Android使用网络获取定位的方法

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:tools="http://schemas.android.com/tools"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:paddingBottom="@dimen/activity_vertical_margin"  android:paddingLeft="@dimen/activity_horizontal_margin"  android:paddingRight="@dimen/activity_horizontal_margin"  android:paddingTop="@dimen/activity_vertical_margin"  tools:context=".MainActivity" >   <TextView    android:id="@+id/text"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="正在定位。。。" /> </RelativeLayout>

package com.sc.demo.common;/** * 公共常量 * @author wxy * */public class Common {  public static final String LOCATION = "location"; public static final String LOCATION_ACTION = "locationAction";}

package com.sc.demo.locate; import com.sc.demo.common.Common; import android.app.Service;import android.content.Intent;import android.location.Location;import android.location.LocationListener;import android.location.LocationManager;import android.os.Bundle;import android.os.IBinder;import android.util.Log;import android.widget.Toast; /** * 定位服务 * @author wxy * */public class LocationSvc extends Service implements LocationListener {  private LocationManager locationManager;  @Override public IBinder onBind(Intent intent) { return null; }  @Override public void onCreate() { locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); }  @Override public void onStart(Intent intent, int startId) { if (locationManager.getProvider(LocationManager.NETWORK_PROVIDER) != null) locationManager  .requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0,   this); else if (locationManager.getProvider(LocationManager.GPS_PROVIDER) != null) locationManager  .requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0,   this); else Toast.makeText(this, "无法定位", Toast.LENGTH_SHORT).show(); }  @Override public boolean stopService(Intent name) { return super.stopService(name); }  @Override public void onLocationChanged(Location location) {  //通知Activity Intent intent = new Intent(); intent.setAction(Common.LOCATION_ACTION); intent.putExtra(Common.LOCATION, location.toString()); sendBroadcast(intent);  // 如果只是需要定位一次，这里就移除监听，停掉服务。如果要进行实时定位，可以在退出应用或者其他时刻停掉定位服务。 locationManager.removeUpdates(this); stopSelf(); }  @Override public void onProviderDisabled(String provider) { }  @Override public void onProviderEnabled(String provider) { }  @Override public void onStatusChanged(String provider, int status, Bundle extras) { } }

package com.sc.demo; import java.io.IOException;import java.util.List; import com.sc.demo.common.Common;import com.sc.demo.locate.LocationSvc; import android.location.Address;import android.location.Geocoder;import android.os.Bundle;import android.util.Log;import android.widget.TextView;import android.app.Activity;import android.app.ProgressDialog;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter; public class MainActivity extends Activity {  private TextView text; private ProgressDialog dialog;  @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); text = (TextView) findViewById(R.id.text);  // 注册广播 IntentFilter filter = new IntentFilter(); filter.addAction(Common.LOCATION_ACTION); this.registerReceiver(new LocationBroadcastReceiver(), filter);  // 启动服务 Intent intent = new Intent(); intent.setClass(this, LocationSvc.class); startService(intent);  // 等待提示 dialog = new ProgressDialog(this); dialog.setMessage("正在定位..."); dialog.setCancelable(true); dialog.show(); }  private class LocationBroadcastReceiver extends BroadcastReceiver {  @Override public void onReceive(Context context, Intent intent) {  if (!intent.getAction().equals(Common.LOCATION_ACTION))  return;  String locationInfo = intent.getStringExtra(Common.LOCATION);  double latitude = Double                 //截取经纬度转换为double型   .parseDouble(locationInfo.substring(17, 26));  double longitude = Double.parseDouble(locationInfo   .substring(27, 37));  text.setText(getaddress(latitude, longitude));  dialog.dismiss();  MainActivity.this.unregisterReceiver(this);// 不需要时注销 }  public String getaddress(double latitude, double longitude) {  String cityName = "";  List<Address> addList = null;  Geocoder ge = new Geocoder(MainActivity.this);  try {  addList = ge.getFromLocation(latitude, longitude, 1);  } catch (IOException e) {  e.printStackTrace();  }  if (addList != null && addList.size() > 0) {  for (int i = 0; i < addList.size(); i++) {   Address ad = addList.get(i);   cityName += ad.getCountryName() + ";" + ad.getLocality();  }  }  Log.i("wxy", "city:" + cityName);  return cityName; } }}

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"  package="com.sc.demo"  android:versionCode="1"  android:versionName="1.0" >   <uses-sdk    android:minSdkVersion="8"    android:targetSdkVersion="18" />   <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />  <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />   <application    android:allowBackup="true"    android:icon="@drawable/ic_launcher"    android:label="@string/app_name"    android:theme="@style/AppTheme" >    <activity      android:name="com.sc.demo.MainActivity"      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:name=".locate.LocationSvc" />  </application> </manifest>