Method called only in viewDidApper but not in viewDidLoad, why?

Question

I created a method that sets the title of a button based on a value.

This method needs to be called when opening the viewController and maybe refreshed when the controller appears again.

So i created the method and I called that method in viewDidLoad and viewDidApper but it seems to be called only when I change page and turn back to the view controller.

Why?

My code is

- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
[self controlloRichieste];

......
}

-(void)viewDidAppear:(BOOL)animated{

[self controlloRichieste];
}


-(void)controlloRichieste{
//Numero richieste di contatto
NSString *numeroRichieste = @"1";

if([numeroRichieste isEqual:@"0"]){
    [_labelRequestNumber setTitle:@"Nessuna" forState:UIControlStateNormal];
} else {
    _labelRequestNumber.titleLabel.text = numeroRichieste;
    _labelRequestNumber.tintColor = [UIColor redColor];
}
//Fine Numero richieste di contatto
}

Answer 1

You can also move that code to viewWillAppear so that it gets called each time it appears.

- (void)viewWillAppear:(BOOL)animated {
  [super viewWillAppear:animated];

  [self controlloRichieste];
}

I see the problem now, try the other way around

-(void)controlloRichieste{
    //Numero richieste di contatto
    NSString *numeroRichieste = @"1";

    if([numeroRichieste isEqual:@"0"]){
        [_labelRequestNumber setTitle:@"Nessuna" forState:UIControlStateNormal];
    } else {
        _labelRequestNumber.tintColor = [UIColor redColor];
        [[_labelRequestNumber titleLabel]setText:numeroRichieste];
    }
    //Fine Numero richieste di contatto
}

Change set the button color, before you change its titleLabel's text

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I created a demo PROJECT for you, hope it's helpful!