实现各种各样的图形、动画效果。例子中展现的是各种各样视图出现和消失的例子，例如视图的淡入淡出、飞进飞出等等。-FTUtils iPhone Utility Code Library =================================== The code in FTUtils is common utility code extracted from [Free Time Studios](http://www.freetimestudios.com/) iPhon