SwiftUI: how to detect when List is scrolled?

Question

I have a view with a search bar at the top and a SwiftUI List below. I need to detect when the List is scrolled so I can dismiss the search bar keyboard. How would I call some code when the List is scrolled? Thanks!

score 33 · Accepted Answer · edited Aug 23 '22 at 13:37

33

I recommend to use simultaneousGesture modifier as in below:

List {
  // ... your list items
}
.simultaneousGesture(DragGesture().onChanged({ _ in
    // if keyboard is opened then hide it
}))

Update: verified with Xcode 13.3 / iOS 15.4 - for the use-case formulated by PO still works fine.

edited Aug 23 '22 at 13:37

Martijn Pieters

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answered Jan 07 '20 at 03:36

Asperi

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2

Anyone have an explanation of what's going on here. i.e. why this works – Bret Jul 25 '20 at 16:06
2

Doesn't work for me – leonboe1 Oct 24 '20 at 14:51
1

The `onChanged` closure is called only once. What is the reason for this? – PGDev Jul 29 '21 at 12:08
2

This solution prevents any swipeActions from working smoothly – Pig Dog Bay Jun 07 '22 at 12:38

SwiftUI: how to detect when List is scrolled?

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