Introduction - If you have any usage issues, please Google them yourself
Description: (iOS5+ ARC versions) implement a custom UILabel, make changes to text and animated transitions. For example: cross-fade crossfade scale out scaling fade scroll up scroll up custom custom rotation. Originally UILabel s content is modified is no animation, I feel very stiff, and the Demo will give UILabel add some brilliant features, when the label content is modified, this time there is an animated transition, for example, when we can modify the contents of the cross-fade, or modified so that the new content scaling out, but also the content of the new scroll or rotate appears.