStackTrace();       }     }     return sb.toString();   }           private void initView() {     setContentView(R.layout.activity_main);     et_phone = (EditText) findViewById(R.id.et_querylocation);     tv_phone = (TextView) findViewById(R.id.tv_phonelocation);   }  }