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Fix scroll to last item to take section inset into account #1832

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Fix scroll to last item to take section inset into account #1832

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beb1ae7
scrollToLastItem change
hidoon Feb 20, 2024
c5bf355
scrollToLastItem bug fix
hidoon Feb 20, 2024
40c5298
bug fix
hidoon Feb 20, 2024
f8ae2d4
remove self
hidoon Feb 20, 2024
8cede75
minor change
hidoon Feb 20, 2024
f848633
Merge branch 'main' into main
Kaspik Feb 21, 2024
83a8635
Merge branch 'main' into main
hidoon Feb 21, 2024
5c2a439
Merge branch 'main' into main
Kaspik May 17, 2024
c897d5f
Merge branch 'main' into main
Kaspik Jul 11, 2024
f03bffb
Merge branch 'main' into main
Kaspik Jul 11, 2024
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scrollToLastItem bug fix
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@hidoon
hidoon authored Feb 20, 2024
commit c5bf355a5238fa51a9df079a9b606bdd63ec8a91
13 changes: 7 additions & 6 deletions Sources/Views/MessagesCollectionView.swift
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@fukemy fukemy Sep 27, 2024

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I dont think 3 times called scroll function is better

Original file line number Diff line number Diff line change
Expand Up @@ -84,23 +84,24 @@ open class MessagesCollectionView: UICollectionView {
guard let indexPath = indexPathForLastItem else { return }

// Store the current content offset
let originalOffset = collectionView.contentOffset
let originalOffset = self.contentOffset

// Scroll to the item without animation to get the desired offset
collectionView.scrollToItem(at: indexPath, at: pos, animated: false)
let targetOffset = collectionView.contentOffset
self.scrollToItem(at: indexPath, at: pos, animated: false)
let targetOffset = self.contentOffset

// Immediately reset the content offset to the original, without animation
collectionView.setContentOffset(originalOffset, animated: false)
self.setContentOffset(originalOffset, animated: false)

// Calculate the adjusted offset, considering the section insets
let sectionInsetBottom = (collectionView.collectionViewLayout as? UICollectionViewFlowLayout)?.sectionInset.bottom ?? 0
let sectionInsetBottom = (self.collectionViewLayout as? UICollectionViewFlowLayout)?.sectionInset.bottom ?? 0
let adjustedOffset = CGPoint(x: targetOffset.x, y: targetOffset.y + sectionInsetBottom)

// Scroll to the adjusted offset, with or without animation based on the method parameter
collectionView.setContentOffset(adjustedOffset, animated: animated)
self.setContentOffset(adjustedOffset, animated: animated)
}


public func reloadDataAndKeepOffset() {
// stop scrolling
setContentOffset(contentOffset, animated: false)
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