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Android实现Service获取当前位置(GPS+基站)的方法

来源: 网络整理  作者: 佚名

需求详情:
1)、Service中每隔1秒执行一次定位操作(GPS+基站)
2)、定位的结果实时显示在界面上(要求得到经度、纬度)
技术支持:
1)、获取经纬度
通过GPS+基站获取经纬度,先通过GPS来获取,如果为空改用基站进行获取–>GPS+基站(基站获取支持联通、电信、移动)。
2)、实时获取经纬度
为了达到实时获取经纬度,需在后台启动获取经纬度的Service,然后把经纬度数据通过广播发送出去,在需要的地方进行广播注册(比如在Activity中注册广播,显示在界面中)–>涉及到Service+BroadcastReceiver+Activity+Thread等知识点。
备注:本文注重实践,如有看不懂的,先去巩固下知识点,可以去看看前面相关的几篇文章。
1、CellInfo实体类–>基站信息

package com.ljq.activity;
/**
* 基站信息
*
* @author jiqinlin
*
*/
public class CellInfo {
/** 基站id,用来找到基站的位置 */
private int cellId;
/** 移动国家码,共3位,中国为460,即imsi前3位 */
private String mobileCountryCode="460";
/** 移动网络码,共2位,在中国,移动的代码为00和02,联通的代码为01,电信的代码为03,即imsi第4~5位 */
private String mobileNetworkCode="0";
/** 地区区域码 */
private int locationAreaCode;
/** 信号类型[选 gsm|cdma|wcdma] */
private String radioType="";
public CellInfo() {
}
public int getCellId() {
return cellId;
}
public void setCellId(int cellId) {
this.cellId = cellId;
}
public String getMobileCountryCode() {
return mobileCountryCode;
}
public void setMobileCountryCode(String mobileCountryCode) {
this.mobileCountryCode = mobileCountryCode;
}
public String getMobileNetworkCode() {
return mobileNetworkCode;
}
public void setMobileNetworkCode(String mobileNetworkCode) {
this.mobileNetworkCode = mobileNetworkCode;
}
public int getLocationAreaCode() {
return locationAreaCode;
}
public void setLocationAreaCode(int locationAreaCode) {
this.locationAreaCode = locationAreaCode;
}
public String getRadioType() {
return radioType;
}
public void setRadioType(String radioType) {
this.radioType = radioType;
}
}
2、Gps类–>Gps封装类,用来获取经纬度

package com.ljq.activity;
import android.content.Context;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
public class Gps{
private Location location = null;
private LocationManager locationManager = null;
private Context context = null;
/**
* 初始化
*
* @param ctx
*/
public Gps(Context ctx) {
context=ctx;
locationManager=(LocationManager)context.getSystemService(Context.LOCATION_SERVICE);
location = locationManager.getLastKnownLocation(getProvider());
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 2000, 10, locationListener);
}
// 获取Location Provider
private String getProvider() {
// 构建位置查询条件
Criteria criteria = new Criteria();
// 查询精度:高
criteria.setAccuracy(Criteria.ACCURACY_FINE);
// 是否查询海拨:否
criteria.setAltitudeRequired(false);
// 是否查询方位角 : 否
criteria.setBearingRequired(false);
// 是否允许付费:是
criteria.setCostAllowed(true);
// 电量要求:低
criteria.setPowerRequirement(Criteria.POWER_LOW);
// 返回最合适的符合条件的provider,第2个参数为true说明 , 如果只有一个provider是有效的,则返回当前provider
return locationManager.getBestProvider(criteria, true);
}
private LocationListener locationListener = new LocationListener() {
// 位置发生改变后调用
public void onLocationChanged(Location l) {
  if(l!=null){
  location=l;
  }
}
// provider 被用户关闭后调用
public void onProviderDisabled(String provider) {
  location=null;
}
// provider 被用户开启后调用
public void onProviderEnabled(String provider) {
  Location l = locationManager.getLastKnownLocation(provider);
  if(l!=null){
  location=l;
  }
}
// provider 状态变化时调用
public void onStatusChanged(String provider, int status, Bundle extras) {
}
};
public Location getLocation(){
return location;
}
public void closeLocation(){
if(locationManager!=null){
  if(locationListener!=null){
  locationManager.removeUpdates(locationListener);
  locationListener=null;
  }
  locationManager=null;
}
}
}
3、GpsService服务类

