How can I determine if location information returned by CLLocationManager is valid?
How can I determine if location information returned by CLLocationManager is valid?
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How can I determine if location information returned by CLLocationManager is valid?
Two things to look for, the timestamp and the hdop (Horizontal Degree of Precision). The first one will tell you when the reading was taken, the second will tell you the level of error in the reading. For example a hdop of 1000 will tell you that the measurement is accurate to within 1000 metres. Obviously the lower the hdop the better.
They are both in the Core Location update you get.