Created
November 27, 2018 12:41
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UICollectionView spacing margins swift 4
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| / Create flow layout | |
| let flow = UICollectionViewFlowLayout() | |
| // Define layout constants | |
| let itemSpacing: CGFloat = 1 | |
| let minimumCellWidth: CGFloat = 120 | |
| let collectionViewWidth = collectionView!.bounds.size.width | |
| // Calculate other required constants | |
| let itemsInOneLine = CGFloat(Int((collectionViewWidth - CGFloat(Int(collectionViewWidth / minimumCellWidth) - 1) * itemSpacing) / minimumCellWidth)) | |
| let width = collectionViewWidth - itemSpacing * (itemsInOneLine - 1) | |
| let cellWidth = floor(width / itemsInOneLine) | |
| let realItemSpacing = itemSpacing + (width / itemsInOneLine - cellWidth) * itemsInOneLine / (itemsInOneLine - 1) | |
| // Apply values | |
| flow.sectionInset = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0) | |
| flow.itemSize = CGSize(width: cellWidth, height: cellWidth) | |
| flow.minimumInteritemSpacing = realItemSpacing | |
| flow.minimumLineSpacing = realItemSpacing | |
| // Apply flow layout | |
| collectionView?.setCollectionViewLayout(flow, animated: false) |
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