android 精确定位
16lz
2021-01-26
原理
通过手机读取附近的手机信号基站id，然后查询google公开的基站数据库获取经纬度。
实现
通过TelephonyManager 获取lac:mcc:mnc:cell-id(请参考sdk doc文档中TelephonyManager api介绍)，发送到http://www.google.com/loc/json 查询。
如果不知道lac, mcc, mnc, cell-id, 请Google。
google location api 详细地址http://code.google.com/p/gears/wiki/GeolocationAPI
代码是以前写的简单的例子(其中函数getNeighboringCellInfo()在android1.5之下是有问题的，返回为空，后者返回无效数据)
http://hi.baidu.com/adnroidorg/blog/item/96c65dd750a12c16a08bb7eb.html
通过手机读取附近的手机信号基站id，然后查询google公开的基站数据库获取经纬度。
实现
通过TelephonyManager 获取lac:mcc:mnc:cell-id(请参考sdk doc文档中TelephonyManager api介绍)，发送到http://www.google.com/loc/json 查询。
如果不知道lac, mcc, mnc, cell-id, 请Google。
google location api 详细地址http://code.google.com/p/gears/wiki/GeolocationAPI
代码是以前写的简单的例子(其中函数getNeighboringCellInfo()在android1.5之下是有问题的，返回为空，后者返回无效数据)
package com.test;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.StringWriter;import java.io.UnsupportedEncodingException;import java.util.List;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.DefaultHttpClient;import org.json.JSONArray;import org.json.JSONException;import org.json.JSONObject;import android.app.Activity;import android.app.ProgressDialog;import android.content.Context;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.telephony.CellLocation;import android.telephony.NeighboringCellInfo;import android.telephony.PhoneStateListener;import android.telephony.TelephonyManager;import android.telephony.gsm.GsmCellLocation;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.TextView;public class LocationMe extends Activity implements OnClickListener { /** Called when the activity is first created. */ TelephonyManager manager; TextView tv,loc; int mcc, mnc, lac[] , ci[]; String mac; EditText mcc_text, mnc_text, lac_text, ci_text, mac_text; Button find,showinmap,update; int count ; ProgressDialog mProgressDialog; PhoneStateListener listener; Handler mHandler = new Handler(){ @Override public void handleMessage(Message msg) { if(msg.what==100){ mProgressDialog.dismiss(); lac_text.setText(lac[0]+","+lac[1]);//+","+lac[2]); ci_text.setText(ci[0]+","+ci[1]);//+","+ci[2]); } if(msg.what==101){ tv.setText(result_location); loc.setText( la + "-" + lo); showinmap.setEnabled(true); mProgressDialog.dismiss(); } if(msg.what==102){ mProgressDialog.dismiss(); } } }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); tv = (TextView) findViewById(R.id.tv); loc = (TextView) findViewById(R.id.location); mcc_text = (EditText) findViewById(R.id.mcc); mnc_text = (EditText) findViewById(R.id.mnc); lac_text = (EditText) findViewById(R.id.lac); ci_text = (EditText) findViewById(R.id.ci); mac_text= (EditText) findViewById(R.id.mac); find = (Button) findViewById(R.id.find_btn); showinmap = (Button) findViewById(R.id.show_in_map); manager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE); update= (Button) findViewById(R.id.update); find.setOnClickListener(this); update.setOnClickListener(this); showinmap.setOnClickListener(this); ci = new int[10]; lac = new int[10]; mProgressDialog =new ProgressDialog(this); mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER); mProgressDialog.setCancelable(false); listener = new CellStateListener (); } void update(){ count =0;// CellLocation location = manager.getCellLocation(); Log.e("Location","NetworkCountryIso"+manager.getNetworkCountryIso());//cn mcc = Integer.valueOf(manager.getNetworkOperator().substring(0,3)); mcc_text.setText(String.valueOf(mcc)); mnc = Integer.valueOf(manager.getNetworkOperator().substring(3,5));; mnc_text.setText(String.valueOf(mnc)); // manager.listen(listener, PhoneStateListener.LISTEN_CELL_LOCATION); manager.listen(listener, 0); GsmCellLocation sm = ((GsmCellLocation)manager.getCellLocation()); Log.e("Location", "cid"+sm.getCid()+" lac"+sm.getLac()); lac[0]=sm.getLac();// mProgressDialog.setMessage("Updating...(0/3)");// mProgressDialog.show(); List<NeighboringCellInfo> list = manager.getNeighboringCellInfo(); count = list.size(); Log.e("Location","neighbors "+count); NeighboringCellInfo info; loc.setText(""); ci_text.setText(""); for(int i =0; i<count;i++){ info = list.get(i); Log.e("Location", info.getCid()+"-"+info.getRssi()+" "+info.toString()); lac=lac[0]; ci=info.getCid()-415500000; ci_text.setText(ci_text.getText().toString()+","+ci); loc.setText(loc.getText()+" "+info.getCid()); } } void findme() { mProgressDialog.setMessage("Finding..."); mProgressDialog.show(); Thread thread = new Thread(){ public void run(){ try { DefaultHttpClient client = new DefaultHttpClient(); HttpPost post = new HttpPost("http://www.google.com/loc/json");//http://www.google.com/glm/mmap");// JSONObject holder = new JSONObject(); holder.put("version", "1.1.0");// holder.put("host", "maps.google.com");// holder.put("home_mobile_country_code", mcc);// holder.put("home_mobile_network_code", mnc);// holder.put("radio_type", "gsm");// holder.put("carrier", "Vodafone"); holder.put("request_address", true); holder.put("address_language", "en-us"); JSONObject