Zooming to users location [closed] - ios

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I'm making this app where people can see what tourist attractions are near them and I'm a bit stuck!
I need it to load the user's current location when the app is loaded and zoom to it, however it's not doing so.
Sorry to be a bit blunt but I really don't know how to set it up so that it will work with both the button and load their location automatically.
https://pbs.twimg.com/media/BcRSTk0CAAEV47Q.jpg
ViewController.h
#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#interface ViewController : UIViewController{
MKMapView *mapview;
}
#property (weak, nonatomic) IBOutlet MKMapView *myMapView;
-(IBAction)getlocation;
#end
ViewController.m
#import "ViewController.h"
#import "Annotation.h"
#interface ViewController ()
#end
//Thorpe Park Coordinates
#define THORPE_LATITUDE 51.40395;
#define THORPE_LONGITUDE -0.51433;
//London Eye Coordinates
#define LONDONEYE_LATITUDE 51.50340;
#define LONDONEYE_LONGITUDE -0.11952;
//The New London Dungeons
#define LONDONDUGNEONS_LATITUDE 51.50231;
#define LONDONDUGNEONS_LONGITUDE -0.11965;
//Span
#define THE_SPAN 0.50f;
#implementation ViewController
#synthesize myMapView;
-(IBAction)getlocation {
mapview.showsUserLocation = YES;
}
- (void)viewDidLoad
{
[super viewDidLoad];
//Create Region
MKCoordinateRegion myRegion;
//Center
CLLocationCoordinate2D center;
center.latitude = LONDONEYE_LATITUDE;
center.longitude = LONDONEYE_LONGITUDE;
//Span
MKCoordinateSpan span;
span.latitudeDelta = THE_SPAN;
span.longitudeDelta = THE_SPAN;
myRegion.center = center;
myRegion.span = span;
//Set our mapView
[myMapView setRegion:myRegion animated:YES];
//Annotation's
NSMutableArray * locations = [ [NSMutableArray alloc] init];
CLLocationCoordinate2D location;
Annotation *myAnn;
//London Eye
myAnn = [[Annotation alloc] init];
location.latitude = LONDONEYE_LATITUDE;
location.longitude = LONDONEYE_LONGITUDE;
myAnn.coordinate = location;
myAnn.title = #"The London Eye";
myAnn.subtitle = #"";
[locations addObject:myAnn];
//The New London Dungeons
myAnn = [[Annotation alloc] init];
location.latitude = LONDONDUGNEONS_LATITUDE;
location.longitude = LONDONDUGNEONS_LONGITUDE;
myAnn.coordinate = location;
myAnn.title = #"The London Dungeons";
myAnn.subtitle = #"";
[locations addObject:myAnn];
//Thorpe Park
myAnn = [[Annotation alloc] init];
location.latitude = THORPE_LATITUDE;
location.longitude = THORPE_LONGITUDE;
myAnn.coordinate = location;
myAnn.title = #"Thorpe Park";
myAnn.subtitle = #"";
[locations addObject:myAnn];
[self.myMapView addAnnotations:locations];
/*
//1. Create a coordinate to be used with pin
CLLocationCoordinate2D ThorpeLocation;
ThorpeLocation.latitude = THORPE_LATITUDE;
ThorpeLocation.longitude = THORPE_LONGITUDE;
Annotation * myAnnotation = [Annotation alloc];
myAnnotation.coordinate = ThorpeLocation;
myAnnotation.title = #"Thorpe Park";
myAnnotation.subtitle = #"Theme Park";
[self.myMapView addAnnotation:myAnnotation];
*/
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end

Answer 1

Use this, and don't forget to put the delegate on your .h file, hope it works ;)
_mapView.userTrackingMode = YES;
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation {
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];
}