Swift CollectionView Reload Data Problems - swift

Question

I am using one collectionView and adding multiple data into it. I add numberOfSections to the collectionView with the title "CategoryTitle". I fill these sections with model [section]. I load two strings inside the model variable. So I add data like Model = [[www ..., www ...], [www., Www ..., www]]. But sometimes data is added, sometimes I get an error in numberOfItemsInSection. Sometimes it doesn't load at all. Is it because I used Reload.Data in the wrong place? What is the problem?
class denemeView: UIViewController {
var davetiyeKatIsım = [String]()
var model = [[String]]()
var davetiyefilee = [String]()
var davetiyefilee2 = [String]()
override func viewDidLoad() {
super.viewDidLoad()
davetiyeCEK1()
davetiyecek2()
}
#objc func davetiyeCEK1(){
....
if let baslik = try JSONSerialization.jsonObject(with: data, options: []) as? [[String: Any]] {
for review in baslik {
if let soru_baslik = review["davetiyefilee"] as? String { let s = String(describing: soru_baslik)
self.davetiyefilee.append(s)
}
self.model.append(self.davetiyefilee)
self.modelKATE.append(self.davetiyeKatIsım) }
DispatchQueue.main.async { [weak self] in
self?.sonsuzCollec?.reloadData() } }
if let baslik = try JSONSerialization.jsonObject(with: data, options: []) as? [[String: Any]] {
for review in baslik {
if let soru_baslik = review["KATEGO.ISIM"] as? String { let s = String(describing: soru_baslik)
self.davetiyeKatIsım.append(s) } }
DispatchQueue.main.async { [weak self] in
self?.sonsuzCollec?.reloadData() }
}
#objc func davetiyecek2(){...
do {
if let baslik = try JSONSerialization.jsonObject(with: data, options: []) as? [[String: Any]] {
for review in baslik {
if let soru_baslik = review["KATEGO.ISIM"] as? String {
let s = String(describing: soru_baslik)
self.davetiyeKatIsım2.append(s) } }
DispatchQueue.main.async { [weak self] in
self?.sonsuzCollec?.reloadData() }
}
if let baslik = try JSONSerialization.jsonObject(with: data, options: []) as? [[String: Any]] {
for review in baslik {
if let soru_baslik = review["davetiyefilee"] as? String {
let s = String(describing: soru_baslik)
self.davetiyefilee2.append(s) }
self.model.append(self.davetiyefilee2)
self.modelKATE.append(self.davetiyeKatIsım2)
}
DispatchQueue.main.async { [weak self] in
self?.sonsuzCollec?.reloadData() } }
}
catch let parseError {
let responseString = String(data: data, encoding: .utf8)
print("raw response: \(responseString)")
}
}
}
extension denemeView: UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout{
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
func numberOfSections(in collectionView: UICollectionView) -> Int {
if (collectionView == sonsuzCollec) {
return kategoriIsımYeni.count
}
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
if (collectionView == sonsuzCollec) {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cellSonsuz", for: indexPath) as! sonsuzCell
let urlNew = URL(string: model[indexPath.section][indexPath.item])
cell.davetiyeFoto.sd_setImage(with: urlNew)
return cell
}
}