How to deinit CollectionView class - swift

Question

In my project has 2 ViewControllers (ViewController and DetailViewController). On the first there are table view in UIScrollview. On the second - buttons in UICollectionView with images and links. When i popup in DetailViewController many times, the app starts slow down, and i see the leak memory on graph. Also in Debug memory i see 18 object of CollectionViewCell and 3 DetailViewController, First leak of CellProps i solve by:
override func viewDidDisappear(_ animated: Bool) {
btnArray.removeAll()
How to solve this memory leak?
ViewController.swift
import UIKit
import BetterSegmentedControl
import Firebase
class ViewController: UIViewController, UIScrollViewDelegate, UITableViewDelegate {
var ICOListGoingOn = [ICOs] ()
var ICOListEnded = [ICOs] ()
var ICOListnotstarted = [ICOs] ()
#objc func reload(n: NSNotification) {
SaveLikedArray()
self.icoArraySort()
let slide = SlideView(frame: CGRect(x: view.frame.width * CGFloat(0), y: 0, width: view.frame.width, height: slideScrollView.frame.height))
slide.ICO = ICOListLiked
slide.delegate = self
slideScrollView.addSubview(slide)
}
extension ViewController: SlideViewDelegate{
func tableCellSelected(tableView: UITableView, indexPath: IndexPath, ico: ICOs) {
// print("Table tag : \(tableView.tag) Selcted Row : \(indexPath.row) Selected Value : \(ico)")
if let controller = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "DetailViewController") as? DetailViewController{
controller.ICO = ico
ICOId = ico.ICOId
self.navigationController?.pushViewController(controller, animated: true)
}
}
}
CollectionViewCell.swift
import UIKit
class CellProps {
var image: UIImage!
var url: String!
init (image: UIImage, url: String) {
self.image = image
self.url = url
}
deinit {
print("CellProps")
}
}
protocol CollectionViewCellDelegate {
func didButtonClick(url: String)
}
class CollectionViewCell: UICollectionViewCell {
var delegate: CollectionViewCellDelegate!
weak var CellItem: CellProps!
#IBOutlet weak var btnICONOutlet: UIButton!
#IBAction func btnICONAction(_ sender: Any) {
delegate?.didButtonClick(url: CellItem.url)
}
func setCell(cell: CellProps) {
CellItem = cell
CellItem.url = cell.url
btnICONOutlet.setImage(cell.image, for: .normal)
}
deinit {
print("CollectionViewCell")
}
}
DetailViewController.swift
import UIKit
class DetailViewController: UIViewController {
var ICO: ICOs!
var btnArray: [CellProps] = []
var timer: Timer?
#IBOutlet weak var outCollectioView: UICollectionView!
#IBOutlet weak var btnLike: LikeButton!
#IBAction func btnLikeAction(_ sender: Any) {
if !btnLike.isOn {
let ind = CountLikedArray(id: ICO.ICOId)
if ind != -1 {
ICOListLiked.remove(at: ind)
lblLike.text = "Вы еще не лайкнули проект"
}
}
if btnLike.isOn {
let ind = CountLikedArray(id: ICO.ICOId)
if ind == -1{
ICOListLiked.append(self.ICO)
lblLike.text = "Вам нравится проект"
}
}
NotificationCenter.default.post(name: NSNotification.Name(rawValue: "del"), object: nil)
}
func FillButtonArray () {
for value in ICO.news.values {
var btn : CellProps!
if value.lowercased().range(of:"t.me") != nil {
btn = CellProps(image: #imageLiteral(resourceName: "telegram"), url: value)
}
else if value.lowercased().range(of:"bitcointalk.org") != nil {
btn = CellProps(image: #imageLiteral(resourceName: "bitcoin"), url: value)
} else {
btn = CellProps(image: #imageLiteral(resourceName: "link"), url: value)
}
btnArray.append(btn)
}
}
deinit {
print("deinit detail")
}
override func viewDidDisappear(_ animated: Bool) {
btnArray.removeAll()
timer = nil
outCollectioView = nil
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
extension DetailViewController: UICollectionViewDelegate, UICollectionViewDataSource, CollectionViewCellDelegate {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return btnArray.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let ICONs = btnArray[indexPath.row]
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! CollectionViewCell
cell.setCell(cell: ICONs)
cell.delegate = self
return cell
}
func didButtonClick(url: String) {
let ICONURL = URL (string: url)!
UIApplication.shared.open(ICONURL as URL)
}
}
if i debug memory graph there are 3 DatailViewController, and 18 CollectionViewCell

Answer 1

I found lazy way to solve self of my problem, it's
outCollectioView.removeFromSuperview()
btnLike.removeFromSuperview()
But DetailViewController still increasing (((