RemoveFromSuperview doesn't work?

Oscar is right. You have to update the interface on the main thread. Figured I'd add in some code to help.

You cannot update the UI using a secondary thread, whenever your thread is doing UI updates you must call the main thread.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.