How to embed UITextView in a ContentView if I use UICollectionViewCompositionalLayout.list.

Question

gaussblurinc OP

Created Sep ’20

Replies 2

Boosts 0

Participants 2

Hello!

Description

I have a ContentView which contains UITextView. I would like to use this ContentView in UICollectionViewCell.

View Hierarchy

Code Block UICollectionView {
  MyContentView {
    UIStackView {
      UITextView
    }
  }
}

As you see I add additional UIStackView that embraces UITextView.

Problem

When I typing in UITextView, it doesn't grow at all. But if I press on cell and apply configuration is applied to content view, everything works fine and I get correct size of textView.

Code

Code Block class CustomConfigurationCell: UICollectionViewCell {
    override func updateConfiguration(using state: UICellConfigurationState) {
        super.updateConfiguration(using: state)
        backgroundConfiguration = CustomBackgroundConfiguration.configuration(for: state)
    }
}
class MyContentView {
    private var appliedConfiguration: CustomContentConfiguration!
    
    private func apply(configuration: CustomContentConfiguration) {
        guard appliedConfiguration != configuration else { return }
        appliedConfiguration = configuration
    }
}

What have I tried so far?

I added listeners for textViewDidChange and call all setNeedsUpdateConstraints, setNeedsLayout and other layout methods on both self ( ContentView ) and self.superview ( CustomConfigurationCell ).

Boost

Answer 1

Engineer OP

Apple

Sep ’20

The CustomListCell class of Implementing Modern Collection Views shows a way to customize a list cell.

0

Answer 2

gaussblurinc OP

Sep ’20

It doesn't help.
Could you show an example where CustomListCell with embedded UITextView expanding on typing with any layout in UICollectionView?

0