tvOS Focus button in a Subview

Question

I am using AVPlayerController and I have added a subview on top of AVPlayerController. As Soon the subview is displayed I want to shift focus from the player to the Subview and focus the UIButton added on top of that Subivew. I have tried preferredfocusview but its a read-only property and I cannot change it. Can anyone pelase assist. Thanks a lot.

Answer 1

First of all, preferredFocusView is deprecated so you should use preferredFocusEnvironments instead.

It is a computed property, which means you don't assign to it, you override it:

override var preferredFocusEnvironments: [UIFocusEnvironment] {
//if subview exists, return the subview or the button, whichever is focusable
    return [subview]
//otherwise use the default implementation of AVPlayerController
    return super.preferredFocusEnvironments
}

You should also call self.setNeedsFocusUpdate() and self.updateFocusIfNeeded() to request a focus update when you add the subview.