ios UICollectionView separation on top / bottom between cells - ios

Question

I have a collection view, is working fine, and I have adjusted the separation for the X padding,
and it works fine,
but for the Y padding between cells, doesn't seem to adjust to NO separation
This is my code for the layout
UICollectionViewFlowLayout *layoutItem=[[UICollectionViewFlowLayout alloc] init];
layoutItem.sectionInset = UIEdgeInsetsMake(0, 0, 0, 0);
So how can I set the separation on top / bottom to 0px? Between cells?,
thanks!

Answer 1

you will see only top y padding at first time.
And For showing bottom y padding you need more data that CollectionView frame height. When you scroll up collection view you will see bottom y padding.
I used collectionView like this
https://stackoverflow.com/a/17856406/1305001
When I set
- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section
{
return UIEdgeInsetsMake(60, 10, 50, 10);
}
The output will come as First time..
When you scrolled up collectionView you will see bottom padding..
Use this for verticle line spacing between cells
- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section
{
return 5;
}
Will look like

Answer 2

You can also do it a much simpler way using the collection view flow layout.
Set up the flow layout (remember to add the delegate in your header):
UICollectionViewFlowLayout * stickerFlowLayout = [[UICollectionViewFlowLayout alloc] init];
stickerFlowLayout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
**stickerFlowLayout.minimumLineSpacing = 10;**
stickerFlowLayout.minimumInteritemSpacing = 5;
stickerFlowLayout.sectionInset = UIEdgeInsetsMake(10, 25, 20, 25);
// Set up the collection view
collectionView = [[UICollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:stickerFlowLayout];
collectionView.delegate = self;
collectionView.dataSource = self;
etc
As you can see we can easily set the line spacing using:
**stickerFlowLayout.minimumLineSpacing = 10;**
We can also alter the other attributes
stickerFlowLayout.minimumInteritemSpacing = 5;
With the interitem spacing affecting the spaces between items (similar but different to the line spacing)
Using the flow layout you can save on a huge amount of code and set your collection view up programatically all in one place (just setting the inset and line spacing has immediately saved me two extra unneeded functions)