Placing a margin around each edge of the UICollectionView

Question

When the UICollectionView is populated with items they always go right to the edges of the UICollectionView like so:

---------------
|X X X X X X X|
|X X X X         


        

Answer 1

You can make use of the following function.

- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section
  {
      return UIEdgeInsetsMake(50, 50,15,50);
  }

You will have to play around with the number to figure out how to force the collectionviewCells in a single line.

UIEdgeInsetsMake ( CGFloat top,CGFloat left,CGFloat bottom,CGFloat right); 

For Swift 3

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
    return UIEdgeInsetsMake(10, 4, 10, 4)
}