I have several instances of a UIControl class Foo being instantiated, one instance corresponding to each cell in a UITableView. The Class has:

BOOL selected;
UIImageView *imageView;
UIImage *imageOne;
UIImage *imageTwo;

I've assigned each instance a tag:

foo.tag = indexPath.row;

I would now like to reference the UIImageView.image for a (or several) specific instance(s) by its tag to switch it to the other image.

In my search I've seen things like classes being assigned tags using initWithTag (I assume they're assigning tags)...

SomeClass *someClass = [[SomeClass alloc]initWithTag:1 ...

[someArray addObject: [[SomeClass alloc]initWithTag:2 ...
[someArray addObject: [[SomeClass alloc]initWithTag:3 ... 

...but I haven't seen how they are later referenced by that tag.

I have seen a reference to getChildByTag which had promise, but I can't find it in the documentation or examples (maybe not iphone).

Does anyone know how reference the imageView.image within an instance using its tag?

Thanks