Question

As mentioned in the title, how do I implement such a functionality?

I am using the code below, (in my viewDidLoad), to get the button on my Navigation Controller of my main view.

UIButton* infoButton = [UIButton buttonWithType:UIButtonTypeInfoLight];

[infoButton addTarget:self action:@selector(viewWillAppear:) forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:infoButton];

Not sure how I can get it displayed in all my views.

Answer 1

Each view pushed to the navigation stack has an own navigation bar. So I afraid you have to add this button to each navigation bar, when you create a view and before you push this view to the navigation stack.