On Oct 16, 2011, at 2:15 PM, Quincey Morris wrote:
> On Oct 15, 2011, at 20:20 , Roland King wrote:
>
>> -(void)addView:(UIView *)view forElement:(id)element
>> {
>> CFDictionarySetValue( viewToElementMap, (__bridge id)view, (__bridge
>> id)element );
>> }
>>
>> gives me
>>
>> error: incompatible types casting 'UIView *__strong' to 'id' with a __bridge
>> cast [4]
>
> Look in 3.2.4 of the ARC document:
>
>
> http://clang.llvm.org/docs/AutomaticReferenceCounting.html#objects.operands.casts
>
> 'UIView*' is a retainable pointer type, so you must bridge it to a
> non-retainable pointer type -- in this case, you want 'const void *' because
> that's the type of the parameter you're passing:
>
>> CFDictionarySetValue( viewToElementMap, (__bridge const void *)view,
>> (__bridge const void *)element );
>
> That compiles without error for me. Note that both of your casts were wrong.
> The error message on the 3rd parameter didn't appear until the error on the
> 2nd parameter was corrected.
>
>
Thanks Quincey, I'd managed to get myself hopelessly confused and fixated on
(__bridge id), partly from reading a thread in the dev forums which was clearly
just wrong. Working now.
All those __bridge calls made my code look really craptastic so I ended up
factoring it out into its own class and hiding it in one implementation file,
much better. _______________________________________________
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