View with subviews in a uinavigationbar and uitoolbar - ios

Question

I really need your help with this one (first post on SO -- be gentle):
I have two dynamic UIButtons which I would like to have centered in a UIView, which in turn should be centered in a UINavigationbar and UIToolbar. I can't - despite a lot of Googling - seem to figure out a proper way to do this.
This is what I've done so far:
In viewDidLoad, I add the two buttons as subviews and set the view as the UINavigationbar's titleView
self.myClass.viewForTitleAndButton = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 120, 32)];
[self.myClass.viewForTitleAndButton setBackgroundColor:[UIColor blackColor]];
[self.myClass.viewForTitleAndButton addSubview:self.myClass.myButton];
[self.myClass.viewForTitleAndButton addSubview:self.myClass.myOtherButton];
self.navigationItem.titleView = self.myClass.viewForTitleAndButton;
In a method being triggered when I press certain buttons, I set the title (and bounds) of one of the buttons depending on what's clicked:
CGSize titleSize = [title sizeWithAttributes:#{NSFontAttributeName : [UIFont italicSystemFontOfSize:17.0]}];
CGSize screenSize = [UIScreen mainScreen].bounds.size;
CGFloat newX = (screenSize.width - titleSize.width) / 2;
CGRect buttonFrame = self.myClass.myButton.frame;
//Removing the line below doesn't do any difference at the moment
self.myClass.myButton.bounds = CGRectMake(newX, buttonFrame.origin.y, titleSize.width+8, buttonFrame.size.height);
[self.myClass.myButton setTitle:title forState:UIControlStateNormal];
NSLog(#"Title: %#", title);
//title is a NSString that changes depending on what is clicked. I am 100% sure it changes as I can see it in the log every time the method is triggered.
The problem is that the title of myButton is not changed. It worked before with the very same button when it was placed in a different spot and not as a subview.
Q1: What am I missing to make the title of the button change?
Q2: Is adding the buttons as subViews to a view that is then placed in the navigationbar and toolbar respectively a sound way to accomplish what I want?
This is really bugging me, any pointers in the right direction is much appreciated.

Answer 1

I don't think you can add a button which is already an outlet of a view controller. Thinking in another way, a button(view) can only has one superview.
Create button dynamically for the title view.
- (void)viewDidLoad
{
[super viewDidLoad];
UIView *iv = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 160, 44)];
iv.backgroundColor = [UIColor greenColor];
titleButton = [UIButton buttonWithType:UIButtonTypeCustom];
titleButton.frame = CGRectMake(0, 0, 120, 44);
[titleButton setTitle:#"test" forState:UIControlStateNormal];
[titleButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[iv addSubview:titleButton];
self.navigationItem.titleView = iv;
}
//some event to change the button title
- (void)click:(UIButton *)button
{
[titleButton setTitle:#"I changed" forState:UIControlStateNormal];
}