I need my collection view cell to be sized depending on different conditions.
That is what I use now:
func collectionView(
_ collectionView: UICollectionView,
layout collectionViewLayout: UICollectionViewLayout,
sizeForItemAt indexPath: IndexPath
) -> CGSize {
calculateNeededItemSize()
}
func calculateNeededItemSize() -> CGSize {
if tabsList.count > Constant.maximumFullscreenTabsCount {
return UICollectionViewFlowLayout.automaticSize
} else {
return CGSize(width: determineItemWidthForFullscreen(), height: frame.height)
}
}
func determineItemWidthForFullscreen() -> CGFloat {
return UIScreen.main.bounds.width / CGFloat(tabsList.count)
}
When I specify this line of code ‘return UICollectionViewFlowLayout.automaticSize’ with some test block it works fine. But otherwise I get a fatal error.
Also, when I I indicate this line
‘layout.estimatedItemSize = UICollectionViewFlowLayout.automaticSize’
without method sizeForItemAt it works but I just need my cell to have a different size depending on condition.
