Determine if UIView is visible to the user?

Question

is it possible to determine whether my UIView is visible to the user or not?

My View is added as subview several times into a Tab Bar

Answer 1

In case you are using hidden property of view then :

view.hidden (objective C) or view.isHidden(swift) is read/write property. So you can easily read or write

For swift 3.0

if(view.isHidden){
   print("Hidden")
}else{
   print("visible")
}