CODEWITHSUNDEEP
iosswiftinterface-builder
simplexity
simplexity

Reputation: 1557

Resizing UiView Height With Dynamic Content in UIScrollView (Swift)

I have UIView inside of a UIScrollView and have connected them from Interface Builder:

@IBOutlet weak var articleScroll: UIScrollView!
@IBOutlet weak var articleSubview: UIView!

I have dynamic content going into the UIView and I want its height to be drawn as large as the content (so that it scrolls). I thought that using .last to find origin.y in combination with the height of the content would do it:

var scroll = self.articleSubview
var lastItem = scroll.subviews.last as! UIView
var lastOriginY = lastItem.frame.origin.y
var lastHeight = lastItem.frame.size.height
var finalHeight = lastOriginY+lastHeight

    scroll.frame = CGRectMake(0 , 0, lastItem.frame.size.width, finalHeight)

The build succeeded but nothing scrolled. I tried adding:

articleScroll.userInteractionEnabled = true

But it didn't make a difference. What am I doing wrong?

UPDATE:

It has been solved. The actual scroll view has to be resized, not the child view. Do not use the scroll.frame, instead "contentSize" on the UIScrollView was the way to go.:

self.articleScroll.contentSize = CGSizeMake(lastItem.frame.size.width, finalHeight)

Upvotes: 2

Views: 9935

Answers (2)

matt
matt

Reputation: 535989

The scrollability (is that a word?) of a UIScrollView depends upon its contentSize in relation to its bounds size. The idea is to make the contentSize embrace the content; if it is bigger than the scroll view's bounds size, the user can scroll.

Your code doesn't set the contentSize anywhere. It needs to!

Upvotes: 3

Nekak Kinich
Nekak Kinich

Reputation: 934

Resizing your scroll, scroll view have a method called scroll.scrollRectToVisible(<rect: CGRect>, animated: <Bool>) to scroll to the frame.

Upvotes: 0

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