Why is horizontalAccuracy = 0.00?

Question

I try to use

gpsSignal = currentLocation.horizontalAccuracy;

(gpsSignal is float)

I know, if gpsSignal is < 0 Signal is lost but, what does it mean when gpsSignal is 0.00 ???

greetings from cloudy germany

Edit: The result of horizontalAccuracy only is 0.00 if i use it on my iPad 4 ( only wifi) On my iPhone and iPad2 ( with celluar) it works as it should

So I think, the result of exactly 0.000 as return value of horizontalAccuracy means: there is no GPS

But I cant find this fact in documentation???

Answer 1

It seems you have found a bug. There are some "secrets" in Gps application developpment:

1) if latitude and longitude both have the value 0 and if this location is marked as valid then this is always a programming error, on your or on API side, or some other place. Although (0,0) is theoretically possible practically it is reachable only via simulation. No ship or airplane can exactly navigate to (0,0) with a precision of 10cm.

2) same applies to some other values, like hdop or in your case horAcc.

So ignore this location!