Question

I have this code to wait for some time to get high accurate data:

-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{

  if((newLocation.horizontalAccuracy < 150 && newLocation.horizontalAccuracy > 0 /* valid */ && abs(howRecent) < 15.0 /*If it's a relatively recent event less than 15 seconds */))


}

the issue in other part of my application I need to wait for this method to come back, so i used:

[NSThread sleepForTimeInterval:5]; // wait 5 seconds

Is this a good practice, or there is a better way to wait for another task execution.

Answer 1

There is already a sample project provided by Apple that demonstrates this exact scenario.
The project is called LocateMe and can be found here.

You can find the relevant methods in GetLocationViewController.m.

In a few words, the logic behind it is to discard any cached values and accumulate location readings until the horizontalAccuracy meets the desiredAccuracy requirements. I hope that this will get you on the right track.