Question

I have an array of views, and I need to hide them all, so I use:

BOOL shouldHideViews = YES;
[allViews makeObjectPerformSelector:@selector(setHidden:) withObject:(void *)shouldHideViews]

When I convert the code to ARC, it tells me I need some bridged cast, then I changed:

(void *)shouldHideViews

to

(__bridge BOOL)shouldHideViews

it says incompatible types casting ‘int’ to ‘BOOL’ with a __bridge cast

So how do I do it? I know I can just iterate all the views in the array, but this is not the point, I want to know in general what I should do to make this ARC compatible.

Thanks!

Answer 1

The other answers indicating that you can’t pass YES this way are correct. There are easier solutions however:

[allViews setValue:[NSNumber numberWithBool: shouldHideViews] forKey:@"hidden"];

This works because NSArray overrides its setValue:forKey: for exactly this use.

You can also now use blocks:

[allViews enumerateObjectsUsingBlock:
  ^(id obj, NSUInteger idx, BOOL *stop){ [obj setHidden:shouldHideViews];}];

Or the tried and true for() loop (see @rob mayoff’s answer.)

Of them, I generally just use a for loop.