How do I set auto height on my CollectionViewCell - ios

Question

I've been searching for days these answers and some how I found it but I don't know how to configure properly to my project.
I followed this awesome video iOS Dev 11: CollectionViews | Swift 5, XCode 11
This video works perfectly to me, but when we reach sizeForItemAt method he declares a static value. For my project, width could be static and I was able to fix according the result I want, but I am still facing difficult to adapt the height. I want it to be equal the text size of my label text, I want I result like this: final result
So, I know that I need to to this on sizeForItemAt method but I don't know how, here is how my code looks like:
FactsCollectionViewCell:
class FactsCollectionViewCell: UICollectionViewCell {
#IBOutlet weak var lbFactsText: UILabel!
#IBOutlet weak var lbCategories: UILabel!
func setup(with facts: FactsData?, index: Int) {
let result = facts!.result[index]
lbFactsText.text = result.value
print(result.value)
if let category = result.categories.first {
lbCategories.text = category!.uppercased()
lbCategories.sizeToFit()
} else {
lbCategories.text = "UNCATEGORIZED"
lbCategories.sizeToFit()
}
}
#IBAction func btShare(_ sender: UIButton) {
// still working on this button
}
}
And this is my MainViewController:
class MainViewController: UIViewController {
var facts: FactsData?
var factsManager = FactsManager()
var numberOfCV = 0
var resultValue: String = ""
#IBOutlet weak var cvFacts: UICollectionView!
#IBOutlet weak var sbSearchFacts: UISearchBar!
#IBOutlet weak var nbMainScreen: UINavigationBar!
override func viewDidLoad() {
super.viewDidLoad()
cvFacts.dataSource = self
cvFacts.delegate = self
cvFacts.collectionViewLayout = UICollectionViewFlowLayout()
sbSearchFacts.isHidden = true
}
#IBAction func search(_ sender: UIBarButtonItem) {
sbSearchFacts.resignFirstResponder()
sbSearchFacts.isHidden = !sbSearchFacts.isHidden
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "segueMainToFact" {
let vc = segue.destination as! FactViewController
vc.receivedValue = resultValue
}
}
}
extension MainViewController: UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return numberOfCV
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = cvFacts.dequeueReusableCell(withReuseIdentifier: "FactsCollectionViewCell", for: indexPath) as! FactsCollectionViewCell
cell.setup(with: facts, index: indexPath.row)
return cell
}
}
// SearchBar delegate extension for when tap to search button
extension MainViewController: UISearchBarDelegate {
func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
sbSearchFacts.isHidden = true
sbSearchFacts.resignFirstResponder()
if let realFact = sbSearchFacts.text {
factsManager.factsRequest(realFact) { (facts) in
self.facts = facts
self.numberOfCV = self.facts!.total
DispatchQueue.main.async {
self.cvFacts.reloadData()
}
} onError: { (error) in
print(error)
}
}
}
}
// Extension to configure cell sizes
extension MainViewController: UICollectionViewDelegateFlowLayout {
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
let width = view.frame.size.width
return CGSize(width: width - 40, height: //HERE I NEED TO CALCULATE THE HEIGHT BUT I DONT KNOW HOW)
}
}
// Extension for when you tap the cell
extension MainViewController: UICollectionViewDelegate {
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
let index = indexPath.row
let result = facts?.result[index]
resultValue = result!.value
}
}
Does anyone has a tip to fix it?