@Cosmo My collection items contain label, so I don’t know the exact sizes before hand.
@Gary In my case I actually also need to display section headers and section index titles, so using just a collection view probably won’t be easy I guess. — From the suggestions it seems it might be something very difficult to pull off. I wonder if anyone ever reverse-engineered multiline UILabels to see how table cells can have correct heights containing them. > On 10 Mar 2018, at 12:14 AM, Cosmo Birch <minonom...@gmail.com> wrote: > > Where I work we have spent a fair amount of trying unsuccessfully to get > self-sizing collection view cells to work as described by Apple documentation > with UICollectionViews that have any sort of complexity. I would suggest > trying to implement the sizeForItemAtIndexPath delegate method to see if that > solves your problem. Sorry if the name of the method is slightly off. I can’t > look it up at the moment. > >> On Mar 9, 2018, at 8:00 AM, Glen Huang <hey...@gmail.com> wrote: >> >> Hi, >> >> I asked a question about putting UICollectionView within UITableViewCell on >> Apple Developer Forums (https://forums.developer.apple.com/thread/98176), >> but it doesn’t get many replies. I’m not sure if it’s ok to repost the >> question here. I apologize if it’s not. >> >> Here is the question: >> >> Hi, I'm trying to create a table view with cell content like this >> >> | Label | >> | CollectionItem 1 CollectionItem 2 CollectionItem 3 | >> | CollectionItem 4 | >> >> Collection view item should auto wrap at cell end, both the collection view >> and table view use automatic height. >> >> I can somewhat achieve this effect by doing: >> put the label and the collection view in a vertical stack view, make the >> stack view's each edge touch table cell's corresponding edge. >> disable collection view scrolling. >> collection view's intrinsicContentSize returns layout's >> collectionViewContentSize value. >> in table cell's prepareForReuse method, I make the collection view reload >> its data. >> >> But the problem comes when each table cell can contain different number of >> collection items: some table view cells have incorrect heights, clipping its >> collection view. My guess is that when table cells get reused, they don't >> take collection view's new intrinsicContentSize into account. >> >> I tried calling sizeToFit/layoutIfNeeded/updateConstraints in cell's >> prepareForReuse method, none of them works. >> >> If I replace the collection view with a multiline label, and make each cell >> contain different length of text, the cells all have correct heights. >> >> I wonder why label are able to correctly resize cells? how can I make >> collection views do the same? >> > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
