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

I know this is an old question, but don't forget that UICollectionView inherits from UIScrollView.

UICollectionView *collectionView = [[UICollectionView alloc] init];
collectionView.contentInset = UIEdgeInsetsMake(x.x, x.x, x.x, x.x);

// Swift 3 for good measure
let collectionView = UICollectionView()
collectionView.contentInset = UIEdgeInsets(top: x.x, left: x.x, bottom: x.x, right: x.x)

Be aware that both contentInset and sectionInset may change the spacing of cells in your view. For more information on that, see this post.