Sizing a UICollectionViewCell that contains UITextView to fit the contentSize
cocoa-touch, ios, uicollectionview, uicollectionviewcell, uitextview
Solution
You could set the collection view's delegate to also be the text view's delegate, and in `textViewDidChange:` update a property holding an up-to-date height calculated from the `textView.textContainer` and `textView.textContainerInset`. Then you simply reference this property in `sizeForItemAtIndexPath:`. In this case you'd also want to do some type of reloading of the cell and possibly layout invalidation every time the value of that property is about to change.
Problem
I have a UICollectionView, where one of my UICollectionViewCells contains a UITextView. My goal is to autosize the UICollectionViewCell to fit the content of the text view. I have overridden collectionView:sizeForItemAtIndexPath, but I'm struggling to get at the content height value for the text view without creating an infinite loop. Typically to autosize a UITextView, I would do something like the following: ``` CGRect frame = textView.frame; frame.size.height = textView.contentSize.height; textView.frame = frame; ``` But to do that within sizeForItemAtIndexPath, I need a pointer to the UITextView. To get that pointer, I find myself calling cellForItemAtIndexPath, but since that calls sizeForItemAtIndexPath it's an infinite loop. I suspect I'm missing a way to pre-size the view and have the UICollectionView just respect that, but it appears to default to the 50x50 value that UICollectionViewFlowLayout defines. Other (hack) ideas that I'm loathe to do: - Have another hidden UITextView that I can load the content into and get it's height. - Implement equivalent logic to calculate the content height on my own. Thanks!