Re: [android-developers] Re: Get and save GPS location while i am walking

Aside from that, I'd be pretty weary of the security of any app that
was constantly tracking me for hours straight.

The *only* situation where I see this making sense is when I go out
for a day of hiking or something, and even then I don't want anything
*that* accurate, because I just don't move all that fast... Maybe
once every twenty or thirty minutes..

Maybe there's a lot of people who want to constantly see where they
are and record it..., but I can't think of too many (besides the
obvious navigation apps.)

Kris

On Mon, Apr 2, 2012 at 5:10 PM, Sean Barbeau <sjbarbeau@gmail.com> wrote:
> I agree with Kristopher, GPS eats up battery energy quickly and you have to
> be careful using GPS in an app to avoid exhausting the user's battery.
>
> We've done extensive work to come up with some dynamic GPS sampling
> strategies that increase battery life because of this reason.  Check out
> slide 5 in this presentation:
> http://www.locationaware.usf.edu/wp-content/uploads/2011/11/Barbeau-GPS-Auto-Sleep-patent3.pps
>
> With a HTC Hero, sampling GPS every 4 seconds and doing nothing else (i.e.,
> Wifi, screen off) the battery is exhausted after 5 hrs.  This matches up
> with the guidance given by the MyTracks folks at Google who say you'll
> typically get less than 5 hrs of battery life when using MyTracks:
> http://support.google.com/gmm/bin/answer.py?hl=en&answer=2391538&topic=2391064&ctx=topic
>
> So, given that users depend on their phone to do other things (like make
> phone calls), you need to use GPS wisely.
>
> Sean
>
>
> On Friday, March 30, 2012 10:10:53 PM UTC-4, lbendlin wrote:
>>
>> A full battery on the phone can easily support 8 hrs of constant GPS
>> tracking, especially when the screen is off. Now go walk for 8 hrs.
>>
>> On Thursday, March 29, 2012 3:37:37 PM UTC-4, Kristopher Micinski wrote:
>>>
>>> Yes, having GPS going on a lot will be bad for your battery..., you
>>> have to live with it.
>>>
>>> You can try getting the location from a passive provider, but that's
>>> somewhat spotty, of course..., If you want to use GPS, you have to be
>>> willing to pay the price..
>>>
>>> kris
>>>
>>> On Thu, Mar 29, 2012 at 3:29 PM, Spica <spicanebula@gmail.com> wrote:
>>> > Hmm... would be expenssive on battery coz GPS would be working all
>>> > that time.
>>> >
>>> > Any different idea?
>>> >
>>> > On Mar 29, 12:59 pm, lbendlin <l...@bendlin.us> wrote:
>>> >> Nothing huge about it. You only get one data row per second max.
>>> >>  SQLite is
>>> >> laughing at that.
>>> >>
>>> >>
>>> >>
>>> >> On Thursday, March 29, 2012 12:22:47 PM UTC-4, Spica wrote:
>>> >>
>>> >> > Guys,
>>> >> > How i can save GPS locations while i am walking? I will be
>>> >> > displaying
>>> >> > my walking track which i will recording while walking. Where i would
>>> >> > be saving all those huge number of locations on my phone?
>>> >> > There are few apps in the market who are doing that, please share
>>> >> > your
>>> >> > ideas how and where they save this data?
>>> >>
>>> >> > Thanks,- Hide quoted text -
>>> >>
>>> >> - Show quoted text -
>>> >
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