Android Service获取当前位置GPS+基站.docx

1、Android Service获取当前位置GPS+基站Android Service获取当前位置(GPS+基站)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+Br

2、oadcastReceiver+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，可以去看看我前面写的几篇文章。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

3、为00和02，联通的代码为01，电信的代码为03，即imsi第45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 getMobileCou

4、ntryCode() return mobileCountryCode;public void setMobileCountryCode(String mobileCountryCode) this.mobileCountryCode = mobileCountryCode;public String getMobileNetworkCode() return mobileNetworkCode;public void setMobileNetworkCode(String mobileNetworkCode) this.mobileNetworkCode = mobileNetworkCod

5、e;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 co

6、m.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 Gpsprivate Location location = null;private LocationManager locationM

7、anager = 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(LocationMana

8、ger.GPS_PROVIDER, 2000, 10, locationListener);/ 获取Location Providerprivate 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cr

9、iteria.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providerreturn locationManager.getBestProvider(criteria, true);private LocationListener locationListener = new LocationListener() / 位置发生改变后调用public void o

10、nLocationChanged(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pu

11、blic 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

12、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 cellIds = null;private Gps gps=null;private boolean thread

13、Disable=false; private final static String TAG=GpsService.class.getSimpleName();Overridepublic void onCreate() super.onCreate();gps=new Gps(GpsService.this);cellIds=UtilTool.init(GpsService.this);new Thread(new Runnable()Overridepublic void run() while (!threadDisable) try Thread.sleep(1000); catch

14、(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.printSt

15、ackTrace();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();Over

16、ridepublic void onDestroy() threadDisable=true;if(cellIds!=null&cellIds.size()0)cellIds=null;if(gps!=null)gps.closeLocation();gps=null;super.onDestroy();Overridepublic 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 androi

17、d.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.

18、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();Overridepublic void onCreate(Bundle

19、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(Conte

20、xt.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receiv

21、er=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 BroadcastReceiverOverridepublic void onReceive(Context context, Intent intent) Bundle bundle=intent.getExtras(); String

22、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);elseeditText.set

23、Text(目前经纬度n经度：+lon+n纬度：+lat);Overrideprotected 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 getDistan

24、ce(double lat1, double lon1, double lat2, double lon2) float results = new float1;Location.distanceBetween(lat1, lon1, lat2, lon2, results);return results0; 5、UtilTool工具类package com.ljq.activity;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;import java.io

25、.OutputStream;import java.io.UnsupportedEncodingException;import .HttpURLConnection;import .MalformedURLException;import .ProtocolException;import .URL;import java.util.ArrayList;import java.util.Calendar;import java.util.List;import java.util.Locale;import org.apache.http.client.ClientProtocolExcep

26、tion;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;

27、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;