Discuss developing Android applications using the Android framework. ()

tarek attia | 26 Oct 2010 12:54

Speed from GPS

Dear all,

Just in my application I want to get the speed of the android device
using the GPS,so I use the api of location.getspeed()

http://developer.android.com/reference/android/location/Location.html#getSpeed%28%29

However all the speed I got is just incorrect ,,,and the values are
very different from the actual one !!!!

Any clue on that ???
-- 
tarek

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lloyd | 26 Oct 2010 13:20

RE: Speed from GPS

I recently tried this myself and found it to be correct. The speed given is
in Meters/Sec. I wrote logic to convert to MPH. I then went for a drive in
my car. The displayed speed matched the speedometer in my car from 0 to 65
MPH. I was happy.

-----Original Message-----
From: android-developers <at> googlegroups.com
[mailto:android-developers <at> googlegroups.com] On Behalf Of tarek attia
Sent: Tuesday, October 26, 2010 6:55 AM
To: android-developers
Subject: [android-developers] Speed from GPS

Dear all,

Just in my application I want to get the speed of the android device
using the GPS,so I use the api of location.getspeed()

http://developer.android.com/reference/android/location/Location.html#getSpe
ed%28%29

However all the speed I got is just incorrect ,,,and the values are
very different from the actual one !!!!

Any clue on that ???
-- 
tarek

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You received this message because you are subscribed to the Google
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Daniel Drozdzewski | 26 Oct 2010 13:23

Re: Speed from GPS

On Tue, Oct 26, 2010 at 11:54 AM, tarek attia <tarek.m.attia <at> gmail.com> wrote:
> Dear all,
>
> Just in my application I want to get the speed of the android device
> using the GPS,so I use the api of location.getspeed()
>
> http://developer.android.com/reference/android/location/Location.html#getSpeed%28%29
>
> However all the speed I got is just incorrect ,,,and the values are
> very different from the actual one !!!!

How different?

Few things to look at is:
- right permission (i.e. android.permission.ACCESS_FINE_LOCATION)
- request periodic location from LocationManager
- remember that the speed readings will start coming through only
after GPS fixes on some satellites, which takes time. This is because
you are reading an average speed, not actual speed.
- get the Location object in on LocationListener.onLocationChanged()
to call hasSpeed() and only when that call returns true, read the
speed
- results are in meters per second

Daniel

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Emre A. Yavuz | 27 Oct 2010 13:21

Testing the speed and quality of service of a connection

Dear all,

I am looking for an open source app or code snippet to measure the speed (in both directions) and quality of service (delay, jitter and packet loss; probably via ping) of a connection for academic purposes.

Is anybody aware of such apps, open source projects or code snippets ?

Thanks in advance,

Cheers,

Emre

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MB | 26 Oct 2010 18:00

Re: Speed from GPS

What device/OS are you trying it on?
It works fine on my droid.

On Oct 26, 3:54 am, tarek attia <tarek.m.at... <at> gmail.com> wrote:
> Dear all,
>
> Just in my application I want to get the speed of the android device
> using the GPS,so I use the api of location.getspeed()
>
> http://developer.android.com/reference/android/location/Location.html...
>
> However all the speed I got is just incorrect ,,,and the values are
> very different from the actual one !!!!
>
> Any clue on that ???
> --
> tarek

--

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tarek attia | 27 Oct 2010 22:54

Re: Re: Speed from GPS

I'm doing it on Nexus one

On Tue, Oct 26, 2010 at 6:00 PM, MB <manoj.bist1 <at> gmail.com> wrote:

What device/OS are you trying it on?
It works fine on my droid.

On Oct 26, 3:54 am, tarek attia <tarek.m.at... <at> gmail.com> wrote:
> Dear all,
>
> Just in my application I want to get the speed of the android device
> using the GPS,so I use the api of location.getspeed()
>

> http://developer.android.com/reference/android/location/Location.html...
>
> However all the speed I got is just incorrect ,,,and the values are
> very different from the actual one !!!!
>
> Any clue on that ???
> --
> tarek

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--
tarek