Animating Frame of UILabel smoothly

Question

I\'ve been trying to figure out a decent way to smoothly animate a frame size change on a UILabel, without a weird starting jump redraw. What happens by default is that when

Answer 1

I found that UIlabel frame animations are weird - their size is set immediatly to the end size and the text is rendered for that size. After that only the position change is animated, which means that if the destination size is (0,0) then the label disappears immediately. To circumvent this limitation I have placed the label inside a view of the same size that clips subviews, disabled autoresizing for the label, and I'm animating the label's superview instead of the label itself. The end result is that the label frame is fully animated throughout but the contained text isn't re-rendered with, say, a different font size nor does text truncation change. It's still not perfect, but it's fit for my purpose.

Initial frame:

During animation:

Animation ended: