是否有当自动布局已经完成了火灾的是iOS的方法？ [英] Is there an iOS method that fires when Autolayout has completed?

问题描述

我有一个iOS应用程序中，我需要知道，当一个新的观点是在屏幕上完全可见;也就是说，当自动布局已经完成它的计算和图已完成绘图

I have an iOS app in which I need to know when a new view is completely visible on-screen; that is, when Autolayout has finished its calculations and the view has finished drawing.

ViewDidAppear似乎火以及之前的观点是完全可见。如果我关掉自动布局，时机似乎人类感知去远排队，但我需要使用自动布局在这个项目中（所以这不是一个解决方案...只是一个测试）。

ViewDidAppear seems to fire well before the view is completely visible. If I turn off Autolayout, the timing seems to line up as far as human perception goes, but I need to use Autolayout in this project (so this isn't a solution...just a test).

有没有当自动布局完成计算将触发任何方法？或者说，火灾时的观点实际上是可见的（因为ViewDidAppear不适合此工作）？

Is there any method that fires when Autolayout is done calculating? Or another method that fires when the view is ACTUALLY visible (since ViewDidAppear doesn't work for this)?

谢谢！

推荐答案

我使用viewDidLayoutSubviews这一点。苹果的文件说，调用，以通知其观点，刚刚公布其子视图的视图控制器。

I'm using viewDidLayoutSubviews for this. Apple's documentation says, "Called to notify the view controller that its view has just laid out its subviews."

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