This works for me:
Code:
mySlider.hidden = YES;
A tip; if you intend to hide the slider and another view - such as the UILabel you described - it is easier to just drag a UIView in Interface Builder to your project and then add all those objects as subviews to that view. If you hide that one they will all hide. This works since they become subclassed to that specific UIView and thus inherit the given hidden property of their parent class.