Question

I have a UIBarButtonItem (defined in Storyboard), I’ve assigned to my own custom SwitchConsumerBarButton class.

What I want to do is dictate it’s visibility on Page Init based on some criteria. I’d like to do this programmatic. I’ve tried implementing -(id) init but it doesn’t get called, how do I control the initialization of this object? I’ve looked at the different initialization methods that can be called for this type, but I don’t know which one the Storyboard will call?

@implementation SwitchBarButton

-(id) init
{
    if(self = [super init]) {
        NSLog(@"gwojbngowj");
    }
    return self;
}

@end

Answer 1

I’m not sure if you mean to adjust the alpha, or to hide the button outright, so here’s both.

if (myCondition == YES) {
    myButton.alpha = 0.5;
    //Or if you mean hide all together...
    [myButton setHidden:YES];
}

If you are looking to create the button depending on the variable, you could do that like this:

if (myCondition == YES) {
    UIBarButtonItem *myBarItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(mySelector)];
    [self.navigationItem setRightBarButtonItem:myBarItem];
}