解决UIScrollView中添加子控件出现“UIScrollView Scrollable Content Size Ambiguity”的办法

So I just sorted out in this way:

1. Add in the UIScrollView a UIView (we can call that contentView);

2. In this contentView, set top, bottom, left and right margins to 0 (of course from the scrollView which is the superView); Set also align center horizontally and vertically;

Finished.

Now you can add all your views in that contentView, and the contentSize of the scrollView will be automatically resized according with the contentView.

Update:

Some special case is covered by this video posted by @Sergio in the comments below.