Question

I have a uitextfield subclass and in the init method and setDelegate I have this:

- (void) setDelegate:(id<UITextFieldDelegate>)paramDelegate{
    [super setDelegate:paramDelegate];

    MRAAdvancedTextFieldDelegate *limitedDelegate = [[MRAAdvancedTextFieldDelegate alloc] init];
    self.delegate = limitedDelegate;
}

I am using ARC, but this results in a BAD_ACCESS. Any ideas?

Answer 1

You write self.delegate = limitedDelgate within your setDelegate: method. This is exactly the same as calling [self setDelegate:limiatedDelegate]. Since you are within the -setDelegate: method itself, you are causing infitine recursion. Hope this helps!

EDIT: per your comment about your intention, override it like this:

- (void) setDelegate:(id<UITextFieldDelegate>)paramDelegate{
    MRAAdvancedTextFieldDelegate *limitedDelegate = [[MRAAdvancedTextFieldDelegate alloc] init];
    [super setDelegate:limitedDelegate];
}

But I don’t believe it’s a good idea to do this – you should have your client code pass in instances of your delegate instead.