Question

Is there any way to specify the time intervals that the Location Manager broadcasts the current location?

I am using a method called startListening:

public void startListening() {
        locationManager.requestLocationUpdates(
                LocationManager.GPS_PROVIDER, 
                0, 
                0, 
                this
        );
}

Thanks

Answer 1

public void requestLocationUpdates (String provider, long minTime, float minDistance, LocationListener listener, Looper looper)

Registers the current activity to be notified periodically by the named provider. Periodically, the supplied LocationListener will be called with the current Location or with status updates.

It may take a while to receive the most recent location. If an immediate location is required, applications may use the getLastKnownLocation(String) method.

In case the provider is disabled by the user, updates will stop, and the onProviderDisabled(String) method will be called. As soon as the provider is enabled again, the onProviderEnabled(String) method will be called and location updates will start again.

The frequency of notification may be controlled using the minTime and minDistance parameters. If minTime is greater than 0, the LocationManager could potentially rest for minTime milliseconds between location updates to conserve power. If minDistance is greater than 0, a location will only be broadcasted if the device moves by minDistance meters. To obtain notifications as frequently as possible, set both parameters to 0.

Background services should be careful about setting a sufficiently high minTime so that the device doesn’t consume too much power by keeping the GPS or wireless radios on all the time. In particular, values under 60000ms are not recommended.

The supplied Looper is used to implement the callback mechanism.

Parameters

• provider the name of the provider
  with which to register
• minTime the
  minimum time interval for
  notifications, in milliseconds. This
  field is only used as a hint to
  conserve power, and actual time
  between location updates may be
  greater or lesser than this value.
• minDistance the minimum distance
  interval for notifications, in meters
• listener a whose onLocationChanged(Location)
  method will be called for each
  location update
• looper a Looper
  object whose message queue will be
  used to implement the callback
  mechanism.

Throws

IllegalArgumentException if provider is null or doesn’t exist
IllegalArgumentException if listener is null
IllegalArgumentException if looper is null
SecurityException if no suitable permission is present for the provider.