问题描述
我在 nib 的 view 中放置了一个 UIScrollView，并将其链接到一个 IBOutlet 属性.
I put a UIScrollView in my nib's view, and linked it to a an IBOutlet property.
现在，当我在 viewDidLoad 方法中执行此操作时，它似乎对 contentSize 没有影响:
Now, when I do this in my viewDidLoad method, it seems to have no effect on the contentSize:
self.sv.backgroundColor = [UIColor yellowColor]; // this works
CGSize size = CGSizeMake(1000.0, 1000.0);
[self.sv setContentSize:size]; // this does not
它的行为就好像 contentSize 与框架相同.这是怎么回事?当我关闭自动布局时，这开始工作.为什么?
It behaves as if the contentSize was the same as the frame. What's going on?
This started working when I turned off AutoLayout. Why?
推荐答案
我也遇到了同样的问题.UIScrollView 的自动布局搞砸了.
I had the same problem. Auto Layout for UIScrollView is messed up.
解决方法:将 UIScrollView 中的所有内容放入另一个 UIView，并将该 UIView 作为 UIScrollView 的唯一子项.然后你可以使用自动布局.
Work around: Put everything in the UIScrollView into another UIView, and put that UIView as the only child of the UIScrollView. Then you can use Auto Layout.
如果接近尾声的事情搞砸了(无论您的 UIScrollView 滚动哪个方向的尾端)，请将最后的约束更改为尽可能低的优先级.
If things near the end is messed up (the end of whichever direction your UIScrollView scrolls), change the constraint at the end to have the lowest possible priority.
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