UIScrollView滚动条的宽度和高度？

Question

Is there a way to reference the width and height of the scrollbars in a UIScrollView? I see content size and content offset, but neither seems like it will help.

TL;DR
To keep track of the lowest Y position of the views I've added to a UIScrollView , I use:

lowestView = scrollView.subviews.sorted(by: { $0.frame.maxY < $1.frame.maxY }).last?.frame.maxY ?? 0

But this doesn't take into account the fact that a UIScrollView already includes two subviews for the scrollbars - which, of course, messes up the above calculation.

What I'd really like to do is filter the scrollbars from the subview. Which would look something like:

let goodViews = scrollView.subviews.filter( {$0.frame.height > 7 && $0.frame.width > 7} )

Except I know that hard coding those values will get me in trouble someday, which is why I'd like the reference instead. Thanks!

Answer 1

Here is an option:

let bv = scrollView.showsVerticalScrollIndicator
let bh = scrollView.showsHorizontalScrollIndicator

scrollView.showsVerticalScrollIndicator = false
scrollView.showsHorizontalScrollIndicator = false

let lowestView = scrollView.subviews.sorted(by: { $0.frame.maxY < $1.frame.maxY }).last?.frame.maxY ?? 0

scrollView.showsVerticalScrollIndicator = bv
scrollView.showsHorizontalScrollIndicator = bh

I only did a quick test, but seems reliable.