data ;// = new JSONObject();// data.put("latitude", 31.244506);// data.put("longitude", 121.591095);// holder.put("location",data); JSONArray array = new JSONArray(); for(int i =0;i<(count<2 count:2);i++){ data = new JSONObject(); data.put("cell_id", ci); // 9457, 8321,8243 data.put("location_area_code", lac);// 28602 data.put("mobile_country_code", mcc);// 208 data.put("mobile_network_code", mnc);// 0 data.put("age", 0);// data.put("signal_strength", -60);// data.put("timing_advance", 5555); array.put(data); } holder.put("cell_towers", array); ////////////////////////WIFI//////////////////////////////////////// WifiManager wm = (WifiManager)getSystemService(Context.WIFI_SERVICE);// WifiInfo info = wm.getConnectionInfo();// String mac = info.getMacAddress();// Log.e("LocationMe","mac:"+mac);// data = new JSONObject();// data.put("mac_address", mac);// data.put("signal_strength", 8);// data.put("age", 0);// array = new JSONArray();// array.put(data); //holder.put("wifi_towers ", array); //////////////////////////////////// StringEntity se = new StringEntity(holder.toString()); Log.e("Location send",holder.toString()); post.setEntity(se); HttpResponse resp = client.execute(post); HttpEntity entity = resp.getEntity(); BufferedReader br = new BufferedReader(new InputStreamReader(entity .getContent())); StringBuffer sb = new StringBuffer(); String result = br.readLine(); while (result != null) { Log.e("Locaiton reseive", result); sb.append(result); result = br.readLine(); } result_location = sb.toString(); data = new JSONObject(sb.toString()); data = (JSONObject) data.get("location"); la = (Double) data.get("latitude"); lo = (Double) data.get("longitude"); mHandler.sendEmptyMessage(101); } catch (ClientProtocolException e) { e.printStackTrace(); mHandler.sendEmptyMessage(102); } catch (IOException e) { e.printStackTrace(); mHandler.sendEmptyMessage(102); } catch (JSONException e) { e.printStackTrace();// loc.setText("");// showinmap.setEnabled(false); mHandler.sendEmptyMessage(102); } } }; thread.start(); } String result_location; double la,lo; @Override public void onClick(View arg0) { switch(arg0.getId()){ case R.id.find_btn:{ findme(); break; } case R.id.show_in_map:{ Uri mapUri = Uri.parse("geo:"+la+","+lo+" z=12&cbp=1"); startActivity(new Intent(Intent.ACTION_VIEW, mapUri)); break; } case R.id.update:{ update(); break; } } } class CellStateListener extends PhoneStateListener{ public void onCellLocationChanged(CellLocation location){ GsmCellLocation gsmL = (GsmCellLocation) location; if(count <2){ ci[count] = gsmL.getCid(); lac[count] = gsmL.getLac(); count++; mProgressDialog.setMessage("Updating...("+count+"/3)"); gsmL.requestLocationUpdate(); if(count ==2){ manager.listen(this, 0); mHandler.sendEmptyMessage(100); } } } }}/*Gears Request{ "version": "1.1.0", "host": "maps.google.com", "access_token": "2:k7j3G6LaL6u_lafw:4iXOeOpTh1glSXe", "home_mobile_country_code": 310, "home_mobile_network_code": 410, "radio_type": "gsm", "carrier": "Vodafone", "request_address": true, "address_language": "en_GB", "location": { "latitude": 51.0, "longitude": -0.1 }, "cell_towers": [ { "cell_id": 42, "location_area_code": 415, "mobile_country_code": 310, "mobile_network_code": 410, "age": 0, "signal_strength": -60, "timing_advance": 5555 }, { "cell_id": 88, "location_area_code": 415, "mobile_country_code": 310, "mobile_network_code": 580, "age": 0, "signal_strength": -70, "timing_advance": 7777 } ], "wifi_towers": [ { "mac_address": "01-23-45-67-89-ab", "signal_strength": 8, "age": 0 }, { "mac_address": "01-23-45-67-89-ac", "signal_strength": 4, "age": 0 } ]}* responce{ "location": { "latitude": 51.0, "longitude": -0.1, "altitude": 30.1, "accuracy": 1200.4, "altitude_accuracy": 10.6, "address": { "street_number": "100", "street": "Amphibian Walkway", "postal_code": "94043", "city": "Mountain View", "county": "Mountain View County", "region": "California", "country": "United States of America", "country_code": "US" } }, "access_token": "2:k7j3G6LaL6u_lafw:4iXOeOpTh1glSXe"}08-03 16:48:08.393: ERROR/Location(2350): NetworkCountryIsocn08-03 16:48:08.423: ERROR/Location(2350): cid9457 lac634008-03 16:48:08.443: ERROR/Location(2350): neighbors 508-03 16:48:08.453: ERROR/Location(2350): 415506483-9 [18c42033 at 9]08-03 16:48:08.463: ERROR/Location(2350): 415506691-9 [18c42103 at 9]08-03 16:48:08.463: ERROR/Location(2350): 415506529-7 [18c42061 at 7]08-03 16:48:08.473: ERROR/Location(2350): 415531363-11 [18c48163 at 11]08-03 16:48:08.483: ERROR/Location(2350): 415506531-6 [18c42063 at 6]**/ http://hi.baidu.com/adnroidorg/blog/item/96c65dd750a12c16a08bb7eb.html
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