Android Open Source - Self-Hosted-GPS-Tracker Self Hosted G P S Tracker Service

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From Project

Back to project page Self-Hosted-GPS-Tracker.

License

The source code is released under:

GNU General Public License

Java Source Code

package fr.herverenault.selfhostedgpstracker;
/*from ww  w . j av a  2 s. c o  m*/
import java.util.Calendar;

import android.app.IntentService;
import android.app.Notification;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.Log;

public class SelfHostedGPSTrackerService extends IntentService implements LocationListener {

  public static final String NOTIFICATION = "fr.herverenault.selfhostedgpstracker";

  public static boolean isRunning;
  public static Calendar runningSince;
  public Calendar stoppedOn;

  private final static String MY_TAG = "SelfHostedGPSTrackerService";
  
  private SharedPreferences preferences;
  private String urlText;
  private LocationManager locationManager;
  private int pref_gps_updates;
  private long latestUpdate;
  private int pref_max_run_time;

  public SelfHostedGPSTrackerService() {
    super("SelfHostedGPSTrackerService");
  }
  
  @Override
  public void onCreate() {
    super.onCreate();    
    Log.d(MY_TAG, "in onCreate, init GPS stuff");
    
    locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
      onProviderEnabled(LocationManager.GPS_PROVIDER);
    } else {
      onProviderDisabled(LocationManager.GPS_PROVIDER);
    }
    
    preferences = PreferenceManager.getDefaultSharedPreferences(this);
    SharedPreferences.Editor editor = preferences.edit();
    editor.putLong("stoppedOn", 0);
    editor.commit();
    pref_gps_updates = Integer.parseInt(preferences.getString("pref_gps_updates", "30")); // seconds
    pref_max_run_time = Integer.parseInt(preferences.getString("pref_max_run_time", "24")); // hours
    urlText = preferences.getString("URL", "");
    if (urlText.contains("?")) {
      urlText = urlText + "&"; 
    } else {
      urlText = urlText + "?";
    }
    
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, pref_gps_updates * 1000, 1, this);
  }

  @Override
  protected void onHandleIntent(Intent intent) {
    Log.d(MY_TAG, "in onHandleIntent, run for maximum time set in preferences");
    new SelfHostedGPSTrackerRequest().execute(urlText + "tracker=start");
        
    isRunning = true;
    runningSince = Calendar.getInstance();
    Intent i = new Intent(NOTIFICATION);
    sendBroadcast(i);
    
    Notification notification = new Notification(R.drawable.ic_notif, getText(R.string.toast_service_running), System.currentTimeMillis());
    Intent notificationIntent = new Intent(this, SelfHostedGPSTrackerActivity.class);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
    notification.setLatestEventInfo(this, getText(R.string.app_name), getText(R.string.toast_service_running), pendingIntent);
    startForeground(R.id.logo, notification);
        
    long endTime = System.currentTimeMillis() + pref_max_run_time*60*60*1000;
    while (System.currentTimeMillis() < endTime) {
      try {
        Thread.sleep(60*1000); // note: when device is sleeping, it may last up to 5 minutes or more
      } catch (Exception e) {
      }
    }
  }
  
  @Override
  public void onDestroy() {
    // (user clicked the stop button, or max run time has been reached)
    Log.d(MY_TAG, "in onDestroy, stop listening to the GPS");
    new SelfHostedGPSTrackerRequest().execute(urlText + "tracker=stop");
    
    locationManager.removeUpdates(this);
    
    isRunning = false;
    stoppedOn = Calendar.getInstance();
    
    SharedPreferences.Editor editor = preferences.edit();
    editor.putLong("stoppedOn", stoppedOn.getTimeInMillis());
    editor.commit();
    
    Intent intent = new Intent(NOTIFICATION);
    sendBroadcast(intent);
  }

  /* -------------- GPS stuff -------------- */

  @Override
  public void onLocationChanged(Location location) {
    Log.d(MY_TAG, "in onLocationChanged, latestUpdate == " + latestUpdate);
    
    if ((System.currentTimeMillis() - latestUpdate) < pref_gps_updates*1000) {
      return;
    } else {
      latestUpdate = System.currentTimeMillis();
    }
    
    new SelfHostedGPSTrackerRequest().execute(urlText + "lat=" + location.getLatitude() + "&lon=" + location.getLongitude());
  }

  @Override
  public void onProviderDisabled(String provider) {
  }

  @Override
  public void onProviderEnabled(String provider) {
  }

  @Override
  public void onStatusChanged(String provider, int status, Bundle extras) {
  }
}

Java Source Code List

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