UICollectionView adds top margin

Question

I want to put a UICollectionView control that shows thumbs horizontally (only a single line of thumbs). For some reason the UICollectionView push the thumbs 44 pixels down,

Answer 1

Swift 3:

First you want to set the viewControllers automaticallyAdjustsScrollViewInsets to false:

self.automaticallyAdjustsScrollViewInsets = false

Then, you should be able to adjust the edge insets accordingly:

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
    //top, left, bottom, right
    return UIEdgeInsets(top: 10, left: 0, bottom: 0, right: 0)
}