使用自动布局的自定义集合视图单元格的动态高度

Question

I had created a custom collection view cell. It has a UILabel , UIView , UIButton and then UITextView .

Requirements are :

1. UILabel's text size can be anything. Based on that it's content size label must re-size . It is working properly.
2. any number of views can be added to UIView. Based on that this UIView must be re-size .
3. UIButton is just a normal button. when we click on it, the below TextView will toggle.

The constraints that I applied are:

Answer 1

use this method and calculate the size that is appropriate for you and return it.

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
    let Labell : UILabel = UILabel()

    Labell.text =   self.items[indexPath.item]
    let labelTextHeight =   Labell.intrinsicContentSize.height
    //calculate size for UIView, UIButton, TextView and then add it
    return CGSize(width: /*fix width*/, height: labelTextHeigh + /*your UIView height and other height*/)

}

don't forget to extend your viewController from UICollectionViewDelegateFlowLayout