Android Open Source - Common-Alerting-Protocol-Compliant-Emergency-Warning-App-For-Android-Using-AMQP Send Location Update Service

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License

The source code is released under:

This is free and unencumbered software released into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a co...

Java Source Code

package in.ac.iitd.cse.iuatc.ews;
//from ww  w  .j ava  2  s  .c  o  m
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import android.app.Service;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.IBinder;
import android.preference.PreferenceManager;
import android.util.Log;

public class SendLocationUpdateService extends Service {

  private static final String TAG = "Location";

  private LocationManager locationManager;

  private LocationListener locationListener = new LocationListener() {
    @Override
    public void onLocationChanged(final Location location) {
      Log.d(TAG,"Location recieved");
      locationManager.removeUpdates(this);
      Thread thread = new Thread() {
        @Override
        public void run() {
          SendLocationUpdate(location);
        }
      };
      thread.start();
    }

    @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

    }

  };  

  @Override
  public IBinder onBind(Intent intent) {
    // TODO Auto-generated method stub
    return null;
  }

  @Override
  public int onStartCommand(Intent intent, int flags, int startId) {  
    Log.d(TAG,"service started");
    locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0,locationListener);
    /*final Location location = locationManager.getLastKnownLocation("gps");
    Thread thread = new Thread() {
      @Override
      public void run() {
        SendLocationUpdate(location);
      }
    };
    thread.start();*/
    return START_STICKY;    
  }


  private void SendLocationUpdate(Location location) {
    if(location==null) {
      stopSelf();  
      return;
    }
    SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
    String lastLat = sharedPreferences.getString("lastlat",""+location.getLatitude());
    String lastLng = sharedPreferences.getString("lastlng",""+location.getLongitude());
    Editor editor = sharedPreferences.edit();
    editor.putString("lastlat", ""+location.getLatitude());
    editor.putString("lastlng", ""+location.getLongitude());
    editor.commit();
    
    Uri.Builder b = Uri.parse(ServerParameters.TOPIC_MANAGER_URI).buildUpon();
    Uri uri =  b.appendQueryParameter("lastlat", lastLat)
      .appendQueryParameter("lastlng", lastLng)
      .appendQueryParameter("lat", ""+location.getLatitude())
      .appendQueryParameter("lng", ""+location.getLongitude())
      .appendQueryParameter("queue", Installation.id(this))
      .build();
    
    try {
      HttpClient httpclient = new DefaultHttpClient();
      httpclient.execute(new HttpGet(uri.toString()));
      Log.d(TAG,"Location sent");
    } catch (Exception e) {
      Log.e(TAG, "\n\n***** unable to reach server *****\n\n", e);
    }
    stopSelf();
  }

}

Java Source Code List

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