iOS: different addSubview behavior between iOS 4.3 and 5.0

Question

while coding in iOS 4.3 before, I found while add a view controller\'s view to another view with [superview addSubView:controller.view], the controller instance wil

Answer 1

By this method u know which os u use and put condition if is less then 5.0 or other one

[[UIDevice currentDevice] systemVersion]