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I want to calculate the speed of user on WiFi. I am getting location updates via. onLocationChanged() but every time hasSpeed() returning false and getSpeed() returning 0.0.

Is there any API available to get speed on WiFi or I need to calculate speed manually? Any help or guidance will be well appreciated.

Note: I am able to get the speed on GPS.

Computerish
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abhishek kumar gupta
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1 Answers1

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You won't be able to use getSpeed() when the user is only connected to WiFi. WiFi location works based on known locations of networks the phone sees. Unlike GPS, this will only ever provide a rough location, so there's no way to calculate speed.

Think about it like this: If I start at point A and walk 10 feet to point B, will there be any chance in the WiFi networks I can see? Probably not. Will be there be a change in my GPS coordinates? With a decent view of the sky, yes.

Computerish
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  • Hi Computerish, thanks for the reply. Then on WiFi, I need to calculate the speed based on the location updates, right? – abhishek kumar gupta Jul 11 '14 at 12:27
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    You simply won't be able to obtain an accurate speed reading unless your user is travelling fast enough to be passing lots of hotspots. Perhaps if the user were driving down a road with lots of nearby WiFi networks you could get a rough average based on location updates. I suspect in this case Android might even report a `getSpeed()` value, but I wouldn't expect it to be very accurate and in most situations the location simply won't change. – Computerish Jul 11 '14 at 12:30