Don't allow user interaction when activity indicator view is visible

Question

I have a view which contains two views. One of those views contains two buttons and some text labels. The other one, with alpha set to 0.25, has an UIActivityIndicator

Answer 1

You could disable/enable the UIButtons based on the UIActivityIndicatorView being shown or not. Or, if you just want to "discard the user interaction" while the spinner is shown, in the button handler method:

- (void)buttonTapped:(id)sender {
    if ([spinner superview] != nil && [spinner isAnimating]) {
        return;
    }
    // ... the rest of your code
}

This example assumes that when you hide the UIActivityIndicatorView you call one of:

[spinner removeFromSuperview];

or

[spinner stopAnimating];