Where to add the UISegmentedController; loadView, initWithNibName: bundle:, or viewDidLoad?

I'm just getting started with Objective-C programming and I'm a little bit confused about where to declare a UISegmentedController instance as a "subview" of my viewController root view.

I've been experimenting with the code and it seems to work regardless of whether its created in "loadView", viewDidLoad, or initWithNibName: bundle: and I'm wondering why this is so, and also where the correct place to create it would be.

All the views in the hierarchy were created programmatically.

Code:

UISegmentedControl code that I'm unsure where to place:

self.segCon = [[UISegmentedControl alloc] 
initWithItems:(NSArray *)@[@"Red",@"Green", @"Blue"]];

self.segCon.frame = CGRectMake(35, 200, 250, 50);

[self.segCon addTarget:self
                action:@selector(changeColor:)
      forControlEvents:UIControlEventValueChanged];
[self.view addSubview:self.segCon];

BNRHypnosisViewController.m:

#import "BNRHypnosisViewController.h"
#import "BNRHypnosisView.h"

@interface BNRHypnosisViewController()

@property (strong, nonatomic) UISegmentedControl *segCon;

- (void)changeColor:(id)sender;

@end

@implementation BNRHypnosisViewController

-(void)loadView
{
    //create a view
    BNRHypnosisView *backgroundView = [[BNRHypnosisView alloc] init];

    //set it as *the* view of this view controller
    self.view = backgroundView;

Do I place the UISegmentedControl code here?

}

-(instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

    if (self) {
        //Set the tab bar items title
        self.tabBarItem.title = @"Hypnotize";

        //Create a UIImage from the file
        // This will use Hypno@2x.png on retina devices
        UIImage *i = [UIImage imageNamed:@"Hypno.png"];

        //put the image on the tab bar
        self.tabBarItem.image = i;

or here?

    }

    return self;
}    

-(void)viewDidLoad
{
    //Always call the super implementation of viewdidload
    [super viewDidLoad];

    NSLog(@"BNRHypnosisViewController loaded its view");

or here?

}

- (void)changeColor:(id)sender
{
    NSLog(@"The Segment controller was touched %d", self.segCon.selectedSegmentIndex);
    if(self.segCon.selectedSegmentIndex == 0){
    ((BNRHypnosisView *)self.view).circleColor = [UIColor redColor];
    }
    if(self.segCon.selectedSegmentIndex == 1){
    ((BNRHypnosisView *)self.view).circleColor = [UIColor greenColor];
    }
    if(self.segCon.selectedSegmentIndex == 2){
    ((BNRHypnosisView *)self.view).circleColor = [UIColor blueColor];
    }

}


@end    

Any help would be greatly appreciated, thank you in advance for your feedback!

I normally put such code in viewDidLoad. But since you have a need to implement loadView, you can setup the segmented control there.

Don't do it in the init... method because then you end up needlessly loading the view from the init... method.