ViewStub 与 View.GONE
据我了解，ViewStub 和 GONE 的 View 都不参与测量和布局过程（或无论如何渲染）。
渲染性能有区别吗？关于何时使用哪个的最佳实践是什么？
As far as I undestand, neither a ViewStub nor a View that's GONE participate in the measure and layout passes (or rendering anyway).
Is there a difference in rendering performance? What's the best practice about when to use which?
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当您膨胀视图时，渲染性能就会显现出来。
我的猜测是，通过 XML 或更改可见性来扩充 ViewStub 比扩充 View 便宜得多。当您需要添加/删除（不确定）视图（例如，向给定联系人添加电话号码）时，尤其需要使用 ViewStub。希望这就是您正在寻找的。
The rendering performance comes into picture when you are inflating the views.
My guess is that its much cheaper to inflate a ViewStub than to inflate a View, either from XML or by changing visibility. ViewStub is especially used when you need to add/remove (indefinite) views (eg. add phone numbers to a given contact). Hope this is what you were looking for.