Zooming to users location iOS 8 MapKit Obj-C - objective-c

Question

I have no issues displaying a users current location, but I am having trouble trying to zoom to it. I have found a few solutions from other posts here, but nothing seems to be working. Advice is appreciated as it is highly likely that I am missing something simple.
Here is what I have so far:
#import CoreLocation;
#interface ViewController () <CLLocationManagerDelegate>
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Get authorization
CLLocationManager * locationManager = [[CLLocationManager alloc] init];
// Check before requesting, otherwise it might crash older versions of ios
if ([locationManager respondsToSelector:#selector(requestWhenInUseAuthorization)]) {
locationManager.delegate = self;
locationManager.distanceFilter = kCLDistanceFilterNone;
locationManager.desiredAccuracy = kCLLocationAccuracyBest;
[locationManager startUpdatingLocation];
[locationManager requestWhenInUseAuthorization];
}
self.mapView.showsUserLocation = YES;
self.mapView = [[MKMapView alloc] init];
self.mapView.delegate = self;
self.mapView.scrollEnabled = YES;
self.mapView.zoomEnabled = YES;
self.mapView.userTrackingMode = YES;
}
-(void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
//CLLocationCoordinate2D loc = [userLocation coordinate];
//MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(loc, 1000, 1000);
//[self.mapView setRegion:region animated:YES];
//Zoom map to users current location
MKCoordinateRegion region;
MKCoordinateSpan span;
span.latitudeDelta = 0.00001;
span.longitudeDelta = 0.00001;
CLLocationCoordinate2D location = mapView.userLocation.coordinate;
region.span = span;
region.center = location;
[mapView setRegion:region animated:TRUE];
[mapView regionThatFits:region];
}
#end

Answer 1

I did something like this
-(void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
if (!self.initialLocation) {
self.initialLocation = userLocation.location;
MKCoordinateRegion mapRegion;
mapRegion.center = mapView.userLocation.coordinate;
mapRegion.span.latitudeDelta = 0.2;
mapRegion.span.longitudeDelta = 0.2;
[mapView setRegion:mapRegion animated: YES];
}
}
self.initialLocation is an instance of CLLocation. This method constantly updates the user's current location and so what I would do is check to see if it is nil, which it should be off the start and then run the code to zoom in. After the first time, self.initialLocation will never be nil.
if you would constantly like to zoom into the the user's current location...get rid of the if statement.
EDIT
Set this in your .h file for self.initialLocation
#property (strong, nonatomic) CLLocation *initialLocation;
EDIT 2
Remove this line
self.mapView = [[MKMapView alloc] init];
No need to re-initialize your IBOulet