[UIView beginAnimations:context:]与[UIView animateWithDuration:animations:]值得注意的一个区别...

原文链接:http://longtimenoc.com/archives/uiview-beginanimationscontext%E4%B8%8Euiview-animatewithdurationanimations%E5%80%BC%E5%BE%97%E6%B3%A8%E6%84%8F%E7%9A%84%E4%B8%80%E4%B8%AA%E5%8C%BA%E5%88%AB 看过官方文档的

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