Android Open Source - CopresenceDataCollector Gps Worker

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License

The source code is released under:
Copyright (c) 2014, Xiang Gao All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Re...
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Java Source Code

package org.sesy.coco.datacollector;
/*  w  ww .ja  v a  2  s . c  om*/
import java.util.Iterator;

import org.apache.log4j.Level;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.sesy.coco.datacollector.database.Entry;
import org.sesy.coco.datacollector.log.ConfigureLog4J;

import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.location.GpsSatellite;
import android.location.GpsStatus;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.os.IBinder;
import android.os.SystemClock;
import android.util.Log;

public class GpsWorker extends Service implements GpsStatus.Listener, LocationListener{

  private LocationManager locMgr;
  private GpsStatus gpsStatus;
  private CountDownTimer timer;
  //private DBHelper db;
  //private int gt, ob;
  Logger log;
  
  @Override
  public void onCreate(){
    super.onCreate();
    
    log = Logger.getLogger(GpsWorker.class);  
        ConfigureLog4J.configure(this);  
        LogManager.getRootLogger().setLevel((Level)Level.DEBUG);   
        //log.info("onCreate");    
        
        
  }
  
  @Override
  public int onStartCommand(Intent intent, int flags, int startId) {
    
    WorkerService.gpsTask = true;
    //gt = intent.getIntExtra("gt", 0);
    //ob = intent.getIntExtra("ob", 0);
    //db = new DBHelper(this);
    //db.clear();
     WorkerService.gpsSatList.clear();
     WorkerService.gpsLocList.clear();
     
    //Entry ecobj = new Entry();
    //ecobj.setTS(SystemClock.elapsedRealtime() - WorkerService.metaTS);
    //ecobj.setGT(gt);
    //ecobj.setOB(ob);
    //ecobj.setMT(Constants.STATUS_SENSOR_GPS);
    //Gson gson = new Gson();
    //String meta = gson.toJson(ecobj);     
    //WorkerService.gpsSatList.add(ecobj);
    //db.addEntry(ecobj);
     
    locMgr = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    
    
    timer = new CountDownTimer(120*1000, 1000) {

      @Override
      public void onFinish() {
        // TODO Auto-generated method stub
        locMgr.removeGpsStatusListener(GpsWorker.this);
        locMgr.removeUpdates(GpsWorker.this);
        log.info("Gps scan finished");
        WorkerService.gpsTaskDone = true;
        stopSelf();
      }

      @Override
      public void onTick(long millisUntilFinished) {
        // TODO Auto-generated method stub
        
      }
      
    };
    
    locMgr.addGpsStatusListener(this);
    locMgr.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 5, this);
    timer.start();
    log.info("Gps scan started for 180 sec");
    
    return START_NOT_STICKY;    
  }
  
  @Override
  public void onLocationChanged(Location location) {
    // TODO Auto-generated method stub    
    Log.i("subtask", "gps location updated.");
    long ts = SystemClock.elapsedRealtime() - WorkerService.metaTS;    
    String corrdinates = String.valueOf(location.getLongitude())+"#"+String.valueOf(location.getLatitude())+"#"+String.valueOf(location.getAltitude());
    String accuracy = String.valueOf(location.getAccuracy());
    Entry eobj = new Entry();
    //eobj.setOB(ob);
        eobj.setTS(ts);
        //eobj.setGT(gt);
    eobj.setMT(Constants.STATUS_SENSOR_GPSCOORD);
    //eobj.setACC(AccListener.acc);
    eobj.setFP(corrdinates+"#"+accuracy);
    //eobj.setFPP(accuracy);
    //Gson gson = new Gson();
        //String gpsLoc = gson.toJson(eobj);
        WorkerService.gpsLocList.add(eobj);
  }

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

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

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

  }

  @Override
  public void onGpsStatusChanged(int event) {
    // TODO Auto-generated method stub
    Log.i("subtask", "gps prns updated.");
    long ts = SystemClock.elapsedRealtime() - WorkerService.metaTS;
    gpsStatus =locMgr.getGpsStatus(null);
    if(gpsStatus != null && GpsStatus.GPS_EVENT_SATELLITE_STATUS == event){      
      //elist = new ArrayList<Entry>();
      String prns = "", snrs = "", fp = "";
      Iterable<GpsSatellite> iSatellites =gpsStatus.getSatellites();
            Iterator<GpsSatellite> it = iSatellites.iterator();
            while(it.hasNext()){
                if(!(prns.length()==0) && !(snrs.length()==0)){
                  prns += ",";
                  snrs += ",";                  
                }
                GpsSatellite oSat = (GpsSatellite) it.next();              
                prns += String.valueOf(oSat.getPrn());
                snrs += String.valueOf(oSat.getSnr());        
            }
            //if(!(prns.length()==0) && !(snrs.length()==0)){
              fp = prns + "#" + snrs;
              Entry eobj = new Entry();
                //eobj.setOB(ob);
                eobj.setTS(ts);
                //eobj.setGT(gt);
          eobj.setMT(Constants.STATUS_SENSOR_GPS);
          //eobj.setACC(AccListener.acc);
          eobj.setFP(fp);
          //eobj.setFPP(snrs);
                Log.i("subtask", "gps_prns: " + prns);
                Log.i("subtask", "gps_snrs: " + snrs);
                //Gson gson = new Gson();
                //String gpsSat = gson.toJson(eobj);
                WorkerService.gpsSatList.add(eobj);
                //new gpsTask().execute(eobj);
            //}
            
    }
  }
  
  /*private class gpsTask extends AsyncTask<Entry, Void, Void> {
    
    @Override
        protected Void doInBackground(Entry... eobjs) {
          try {
              if(db != null)
                db.addEntry(eobjs[0]);
              
            } catch (Exception e) {
              e.printStackTrace();
            }
            return null;
        }

        @Override
        protected void onPostExecute(final Void unused) {
          
        }
  }*/

  @Override
  public IBinder onBind(Intent arg0) {
    // TODO Auto-generated method stub
    return null;
  }

}
Java Source Code List
