Android Open Source - MultiLocation Network Location

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License

The source code is released under:

Apache License

Java Source Code

package com.example.owner;
/*www .j  a  v a 2 s  .c  o  m*/
import android.content.Context;
import android.content.SharedPreferences;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;


/**
 * ????????
 * @author Acer
 *
 */
class NetworkLocation extends LocationBase implements LocationListener{
  
  LocationService locationService;
  private Context context; 
  private Location location = null;
  
  boolean netFlag = false;
  
  private SharedPreferences sp = null;
  
  public NetworkLocation(Context  context){
    this.context = context;
    locationService = new LocationService(context);
    lagLngBean = new LagLng();
  }
  
  public boolean setCurrentLocation(){
    
    //?????????????
    if(checkNetWorkState()){
      if(location == null)
        location = locationService.getLocation(LocationManager.NETWORK_PROVIDER, this);
      if(location != null){
        lagLngBean.setLatitude(location.getLatitude());
        lagLngBean.setLongitude(location.getLongitude());
        lastSavingTime = getCurrentDate();
        StringBuffer buffer = new StringBuffer();
        buffer.append(locationServiceType+"#"+lastSavingTime+"#"+location.getLatitude()+"#"+location.getLongitude());
        saveCurrentLocation(buffer.toString());
        netFlag = true;
      }else{
        netFlag = false;
      }
    }
    return netFlag;
  }
  
  private void saveCurrentLocation(String locationString){
    sp = context.getSharedPreferences("Location", Context.MODE_PRIVATE);
    sp.edit().putString("NetWorkLocation", locationString).commit();
  }

  private  boolean checkNetWorkState(){
    boolean flag = false;
    try {
      // ?????????????????????????wi-fi??????????
      ConnectivityManager connectivity = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
      if (connectivity != null) {
        // ??????????????????
        NetworkInfo info = connectivity.getActiveNetworkInfo();
        if (info != null && info.isConnected()) {
          // ??????????????????
          if (info.getState() == NetworkInfo.State.CONNECTED)
          {
            if(info.getType() == ConnectivityManager.TYPE_WIFI){
              locationServiceType = 2;
            }else if(info.getType() == ConnectivityManager.TYPE_MOBILE){
              locationServiceType = 3;
            }
            flag = true;
          }
        }
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
    
    return flag;
  }
  
  @Override
  public void onLocationChanged(Location location) {
    this.location = location;
    System.out.println("NetWork?????==============================="+location);
    //???????????
    if(location != null && locationServiceType >0){
      StringBuffer buffer = new StringBuffer();
      buffer.append(locationServiceType+"#"+getCurrentDate()+"#"+location.getLatitude()+"#"+location.getLongitude());
      saveCurrentLocation(buffer.toString());
    }    
  }

  @Override
  public void onStatusChanged(String provider, int status, Bundle extras) {
    // TODO Auto-generated method stub
    
  }

  @Override
  public void onProviderEnabled(String provider) {
    // TODO Auto-generated method stub
    
  }

  @Override
  public void onProviderDisabled(String provider) {
    // TODO Auto-generated method stub
    
  }
}

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