Change UICollectionViewCell height to fit UILabel

Question

I am trying to make my cell height size fit with label. The thing is that the label text is set in the cellForItemAtIndexPath, and if i have understood correct, sizeForItemAtIndexPath runs before the cellForItemAtIndexPath. This is something i have tried so far:

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell
    {
        let imageCell = collectionView.dequeueReusableCellWithReuseIdentifier("imageCell", forIndexPath: indexPath) as? CollectionViewCell

        imageCell!.imageText.text = post.text // This set the UICollectionView Cell text

        imageCell!.frame.size.height = (imageCell!.frame.size.height) + (imageCell!.imageText.frame.size.height)

        return imageCell!
    }

I am not using Auto Layout.

Any suggestions why the cell height not changes depending on the label?

score 1 · Answer 1 · edited May 23 '17 at 12:16

1

This used to be an annoying problem to solve, but it gets substantially easier if you're able to use Auto Layout. See this answer for a thorough walkthrough.

edited May 23 '17 at 12:16

Community

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answered Dec 11 '15 at 23:18

TwoStraws

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Problem i am not using Auto Layout: http://s8.postimg.org/zcok16nsl/Screen_Shot_2015_12_12_at_00_42_49.png – Roduck Nickes Dec 11 '15 at 23:43

Tim · Answer 2 · 2015-12-12T23:49:38.743

-1

Even if sizeForItemAtIndexPath runs first, that's the place to set the size of the cell. cellForItemAtIndexPath cannot change the size.

In sizeForItemAtIndexPath you need to find out the image size for each cell, then return that size.

Something like this:

func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
    let imageCell = collectionView.cellForItemAtIndexPath(indexPath) as! CollectionViewCell
    let size = CGSize(width: imageCell.frame.width, height: imageCell.frame.size.height + imageCell.imageText.frame.size.height)
    return size

}

edited Dec 12 '15 at 23:49

answered Dec 11 '15 at 23:04

Tim

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The question is how i should do it? – Roduck Nickes Dec 12 '15 at 00:24
I updated, but really, it's the same code you had, just moved to the other function. – Tim Dec 12 '15 at 00:55
I get error: http://s27.postimg.org/vzvdugloj/Screen_Shot_2015_12_12_at_02_04_33.png - Did you ment to add the `imageCell!.frame.size.height = ` also? – Roduck Nickes Dec 12 '15 at 01:05
And the error message you posted tells you the correct answer. You just had to convert to a CGSize. Updated – Tim Dec 12 '15 at 06:54
Bah, that also crashes: http://s27.postimg.org/8ckwubrc3/Screen_Shot_2015_12_12_at_18_56_54.png – Roduck Nickes Dec 12 '15 at 17:57
Cast to your custom cell type. Updated. – Tim Dec 12 '15 at 23:49
Still getting that crash error: http://s1.postimg.org/fmsvm1pgf/Screen_Shot_2015_12_13_at_20_03_54.png – Roduck Nickes Dec 13 '15 at 19:04

Change UICollectionViewCell height to fit UILabel

2 Answers2