UIActionSheet in iOS 8

UIActionSheet and UIActionSheetDelegate is deprecated in iOS 8. To create and manage action sheets in iOS 8 / later, we need to use UIAlertController with a preferredStyle of UIAlertControllerStyleActionSheet because if we have used the same in our previous code it will simply not appear in iOS 8. Don't panic! It won't make a crash ;)
PFB - A quick adaptation for UIActionSheet/Delegate