package com.ljq.activity;
import java.util.ArrayList;
import android.app.Service;
import android.content.Intent;
import android.location.Location;
import android.os.IBinder;
import android.util.Log;
public class GpsService extends Service {
ArrayList<CellInfo> cellIds = null;
private Gps gps=null;
private boolean threadDisable=false;
private final static String TAG=GpsService.class.getSimpleName();
@Override
public void onCreate() {
super.onCreate();
gps=new Gps(GpsService.this);
cellIds=UtilTool.init(GpsService.this);
new Thread(new Runnable(){
  @Override
  public void run() {
  while (!threadDisable) {
   try {
   Thread.sleep(1000);
   } catch (InterruptedException e) {
   e.printStackTrace();
   }
   if(gps!=null){ //当结束服务时gps为空
   //获取经纬度
   Location location=gps.getLocation();
   //如果gps无法获取经纬度,改用基站定位获取
   if(location==null){
    Log.v(TAG, "gps location null");
    //2.根据基站信息获取经纬度
    try {
    location = UtilTool.callGear(GpsService.this, cellIds);
    } catch (Exception e) {
    location=null;
    e.printStackTrace();
    }
    if(location==null){
    Log.v(TAG, "cell location null");
    }
   }
   //发送广播
   Intent intent=new Intent();
   intent.putExtra("lat", location==null?"":location.getLatitude()+"");
   intent.putExtra("lon", location==null?"":location.getLongitude()+"");
   intent.setAction("com.ljq.activity.GpsService");
   sendBroadcast(intent);
   }
  }
  }
}).start();
}
@Override
public void onDestroy() {
threadDisable=true;
if(cellIds!=null&&cellIds.size()>0){
  cellIds=null;
}
if(gps!=null){
  gps.closeLocation();
  gps=null;
}
super.onDestroy();
}
@Override
public IBinder onBind(Intent arg0) {
return null;
}
}
4、GpsActivity–>在界面上实时显示经纬度数据

package com.ljq.activity;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
import android.widget.EditText;
import android.widget.Toast;
public class GpsActivity extends Activity {
private Double homeLat=26.0673834d; //宿舍纬度
private Double homeLon=119.3119936d; //宿舍经度
private EditText editText = null;
private MyReceiver receiver=null;
private final static String TAG=GpsActivity.class.getSimpleName();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
editText=(EditText)findViewById(R.id.editText);
//判断GPS是否可用
Log.i(TAG, UtilTool.isGpsEnabled((LocationManager)getSystemService(Context.LOCATION_SERVICE))+"");
if(!UtilTool.isGpsEnabled((LocationManager)getSystemService(Context.LOCATION_SERVICE))){
  Toast.makeText(this, "GSP当前已禁用,请在您的系统设置屏幕启动。", Toast.LENGTH_LONG).show();
  Intent callGPSSettingIntent = new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
  startActivity(callGPSSettingIntent);
      return;

//启动服务
startService(new Intent(this, GpsService.class));
//注册广播
receiver=new MyReceiver();
IntentFilter filter=new IntentFilter();
filter.addAction("com.ljq.activity.GpsService");
registerReceiver(receiver, filter);
}
//获取广播数据
private class MyReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
  Bundle bundle=intent.getExtras();  
  String lon=bundle.getString("lon"); 
  String lat=bundle.getString("lat");
  if(lon!=null&&!"".equals(lon)&&lat!=null&&!"".equals(lat)){
  double distance=getDistance(Double.parseDouble(lat),
   Double.parseDouble(lon), homeLat, homeLon);
  editText.setText("目前经纬度\n经度:"+lon+"\n纬度:"+lat+"\n离宿舍距离:"+java.lang.Math.abs(distance));
  }else{
  editText.setText("目前经纬度\n经度:"+lon+"\n纬度:"+lat);
  }
}
}
@Override
protected void onDestroy() {
//注销服务
unregisterReceiver(receiver);
//结束服务,如果想让服务一直运行就注销此句
stopService(new Intent(this, GpsService.class));
super.onDestroy();
}
/**
* 把经纬度换算成距离
*
* @param lat1 开始纬度
* @param lon1 开始经度
* @param lat2 结束纬度
* @param lon2 结束经度
* @return
*/
private double getDistance(double lat1, double lon1, double lat2, double lon2) {
float[] results = new float[1];
Location.distanceBetween(lat1, lon1, lat2, lon2, results);
return results[0];
}
}
5、UtilTool–>工具类

