How long is data available since last GPS lock for Activity.getActivityInfo().currentLocation

Developing watch face with Background service.

To get local based data it needs GPS position.

I have used Activity.getActivityInfo().currentLocation for Background service, actually it works, but realised on real device it returns null in short time (minutes) since latest GPS lock via run some activity.

Please advice is it good way to get last known position?

How long is data available since last GPS lock for Activity.getActivityInfo().currentLocation?

Thank you!

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jim_m_58 over 5 years ago

It can vary based on device, and can be a hour on the low end.

What you want to do is when you get a location, save it to Storage, and if you get a null for currentLocation, use the value in Storage if it exists.

That way you have a fallback if it's been too long since there was a GPS activity.

Bodya over 5 years ago in reply to jim_m_58

Thank you!
Have implemented Storage.

But still curious is it any way to get position for longer time? Some services are absolutely ok to be based on location just to know country.

jim_m_58 over 5 years ago in reply to Bodya

With a widget or device app, you can start up GPS.

The caching is the only way to do it with a watch face.

Bodya over 5 years ago in reply to jim_m_58

Thank you! It seems I did what is best possible for the watch face.

jim_m_58 over 5 years ago in reply to Bodya

If you're not doing so, you'll also want to save the last data you get in onBackgroundData() to Storage. That way if a user moves to a widget and back, there is data without waiting for the next temporal event.

Bodya over 5 years ago in reply to jim_m_58

Did it exactly as suggested. Thank you for support, help and advice!