auto scroll for UITextView using swift (IOS app)

Question

I cant seem to find a right solution to autoscroll UITextView using Swift.

For my app I am receiving constant data from BT, and I am updating it on a UITextView. However, when the UITextView will reach the latest updated line, I would have to manually scroll.

What I'm trying to achieve is to keep the last added line to the UITextView visible. (using swift)

I'm not at my computer right now so all I can do is you could try using a timer and increase the contentOffset. This will make it auto scroll. And when you reached the end, you can invalidate the timer to stop the scroll. — Eendje
– Eendje, Commented Jan 26, 2016 at 3:59

SwiftArchitect · Accepted Answer · 2016-01-26 16:19:07Z

18

This will scroll to the bottom of a UITextView, with an animation:

let range = NSMakeRange(textView.text.characters.count - 1, 0)
textView.scrollRangeToVisible(range)

answered Jan 26, 2016 at 16:19

SwiftArchitect

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Arthur Stepanov · Accepted Answer · 2020-06-17 13:02:28Z

5

Swift 5 update for @SwiftArchitect answer:

let range = NSRange(location: textView.text.count - 1, length: 0)
textView.scrollRangeToVisible(range)

answered Jun 17, 2020 at 13:02

Arthur Stepanov

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Strong84 · Accepted Answer · 2017-10-22 05:12:27Z

1

You could also set contentOffset:

let point = CGPoint(x: 0.0, y: (textView.contentSize.height - textView.bounds.height))
textView.setContentOffset(point, animated: true)

It will scroll to the bottom.

answered Oct 22, 2017 at 5:12

Strong84

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