title: detect if the user switched to NO in location services
body: <p>I have a code which redirects to settings if GPS or network is not enabled.The problem is that I want to either programmatically enforce location service when the alert dialog detects that GPS is not enabled or detect the option user has selected in location services and then redirect back to the calling activity.Also I want the location to be checked every 10 seconds until the particular activity is on.please help me</p>
  
  <p>My GPS Checking method</p>
  
  <pre><code> public void setGPSLocation()
  {
      GPSTracker gps = new GPSTracker(FormBuilderActivity.this);
      // check if GPS enabled
      if(gps.canGetLocation()){
          latitude_loc = gps.getLatitude();
          longitude_loc = gps.getLongitude();
  
          // \n is for new line
          // Toast.makeText(getApplicationContext(), "Your Location is - \nLat: " + latitude + "\nLong: " + longitude, Toast.LENGTH_LONG).show();
      }else{
          latitude_loc = 0.00;
          longitude_loc = 0.00;
          // can't get location
          // GPS or Network is not enabled
          // Ask user to enable GPS/network in settings
          gps.showSettingsAlert();
  
      }
  }
  </code></pre>
  
  <p>GPSTracker.class</p>
  
  <pre><code>public class GPSTracker extends Service implements LocationListener {
  private final Context mContext;
  // flag for GPS status
  boolean isGPSEnabled = false;
  // flag for network status
  boolean isNetworkEnabled = false;
  // flag for GPS status
  boolean canGetLocation = false;
  Location location; // location
  double latitude; // latitude
  double longitude; // longitude
  // The minimum distance to change Updates in meters
  private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
  // The minimum time between updates in milliseconds
  private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute
  // Declaring a Location Manager
  protected LocationManager locationManager;
  public GPSTracker(Context context) {
      this.mContext = context;
      getLocation();
  }
  public Location getLocation() {
      try {
          locationManager = (LocationManager) mContext
                  .getSystemService(LOCATION_SERVICE);
  
          // getting GPS status
          isGPSEnabled = locationManager
                  .isProviderEnabled(LocationManager.GPS_PROVIDER);
          // getting network status
          isNetworkEnabled = locationManager
                  .isProviderEnabled(LocationManager.NETWORK_PROVIDER);
          if (!isGPSEnabled &amp;&amp; !isNetworkEnabled) {
              // no network provider is enabled
          } else {
              this.canGetLocation = true;
              if (isNetworkEnabled) {
                  locationManager.requestLocationUpdates(
                          LocationManager.NETWORK_PROVIDER,
                          MIN_TIME_BW_UPDATES,
                          MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
                  Log.d("Network", "Network");
                  if (locationManager != null) {
                      location = locationManager                                .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                      if (location != null) {
                          latitude = location.getLatitude();
                          longitude = location.getLongitude();
                      }
                  }
              }
              // if GPS Enabled get lat/long using GPS Services
              if (isGPSEnabled) {
                  if (location == null) {
                      locationManager.requestLocationUpdates(
                              LocationManager.GPS_PROVIDER,
                              MIN_TIME_BW_UPDATES,
                              MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
                      Log.d("GPS Enabled", "GPS Enabled");
                      if (locationManager != null) {
                          location = locationManager                                   .getLastKnownLocation(LocationManager.GPS_PROVIDER);
                          if (location != null) {
                              latitude = location.getLatitude();
                              longitude = location.getLongitude();
                          }
                      }
                  }
              }
          }
      } catch (Exception e) {
          e.printStackTrace();
      }
      return location;
  }
  /**
   * Stop using GPS listener
   * Calling this function will stop using GPS in your app
   * */
  public void stopUsingGPS(){
      if(locationManager != null){
          locationManager.removeUpdates(GPSTracker.this);
      }
  }
  /**
   * Function to get latitude
   * */
  public double getLatitude(){
      if(location != null){
          latitude = location.getLatitude();
      }
      // return latitude
      return latitude;
  }
  /**
   * Function to get longitude
   * */
  public double getLongitude(){
      if(location != null){
          longitude = location.getLongitude();
      }
      // return longitude
      return longitude;
  }
  /**
   * Function to check GPS/wifi enabled
   * @return boolean
   * */
  public boolean canGetLocation() {
      return this.canGetLocation;
  }
  /**
   * Function to show settings alert dialog
   * On pressing Settings button will lauch Settings Options
   * */
  public void showSettingsAlert(){
      AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
      // Setting Dialog Title
      alertDialog.setTitle("GPS settings");
      // Setting Dialog Message
      alertDialog.setMessage("GPS is not enabled. Please go to settings and switch on the location fetching service");
      // On pressing Settings button
      alertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() {
          public void onClick(DialogInterface dialog,int which) {
  
              //turnGPSOn();
  
              Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
              mContext.startActivity(intent);
          }
      });
      // on pressing cancel button
      // Showing Alert Message
      alertDialog.show();
  }
  @Override
  public void onLocationChanged(Location location) {
   // TODO Auto-generated method stub
  }
  @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 IBinder onBind(Intent intent) {
    // TODO Auto-generated method stub
      return null;
  }
  
  }
  </code></pre>