[sandofsky]

You're observing the superview in a hierarchy you don't own. In your code, you have an iOS version check, presumably since the property you're looking for changed between iOS versions.

[ayrkm]

yes, that I agree, it may break between iOS versions. i'm all ear to other approach if any

[sandofsky]

You file a ticket with Apple and stick with documented APIs.

[ayrkm]

will do and hope Apple may do something about that.

until then, will stick to current solution and test ahead of any new iOS release.

[sandofsky]

You've decided on the path of higher maintenance, and you've increased the risk of Apple rejection.

Maybe this decision won't bite you, but this mentality will.

[ayrkm]

i keep my options open until I find a better solution.

i'm assuming engineers that build FB messenger, WhatsApp, Twitter etc. could be using similar approach, but I am more than happy to be proven wrong.