package com.ljq.activity;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import java.util.Locale;
import org.apache.http.client.ClientProtocolException;
import org.json.JSONException;
import org.json.JSONObject;
import android.content.Context;
import android.location.Location;
import android.location.LocationManager;
import android.telephony.NeighboringCellInfo;
import android.telephony.TelephonyManager;
import android.telephony.cdma.CdmaCellLocation;
import android.telephony.gsm.GsmCellLocation;
import android.util.Log;
import android.widget.Toast;
public class UtilTool {
public static boolean isGpsEnabled(LocationManager locationManager) {
boolean isOpenGPS = locationManager.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER);
boolean isOpenNetwork = locationManager.isProviderEnabled(android.location.LocationManager.NETWORK_PROVIDER);
if (isOpenGPS || isOpenNetwork) {
  return true;
}
return false;
}
  /**
   * 根据基站信息获取经纬度
   *
   * 原理向http://www.google.com/loc/json发送http的post请求,根据google返回的结果获取经纬度
   *
   * @param cellIds
   * @return
   * @throws Exception
   */
  public static Location callGear(Context ctx, ArrayList<CellInfo> cellIds) throws Exception {
   String result="";
   JSONObject data=null;
   if (cellIds == null||cellIds.size()==0) {
   UtilTool.alert(ctx, "cell request param null");
   return null;
   };
try {
  result = UtilTool.getResponseResult(ctx, "http://www.google.com/loc/json", cellIds);
  if(result.length() <= 1)
  return null;
  data = new JSONObject(result);
  data = (JSONObject) data.get("location");
  Location loc = new Location(LocationManager.NETWORK_PROVIDER);
  loc.setLatitude((Double) data.get("latitude"));
  loc.setLongitude((Double) data.get("longitude"));
  loc.setAccuracy(Float.parseFloat(data.get("accuracy").toString()));
  loc.setTime(UtilTool.getUTCTime());
  return loc;
} catch (JSONException e) {
  return null;
} catch (UnsupportedEncodingException e) {
  e.printStackTrace();
} catch (ClientProtocolException e) {
  e.printStackTrace();
} catch (IOException e) {
  e.printStackTrace();
}
return null;
}
  /**
   * 接收Google返回的数据格式
   *
* 出参:{"location":{"latitude":26.0673834,"longitude":119.3119936,
*    "address":{"country":"中国","country_code":"CN","region":"福建省","city":"福州市",
*    "street":"五一中路","street_number":"128号"},"accuracy":935.0},
*    "access_token":"2:xiU8YrSifFHUAvRJ:aj9k70VJMRWo_9_G"}
* 请求路径:http://maps.google.cn/maps/geo?key=abcdefg&q=26.0673834,119.3119936
   *
   * @param cellIds
   * @return
   * @throws UnsupportedEncodingException
   * @throws MalformedURLException
   * @throws IOException
   * @throws ProtocolException
   * @throws Exception
   */
public static String getResponseResult(Context ctx,String path, ArrayList<CellInfo> cellInfos)
  throws UnsupportedEncodingException, MalformedURLException,
  IOException, ProtocolException, Exception {
String result="";
Log.i(ctx.getApplicationContext().getClass().getSimpleName(),
  "in param: "+getRequestParams(cellInfos));
InputStream inStream=UtilTool.sendPostRequest(path,
  getRequestParams(cellInfos), "UTF-8");
if(inStream!=null){
  byte[] datas=UtilTool.readInputStream(inStream);
  if(datas!=null&&datas.length>0){
  result=new String(datas, "UTF-8");
  //Log.i(ctx.getClass().getSimpleName(), "receive result:"+result);//服务器返回的结果信息
  Log.i(ctx.getApplicationContext().getClass().getSimpleName(),
    "google cell receive data result:"+result);
  }else{
