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+--- Forum: Objective-C (https://0day.red/Forum-Objective-C)
+--- Thread: Left Align Cells in UICollectionView (/Thread-Left-Align-Cells-in-UICollectionView)
RE: Left Align Cells in UICollectionView - noisette522 - 07-21-2023
Based on answers here, but fixed crashes and aligning problems when your collection view is also got headers or footers. Aligning left only cells:
```swift
class LeftAlignedCollectionViewFlowLayout: UICollectionViewFlowLayout {
override func layoutAttributesForElements(in rect: CGRect) -> [UICollectionViewLayoutAttributes]? {
let attributes = super.layoutAttributesForElements(in: rect)
var leftMargin = sectionInset.left
var prevMaxY: CGFloat = -1.0
attributes?.forEach { layoutAttribute in
guard layoutAttribute.representedElementCategory == .cell else {
return
}
if layoutAttribute.frame.origin.y >= prevMaxY {
leftMargin = sectionInset.left
}
layoutAttribute.frame.origin.x = leftMargin
leftMargin += layoutAttribute.frame.width + minimumInteritemSpacing
prevMaxY = layoutAttribute.frame.maxY
}
return attributes
}
}
```