什么是私有API
问题描述：
Apple引用私有API时的含义是什么？
What does Apple mean when they refer to private APIs?
答
未公开的API，或API未明确公开开发人员。
Undocumented API's, or API's they haven't explicitly exposed to the developer.
虽然你可以访问它们，但是没有保证这些API在将来的iOS修订版中不会改变，而且它是一种肯定的方法来获得你的app被拒绝。
While you may access them, there is no guarentee that these API's will not change in future revisions to iOS, plus it's a sure fire way to get your app rejected.