  Log.i(ctx.getApplicationContext().getClass().getSimpleName(),
   "google cell receive data null");
  }
}else{
  Log.i(ctx.getApplicationContext().getClass().getSimpleName(),
    "google cell receive inStream null");
}
return result;
}
/**
* 拼装json请求参数,拼装基站信息
*
* 入参:{'version': '1.1.0','host': 'maps.google.com','home_mobile_country_code': 460,
*    'home_mobile_network_code': 14136,'radio_type': 'cdma','request_address': true,
*    'address_language': 'zh_CN','cell_towers':[{'cell_id': '12835','location_area_code': 6,
*    'mobile_country_code': 460,'mobile_network_code': 14136,'age': 0}]}
* @param cellInfos
* @return
*/
public static String getRequestParams(List<CellInfo> cellInfos){
StringBuffer sb=new StringBuffer("");
sb.append("{");
if(cellInfos!=null&&cellInfos.size()>0){
  sb.append("'version': '1.1.0',"); //google api 版本[必]
  sb.append("'host': 'maps.google.com',"); //服务器域名[必]
  sb.append("'home_mobile_country_code': "+cellInfos.get(0).getMobileCountryCode()+","); //移动用户所属国家代号[选 中国460]
  sb.append("'home_mobile_network_code': "+cellInfos.get(0).getMobileNetworkCode()+","); //移动系统号码[默认0]
  sb.append("'radio_type': '"+cellInfos.get(0).getRadioType()+"',"); //信号类型[选 gsm|cdma|wcdma]
  sb.append("'request_address': true,"); //是否返回数据[必]
  sb.append("'address_language': 'zh_CN',"); //反馈数据语言[选 中国 zh_CN]
  sb.append("'cell_towers':["); //移动基站参数对象[必]
  for(CellInfo cellInfo:cellInfos){
  sb.append("{");
  sb.append("'cell_id': '"+cellInfo.getCellId()+"',"); //基站ID[必]
  sb.append("'location_area_code': "+cellInfo.getLocationAreaCode()+","); //地区区域码[必]
  sb.append("'mobile_country_code': "+cellInfo.getMobileCountryCode()+",");
  sb.append("'mobile_network_code': "+cellInfo.getMobileNetworkCode()+",");
  sb.append("'age': 0"); //使用好久的数据库[选 默认0表示使用最新的数据库]
  sb.append("},");
  }
  sb.deleteCharAt(sb.length()-1);
  sb.append("]");
}
sb.append("}");
return sb.toString();
}
/**
* 获取UTC时间
*
* UTC + 时区差 = 本地时间(北京为东八区)
*
* @return
*/
public static long getUTCTime() {
   //取得本地时间
    Calendar cal = Calendar.getInstance(Locale.CHINA);
    //取得时间偏移量
    int zoneOffset = cal.get(java.util.Calendar.ZONE_OFFSET);
    //取得夏令时差
    int dstOffset = cal.get(java.util.Calendar.DST_OFFSET);
    //从本地时间里扣除这些差量,即可以取得UTC时间
    cal.add(java.util.Calendar.MILLISECOND, -(zoneOffset + dstOffset));
    return cal.getTimeInMillis();
  }
/**
* 初始化,记得放在onCreate()方法里初始化,获取基站信息
*
* @return
*/
public static ArrayList<CellInfo> init(Context ctx) {
ArrayList<CellInfo> cellInfos = new ArrayList<CellInfo>();
TelephonyManager tm = (TelephonyManager) ctx.getSystemService(Context.TELEPHONY_SERVICE);
//网络制式
int type = tm.getNetworkType();
   /**
   * 获取SIM卡的IMSI码
   * SIM卡唯一标识:IMSI 国际移动用户识别码(IMSI:International Mobile Subscriber Identification Number)是区别移动用户的标志,
   * 储存在SIM卡中,可用于区别移动用户的有效信息。IMSI由MCC、MNC、MSIN组成,其中MCC为移动国家号码,由3位数字组成,
   * 唯一地识别移动客户所属的国家,我国为460;MNC为网络id,由2位数字组成,
   * 用于识别移动客户所归属的移动网络,中国移动为00,中国联通为01,中国电信为03;MSIN为移动客户识别码,采用等长11位数字构成。
   * 唯一地识别国内GSM移动通信网中移动客户。所以要区分是移动还是联通,只需取得SIM卡中的MNC字段即可
  */
String imsi = tm.getSubscriberId();
alert(ctx, "imsi: "+imsi);
//为了区分移动、联通还是电信,推荐使用imsi来判断(万不得己的情况下用getNetworkType()判断,比如imsi为空时)
if(imsi!=null&&!"".equals(imsi)){
  alert(ctx, "imsi");
  if (imsi.startsWith("46000") || imsi.startsWith("46002")) {// 因为移动网络编号46000下的IMSI已经用完,所以虚拟了一个46002编号,134/159号段使用了此编号
  // 中国移动
  mobile(cellInfos, tm);
  } else if (imsi.startsWith("46001")) {
  // 中国联通
  union(cellInfos, tm);
  } else if (imsi.startsWith("46003")) {
