UICollection view cell with large text problem - ios

Question

I have a cell with description(UILabel) and two buttons after the description I use this to get the description text height
let constraintRect = CGSize(width: maxWidth, height: .greatestFiniteMagnitude)
let boundingBox = self.boundingRect(with: constraintRect, options: [.usesLineFragmentOrigin, .usesFontLeading], attributes: [NSAttributedStringKey.font: font], context: nil)
return ceil(boundingBox.height)
but the problem is when I do any action on the buttons with a huge description cell the actions is not trigged this is a ver annoying a problem and tried a lot of solutions but nothing works any help ?
this is where I set the height for cells
override func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: IndexPath) -> CGSize {
if self.items.count < 1 {
return CGSize(width: (self.view.bounds.width - 16), height: 200)
}
if indexPath.item < self.items.count {
let item = self.items[indexPath.item]
var h = CGFloat(0)
h = item["description"].stringValue.height(with: (self.collectionView.bounds.width - 44), font: UIFont(name: "Helvetica", size: self.contentLabelFontSize)!)
self.descriptionHeight = h
if item["images"].isEmpty == false {
if item["images"][0]["original"].stringValue != "" {
let hi = 300
let im_h = CGFloat(hi)
h += im_h
}
}
if self.type == "events" {
h += 260
}
else if item["type"].stringValue == "event" {
h += 250
}
else {
h += 170
}
let size = CGSize(width: (self.view.bounds.width - 16), height: h)
return size
}
return CGSize(width: (self.view.bounds.width - 16), height: 50)
}
And this is where is set the height of label at the PostCell class :
self.contentLabel.frame = CGRect(x: 10, y: 110, width: (self.bounds.width - 20), height: (self.bounds.height - self.imageHeight - 170))