Android Device Speed

[infymax_souvik]

How can I calculate device speed using gps? Can you please provide me the code for the speed?

 

[Indoler]

How can I calculate device speed using gsp? Can you please provide me the code for the speed?

I have my phone to do device speed calculations for me.
There are dedicated apps, like these and variations on that theme, in the Play Store. And there are apps where speed calculation is just one feature of many, like navigation apps. Think Google Maps and Waze (but there are loads of others too; each with its own application and pros and cons). Waze is my current favorite. Has been for the last 3 years, in fact. Anyway, Waze shows you your current speed at all times in the display if that's one of your settings.

Another app you may want to consider is My Tracks. It records and analyses, in some (graphed) detail, well basically the phone's every move in the time-space continuum... With speed a prominent aspect. Can be useful in certain situations. Have a look.
And these are all free.