How to properly morph text in iOS?
问题 I'm desperately trying to morph a smallLabel into a bigLabel . By morphing , I mean transforming the following properties from one label to match the respective properties of the other label, with a smooth animation: font size font weight frame (i.e. bounds and position) The desired effect should look similar to the animation that is applied to the navigation controller's title label when using large titles: Now I'm aware of last year's WWDC session Advanced Animations with UIKit where they