👀 Views: 41 💬 Answers: 1 📅 Created: 2025-06-12

ios uicollectionview uicollectionviewlayout swift

I'm getting frustrated with I tried several approaches but none seem to work. I'm currently developing a custom `UICollectionViewLayout` for a unique grid layout in my iOS app, and I've run into a frustrating issue with content insets. My layout seems to ignore the content insets set on the `UICollectionView`. Despite specifying insets in the collection view’s layout attributes, the cells are rendered right at the edges of the collection view without any padding. Here’s a snippet of my layout code where I set the attributes for each item: ```swift override func layoutAttributesForElements(in rect: CGRect) -> [UICollectionViewLayoutAttributes]? { var attributesArray: [UICollectionViewLayoutAttributes] = [] for item in 0..<collectionView.numberOfItems(inSection: 0) { let indexPath = IndexPath(item: item, section: 0) if let attributes = layoutAttributesForItem(at: indexPath) { attributesArray.append(attributes) } } return attributesArray } override func layoutAttributesForItem(at indexPath: IndexPath) -> UICollectionViewLayoutAttributes? { let attributes = UICollectionViewLayoutAttributes(forCellWith: indexPath) let cellWidth: CGFloat = (collectionView.bounds.width - (2 * sectionInset.left)) / 2 let cellHeight: CGFloat = 200.0 let xPosition = sectionInset.left + (CGFloat(indexPath.item % 2) * (cellWidth + sectionInset.right)) let yPosition = sectionInset.top + (CGFloat(indexPath.item / 2) * (cellHeight + sectionInset.bottom)) attributes.frame = CGRect(x: xPosition, y: yPosition, width: cellWidth, height: cellHeight) return attributes } ``` I’m using a custom `sectionInset` defined as follows: ```swift let sectionInset = UIEdgeInsets(top: 20, left: 20, bottom: 20, right: 20) ``` Despite setting the section insets, the cells don't seem to respect this configuration, which leads to overlapping content at the edges. I’ve tried calling `invalidateLayout()` after setting the insets, but it hasn’t made any difference. I also made sure that the collection view's `contentInsetAdjustmentBehavior` is set to `.always`, yet the issue persists. Has anyone encountered this problem or have insights on how to ensure that my custom layout respects the `sectionInset`? Any suggestions would be greatly appreciated. I'm working in a Debian environment. I'm coming from a different tech stack and learning Swift. What are your experiences with this?