Re: makeObjectsPerformSelector on a sub class
Re: makeObjectsPerformSelector on a sub class
- Subject: Re: makeObjectsPerformSelector on a sub class
- From: "T.J. Usiyan" <email@hidden>
- Date: Wed, 21 Mar 2012 17:43:41 -0400
Another option would be a container holding just the tiles.
On Wed, Mar 21, 2012 at 5:06 PM, James Bucanek <email@hidden>wrote:
> Pascal Harris <mailto:45rpmlists@googlemail.**com<email@hidden>>
> wrote (Wednesday, March 21, 2012 7:56 AM -0000):
>
>
> Now I want to scramble the state of each of the tiles. In the game
>> controller, I'm using the following code:
>>
>> [[self.view subviews] makeObjectsPerformSelector:@**
>> selector(scrambleState)];
>>
>> I've put a breakpoint in scrambleState - and it never gets called. I'm
>> guessing that 'makeObjectsPerformSelector' fails to work because
>> scrambleState
>> is not a method in UIView. Question is, what do I need to do in order to
>> ensure that this code gets called?
>>
>
> Others have made a lot of valid suggestions and points, but if it wasn't
> mentioned I have another reason this would fail:
>
> You must ensure that *all* subview of self.view implement -scrambleState.
> The first object in the collection that doesn't implement this method will
> throw an exception and the iteration will stop.
>
> Safer, although longer, would be:
>
> // (warning: typed in mail)
> UIView* subview;
> for ( subview in self.view.subviews )
> if ([subview respondsToSelector:@selector(**scrambleState)])
> [subview scrambleState];
> --
> James Bucanek
>
>
>
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