[android-developers] Re: location updates using network provider

As far as I know Android tries to calculate an update plan among all location requesting apps. It comes up with an update strategy according to all these request parameters and therefore these values you specify can just be seen as your best case scenario "wishes". You cannot take them for granted since a lot of factors can be responsible for inaccurate results.

The documentation of requestLocationUpdates states that it can take longer than your minimum update interval time to receive an update. However, it also states that the location update time will never be less than your minimum update time. Your observed 75 seconds seems to contradict the documentation. It may be a bug in Android.

If you need to have your app "alive" every 90 seconds in order to phone home or something like that you probably need to make use of the AlarmManager component on top of these location updates. Be aware that stuff like that can be a burden on the battery life and users won't appreciate that.

Read the following for more information:

• http://developer.android.com/guide/topics/location/strategies.html
• Excellent PDF about location update strategies: http://www.deutsche-telekom-laboratories.com/~kyuhan/papers/MobiSys10Kim.pdf
  

On Wednesday, January 9, 2013 6:29:40 AM UTC-6, Narendra Singh Rathore wrote:

Hello all,

my requirement is to get location updates every 90 seconds. I am using network provider for this.

I am doing this as given below:

    locationManager.requestLocationUpdates(              LocationManager.NETWORK_PROVIDER,               MINIMUM_TIME_BETWEEN_UPDATES,               MINIMUM_DISTANCE_CHANGE_FOR_UPDATES,              new MyLocationListener()      );

Here, in this method, I am passing 90000 as MINIMUM_TIME_BETWEEN_UPDATES, and 0 as MINIMUM_DISTANCE_CHANGE_FOR_UPDATES, so the expected result should be:

The method onLocationChanged should be called every 90 seconds.

But, the outcome is: the onLocationChanged method is being called first in 75 seconds, then in 105 seconds, then 75, 105.....and so on..

But my requirement is to get the location updates in 90 seconds instead of different durations/periods.

In case, if location returns null, I want to get the last known location.

Please, suggest me the way to resolve this problem.

Thanks & Regards,

NSR

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