  // 中国电信
  cdma(cellInfos, tm);
  } 
}else{
  alert(ctx, "type");
  // 在中国,联通的3G为UMTS或HSDPA,电信的3G为EVDO
  // 在中国,移动的2G是EGDE,联通的2G为GPRS,电信的2G为CDMA
  // String OperatorName = tm.getNetworkOperatorName();
  //中国电信
  if (type == TelephonyManager.NETWORK_TYPE_EVDO_A
   || type == TelephonyManager.NETWORK_TYPE_EVDO_0
   || type == TelephonyManager.NETWORK_TYPE_CDMA
   || type ==TelephonyManager.NETWORK_TYPE_1xRTT){
  cdma(cellInfos, tm);
  }
  //移动(EDGE(2.75G)是GPRS(2.5G)的升级版,速度比GPRS要快。目前移动基本在国内升级普及EDGE,联通则在大城市部署EDGE。)
  else if(type == TelephonyManager.NETWORK_TYPE_EDGE
   || type == TelephonyManager.NETWORK_TYPE_GPRS ){
  mobile(cellInfos, tm);
  }
  //联通(EDGE(2.75G)是GPRS(2.5G)的升级版,速度比GPRS要快。目前移动基本在国内升级普及EDGE,联通则在大城市部署EDGE。)
  else if(type == TelephonyManager.NETWORK_TYPE_GPRS
   ||type == TelephonyManager.NETWORK_TYPE_EDGE
   ||type == TelephonyManager.NETWORK_TYPE_UMTS
   ||type == TelephonyManager.NETWORK_TYPE_HSDPA){
  union(cellInfos, tm);
  }
}
return cellInfos;
}
/**
* 电信
*
* @param cellInfos
* @param tm
*/
private static void cdma(ArrayList<CellInfo> cellInfos, TelephonyManager tm) {
CdmaCellLocation location = (CdmaCellLocation) tm.getCellLocation();
CellInfo info = new CellInfo();
info.setCellId(location.getBaseStationId());
info.setLocationAreaCode(location.getNetworkId());
info.setMobileNetworkCode(String.valueOf(location.getSystemId()));
info.setMobileCountryCode(tm.getNetworkOperator().substring(0, 3));
info.setRadioType("cdma");
cellInfos.add(info);
//前面获取到的都是单个基站的信息,接下来再获取周围邻近基站信息以辅助通过基站定位的精准性
// 获得邻近基站信息
List<NeighboringCellInfo> list = tm.getNeighboringCellInfo();
int size = list.size();
for (int i = 0; i < size; i++) {
  CellInfo cell = new CellInfo();
  cell.setCellId(list.get(i).getCid());
  cell.setLocationAreaCode(location.getNetworkId());
  cell.setMobileNetworkCode(String.valueOf(location.getSystemId()));
  cell.setMobileCountryCode(tm.getNetworkOperator().substring(0, 3));
  cell.setRadioType("cdma");
  cellInfos.add(cell);
}
}
/**
* 移动
*
* @param cellInfos
* @param tm
*/
private static void mobile(ArrayList<CellInfo> cellInfos,
  TelephonyManager tm) {
GsmCellLocation location = (GsmCellLocation)tm.getCellLocation();
CellInfo info = new CellInfo();
info.setCellId(location.getCid());
info.setLocationAreaCode(location.getLac());
info.setMobileNetworkCode(tm.getNetworkOperator().substring(3, 5));
info.setMobileCountryCode(tm.getNetworkOperator().substring(0, 3));
info.setRadioType("gsm");
cellInfos.add(info);
//前面获取到的都是单个基站的信息,接下来再获取周围邻近基站信息以辅助通过基站定位的精准性
// 获得邻近基站信息
List<NeighboringCellInfo> list = tm.getNeighboringCellInfo();
int size = list.size();
for (int i = 0; i < size; i++) {
  CellInfo cell = new CellInfo();
  cell.setCellId(list.get(i).getCid());
  cell.setLocationAreaCode(location.getLac());
  cell.setMobileNetworkCode(tm.getNetworkOperator().substring(3, 5));
  cell.setMobileCountryCode(tm.getNetworkOperator().substring(0, 3));
  cell.setRadioType("gsm");
  cellInfos.add(cell);
}
}
/**
* 联通
*
* @param cellInfos
* @param tm
*/
private static void union(ArrayList<CellInfo> cellInfos, TelephonyManager tm) {
GsmCellLocation location = (GsmCellLocation)tm.getCellLocation();
CellInfo info = new CellInfo();
//经过测试,获取联通数据以下两行必须去掉,否则会出现错误,错误类型为JSON Parsing Error
//info.setMobileNetworkCode(tm.getNetworkOperator().substring(3, 5));
//info.setMobileCountryCode(tm.getNetworkOperator().substring(0, 3));
info.setCellId(location.getCid());
