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UICollectionView scroll to make section header visible
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/** | |
Scroll to make the the given section header visible. | |
The function scrollToItemAtIndexPath will scroll to the item and hide the section header. | |
Swift 3. | |
*/ | |
func scrollToSection(_ section:Int) { | |
if let cv = self.collectionView { | |
let indexPath = IndexPath(item: 1, section: section) | |
if let attributes = cv.layoutAttributesForSupplementaryElement(ofKind: UICollectionElementKindSectionHeader, at: indexPath) { | |
let topOfHeader = CGPoint(x: 0, y: attributes.frame.origin.y - cv.contentInset.top) | |
cv.setContentOffset(topOfHeader, animated:true) | |
} | |
} | |
} |
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