Justify last line of UICollectionView

Question

As far as I can see, UICollectionViewFlowLayout justifies all the lines of a section except the last one. So for example, if there aren't enough items to fill more than 1 line, the result is not justified.

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What is the simplest way to either configure or subclass UICollectionViewFlowLayout so that it also justifies the last line of a section?

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score 11 · Answer 1 · answered Nov 01 '12 at 22:24

11

This is not really possible, unfortunately. It's just not designed that way, unfortunately.

One thing I can think of that might work though is to add an extra item into the data source, returned at the end, which has a cell that is 0 pixels tall and the width of the collection view. That will force the last row to be a single row with just that one item on it and then all rows above it will be justified.

answered Nov 01 '12 at 22:24

mattjgalloway

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Width of extra item should be `(width of collection view) - (left and right content inset) - (left and right section inset)`. – Pang Jan 12 '16 at 05:15
How do you tell the cell to be the size of the collectionview? – Malachi Holden Mar 31 '21 at 19:39

score 5 · Accepted Answer · answered Nov 06 '12 at 19:46

You can do this by subclassing UICollectionViewFlowLayout and overriding layoutAttributesForElementsInRect: and layoutAttributesForItemAtIndexPath: to place all the items in the last line (except the first, which is already correct) where you want them, by changing the frame property of the item's UICollectionViewLayoutAttributes object.

Justify last line of UICollectionView

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