ios：如何使用获取CLLocationCoordinate2D <CLLocationManagerDelegate>

Question

What is the propery way to obtain CLLocationCoordinate2D?

In .h:

@property (nonatomic, readonly) CLLocationCoordinate2D coordinate;

In .m

//Called when the location can be obtained
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{

    //Get the latitude and longitude location
    CLLocation *lastLocation = [locations lastObject];
    _latitude = [[NSString alloc] initWithFormat:@"%f", lastLocation.coordinate.latitude];
    _longitude = [[NSString alloc] initWithFormat:@"%f", lastLocation.coordinate.longitude];
}

Is it this:

_coordinate = lastLocation.coordinate;

or this:

_coordinate = manager.location.coordinate;

Answer 1

First read the documentation as already stated in the comments, because this is a must know for location programming.
Second pay attention that is not the first data you get from delegate, because it could be a cached data (you need to check the timestamp) or an invalid data (with horizontal accuracy less that zero).
You could use that code:

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{
    CLLocation * newLocation = [locations lastObject];
    if (newLocation.horizontalAccuracy < 0) {
        return;
    }
    NSTimeInterval interval = [newLocation.timestamp timeIntervalSinceNow];
    if (abs(interval)>5) {
        return;
    }
   //YOUR CODE HERE
}

Hope this helps, Andrea