info.setLocationAreaCode(location.getLac());
info.setMobileNetworkCode("");
info.setMobileCountryCode("");
info.setRadioType("gsm");
cellInfos.add(info);
//前面获取到的都是单个基站的信息,接下来再获取周围邻近基站信息以辅助通过基站定位的精准性
// 获得邻近基站信息
List<NeighboringCellInfo> list = tm.getNeighboringCellInfo();
int size = list.size();
for (int i = 0; i < size; i++) {
  CellInfo cell = new CellInfo();
  cell.setCellId(list.get(i).getCid());
  cell.setLocationAreaCode(location.getLac());
  cell.setMobileNetworkCode("");
  cell.setMobileCountryCode("");
  cell.setRadioType("gsm");
  cellInfos.add(cell);
}
}
/**
* 提示
*
* @param ctx
* @param msg
*/
public static void alert(Context ctx,String msg){
Toast.makeText(ctx, msg, Toast.LENGTH_LONG).show();
}
/**
* 发送post请求,返回输入流
*
* @param path 访问路径
* @param params json数据格式
* @param encoding 编码
* @return
* @throws UnsupportedEncodingException
* @throws MalformedURLException
* @throws IOException
* @throws ProtocolException
*/
public static InputStream sendPostRequest(String path, String params, String encoding)
throws UnsupportedEncodingException, MalformedURLException,
IOException, ProtocolException {
byte[] data = params.getBytes(encoding);
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.setRequestMethod("POST");
conn.setDoOutput(true);
//application/x-javascript text/xml->xml数据 application/x-javascript->json对象 application/x-www-form-urlencoded->表单数据
conn.setRequestProperty("Content-Type", "application/x-javascript; charset="+ encoding);
conn.setRequestProperty("Content-Length", String.valueOf(data.length));
conn.setConnectTimeout(5 * 1000);
OutputStream outStream = conn.getOutputStream();
outStream.write(data);
outStream.flush();
outStream.close();
if(conn.getResponseCode()==200)
  return conn.getInputStream();
return null;
}
/**
* 发送get请求
*
* @param path 请求路径
* @return
* @throws Exception
*/
public static String sendGetRequest(String path) throws Exception {
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setConnectTimeout(5 * 1000);
conn.setRequestMethod("GET");
InputStream inStream = conn.getInputStream();
byte[] data = readInputStream(inStream);
String result = new String(data, "UTF-8");
return result;
}
/**
* 从输入流中读取数据
* @param inStream
* @return
* @throws Exception
*/
public static byte[] readInputStream(InputStream inStream) throws Exception{
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
while( (len = inStream.read(buffer)) !=-1 ){
  outStream.write(buffer, 0, len);
}
byte[] data = outStream.toByteArray();//网页的二进制数据
outStream.close();
inStream.close();
return data;
}
}
6、main.xml–>布局文件
 
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
  <EditText android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:cursorVisible="false"
    android:editable="false"
    android:id="@+id/editText"/>
</LinearLayout>
7、清单文件
 
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ljq.activity" android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon"
android:label="@string/app_name">
<activity android:name=".GpsActivity"
  android:label="@string/app_name">
  <intent-filter>
  <action android:name="android.intent.action.MAIN" />
  <category
   android:name="android.intent.category.LAUNCHER" />
  </intent-filter>
</activity>
<service android:label="GPS服务" android:name=".GpsService" />
</application>
<uses-sdk android:minSdkVersion="7" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
</manifest>
效果如下:


Tags:基站 位置 方法
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