Re: nibs don't respect protocols
Re: nibs don't respect protocols
- Subject: Re: nibs don't respect protocols
- From: Jonathan Hess <email@hidden>
- Date: Wed, 2 Jun 2010 13:25:35 -0700
On Jun 2, 2010, at 11:27 AM, Matt Neuburg wrote:
> I'm moving this over from Cocoa-Dev, so if you have the feeling you've seen
> this before, that's why.
>
> I'm struck by the following sort of situation. A UIApplication's delegate
> property is defined as an id <UIApplicationDelegate>. But if I hook up the
> UIApplication proxy object in a nib to another instance as its delegate, and
> if that other instance does _not_ formally adopt UIApplicationDelegate,
> there seems to be no penalty: the nib doesn't complain, and the app runs
> fine.
>
> So... Are nibs just ignorant of protocols? This feels like a bug. If you try
> to hook up an outlet to the wrong type (e.g. a UILabel instead of a declared
> UITextField), you can't; Interface Builder won't let you. Well, a class that
> doesn't declare conformance to UIApplicationDelegate *is* the wrong type for
> UIApplication's delegate; yet Interface Builder *does* let you. In that
> case, what's the point of having the protocol at all?
>
> I'd be willing to file a bug but I think I'd like some encouragement
> first... :) m.
Thanks Matt, please do file a bug at http://bugreport.apple.com/.
Thanks -
Jon Hess
>
> --
> matt neuburg, phd = email@hidden, <http://www.tidbits.com/matt/>
> A fool + a tool + an autorelease pool = cool!
> AppleScript: the Definitive Guide - Second Edition!
> http://www.tidbits.com/matt/default.html#applescriptthings
>
>
>
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