tvos elevate collection view cell on focus

Question

I want to increase the size of an UICollectionViewCell focused inside the collection view.

How can I increase the size of an UICollectionViewCell when it's focused? I couldn't do it with CGAffine, I tried this:

cellChosen.transform = CGAffineTransform(scaleX: 2, y: 2)

but it didn't work. Did I do it wrongly?

There is also an effect on the UIImageView called adjustImageWhenAncestorFocused that is quite cool. Is it possible to use it on the cell ?

IMPORTANT: I'm using swift 3 and the cell has an UILabel and a UIImageView.

Answer 1

You need to use transform in didUpdateFocusInContext. For example

- (void)didUpdateFocusInContext:(UIFocusUpdateContext *)context withAnimationCoordinator:(UIFocusAnimationCoordinator *)coordinator
{
    if (self.focused)
    {
        // Apply focused appearence,
        // e.g scale both of them using transform or apply background color 
    }
    else
    {
       // Apply normal appearance
    }
}