Question

Basically if I have a method declared and tied to a button such as:

- (IBAction) clickMe:(id)sender {
.....
}

Is there a way in this method to see whether sender is a subclass of type UIViewController and if so, somehow access something like [sender.view removeFromSuperView] ?

Is this at all possible?

Thanks!

Answer 1

You can use

isKindOfClass:

Returns a Boolean value that indicates
whether the receiver is an instance of
given class or an instance of any
class that inherits from that class.
(required)

to determine if sender is of a certain subclass. After that you should cast sender to UIViewController to remove it’s view, else you’ll get a warning from the compiler.